Diff for /loncom/homework/grades.pm between versions 1.62 and 1.787

version 1.62, 2002/11/27 16:39:37 version 1.787, 2021/12/17 20:10:21
Line 25 Line 25
 #  #
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  #
 # 2/9,2/13 Guy Albertelli  
 # 6/8 Gerd Kortemeyer  
 # 7/26 H.K. Ng  
 # 8/20 Gerd Kortemeyer  
 # Year 2002  
 # June-August H.K. Ng  
 #  
   
 package Apache::grades;  package Apache::grades;
 use strict;  use strict;
Line 39  use Apache::style; Line 34  use Apache::style;
 use Apache::lonxml;  use Apache::lonxml;
 use Apache::lonnet;  use Apache::lonnet;
 use Apache::loncommon;  use Apache::loncommon;
   use Apache::lonhtmlcommon;
   use Apache::lonnavmaps;
 use Apache::lonhomework;  use Apache::lonhomework;
   use Apache::lonpickcode;
 use Apache::loncoursedata;  use Apache::loncoursedata;
 use Apache::lonmsg qw(:user_normal_msg);  use Apache::lonmsg();
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common :http);
   use Apache::lonlocal;
   use Apache::lonenc;
   use Apache::lonstathelpers;
   use Apache::lonquickgrades;
   use Apache::bridgetask();
   use Apache::lontexconvert();
   use String::Similarity;
   use HTML::Parser();
   use File::MMagic;
   use LONCAPA;
   
   use POSIX qw(floor);
   
   
   
   my %perm=();
   my %old_essays=();
   
   #  These variables are used to recover from ssi errors
   
   my $ssi_retries = 5;
   my $ssi_error;
   my $ssi_error_resource;
   my $ssi_error_message;
   
 # ----- These first few routines are general use routines.-----  
   sub ssi_with_retries {
       my ($resource, $retries, %form) = @_;
       my ($content, $response) = &Apache::loncommon::ssi_with_retries($resource, $retries, %form);
       if ($response->is_error) {
    $ssi_error          = 1;
    $ssi_error_resource = $resource;
    $ssi_error_message  = $response->code . " " . $response->message;
       }
   
       return $content;
   
   }
   #
   #  Prodcuces an ssi retry failure error message to the user:
 #  #
 # --- Retrieve the parts that matches stores_\d+ from the metadata file.---  
   sub ssi_print_error {
       my ($r) = @_;
       my $helpurl = &Apache::loncommon::top_nav_help('Helpdesk');
       $r->print('
   <br />
   <h2>'.&mt('An unrecoverable network error occurred:').'</h2>
   <p>
   '.&mt('Unable to retrieve a resource from a server:').'<br />
   '.&mt('Resource:').' '.$ssi_error_resource.'<br />
   '.&mt('Error:').' '.$ssi_error_message.'
   </p>
   <p>'.
   &mt('It is recommended that you try again later, as this error may mean the server was just temporarily unavailable, or is down for maintenance.').'<br />'.
   &mt('If the error persists, please contact the [_1] for assistance.',$helpurl).
   '</p>');
       return;
   }
   
   #
   # --- Retrieve the parts from the metadata file.---
   # Returns an array of everything that the resources stores away
   #
   
 sub getpartlist {  sub getpartlist {
     my ($url) = @_;      my ($symb,$errorref) = @_;
     my @parts =();  
     my (@metakeys) = split(/,/,&Apache::lonnet::metadata($url,'keys'));      my $navmap   = Apache::lonnavmaps::navmap->new();
     foreach my $key (@metakeys) {      unless (ref($navmap)) {
  if ( $key =~ m/stores_(\w+)_.*/) {          if (ref($errorref)) { 
     push(@parts,$key);              $$errorref = 'navmap';
  }              return;
     }          }
     return @parts;      }
 }      my $res      = $navmap->getBySymb($symb);
       my $partlist = $res->parts();
 # --- Get the symbolic name of a problem and the url      my $url      = $res->src();
 sub get_symb_and_url {      my $toolsymb;
     my ($request) = @_;      if ($url =~ /ext\.tool$/) {
     (my $url=$ENV{'form.url'}) =~ s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;          $toolsymb = $symb;
     my $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url)));      }
     if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }      my @metakeys = split(/,/,&Apache::lonnet::metadata($url,'keys',$toolsymb));
     return ($symb,$url);  
 }      my @stores;
       foreach my $part (@{ $partlist }) {
 # --- Retrieve the fullname for a user. Return lastname, first middle ---   foreach my $key (@metakeys) {
 # --- Generation is attached next to the lastname if it exists. ---      if ($key =~ m/^stores_\Q$part\E_/) { push(@stores,$key); }
 sub get_fullname {   }
     my ($uname,$udom) = @_;      }
     my %name=&Apache::lonnet::get('environment', ['lastname','generation',      return @stores;
   'firstname','middlename'],  }
                                   $udom,$uname);  
     my $fullname;  #--- Format fullname, username:domain if different for display
     my ($tmp) = keys(%name);  #--- Use anywhere where the student names are listed
     if ($tmp !~ /^(con_lost|error|no_such_host)/i) {  sub nameUserString {
         $fullname = &Apache::loncoursedata::ProcessFullName      my ($type,$fullname,$uname,$udom) = @_;
             (@name{qw/lastname generation firstname middlename/});      if ($type eq 'header') {
    return '<b>&nbsp;'.&mt('Fullname').'&nbsp;</b><span class="LC_internal_info">('.&mt('Username').')</span>';
     } else {      } else {
         &Apache::lonnet::logthis('grades.pm: no name data for '.$uname.   return '&nbsp;'.$fullname.'<span class="LC_internal_info">&nbsp;('.$uname.
                                  '@'.$udom.':'.$tmp);      ($env{'user.domain'} eq $udom ? '' : ' ('.$udom.')').')</span>';
     }      }
     return $fullname;  
 }  }
   
 #--- Get the partlist and the response type for a given problem. ---  #--- Get the partlist and the response type for a given problem. ---
 #--- Indicate if a response type is coded handgraded or not. ---  #--- Count responseIDs, essayresponse items, and dropbox items ---
   #--- Sets response_error pointer to "1" if navmaps object broken ---
 sub response_type {  sub response_type {
     my ($url) = shift;      my ($symb,$response_error) = @_;
     my $allkeys = &Apache::lonnet::metadata($url,'keys');  
     my %seen = ();      my $navmap = Apache::lonnavmaps::navmap->new();
     my (@partlist,%handgrade);      unless (ref($navmap)) {
     foreach (split(/,/,&Apache::lonnet::metadata($url,'packages'))) {          if (ref($response_error)) {
  if (/^\w+response_\w+.*/) {              $$response_error = 1;
     my ($responsetype,$part) = split(/_/,$_,2);          }
     my ($partid,$respid) = split(/_/,$part);          return;
     $handgrade{$part} = $responsetype.':'.($allkeys =~ /parameter_$part\_handgrade/ ? 'yes' : 'no');      }
     next if ($seen{$partid} > 0);      my $res = $navmap->getBySymb($symb);
     $seen{$partid}++;      unless (ref($res)) {
     push @partlist,$partid;          $$response_error = 1;
           return;
       }
       my $partlist = $res->parts();
       my ($numresp,$numessay,$numdropbox) = (0,0,0);
       my %vPart = 
    map { $_ => 1 } (&Apache::loncommon::get_env_multiple('form.vPart'));
       my (%response_types,%handgrade);
       foreach my $part (@{ $partlist }) {
    next if (%vPart && !exists($vPart{$part}));
   
    my @types = $res->responseType($part);
    my @ids = $res->responseIds($part);
    for (my $i=0; $i < scalar(@ids); $i++) {
               $numresp ++;
       $response_types{$part}{$ids[$i]} = $types[$i];
               if ($types[$i] eq 'essay') {
                   $numessay ++;
                   if (&Apache::lonnet::EXT("resource.$part".'_'.$ids[$i].".uploadedfiletypes",$symb)) {
                       $numdropbox ++;
                   }
               }
       $handgrade{$part.'_'.$ids[$i]} = 
    &Apache::lonnet::EXT('resource.'.$part.'_'.$ids[$i].
        '.handgrade',$symb);
    }
       }
       return ($partlist,\%handgrade,\%response_types,$numresp,$numessay,$numdropbox);
   }
   
   sub flatten_responseType {
       my ($responseType) = @_;
       my @part_response_id =
    map { 
       my $part = $_;
       map {
    [$part,$_]
    } sort(keys(%{ $responseType->{$part} }));
    } sort(keys(%$responseType));
       return @part_response_id;
   }
   
   sub get_display_part {
       my ($partID,$symb)=@_;
       my $display=&Apache::lonnet::EXT('resource.'.$partID.'.display',$symb);
       if (defined($display) and $display ne '') {
           $display.= ' (<span class="LC_internal_info">'
                     .&mt('Part ID: [_1]',$partID).'</span>)';
       } else {
    $display=$partID;
       }
       return $display;
   }
   
   #--- Show parts and response type
   sub showResourceInfo {
       my ($symb,$partlist,$responseType,$formname,$checkboxes,$uploads) = @_;
       unless ((ref($partlist) eq 'ARRAY') && (ref($responseType) eq 'HASH')) {
           return '<br clear="all">';
       }
       my $coltitle = &mt('Problem Part Shown');
       if ($checkboxes) {
           $coltitle = &mt('Problem Part');
       } else {
           my $checkedparts = 0;
           foreach my $partid (&Apache::loncommon::get_env_multiple('form.vPart')) {
               if (grep(/^\Q$partid\E$/,@{$partlist})) {
                   $checkedparts ++;
               }
           }
           if ($checkedparts == scalar(@{$partlist})) {
               return '<br clear="all">';
           }
           if ($uploads) {
               $coltitle = &mt('Problem Part Selected');
           }
       }
       my $result = '<div class="LC_left_float" style="display:inline-block;">';
       if ($checkboxes) {
           my $legend = &mt('Parts to display');
           if ($uploads) {
               $legend = &mt('Part(s) with dropbox');
           }
           $result .= '<fieldset style="display:inline-block;"><legend>'.$legend.'</legend>'.
                      '<span class="LC_nobreak">'.
                      '<label><input type="radio" name="chooseparts" value="0" onclick="toggleParts('."'$formname'".');" checked="checked" />'.
                      &mt('All parts').'</label>'.('&nbsp;'x2).
                      '<label><input type="radio" name="chooseparts" value="1" onclick="toggleParts('."'$formname'".');" />'.
                      &mt('Selected parts').'</label></span>'.
                      '<div id="LC_partselector" style="display:none">';
       }
       $result .= &Apache::loncommon::start_data_table()
                 .&Apache::loncommon::start_data_table_header_row();
       if ($checkboxes) {
           $result .= '<th>'.&mt('Display?').'</th>';
       }
       $result .= '<th>'.$coltitle.'</th>'
                 .'<th>'.&mt('Res. ID').'</th>'
                 .'<th>'.&mt('Type').'</th>'
                 .&Apache::loncommon::end_data_table_header_row();
       my %partsseen;
       foreach my $partID (sort(keys(%$responseType))) {
           foreach my $resID (sort(keys(%{ $responseType->{$partID} }))) {
               my $responsetype = $responseType->{$partID}->{$resID};
               if ($uploads) {
                   next unless ($responsetype eq 'essay');
                   next unless (&Apache::lonnet::EXT("resource.$partID".'_'."$resID.uploadedfiletypes",$symb));
               }
               my $display_part=&get_display_part($partID,$symb);
               if (exists($partsseen{$partID})) {
                   $result.=&Apache::loncommon::continue_data_table_row();
               } else {
                   $partsseen{$partID}=scalar(keys(%{$responseType->{$partID}}));
                   $result.=&Apache::loncommon::start_data_table_row().
                            '<td rowspan="'.$partsseen{$partID}.'" style="vertical-align:middle">';
                   if ($checkboxes) {
                       $result.='<input type="checkbox" name="vPart" checked="checked" value="'.$partID.'" /></td>'.
                                '<td rowspan="'.$partsseen{$partID}.'" style="vertical-align:middle">'.$display_part.'</td>';
                   } else {
                       $result.=$display_part.'</td>';
                   }
               }
               $result.='<td>'.'<span class="LC_internal_info">'.$resID.'</span></td>'
                       .'<td>'.&mt($responsetype).'</td>'
                       .&Apache::loncommon::end_data_table_row();
           }
       }
       $result.=&Apache::loncommon::end_data_table();
       if ($checkboxes) {
           $result .= '</div></fieldset>';
       }
       $result .= '</div><div style="padding:0;clear:both;margin:0;border:0"></div>';
       if (!keys(%partsseen)) {
           $result = '';
           if ($uploads) {
               return '<div style="padding:0;clear:both;margin:0;border:0"></div>'.
                      '<p class="LC_info">'.
                       &mt('No dropbox items or essayresponse items with uploadedfiletypes set.').
                      '</p>';
           } else {
               return '<br clear="all" />';
           }
       }
       return $result;
   }
   
   sub part_selector_js {
       my $js = <<"END";
   function toggleParts(formname) {
       if (document.getElementById('LC_partselector')) {
           var index = '';
           if (document.forms.length) {
               for (var i=0; i<document.forms.length; i++) {
                   if (document.forms[i].name == formname) {
                       index = i;
                       break;
                   }
               }
           }
           if ((index != '') && (document.forms[index].elements['chooseparts'].length > 1)) {
               for (var i=0; i<document.forms[index].elements['chooseparts'].length; i++) {
                   if (document.forms[index].elements['chooseparts'][i].checked) {
                      var val = document.forms[index].elements['chooseparts'][i].value;
                       if (document.forms[index].elements['chooseparts'][i].value == 1) {
                           document.getElementById('LC_partselector').style.display = 'block';
                       } else {
                           document.getElementById('LC_partselector').style.display = 'none';
                       }
                   }
               }
           }
       }
   }
   END
       return &Apache::lonhtmlcommon::scripttag($js);
   }
   
   sub reset_caches {
       &reset_analyze_cache();
       &reset_perm();
       &reset_old_essays();
   }
   
   {
       my %analyze_cache;
       my %analyze_cache_formkeys;
   
       sub reset_analyze_cache {
    undef(%analyze_cache);
           undef(%analyze_cache_formkeys);
       }
   
       sub get_analyze {
    my ($symb,$uname,$udom,$no_increment,$add_to_hash,$type,$trial,$rndseed,$bubbles_per_row)=@_;
    my $key = "$symb\0$uname\0$udom";
           if ($type eq 'randomizetry') {
               if ($trial ne '') {
                   $key .= "\0".$trial;
               }
           }
    if (exists($analyze_cache{$key})) {
               my $getupdate = 0;
               if (ref($add_to_hash) eq 'HASH') {
                   foreach my $item (keys(%{$add_to_hash})) {
                       if (ref($analyze_cache_formkeys{$key}) eq 'HASH') {
                           if (!exists($analyze_cache_formkeys{$key}{$item})) {
                               $getupdate = 1;
                               last;
                           }
                       } else {
                           $getupdate = 1;
                       }
                   }
               }
               if (!$getupdate) {
                   return $analyze_cache{$key};
               }
           }
   
    my (undef,undef,$url)=&Apache::lonnet::decode_symb($symb);
    $url=&Apache::lonnet::clutter($url);
           my %form = ('grade_target'      => 'analyze',
                       'grade_domain'      => $udom,
                       'grade_symb'        => $symb,
                       'grade_courseid'    =>  $env{'request.course.id'},
                       'grade_username'    => $uname,
                       'grade_noincrement' => $no_increment);
           if ($bubbles_per_row ne '') {
               $form{'bubbles_per_row'} = $bubbles_per_row;
           }
           if ($type eq 'randomizetry') {
               $form{'grade_questiontype'} = $type;
               if ($rndseed ne '') {
                   $form{'grade_rndseed'} = $rndseed;
               }
           }
           if (ref($add_to_hash)) {
               %form = (%form,%{$add_to_hash});
           }
    my $subresult=&ssi_with_retries($url, $ssi_retries,%form);
    (undef,$subresult)=split(/_HASH_REF__/,$subresult,2);
    my %analyze=&Apache::lonnet::str2hash($subresult);
           if (ref($add_to_hash) eq 'HASH') {
               $analyze_cache_formkeys{$key} = $add_to_hash;
           } else {
               $analyze_cache_formkeys{$key} = {};
           }
    return $analyze_cache{$key} = \%analyze;
       }
   
       sub get_order {
    my ($partid,$respid,$symb,$uname,$udom,$no_increment,$type,$trial,$rndseed)=@_;
    my $analyze = &get_analyze($symb,$uname,$udom,$no_increment,undef,$type,$trial,$rndseed);
    return $analyze->{"$partid.$respid.shown"};
       }
   
       sub get_radiobutton_correct_foil {
    my ($partid,$respid,$symb,$uname,$udom,$type,$trial,$rndseed)=@_;
    my $analyze = &get_analyze($symb,$uname,$udom,undef,undef,$type,$trial,$rndseed);
           my $foils = &get_order($partid,$respid,$symb,$uname,$udom,undef,$type,$trial,$rndseed);
           if (ref($foils) eq 'ARRAY') {
       foreach my $foil (@{$foils}) {
           if ($analyze->{"$partid.$respid.foil.value.$foil"} eq 'true') {
       return $foil;
           }
       }
    }
       }
   
       sub scantron_partids_tograde {
           my ($resource,$cid,$uname,$udom,$check_for_randomlist,$bubbles_per_row,$scancode) = @_;
           my (%analysis,@parts);
           if (ref($resource)) {
               my $symb = $resource->symb();
               my $add_to_form;
               if ($check_for_randomlist) {
                   $add_to_form = { 'check_parts_withrandomlist' => 1,};
               }
               if ($scancode) {
                   if (ref($add_to_form) eq 'HASH') {
                       $add_to_form->{'code_for_randomlist'} = $scancode;
                   } else {
                       $add_to_form = { 'code_for_randomlist' => $scancode,};
                   }
               }
               my $analyze =
                   &get_analyze($symb,$uname,$udom,undef,$add_to_form,
                                undef,undef,undef,$bubbles_per_row);
               if (ref($analyze) eq 'HASH') {
                   %analysis = %{$analyze};
               }
               if (ref($analysis{'parts'}) eq 'ARRAY') {
                   foreach my $part (@{$analysis{'parts'}}) {
                       my ($id,$respid) = split(/\./,$part);
                       if (!&Apache::loncommon::check_if_partid_hidden($id,$symb,$udom,$uname)) {
                           push(@parts,$part);
                       }
                   }
               }
           }
           return (\%analysis,\@parts);
       }
   
   }
   
   #--- Clean response type for display
   #--- Currently filters option/rank/radiobutton/match/essay/Task
   #        response types only.
   sub cleanRecord {
       my ($answer,$response,$symb,$partid,$respid,$record,$order,$version,
    $uname,$udom,$type,$trial,$rndseed) = @_;
       my $grayFont = '<span class="LC_internal_info">';
       if ($response =~ /^(option|rank)$/) {
    my %answer=&Apache::lonnet::str2hash($answer);
           my @answer = %answer;
           %answer = map {&HTML::Entities::encode($_, '"<>&')} @answer;
    my %grading=&Apache::lonnet::str2hash($record->{$version."resource.$partid.$respid.submissiongrading"});
    my ($toprow,$bottomrow);
    foreach my $foil (@$order) {
       if ($grading{$foil} == 1) {
    $toprow.='<td><b>'.$answer{$foil}.'&nbsp;</b></td>';
       } else {
    $toprow.='<td><i>'.$answer{$foil}.'&nbsp;</i></td>';
       }
       $bottomrow.='<td>'.$grayFont.$foil.'</span>&nbsp;</td>';
    }
    return '<blockquote><table border="1">'.
       '<tr valign="top"><td>'.&mt('Answer').'</td>'.$toprow.'</tr>'.
       '<tr valign="top"><td>'.$grayFont.&mt('Option ID').'</span></td>'.
       $bottomrow.'</tr></table></blockquote>';
       } elsif ($response eq 'match') {
    my %answer=&Apache::lonnet::str2hash($answer);
           my @answer = %answer;
           %answer = map {&HTML::Entities::encode($_, '"<>&')} @answer;
    my %grading=&Apache::lonnet::str2hash($record->{$version."resource.$partid.$respid.submissiongrading"});
    my @items=&Apache::lonnet::str2array($record->{$version."resource.$partid.$respid.submissionitems"});
    my ($toprow,$middlerow,$bottomrow);
    foreach my $foil (@$order) {
       my $item=shift(@items);
       if ($grading{$foil} == 1) {
    $toprow.='<td><b>'.$item.'&nbsp;</b></td>';
    $middlerow.='<td><b>'.$grayFont.$answer{$foil}.'&nbsp;</span></b></td>';
       } else {
    $toprow.='<td><i>'.$item.'&nbsp;</i></td>';
    $middlerow.='<td><i>'.$grayFont.$answer{$foil}.'&nbsp;</span></i></td>';
       }
       $bottomrow.='<td>'.$grayFont.$foil.'</span>&nbsp;</td>';
    }
    return '<blockquote><table border="1">'.
       '<tr valign="top"><td>'.&mt('Answer').'</td>'.$toprow.'</tr>'.
       '<tr valign="top"><td>'.$grayFont.&mt('Item ID').'</span></td>'.
       $middlerow.'</tr>'.
       '<tr valign="top"><td>'.$grayFont.&mt('Option ID').'</span></td>'.
       $bottomrow.'</tr></table></blockquote>';
       } elsif ($response eq 'radiobutton') {
    my %answer=&Apache::lonnet::str2hash($answer);
           my @answer = %answer;
           %answer = map {&HTML::Entities::encode($_, '"<>&')}  @answer;
    my ($toprow,$bottomrow);
    my $correct = 
       &get_radiobutton_correct_foil($partid,$respid,$symb,$uname,$udom,$type,$trial,$rndseed);
    foreach my $foil (@$order) {
       if (exists($answer{$foil})) {
    if ($foil eq $correct) {
       $toprow.='<td><b>'.&mt('true').'</b></td>';
    } else {
       $toprow.='<td><i>'.&mt('true').'</i></td>';
    }
       } else {
    $toprow.='<td>'.&mt('false').'</td>';
       }
       $bottomrow.='<td>'.$grayFont.$foil.'</span>&nbsp;</td>';
    }
    return '<blockquote><table border="1">'.
       '<tr valign="top"><td>'.&mt('Answer').'</td>'.$toprow.'</tr>'.
       '<tr valign="top"><td>'.$grayFont.&mt('Option ID').'</span></td>'.
       $bottomrow.'</tr></table></blockquote>';
       } elsif ($response eq 'essay') {
    if (! exists ($env{'form.'.$symb})) {
       my (%keyhash) = &Apache::lonnet::dump('nohist_handgrade',
     $env{'course.'.$env{'request.course.id'}.'.domain'},
     $env{'course.'.$env{'request.course.id'}.'.num'});
   
       my $loginuser = $env{'user.name'}.':'.$env{'user.domain'};
       $env{'form.keywords'} = $keyhash{$symb.'_keywords'} ne '' ? $keyhash{$symb.'_keywords'} : '';
       $env{'form.kwclr'}    = $keyhash{$loginuser.'_kwclr'} ne '' ? $keyhash{$loginuser.'_kwclr'} : 'red';
       $env{'form.kwsize'}   = $keyhash{$loginuser.'_kwsize'} ne '' ? $keyhash{$loginuser.'_kwsize'} : '0';
       $env{'form.kwstyle'}  = $keyhash{$loginuser.'_kwstyle'} ne '' ? $keyhash{$loginuser.'_kwstyle'} : '';
       $env{'form.'.$symb} = 1; # so that we don't have to read it from disk for multiple sub of the same prob.
    }
           $answer = &Apache::lontexconvert::msgtexconverted($answer);
    return '<br /><br /><blockquote><tt>'.&keywords_highlight($answer).'</tt></blockquote>';
       } elsif ( $response eq 'organic') {
           my $result=&mt('Smile representation: [_1]',
                              '"<tt>'.&HTML::Entities::encode($answer, '"<>&').'</tt>"');
    my $jme=$record->{$version."resource.$partid.$respid.molecule"};
    $result.=&Apache::chemresponse::jme_img($jme,$answer,400);
    return $result;
       } elsif ( $response eq 'Task') {
    if ( $answer eq 'SUBMITTED') {
       my $files = $record->{$version."resource.$respid.$partid.bridgetask.portfiles"};
       my $result = &Apache::bridgetask::file_list($files,$uname,$udom);
       return $result;
    } elsif ( grep(/^\Q$version\E.*?\.instance$/, keys(%{$record})) ) {
       my @matches = grep(/^\Q$version\E.*?\.instance$/,
          keys(%{$record}));
       return join('<br />',($version,@matches));
          
          
    } else {
       my $result =
    '<p>'
    .&mt('Overall result: [_1]',
        $record->{$version."resource.$respid.$partid.status"})
    .'</p>';
       
       $result .= '<ul>';
       my @grade = grep(/^\Q${version}resource.$respid.$partid.\E[^.]*[.]status$/,
        keys(%{$record}));
       foreach my $grade (sort(@grade)) {
    my ($dim) = ($grade =~/[.]([^.]+)[.]status$/);
    $result.= '<li>'.&mt("Dimension: [_1], status [_2] ",
        $dim, $record->{$grade}).
     '</li>';
       }
       $result.='</ul>';
       return $result;
    }
       } elsif ( $response =~ m/(?:numerical|formula|custom)/) {
           # Respect multiple input fields, see Bug #5409
    $answer = 
       &Apache::loncommon::format_previous_attempt_value('submission',
         $answer);
    return $answer;
       }
       return &HTML::Entities::encode($answer, '"<>&');
   }
   
   #-- A couple of common js functions
   sub commonJSfunctions {
       my $request = shift;
       $request->print(&Apache::lonhtmlcommon::scripttag(<<COMMONJSFUNCTIONS));
       function radioSelection(radioButton) {
    var selection=null;
    if (radioButton.length > 1) {
       for (var i=0; i<radioButton.length; i++) {
    if (radioButton[i].checked) {
       return radioButton[i].value;
    }
       }
    } else {
       if (radioButton.checked) return radioButton.value;
    }
    return selection;
       }
   
       function pullDownSelection(selectOne) {
    var selection="";
    if (selectOne.length > 1) {
       for (var i=0; i<selectOne.length; i++) {
    if (selectOne[i].selected) {
       return selectOne[i].value;
    }
       }
    } else {
               // only one value it must be the selected one
       return selectOne.value;
  }   }
     }      }
     return \@partlist,\%handgrade;  COMMONJSFUNCTIONS
 }  }
   
 #--- Dumps the class list with usernames,list of sections,  #--- Dumps the class list with usernames,list of sections,
 #--- section, ids and fullnames for each user.  #--- section, ids and fullnames for each user.
 sub getclasslist {  sub getclasslist {
     my ($getsec,$hideexpired) = @_;      my ($getsec,$filterbyaccstatus,$getgroup,$symb,$submitonly,$filterbysubmstatus) = @_;
     my $classlist=&Apache::loncoursedata::get_classlist();      my @getsec;
       my @getgroup;
       my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
       if (!ref($getsec)) {
    if ($getsec ne '' && $getsec ne 'all') {
       @getsec=($getsec);
    }
       } else {
    @getsec=@{$getsec};
       }
       if (grep(/^all$/,@getsec)) { undef(@getsec); }
       if (!ref($getgroup)) {
    if ($getgroup ne '' && $getgroup ne 'all') {
       @getgroup=($getgroup);
    }
       } else {
    @getgroup=@{$getgroup};
       }
       if (grep(/^all$/,@getgroup)) { undef(@getgroup); }
   
       my ($classlist,$keylist)=&Apache::loncoursedata::get_classlist();
     # Bail out if we were unable to get the classlist      # Bail out if we were unable to get the classlist
     return if (! defined($classlist));      return if (! defined($classlist));
       &Apache::loncoursedata::get_group_memberships($classlist,$keylist);
     #      #
     my %sections;      my %sections;
     my %fullnames;      my %fullnames;
     foreach (keys(%$classlist)) {      my ($cdom,$cnum,$partlist);
         # the following undefs are for 'domain', and 'username' respectively.      if (($filterbysubmstatus) && ($submitonly ne 'all') && ($symb ne '')) {
  my (undef,undef,$end,$start,$id,$section,$fullname,$status)=          $cdom = $env{"course.$env{'request.course.id'}.domain"};
             @{$classlist->{$_}};          $cnum = $env{"course.$env{'request.course.id'}.num"};
  # still a student?          my $res_error;
  if (($hideexpired) && ($status ne 'Active')) {          ($partlist) = &response_type($symb,\$res_error);
             delete ($classlist->{$_});      }
             next;      foreach my $student (keys(%$classlist)) {
         }          my $end      = 
  $section = ($section ne '' ? $section : 'no');              $classlist->{$student}->[&Apache::loncoursedata::CL_END()];
  if ($getsec eq 'all' || $getsec eq $section) {          my $start    = 
             $sections{$section}++;              $classlist->{$student}->[&Apache::loncoursedata::CL_START()];
             $fullnames{$_}=$fullname;          my $id       = 
         } else {              $classlist->{$student}->[&Apache::loncoursedata::CL_ID()];
             delete($classlist->{$_});          my $section  = 
               $classlist->{$student}->[&Apache::loncoursedata::CL_SECTION()];
           my $fullname = 
               $classlist->{$student}->[&Apache::loncoursedata::CL_FULLNAME()];
           my $status   = 
               $classlist->{$student}->[&Apache::loncoursedata::CL_STATUS()];
           my $group   = 
               $classlist->{$student}->[&Apache::loncoursedata::CL_GROUP()];
    # filter students according to status selected
    if ($filterbyaccstatus && (!($stu_status =~ /Any/))) {
       if (!($stu_status =~ $status)) {
    delete($classlist->{$student});
    next;
       }
    }
    # filter students according to groups selected
    my @stu_groups = split(/,/,$group);
    if (@getgroup) {
       my $exclude = 1;
       foreach my $grp (@getgroup) {
           foreach my $stu_group (@stu_groups) {
               if ($stu_group eq $grp) {
                   $exclude = 0;
                  } 
           }
              if (($grp eq 'none') && !$group) {
              $exclude = 0;
           }
       }
       if ($exclude) {
           delete($classlist->{$student});
    next;
       }
    }
           if (($filterbysubmstatus) && ($submitonly ne 'all') && ($symb ne '')) {
               my $udom =
                   $classlist->{$student}->[&Apache::loncoursedata::CL_SDOM()];
               my $uname =
                   $classlist->{$student}->[&Apache::loncoursedata::CL_SNAME()];
               if (($symb ne '') && ($udom ne '') && ($uname ne '')) {
                   if ($submitonly eq 'queued') {
                       my %queue_status =
                           &Apache::bridgetask::get_student_status($symb,$cdom,$cnum,
                                                                   $udom,$uname);
                       if (!defined($queue_status{'gradingqueue'})) {
                           delete($classlist->{$student});
                           next;
                       }
                   } else {
                       my (%status) =&student_gradeStatus($symb,$udom,$uname,$partlist);
                       my $submitted = 0;
                       my $graded = 0;
                       my $incorrect = 0;
                       foreach (keys(%status)) {
                           $submitted = 1 if ($status{$_} ne 'nothing');
                           $graded = 1 if ($status{$_} =~ /^ungraded/);
                           $incorrect = 1 if ($status{$_} =~ /^incorrect/);
   
                           my ($foo,$partid,$foo1) = split(/\./,$_);
                           if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
                               $submitted = 0;
                           }
                       }
                       if (!$submitted && ($submitonly eq 'yes' ||
                                           $submitonly eq 'incorrect' ||
                                           $submitonly eq 'graded')) {
                           delete($classlist->{$student});
                           next;
                       } elsif (!$graded && ($submitonly eq 'graded')) {
                           delete($classlist->{$student});
                           next;
                       } elsif (!$incorrect && $submitonly eq 'incorrect') {
                           delete($classlist->{$student});
                           next;
                       }
                   }
               }
         }          }
    $section = ($section ne '' ? $section : 'none');
    if (&canview($section)) {
       if (!@getsec || grep(/^\Q$section\E$/,@getsec)) {
    $sections{$section}++;
    if ($classlist->{$student}) {
       $fullnames{$student}=$fullname;
    }
       } else {
    delete($classlist->{$student});
       }
    } else {
       delete($classlist->{$student});
    }
     }      }
     my %seen = ();  
     my @sections = sort(keys(%sections));      my @sections = sort(keys(%sections));
     return ($classlist,\@sections,\%fullnames);      return ($classlist,\@sections,\%fullnames);
 }  }
   
 #find user domain  sub canmodify {
 sub finduser {      my ($sec)=@_;
     my ($name) = @_;      if ($perm{'mgr'}) {
     my $domain = '';   if (!defined($perm{'mgr_section'})) {
     if ( $Apache::grades::viewgrades eq 'F' ) {      # can modify whole class
  my %classlist=&Apache::lonnet::dump('classlist',      return 1;
     $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},   } else {
     $ENV{'course.'.$ENV{'request.course.id'}.'.num'});      if ($sec eq $perm{'mgr_section'}) {
  my (@fields) = grep /^$name:/, keys %classlist;   #can modify the requested section
  ($name, $domain) = split(/:/,$fields[0]);   return 1;
  return ($name,$domain);      } else {
     } else {   # can't modify the requested section
  return ($ENV{'user.name'},$ENV{'user.domain'});   return 0;
       }
    }
     }      }
       #can't modify
       return 0;
 }  }
   
 #--- Prompts a user to enter a username.  sub canview {
 sub moreinfo {      my ($sec)=@_;
     my ($request,$reason) = @_;      if ($perm{'vgr'}) {
     $request->print("Unable to process request: $reason");   if (!defined($perm{'vgr_section'})) {
     if ( $Apache::grades::viewgrades eq 'F' ) {      # can view whole class
  $request->print('<form action="/adm/grades" method="post">'."\n");      return 1;
  if ($ENV{'form.url'}) {   } else {
     $request->print('<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />'."\n");      if ($sec eq $perm{'vgr_section'}) {
  }   #can view the requested section
  if ($ENV{'form.symb'}) {   return 1;
     $request->print('<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />'."\n");      } else {
  }   # can't view the requested section
  $request->print('<input type="hidden" name="command" value="'.$ENV{'form.command'}.'" />'."\n");   return 0;
  $request->print("Student:".'<input type="text" name="student" value="'.$ENV{'form.student'}.'" />'."<br />\n");      }
  $request->print("Domain:".'<input type="text" name="domain" value="'.$ENV{'user.domain'}.'" />'."<br />\n");   }
  $request->print('<input type="submit" name="submit" value="ReSubmit" />'."<br />\n");  
  $request->print('</form>');  
     }      }
     return '';      #can't view
       return 0;
 }  }
   
 #--- Retrieve the grade status of a student for all the parts  #--- Retrieve the grade status of a student for all the parts
 sub student_gradeStatus {  sub student_gradeStatus {
     my ($url,$symb,$udom,$uname,$partlist) = @_;      my ($symb,$udom,$uname,$partlist) = @_;
     my %record     = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);      my %record     = &Apache::lonnet::restore($symb,$env{'request.course.id'},$udom,$uname);
     my %partstatus = ();      my %partstatus = ();
     foreach (@$partlist) {      foreach (@$partlist) {
  my ($status,$foo)    = split(/_/,$record{"resource.$_.solved"},2);   my ($status,undef)   = split(/_/,$record{"resource.$_.solved"},2);
  $status              = 'nothing' if ($status eq '');   $status              = 'nothing' if ($status eq '');
  $partstatus{$_}      = $status;   $partstatus{$_}      = $status;
  my $subkey           = "resource.$_.submitted_by";   my $subkey           = "resource.$_.submitted_by";
Line 195  sub student_gradeStatus { Line 833  sub student_gradeStatus {
 # Use by verifyscript and viewgrades  # Use by verifyscript and viewgrades
 # Shows a student's view of problem and submission  # Shows a student's view of problem and submission
 sub jscriptNform {  sub jscriptNform {
     my ($url,$symb) = @_;      my ($symb) = @_;
     my $jscript='<script type="text/javascript" language="javascript">'."\n".      my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
       my $jscript= &Apache::lonhtmlcommon::scripttag(
  '    function viewOneStudent(user,domain) {'."\n".   '    function viewOneStudent(user,domain) {'."\n".
  ' document.onestudent.student.value = user;'."\n".   ' document.onestudent.student.value = user;'."\n".
  ' document.onestudent.userdom.value = domain;'."\n".   ' document.onestudent.userdom.value = domain;'."\n".
  ' document.onestudent.submit();'."\n".   ' document.onestudent.submit();'."\n".
  '    }'."\n".   '    }'."\n".
  '</script>'."\n";   "\n");
     $jscript.= '<form action="/adm/grades" method="post" name="onestudent">'."\n".      $jscript.= '<form action="/adm/grades" method="post" name="onestudent">'."\n".
  '<input type="hidden" name="symb"    value="'.$symb.'" />'."\n".   '<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
  '<input type="hidden" name="url"     value="'.$url.'" />'."\n".   '<input type="hidden" name="Status"  value="'.$stu_status.'" />'."\n".
  '<input type="hidden" name="command" value="submission" />'."\n".   '<input type="hidden" name="command" value="submission" />'."\n".
  '<input type="hidden" name="student" value="" />'."\n".   '<input type="hidden" name="student" value="" />'."\n".
  '<input type="hidden" name="userdom" value="" />'."\n".   '<input type="hidden" name="userdom" value="" />'."\n".
Line 213  sub jscriptNform { Line 852  sub jscriptNform {
     return $jscript;      return $jscript;
 }  }
   
   
   
   # Given the score (as a number [0-1] and the weight) what is the final
   # point value? This function will round to the nearest tenth, third,
   # or quarter if one of those is within the tolerance of .00001.
   sub compute_points {
       my ($score, $weight) = @_;
       
       my $tolerance = .00001;
       my $points = $score * $weight;
   
       # Check for nearness to 1/x.
       my $check_for_nearness = sub {
           my ($factor) = @_;
           my $num = ($points * $factor) + $tolerance;
           my $floored_num = floor($num);
           if ($num - $floored_num < 2 * $tolerance * $factor) {
               return $floored_num / $factor;
           }
           return $points;
       };
   
       $points = $check_for_nearness->(10);
       $points = $check_for_nearness->(3);
       $points = $check_for_nearness->(4);
       
       return $points;
   }
   
 #------------------ End of general use routines --------------------  #------------------ End of general use routines --------------------
   
   #
   # Find most similar essay
   #
   
   sub most_similar {
       my ($uname,$udom,$symb,$uessay)=@_;
   
       unless ($symb) { return ''; }
   
       unless (ref($old_essays{$symb}) eq 'HASH') { return ''; }
   
   # ignore spaces and punctuation
   
       $uessay=~s/\W+/ /gs;
   
   # ignore empty submissions (occuring when only files are sent)
   
       unless ($uessay=~/\w+/s) { return ''; }
   
   # these will be returned. Do not care if not at least 50 percent similar
       my $limit=0.6;
       my $sname='';
       my $sdom='';
       my $scrsid='';
       my $sessay='';
   # go through all essays ...
       foreach my $tkey (keys(%{$old_essays{$symb}})) {
    my ($tname,$tdom,$tcrsid)=map {&unescape($_)} (split(/\./,$tkey));
   # ... except the same student
           next if (($tname eq $uname) && ($tdom eq $udom));
    my $tessay=$old_essays{$symb}{$tkey};
    $tessay=~s/\W+/ /gs;
   # String similarity gives up if not even limit
    my $tsimilar=&String::Similarity::similarity($uessay,$tessay,$limit);
   # Found one
    if ($tsimilar>$limit) {
       $limit=$tsimilar;
       $sname=$tname;
       $sdom=$tdom;
       $scrsid=$tcrsid;
       $sessay=$old_essays{$symb}{$tkey};
    }
       }
       if ($limit>0.6) {
          return ($sname,$sdom,$scrsid,$sessay,$limit);
       } else {
          return ('','','','',0);
       }
   }
   
 #-------------------------------------------------------------------  #-------------------------------------------------------------------
   
 #------------------------------------ Receipt Verification Routines  #------------------------------------ Receipt Verification Routines
 #  #
   
   sub initialverifyreceipt {
      my ($request,$symb) = @_;
      &commonJSfunctions($request);
      return '<form name="gradingMenu" action=""><input type="submit" value="'.&mt('Verify Receipt Number.').'" />'.
           &Apache::lonnet::recprefix($env{'request.course.id'}).
           '-<input type="text" name="receipt" size="4" />'.
           '<input type="hidden" name="symb" value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
           '<input type="hidden" name="command" value="verify" />'.
           "</form>\n";
   }
   
 #--- Check whether a receipt number is valid.---  #--- Check whether a receipt number is valid.---
 sub verifyreceipt {  sub verifyreceipt {
     my $request  = shift;      my ($request,$symb) = @_;
   
     my $courseid = $ENV{'request.course.id'};      my $courseid = $env{'request.course.id'};
     my $receipt  = unpack("%32C*",$Apache::lonnet::perlvar{'lonHostID'}).'-'.      my $receipt  = &Apache::lonnet::recprefix($courseid).'-'.
  $ENV{'form.receipt'};   $env{'form.receipt'};
     $receipt     =~ s/[^\-\d]//g;      $receipt     =~ s/[^\-\d]//g;
     my $url      = $ENV{'form.url'};  
     my $symb     = $ENV{'form.symb'};  
     unless ($symb) {  
  $symb    = &Apache::lonnet::symbread($url);  
     }  
   
     my $title.='<h3><font color="#339933">Verifying Submission Receipt '.      my $title =
  $receipt.'</h3></font>'."\n".   '<h3><span class="LC_info">'.
  '<font size=+1><b>Resource: </b>'.$ENV{'form.url'}.'</font><br><br>'."\n";   &mt('Verifying Receipt Number [_1]',$receipt).
    '</span></h3>'."\n";
   
     my ($string,$contents,$matches) = ('','',0);      my ($string,$contents,$matches) = ('','',0);
     my (undef,undef,$fullname) = &getclasslist('all','0');      my (undef,undef,$fullname) = &getclasslist('all','0');
       
     foreach (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {      my $receiptparts=0;
       if ($env{"course.$courseid.receiptalg"} eq 'receipt2' ||
    $env{"course.$courseid.receiptalg"} eq 'receipt3') { $receiptparts=1; }
       my $parts=['0'];
       if ($receiptparts) {
           my $res_error; 
           ($parts)=&response_type($symb,\$res_error);
           if ($res_error) {
               return &navmap_errormsg();
           } 
       }
       
       my $header = 
    &Apache::loncommon::start_data_table().
    &Apache::loncommon::start_data_table_header_row().
    '<th>&nbsp;'.&mt('Fullname').'&nbsp;</th>'."\n".
    '<th>&nbsp;'.&mt('Username').'&nbsp;</th>'."\n".
    '<th>&nbsp;'.&mt('Domain').'&nbsp;</th>';
       if ($receiptparts) {
    $header.='<th>&nbsp;'.&mt('Problem Part').'&nbsp;</th>';
       }
       $header.=
    &Apache::loncommon::end_data_table_header_row();
   
       foreach (sort 
        {
    if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
        return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
    }
    return $a cmp $b;
        } (keys(%$fullname))) {
  my ($uname,$udom)=split(/\:/);   my ($uname,$udom)=split(/\:/);
  if ($receipt eq    foreach my $part (@$parts) {
     &Apache::lonnet::ireceipt($uname,$udom,$courseid,$symb)) {      if ($receipt eq &Apache::lonnet::ireceipt($uname,$udom,$courseid,$symb,$part)) {
     $contents.='<tr bgcolor="#ffffe6"><td>&nbsp;'."\n".   $contents.=
  '<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.      &Apache::loncommon::start_data_table_row().
  '\')"; TARGET=_self>'.$$fullname{$_}.'</a>&nbsp;</td>'."\n".      '<td>&nbsp;'."\n".
  '<td>&nbsp;'.$uname.'&nbsp;</td>'.      '<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
  '<td>&nbsp;'.$udom.'&nbsp;</td></tr>'."\n";      '\');" target="_self">'.$$fullname{$_}.'</a>&nbsp;</td>'."\n".
           '<td>&nbsp;'.$uname.'&nbsp;</td>'.
     $matches++;      '<td>&nbsp;'.$udom.'&nbsp;</td>';
    if ($receiptparts) {
       $contents.='<td>&nbsp;'.$part.'&nbsp;</td>';
    }
    $contents.= 
       &Apache::loncommon::end_data_table_row()."\n";
   
    $matches++;
       }
  }   }
     }      }
     if ($matches == 0) {      if ($matches == 0) {
  $string = $title.'No match found for the above receipt.';          $string = $title
                    .'<p class="LC_warning">'
                    .&mt('No match found for the above receipt number.')
                    .'</p>';
     } else {      } else {
  $string = &jscriptNform($url,$symb).$title.   $string = &jscriptNform($symb).$title.
     'The above receipt matches the following student'.      '<p>'.
     ($matches <= 1 ? '.' : 's.')."\n".      &mt('The above receipt number matches the following [quant,_1,student].',$matches).
     '<table border="0"><tr><td bgcolor="#777777">'."\n".      '</p>'.
     '<table border="0"><tr bgcolor="#e6ffff">'."\n".      $header.
     '<td><b>&nbsp;Fullname&nbsp;</b></td>'."\n".  
     '<td><b>&nbsp;Username&nbsp;</b></td>'."\n".  
     '<td><b>&nbsp;Domain&nbsp;</b></td></tr>'."\n".  
     $contents.      $contents.
     '</table></td></tr></table>'."\n";      &Apache::loncommon::end_data_table()."\n";
     }      }
     return $string.&show_grading_menu_form($symb,$url);      return $string;
 }  }
   
 #--- This is called by a number of programs.  #--- This is called by a number of programs.
Line 274  sub verifyreceipt { Line 1039  sub verifyreceipt {
 #--- Also called directly when one clicks on the subm button   #--- Also called directly when one clicks on the subm button 
 #    on the problem page.  #    on the problem page.
 sub listStudents {  sub listStudents {
     my ($request) = shift;      my ($request,$symb,$submitonly,$divforres) = @_;
   
     my ($symb,$url) = &get_symb_and_url();      my $is_tool   = ($symb =~ /ext\.tool$/);
     my $cdom      = $ENV{"course.$ENV{'request.course.id'}.domain"};      my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
     my $cnum      = $ENV{"course.$ENV{'request.course.id'}.num"};      my $cnum      = $env{"course.$env{'request.course.id'}.num"};
     my $getsec    = $ENV{'form.section'} eq '' ? 'all' : $ENV{'form.section'};      my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
     my $submitonly= $ENV{'form.submitonly'} eq '' ? 'all' : $ENV{'form.submitonly'};      my $getgroup  = $env{'form.group'} eq '' ? 'all' : $env{'form.group'};
       unless ($submitonly) {
           $submitonly = $env{'form.submitonly'} eq '' ? 'all' : $env{'form.submitonly'};
       }
   
       my $result='';
       my $res_error;
       my ($partlist,$handgrade,$responseType,$numresp,$numessay) = &response_type($symb,\$res_error);
   
       my $table;
       if (ref($partlist) eq 'ARRAY') {
           if (scalar(@$partlist) > 1 ) {
               $table = &showResourceInfo($symb,$partlist,$responseType,'gradesub',1);
           } elsif ($divforres) {
               $table = '<div style="padding:0;clear:both;margin:0;border:0"></div>';
           } else {
               $table = '<br clear="all" />';
           }
       }
   
     my $result;      my %js_lt = &Apache::lonlocal::texthash (
     my ($partlist,$handgrade) = &response_type($url);   'multiple' => 'Please select a student or group of students before clicking on the Next button.',
     for (sort keys(%$handgrade)) {   'single'   => 'Please select the student before clicking on the Next button.',
  my ($responsetype,$handgrade)=split(/:/,$$handgrade{$_});       );
  $ENV{'form.handgrade'} = 'yes' if ($handgrade eq 'yes');      &js_escape(\%js_lt);
  $result.='<tr><td><b>Part </b>'.(split(/_/))[0].'</td>'.      $request->print(&Apache::lonhtmlcommon::scripttag(<<LISTJAVASCRIPT));
     '<td><b>Type: </b>'.$responsetype.'</td>'.      function checkSelect(checkBox) {
     '<td><b>Handgrade: </b>'.$handgrade.'</font></td></tr>';   var ctr=0;
     }   var sense="";
     $result.='</table>';   if (checkBox.length > 1) {
       for (var i=0; i<checkBox.length; i++) {
     my $viewgrade;   if (checkBox[i].checked) {
     if ($ENV{'form.handgrade'} eq 'yes') {      ctr++;
  $viewgrade = 'View/Grade';   }
     } else {      }
  $viewgrade = 'View';      sense = '$js_lt{'multiple'}';
     }   } else {
       if (checkBox.checked) {
     $result='<h3><font color="#339933">&nbsp;'.   ctr = 1;
  $viewgrade.      }
     ' Submissions for a Student or a Group of Students</font></h3>'.      sense = '$js_lt{'single'}';
  '<table border="0"><tr><td colspan=3><font size=+1>'.   }
     '<b>Resource: </b>'.$url.'</font></td></tr>'.$result;   if (ctr == 0) {
       alert(sense);
     $request->print(<<LISTJAVASCRIPT);      return false;
 <script type="text/javascript" language="javascript">   }
   function checkSelect(checkBox) {   document.gradesub.submit();
     var ctr=0;  
     var sense="";  
     if (checkBox.length > 1) {  
        for (var i=0; i<checkBox.length; i++) {  
   if (checkBox[i].checked) {  
      ctr++;  
   }  
        }  
        sense = "a student or group of students";  
     } else {  
        if (checkBox.checked) {  
    ctr = 1;  
        }  
        sense = "the student";  
     }      }
     if (ctr == 0) {  
        alert("Please select "+sense+" before clicking on the $viewgrade button.");      function reLoadList(formname) {
        return false;   if (formname.saveStatusOld.value == pullDownSelection(formname.Status)) {return;}
    formname.command.value = 'submission';
    formname.submit();
     }      }
     document.gradesub.submit();  
   }  
 </script>  
 LISTJAVASCRIPT  LISTJAVASCRIPT
   
       &commonJSfunctions($request);
     $request->print($result);      $request->print($result);
   
     my $checkhdgrade = $ENV{'form.handgrade'} eq 'yes' ? 'checked' : '';      my $gradeTable='<form action="/adm/grades" method="post" name="gradesub">'.
     my $checklastsub = $ENV{'form.handgrade'} eq 'yes' ? '' : 'checked';   "\n".$table;
   
     my $gradeTable='<form action="/adm/grades" method="post" name="gradesub">'."\n".      $gradeTable .= &Apache::lonhtmlcommon::start_pick_box();
  '&nbsp;<b>View Problem: </b><input type="radio" name="vProb" value="no" /> no '."\n".      unless ($is_tool) {
  '<input type="radio" name="vProb" value="yes" checked /> one student '."\n".          $gradeTable .= &Apache::lonhtmlcommon::row_title(&mt('View Problem Text'))
  '<input type="radio" name="vProb" value="all" /> all students <br />'."\n".                        .'<label><input type="radio" name="vProb" value="no" checked="checked" /> '.&mt('no').' </label>'."\n"
  '&nbsp;<b>Submissions: </b>'."\n";                        .'<label><input type="radio" name="vProb" value="yes" /> '.&mt('one student').' </label>'."\n"
     if ($ENV{'form.handgrade'} eq 'yes') {                        .'<label><input type="radio" name="vProb" value="all" /> '.&mt('all students').' </label><br />'."\n"
  $gradeTable.='<input type="radio" name="lastSub" value="hdgrade" '.$checkhdgrade.' /> handgrade only'."\n";                        .&Apache::lonhtmlcommon::row_closure();
     }          $gradeTable .= &Apache::lonhtmlcommon::row_title(&mt('View Answer'))
     $gradeTable.='<input type="radio" name="lastSub" value="lastonly" '.$checklastsub.' /> last sub only'."\n".                        .'<label><input type="radio" name="vAns" value="no"  /> '.&mt('no').' </label>'."\n"
  '<input type="radio" name="lastSub" value="last" /> last sub & parts info'."\n".                        .'<label><input type="radio" name="vAns" value="yes" /> '.&mt('one student').' </label>'."\n"
  '<input type="radio" name="lastSub" value="all" /> all details'."\n".                        .'<label><input type="radio" name="vAns" value="all" checked="checked" /> '.&mt('all students').' </label><br />'."\n"
  '<input type="hidden" name="section"     value="'.$getsec.'" />'."\n".                        .&Apache::lonhtmlcommon::row_closure();
       }
   
       my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
       my $saveStatus = $stu_status eq '' ? 'Active' : $stu_status;
       $env{'form.Status'} = $saveStatus;
       my %optiontext;
       if ($is_tool) {
           %optiontext = &Apache::lonlocal::texthash (
                             lastonly => 'last transaction',
                             last     => 'last transaction with details',
                             datesub  => 'all transactions',
                             all      => 'all transactions with details',
                         );
       } else {
           %optiontext = &Apache::lonlocal::texthash (
                             lastonly => 'last submission',
                             last     => 'last submission with details',
                             datesub  => 'all submissions',
                             all      => 'all submissions with details',
                         );
       }
       my $submission_options =
           '<span class="LC_nobreak">'.
           '<label><input type="radio" name="lastSub" value="lastonly" /> '.
           $optiontext{'lastonly'}.' </label></span>'."\n".
           '<span class="LC_nobreak">'.
           '<label><input type="radio" name="lastSub" value="last" /> '.
           $optiontext{'last'}.' </label></span>'."\n".
           '<span class="LC_nobreak">'.
           '<label><input type="radio" name="lastSub" value="datesub" checked="checked" /> '.
           $optiontext{'datesub'}.'</label></span>'."\n".
           '<span class="LC_nobreak">'.
           '<label><input type="radio" name="lastSub" value="all" /> '.
           $optiontext{'all'}.'</label></span>';
       my $viewtitle;
       if ($is_tool) {
           $viewtitle = &mt('View Transactions');
       } else {
           $viewtitle = &mt('View Submissions');
       }
       my ($compmsg,$nocompmsg);
       $nocompmsg = ' checked="checked"';
       if ($numessay) {
           $compmsg = $nocompmsg;
           $nocompmsg = '';
       }
       $gradeTable .= &Apache::lonhtmlcommon::row_title($viewtitle)
                     .$submission_options;
   # Check if any gradable
       my $showmore;
       if ($perm{'mgr'}) {
           my @sections;
           if ($env{'request.course.sec'} ne '') {
               @sections = ($env{'request.course.sec'});
           } elsif ($env{'form.section'} eq '') {
               @sections = ('all');
           } else {
               @sections = &Apache::loncommon::get_env_multiple('form.section');
           }
           if (grep(/^all$/,@sections)) {
               $showmore = 1;
           } else {
               foreach my $sec (@sections) {
                   if (&canmodify($sec)) {
                       $showmore = 1;
                       last;
                   }
               }
           }
       }
   
       if ($showmore) {
           $gradeTable .=
                      &Apache::lonhtmlcommon::row_closure()
                     .&Apache::lonhtmlcommon::row_title(&mt('Send Messages'))
                     .'<span class="LC_nobreak">'
                     .'<label><input type="radio" name="compmsg" value="0"'.$nocompmsg.' />'
                     .&mt('No').('&nbsp;'x2).'</label>'
                     .'<label><input type="radio" name="compmsg" value="1"'.$compmsg.' />'
                     .&mt('Yes').('&nbsp;'x2).'</label>'
                     .&Apache::lonhtmlcommon::row_closure();
   
           $gradeTable .= 
                      &Apache::lonhtmlcommon::row_title(&mt('Grading Increments'))
                     .'<select name="increment">'
                     .'<option value="1">'.&mt('Whole Points').'</option>'
                     .'<option value=".5">'.&mt('Half Points').'</option>'
                     .'<option value=".25">'.&mt('Quarter Points').'</option>'
                     .'<option value=".1">'.&mt('Tenths of a Point').'</option>'
                     .'</select>';
       }
       $gradeTable .= 
           &build_section_inputs().
  '<input type="hidden" name="submitonly"  value="'.$submitonly.'" />'."\n".   '<input type="hidden" name="submitonly"  value="'.$submitonly.'" />'."\n".
  '<input type="hidden" name="response"    value="'.$ENV{'form.response'}.'" />'."\n".   '<input type="hidden" name="symb" value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
  '<input type="hidden" name="handgrade": #falue="'.$ENV{'form.handgrade'}.'" /><br />'."\n".   '<input type="hidden" name="saveStatusOld" value="'.$saveStatus.'" />'."\n";
  '<input type="hidden" name="showgrading" value="'.$ENV{'form.showgrading'}.'" /><br />'."\n".      if (exists($env{'form.Status'})) {
  '<input type="hidden" name="url"  value="'.$url.'" />'."\n".   $gradeTable .= '<input type="hidden" name="Status" value="'.$env{'form.Status'}.'" />'."\n";
  '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".      } else {
  'To '.lc($viewgrade).' a submission, click on the check box next to the student\'s name. Then '."\n".          $gradeTable .= &Apache::lonhtmlcommon::row_closure()
  'click on the '.$viewgrade.' button. To view the submissions for a group of students, click'."\n".                        .&Apache::lonhtmlcommon::row_title(&mt('Student Status'))
  ' on the check boxes for the group of students.<br />'."\n".                        .&Apache::lonhtmlcommon::StatusOptions(
  '<input type="hidden" name="command" value="processGroup" />'."\n".                             $saveStatus,undef,1,'javascript:reLoadList(this.form);');
  '<input type="button" '."\n".      }
  'onClick="javascript:checkSelect(this.form.stuinfo);" '."\n".      if ($numessay) {
  'value="'.$viewgrade.'" />'."\n";          $gradeTable .= &Apache::lonhtmlcommon::row_closure()
                          .&Apache::lonhtmlcommon::row_title(&mt('Check For Plagiarism'))
     my (undef,undef,$fullname) = &getclasslist($getsec,'0');                        .'<input type="checkbox" name="checkPlag" checked="checked" />';
           }
     $gradeTable.='<table border="0"><tr><td bgcolor="#777777">'.      $gradeTable .= &Apache::lonhtmlcommon::row_closure(1)
  '<table border="0"><tr bgcolor="#e6ffff">'.                    .&Apache::lonhtmlcommon::end_pick_box();
  '<td><b>&nbsp;Select&nbsp;</b></td><td><b>&nbsp;Fullname&nbsp;</b></td>'.      my $regrademsg;
  '<td><b>&nbsp;Username&nbsp;</b></td><td><b>&nbsp;Domain&nbsp;</b></td>';      if ($is_tool) {
     foreach (sort(@$partlist)) {          $regrademsg =&mt("To view/grade/regrade, click on the check box(es) next to the student's name(s). Then click on the Next button.");
  $gradeTable.='<td><b>&nbsp;Part '.(split(/_/))[0].' Status&nbsp;</b></td>';      } else {
           $regrademsg = &mt("To view/grade/regrade a submission or a group of submissions, click on the check box(es) next to the student's name(s). Then click on the Next button.");
       }
       $gradeTable .= '<p>'
                     .$regrademsg."\n"
                     .'<input type="hidden" name="command" value="processGroup" />'
                     .'</p>';
   
   # checkall buttons
       $gradeTable.=&check_script('gradesub', 'stuinfo');
       $gradeTable.='<input type="button" '."\n".
           'onclick="javascript:checkSelect(this.form.stuinfo);" '."\n".
           'value="'.&mt('Next').' &rarr;" /> <br />'."\n";
       $gradeTable.=&check_buttons();
       my ($classlist, undef, $fullname) = &getclasslist($getsec,'1',$getgroup);
       $gradeTable.= &Apache::loncommon::start_data_table().
    &Apache::loncommon::start_data_table_header_row();
       my $loop = 0;
       while ($loop < 2) {
    $gradeTable.='<th>'.&mt('No.').'</th><th>'.&mt('Select').'</th>'.
       '<th>'.&nameUserString('header').'&nbsp;'.&mt('Section/Group').'</th>';
    if (($submitonly ne 'queued') && ($submitonly ne 'all')) {
       foreach my $part (sort(@$partlist)) {
    my $display_part=
       &get_display_part((split(/_/,$part))[0],$symb);
    $gradeTable.=
       '<th>'.&mt('Part: [_1] Status',$display_part).'</th>';
       }
    } elsif ($submitonly eq 'queued') {
       $gradeTable.='<th>'.&mt('Queue Status').'&nbsp;</th>';
    }
    $loop++;
   # $gradeTable.='<td></td>' if ($loop%2 ==1);
     }      }
     $gradeTable.='</tr>'."\n";      $gradeTable.=&Apache::loncommon::end_data_table_header_row()."\n";
   
     my $ctr = 0;      my $ctr = 0;
     foreach my $student (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {      foreach my $student (sort 
    {
        if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
    return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
        }
        return $a cmp $b;
    }
    (keys(%$fullname))) {
  my ($uname,$udom) = split(/:/,$student);   my ($uname,$udom) = split(/:/,$student);
  my (%status) =&student_gradeStatus($url,$symb,$udom,$uname,$partlist);  
  my $statusflg = '';   my %status = ();
  foreach (keys(%status)) {  
     $statusflg = 1 if ($status{$_} ne 'nothing');   if ($submitonly eq 'queued') {
     my ($foo,$partid,$foo1) = split(/\./,$_);      my %queue_status = 
     if ($status{'resource.'.$partid.'.submitted_by'} ne '') {   &Apache::bridgetask::get_student_status($symb,$cdom,$cnum,
  $statusflg = '';   $udom,$uname);
  $gradeTable.='<input type="hidden" name="'.      next if (!defined($queue_status{'gradingqueue'}));
     $student.':submitted_by" value="'.      $status{'gradingqueue'} = $queue_status{'gradingqueue'};
     $status{'resource.'.$partid.'.submitted_by'}.'" />';   }
   
    if (($submitonly ne 'queued') && ($submitonly ne 'all')) {
       (%status) =&student_gradeStatus($symb,$udom,$uname,$partlist);
       my $submitted = 0;
       my $graded = 0;
       my $incorrect = 0;
       foreach (keys(%status)) {
    $submitted = 1 if ($status{$_} ne 'nothing');
    $graded = 1 if ($status{$_} =~ /^ungraded/);
    $incorrect = 1 if ($status{$_} =~ /^incorrect/);
   
    my ($foo,$partid,$foo1) = split(/\./,$_);
    if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
       $submitted = 0;
       my ($part)=split(/\./,$partid);
       $gradeTable.='<input type="hidden" name="'.
    $student.':'.$part.':submitted_by" value="'.
    $status{'resource.'.$partid.'.submitted_by'}.'" />';
    }
     }      }
       
       next if (!$submitted && ($submitonly eq 'yes' ||
        $submitonly eq 'incorrect' ||
        $submitonly eq 'graded'));
       next if (!$graded && ($submitonly eq 'graded'));
       next if (!$incorrect && $submitonly eq 'incorrect');
  }   }
  next if ($statusflg eq '' && $submitonly eq 'yes');  
   
  $ctr++;   $ctr++;
  if ( $Apache::grades::viewgrades eq 'F' ) {   my $section = $classlist->{$student}->[&Apache::loncoursedata::CL_SECTION()];
     $gradeTable.='<tr bgcolor="#ffffe6">'.          my $group = $classlist->{$student}->[&Apache::loncoursedata::CL_GROUP()];
  '<td align="center"><input type=checkbox name="stuinfo" value="'.   if ( $perm{'vgr'} eq 'F' ) {
  $student.':'.$$fullname{$student}.'"></td>'."\n".      if ($ctr%2 ==1) {
  '<td>&nbsp;'.$$fullname{$student}.'&nbsp;</td>'."\n".   $gradeTable.= &Apache::loncommon::start_data_table_row();
  '<td>&nbsp;'.$uname.'&nbsp;</td>'."\n".      }
  '<td align="middle">&nbsp;'.$udom.'&nbsp;</td>'."\n";      $gradeTable.='<td align="right">'.$ctr.'&nbsp;</td>'.
                      '<td align="center"><label><input type="checkbox" name="stuinfo" value="'.
     foreach (sort keys(%status)) {                 $student.':'.$$fullname{$student}.':::SECTION'.$section.
  next if (/^resource.*?submitted_by$/);         ')&nbsp;" />&nbsp;&nbsp;</label></td>'."\n".'<td>'.
  $gradeTable.='<td align="middle">&nbsp;'.$status{$_}.'&nbsp;</td>'."\n";         &nameUserString(undef,$$fullname{$student},$uname,$udom).
          '&nbsp;'.$section.($group ne '' ?'/'.$group:'').'</td>'."\n";
   
       if ($submitonly ne 'all') {
    foreach (sort(keys(%status))) {
       next if ($_ =~ /^resource.*?submitted_by$/);
       $gradeTable.='<td align="center">&nbsp;'.&mt($status{$_}).'&nbsp;</td>'."\n";
    }
       }
   #    $gradeTable.='<td></td>' if ($ctr%2 ==1);
       if ($ctr%2 ==0) {
    $gradeTable.=&Apache::loncommon::end_data_table_row()."\n";
     }      }
     $gradeTable.='</tr>'."\n";  
  }   }
     }      }
     $gradeTable.='</table></td></tr></table>'.      if ($ctr%2 ==1) {
  '<input type="button" '.   $gradeTable.='<td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td>';
  'onClick="javascript:checkSelect(this.form.stuinfo);" '.      if (($submitonly ne 'queued') && ($submitonly ne 'all')) {
  'value="'.$viewgrade.'" /></form>'."\n";   foreach (@$partlist) {
       $gradeTable.='<td>&nbsp;</td>';
    }
       } elsif ($submitonly eq 'queued') {
    $gradeTable.='<td>&nbsp;</td>';
       }
    $gradeTable.=&Apache::loncommon::end_data_table_row();
       }
   
       $gradeTable.=&Apache::loncommon::end_data_table()."\n".
           '<input type="button" '.
           'onclick="javascript:checkSelect(this.form.stuinfo);" '.
           'value="'.&mt('Next').' &rarr;" /></form>'."\n";
     if ($ctr == 0) {      if ($ctr == 0) {
  $gradeTable='<br />&nbsp;<font color="red">'.   my $num_students=(scalar(keys(%$fullname)));
     'No submission found for this resource.</font><br />';   if ($num_students eq 0) {
       $gradeTable='<br />&nbsp;<span class="LC_warning">'.&mt('There are no students currently enrolled.').'</span>';
    } else {
       my $submissions='submissions';
       if ($submitonly eq 'incorrect') { $submissions = 'incorrect submissions'; }
       if ($submitonly eq 'graded'   ) { $submissions = 'ungraded submissions'; }
       if ($submitonly eq 'queued'   ) { $submissions = 'queued submissions'; }
       $gradeTable='<br />&nbsp;<span class="LC_warning">'.
    &mt('No '.$submissions.' found for this resource for any students. ([quant,_1,student] checked for '.$submissions.')',
       $num_students).
    '</span><br />';
    }
     } elsif ($ctr == 1) {      } elsif ($ctr == 1) {
  $gradeTable =~ s/type=checkbox/type=checkbox checked/;   $gradeTable =~ s/type="checkbox"/type="checkbox" checked="checked"/;
     }      }
     $gradeTable.=&show_grading_menu_form($symb,$url);  
     $request->print($gradeTable);      $request->print($gradeTable);
     return '';      return '';
 }  }
   
 #---- Called from the listStudents routine  #---- Called from the listStudents routine
   
   sub check_script {
       my ($form,$type) = @_;
       my $chkallscript = &Apache::lonhtmlcommon::scripttag('
       function checkall() {
           for (i=0; i<document.forms.'.$form.'.elements.length; i++) {
               ele = document.forms.'.$form.'.elements[i];
               if (ele.name == "'.$type.'") {
               document.forms.'.$form.'.elements[i].checked=true;
                                          }
           }
       }
   
       function checksec() {
           for (i=0; i<document.forms.'.$form.'.elements.length; i++) {
               ele = document.forms.'.$form.'.elements[i];
              string = document.forms.'.$form.'.chksec.value;
              if
             (ele.value.indexOf(":::SECTION"+string)>0) {
                 document.forms.'.$form.'.elements[i].checked=true;
               }
           }
       }
   
   
       function uncheckall() {
           for (i=0; i<document.forms.'.$form.'.elements.length; i++) {
               ele = document.forms.'.$form.'.elements[i];
               if (ele.name == "'.$type.'") {
               document.forms.'.$form.'.elements[i].checked=false;
                                          }
           }
       }
   
   '."\n");
       return $chkallscript;
   }
   
   sub check_buttons {
       my $buttons.='<input type="button" onclick="checkall()" value="'.&mt('Check All').'" />';
       $buttons.='<input type="button" onclick="uncheckall()" value="'.&mt('Uncheck All').'" />&nbsp;';
       $buttons.='<input type="button" onclick="checksec()" value="'.&mt('Check Section/Group').'" />';
       $buttons.='<input type="text" size="5" name="chksec" />&nbsp;';
       return $buttons;
   }
   
 #     Displays the submissions for one student or a group of students  #     Displays the submissions for one student or a group of students
 sub processGroup {  sub processGroup {
     my ($request)  = shift;      my ($request,$symb) = @_;
     my $ctr        = 0;      my $ctr        = 0;
     my @stuchecked = (ref($ENV{'form.stuinfo'}) ? @{$ENV{'form.stuinfo'}}      my @stuchecked = &Apache::loncommon::get_env_multiple('form.stuinfo');
       : ($ENV{'form.stuinfo'}));  
     my $total      = scalar(@stuchecked)-1;      my $total      = scalar(@stuchecked)-1;
   
     foreach (@stuchecked) {      foreach my $student (@stuchecked) {
  my ($uname,$udom,$fullname) = split(/:/);   my ($uname,$udom,$fullname) = split(/:/,$student);
  $ENV{'form.student'}        = $uname;   $env{'form.student'}        = $uname;
  $ENV{'form.userdom'}        = $udom;   $env{'form.userdom'}        = $udom;
  $ENV{'form.fullname'}       = $fullname;   $env{'form.fullname'}       = $fullname;
  &submission($request,$ctr,$total);   &submission($request,$ctr,$total,$symb);
  $ctr++;   $ctr++;
     }      }
     return '';      return '';
Line 451  sub processGroup { Line 1453  sub processGroup {
 #--- Javascript to handle the submission page functionality ---  #--- Javascript to handle the submission page functionality ---
 sub sub_page_js {  sub sub_page_js {
     my $request = shift;      my $request = shift;
     $request->print(<<SUBJAVASCRIPT);      my $alertmsg = &mt('A number equal or greater than 0 is expected. Entered value = ');
 <script type="text/javascript" language="javascript">      &js_escape(\$alertmsg);
   function updateRadio(radioButton,formtextbox,formsel,scores,weight) {      $request->print(&Apache::lonhtmlcommon::scripttag(<<SUBJAVASCRIPT));
      var pts = formtextbox.value;      function updateRadio(formname,id,weight) {
      var resetbox =false;   var gradeBox = formname["GD_BOX"+id];
      if (isNaN(pts) || pts < 0) {   var radioButton = formname["RADVAL"+id];
         alert("A number equal or greater than 0 is expected. Entered value = "+pts);   var oldpts = formname["oldpts"+id].value;
         for (var i=0; i<radioButton.length; i++) {   var pts = checkSolved(formname,id) == 'update' ? gradeBox.value : oldpts;
            if (radioButton[i].checked) {   gradeBox.value = pts;
       formtextbox.value = i;   var resetbox = false;
       resetbox = true;   if (isNaN(pts) || pts < 0) {
    }      alert("$alertmsg"+pts);
       for (var i=0; i<radioButton.length; i++) {
    if (radioButton[i].checked) {
       gradeBox.value = i;
       resetbox = true;
    }
       }
       if (!resetbox) {
    formtextbox.value = "";
       }
       return;
  }   }
  if (!resetbox) {  
    formtextbox.value = "";   if (pts > weight) {
       var resp = confirm("You entered a value ("+pts+
          ") greater than the weight for the part. Accept?");
       if (resp == false) {
    gradeBox.value = oldpts;
    return;
       }
  }   }
  return;  
      }  
   
      if (pts > weight) {   for (var i=0; i<radioButton.length; i++) {
         var resp = confirm("You entered a value ("+pts+      radioButton[i].checked=false;
           ") greater than the weight for the part. Accept?");      if (pts == i && pts != "") {
         if (resp == false) {   radioButton[i].checked=true;
            formtextbox.value = "";      }
            return;   }
        }   updateSelect(formname,id);
    formname["stores"+id].value = "0";
     }      }
   
     for (var i=0; i<radioButton.length; i++) {      function writeBox(formname,id,pts) {
  radioButton[i].checked=false;   var gradeBox = formname["GD_BOX"+id];
  if (pts == i) {   if (checkSolved(formname,id) == 'update') {
    radioButton[i].checked=true;      gradeBox.value = pts;
    } else {
       var oldpts = formname["oldpts"+id].value;
       gradeBox.value = oldpts;
       var radioButton = formname["RADVAL"+id];
       for (var i=0; i<radioButton.length; i++) {
    radioButton[i].checked=false;
    if (i == oldpts) {
       radioButton[i].checked=true;
    }
       }
  }   }
    formname["stores"+id].value = "0";
    updateSelect(formname,id);
    return;
     }      }
     updateSelect(formsel);  
     scores.value = "0";  
   }  
   
   function writeBox(formrad,formsel,pts,scores) {      function clearRadBox(formname,id) {
     formrad.value = pts;   if (checkSolved(formname,id) == 'noupdate') {
     scores.value = "0";      updateSelect(formname,id);
     updateSelect(formsel,pts);      return;
     return;   }
   }   gradeSelect = formname["GD_SEL"+id];
    for (var i=0; i<gradeSelect.length; i++) {
       if (gradeSelect[i].selected) {
    var selectx=i;
       }
    }
    var stores = formname["stores"+id];
    if (selectx == stores.value) { return };
    var gradeBox = formname["GD_BOX"+id];
    gradeBox.value = "";
    var radioButton = formname["RADVAL"+id];
    for (var i=0; i<radioButton.length; i++) {
       radioButton[i].checked=false;
    }
    stores.value = selectx;
       }
   
   function clearRadBox(radioButton,formbox,formsel,scores) {      function checkSolved(formname,id) {
     for (var i=0; i<formsel.length; i++) {   if (formname["solved"+id].value == "correct_by_student" && formname.overRideScore.value == 'no') {
  if (formsel[i].selected) {      var reply = confirm("This problem has been graded correct by the computer. Do you want to change the score?");
     var selectx=i;      if (!reply) {return "noupdate";}
       formname.overRideScore.value = 'yes';
  }   }
    return "update";
     }      }
     if (selectx == scores.value) { return };  
     formbox.value = "";      function updateSelect(formname,id) {
     for (var i=0; i<radioButton.length; i++) {   formname["GD_SEL"+id][0].selected = true;
  radioButton[i].checked=false;   return;
     }      }
     scores.value = selectx;  
   }  
   
   function updateSelect(formsel) {  //=========== Check that a point is assigned for all the parts  ============
     formsel[0].selected = true;      function checksubmit(formname,val,total,parttot) {
     return;   formname.gradeOpt.value = val;
   }   if (val == "Save & Next") {
       for (i=0;i<=total;i++) {
    for (j=0;j<parttot;j++) {
       var partid = formname["partid"+i+"_"+j].value;
       if (formname["GD_SEL"+i+"_"+partid][0].selected) {
    var points = formname["GD_BOX"+i+"_"+partid].value;
    if (points == "") {
       var name = formname["name"+i].value;
       var studentID = (name != '' ? name : formname["unamedom"+i].value);
       var resp = confirm("You did not assign a score for "+studentID+
          ", part "+partid+". Continue?");
       if (resp == false) {
    formname["GD_BOX"+i+"_"+partid].focus();
    return false;
       }
    }
       }
    }
       }
    }
    formname.submit();
       }
   
 //=================== Check that a point is assigned for all the parts  ==============  //======= Check that a score is assigned for all the problems (page/sequence grading only) =========
   function checksubmit(val,total,parttot) {      function checkSubmitPage(formname,total) {
      document.SCORE.gradeOpt.value = val;   noscore = new Array(100);
      if (val == "Save & Next") {   var ptr = 0;
  for (i=0;i<=total;i++) {   for (i=1;i<total;i++) {
    for (j=0;j<parttot;j++) {      var partid = formname["q_"+i].value;
       var partid = eval("document.SCORE.partid"+i+"_"+j+".value");      if (formname["GD_SEL"+i+"_"+partid][0].selected) {
       var selopt = eval("document.SCORE.GD_SEL"+i+"_"+partid);   var points = formname["GD_BOX"+i+"_"+partid].value;
       if (selopt[0].selected) {   var status = formname["solved"+i+"_"+partid].value;
  var points = eval("document.SCORE.GD_BOX"+i+"_"+partid+".value");   if (points == "" && status != "correct_by_student") {
  if (points == "") {      noscore[ptr] = i;
      var name = eval("document.SCORE.name"+i+".value");      ptr++;
      alert("Please assign a score for "+name+", part "+partid+".");   }
      return false;      }
  }   }
       }   if (ptr != 0) {
       var sense = ptr == 1 ? ": " : "s: ";
       var prolist = "";
       if (ptr == 1) {
    prolist = noscore[0];
       } else {
    var i = 0;
    while (i < ptr-1) {
       prolist += noscore[i]+", ";
       i++;
    }
    prolist += "and "+noscore[i];
       }
       var resp = confirm("You did not assign any score for the following problem"+sense+prolist+". Continue?");
       if (resp == false) {
    return false;
       }
    }
   
   }   formname.submit();
        }      }
   SUBJAVASCRIPT
   }
   
      }  #--- javascript for grading message center
      document.SCORE.submit();  sub sub_grademessage_js {
  }      my $request = shift;
       my $iconpath = $request->dir_config('lonIconsURL');
       &commonJSfunctions($request);
   
 //===================== Show list of keywords ====================      my $inner_js_msg_central= (<<INNERJS);
   function keywords(keyform) {  <script type="text/javascript">
     var keywds = keyform.value;      function checkInput() {
     var nret = prompt("Keywords list, separated by a space. Add/delete to list if desired.",keywds);        opener.document.SCORE.msgsub.value = opener.checkEntities(document.msgcenter.msgsub.value);
     if (nret==null) return;        var nmsg   = opener.document.SCORE.savemsgN.value;
     keyform.value = nret;        var usrctr = document.msgcenter.usrctr.value;
         var newval = opener.document.SCORE["newmsg"+usrctr];
         newval.value = opener.checkEntities(document.msgcenter.newmsg.value);
   
         var msgchk = "";
         if (document.msgcenter.subchk.checked) {
            msgchk = "msgsub,";
         }
         var includemsg = 0;
         for (var i=1; i<=nmsg; i++) {
             var opnmsg = opener.document.SCORE["savemsg"+i];
             var frmmsg = document.msgcenter["msg"+i];
             opnmsg.value = opener.checkEntities(frmmsg.value);
             var showflg = opener.document.SCORE["shownOnce"+i];
             showflg.value = "1";
             var chkbox = document.msgcenter["msgn"+i];
             if (chkbox.checked) {
                msgchk += "savemsg"+i+",";
                includemsg = 1;
             }
         }
         if (document.msgcenter.newmsgchk.checked) {
            msgchk += "newmsg"+usrctr;
            includemsg = 1;
         }
         imgformname = opener.document.SCORE["mailicon"+usrctr];
         imgformname.src = "$iconpath/"+((includemsg) ? "mailto.gif" : "mailbkgrd.gif");
         var includemsg = opener.document.SCORE["includemsg"+usrctr];
         includemsg.value = msgchk;
   
         self.close()
   
     document.SCORE.refresh.value = "on";  
     if (document.SCORE.keywords.value != "") {  
  document.SCORE.submit();  
     }      }
     return;  </script>
   }  INNERJS
   
       my $start_page_msg_central =
           &Apache::loncommon::start_page('Message Central',$inner_js_msg_central,
          {'js_ready'  => 1,
    'only_body' => 1,
    'bgcolor'   =>'#FFFFFF',});
       my $end_page_msg_central =
    &Apache::loncommon::end_page({'js_ready' => 1});
   
       my $docopen=&Apache::lonhtmlcommon::javascript_docopen();
       $docopen=~s/^document\.//;
   
       my %html_js_lt = &Apache::lonlocal::texthash(
                   comp => 'Compose Message for: ',
                   incl => 'Include',
                   type => 'Type',
                   subj => 'Subject',
                   mesa => 'Message',
                   new  => 'New',
                   save => 'Save',
                   canc => 'Cancel',
                );
       &html_escape(\%html_js_lt);
       &js_escape(\%html_js_lt);
       $request->print(&Apache::lonhtmlcommon::scripttag(<<SUBJAVASCRIPT));
   
 //===================== Script to view submitted by ==================  //===================== Script to view submitted by ==================
   function viewSubmitter(submitter) {    function viewSubmitter(submitter) {
Line 562  sub sub_page_js { Line 1698  sub sub_page_js {
     return;      return;
   }    }
   
 //===================== Script to add keyword(s) ==================  
   function getSel() {  
     if (document.getSelection) txt = document.getSelection();  
     else if (document.selection) txt = document.selection.createRange().text;  
     else return;  
     var cleantxt = txt.replace(new RegExp('([\\f\\n\\r\\t\\v ])+', 'g')," ");  
     if (cleantxt=="") {  
  alert("Please select a word or group of words from document and then click this link.");  
  return;  
     }  
     var nret = prompt("Add selection to keyword list? Edit if desired.",cleantxt);  
     if (nret==null) return;  
     var curlist = document.SCORE.keywords.value;  
     document.SCORE.keywords.value = curlist+" "+nret;  
     document.SCORE.refresh.value = "on";  
     if (document.SCORE.keywords.value != "") {  
  document.SCORE.submit();  
     }  
     return;  
   }  
   
 //====================== Script for composing message ==============  //====================== Script for composing message ==============
      // preload images
      img1 = new Image();
      img1.src = "$iconpath/mailbkgrd.gif";
      img2 = new Image();
      img2.src = "$iconpath/mailto.gif";
   
   function msgCenter(msgform,usrctr,fullname) {    function msgCenter(msgform,usrctr,fullname) {
     var Nmsg  = msgform.savemsgN.value;      var Nmsg  = msgform.savemsgN.value;
     savedMsgHeader(Nmsg,usrctr,fullname);      savedMsgHeader(Nmsg,usrctr,fullname);
     var subject = msgform.msgsub.value;      var subject = msgform.msgsub.value;
     var rtrchk  = eval("document.SCORE.includemsg"+usrctr);      var msgchk = document.SCORE["includemsg"+usrctr].value;
     var msgchk = rtrchk.value;  
     re = /msgsub/;      re = /msgsub/;
     var shwsel = "";      var shwsel = "";
     if (re.test(msgchk)) { shwsel = "checked" }      if (re.test(msgchk)) { shwsel = "checked" }
     displaySubject(subject,shwsel);      subject = (document.SCORE.shownSub.value == 0 ? checkEntities(subject) : subject);
       displaySubject(checkEntities(subject),shwsel);
     for (var i=1; i<=Nmsg; i++) {      for (var i=1; i<=Nmsg; i++) {
  var testpt = "savemsg"+i+",";   var testmsg = "savemsg"+i+",";
  re = /testpt/;   re = new RegExp(testmsg,"g");
  shwsel = "";   shwsel = "";
  if (re.test(msgchk)) { shwsel = "checked" }   if (re.test(msgchk)) { shwsel = "checked" }
  var message = eval("document.SCORE.savemsg"+i+".value");   var message = document.SCORE["savemsg"+i].value;
  displaySavedMsg(i,message,shwsel);   message = (document.SCORE["shownOnce"+i].value == 0 ? checkEntities(message) : message);
    displaySavedMsg(i,message,shwsel); //I do not get it. w/o checkEntities on saved messages,
                                      //any &lt; is already converted to <, etc. However, only once!!
     }      }
     newmsg = eval("document.SCORE.newmsg"+usrctr+".value");      newmsg = document.SCORE["newmsg"+usrctr].value;
     shwsel = "";      shwsel = "";
     re = /newmsg/;      re = /newmsg/;
     if (re.test(msgchk)) { shwsel = "checked" }      if (re.test(msgchk)) { shwsel = "checked" }
Line 611  sub sub_page_js { Line 1734  sub sub_page_js {
     return;      return;
   }    }
   
     function checkEntities(strx) {
       if (strx.length == 0) return strx;
       var orgStr = ["&", "<", ">", '"']; 
       var newStr = ["&amp;", "&lt;", "&gt;", "&quot;"];
       var counter = 0;
       while (counter < 4) {
    strx = strReplace(strx,orgStr[counter],newStr[counter]);
    counter++;
       }
       return strx;
     }
   
     function strReplace(strx, orgStr, newStr) {
       return strx.split(orgStr).join(newStr);
     }
   
   function savedMsgHeader(Nmsg,usrctr,fullname) {    function savedMsgHeader(Nmsg,usrctr,fullname) {
     var height = 30*Nmsg+250;      var height = 70*Nmsg+250;
     var scrollbar = "no";  
     if (height > 600) {      if (height > 600) {
  height = 600;   height = 600;
  scrollbar = "yes";  
     }      }
 /*    if (window.pWin)      var xpos = (screen.width-600)/2;
  window.pWin.close(); */      xpos = (xpos < 0) ? '0' : xpos;
     pWin = window.open('', 'MessageCenter', 'toolbar=no,location=no,scrollbars='+scrollbar+',screenx=70,screeny=75,width=600,height='+height);      var ypos = (screen.height-height)/2-30;
     pWin.document.write("<html><head>");      ypos = (ypos < 0) ? '0' : ypos;
     pWin.document.write("<title>Message Central</title>");  
       pWin = window.open('', 'MessageCenter', 'resizable=yes,toolbar=no,location=no,scrollbars=yes,screenx='+xpos+',screeny='+ypos+',width=700,height='+height);
     pWin.document.write("<script language=javascript>");      pWin.focus();
     pWin.document.write("function checkInput() {");      pDoc = pWin.document;
     pWin.document.write("  opener.document.SCORE.msgsub.value = document.msgcenter.msgsub.value;");      pDoc.$docopen;
     pWin.document.write("  var nmsg   = opener.document.SCORE.savemsgN.value;");      pDoc.write('$start_page_msg_central');
     pWin.document.write("  var usrctr = document.msgcenter.usrctr.value;");  
     pWin.document.write("  var newval = eval(\\"opener.document.SCORE.newmsg\\"+usrctr);");      pDoc.write("<form action=\\"inactive\\" name=\\"msgcenter\\">");
     pWin.document.write("  newval.value = document.msgcenter.newmsg.value;");      pDoc.write("<input value=\\""+usrctr+"\\" name=\\"usrctr\\" type=\\"hidden\\">");
       pDoc.write("<h1>&nbsp;$html_js_lt{'comp'}\"+fullname+\"<\\/h1>");
     pWin.document.write("  var msgchk = \\"\\";");  
     pWin.document.write("  if (document.msgcenter.subchk.checked) {");      pDoc.write('<table style="border:1px solid black;"><tr>');
     pWin.document.write("     msgchk = \\"msgsub,\\";");      pDoc.write("<td><b>$html_js_lt{'incl'}<\\/b><\\/td><td><b>$html_js_lt{'type'}<\\/b><\\/td><td><b>$html_js_lt{'mesa'}<\\/td><\\/tr>");
     pWin.document.write("  }");  
     pWin.document.write(   "for (var i=1; i<=nmsg; i++) {");  
     pWin.document.write("      var opnmsg = eval(\\"opener.document.SCORE.savemsg\\"+i);");  
     pWin.document.write("      var frmmsg = eval(\\"document.msgcenter.msg\\"+i);");  
     pWin.document.write("      opnmsg.value = frmmsg.value;");  
     pWin.document.write("      var chkbox = eval(\\"document.msgcenter.msgn\\"+i);");  
     pWin.document.write("      if (chkbox.checked) {");  
     pWin.document.write("         msgchk += \\"savemsg\\"+i+\\",\\";");  
     pWin.document.write("      }");  
     pWin.document.write("  }");  
     pWin.document.write("  if (document.msgcenter.newmsgchk.checked) {");  
     pWin.document.write("     msgchk += \\"newmsg\\"+usrctr;");  
     pWin.document.write("  }");  
     pWin.document.write("  var includemsg = eval(\\"opener.document.SCORE.includemsg\\"+usrctr);");  
     pWin.document.write("  includemsg.value = msgchk;");  
   
     pWin.document.write("  self.close()");  
   
     pWin.document.write("}");  
   
     pWin.document.write("<");  
     pWin.document.write("/script>");  
   
     pWin.document.write("</head><body bgcolor=white>");  
   
     pWin.document.write("<form action=\\"inactive\\" name=\\"msgcenter\\">");  
     pWin.document.write("<input value=\\""+usrctr+"\\" name=\\"usrctr\\" type=\\"hidden\\">");  
     pWin.document.write("<font color=\\"green\\" size=+1>&nbsp;Compose Message for \"+fullname+\"</font><br><br>");  
   
     pWin.document.write("<table border=0 width=100%><tr><td bgcolor=\\"#777777\\">");  
     pWin.document.write("<table border=0 width=100%><tr bgcolor=\\"#ddffff\\">");  
     pWin.document.write("<td><b>Type</b></td><td><b>Include</b></td><td><b>Message</td></tr>");  
 }  }
     function displaySubject(msg,shwsel) {      function displaySubject(msg,shwsel) {
     pWin.document.write("<tr bgcolor=\\"#ffffdd\\">");      pDoc = pWin.document;
     pWin.document.write("<td>Subject</td>");      pDoc.write("<tr>");
     pWin.document.write("<td align=\\"center\\"><input name=\\"subchk\\" type=\\"checkbox\\"" +shwsel+"></td>");      pDoc.write("<td align=\\"center\\"><input name=\\"subchk\\" type=\\"checkbox\\"" +shwsel+"><\\/td>");
     pWin.document.write("<td><input name=\\"msgsub\\" type=\\"text\\" value=\\""+msg+"\\"size=\\"60\\" maxlength=\\"80\\"></td></tr>");      pDoc.write("<td>$html_js_lt{'subj'}<\\/td>");
       pDoc.write("<td><input name=\\"msgsub\\" type=\\"text\\" value=\\""+msg+"\\"size=\\"40\\" maxlength=\\"80\\"><\\/td><\\/tr>");
 }  }
   
 function displaySavedMsg(ctr,msg,shwsel) {    function displaySavedMsg(ctr,msg,shwsel) {
     pWin.document.write("<tr bgcolor=\\"#ffffdd\\">");      pDoc = pWin.document;
     pWin.document.write("<td align=\\"center\\">"+ctr+"</td>");      pDoc.write("<tr>");
     pWin.document.write("<td align=\\"center\\"><input name=\\"msgn"+ctr+"\\" type=\\"checkbox\\"" +shwsel+"></td>");      pDoc.write("<td align=\\"center\\"><input name=\\"msgn"+ctr+"\\" type=\\"checkbox\\"" +shwsel+"><\\/td>");
     pWin.document.write("<td><input name=\\"msg"+ctr+"\\" type=\\"text\\" value=\\""+msg+"\\" size=\\"60\\" maxlength=\\"80\\"></td></tr>");      pDoc.write("<td align=\\"center\\">"+ctr+"<\\/td>");
       pDoc.write("<td><textarea name=\\"msg"+ctr+"\\" cols=\\"60\\" rows=\\"3\\">"+msg+"<\\/textarea><\\/td><\\/tr>");
 }  }
   
   function newMsg(newmsg,shwsel) {    function newMsg(newmsg,shwsel) {
     pWin.document.write("<tr bgcolor=\\"#ffffdd\\">");      pDoc = pWin.document;
     pWin.document.write("<td align=\\"center\\">New</td>");      pDoc.write("<tr>");
     pWin.document.write("<td align=\\"center\\"><input name=\\"newmsgchk\\" type=\\"checkbox\\"" +shwsel+"></td>");      pDoc.write("<td align=\\"center\\"><input name=\\"newmsgchk\\" type=\\"checkbox\\"" +shwsel+"><\\/td>");
     pWin.document.write("<td><input name=\\"newmsg\\" type=\\"text\\" onchange=\\"javascript:this.form.newmsgchk.checked=true\\" value=\\""+newmsg+"\\" size=\\"60\\" maxlength=\\"80\\"></td></tr>");      pDoc.write("<td align=\\"center\\">$html_js_lt{'new'}<\\/td>");
       pDoc.write("<td><textarea name=\\"newmsg\\" cols=\\"60\\" rows=\\"3\\" onchange=\\"javascript:this.form.newmsgchk.checked=true\\" >"+newmsg+"<\\/textarea><\\/td><\\/tr>");
 }  }
   
   function msgTail() {    function msgTail() {
     pWin.document.write("</table>");      pDoc = pWin.document;
     pWin.document.write("</td></tr></table>&nbsp;");      //pDoc.write("<\\/table>");
     pWin.document.write("<input type=\\"button\\" value=\\"Save\\" onClick=\\"javascript:checkInput()\\">&nbsp;&nbsp;");      pDoc.write("<\\/td><\\/tr><\\/table>&nbsp;");
     pWin.document.write("<input type=\\"button\\" value=\\"Cancel\\" onClick=\\"self.close()\\"><br><br>");      pDoc.write("<input type=\\"button\\" value=\\"$html_js_lt{'save'}\\" onclick=\\"javascript:checkInput()\\">&nbsp;&nbsp;");
     pWin.document.write("</form>");      pDoc.write("<input type=\\"button\\" value=\\"$html_js_lt{'canc'}\\" onclick=\\"self.close()\\"><br /><br />");
     pWin.document.write("</body></html>");      pDoc.write("<\\/form>");
       pDoc.write('$end_page_msg_central');
       pDoc.close();
   }
   
   SUBJAVASCRIPT
 }  }
   
   #--- javascript for essay type problem --
   sub sub_page_kw_js {
       my $request = shift;
   
       unless ($env{'form.compmsg'}) {
           &commonJSfunctions($request);
       }
   
       my $inner_js_highlight_central= (<<INNERJS);
   <script type="text/javascript">
       function updateChoice(flag) {
         opener.document.SCORE.kwclr.value = opener.radioSelection(document.hlCenter.kwdclr);
         opener.document.SCORE.kwsize.value = opener.radioSelection(document.hlCenter.kwdsize);
         opener.document.SCORE.kwstyle.value = opener.radioSelection(document.hlCenter.kwdstyle);
         opener.document.SCORE.refresh.value = "on";
         if (opener.document.SCORE.keywords.value!=""){
            opener.document.SCORE.submit();
         }
         self.close()
       }
   </script>
   INNERJS
   
       my $start_page_highlight_central =
           &Apache::loncommon::start_page('Highlight Central',
                                          $inner_js_highlight_central,
                                          {'js_ready'  => 1,
                                           'only_body' => 1,
                                           'bgcolor'   =>'#FFFFFF',});
       my $end_page_highlight_central =
           &Apache::loncommon::end_page({'js_ready' => 1});
   
       my $docopen=&Apache::lonhtmlcommon::javascript_docopen();
       $docopen=~s/^document\.//;
   
       my %js_lt = &Apache::lonlocal::texthash(
                   keyw => 'Keywords list, separated by a space. Add/delete to list if desired.',
                   plse => 'Please select a word or group of words from document and then click this link.',
                   adds => 'Add selection to keyword list? Edit if desired.',
                   col1 => 'red',
                   col2 => 'green',
                   col3 => 'blue',
                   siz1 => 'normal',
                   siz2 => '+1',
                   siz3 => '+2',
                   sty1 => 'normal',
                   sty2 => 'italic',
                   sty3 => 'bold',
                );
       my %html_js_lt = &Apache::lonlocal::texthash(
                   save => 'Save',
                   canc => 'Cancel',
                   kehi => 'Keyword Highlight Options',
                   txtc => 'Text Color',
                   font => 'Font Size',
                   fnst => 'Font Style',
                );
       &js_escape(\%js_lt);
       &html_escape(\%html_js_lt);
       &js_escape(\%html_js_lt);
       $request->print(&Apache::lonhtmlcommon::scripttag(<<SUBJAVASCRIPT));
   
   //===================== Show list of keywords ====================
     function keywords(formname) {
       var nret = prompt("$js_lt{'keyw'}",formname.keywords.value);
       if (nret==null) return;
       formname.keywords.value = nret;
   
       if (formname.keywords.value != "") {
           formname.refresh.value = "on";
           formname.submit();
       }
       return;
     }
   
   //===================== Script to add keyword(s) ==================
     function getSel() {
       if (document.getSelection) txt = document.getSelection();
       else if (document.selection) txt = document.selection.createRange().text;
       else return;
       if (typeof(txt) != 'string') {
           txt = String(txt);
       }
       var cleantxt = txt.replace(new RegExp('([\\f\\n\\r\\t\\v ])+', 'g')," ");
       if (cleantxt=="") {
           alert("$js_lt{'plse'}");
           return;
       }
       var nret = prompt("$js_lt{'adds'}",cleantxt);
       if (nret==null) return;
       document.SCORE.keywords.value = document.SCORE.keywords.value+" "+nret;
       if (document.SCORE.keywords.value != "") {
           document.SCORE.refresh.value = "on";
           document.SCORE.submit();
       }
       return;
     }
   
 //====================== Script for keyword highlight options ==============  //====================== Script for keyword highlight options ==============
   function kwhighlight() {    function kwhighlight() {
     var kwclr    = document.SCORE.kwclr.value;      var kwclr    = document.SCORE.kwclr.value;
Line 706  function displaySavedMsg(ctr,msg,shwsel) Line 1917  function displaySavedMsg(ctr,msg,shwsel)
     var redsel = "";      var redsel = "";
     var grnsel = "";      var grnsel = "";
     var blusel = "";      var blusel = "";
     if (kwclr=="red")   {var redsel="checked"};      var txtcol1 = "$js_lt{'col1'}";
     if (kwclr=="green") {var grnsel="checked"};      var txtcol2 = "$js_lt{'col2'}";
     if (kwclr=="blue")  {var blusel="checked"};      var txtcol3 = "$js_lt{'col3'}";
       var txtsiz1 = "$js_lt{'siz1'}";
       var txtsiz2 = "$js_lt{'siz2'}";
       var txtsiz3 = "$js_lt{'siz3'}";
       var txtsty1 = "$js_lt{'sty1'}";
       var txtsty2 = "$js_lt{'sty2'}";
       var txtsty3 = "$js_lt{'sty3'}";
       if (kwclr=="red")   {var redsel="checked='checked'"};
       if (kwclr=="green") {var grnsel="checked='checked'"};
       if (kwclr=="blue")  {var blusel="checked='checked'"};
     var sznsel = "";      var sznsel = "";
     var sz1sel = "";      var sz1sel = "";
     var sz2sel = "";      var sz2sel = "";
     if (kwsize=="0")  {var sznsel="checked"};      if (kwsize=="0")  {var sznsel="checked='checked'"};
     if (kwsize=="+1") {var sz1sel="checked"};      if (kwsize=="+1") {var sz1sel="checked='checked'"};
     if (kwsize=="+2") {var sz2sel="checked"};      if (kwsize=="+2") {var sz2sel="checked='checked'"};
     var synsel = "";      var synsel = "";
     var syisel = "";      var syisel = "";
     var sybsel = "";      var sybsel = "";
     if (kwstyle=="")    {var synsel="checked"};      if (kwstyle=="")    {var synsel="checked='checked'"};
     if (kwstyle=="<i>") {var syisel="checked"};      if (kwstyle=="<i>") {var syisel="checked='checked'"};
     if (kwstyle=="<b>") {var sybsel="checked"};      if (kwstyle=="<b>") {var sybsel="checked='checked'"};
     highlightCentral();      highlightCentral();
     highlightbody('red','red',redsel,'0','normal',sznsel,'','normal',synsel);      highlightbody('red',txtcol1,redsel,'0',txtsiz1,sznsel,'',txtsty1,synsel);
     highlightbody('green','green',grnsel,'+1','+1',sz1sel,'<i>','italic',syisel);      highlightbody('green',txtcol2,grnsel,'+1',txtsiz2,sz1sel,'<i>',txtsty2,syisel);
     highlightbody('blue','blue',blusel,'+2','+2',sz2sel,'<b>','bold',sybsel);      highlightbody('blue',txtcol3,blusel,'+2',txtsiz3,sz2sel,'<b>',txtsty3,sybsel);
     highlightend();      highlightend();
     return;      return;
   }    }
   
   
   function highlightCentral() {    function highlightCentral() {
     hwdWin = window.open('', 'KeywordHighlightCentral', 'toolbar=no,location=no,scrollbars=no,width=400,height=300,screenx=100,screeny=75');  //    if (window.hwdWin) window.hwdWin.close();
     hwdWin.document.write("<html><head>");      var xpos = (screen.width-400)/2;
     hwdWin.document.write("<title>Highlight Central</title>");      xpos = (xpos < 0) ? '0' : xpos;
       var ypos = (screen.height-330)/2-30;
     hwdWin.document.write("<script language=javascript>");      ypos = (ypos < 0) ? '0' : ypos;
     hwdWin.document.write("function updateChoice(flag) {");  
     hwdWin.document.write("  opener.document.SCORE.kwclr.value = radioSelection(document.hlCenter.kwdclr);");      hwdWin = window.open('', 'KeywordHighlightCentral', 'resizeable=yes,toolbar=no,location=no,scrollbars=no,width=400,height=300,screenx='+xpos+',screeny='+ypos);
     hwdWin.document.write("  opener.document.SCORE.kwsize.value = radioSelection(document.hlCenter.kwdsize);");      hwdWin.focus();
     hwdWin.document.write("  opener.document.SCORE.kwstyle.value = radioSelection(document.hlCenter.kwdstyle);");      var hDoc = hwdWin.document;
     hwdWin.document.write("  opener.document.SCORE.refresh.value = \\"on\\";");      hDoc.$docopen;
     hwdWin.document.write("  if (opener.document.SCORE.keywords.value!=\\"\\"){");      hDoc.write('$start_page_highlight_central');
     hwdWin.document.write("     opener.document.SCORE.submit();");      hDoc.write("<form action=\\"inactive\\" name=\\"hlCenter\\">");
     hwdWin.document.write("  }");      hDoc.write("<h1>$html_js_lt{'kehi'}<\\/h1>");
     hwdWin.document.write("  self.close()");  
     hwdWin.document.write("}");      hDoc.write('<table border="0" width="100%"><tr style="background-color:#A1D676">');
       hDoc.write("<th>$html_js_lt{'txtc'}<\\/th><th>$html_js_lt{'font'}<\\/th><th>$html_js_lt{'fnst'}<\\/th><\\/tr>");
     hwdWin.document.write("function radioSelection(radioButton) {");  
     hwdWin.document.write("    var selection=null;");  
     hwdWin.document.write("    for (var i=0; i<radioButton.length; i++) {");  
     hwdWin.document.write("        if (radioButton[i].checked) {");  
     hwdWin.document.write("            selection=radioButton[i].value;");  
     hwdWin.document.write("            return selection;");  
     hwdWin.document.write("        }");  
     hwdWin.document.write("    }");  
     hwdWin.document.write("}");  
   
     hwdWin.document.write("<");  
     hwdWin.document.write("/script>");  
   
     hwdWin.document.write("</head><body bgcolor=white>");  
   
     hwdWin.document.write("<form action=\\"inactive\\" name=\\"hlCenter\\">");  
     hwdWin.document.write("<font color=\\"green\\" size=+1>&nbsp;Keyword Highlight Options</font><br><br>");  
   
     hwdWin.document.write("<table border=0 width=100%><tr><td bgcolor=\\"#777777\\">");  
     hwdWin.document.write("<table border=0 width=100%><tr bgcolor=\\"#ddffff\\">");  
     hwdWin.document.write("<td><b>Text Color</b></td><td><b>Font Size</b></td><td><b>Font Style</td></tr>");  
   }    }
   
   function highlightbody(clrval,clrtxt,clrsel,szval,sztxt,szsel,syval,sytxt,sysel) {     function highlightbody(clrval,clrtxt,clrsel,szval,sztxt,szsel,syval,sytxt,sysel) { 
     hwdWin.document.write("<tr bgcolor=\\"#ffffdd\\">");      var hDoc = hwdWin.document;
     hwdWin.document.write("<td align=\\"left\\">");      hDoc.write("<tr>");
     hwdWin.document.write("<input name=\\"kwdclr\\" type=\\"radio\\" value=\\""+clrval+"\\" "+clrsel+">&nbsp;"+clrtxt+"</td>");      hDoc.write("<td align=\\"left\\">");
     hwdWin.document.write("<td align=\\"left\\">");      hDoc.write("<input name=\\"kwdclr\\" type=\\"radio\\" value=\\""+clrval+"\\" "+clrsel+" \\/>&nbsp;"+clrtxt+"<\\/td>");
     hwdWin.document.write("<input name=\\"kwdsize\\" type=\\"radio\\" value=\\""+szval+"\\" "+szsel+">&nbsp;"+sztxt+"</td>");      hDoc.write("<td align=\\"left\\">");
     hwdWin.document.write("<td align=\\"left\\">");      hDoc.write("<input name=\\"kwdsize\\" type=\\"radio\\" value=\\""+szval+"\\" "+szsel+" \\/>&nbsp;"+sztxt+"<\\/td>");
     hwdWin.document.write("<input name=\\"kwdstyle\\" type=\\"radio\\" value=\\""+syval+"\\" "+sysel+">&nbsp;"+sytxt+"</td>");      hDoc.write("<td align=\\"left\\">");
     hwdWin.document.write("</tr>");      hDoc.write("<input name=\\"kwdstyle\\" type=\\"radio\\" value=\\""+syval+"\\" "+sysel+" \\/>&nbsp;"+sytxt+"<\\/td>");
       hDoc.write("<\\/tr>");
   }    }
   
   function highlightend() {     function highlightend() { 
     hwdWin.document.write("</table>");      var hDoc = hwdWin.document;
     hwdWin.document.write("</td></tr></table>&nbsp;");      hDoc.write("<\\/table><br \\/>");
 //    hwdWin.document.write("<input type=\\"button\\" value=\\"Save\\" onClick=\\"javascript:updateChoice(0)\\">&nbsp;&nbsp;");      hDoc.write("<input type=\\"button\\" value=\\"$html_js_lt{'save'}\\" onclick=\\"javascript:updateChoice(1)\\" \\/>&nbsp;&nbsp;");
     hwdWin.document.write("<input type=\\"button\\" value=\\"Save\\" onClick=\\"javascript:updateChoice(1)\\">&nbsp;&nbsp;");      hDoc.write("<input type=\\"button\\" value=\\"$html_js_lt{'canc'}\\" onclick=\\"self.close()\\" \\/><br /><br />");
     hwdWin.document.write("<input type=\\"button\\" value=\\"Cancel\\" onClick=\\"self.close()\\"><br><br>");      hDoc.write("<\\/form>");
     hwdWin.document.write("</form>");      hDoc.write('$end_page_highlight_central');
     hwdWin.document.write("</body></html>");      hDoc.close();
   }    }
   
 </script>  
 SUBJAVASCRIPT  SUBJAVASCRIPT
 }  }
   
   sub get_increment {
       my $increment = $env{'form.increment'};
       if ($increment != 1 && $increment != .5 && $increment != .25 &&
           $increment != .1) {
           $increment = 1;
       }
       return $increment;
   }
   
   sub gradeBox_start {
       return (
           &Apache::loncommon::start_data_table()
          .&Apache::loncommon::start_data_table_header_row()
          .'<th>'.&mt('Part').'</th>'
          .'<th>'.&mt('Points').'</th>'
          .'<th>&nbsp;</th>'
          .'<th>'.&mt('Assign Grade').'</th>'
          .'<th>'.&mt('Weight').'</th>'
          .'<th>'.&mt('Grade Status').'</th>'
          .&Apache::loncommon::end_data_table_header_row()
       );
   }
   
   sub gradeBox_end {
       return (
           &Apache::loncommon::end_data_table()
       );
   }
   #--- displays the grading box, used in essay type problem and grading by page/sequence
   sub gradeBox {
       my ($request,$symb,$uname,$udom,$counter,$partid,$record) = @_;
       my $checkIcon = '<img alt="'.&mt('Check Mark').
    '" src="'.&Apache::loncommon::lonhttpdurl($request->dir_config('lonIconsURL').'/check.gif').'" height="16" border="0" />';
       my $wgt    = &Apache::lonnet::EXT('resource.'.$partid.'.weight',$symb,$udom,$uname);
       my $wgtmsg = ($wgt > 0) ? &mt('(problem weight)') 
                              : '<span class="LC_info">'.&mt('problem weight assigned by computer').'</span>';
       $wgt       = ($wgt > 0 ? $wgt : '1');
       my $score  = ($$record{'resource.'.$partid.'.awarded'} eq '' ?
     '' : &compute_points($$record{'resource.'.$partid.'.awarded'},$wgt));
       my $data_WGT='<input type="hidden" name="WGT'.$counter.'_'.$partid.'" value="'.$wgt.'" />'."\n";
       my $display_part= &get_display_part($partid,$symb);
       my %last_resets = &get_last_resets($symb,$env{'request.course.id'},
          [$partid]);
       my $aggtries = $$record{'resource.'.$partid.'.tries'};
       if ($last_resets{$partid}) {
           $aggtries = &get_num_tries($record,$last_resets{$partid},$partid);
       }
       my $result=&Apache::loncommon::start_data_table_row();
       my $ctr = 0;
       my $thisweight = 0;
       my $increment = &get_increment();
   
       my $radio.='<table border="0"><tr>'."\n";  # display radio buttons in a nice table 10 across
       while ($thisweight<=$wgt) {
    $radio.= '<td><span class="LC_nobreak"><label><input type="radio" name="RADVAL'.$counter.'_'.$partid.'" '.
           'onclick="javascript:writeBox(this.form,\''.$counter.'_'.$partid.'\','.
       $thisweight.')" value="'.$thisweight.'" '.
       ($score eq $thisweight ? 'checked="checked"':'').' /> '.$thisweight."</label></span></td>\n";
    $radio.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');
           $thisweight += $increment;
    $ctr++;
       }
       $radio.='</tr></table>';
   
       my $line.='<input type="text" name="GD_BOX'.$counter.'_'.$partid.'"'.
    ($score ne ''? ' value = "'.$score.'"':'').' size="4" '.
    'onchange="javascript:updateRadio(this.form,\''.$counter.'_'.$partid.'\','.
    $wgt.')" /></td>'."\n";
       $line.='<td>/'.$wgt.' '.$wgtmsg.
    ($$record{'resource.'.$partid.'.solved'} eq 'correct_by_student' ? '&nbsp;'.$checkIcon : '').
    ' </td>'."\n";
       $line.='<td><select name="GD_SEL'.$counter.'_'.$partid.'" '.
    'onchange="javascript:clearRadBox(this.form,\''.$counter.'_'.$partid.'\')" >'."\n";
       if ($$record{'resource.'.$partid.'.solved'} eq 'excused') {
    $line.='<option></option>'.
       '<option value="excused" selected="selected">'.&mt('excused').'</option>';
       } else {
    $line.='<option selected="selected"></option>'.
       '<option value="excused" >'.&mt('excused').'</option>';
       }
       $line.='<option value="reset status">'.&mt('reset status').'</option></select>'."\n";
   
   
       $result .= 
       '<td>'.$data_WGT.$display_part.'</td><td>'.$radio.'</td><td>'.&mt('or').'</td><td>'.$line.'</td>';
       $result.=&Apache::loncommon::end_data_table_row();
       $result.=&Apache::loncommon::start_data_table_row().'<td colspan="6">';
       $result.='<input type="hidden" name="stores'.$counter.'_'.$partid.'" value="" />'."\n".
    '<input type="hidden" name="oldpts'.$counter.'_'.$partid.'" value="'.$score.'" />'."\n".
    '<input type="hidden" name="solved'.$counter.'_'.$partid.'" value="'.
    $$record{'resource.'.$partid.'.solved'}.'" />'."\n".
           '<input type="hidden" name="totaltries'.$counter.'_'.$partid.'" value="'.
           $$record{'resource.'.$partid.'.tries'}.'" />'."\n".
           '<input type="hidden" name="aggtries'.$counter.'_'.$partid.'" value="'.
           $aggtries.'" />'."\n";
       my $res_error;
       $result.=&handback_box($symb,$uname,$udom,$counter,$partid,$record,\$res_error);
       $result.='</td>'.&Apache::loncommon::end_data_table_row();
       if ($res_error) {
           return &navmap_errormsg();
       }
       return $result;
   }
   
   sub handback_box {
       my ($symb,$uname,$udom,$counter,$partid,$record,$res_error_pointer) = @_;
       my ($partlist,$handgrade,$responseType,$numresp,$numessay) = &response_type($symb,$res_error_pointer);
       return unless ($numessay);
       my (@respids);
       my @part_response_id = &flatten_responseType($responseType);
       foreach my $part_response_id (@part_response_id) {
       my ($part,$resp) = @{ $part_response_id };
           if ($part eq $partid) {
               push(@respids,$resp);
           }
       }
       my $result;
       foreach my $respid (@respids) {
    my $prefix = $counter.'_'.$partid.'_'.$respid.'_';
    my $files=&get_submitted_files($udom,$uname,$partid,$respid,$record);
    next if (!@$files);
    my $file_counter = 0;
    foreach my $file (@$files) {
       if ($file =~ /\/portfolio\//) {
                   $file_counter++;
              my ($file_path, $file_disp) = ($file =~ m|(.+/)(.+)$|);
              my ($name,$version,$ext) = &Apache::lonnet::file_name_version_ext($file_disp);
              $file_disp = "$name.$ext";
              $file = $file_path.$file_disp;
              $result.=&mt('Return commented version of [_1] to student.',
       '<span class="LC_filename">'.$file_disp.'</span>');
              $result.='<input type="file"   name="'.$prefix.'returndoc'.$file_counter.'" />'."\n";
              $result.='<input type="hidden" name="'.$prefix.'origdoc'.$file_counter.'" value="'.$file.'" /><br />'."\n";
       }
    }
           if ($file_counter) {
               $result .= '<input type="hidden" name="'.$prefix.'countreturndoc" value="'.$file_counter.'" />'."\n".
                          '<span class="LC_info">'.
                          '('.&mt('File(s) will be uploaded when you click on Save &amp; Next below.',$file_counter).')</span><br /><br />';
           }
       }
       return $result;    
   }
   
 sub show_problem {  sub show_problem {
     my ($request,$symb,$uname,$udom,$removeform) = @_;      my ($request,$symb,$uname,$udom,$removeform,$viewon,$mode,$form) = @_;
     my $rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,      my $rendered;
       $ENV{'request.course.id'});      my %form = ((ref($form) eq 'HASH')? %{$form} : ());
       &Apache::lonxml::remember_problem_counter();
       if ($mode eq 'both' or $mode eq 'text') {
    $rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,
          $env{'request.course.id'},
          undef,\%form);
       }
     if ($removeform) {      if ($removeform) {
  $rendered=~s|<form(.*?)>||g;   $rendered=~s|<form(.*?)>||g;
  $rendered=~s|</form>||g;   $rendered=~s|</form>||g;
  $rendered=~s|name="submit"|name="would_have_been_submit"|g;   $rendered=~s|(<input[^>]*name\s*=\s*"?)(\w+)("?)|$1would_have_been_$2$3|g;
       }
       my $companswer;
       if ($mode eq 'both' or $mode eq 'answer') {
    &Apache::lonxml::restore_problem_counter();
    $companswer=
       &Apache::loncommon::get_student_answers($symb,$uname,$udom,
       $env{'request.course.id'},
       %form);
     }      }
     my $companswer=&Apache::loncommon::get_student_answers($symb,$uname,$udom,  
    $ENV{'request.course.id'});  
     if ($removeform) {      if ($removeform) {
  $companswer=~s|<form(.*?)>||g;   $companswer=~s|<form(.*?)>||g;
  $companswer=~s|</form>||g;   $companswer=~s|</form>||g;
  $rendered=~s|name="submit"|name="would_have_been_submit"|g;   $companswer=~s|name="submit"|name="would_have_been_submit"|g;
     }      }
     my $result.='<table border="0" width="100%"><tr><td bgcolor="#777777">';      my $renderheading = &mt('View of the problem');
     $result.='<table border="0" width="100%"><tr><td bgcolor="#e6ffff">';      my $answerheading = &mt('Correct answer');
     $result.='<b> View of the problem - '.$ENV{'form.fullname'}.      if (($uname ne $env{'user.name'}) || ($udom ne $env{'user.domain'})) {
  '</b></td></tr><tr><td bgcolor="#ffffff">'.$rendered.'<br />';          my $stu_fullname = $env{'form.fullname'};
     $result.='<b>Correct answer:</b><br />'.$companswer;          if ($stu_fullname eq '') {
     $result.='</td></tr></table>';              $stu_fullname = &Apache::loncommon::plainname($uname,$udom,'lastname');
     $result.='</td></tr></table><br />';          }
     $request->print($result);          my $forwhom = &nameUserString(undef,$stu_fullname,$uname,$udom);
           if ($forwhom ne '') {
               $renderheading = &mt('View of the problem for[_1]',$forwhom);
               $answerheading = &mt('Correct answer for[_1]',$forwhom);
           }
       }
       $rendered=
           '<div class="LC_Box">'
          .'<h3 class="LC_hcell">'.$renderheading.'</h3>'
          .$rendered
          .'</div>';
       $companswer=
           '<div class="LC_Box">'
          .'<h3 class="LC_hcell">'.$answerheading.'</h3>'
          .$companswer
          .'</div>';
       my $result;
       if ($mode eq 'both') {
           $result=$rendered.$companswer;
       } elsif ($mode eq 'text') {
           $result=$rendered;
       } elsif ($mode eq 'answer') {
           $result=$companswer;
       }
       return $result;
   }
   
   sub files_exist {
       my ($r, $symb) = @_;
       my @students = &Apache::loncommon::get_env_multiple('form.stuinfo');
       foreach my $student (@students) {
           my ($uname,$udom,$fullname) = split(/:/,$student);
           my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},
         $udom,$uname);
           my ($string,$timestamp)= &get_last_submission(\%record);
           foreach my $submission (@$string) {
               my ($partid,$respid) =
    ($submission =~ /^resource\.([^\.]*)\.([^\.]*)\.submission/);
               my $files=&get_submitted_files($udom,$uname,$partid,$respid,
      \%record);
               return 1 if (@$files);
           }
       }
       return 0;
   }
   
   sub download_all_link {
       my ($r,$symb) = @_;
       unless (&files_exist($r, $symb)) {
           $r->print(&mt('There are currently no submitted documents.'));
           return;
       }
       my $all_students = 
    join("\n", &Apache::loncommon::get_env_multiple('form.stuinfo'));
   
       my $parts =
    join("\n",&Apache::loncommon::get_env_multiple('form.vPart'));
   
       my $identifier = &Apache::loncommon::get_cgi_id();
       &Apache::lonnet::appenv({'cgi.'.$identifier.'.students' => $all_students,
                                'cgi.'.$identifier.'.symb' => $symb,
                                'cgi.'.$identifier.'.parts' => $parts,});
       $r->print('<a href="/cgi-bin/multidownload.pl?'.$identifier.'">'.
         &mt('Download All Submitted Documents').'</a>');
       return;
   }
   
   sub submit_download_link {
       my ($request,$symb) = @_;
       if (!$symb) { return ''; }
       my $res_error;
       my ($partlist,$handgrade,$responseType,$numresp,$numessay,$numdropbox) =
           &response_type($symb,\$res_error);
       if ($res_error) {
           $request->print(&mt('An error occurred retrieving response types'));
           return;
       }
       unless ($numessay) {
           $request->print(&mt('No essayresponse items found'));
           return;
       }
       my @chosenparts = &Apache::loncommon::get_env_multiple('form.vPart');
       if (@chosenparts) {
           $request->print(&showResourceInfo($symb,$partlist,$responseType,
                                             undef,undef,1));
       }
       if ($numessay) {
           my $submitonly= $env{'form.submitonly'} eq '' ? 'all' : $env{'form.submitonly'};
           my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
           my $getgroup  = $env{'form.group'} eq '' ? 'all' : $env{'form.group'};
           (undef,undef,my $fullname) = &getclasslist($getsec,1,$getgroup,$symb,$submitonly,1);
           if (ref($fullname) eq 'HASH') {
               my @students = map { $_.':'.$fullname->{$_} } (keys(%{$fullname}));
               if (@students) {
                   @{$env{'form.stuinfo'}} = @students;
                   if ($numdropbox) {
                       &download_all_link($request,$symb);
                   } else {
                       $request->print(&mt('No essayrespose items with dropbox found'));
                   }
   # FIXME Need a mechanism to download essays, i.e., if $numessay > $numdropbox
   # Needs to omit user's identity if resource instance is for an anonymous survey.
               } else {
                   $request->print(&mt('No students match the criteria you selected'));
               }
           } else {
               $request->print(&mt('Could not retrieve student information'));
           }
       } else {
           $request->print(&mt('No essayresponse items found'));
       }
       return;
   }
   
   sub build_section_inputs {
       my $section_inputs;
       if ($env{'form.section'} eq '') {
           $section_inputs .= '<input type="hidden" name="section" value="all" />'."\n";
       } else {
           my @sections = &Apache::loncommon::get_env_multiple('form.section');
           foreach my $section (@sections) {
               $section_inputs .= '<input type="hidden" name="section" value="'.$section.'" />'."\n";
           }
       }
       return $section_inputs;
 }  }
   
 # --------------------------- show submissions of a student, option to grade   # --------------------------- show submissions of a student, option to grade 
 sub submission {  sub submission {
     my ($request,$counter,$total) = @_;      my ($request,$counter,$total,$symb,$divforres,$calledby) = @_;
       my ($uname,$udom)     = ($env{'form.student'},$env{'form.userdom'});
       $udom = ($udom eq '' ? $env{'user.domain'} : $udom); #has form.userdom changed for a student?
       my $usec = &Apache::lonnet::getsection($udom,$uname,$env{'request.course.id'});
       $env{'form.fullname'} = &Apache::loncommon::plainname($uname,$udom,'lastname') if $env{'form.fullname'} eq '';
   
       if ($symb eq '') { $request->print("Unable to handle ambiguous references:."); return ''; }
       my $probtitle=&Apache::lonnet::gettitle($symb);
       my $is_tool = ($symb =~ /ext\.tool$/);
       my ($essayurl,%coursedesc_by_cid);
   
       if (!&canview($usec)) {
           $request->print(
               '<span class="LC_warning">'.
               &mt('Unable to view requested student.').
               ' '.&mt('([_1] in section [_2] in course id [_3])',
                           $uname.':'.$udom,$usec,$env{'request.course.id'}).
               '</span>');
    return;
       }
   
     (my $url=$ENV{'form.url'})=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;      my $res_error;
 #    if ($ENV{'form.student'} eq '') { &moreinfo($request,'Need student login id'); return ''; }      my ($partlist,$handgrade,$responseType,$numresp,$numessay) =
     my ($uname,$udom)     = ($ENV{'form.student'},$ENV{'form.userdom'});          &response_type($symb,\$res_error);
     ($uname,$udom)        = &finduser($uname) if $udom eq '';      if ($res_error) {
     $ENV{'form.fullname'} = &get_fullname ($uname,$udom) if $ENV{'form.fullname'} eq '';          $request->print(&navmap_errormsg());
 #    if ($uname eq '') { &moreinfo($request,'Unable to find student'); return ''; }          return;
       }
     my $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url)));  
     if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }      if (!$env{'form.lastSub'}) { $env{'form.lastSub'} = 'datesub'; }
     my $last = ($ENV{'form.lastSub'} eq 'last' ? 'last' : '');      unless ($is_tool) { 
 #    $ENV{'form.vProb'} = $ENV{'form.vProb'} ne '' ? $ENV{'form.vProb'} : 'yes';          if (!$env{'form.vProb'}) { $env{'form.vProb'} = 'yes'; }
           if (!$env{'form.vAns'}) { $env{'form.vAns'} = 'yes'; }
       }
       if (($numessay) && ($calledby eq 'submission') && (!exists($env{'form.compmsg'}))) {
           $env{'form.compmsg'} = 1;
       }
       my $last = ($env{'form.lastSub'} eq 'last' ? 'last' : '');
       my $checkIcon = '<img alt="'.&mt('Check Mark').
    '" src="'.$request->dir_config('lonIconsURL').
    '/check.gif" height="16" border="0" />';
   
     # header info      # header info
     if ($counter == 0) {      if ($counter == 0) {
           my @chosenparts = &Apache::loncommon::get_env_multiple('form.vPart');
           if (@chosenparts) {
               $request->print(&showResourceInfo($symb,$partlist,$responseType,'gradesub'));
           } elsif ($divforres) {
               $request->print('<div style="padding:0;clear:both;margin:0;border:0"></div>');
           } else {
               $request->print('<br clear="all" />');
           }
  &sub_page_js($request);   &sub_page_js($request);
  $request->print('<h3>&nbsp;<font color="#339933">Submission Record</font></h3>'."\n".          &sub_grademessage_js($request) if ($env{'form.compmsg'});
  '<font size=+1>&nbsp;<b>Resource: </b>'.$url.'</font>'."\n");   &sub_page_kw_js($request) if ($numessay);
   
  # option to display problem, only once else it cause problems    # option to display problem, only once else it cause problems 
         # with the form later since the problem has a form.          # with the form later since the problem has a form.
  if ($ENV{'form.vProb'} eq 'yes') {   if ($env{'form.vProb'} eq 'yes' or $env{'form.vAns'} eq 'yes') {
     &show_problem($request,$symb,$uname,$udom,0);      my $mode;
       if ($env{'form.vProb'} eq 'yes' && $env{'form.vAns'} eq 'yes') {
    $mode='both';
       } elsif ($env{'form.vProb'} eq 'yes') {
    $mode='text';
       } elsif ($env{'form.vAns'} eq 'yes') {
    $mode='answer';
       }
       &Apache::lonxml::clear_problem_counter();
       $request->print(&show_problem($request,$symb,$uname,$udom,0,1,$mode));
  }   }
   
  # kwclr is the only variable that is guaranteed to be non blank   
         # if this subroutine has been called once.  
  my %keyhash = ();   my %keyhash = ();
  if ($ENV{'form.kwclr'} eq '') {   if (($env{'form.kwclr'} eq '' && $numessay) || ($env{'form.compmsg'})) {
     %keyhash = &Apache::lonnet::dump('nohist_handgrade',      %keyhash = &Apache::lonnet::dump('nohist_handgrade',
      $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},       $env{'course.'.$env{'request.course.id'}.'.domain'},
      $ENV{'course.'.$ENV{'request.course.id'}.'.num'});       $env{'course.'.$env{'request.course.id'}.'.num'});
   
     my $loginuser = $ENV{'user.name'}.':'.$ENV{'user.domain'};  
     $ENV{'form.keywords'} = $keyhash{$symb.'_keywords'} ne '' ? $keyhash{$symb.'_keywords'} : '';  
     $ENV{'form.kwclr'}    = $keyhash{$loginuser.'_kwclr'} ne '' ? $keyhash{$loginuser.'_kwclr'} : 'red';  
     $ENV{'form.kwsize'}   = $keyhash{$loginuser.'_kwsize'} ne '' ? $keyhash{$loginuser.'_kwsize'} : '0';  
     $ENV{'form.kwstyle'}  = $keyhash{$loginuser.'_kwstyle'} ne '' ? $keyhash{$loginuser.'_kwstyle'} : '';  
     $ENV{'form.msgsub'}   = $keyhash{$symb.'_subject'} ne '' ?   
  $keyhash{$symb.'_subject'} : &Apache::lonnet::metadata($url,'title');  
     $ENV{'form.savemsgN'} = $keyhash{$symb.'_savemsgN'} ne '' ? $keyhash{$symb.'_savemsgN'} : '0';  
   
  }   }
    # kwclr is the only variable that is guaranteed not to be blank
  $request->print('<form action="/adm/grades" method="post" name="SCORE">'."\n".   # if this subroutine has been called once.
    if ($env{'form.kwclr'} eq '' && $numessay) {
       my $loginuser = $env{'user.name'}.':'.$env{'user.domain'};
       $env{'form.keywords'} = $keyhash{$symb.'_keywords'} ne '' ? $keyhash{$symb.'_keywords'} : '';
       $env{'form.kwclr'}    = $keyhash{$loginuser.'_kwclr'} ne '' ? $keyhash{$loginuser.'_kwclr'} : 'red';
       $env{'form.kwsize'}   = $keyhash{$loginuser.'_kwsize'} ne '' ? $keyhash{$loginuser.'_kwsize'} : '0';
       $env{'form.kwstyle'}  = $keyhash{$loginuser.'_kwstyle'} ne '' ? $keyhash{$loginuser.'_kwstyle'} : '';
    }
    if ($env{'form.compmsg'}) {
       $env{'form.msgsub'}   = $keyhash{$symb.'_subject'} ne '' ?
    $keyhash{$symb.'_subject'} : $probtitle;
       $env{'form.savemsgN'} = $keyhash{$symb.'_savemsgN'} ne '' ? $keyhash{$symb.'_savemsgN'} : '0';
    }
   
    my $overRideScore = $env{'form.overRideScore'} eq '' ? 'no' : $env{'form.overRideScore'};
    my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
    $request->print('<form action="/adm/grades" method="post" name="SCORE" enctype="multipart/form-data">'."\n".
  '<input type="hidden" name="command"    value="handgrade" />'."\n".   '<input type="hidden" name="command"    value="handgrade" />'."\n".
    '<input type="hidden" name="Status"     value="'.$stu_status.'" />'."\n".
    '<input type="hidden" name="overRideScore" value="'.$overRideScore.'" />'."\n".
  '<input type="hidden" name="refresh"    value="off" />'."\n".   '<input type="hidden" name="refresh"    value="off" />'."\n".
  '<input type="hidden" name="symb"       value="'.$symb.'" />'."\n".   '<input type="hidden" name="studentNo"  value="" />'."\n".
  '<input type="hidden" name="url"        value="'.$url.'" />'."\n".   '<input type="hidden" name="gradeOpt"   value="" />'."\n".
  '<input type="hidden" name="showgrading" value="'.$ENV{'form.showgrading'}.'" />'."\n".   '<input type="hidden" name="symb"       value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
  '<input type="hidden" name="vProb"      value="'.$ENV{'form.vProb'}.'" />'."\n".   '<input type="hidden" name="vProb"      value="'.$env{'form.vProb'}.'" />'."\n".
  '<input type="hidden" name="lastSub"    value="'.$ENV{'form.lastSub'}.'" />'."\n".   '<input type="hidden" name="vAns"       value="'.$env{'form.vAns'}.'" />'."\n".
  '<input type="hidden" name="section"    value="'.$ENV{'form.section'}.'">'."\n".   '<input type="hidden" name="lastSub"    value="'.$env{'form.lastSub'}.'" />'."\n".
  '<input type="hidden" name="submitonly" value="'.$ENV{'form.submitonly'}.'">'."\n".   '<input type="hidden" name="compmsg"    value="'.$env{'form.compmsg'}.'" />'."\n".
  '<input type="hidden" name="response"   value="'.$ENV{'form.response'}.'">'."\n".   &build_section_inputs().
  '<input type="hidden" name="handgrade"  value="'.$ENV{'form.handgrade'}.'">'."\n".   '<input type="hidden" name="submitonly" value="'.$env{'form.submitonly'}.'" />'."\n".
  '<input type="hidden" name="keywords"   value="'.$ENV{'form.keywords'}.'" />'."\n".  
  '<input type="hidden" name="kwclr"      value="'.$ENV{'form.kwclr'}.'" />'."\n".  
  '<input type="hidden" name="kwsize"     value="'.$ENV{'form.kwsize'}.'" />'."\n".  
  '<input type="hidden" name="kwstyle"    value="'.$ENV{'form.kwstyle'}.'" />'."\n".  
  '<input type="hidden" name="msgsub"     value="'.$ENV{'form.msgsub'}.'" />'."\n".  
  '<input type="hidden" name="savemsgN"   value="'.$ENV{'form.savemsgN'}.'" />'."\n".  
  '<input type="hidden" name="NCT"'.   '<input type="hidden" name="NCT"'.
  ' value="'.($ENV{'form.NTSTU'} ne '' ? $ENV{'form.NTSTU'} : $total+1).'" />'."\n");   ' value="'.($env{'form.NTSTU'} ne '' ? $env{'form.NTSTU'} : $total+1).'" />'."\n");
    if ($env{'form.compmsg'}) {
       $request->print('<input type="hidden" name="msgsub"   value="'.$env{'form.msgsub'}.'" />'."\n".
       '<input type="hidden" name="shownSub" value="0" />'."\n".
       '<input type="hidden" name="savemsgN" value="'.$env{'form.savemsgN'}.'" />'."\n");
    }
    if ($numessay) {
       $request->print('<input type="hidden" name="keywords" value="'.$env{'form.keywords'}.'" />'."\n".
       '<input type="hidden" name="kwclr"    value="'.$env{'form.kwclr'}.'" />'."\n".
       '<input type="hidden" name="kwsize"   value="'.$env{'form.kwsize'}.'" />'."\n".
       '<input type="hidden" name="kwstyle"  value="'.$env{'form.kwstyle'}.'" />'."\n");
    }
   
  my ($cts,$prnmsg) = (1,'');   my ($cts,$prnmsg) = (1,'');
  while ($cts <= $ENV{'form.savemsgN'}) {   while ($cts <= $env{'form.savemsgN'}) {
     $prnmsg.='<input type="hidden" name="savemsg'.$cts.'" value="'.      $prnmsg.='<input type="hidden" name="savemsg'.$cts.'" value="'.
  ($keyhash{$symb.'_savemsg'.$cts} eq '' ? $ENV{'form.savemsg'.$cts} : $keyhash{$symb.'_savemsg'.$cts}).   (!exists($keyhash{$symb.'_savemsg'.$cts}) ? 
  '" />'."\n";   &Apache::lonfeedback::clear_out_html($env{'form.savemsg'.$cts}) :
    &Apache::lonfeedback::clear_out_html($keyhash{$symb.'_savemsg'.$cts})).
    '" />'."\n".
    '<input type="hidden" name="shownOnce'.$cts.'" value="0" />'."\n";
     $cts++;      $cts++;
  }   }
  $request->print($prnmsg);   $request->print($prnmsg);
   
  if ($ENV{'form.handgrade'} eq 'yes' && $ENV{'form.showgrading'} eq 'yes') {   if ($numessay) {
     $request->print(<<KEYWORDS);  
 &nbsp;<b>Keyword Options:</b>&nbsp;              my %lt = &Apache::lonlocal::texthash(
 <a href="javascript:keywords(document.SCORE.keywords)"; TARGET=_self>List</a>&nbsp; &nbsp;                            keyh => 'Keyword Highlighting for Essays',
 <a href="#" onMouseDown="javascript:getSel(); return false"                            keyw => 'Keyword Options',
  CLASS="page">Paste Selection to List</a>&nbsp; &nbsp;                            list => 'List',
 <a href="javascript:kwhighlight()"; TARGET=_self>Highlight Attribute</a><br /><br />                            past => 'Paste Selection to List',
 KEYWORDS                            high => 'Highlight Attribute',
                        );
   #
   # Print out the keyword options line
   #
       $request->print(
                   '<div class="LC_columnSection">'
                  .'<fieldset><legend>'.$lt{'keyh'}.'</legend>'
                  .&Apache::lonhtmlcommon::funclist_from_array(
                       ['<a href="javascript:keywords(document.SCORE);" target="_self">'.$lt{'list'}.'</a>',
                        '<a href="#" onmousedown="javascript:getSel(); return false"
    class="page">'.$lt{'past'}.'</a>',
                        '<a href="javascript:kwhighlight();" target="_self">'.$lt{'high'}.'</a>'],
                       {legend => $lt{'keyw'}})
                  .'</fieldset></div>'
               );
   
   #
   # Load the other essays for similarity check
   #
               (undef,undef,$essayurl) = &Apache::lonnet::decode_symb($symb);
               if ($essayurl eq 'lib/templates/simpleproblem.problem') {
                   my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
                   my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
                   if ($cdom ne '' && $cnum ne '') {
                       my ($map,$id,$res) = &Apache::lonnet::decode_symb($symb);
                       if ($map =~ m{^\Quploaded/$cdom/$cnum/\E(default(?:|_\d+)\.(?:sequence|page))$}) {
                           my $apath = $1.'_'.$id;
                           $apath=~s/\W/\_/gs;
                           &init_old_essays($symb,$apath,$cdom,$cnum);
                       }
                   }
               } else {
           my ($adom,$aname,$apath)=($essayurl=~/^($LONCAPA::domain_re)\/($LONCAPA::username_re)\/(.*)$/);
           $apath=&escape($apath);
           $apath=~s/\W/\_/gs;
                   &init_old_essays($symb,$apath,$adom,$aname);
               }
         }          }
     }      }
   
     if ($ENV{'form.vProb'} eq 'all') {  # This is where output for one specific student would start
  $request->print('<br /><br /><br />');      my $add_class = ($counter%2) ? ' LC_grade_show_user_odd_row' : '';
  &show_problem($request,$symb,$uname,$udom,1);      $request->print(
           "\n\n"
          .'<div class="LC_grade_show_user'.$add_class.'">'
          .'<h2>'.&nameUserString(undef,$env{'form.fullname'},$uname,$udom).'</h2>'
          ."\n"
       );
   
       # Show additional functions if allowed
       if ($perm{'vgr'}) {
           $request->print(
               &Apache::loncommon::track_student_link(
                   'View recent activity',
                   $uname,$udom,'check')
              .' '
           );
       }
       if ($perm{'opa'}) {
           $request->print(
               &Apache::loncommon::pprmlink(
                   &mt('Set/Change parameters'),
                   $uname,$udom,$symb,'check'));
       }
   
       # Show Problem
       if ($env{'form.vProb'} eq 'all' or $env{'form.vAns'} eq 'all') {
    my $mode;
    if ($env{'form.vProb'} eq 'all' && $env{'form.vAns'} eq 'all') {
       $mode='both';
    } elsif ($env{'form.vProb'} eq 'all' ) {
       $mode='text';
    } elsif ($env{'form.vAns'} eq 'all') {
       $mode='answer';
    }
    &Apache::lonxml::clear_problem_counter();
    $request->print(&show_problem($request,$symb,$uname,$udom,1,1,$mode,{'request.prefix' => 'ctr'.$counter}));
     }      }
   
     my %record = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);      my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},$udom,$uname);
     my ($partlist,$handgrade) = &response_type($url);  
   
     # Display student info      # Display student info
     $request->print(($counter == 0 ? '' : '<br />'));      $request->print(($counter == 0 ? '' : '<br />'));
     my $result='<table border="0" width=100%><tr><td bgcolor="#777777">'."\n".  
  '<table border="0" width=100%><tr bgcolor="#edffff"><td>'."\n";  
   
     $result.='<b>Fullname: </b>'.$ENV{'form.fullname'}.      my $boxtitle = &mt('Submissions');
  '<font color="#999999">&nbsp; &nbsp;Username: '.$uname.'</font>'.      if ($is_tool) {
  '<font color="#999999">&nbsp; &nbsp;Domain: '.$udom.'</font><br />'."\n";          $boxtitle = &mt('Transactions')
       }
       my $result='<div class="LC_Box">'
                 .'<h3 class="LC_hcell">'.$boxtitle.'</h3>';
     $result.='<input type="hidden" name="name'.$counter.      $result.='<input type="hidden" name="name'.$counter.
  '" value="'.$ENV{'form.fullname'}.'" />'."\n";               '" value="'.$env{'form.fullname'}.'" />'."\n";
       if (($numresp > $numessay) && !$is_tool) {
           $result.='<p class="LC_info">'
                   .&mt('Part(s) graded correct by the computer is marked with a [_1] symbol.',$checkIcon)
                   ."</p>\n";
       }
   
     # If this is handgraded, then check for collaborators      # If any part of the problem is an essayresponse, then check for collaborators
     my @col_fullnames;      my $fullname;
     my ($classlist,$fullname);      my $col_fullnames = [];
     if ($ENV{'form.handgrade'} eq 'yes') {      if ($numessay) {
  my @col_list;   (my $sub_result,$fullname,$col_fullnames)=
  ($classlist,undef,$fullname) = &getclasslist('all','0');      &check_collaborators($symb,$uname,$udom,\%record,$handgrade,
  for (keys (%$handgrade)) {   $counter);
     my $ncol = &Apache::lonnet::EXT('resource.'.$_.   $result.=$sub_result;
     '.maxcollaborators',  
                                             $symb,$udom,$uname);  
     next if ($ncol <= 0);  
             s/\_/\./g;  
             next if ($record{'resource.'.$_.'.collaborators'} eq '');  
             my (@collaborators) = split(/,?\s+/,  
                                    $record{'resource.'.$_.'.collaborators'});  
             my (@badcollaborators);  
             if (scalar(@collaborators) != 0) {  
                 $result.='<b>Collaborators: </b>';  
                 foreach my $collaborator (@collaborators) {  
                     my ($co_name,$co_dom) = split /\@|:/,$collaborator;  
                     $co_dom = $udom if (! defined($co_dom));  
                     next if ($co_name eq $uname && $co_dom eq $udom);  
                     # Doing this grep allows 'fuzzy' specification  
                     my @Matches = grep /^$co_name:$co_dom/i,  
                     keys %$classlist;  
                     if (! scalar(@Matches)) {  
                         push @badcollaborators,$collaborator;  
                         next;  
                     }  
                     push @col_list, @Matches;  
                     foreach (@Matches) {  
                         my ($lastname,$givenn) = split(/,/,$$fullname{$_});  
                         push @col_fullnames, $givenn.' '.$lastname;  
                         $result.=$$fullname{$_}.'&nbsp; &nbsp; &nbsp;';  
                     }  
                 }  
                 $result.='<br />'."\n";  
                 if (scalar(@badcollaborators) > 0) {  
                     $result.='<table border="0"><tr bgcolor="#ffbbbb"><td>';  
                     $result.='This student has submitted ';  
                     if (scalar(@badcollaborators) == 1) {  
                         $result .= 'an invalid collaborator';  
                     } else {  
                         $result .= 'invalid collaborators';  
                     }  
                     $result .= ': '.join(', ',@badcollaborators);  
                       
                 }  
                 if (scalar(@collaborators > $ncol)) {  
                     $result .= '<table border="0"><tr bgcolor="#ffbbbb"><td>';  
                     $result .= 'This student has sumbitted too many '.  
                         'collaborators.  Maximum is '.$ncol;  
                     $result .= '</td></tr></table>';  
                 }  
                 $result.='<input type="hidden" name="collaborator'.$counter.  
                     '" value="'.(join ':',@col_list).'" />'."\n";  
             }  
  }  
     }      }
     $request->print($result."\n");      $request->print($result."\n");
   
     # print student answer/submission      # print student answer/submission
     # Options are (1) Handgaded submission only      # Options are (1) Last submission only
     #             (2) Last submission, includes submission that is not handgraded       #             (2) Last submission (with detailed information for that submission)
     #                  (for multi-response type part)      #             (3) All transactions (by date)
     #             (3) Last submission plus the parts info      #             (4) The whole record (with detailed information for all transactions)
     #             (4) The whole record for this student  
     if ($ENV{'form.lastSub'} =~ /^(lastonly|hdgrade)$/) {      my ($string,$timestamp)= &get_last_submission(\%record,$is_tool);
  if ($ENV{'form.'.$uname.':'.$udom.':submitted_by'}) {  
     my $submitby=''.      my $lastsubonly;
  '<b>Collaborative submission by: </b>'.  
  '<a href="javascript:viewSubmitter(\''.      if ($$timestamp eq '') {
  $ENV{'form.'.$uname.':'.$udom.':submitted_by'}.          $lastsubonly.='<div class="LC_grade_submissions_body">'.$$string[0].'</div>'; 
  '\')"; TARGET=_self>'.      } elsif ($is_tool) {
  $$fullname{$ENV{'form.'.$uname.':'.$udom.':submitted_by'}}.'</a>';          $lastsubonly =
     $request->print($submitby);              '<div class="LC_grade_submissions_body">'
  } else {             .'<b>'.&mt('Date Grade Passed Back:').'</b> '.$$timestamp."</div>\n";
     my ($string,$timestamp)=      } else {
  &get_last_submission (%record);          $lastsubonly =
     my $lastsubonly.=''.              '<div class="LC_grade_submissions_body">'
  ($$timestamp eq '' ? '' : '<b>Date Submitted:</b> '.             .'<b>'.&mt('Date Submitted:').'</b> '.$$timestamp."\n";
  $$timestamp).'';  
     if ($$timestamp eq '') {   my %seenparts;
  $lastsubonly.='<tr><td bgcolor="#ffffe6">'.$$string[0].'</td></tr>'."\n";   my @part_response_id = &flatten_responseType($responseType);
     } else {   foreach my $part (@part_response_id) {
  for my $part (sort keys(%$handgrade)) {      my ($partid,$respid) = @{ $part };
     foreach (@$string) {      my $display_part=&get_display_part($partid,$symb);
  my ($partid,$respid) = /^resource\.(\d+)\.(\d+)\.submission/;      if ($env{"form.$uname:$udom:$partid:submitted_by"}) {
  if ($part eq ($partid.'_'.$respid)) {   if (exists($seenparts{$partid})) { next; }
     my ($ressub,$subval) = split(/:/,$_,2);   $seenparts{$partid}=1;
     $lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part '.                  $request->print(
  $partid.'</b> <font color="#999999">( ID '.$respid.                      '<b>'.&mt('Part: [_1]',$display_part).'</b>'.
  ' )</font>&nbsp; &nbsp;<b>Answer: </b>'.                      ' <b>'.&mt('Collaborative submission by: [_1]',
  &keywords_highlight($subval).'</td></tr>'."\n"                                 '<a href="javascript:viewSubmitter(\''.
  if ($ENV{'form.lastSub'} eq 'lastonly' ||                                  $env{"form.$uname:$udom:$partid:submitted_by"}.
     ($ENV{'form.lastSub'} eq 'hdgrade' &&                                  '\');" target="_self">'.
      $$handgrade{$part} =~ /:yes$/));                                 $$fullname{$env{"form.$uname:$udom:$partid:submitted_by"}}.'</a>').
  }                      '<br />');
     }   next;
  }  
     }      }
     $lastsubonly.='</td></tr>'."\n";      my $responsetype = $responseType->{$partid}->{$respid};
     $request->print($lastsubonly);      if (!exists($record{"resource.$partid.$respid.submission"})) {
                   $lastsubonly.="\n".'<div class="LC_grade_submission_part">'.
                       '<b>'.&mt('Part: [_1]',$display_part).'</b>'.
                       ' <span class="LC_internal_info">'.
                       '('.&mt('Response ID: [_1]',$respid).')'.
                       '</span>&nbsp; &nbsp;'.
             '<span class="LC_warning">'.&mt('Nothing submitted - no attempts.').'</span><br /><br /></div>';
    next;
       }
       foreach my $submission (@$string) {
    my ($partid,$respid) = ($submission =~ /^resource\.([^\.]*)\.([^\.]*)\.submission/);
    if (join('_',@{$part}) ne ($partid.'_'.$respid)) { next; }
    my ($ressub,$hide,$draft,$subval) = split(/:/,$submission,4);
    # Similarity check
                   my $similar='';
                   my ($type,$trial,$rndseed);
                   if ($hide eq 'rand') {
                       $type = 'randomizetry';
                       $trial = $record{"resource.$partid.tries"};
                       $rndseed = $record{"resource.$partid.rndseed"};
                   }
           if ($env{'form.checkPlag'}) {
       my ($oname,$odom,$ocrsid,$oessay,$osim)=
       &most_similar($uname,$udom,$symb,$subval);
       if ($osim) {
    $osim=int($osim*100.0);
                           if ($hide eq 'anon') {
                               $similar='<hr /><span class="LC_warning">'.&mt("Essay was found to be similar to another essay submitted for this assignment.").'<br />'.
                                        &mt('As the current submission is for an anonymous survey, no other details are available.').'</span><hr />';
                           } else {
       $similar='<hr />';
                               if ($essayurl eq 'lib/templates/simpleproblem.problem') {
                                   $similar .= '<h3><span class="LC_warning">'.
                                               &mt('Essay is [_1]% similar to an essay by [_2]',
                                                   $osim,
                                                   &Apache::loncommon::plainname($oname,$odom).' ('.$oname.':'.$odom.')').
                                               '</span></h3>';
                               } else {
                                   my %old_course_desc;
                                   if ($ocrsid ne '') {
                                       if (ref($coursedesc_by_cid{$ocrsid}) eq 'HASH') {
                                           %old_course_desc = %{$coursedesc_by_cid{$ocrsid}};
                                       } else {
                                           my $args;
                                           if ($ocrsid ne $env{'request.course.id'}) {
                                               $args = {'one_time' => 1};
                                           }
                                           %old_course_desc =
                                               &Apache::lonnet::coursedescription($ocrsid,$args);
                                           $coursedesc_by_cid{$ocrsid} = \%old_course_desc;
                                       }
                                       $similar .=
                                           '<h3><span class="LC_warning">'.
                                           &mt('Essay is [_1]% similar to an essay by [_2] in course [_3] (course id [_4]:[_5])',
                                               $osim,
                                               &Apache::loncommon::plainname($oname,$odom).' ('.$oname.':'.$odom.')',
                                               $old_course_desc{'description'},
                                               $old_course_desc{'num'},
                                               $old_course_desc{'domain'}).
                                           '</span></h3>';
                                   } else {
                                       $similar .=
                                           '<h3><span class="LC_warning">'.
                                           &mt('Essay is [_1]% similar to an essay by [_2] in an unknown course',
                                               $osim,
                                               &Apache::loncommon::plainname($oname,$odom).' ('.$oname.':'.$odom.')').
                                           '</span></h3>';
                                   }
                               }
                               $similar .= '<blockquote><i>'.
                                           &keywords_highlight($oessay).
                                           '</i></blockquote><hr />';
                           }
               }
    }
    my $order=&get_order($partid,$respid,$symb,$uname,$udom,
                                        undef,$type,$trial,$rndseed);
                   if (($env{'form.lastSub'} eq 'lastonly') ||
                       ($env{'form.lastSub'} eq 'datesub')  ||
                       ($env{'form.lastSub'} =~ /^(last|all)$/)) {
       my $display_part=&get_display_part($partid,$symb);
                       $lastsubonly.='<div class="LC_grade_submission_part">'.
                           '<b>'.&mt('Part: [_1]',$display_part).'</b>'.
                           ' <span class="LC_internal_info">'.
                           '('.&mt('Response ID: [_1]',$respid).')'.
                           '</span>&nbsp; &nbsp;';
       my $files=&get_submitted_files($udom,$uname,$partid,$respid,\%record);
       if (@$files) {
                           if ($hide eq 'anon') {
                               $lastsubonly.='<br />'.&mt('[quant,_1,file] uploaded to this anonymous survey',scalar(@{$files}));
                           } else {
                               $lastsubonly.='<br /><br />'.'<b>'.&mt('Submitted Files:').'</b>'
                                           .'<br /><span class="LC_warning">';
                               if(@$files == 1) {
                                   $lastsubonly .= &mt('Like all files provided by users, this file may contain viruses!');
                               } else {
                                   $lastsubonly .= &mt('Like all files provided by users, these files may contain viruses!');
                               }
                               $lastsubonly .= '</span>';
                               foreach my $file (@$files) {
                                   &Apache::lonnet::allowuploaded('/adm/grades',$file);
                                   $lastsubonly.='<br /><a href="'.$file.'?rawmode=1" target="lonGRDs"><img src="'.&Apache::loncommon::icon($file).'" border="0" alt="" /> '.$file.'</a>';
                               }
                           }
    $lastsubonly.='<br />';
                       }
                       if ($hide eq 'anon') {
                           $lastsubonly.='<br /><b>'.&mt('Anonymous Survey').'</b>'; 
                       } else {
                           $lastsubonly.='<br /><b>'.&mt('Submitted Answer:').' </b>';
                           if ($draft) {
                               $lastsubonly.= ' <span class="LC_warning">'.&mt('Draft Copy').'</span>';
                           }
                           $subval =
       &cleanRecord($subval,$responsetype,$symb,$partid,
    $respid,\%record,$order,undef,$uname,$udom,$type,$trial,$rndseed);
                           if ($responsetype eq 'essay') {
                               $subval =~ s{\n}{<br />}g;
                           }
                           $lastsubonly.=$subval."\n";
                       }
                       if ($similar) {$lastsubonly.="<br /><br />$similar\n";}
       $lastsubonly.='</div>';
    }
               }
  }   }
     } else {   $lastsubonly.='</div>'."\n"; # End: LC_grade_submissions_body
  $request->print(&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,      }
  $ENV{'request.course.id'},      $request->print($lastsubonly);
       if ($env{'form.lastSub'} eq 'datesub') {
           my ($parts,$handgrade,$responseType) = &response_type($symb,\$res_error);
    $request->print(&displaySubByDates($symb,\%record,$parts,$responseType,$checkIcon,$uname,$udom));
       }
       if ($env{'form.lastSub'} =~ /^(last|all)$/) {
           my $identifier = (&canmodify($usec)? $counter : '');
           $request->print(&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,
    $env{'request.course.id'},
  $last,'.submission',   $last,'.submission',
  'Apache::grades::keywords_highlight'));   'Apache::grades::keywords_highlight',
                                                                    $usec,$identifier));
     }      }
           $request->print('<input type="hidden" name="unamedom'.$counter.'" value="'.$uname.':'
    .$udom.'" />'."\n");
     # return if view submission with no grading option      # return if view submission with no grading option
     if ($ENV{'form.showgrading'} eq '') {      if (!&canmodify($usec)) {
  $request->print('</td></tr></table></td></tr></table></form>'."\n");   $request->print('<p><span class="LC_warning">'.&mt('No grading privileges').'</span></p></div>');
  return;   return;
       } else {
    $request->print('</div>'."\n");
     }      }
   
     # Grading options      # grading message center
     $result='<input type="hidden" name="newmsg'.$counter.'" value="" />'."\n".  
  '<input type="hidden" name="includemsg'.$counter.'" value="" />'."\n".      if ($env{'form.compmsg'}) {
  '<input type="hidden" name="unamedom'.$counter.'" value="'.$uname.':'          my $result='<div class="LC_Box">'.
  .$udom.'" />'."\n";                     '<h3 class="LC_hcell">'.&mt('Send Message').'</h3>'.
     my ($lastname,$givenn) = split(/,/,$ENV{'form.fullname'});                     '<div class="LC_grade_message_center_body">';
     my $msgfor = $givenn.' '.$lastname;          my ($lastname,$givenn) = split(/,/,$env{'form.fullname'});
     if (scalar(@col_fullnames) > 0) {          my $msgfor = $givenn.' '.$lastname;
  my $lastone = pop @col_fullnames;          if (scalar(@$col_fullnames) > 0) {
  $msgfor .= ', '.(join ', ',@col_fullnames).' and '.$lastone.'.';              my $lastone = pop(@$col_fullnames);
     }              $msgfor .= ', '.(join ', ',@$col_fullnames).' and '.$lastone.'.';
     $result.='<tr><td bgcolor="#ffffff">'."\n".          }
  '&nbsp;<a href="javascript:msgCenter(document.SCORE,'.$counter.          $msgfor =~ s/\'/\\'/g; #' stupid emacs - no! javascript
  ',\''.$msgfor.'\')"; TARGET=_self>'.          $result.='<input type="hidden" name="includemsg'.$counter.'" value="" />'."\n".
  'Compose Message to student'.(scalar(@col_fullnames) >= 1 ? 's' : '').'</a>'.                   '<input type="hidden" name="newmsg'.$counter.'" value="" />'."\n".
  '<br />&nbsp;(Message will be sent when you click on Save & Next below.)'."\n"                    '&nbsp;<a href="javascript:msgCenter(document.SCORE,'.$counter.
  if ($ENV{'form.handgrade'} eq 'yes');                   ',\''.$msgfor.'\');" target="_self">'.
     $request->print($result);                   &mt('Compose message to student'.(scalar(@$col_fullnames) >= 1 ? 's' : '')).'</a><label> ('.
                    &mt('incl. grades').' <input type="checkbox" name="withgrades'.$counter.'" /></label>)'.
                    ' <img src="'.$request->dir_config('lonIconsURL').
                    '/mailbkgrd.gif" width="14" height="10" alt="" name="mailicon'.$counter.'" />'."\n".
                    '<br />&nbsp;('.
                    &mt('Message will be sent when you click on Save &amp; Next below.').")\n".
                    '</div></div>';
           $request->print($result);
       }
   
     my %seen = ();      my %seen = ();
     my @partlist;      my @partlist;
     for (sort keys(%$handgrade)) {      my @gradePartRespid;
  my ($partid,$respid) = split(/_/);      my @part_response_id;
       if ($is_tool) {
           @part_response_id = ([0,'']);
       } else {
           @part_response_id = &flatten_responseType($responseType);
       }
       $request->print(
           '<div class="LC_Box">'
          .'<h3 class="LC_hcell">'.&mt('Assign Grades').'</h3>'
       );
       $request->print(&gradeBox_start());
       foreach my $part_response_id (@part_response_id) {
       my ($partid,$respid) = @{ $part_response_id };
    my $part_resp = join('_',@{ $part_response_id });
  next if ($seen{$partid} > 0);   next if ($seen{$partid} > 0);
  $seen{$partid}++;   $seen{$partid}++;
  next if ($$handgrade{$_} =~ /:no$/);   push(@partlist,$partid);
  push @partlist,$partid;   push(@gradePartRespid,$partid.'.'.$respid);
  my $wgt    = &Apache::lonnet::EXT('resource.'.$partid.'.weight',$symb,$udom,$uname);   $request->print(&gradeBox($request,$symb,$uname,$udom,$counter,$partid,\%record));
  my $wgtmsg = ($wgt > 0 ? '(problem weight)' :       }
       '<font color="red">problem weight assigned by computer</font>');      $request->print(&gradeBox_end()); # </div>
  $wgt       = ($wgt > 0 ? $wgt : '1');      $request->print('</div>');
  my $score  = ($record{'resource.'.$partid.'.awarded'} eq '' ?  
       '' : $record{'resource.'.$partid.'.awarded'}*$wgt);  
  $result='<input type="hidden" name="WGT'.$counter.'_'.$partid.'" value="'.$wgt.'" />';  
  $result.='<table border="0"><tr><td><b>Part </b>'.$partid.' <b>Points: </b></td><td>';  
   
  my $ctr = 0;      $request->print('<div class="LC_grade_info_links">');
  $result.='<table border="0"><tr>';  # display radio buttons in a nice table 10 across      $request->print('</div>');
  while ($ctr<=$wgt) {  
     $result.= '<td><input type="radio" name="RADVAL'.$counter.'_'.$partid.'" '.  
  'onclick="javascript:writeBox(this.form.GD_BOX'.$counter.'_'.$partid.  
  ',this.form.GD_SEL'.$counter.'_'.$partid.','.$ctr.  
  ',this.form.stores'.$counter.'_'.$partid.')" '.  
  ($score eq $ctr ? 'checked':'').' /> '.$ctr."</td>\n";  
     $result.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');  
     $ctr++;  
  }  
  $result.='</tr></table>';  
   
  $result.='</td><td>&nbsp;<b>or</b>&nbsp;</td>';  
  $result.='<td><input type="text" name="GD_BOX'.$counter.'_'.$partid.'"'.  
     ($score ne ''? ' value = "'.$score.'"':'').' size="4" '.  
     'onChange="javascript:updateRadio(this.form.RADVAL'.$counter.'_'.$partid.  
     ',this.form.GD_BOX'.$counter.'_'.$partid.  
     ',this.form.GD_SEL'.$counter.'_'.$partid.  
     ',this.form.stores'.$counter.'_'.$partid.  
     ','.$wgt.')" /></td>'."\n";  
  $result.='<td>/'.$wgt.' '.$wgtmsg.' </td><td>';  
   
  $result.='<select name="GD_SEL'.$counter.'_'.$partid.'" '.  
     'onChange="javascript:clearRadBox(this.form.RADVAL'.$counter.'_'.$partid.  
     ',this.form.GD_BOX'.$counter.'_'.$partid.  
     ',this.form.GD_SEL'.$counter.'_'.$partid.  
     ',this.form.stores'.$counter.'_'.$partid.')" >'."\n";  
  if ($record{'resource.'.$partid.'.solved'} eq 'excused') {  
     $result.='<option> </option>'.  
  '<option selected="on">excused</option></select>';  
  } else {  
     $result.='<option selected="on"> </option>'.  
  '<option>excused</option></select>';  
  }  
  $result.="&nbsp&nbsp\n";  
  $result.='<input type="hidden" name="stores'.$counter.'_'.$partid.'" value="0" />';  
  $result.='</td></tr></table>'."\n";  
  $request->print($result);  
     }  
     $result='<input type="hidden" name="partlist'.$counter.      $result='<input type="hidden" name="partlist'.$counter.
  '" value="'.(join ":",@partlist).'" />'."\n";   '" value="'.(join ":",@partlist).'" />'."\n";
       $result.='<input type="hidden" name="gradePartRespid'.
    '" value="'.(join ":",@gradePartRespid).'" />'."\n" if ($counter == 0);
     my $ctr = 0;      my $ctr = 0;
     while ($ctr < scalar(@partlist)) {      while ($ctr < scalar(@partlist)) {
  $result.='<input type="hidden" name="partid'.$counter.'_'.$ctr.'" value="'.   $result.='<input type="hidden" name="partid'.$counter.'_'.$ctr.'" value="'.
     $partlist[$ctr].'" />'."\n";      $partlist[$ctr].'" />'."\n";
  $ctr++;   $ctr++;
     }      }
     $request->print($result.'</td></tr></table></td></tr></table>'."\n");      $request->print($result.''."\n");
   
   # Done with printing info for one student
   
       $request->print('</div>');#LC_grade_show_user
   
   
     # print end of form      # print end of form
     if ($counter == $total) {      if ($counter == $total) {
  my $endform='<table border="0"><tr><td>'.          my $endform='<br /><hr /><table border="0"><tr><td>'."\n";
     '<input type="hidden" name="gradeOpt" value="" />'."\n";   $endform.='<input type="button" value="'.&mt('Save &amp; Next').'" '.
  if ($ENV{'form.handgrade'} eq 'yes') {      'onclick="javascript:checksubmit(this.form,\'Save & Next\','.
     $endform.='<input type="button" value="Save & Next" '.      $total.','.scalar(@partlist).');" target="_self" /> &nbsp;'."\n";
  'onClick="javascript:checksubmit(\'Save & Next\','.   my $ntstu ='<select name="NTSTU">'.
  $total.','.scalar(@partlist).');" TARGET=_self> &nbsp;'."\n";      '<option>1</option><option>2</option>'.
     my $ntstu ='<select name="NTSTU">'.      '<option>3</option><option>5</option>'.
  '<option>1</option><option>2</option>'.      '<option>7</option><option>10</option></select>'."\n";
  '<option>3</option><option>5</option>'.   my $nsel = ($env{'form.NTSTU'} ne '' ? $env{'form.NTSTU'} : '1');
  '<option>7</option><option>10</option></select>'."\n";   $ntstu =~ s/<option>$nsel</<option selected="selected">$nsel</;
     my $nsel = ($ENV{'form.NTSTU'} ne '' ? $ENV{'form.NTSTU'} : '1');          $endform.=&mt('[_1]student(s)',$ntstu);
     $ntstu =~ s/<option>$nsel</<option selected="on">$nsel</;   $endform.='&nbsp;&nbsp;<input type="button" value="'.&mt('Previous').'" '.
     $endform.=$ntstu.'student(s) &nbsp;&nbsp;';      'onclick="javascript:checksubmit(this.form,\'Previous\');" target="_self" /> &nbsp;'."\n".
  } else {      '<input type="button" value="'.&mt('Next').'" '.
     $endform.='<input type="hidden" name="NTSTU" value="1" />'."\n";      'onclick="javascript:checksubmit(this.form,\'Next\');" target="_self" /> &nbsp;';
  }          $endform.='<span class="LC_warning">'.
  $endform.='<input type="button" value="Next" '.                    &mt('(Next and Previous (student) do not save the scores.)').
     'onClick="javascript:checksubmit(\'Next\');" TARGET=_self> &nbsp;'."\n".                    '</span>'."\n" ;
     '<input type="button" value="Previous" '.          $endform.="<input type='hidden' value='".&get_increment().
     'onClick="javascript:checksubmit(\'Previous\');" TARGET=_self> &nbsp;';              "' name='increment' />";
  $endform.='(Next and Previous do not save the scores.)'."\n"    $endform.='</td></tr></table></form>';
     if ($ENV{'form.handgrade'} eq 'yes');  
  $endform.='</td><tr></table></form>';  
  $endform.=&show_grading_menu_form($symb,$url);  
  $request->print($endform);   $request->print($endform);
     }      }
     return '';      return '';
 }  }
   
   sub check_collaborators {
       my ($symb,$uname,$udom,$record,$handgrade,$counter) = @_;
       my ($result,@col_fullnames);
       my ($classlist,undef,$fullname) = &getclasslist('all','0');
       foreach my $part (keys(%$handgrade)) {
    my $ncol = &Apache::lonnet::EXT('resource.'.$part.
    '.maxcollaborators',
    $symb,$udom,$uname);
    next if ($ncol <= 0);
    $part =~ s/\_/\./g;
    next if ($record->{'resource.'.$part.'.collaborators'} eq '');
    my (@good_collaborators, @bad_collaborators);
    foreach my $possible_collaborator
       (split(/[,;\s]+/,$record->{'resource.'.$part.'.collaborators'})) { 
       $possible_collaborator =~ s/[\$\^\(\)]//g;
       next if ($possible_collaborator eq '');
       my ($co_name,$co_dom) = split(/:/,$possible_collaborator);
       $co_dom = $udom if (! defined($co_dom) || $co_dom =~ /^domain$/i);
       next if ($co_name eq $uname && $co_dom eq $udom);
       # Doing this grep allows 'fuzzy' specification
       my @matches = grep(/^\Q$co_name\E:\Q$co_dom\E$/i, 
          keys(%$classlist));
       if (! scalar(@matches)) {
    push(@bad_collaborators, $possible_collaborator);
       } else {
    push(@good_collaborators, @matches);
       }
    }
    if (scalar(@good_collaborators) != 0) {
       $result.='<br />'.&mt('Collaborators:').'<ol>';
       foreach my $name (@good_collaborators) {
    my ($lastname,$givenn) = split(/,/,$$fullname{$name});
    push(@col_fullnames, $givenn.' '.$lastname);
    $result.='<li>'.$fullname->{$name}.'</li>';
       }
       $result.='</ol><br />'."\n";
       my ($part)=split(/\./,$part);
       $result.='<input type="hidden" name="collaborator'.$counter.
    '" value="'.$part.':'.(join ':',@good_collaborators).'" />'.
    "\n";
    }
    if (scalar(@bad_collaborators) > 0) {
       $result.='<div class="LC_warning">';
       $result.=&mt('This student has submitted [quant,_1,invalid collaborator]: [_2]',scalar(@bad_collaborators),join(', ',@bad_collaborators));
       $result .= '</div>';
    }         
    if (scalar(@bad_collaborators > $ncol)) {
       $result .= '<div class="LC_warning">';
       $result .= &mt('This student has submitted too many '.
    'collaborators.  Maximum is [_1].',$ncol);
       $result .= '</div>';
    }
       }
       return ($result,$fullname,\@col_fullnames);
   }
   
 #--- Retrieve the last submission for all the parts  #--- Retrieve the last submission for all the parts
 sub get_last_submission {  sub get_last_submission {
     my (%returnhash)=@_;      my ($returnhash,$is_tool)=@_;
     my (@string,$timestamp);      my (@string,$timestamp,%lasthidden);
     if ($returnhash{'version'}) {      if ($$returnhash{'version'}) {
  my %lasthash=();   my %lasthash=();
  my ($version);   my ($version);
  for ($version=1;$version<=$returnhash{'version'};$version++) {   for ($version=1;$version<=$$returnhash{'version'};$version++) {
     foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {      foreach my $key (sort(split(/\:/,
  $lasthash{$_}=$returnhash{$version.':'.$_};   $$returnhash{$version.':keys'}))) {
 # if ($returnhash{$version.':'.$_} =~ /(SUBMITTED|DRAFT)$/) {   $lasthash{$key}=$$returnhash{$version.':'.$key};
    $timestamp = scalar(localtime($returnhash{$version.':timestamp'}));   $timestamp = 
 #       }       &Apache::lonlocal::locallocaltime($$returnhash{$version.':timestamp'});
     }      }
  }   }
  foreach ((keys %lasthash)) {          my (%typeparts,%randombytry);
     if ($_ =~ /\.submission$/) {          my $showsurv = 
  my ($partid,$foo) = split(/submission$/,$_);              &Apache::lonnet::allowed('vas',$env{'request.course.id'});
  my $draft  = $lasthash{$partid.'awarddetail'} eq 'DRAFT' ?          foreach my $key (sort(keys(%lasthash))) {
     '<font color="red">Draft Copy</font> ' : '';              if ($key =~ /\.type$/) {
  push @string, (join(':',$_,$draft.$lasthash{$_}));                  if (($lasthash{$key} eq 'anonsurvey') || 
     }                      ($lasthash{$key} eq 'anonsurveycred') ||
                       ($lasthash{$key} eq 'randomizetry')) {
                       my ($ign,@parts) = split(/\./,$key);
                       pop(@parts);
                       my $id = join('.',@parts);
                       if ($lasthash{$key} eq 'randomizetry') {
                           $randombytry{$ign.'.'.$id} = $lasthash{$key};
                       } else {
                           unless ($showsurv) {
                               $typeparts{$ign.'.'.$id} = $lasthash{$key};
                           }
                       }
                       delete($lasthash{$key});
                   }
               }
           }
           my @hidden = keys(%typeparts);
           my @randomize = keys(%randombytry);
    foreach my $key (keys(%lasthash)) {
       next if ($key !~ /\.submission$/);
               my $hide;
               if (@hidden) {
                   foreach my $id (@hidden) {
                       if ($key =~ /^\Q$id\E/) {
                           $hide = 'anon';
                           last;
                       }
                   }
               }
               unless ($hide) {
                   if (@randomize) {
                       foreach my $id (@randomize) {
                           if ($key =~ /^\Q$id\E/) {
                               $hide = 'rand';
                               last;
                           }
                       }
                   }
               }
       my ($partid,$foo) = split(/submission$/,$key);
       my $draft  = $lasthash{$partid.'awarddetail'} eq 'DRAFT' ? 1 : 0;
               push(@string, join(':', $key, $hide, $draft, (
                   ref($lasthash{$key}) eq 'ARRAY' ?
                       join(',', @{$lasthash{$key}}) : $lasthash{$key}) ));
  }   }
     }      }
     @string = $string[0] eq '' ? 'Nothing submitted - no attempts.' : @string;      if (!@string) {
     return \@string,\$timestamp;          my $msg;
           if ($is_tool) {
               $msg = &mt('No grade passed back.');
           } else {
               $msg = &mt('Nothing submitted - no attempts.');
           }
    $string[0] =
       '<span class="LC_warning">'.$msg.'</span>';
       }
       return (\@string,\$timestamp);
 }  }
   
 #--- High light keywords, with style choosen by user.  #--- High light keywords, with style choosen by user.
 sub keywords_highlight {  sub keywords_highlight {
     my $string    = shift;      my $string    = shift;
     my $size      = $ENV{'form.kwsize'} eq '0' ? '' : 'size='.$ENV{'form.kwsize'};      my $size      = $env{'form.kwsize'} eq '0' ? '' : 'size='.$env{'form.kwsize'};
     my $styleon   = $ENV{'form.kwstyle'} eq ''  ? '' : $ENV{'form.kwstyle'};      my $styleon   = $env{'form.kwstyle'} eq ''  ? '' : $env{'form.kwstyle'};
     (my $styleoff = $styleon) =~ s/\</\<\//;      (my $styleoff = $styleon) =~ s/\</\<\//;
     my @keylist   = split(/[,\s+]/,$ENV{'form.keywords'});      my @keylist   = split(/[,\s+]/,$env{'form.keywords'});
     foreach (@keylist) {      foreach my $keyword (@keylist) {
  $string =~ s/\b\Q$_\E(\b|\.)/\<font color\=$ENV{'form.kwclr'} $size\>$styleon$_$styleoff\<\/font\>/gi;   $string =~ s/\b\Q$keyword\E(\b|\.)/<font color\=$env{'form.kwclr'} $size\>$styleon$keyword$styleoff<\/font>/gi;
     }      }
     # This is not really the right place to do this, but I cannot find a  
     # better one at this time.  So here we go - the m in the s:::mg causes  
     # ^ to match the beginning of a new line.  So we replace(???) the beginning  
     # of the line with <br /> to make things formatted a little better.  
     $string =~ s:^:<br />:mg;  
     return $string;      return $string;
 }  }
   
   # For Tasks provide a mechanism to display previous version for one specific student
   
   sub show_previous_task_version {
       my ($request,$symb) = @_;
       if ($symb eq '') {
           $request->print(
               '<span class="LC_error">'.
               &mt('Unable to handle ambiguous references.').
               '</span>');
           return '';
       }
       my ($uname,$udom) = ($env{'form.student'},$env{'form.userdom'});
       my $usec = &Apache::lonnet::getsection($udom,$uname,$env{'request.course.id'});
       if (!&canview($usec)) {
           $request->print(
               '<span class="LC_warning">'.
               &mt('Unable to view previous version for requested student.').
               ' '.&mt('([_1] in section [_2] in course id [_3])',
                       $uname.':'.$udom,$usec,$env{'request.course.id'}).
               '</span>');
           return;
       }
       my $mode = 'both';
       my $isTask = ($symb =~/\.task$/);
       if ($isTask) {
           if ($env{'form.previousversion'} =~ /^\d+$/) {
               if ($env{'form.fullname'} eq '') {
                   $env{'form.fullname'} =
                       &Apache::loncommon::plainname($uname,$udom,'lastname');
               }
               my $probtitle=&Apache::lonnet::gettitle($symb);
               $request->print("\n\n".
                               '<div class="LC_grade_show_user">'.
                               '<h2>'.&nameUserString(undef,$env{'form.fullname'},$uname,$udom).
                               '</h2>'."\n");
               &Apache::lonxml::clear_problem_counter();
               $request->print(&show_problem($request,$symb,$uname,$udom,1,1,$mode,
                               {'previousversion' => $env{'form.previousversion'} }));
               $request->print("\n</div>");
           }
       }
       return;
   }
   
   sub choose_task_version_form {
       my ($symb,$uname,$udom,$nomenu) = @_;
       my $isTask = ($symb =~/\.task$/);
       my ($current,$version,$result,$js,$displayed,$rowtitle);
       if ($isTask) {
           my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},
                                                 $udom,$uname);
           if (($record{'resource.0.version'} eq '') ||
               ($record{'resource.0.version'} < 2)) {
               return ($record{'resource.0.version'},
                       $record{'resource.0.version'},$result,$js);
           } else {
               $current = $record{'resource.0.version'};
           }
           if ($env{'form.previousversion'}) {
               $displayed = $env{'form.previousversion'};
               $rowtitle = &mt('Choose another version:')
           } else {
               $displayed = $current;
               $rowtitle = &mt('Show earlier version:');
           }
           $result = '<div class="LC_left_float">';
           my $list;
           my $numversions = 0;
           for (my $i=1; $i<=$record{'resource.0.version'}; $i++) {
               if ($i == $current) {
                   if (!$env{'form.previousversion'} || $nomenu) {
                       next;
                   } else {
                       $list .= '<option value="'.$i.'">'.&mt('Current').'</option>'."\n";
                       $numversions ++;
                   }
               } elsif (defined($record{'resource.'.$i.'.0.status'})) {
                   unless ($i == $env{'form.previousversion'}) {
                       $numversions ++;
                   }
                   $list .= '<option value="'.$i.'">'.$i.'</option>'."\n";
               }
           }
           if ($numversions) {
               $symb = &HTML::Entities::encode($symb,'<>"&');
               $result .=
                   '<form name="getprev" method="post" action=""'.
                   ' onsubmit="return previousVersion('."'$uname','$udom','$symb','$displayed'".');">'.
                   &Apache::loncommon::start_data_table().
                   &Apache::loncommon::start_data_table_row().
                   '<th align="left">'.$rowtitle.'</th>'.
                   '<td><select name="version">'.
                   '<option>'.&mt('Select').'</option>'.
                   $list.
                   '</select></td>'.
                   &Apache::loncommon::end_data_table_row();
               unless ($nomenu) {
                   $result .= &Apache::loncommon::start_data_table_row().
                   '<th align="left">'.&mt('Open in new window').'</th>'.
                   '<td><span class="LC_nobreak">'.
                   '<label><input type="radio" name="prevwin" value="1" />'.
                   &mt('Yes').'</label>'.
                   '<label><input type="radio" name="prevwin" value="0" checked="checked" />'.&mt('No').'</label>'.
                   '</span></td>'.
                   &Apache::loncommon::end_data_table_row();
               }
               $result .=
                   &Apache::loncommon::start_data_table_row().
                   '<th align="left">&nbsp;</th>'.
                   '<td>'.
                   '<input type="submit" name="prevsub" value="'.&mt('Display').'" />'.
                   '</td>'.
                   &Apache::loncommon::end_data_table_row().
                   &Apache::loncommon::end_data_table().
                   '</form>';
               $js = &previous_display_javascript($nomenu,$current);
           } elsif ($displayed && $nomenu) {
               $result .= '<a href="javascript:window.close()">'.&mt('Close window').'</a>';
           } else {
               $result .= &mt('No previous versions to show for this student');
           }
           $result .= '</div>';
       }
       return ($current,$displayed,$result,$js);
   }
   
   sub previous_display_javascript {
       my ($nomenu,$current) = @_;
       my $js = <<"JSONE";
   <script type="text/javascript">
   // <![CDATA[
   function previousVersion(uname,udom,symb) {
       var current = '$current';
       var version = document.getprev.version.options[document.getprev.version.selectedIndex].value;
       var prevstr = new RegExp("^\\\\d+\$");
       if (!prevstr.test(version)) {
           return false;
       }
       var url = '';
       if (version == current) {
           url = '/adm/grades?student='+uname+'&userdom='+udom+'&symb='+symb+'&command=submission';
       } else {
           url = '/adm/grades?student='+uname+'&userdom='+udom+'&symb='+symb+'&command=versionsub&previousversion='+version;
       }
   JSONE
       if ($nomenu) {
           $js .= <<"JSTWO";
       document.location.href = url;
   JSTWO
       } else {
           $js .= <<"JSTHREE";
       var newwin = 0;
       for (var i=0; i<document.getprev.prevwin.length; i++) {
           if (document.getprev.prevwin[i].checked == true) {
               newwin = document.getprev.prevwin[i].value;
           }
       }
       if (newwin == 1) {
           var options = 'height=600,width=800,resizable=yes,scrollbars=yes,location=no,menubar=no,toolbar=no';
           url = url+'&inhibitmenu=yes';
           if (typeof(previousWin) == 'undefined' || previousWin.closed) {
               previousWin = window.open(url,'',options,1);
           } else {
               previousWin.location.href = url;
           }
           previousWin.focus();
           return false;
       } else {
           document.location.href = url;
           return false;
       }
   JSTHREE
       }
       $js .= <<"ENDJS";
       return false;
   }
   // ]]>
   </script>
   ENDJS
   
   }
   
 #--- Called from submission routine  #--- Called from submission routine
 sub processHandGrade {  sub processHandGrade {
     my ($request) = shift;      my ($request,$symb) = @_;
     my $url    = $ENV{'form.url'};      my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
     my $symb   = $ENV{'form.symb'};      my $button = $env{'form.gradeOpt'};
     my $button = $ENV{'form.gradeOpt'};      my $ngrade = $env{'form.NCT'};
     my $ngrade = $ENV{'form.NCT'};      my $ntstu  = $env{'form.NTSTU'};
     my $ntstu  = $ENV{'form.NTSTU'};      my $cdom   = $env{'course.'.$env{'request.course.id'}.'.domain'};
       my $cnum   = $env{'course.'.$env{'request.course.id'}.'.num'};
       my ($res_error,%queueable);
       my ($partlist,$handgrade,$responseType,$numresp,$numessay) = &response_type($symb,\$res_error);
       if ($res_error) {
           $request->print(&navmap_errormsg());
           return;
       } else {
           foreach my $part (@{$partlist}) {
               if (ref($responseType->{$part}) eq 'HASH') {
                   foreach my $id (keys(%{$responseType->{$part}})) {
                       if (($responseType->{$part}->{$id} eq 'essay') ||
                           (lc($handgrade->{$part.'_'.$id}) eq 'yes')) {
                           $queueable{$part} = 1;
                           last;
                       }
                   }
               }
           }
       }
   
     if ($button eq 'Save & Next') {      if ($button eq 'Save & Next') {
  my $ctr = 0;   my $ctr = 0;
  while ($ctr < $ngrade) {   while ($ctr < $ngrade) {
     my ($uname,$udom) = split(/:/,$ENV{'form.unamedom'.$ctr});      my ($uname,$udom) = split(/:/,$env{'form.unamedom'.$ctr});
     my ($errorflag) = &saveHandGrade($request,$url,$symb,$uname,$udom,$ctr);      my ($errorflag,$pts,$wgt,$numhidden) = 
                   &saveHandGrade($request,$symb,$uname,$udom,$ctr,undef,undef,\%queueable);
     my $includemsg = $ENV{'form.includemsg'.$ctr};      if ($errorflag eq 'no_score') {
    $ctr++;
    next;
       }
       if ($errorflag eq 'not_allowed') {
    $request->print(
                       '<span class="LC_error">'
                      .&mt('Not allowed to modify grades for [_1]',"$uname:$udom")
                      .'</span>');
    $ctr++;
    next;
       }
               if ($numhidden) {
                   $request->print(
                       '<span class="LC_info">'
                      .&mt('For [_1]: [quant,_2,transaction] hidden',"$uname:$udom",$numhidden)
                      .'</span><br />');
               }
       my $includemsg = $env{'form.includemsg'.$ctr};
     my ($subject,$message,$msgstatus) = ('','','');      my ($subject,$message,$msgstatus) = ('','','');
       my $restitle = &Apache::lonnet::gettitle($symb);
               my ($feedurl,$showsymb) =
    &get_feedurl_and_symb($symb,$uname,$udom);
       my $messagetail;
     if ($includemsg =~ /savemsg|newmsg\Q$ctr\E/) {      if ($includemsg =~ /savemsg|newmsg\Q$ctr\E/) {
  $subject = $ENV{'form.msgsub'} if ($includemsg =~ /^msgsub/);   $subject = $env{'form.msgsub'} if ($includemsg =~ /msgsub/);
    unless ($subject=~/\w/) { $subject=&mt('Grading Feedback'); }
    $subject.=' ['.$restitle.']';
  my (@msgnum) = split(/,/,$includemsg);   my (@msgnum) = split(/,/,$includemsg);
  foreach (@msgnum) {   foreach (@msgnum) {
     $message.=$ENV{'form.'.$_} if ($_ =~ /savemsg|newmsg/ && $_ ne '');      $message.=$env{'form.'.$_} if ($_ =~ /savemsg|newmsg/ && $_ ne '');
    }
    $message =&Apache::lonfeedback::clear_out_html($message);
    if ($env{'form.withgrades'.$ctr}) {
       $message.="\n\nPoint".($pts > 1 ? 's':'').' awarded = '.$pts.' out of '.$wgt;
       $messagetail = " for <a href=\"".
                      $feedurl."?symb=$showsymb\">$restitle</a>";
  }   }
  $message =~ s/\s+/ /g;   $msgstatus = 
  $msgstatus = &Apache::lonmsg::user_normal_msg ($uname,$udom,                      &Apache::lonmsg::user_normal_msg($uname,$udom,$subject,
        $ENV{'form.msgsub'},$message);       $message.$messagetail,
     }                                                       undef,$feedurl,undef,
     if ($ENV{'form.collaborator'.$ctr}) {                                                       undef,undef,$showsymb,
  my (@collaborators) = split(/:/,$ENV{'form.collaborator'.$ctr});                                                       $restitle);
  foreach (@collaborators) {   $request->print('<br />'.&mt('Sending message to [_1]',$uname.':'.$udom).': '.
     &saveHandGrade($request,$url,$symb,$_,$udom,$ctr,   $msgstatus.'<br />');
    $ENV{'form.unamedom'.$ctr});      }
     if ($message ne '') {      if ($env{'form.collaborator'.$ctr}) {
  $msgstatus = &Apache::lonmsg::user_normal_msg ($_,$udom,   my @collabstrs=&Apache::loncommon::get_env_multiple("form.collaborator$ctr");
        $ENV{'form.msgsub'},   foreach my $collabstr (@collabstrs) {
        $message);      my ($part,@collaborators) = split(/:/,$collabstr);
       foreach my $collaborator (@collaborators) {
    my ($errorflag,$pts,$wgt) = 
       &saveHandGrade($request,$symb,$collaborator,$udom,$ctr,
      $env{'form.unamedom'.$ctr},$part,\%queueable);
    if ($errorflag eq 'not_allowed') {
       $request->print("<span class=\"LC_error\">".&mt('Not allowed to modify grades for [_1]',"$collaborator:$udom")."</span>");
       next;
    } elsif ($message ne '') {
       my ($baseurl,$showsymb) = 
    &get_feedurl_and_symb($symb,$collaborator,
         $udom);
       if ($env{'form.withgrades'.$ctr}) {
    $messagetail = " for <a href=\"".
                                       $baseurl."?symb=$showsymb\">$restitle</a>";
       }
       $msgstatus = 
    &Apache::lonmsg::user_normal_msg($collaborator,$udom,$subject,$message.$messagetail,undef,$baseurl,undef,undef,undef,$showsymb,$restitle);
    }
     }      }
  }   }
     }      }
Line 1252  sub processHandGrade { Line 3285  sub processHandGrade {
  }   }
     }      }
   
     # Keywords sorted in alphabatical order  
     my $loginuser = $ENV{'user.name'}.':'.$ENV{'user.domain'};  
     my %keyhash = ();      my %keyhash = ();
     $ENV{'form.keywords'}           =~ s/,\s{0,}|\s+/ /g;      if ($numessay) {
     $ENV{'form.keywords'}           =~ s/^\s+|\s+$//;   # Keywords sorted in alphabatical order
     my (@keywords) = sort(split(/\s+/,$ENV{'form.keywords'}));   my $loginuser = $env{'user.name'}.':'.$env{'user.domain'};
     $ENV{'form.keywords'} = join(' ',@keywords);   $env{'form.keywords'}           =~ s/,\s{0,}|\s+/ /g;
     $keyhash{$symb.'_keywords'}     = $ENV{'form.keywords'};   $env{'form.keywords'}           =~ s/^\s+|\s+$//g;
     $keyhash{$symb.'_subject'}      = $ENV{'form.msgsub'};   my (@keywords) = sort(split(/\s+/,$env{'form.keywords'}));
     $keyhash{$loginuser.'_kwclr'}   = $ENV{'form.kwclr'};   $env{'form.keywords'} = join(' ',@keywords);
     $keyhash{$loginuser.'_kwsize'}  = $ENV{'form.kwsize'};   $keyhash{$symb.'_keywords'}     = $env{'form.keywords'};
     $keyhash{$loginuser.'_kwstyle'} = $ENV{'form.kwstyle'};   $keyhash{$symb.'_subject'}      = $env{'form.msgsub'};
    $keyhash{$loginuser.'_kwclr'}   = $env{'form.kwclr'};
     # message center - Order of message gets changed. Blank line is eliminated.   $keyhash{$loginuser.'_kwsize'}  = $env{'form.kwsize'};
     # New messages are saved in ENV for the next student.   $keyhash{$loginuser.'_kwstyle'} = $env{'form.kwstyle'};
     # All messages are saved in nohist_handgrade.db      }
     my ($ctr,$idx) = (1,1);  
     while ($ctr <= $ENV{'form.savemsgN'}) {      if ($env{'form.compmsg'}) {
  if ($ENV{'form.savemsg'.$ctr} ne '') {   # message center - Order of message gets changed. Blank line is eliminated.
     $keyhash{$symb.'_savemsg'.$idx} = $ENV{'form.savemsg'.$ctr};   # New messages are saved in env for the next student.
     $idx++;   # All messages are saved in nohist_handgrade.db
    my ($ctr,$idx) = (1,1);
    while ($ctr <= $env{'form.savemsgN'}) {
       if ($env{'form.savemsg'.$ctr} ne '') {
    $keyhash{$symb.'_savemsg'.$idx} = $env{'form.savemsg'.$ctr};
    $idx++;
       }
       $ctr++;
  }   }
  $ctr++;   $ctr = 0;
     }   while ($ctr < $ngrade) {
     $ctr = 0;      if ($env{'form.newmsg'.$ctr} ne '') {
     while ($ctr < $ngrade) {          $keyhash{$symb.'_savemsg'.$idx} = $env{'form.newmsg'.$ctr};
  if ($ENV{'form.newmsg'.$ctr} ne '') {          $env{'form.savemsg'.$idx} = $env{'form.newmsg'.$ctr};
     $keyhash{$symb.'_savemsg'.$idx} = $ENV{'form.newmsg'.$ctr};          $idx++;
     $ENV{'form.savemsg'.$idx} = $ENV{'form.newmsg'.$ctr};      }
     $idx++;      $ctr++;
  }   }
  $ctr++;   $env{'form.savemsgN'} = --$idx;
    $keyhash{$symb.'_savemsgN'} = $env{'form.savemsgN'};
       }
       if (($numessay) || ($env{'form.compmsg'})) {
           my $putresult = &Apache::lonnet::put
               ('nohist_handgrade',\%keyhash,$cdom,$cnum);
     }      }
     $ENV{'form.savemsgN'} = --$idx;  
     $keyhash{$symb.'_savemsgN'} = $ENV{'form.savemsgN'};  
     my $putresult = &Apache::lonnet::put  
  ('nohist_handgrade',\%keyhash,  
  $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},  
  $ENV{'course.'.$ENV{'request.course.id'}.'.num'});  
   
     # Called by Save & Refresh from Highlight Attribute Window      # Called by Save & Refresh from Highlight Attribute Window
     if ($ENV{'form.refresh'} eq 'on') {      my (undef,undef,$fullname) = &getclasslist($env{'form.section'},'1');
  my $ctr = 0;      if ($env{'form.refresh'} eq 'on') {
  $ENV{'form.NTSTU'}=$ngrade;   my ($ctr,$total) = (0,0);
  while ($ctr < $ngrade) {   while ($ctr < $ngrade) {
     ($ENV{'form.student'},$ENV{'form.userdom'}) = split(/:/,$ENV{'form.unamedom'.$ctr});      $total++ if  $env{'form.unamedom'.$ctr} ne '';
     &submission($request,$ctr,$ngrade-1);      $ctr++;
    }
    $env{'form.NTSTU'}=$ngrade;
    $ctr = 0;
    while ($ctr < $total) {
       my $processUser = $env{'form.unamedom'.$ctr};
       ($env{'form.student'},$env{'form.userdom'}) = split(/:/,$processUser);
       $env{'form.fullname'} = $$fullname{$processUser};
       &submission($request,$ctr,$total-1,$symb);
     $ctr++;      $ctr++;
  }   }
  return '';   return '';
     }      }
   
     # Get the next/previous one or group of students      # Get the next/previous one or group of students
     my $firststu = $ENV{'form.unamedom0'};      my $firststu = $env{'form.unamedom0'};
     my $laststu = $ENV{'form.unamedom'.($ngrade-1)};      my $laststu = $env{'form.unamedom'.($ngrade-1)};
     $ctr = 2;      my $ctr = 2;
     while ($laststu eq '') {      while ($laststu eq '') {
  $laststu  = $ENV{'form.unamedom'.($ngrade-$ctr)};   $laststu  = $env{'form.unamedom'.($ngrade-$ctr)};
  $ctr++;   $ctr++;
  $laststu = $firststu if ($ctr > $ngrade);   $laststu = $firststu if ($ctr > $ngrade);
     }      }
   
     my (undef,undef,$fullname) = &getclasslist($ENV{'form.section'},'0');  
     my (@parsedlist,@nextlist);      my (@parsedlist,@nextlist);
     my ($nextflg) = 0;      my ($nextflg) = 0;
     foreach (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {      foreach my $item (sort 
        {
    if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
        return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
    }
    return $a cmp $b;
        } (keys(%$fullname))) {
  if ($nextflg == 1 && $button =~ /Next$/) {   if ($nextflg == 1 && $button =~ /Next$/) {
     push @parsedlist,$_;      push(@parsedlist,$item);
  }   }
  $nextflg = 1 if ($_ eq $laststu);   $nextflg = 1 if ($item eq $laststu);
  if ($button eq 'Previous') {   if ($button eq 'Previous') {
     last if ($_ eq $firststu);      last if ($item eq $firststu);
     push @parsedlist,$_;      push(@parsedlist,$item);
  }   }
     }      }
     $ctr = 0;      $ctr = 0;
     my ($partlist,$handgrade) = &response_type($ENV{'form.url'});  
     @parsedlist = reverse @parsedlist if ($button eq 'Previous');      @parsedlist = reverse @parsedlist if ($button eq 'Previous');
     foreach my $student (@parsedlist) {      foreach my $student (@parsedlist) {
    my $submitonly=$env{'form.submitonly'};
  my ($uname,$udom) = split(/:/,$student);   my ($uname,$udom) = split(/:/,$student);
  if ($ENV{'form.submitonly'} eq 'yes') {  
     my (%status) = &student_gradeStatus($ENV{'form.url'},$symb,$udom,$uname,$partlist) ;   if ($submitonly eq 'queued') {
     my $statusflg = '';      my %queue_status = 
     foreach (keys(%status)) {   &Apache::bridgetask::get_student_status($symb,$cdom,$cnum,
  $statusflg = 1 if ($status{$_} ne 'nothing');   $udom,$uname);
  my ($foo,$partid,$foo1) = split(/\./);      next if (!defined($queue_status{'gradingqueue'}));
  $statusflg = '' if ($status{'resource.'.$partid.'.submitted_by'} ne '');   }
   
    if ($submitonly =~ /^(yes|graded|incorrect)$/) {
   #    my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},$udom,$uname);
       my %status=&student_gradeStatus($symb,$udom,$uname,$partlist);
       my $submitted = 0;
       my $ungraded = 0;
       my $incorrect = 0;
       foreach my $item (keys(%status)) {
    $submitted = 1 if ($status{$item} ne 'nothing');
    $ungraded = 1 if ($status{$item} =~ /^ungraded/);
    $incorrect = 1 if ($status{$item} =~ /^incorrect/);
    my ($foo,$partid,$foo1) = split(/\./,$item);
    if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
       $submitted = 0;
    }
     }      }
     next if ($statusflg eq '');      next if (!$submitted && ($submitonly eq 'yes' ||
        $submitonly eq 'incorrect' ||
        $submitonly eq 'graded'));
       next if (!$ungraded && ($submitonly eq 'graded'));
       next if (!$incorrect && $submitonly eq 'incorrect');
  }   }
  push @nextlist,$student if ($ctr < $ntstu);   push(@nextlist,$student) if ($ctr < $ntstu);
    last if ($ctr == $ntstu);
  $ctr++;   $ctr++;
     }      }
   
     $ctr = 0;      $ctr = 0;
     my $total = scalar(@nextlist)-1;      my $total = scalar(@nextlist)-1;
   
     foreach (sort @nextlist) {      foreach (sort(@nextlist)) {
  my ($uname,$udom,$submitter) = split(/:/);   my ($uname,$udom,$submitter) = split(/:/);
  $ENV{'form.student'}  = $uname;   $env{'form.student'}  = $uname;
  $ENV{'form.userdom'}  = $udom;   $env{'form.userdom'}  = $udom;
  $ENV{'form.fullname'} = $$fullname{$_};   $env{'form.fullname'} = $$fullname{$_};
 # $ENV{'form.'.$_.':submitted_by'} = $submitter;   &submission($request,$ctr,$total,$symb);
 # print "submitter=$ENV{'form.'.$_.':submitted_by'}= $submitter:<br>";  
  &submission($request,$ctr,$total);  
  $ctr++;   $ctr++;
     }      }
     if ($total < 0) {      if ($total < 0) {
  my $the_end = '<h3><font color="red">LON-CAPA User Message</font></h3><br />'."\n";   my $the_end.='<p>'.&mt('[_1]Message:[_2] No more students for this section or class.','<b>','</b>').'</p>'."\n";
  $the_end.='<b>Message: </b> No more students for this section or class.<br /><br />'."\n";  
  $the_end.='Click on the button below to return to the grading menu.<br /><br />'."\n";  
  $the_end.=&show_grading_menu_form ($symb,$url);  
  $request->print($the_end);   $request->print($the_end);
     }      }
     return '';      return '';
Line 1371  sub processHandGrade { Line 3436  sub processHandGrade {
   
 #---- Save the score and award for each student, if changed  #---- Save the score and award for each student, if changed
 sub saveHandGrade {  sub saveHandGrade {
     my ($request,$url,$symb,$stuname,$domain,$newflg,$submitter) = @_;      my ($request,$symb,$stuname,$domain,$newflg,$submitter,$part,$queueable) = @_;
     my %record=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},$domain,$stuname);      my @version_parts;
     my %newrecord;      my $usec = &Apache::lonnet::getsection($domain,$stuname,
     foreach (split(/:/,$ENV{'form.partlist'.$newflg})) {     $env{'request.course.id'});
  if ($ENV{'form.GD_SEL'.$newflg.'_'.$_} eq 'excused') {      if (!&canmodify($usec)) { return('not_allowed'); }
     if ($record{'resource.'.$_.'.solved'} ne 'excused') {      my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},$domain,$stuname);
  $newrecord{'resource.'.$_.'.solved'} = 'excused';      my @parts_graded;
  if (exists($record{'resource.'.$_.'.awarded'})) {      my %newrecord  = ();
     $newrecord{'resource.'.$_.'.awarded'} = '';      my ($pts,$wgt,$totchg) = ('','',0);
       my %aggregate = ();
       my $aggregateflag = 0;
       if ($env{'form.HIDE'.$newflg}) {
           my ($version,$parts) = split(/:/,$env{'form.HIDE'.$newflg},2);
           my $numchgs = &makehidden($version,$parts,\%record,$symb,$domain,$stuname,1);
           $totchg += $numchgs;
       }
       my @parts = split(/:/,$env{'form.partlist'.$newflg});
       foreach my $new_part (@parts) {
    #collaborator ($submi may vary for different parts
    if ($submitter && $new_part ne $part) { next; }
    my $dropMenu = $env{'form.GD_SEL'.$newflg.'_'.$new_part};
    if ($dropMenu eq 'excused') {
       if ($record{'resource.'.$new_part.'.solved'} ne 'excused') {
    $newrecord{'resource.'.$new_part.'.solved'} = 'excused';
    if (exists($record{'resource.'.$new_part.'.awarded'})) {
       $newrecord{'resource.'.$new_part.'.awarded'} = '';
  }   }
           $newrecord{'resource.'.$new_part.'.regrader'}="$env{'user.name'}:$env{'user.domain'}";
     }      }
  } else {   } elsif ($dropMenu eq 'reset status'
     my $pts = ($ENV{'form.GD_BOX'.$newflg.'_'.$_} ne '' ?    && exists($record{'resource.'.$new_part.'.solved'})) { #don't bother if no old records -> no attempts
        $ENV{'form.GD_BOX'.$newflg.'_'.$_} :       foreach my $key (keys(%record)) {
        $ENV{'form.RADVAL'.$newflg.'_'.$_});   if ($key=~/^resource\.\Q$new_part\E\./) { $newrecord{$key} = ''; }
     my $wgt = $ENV{'form.WGT'.$newflg.'_'.$_} eq '' ? 1 :       }
  $ENV{'form.WGT'.$newflg.'_'.$_};      $newrecord{'resource.'.$new_part.'.regrader'}=
    "$env{'user.name'}:$env{'user.domain'}";
               my $totaltries = $record{'resource.'.$part.'.tries'};
   
               my %last_resets = &get_last_resets($symb,$env{'request.course.id'},
          [$new_part]);
               my $aggtries =$totaltries;
               if ($last_resets{$new_part}) {
                   $aggtries = &get_num_tries(\%record,$last_resets{$new_part},
      $new_part);
               }
   
               my $solvedstatus = $record{'resource.'.$new_part.'.solved'};
               if ($aggtries > 0) {
                   &decrement_aggs($symb,$new_part,\%aggregate,$aggtries,$totaltries,$solvedstatus);
                   $aggregateflag = 1;
               }
    } elsif ($dropMenu eq '') {
       $pts = ($env{'form.GD_BOX'.$newflg.'_'.$new_part} ne '' ? 
       $env{'form.GD_BOX'.$newflg.'_'.$new_part} : 
       $env{'form.RADVAL'.$newflg.'_'.$new_part});
       if ($pts eq '' && $env{'form.GD_SEL'.$newflg.'_'.$new_part} eq '') {
    next;
       }
       $wgt = $env{'form.WGT'.$newflg.'_'.$new_part} eq '' ? 1 : 
    $env{'form.WGT'.$newflg.'_'.$new_part};
     my $partial= $pts/$wgt;      my $partial= $pts/$wgt;
     $newrecord{'resource.'.$_.'.awarded'}  = $partial       if ($partial eq $record{'resource.'.$new_part.'.awarded'}) {
  if ($record{'resource.'.$_.'.awarded'} ne $partial);   #do not update score for part if not changed.
     my $reckey = 'resource.'.$_.'.solved';                  &handback_files($request,$symb,$stuname,$domain,$newflg,$new_part,\%newrecord);
    next;
       } else {
           push(@parts_graded,$new_part);
       }
       if ($record{'resource.'.$new_part.'.awarded'} ne $partial) {
    $newrecord{'resource.'.$new_part.'.awarded'}  = $partial;
       }
       my $reckey = 'resource.'.$new_part.'.solved';
     if ($partial == 0) {      if ($partial == 0) {
  $newrecord{$reckey} = 'incorrect_by_override'    if ($record{$reckey} ne 'incorrect_by_override') {
     if ($record{$reckey} ne 'incorrect_by_override');      $newrecord{$reckey} = 'incorrect_by_override';
    }
     } else {      } else {
  $newrecord{$reckey} = 'correct_by_override'    if ($record{$reckey} ne 'correct_by_override') {
     if ($record{$reckey} ne 'correct_by_override');      $newrecord{$reckey} = 'correct_by_override';
    }
       }    
       if ($submitter && 
    ($record{'resource.'.$new_part.'.submitted_by'} ne $submitter)) {
    $newrecord{'resource.'.$new_part.'.submitted_by'} = $submitter;
       }
       $newrecord{'resource.'.$new_part.'.regrader'}=
    "$env{'user.name'}:$env{'user.domain'}";
    }
    # unless problem has been graded, set flag to version the submitted files
    unless ($record{'resource.'.$new_part.'.solved'} =~ /^correct_/  || 
           $record{'resource.'.$new_part.'.solved'} eq 'incorrect_by_override' ||
           $dropMenu eq 'reset status')
      {
       push(@version_parts,$new_part);
    }
       }
       my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
       my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
   
       if (%newrecord) {
           if (@version_parts) {
               my @changed_keys = &version_portfiles(\%record, \@parts_graded, 
                                   $env{'request.course.id'}, $symb, $domain, $stuname, \@version_parts);
       @newrecord{@changed_keys} = @record{@changed_keys};
       foreach my $new_part (@version_parts) {
    &handback_files($request,$symb,$stuname,$domain,$newflg,
    $new_part,\%newrecord);
     }      }
     $newrecord{'resource.'.$_.'.submitted_by'} = $submitter           }
  if ($submitter && ($record{'resource.'.$_.'.submitted_by'} ne $submitter));   &Apache::lonnet::cstore(\%newrecord,$symb,
    $env{'request.course.id'},$domain,$stuname);
    &check_and_remove_from_queue(\@parts,\%record,\%newrecord,$symb,
        $cdom,$cnum,$domain,$stuname,$queueable);
       }
       if ($aggregateflag) {
           &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
         $cdom,$cnum);
       }
       return ('',$pts,$wgt,$totchg);
   }
   
   sub makehidden {
       my ($version,$parts,$record,$symb,$domain,$stuname,$tolog) = @_;
       return unless (ref($record) eq 'HASH');
       my %modified;
       my $numchanged = 0;
       if (exists($record->{$version.':keys'})) {
           my $partsregexp = $parts;
           $partsregexp =~ s/,/|/g;
           foreach my $key (split(/\:/,$record->{$version.':keys'})) {
               if ($key =~ /^resource\.(?:$partsregexp)\.([^\.]+)$/) {
                    my $item = $1;
                    unless (($item eq 'solved') || ($item =~ /^award(|msg|ed)$/)) {
                        $modified{$key} = $record->{$version.':'.$key};
                    }
               } elsif ($key =~ m{^(resource\.(?:$partsregexp)\.[^\.]+\.)(.+)$}) {
                   $modified{$1.'hidden'.$2} = $record->{$version.':'.$key};
               } elsif ($key =~ /^(ip|timestamp|host)$/) {
                   $modified{$key} = $record->{$version.':'.$key};
               }
           }
           if (keys(%modified)) {
               if (&Apache::lonnet::putstore($env{'request.course.id'},$symb,$version,\%modified,
                                             $domain,$stuname,$tolog) eq 'ok') {
                   $numchanged ++;
               }
           }
       }
       return $numchanged;
   }
   
   sub check_and_remove_from_queue {
       my ($parts,$record,$newrecord,$symb,$cdom,$cnum,$domain,$stuname,$queueable) = @_;
       my @ungraded_parts;
       foreach my $part (@{$parts}) {
    if (    $record->{   'resource.'.$part.'.awarded'} eq ''
        && $record->{   'resource.'.$part.'.solved' } ne 'excused'
        && $newrecord->{'resource.'.$part.'.awarded'} eq ''
        && $newrecord->{'resource.'.$part.'.solved' } ne 'excused'
    ) {
               if ($queueable->{$part}) {
           push(@ungraded_parts, $part);
               }
  }   }
     }      }
       if ( !@ungraded_parts ) {
    &Apache::bridgetask::remove_from_queue('gradingqueue',$symb,$cdom,
          $cnum,$domain,$stuname);
       }
   }
   
     if (scalar(keys(%newrecord)) > 0) {  sub handback_files {
  $newrecord{'resource.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";      my ($request,$symb,$stuname,$domain,$newflg,$new_part,$newrecord) = @_;
  &Apache::lonnet::cstore(\%newrecord,$symb,      my $portfolio_root = '/userfiles/portfolio';
  $ENV{'request.course.id'},$domain,$stuname);      my $res_error;
       my ($partlist,$handgrade,$responseType) = &response_type($symb,\$res_error);
       if ($res_error) {
           $request->print('<br />'.&navmap_errormsg().'<br />');
           return;
       }
       my @handedback;
       my $file_msg;
       my @part_response_id = &flatten_responseType($responseType);
       foreach my $part_response_id (@part_response_id) {
       my ($part_id,$resp_id) = @{ $part_response_id };
    my $part_resp = join('_',@{ $part_response_id });
           if (($env{'form.'.$newflg.'_'.$part_resp.'_countreturndoc'} =~ /^\d+$/) & ($new_part eq $part_id)) {
               for (my $counter=1; $counter<=$env{'form.'.$newflg.'_'.$part_resp.'_countreturndoc'}; $counter++) {
                   # if multiple files are uploaded names will be 'returndoc2','returndoc3' 
                   if ($env{'form.'.$newflg.'_'.$part_resp.'_returndoc'.$counter}) {
                       my $fname=$env{'form.'.$newflg.'_'.$part_resp.'_returndoc'.$counter.'.filename'};
                       my ($directory,$answer_file) = 
                           ($env{'form.'.$newflg.'_'.$part_resp.'_origdoc'.$counter} =~ /^(.*?)([^\/]*)$/);
                       my ($answer_name,$answer_ver,$answer_ext) =
           &Apache::lonnet::file_name_version_ext($answer_file);
       my ($portfolio_path) = ($directory =~ /^.+$stuname\/portfolio(.*)/);
                       my $getpropath = 1;
                       my ($dir_list,$listerror) =
                           &Apache::lonnet::dirlist($portfolio_root.$portfolio_path,
                                                    $domain,$stuname,$getpropath);
       my $version = &Apache::lonnet::get_next_version($answer_name,$answer_ext,$dir_list);
                       # fix filename
                       my ($save_file_name) = (($directory.$answer_name.".$version.".$answer_ext) =~ /^.+\/${stuname}\/(.*)/);
                       my $result=&Apache::lonnet::finishuserfileupload($stuname,$domain,
                                              $newflg.'_'.$part_resp.'_returndoc'.$counter,
                                              $save_file_name);
                       if ($result !~ m|^/uploaded/|) {
                           $request->print('<br /><span class="LC_error">'.
                               &mt('An error occurred ([_1]) while trying to upload [_2].',
                                   $result,$newflg.'_'.$part_resp.'_returndoc'.$counter).
                                           '</span>');
                       } else {
                           # mark the file as read only
                           push(@handedback,$save_file_name);
    if (exists($$newrecord{"resource.$new_part.$resp_id.handback"})) {
       $$newrecord{"resource.$new_part.$resp_id.handback"}.=',';
    }
                           $$newrecord{"resource.$new_part.$resp_id.handback"} .= $save_file_name;
    $file_msg.= '<span class="LC_filename"><a href="/uploaded/'."$domain/$stuname/".$save_file_name.'">'.$save_file_name."</a></span> <br />";
                       }
                       $request->print('<br />'.&mt('[_1] will be the uploaded filename [_2]','<span class="LC_info">'.$fname.'</span>','<span class="LC_filename">'.$env{'form.'.$newflg.'_'.$part_resp.'_origdoc'.$counter}.'</span>'));
                   }
               }
           }
     }      }
     return '';      if (@handedback > 0) {
           $request->print('<br />');
           my @what = ($symb,$env{'request.course.id'},'handback');
           &Apache::lonnet::mark_as_readonly($domain,$stuname,\@handedback,\@what);
           my $user_lh = &Apache::loncommon::user_lang($stuname,$domain,$env{'request.course.id'});    
           my ($subject,$message);
           if (scalar(@handedback) == 1) {
               $subject = &mt_user($user_lh,'File Handed Back by Instructor');
               $message = &mt_user($user_lh,'A file has been returned that was originally submitted in response to: ');
           } else {
               $subject = &mt_user($user_lh,'Files Handed Back by Instructor');
               $message = &mt_user($user_lh,'Files have been returned that were originally submitted in response to: ');
           }
           $message .= "<p><strong>".&Apache::lonnet::gettitle($symb)." </strong></p>";
           $message .= &mt_user($user_lh,'The returned file(s) are named: [_1]',"<br />$file_msg <br />").
                       &mt_user($user_lh,'The file(s) can be found in your [_1]portfolio[_2].','<a href="/adm/portfolio">','</a>');
           my ($feedurl,$showsymb) =
               &get_feedurl_and_symb($symb,$domain,$stuname);
           my $restitle = &Apache::lonnet::gettitle($symb);
           $subject .= ' '.&mt_user($user_lh,'(File Returned)').' ['.$restitle.']';
           my $msgstatus =
                &Apache::lonmsg::user_normal_msg($stuname,$domain,$subject,
                    $message,undef,$feedurl,undef,undef,undef,$showsymb,
                    $restitle);
           if ($msgstatus) {
               $request->print(&mt('Notification message status: [_1]','<span class="LC_info">'.$msgstatus.'</span>').'<br />');
           }
       }
       return;
   }
   
   sub get_feedurl_and_symb {
       my ($symb,$uname,$udom) = @_;
       my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
       $url = &Apache::lonnet::clutter($url);
       my $encrypturl=&Apache::lonnet::EXT('resource.0.encrypturl',
    $symb,$udom,$uname);
       if ($encrypturl =~ /^yes$/i) {
    &Apache::lonenc::encrypted(\$url,1);
    &Apache::lonenc::encrypted(\$symb,1);
       }
       return ($url,$symb);
   }
   
   sub get_submitted_files {
       my ($udom,$uname,$partid,$respid,$record) = @_;
       my @files;
       if ($$record{"resource.$partid.$respid.portfiles"}) {
           my $file_url = '/uploaded/'.$udom.'/'.$uname.'/portfolio';
           foreach my $file (split(',',$$record{"resource.$partid.$respid.portfiles"})) {
          push(@files,$file_url.$file);
           }
       }
       if ($$record{"resource.$partid.$respid.uploadedurl"}) {
           push(@files,$$record{"resource.$partid.$respid.uploadedurl"});
       }
       return (\@files);
   }
   
   # ----------- Provides number of tries since last reset.
   sub get_num_tries {
       my ($record,$last_reset,$part) = @_;
       my $timestamp = '';
       my $num_tries = 0;
       if ($$record{'version'}) {
           for (my $version=$$record{'version'};$version>=1;$version--) {
               if (exists($$record{$version.':resource.'.$part.'.solved'})) {
                   $timestamp = $$record{$version.':timestamp'};
                   if ($timestamp > $last_reset) {
                       $num_tries ++;
                   } else {
                       last;
                   }
               }
           }
       }
       return $num_tries;
   }
   
   # ----------- Determine decrements required in aggregate totals 
   sub decrement_aggs {
       my ($symb,$part,$aggregate,$aggtries,$totaltries,$solvedstatus) = @_;
       my %decrement = (
                           attempts => 0,
                           users => 0,
                           correct => 0
                       );
       $decrement{'attempts'} = $aggtries;
       if ($solvedstatus =~ /^correct/) {
           $decrement{'correct'} = 1;
       }
       if ($aggtries == $totaltries) {
           $decrement{'users'} = 1;
       }
       foreach my $type (keys(%decrement)) {
           $$aggregate{$symb."\0".$part."\0".$type} = -$decrement{$type};
       }
       return;
   }
   
   # ----------- Determine timestamps for last reset of aggregate totals for parts  
   sub get_last_resets {
       my ($symb,$courseid,$partids) =@_;
       my %last_resets;
       my $cdom = $env{'course.'.$courseid.'.domain'};
       my $cname = $env{'course.'.$courseid.'.num'};
       my @keys;
       foreach my $part (@{$partids}) {
    push(@keys,"$symb\0$part\0resettime");
       }
       my %results=&Apache::lonnet::get('nohist_resourcetracker',\@keys,
        $cdom,$cname);
       foreach my $part (@{$partids}) {
    $last_resets{$part}=$results{"$symb\0$part\0resettime"};
       }
       return %last_resets;
   }
   
   # ----------- Handles creating versions for portfolio files as answers
   sub version_portfiles {
       my ($record, $parts_graded, $courseid, $symb, $domain, $stu_name, $v_flag) = @_;
       my $version_parts = join('|',@$v_flag);
       my @returned_keys;
       my $parts = join('|', @$parts_graded);
       foreach my $key (keys(%$record)) {
           my $new_portfiles;
           if ($key =~ /^resource\.($version_parts)\./ && $key =~ /\.portfiles$/ ) {
               my @versioned_portfiles;
               my @portfiles = split(/\s*,\s*/,$$record{$key});
               if (@portfiles) {
                   &Apache::lonnet::portfiles_versioning($symb,$domain,$stu_name,\@portfiles,
                                                         \@versioned_portfiles);
               }
               $$record{$key} = join(',',@versioned_portfiles);
               push(@returned_keys,$key);
           }
       } 
       return (@returned_keys);   
 }  }
   
 #--------------------------------------------------------------------------------------  #--------------------------------------------------------------------------------------
Line 1420  sub saveHandGrade { Line 3809  sub saveHandGrade {
 sub viewgrades_js {  sub viewgrades_js {
     my ($request) = shift;      my ($request) = shift;
   
     $request->print(<<VIEWJAVASCRIPT);      my $alertmsg = &mt('A number equal or greater than 0 is expected. Entered value = ');
 <script type="text/javascript" language="javascript">      &js_escape(\$alertmsg);
       $request->print(&Apache::lonhtmlcommon::scripttag(<<VIEWJAVASCRIPT));
    function writePoint(partid,weight,point) {     function writePoint(partid,weight,point) {
  var radioButton = eval("document.classgrade.RADVAL_"+partid);   var radioButton = document.classgrade["RADVAL_"+partid];
  var textbox = eval("document.classgrade.TEXTVAL_"+partid);   var textbox = document.classgrade["TEXTVAL_"+partid];
  if (point == "textval") {   if (point == "textval") {
     var point = eval("document.classgrade.TEXTVAL_"+partid+".value");      point = document.classgrade["TEXTVAL_"+partid].value;
     if (isNaN(point) || point < 0) {      if (isNaN(point) || parseFloat(point) < 0) {
  alert("A number equal or greater than 0 is expected. Entered value = "+point);   alert("$alertmsg"+parseFloat(point));
  var resetbox = false;   var resetbox = false;
  for (var i=0; i<radioButton.length; i++) {   for (var i=0; i<radioButton.length; i++) {
     if (radioButton[i].checked) {      if (radioButton[i].checked) {
Line 1441  sub viewgrades_js { Line 3831  sub viewgrades_js {
  }   }
  return;   return;
     }      }
     if (point > weight) {      if (parseFloat(point) > parseFloat(weight)) {
  var resp = confirm("You entered a value ("+point+   var resp = confirm("You entered a value ("+parseFloat(point)+
    ") greater than the weight for the part. Accept?");     ") greater than the weight for the part. Accept?");
  if (resp == false) {   if (resp == false) {
     textbox.value = "";      textbox.value = "";
Line 1451  sub viewgrades_js { Line 3841  sub viewgrades_js {
     }      }
     for (var i=0; i<radioButton.length; i++) {      for (var i=0; i<radioButton.length; i++) {
  radioButton[i].checked=false;   radioButton[i].checked=false;
  if (point == i) {   if (parseFloat(point) == i) {
     radioButton[i].checked=true;      radioButton[i].checked=true;
  }   }
     }      }
   
  } else {   } else {
     textbox.value = point;      textbox.value = parseFloat(point);
  }   }
  for (i=0;i<document.classgrade.total.value;i++) {   for (i=0;i<document.classgrade.total.value;i++) {
     var user = eval("document.classgrade.ctr"+i+".value");      var user = document.classgrade["ctr"+i].value;
     var scorename = eval("document.classgrade.GD_"+user+      user = user.replace(new RegExp(':', 'g'),"_");
  "_"+partid+"_awarded");      var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
     var saveval   = eval("document.classgrade.GD_"+user+      var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
  "_"+partid+"_solved_s.value");      var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
     var selname   = eval("document.classgrade.GD_"+user+"_"+partid+"_solved");  
     if (saveval != "correct") {      if (saveval != "correct") {
  scorename.value = point;   scorename.value = point;
  if (selname[0].selected != true) {   if (selname[0].selected != true) {
Line 1473  sub viewgrades_js { Line 3862  sub viewgrades_js {
  }   }
     }      }
  }   }
  var selval   = eval("document.classgrade.SELVAL_"+partid);   document.classgrade["SELVAL_"+partid][0].selected = true;
  selval[0].selected = true;  
     }      }
   
     function writeRadText(partid,weight) {      function writeRadText(partid,weight) {
  var selval   = eval("document.classgrade.SELVAL_"+partid);   var selval   = document.classgrade["SELVAL_"+partid];
  var radioButton = eval("document.classgrade.RADVAL_"+partid);   var radioButton = document.classgrade["RADVAL_"+partid];
  var textbox = eval("document.classgrade.TEXTVAL_"+partid);          var override = document.classgrade["FORCE_"+partid].checked;
  if (selval[1].selected) {   var textbox = document.classgrade["TEXTVAL_"+partid];
    if (selval[1].selected || selval[2].selected) {
     for (var i=0; i<radioButton.length; i++) {      for (var i=0; i<radioButton.length; i++) {
  radioButton[i].checked=false;   radioButton[i].checked=false;
   
Line 1489  sub viewgrades_js { Line 3878  sub viewgrades_js {
     textbox.value = "";      textbox.value = "";
   
     for (i=0;i<document.classgrade.total.value;i++) {      for (i=0;i<document.classgrade.total.value;i++) {
  var user = eval("document.classgrade.ctr"+i+".value");   var user = document.classgrade["ctr"+i].value;
  var scorename = eval("document.classgrade.GD_"+user+   user = user.replace(new RegExp(':', 'g'),"_");
      "_"+partid+"_awarded");   var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
  var saveval   = eval("document.classgrade.GD_"+user+   var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
      "_"+partid+"_solved_s.value");   var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
  var selname   = eval("document.classgrade.GD_"+user+   if ((saveval != "correct") || override) {
      "_"+partid+"_solved");  
  if (saveval != "correct") {  
     scorename.value = "";      scorename.value = "";
     selname[1].selected = true;      if (selval[1].selected) {
    selname[1].selected = true;
       } else {
    selname[2].selected = true;
    if (Number(document.classgrade["GD_"+user+"_"+partid+"_tries"].value)) 
    {document.classgrade["GD_"+user+"_"+partid+"_tries"].value = '0';}
       }
  }   }
     }      }
  } else {   } else {
     for (i=0;i<document.classgrade.total.value;i++) {      for (i=0;i<document.classgrade.total.value;i++) {
  var user = eval("document.classgrade.ctr"+i+".value");   var user = document.classgrade["ctr"+i].value;
  var scorename = eval("document.classgrade.GD_"+user+   user = user.replace(new RegExp(':', 'g'),"_");
      "_"+partid+"_awarded");   var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
  var saveval   = eval("document.classgrade.GD_"+user+   var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
      "_"+partid+"_solved_s.value");   var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
  var selname   = eval("document.classgrade.GD_"+user+   if ((saveval != "correct") || override) {
      "_"+partid+"_solved");      scorename.value = document.classgrade["GD_"+user+"_"+partid+"_awarded_s"].value;
  if (saveval != "correct") {  
     scorename.value = eval("document.classgrade.GD_"+user+  
      "_"+partid+"_awarded_s.value");;  
     selname[0].selected = true;      selname[0].selected = true;
  }   }
     }      }
Line 1520  sub viewgrades_js { Line 3910  sub viewgrades_js {
     }      }
   
     function changeSelect(partid,user) {      function changeSelect(partid,user) {
  var selval = eval("document.classgrade.GD_"+user+'_'+partid+"_solved");   var selval = document.classgrade["GD_"+user+'_'+partid+"_solved"];
  var textbox = eval("document.classgrade.GD_"+user+'_'+partid+"_awarded");   var textbox = document.classgrade["GD_"+user+'_'+partid+"_awarded"];
  var point  = textbox.value;   var point  = textbox.value;
  var weight = eval("document.classgrade.weight_"+partid+".value");   var weight = document.classgrade["weight_"+partid].value;
   
  if (isNaN(point) || point < 0) {   if (isNaN(point) || parseFloat(point) < 0) {
     alert("A number equal or greater than 0 is expected. Entered value = "+point);      alert("$alertmsg"+parseFloat(point));
     textbox.value = "";      textbox.value = "";
     return;      return;
  }   }
  if (point > weight) {   if (parseFloat(point) > parseFloat(weight)) {
     var resp = confirm("You entered a value ("+point+      var resp = confirm("You entered a value ("+parseFloat(point)+
        ") greater than the weight of the part. Accept?");         ") greater than the weight of the part. Accept?");
     if (resp == false) {      if (resp == false) {
  textbox.value = "";   textbox.value = "";
Line 1542  sub viewgrades_js { Line 3932  sub viewgrades_js {
     }      }
   
     function changeOneScore(partid,user) {      function changeOneScore(partid,user) {
  var selval = eval("document.classgrade.GD_"+user+'_'+partid+"_solved");   var selval = document.classgrade["GD_"+user+'_'+partid+"_solved"];
  if (selval[1].selected) {   if (selval[1].selected || selval[2].selected) {
     var boxval = eval("document.classgrade.GD_"+user+'_'+partid+"_awarded");      document.classgrade["GD_"+user+'_'+partid+"_awarded"].value = "";
     boxval.value = "";      if (selval[2].selected) {
  }   document.classgrade["GD_"+user+'_'+partid+"_tries"].value = "0";
       }
           }
     }      }
   
     function resetEntry(numpart) {      function resetEntry(numpart) {
  for (ctpart=0;ctpart<numpart;ctpart++) {   for (ctpart=0;ctpart<numpart;ctpart++) {
     var partid = eval("document.classgrade.partid_"+ctpart+".value");      var partid = document.classgrade["partid_"+ctpart].value;
     var radioButton = eval("document.classgrade.RADVAL_"+partid);      var radioButton = document.classgrade["RADVAL_"+partid];
     var textbox = eval("document.classgrade.TEXTVAL_"+partid);      var textbox = document.classgrade["TEXTVAL_"+partid];
     var selval  = eval("document.classgrade.SELVAL_"+partid);      var selval  = document.classgrade["SELVAL_"+partid];
     for (var i=0; i<radioButton.length; i++) {      for (var i=0; i<radioButton.length; i++) {
  radioButton[i].checked=false;   radioButton[i].checked=false;
   
Line 1563  sub viewgrades_js { Line 3955  sub viewgrades_js {
     selval[0].selected = true;      selval[0].selected = true;
   
     for (i=0;i<document.classgrade.total.value;i++) {      for (i=0;i<document.classgrade.total.value;i++) {
  var user = eval("document.classgrade.ctr"+i+".value");   var user = document.classgrade["ctr"+i].value;
  var resetscore = eval("document.classgrade.GD_"+user+   user = user.replace(new RegExp(':', 'g'),"_");
       "_"+partid+"_awarded");   var resetscore = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
  resetscore.value = eval("document.classgrade.GD_"+user+   resetscore.value = document.classgrade["GD_"+user+"_"+partid+"_awarded_s"].value;
  "_"+partid+"_awarded_s.value");   var resettries = document.classgrade["GD_"+user+"_"+partid+"_tries"];
    resettries.value = document.classgrade["GD_"+user+"_"+partid+"_tries_s"].value;
  var saveselval   = eval("document.classgrade.GD_"+user+   var saveselval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
      "_"+partid+"_solved_s.value");   var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
   
  var selname   = eval("document.classgrade.GD_"+user+"_"+partid+"_solved");  
  if (saveselval == "excused") {   if (saveselval == "excused") {
     if (selname[1].selected == false) { selname[1].selected = true;}      if (selname[1].selected == false) { selname[1].selected = true;}
  } else {   } else {
Line 1582  sub viewgrades_js { Line 3972  sub viewgrades_js {
  }   }
     }      }
   
 </script>  
 VIEWJAVASCRIPT  VIEWJAVASCRIPT
 }  }
   
 #--- show scores for a section or whole class w/ option to change/update a score  #--- show scores for a section or whole class w/ option to change/update a score
 sub viewgrades {  sub viewgrades {
     my ($request) = shift;      my ($request,$symb) = @_;
       my ($is_tool,$toolsymb);
       if ($symb =~ /ext\.tool$/) {
           $is_tool = 1;
           $toolsymb = $symb;
       }
     &viewgrades_js($request);      &viewgrades_js($request);
   
     my ($symb,$url) = ($ENV{'form.symb'},$ENV{'form.url'});       #need to make sure we have the correct data for later EXT calls, 
     my $result='<h3><font color="#339933">Manual Grading</font></h3>';      #thus invalidate the cache
       &Apache::lonnet::devalidatecourseresdata(
                    $env{'course.'.$env{'request.course.id'}.'.num'},
                    $env{'course.'.$env{'request.course.id'}.'.domain'});
       &Apache::lonnet::clear_EXT_cache_status();
   
     $result.='<font size=+1><b>Resource: </b>'.$ENV{'form.url'}.'</font>'."\n";      my $result='<h3><span class="LC_info">'.&mt('Manual Grading').'</span></h3>';
   
     #view individual student submission form - called using Javascript viewOneStudent      #view individual student submission form - called using Javascript viewOneStudent
     $result.=&jscriptNform($url,$symb);      $result.=&jscriptNform($symb);
   
     #beginning of class grading form      #beginning of class grading form
       my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
     $result.= '<form action="/adm/grades" method="post" name="classgrade">'."\n".      $result.= '<form action="/adm/grades" method="post" name="classgrade">'."\n".
  '<input type="hidden" name="symb"    value="'.$symb.'" />'."\n".   '<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
  '<input type="hidden" name="url"     value="'.$url.'" />'."\n".  
  '<input type="hidden" name="command" value="editgrades" />'."\n".   '<input type="hidden" name="command" value="editgrades" />'."\n".
  '<input type="hidden" name="section" value="'.$ENV{'form.section'}.'" />'."\n";   &build_section_inputs().
     $result.='<h3>Assign Common Grade To ';   '<input type="hidden" name="Status" value="'.$env{'stu_status'}.'" />'."\n".
     if ($ENV{'form.section'} eq 'all') {  
  $result.='Class </h3>';      #retrieve selected groups
     } elsif ($ENV{'form.section'} eq 'no') {      my (@groups,$group_display);
  $result.='Students in no Section </h3>';      @groups = &Apache::loncommon::get_env_multiple('form.group');
     } else {      if (grep(/^all$/,@groups)) {
  $result.='Students in Section '.$ENV{'form.section'}.'</h3>';          @groups = ('all');
     }      } elsif (grep(/^none$/,@groups)) {
     $result.= '<table border=0><tr><td bgcolor="#777777">'."\n".          @groups = ('none');
  '<table border=0><tr bgcolor="#ffffdd"><td>';      } elsif (@groups > 0) {
 #    $result.='To assign the same score for all the students use the radio buttons or '.          $group_display = join(', ',@groups);
 # 'text box below. To assign scores individually fill in the score boxes for '.      }
 # 'each student in the table below. <font color="red">A part that has already '.  
 # 'been graded does not get changed using the radio buttons or text box. '.      my ($common_header,$specific_header,@sections,$section_display);
 # 'If needed, it has to be changed individually.</font>';      if ($env{'request.course.sec'} ne '') {
 #    $result.='</td></tr><tr><td>';          @sections = ($env{'request.course.sec'});
       } else {
           @sections = &Apache::loncommon::get_env_multiple('form.section');
       }
   
   # Check if Save button should be usable
       my $disabled = ' disabled="disabled"';
       if ($perm{'mgr'}) {
           if (grep(/^all$/,@sections)) {
               undef($disabled);
           } else {
               foreach my $sec (@sections) {
                   if (&canmodify($sec)) {
                       undef($disabled);
                       last;
                   }
               }
           }
       }
       if (grep(/^all$/,@sections)) {
           @sections = ('all');
           if ($group_display) {
               $common_header = &mt('Assign Common Grade to Students in Group(s) [_1]',$group_display);
               $specific_header = &mt('Assign Grade to Specific Students in Group(s) [_1]',$group_display);
           } elsif (grep(/^none$/,@groups)) {
               $common_header = &mt('Assign Common Grade to Students not assigned to any groups');
               $specific_header = &mt('Assign Grade to Specific Students not assigned to any groups');
           } else {
       $common_header = &mt('Assign Common Grade to Class');
               $specific_header = &mt('Assign Grade to Specific Students in Class');
           }
       } elsif (grep(/^none$/,@sections)) {
           @sections = ('none');
           if ($group_display) {
               $common_header = &mt('Assign Common Grade to Students in no Section and in Group(s) [_1]',$group_display);
               $specific_header = &mt('Assign Grade to Specific Students in no Section and in Group(s)',$group_display);
           } elsif (grep(/^none$/,@groups)) {
               $common_header = &mt('Assign Common Grade to Students in no Section and in no Group');
               $specific_header = &mt('Assign Grade to Specific Students in no Section and in no Group');
           } else {
               $common_header = &mt('Assign Common Grade to Students in no Section');
       $specific_header = &mt('Assign Grade to Specific Students in no Section');
           }
       } else {
           $section_display = join (", ",@sections);
           if ($group_display) {
               $common_header = &mt('Assign Common Grade to Students in Section(s) [_1], and in Group(s) [_2]',
                                    $section_display,$group_display);
               $specific_header = &mt('Assign Grade to Specific Students in Section(s) [_1], and in Group(s) [_2]',
                                      $section_display,$group_display);
           } elsif (grep(/^none$/,@groups)) {
               $common_header = &mt('Assign Common Grade to Students in Section(s) [_1] and no Group',$section_display);
               $specific_header = &mt('Assign Grade to Specific Students in Section(s) [_1] and no Group',$section_display);
           } else {
               $common_header = &mt('Assign Common Grade to Students in Section(s) [_1]',$section_display);
       $specific_header = &mt('Assign Grade to Specific Students in Section(s) [_1]',$section_display);
           }
       }
       my %submit_types = &substatus_options();
       my $submission_status = $submit_types{$env{'form.submitonly'}};
   
       if ($env{'form.submitonly'} eq 'all') {
           $result.= '<h3>'.$common_header.'</h3>';
       } else {
           my $text;
           if ($is_tool) {
               $text = &mt('(transaction status: "[_1]")',$submission_status);
           } else {
               $text = &mt('(submission status: "[_1]")',$submission_status);
           }
           $result.= '<h3>'.$common_header.'&nbsp;'.$text.'</h3>';
       }
       $result .= &Apache::loncommon::start_data_table();
     #radio buttons/text box for assigning points for a section or class.      #radio buttons/text box for assigning points for a section or class.
     #handles different parts of a problem      #handles different parts of a problem
     my ($partlist,$handgrade) = &response_type($ENV{'form.url'});      my $res_error;
       my ($partlist,$handgrade,$responseType) = &response_type($symb,\$res_error);
       if ($res_error) {
           return &navmap_errormsg();
       }
     my %weight = ();      my %weight = ();
     my $ctsparts = 0;      my $ctsparts = 0;
     $result.='<table border="0">';  
     my %seen = ();      my %seen = ();
     for (sort keys(%$handgrade)) {      my @part_response_id;
  my ($partid,$respid) = split (/_/,$_,2);      if ($is_tool) {
           @part_response_id = ([0,'']);
       } else {
           @part_response_id = &flatten_responseType($responseType);
       }
       foreach my $part_response_id (@part_response_id) {
       my ($partid,$respid) = @{ $part_response_id };
    my $part_resp = join('_',@{ $part_response_id });
  next if $seen{$partid};   next if $seen{$partid};
  $seen{$partid}++;   $seen{$partid}++;
  my ($responsetype,$handgrade)=split(/:/,$$handgrade{$_});  
  my $wgt = &Apache::lonnet::EXT('resource.'.$partid.'.weight',$symb);   my $wgt = &Apache::lonnet::EXT('resource.'.$partid.'.weight',$symb);
  $weight{$partid} = $wgt eq '' ? '1' : $wgt;   $weight{$partid} = $wgt eq '' ? '1' : $wgt;
   
  $result.='<input type="hidden" name="partid_'.   my $display_part=&get_display_part($partid,$symb);
     $ctsparts.'" value="'.$partid.'" />'."\n";   my $radio.='<table border="0"><tr>';  
  $result.='<input type="hidden" name="weight_'.  
     $partid.'" value="'.$weight{$partid}.'" />'."\n";  
  $result.='<tr><td><b>Part  '.$partid.'&nbsp; &nbsp;Point:</b> </td><td>';  
  $result.='<table border="0"><tr>';    
  my $ctr = 0;   my $ctr = 0;
  while ($ctr<=$weight{$partid}) { # display radio buttons in a nice table 10 across   while ($ctr<=$weight{$partid}) { # display radio buttons in a nice table 10 across
     $result.= '<td><input type="radio" name="RADVAL_'.$partid.'" '.      $radio.= '<td><label><input type="radio" name="RADVAL_'.$partid.'" '.
  'onclick="javascript:writePoint(\''.$partid.'\','.$weight{$partid}.   'onclick="javascript:writePoint(\''.$partid.'\','.$weight{$partid}.
  ','.$ctr.')" />'.$ctr."</td>\n";   ','.$ctr.')" />'.$ctr."</label></td>\n";
     $result.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');      $result.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');
     $ctr++;      $ctr++;
  }   }
  $result.='</tr></table>';   $radio.='</tr></table>';
  $result.= '</td><td><b> or </b><input type="text" name="TEXTVAL_'.   my $line = '<input type="text" name="TEXTVAL_'.
     $partid.'" size="4" '.'onChange="javascript:writePoint(\''.      $partid.'" size="4" '.'onchange="javascript:writePoint(\''.
  $partid.'\','.$weight{$partid}.',\'textval\')" /> /'.   $partid.'\','.$weight{$partid}.',\'textval\')" /> /'.
     $weight{$partid}.' (problem weight)</td>'."\n";      $weight{$partid}.' '.&mt('(problem weight)').'</td>'."\n";
  $result.= '</td><td><select name="SELVAL_'.$partid.'"'.          $line.= '<td><b>'.&mt('Grade Status').':</b>'.
     'onChange="javascript:writeRadText(\''.$partid.'\','.              '<select name="SELVAL_'.$partid.'" '.
  $weight{$partid}.')"> '.              'onchange="javascript:writeRadText(\''.$partid.'\','.
     '<option selected="on"> </option>'.                  $weight{$partid}.')"> '.
     '<option>excused</option></select></td></tr>'."\n";      '<option selected="selected"> </option>'.
       '<option value="excused">'.&mt('excused').'</option>'.
       '<option value="reset status">'.&mt('reset status').'</option>'.
       '</select></td>'.
               '<td><label><input type="checkbox" name="FORCE_'.$partid.'" />'.&mt('Override "Correct"').'</label>';
    $line.='<input type="hidden" name="partid_'.
       $ctsparts.'" value="'.$partid.'" />'."\n";
    $line.='<input type="hidden" name="weight_'.
       $partid.'" value="'.$weight{$partid}.'" />'."\n";
   
    $result.=
       &Apache::loncommon::start_data_table_row()."\n".
       '<td><b>'.&mt('Part:').'</b></td><td>'.$display_part.'</td><td><b>'.&mt('Points:').'</b></td><td>'.$radio.'</td><td>'.&mt('or').'</td><td>'.$line.'</td>'.
       &Apache::loncommon::end_data_table_row()."\n";
  $ctsparts++;   $ctsparts++;
     }      }
     $result.='</table>'.'</td></tr></table>'.'</td></tr></table>'."\n".      $result.=&Apache::loncommon::end_data_table()."\n".
  '<input type="hidden" name="totalparts" value="'.$ctsparts.'" />';   '<input type="hidden" name="totalparts" value="'.$ctsparts.'" />';
     $result.='<input type="button" value="Reset" '.      $result.='<input type="button" value="'.&mt('Revert to Default').'" '.
  'onClick="javascript:resetEntry('.$ctsparts.');" TARGET=_self> &nbsp; &nbsp;';   'onclick="javascript:resetEntry('.$ctsparts.');" />';
     $result.='<input type="button" value="Submit Changes" '.  
  'onClick="javascript:submit();" TARGET=_self />'."\n";  
   
     #table listing all the students in a section/class      #table listing all the students in a section/class
     #header of table      #header of table
     $result.= '<h3>Assign Grade to Specific Students in ';      if ($env{'form.submitonly'} eq 'all') {
     if ($ENV{'form.section'} eq 'all') {          $result.= '<h3>'.$specific_header.'</h3>';
  $result.='the Class </h3>';      } else {
     } elsif ($ENV{'form.section'} eq 'no') {          my $text;
  $result.='no Section </h3>';          if ($is_tool) {
     } else {              $text = &mt('(transaction status: "[_1]")',$submission_status);
  $result.='Section '.$ENV{'form.section'}.'</h3>';          } else {
     }              $text = &mt('(submission status: "[_1]")',$submission_status);
     $result.= '<table border=0><tr><td bgcolor="#777777">'."\n".          }
  '<table border=0><tr bgcolor="#deffff">'.          $result.= '<h3>'.$specific_header.'&nbsp;'.$text.'</h3>';
  '<td><b>Fullname</b></td><td><b>Username</b></td><td><b>Domain</b></td>'."\n";      }
     my (@parts) = sort(&getpartlist($url));      $result.= &Apache::loncommon::start_data_table().
         &Apache::loncommon::start_data_table_header_row().
         '<th>'.&mt('No.').'</th>'.
         '<th>'.&nameUserString('header')."</th>\n";
       my $partserror;
       my (@parts) = sort(&getpartlist($symb,\$partserror));
       if ($partserror) {
           return &navmap_errormsg();
       }
       my (undef,undef,$url)=&Apache::lonnet::decode_symb($symb);
       my @partids = ();
     foreach my $part (@parts) {      foreach my $part (@parts) {
  my $display=&Apache::lonnet::metadata($url,$part.'.display');   my $display=&Apache::lonnet::metadata($url,$part.'.display',$toolsymb);
  if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name'); }          my $narrowtext = &mt('Tries');
    $display =~ s|^Number of Attempts|$narrowtext <br />|; # makes the column narrower
    if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name',$toolsymb); }
    my ($partid) = &split_part_type($part);
           push(@partids,$partid);
   #
   # FIXME: Looks like $display looks at English text
   #
    my $display_part=&get_display_part($partid,$symb);
  if ($display =~ /^Partial Credit Factor/) {   if ($display =~ /^Partial Credit Factor/) {
     my ($partid) = &split_part_type($part);      $result.='<th>'.
     $result.='<td><b>Score Part '.$partid.'<br />(weight = '.   &mt('Score Part: [_1][_2](weight = [_3])',
  $weight{$partid}.')</b></td>'."\n";      $display_part,'<br />',$weight{$partid}).'</th>'."\n";
     next;      next;
       
    } else {
       if ($display =~ /Problem Status/) {
    my $grade_status_mt = &mt('Grade Status');
    $display =~ s{Problem Status}{$grade_status_mt<br />};
       }
       my $part_mt = &mt('Part:');
       $display =~s{\[Part: \Q$partid\E\]}{$part_mt $display_part};
  }   }
  $display =~ s|Problem Status|Grade Status<br />|;  
  $result.='<td><b>'.$display.'</b></td>'."\n";   $result.='<th>'.$display.'</th>'."\n";
     }      }
     $result.='</tr>';      $result.=&Apache::loncommon::end_data_table_header_row();
   
       my %last_resets = 
    &get_last_resets($symb,$env{'request.course.id'},\@partids);
   
     #get info for each student      #get info for each student
     #list all the students - with points and grade status      #list all the students - with points and grade status
     my (undef,undef,$fullname) = &getclasslist($ENV{'form.section'},'0');      my (undef,undef,$fullname) = &getclasslist(\@sections,'1',\@groups);
     my $ctr = 0;      my $ctr = 0;
     foreach (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {      foreach (sort 
  my ($uname,$udom) = split(/:/);       {
  $result.='<input type="hidden" name="ctr'.$ctr.'" value="'.$uname.'" />'."\n";   if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
  $result.=&viewstudentgrade($url,$symb,$ENV{'request.course.id'},       return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
    $_,$$fullname{$_},\@parts,\%weight);   }
  $ctr++;   return $a cmp $b;
        } (keys(%$fullname))) {
    $result.=&viewstudentgrade($symb,$env{'request.course.id'},
      $_,$$fullname{$_},\@parts,\%weight,\$ctr,\%last_resets,$is_tool);
     }      }
     $result.='</table></td></tr></table>';      $result.=&Apache::loncommon::end_data_table();
     $result.='<input type="hidden" name="total" value="'.$ctr.'" />'."\n";      $result.='<input type="hidden" name="total" value="'.$ctr.'" />'."\n";
     $result.='<input type="button" value="Submit Changes" '.      $result.='<input type="button" value="'.&mt('Save').'"'.$disabled.' '.
  'onClick="javascript:submit();" TARGET=_self /></form>'."\n";   'onclick="javascript:submit();" target="_self" /></form>'."\n";
     $result.=&show_grading_menu_form($symb,$url);      if ($ctr == 0) {
           my $stu_status = join(' or ',&Apache::loncommon::get_env_multiple('form.Status'));
           $result='<h3><span class="LC_info">'.&mt('Manual Grading').'</span></h3>'.
                   '<span class="LC_warning">';
           if ($env{'form.submitonly'} eq 'all') {
               if (grep(/^all$/,@sections)) {
                   if (grep(/^all$/,@groups)) {
                       $result .= &mt('There are no students with enrollment status [_1] to modify or grade.',
                                      $stu_status);
                   } elsif (grep(/^none$/,@groups)) {
                       $result .= &mt('There are no students with no group assigned and with enrollment status [_1] to modify or grade.',
                                      $stu_status); 
                   } else {
                       $result .= &mt('There are no students in group(s) [_1] with enrollment status [_2] to modify or grade.',
                                      $group_display,$stu_status);
                   }
               } elsif (grep(/^none$/,@sections)) {
                   if (grep(/^all$/,@groups)) {
                       $result .= &mt('There are no students in no section with enrollment status [_1] to modify or grade.',
                                      $stu_status);
                   } elsif (grep(/^none$/,@groups)) {
                       $result .= &mt('There are no students in no section and no group with enrollment status [_1] to modify or grade.',
                                      $stu_status);
                   } else {
                       $result .= &mt('There are no students in no section in group(s) [_1] with enrollment status [_2] to modify or grade.',
                                      $group_display,$stu_status);
                   }
               } else {
                   if (grep(/^all$/,@groups)) {
                       $result .= &mt('There are no students in section(s) [_1] with enrollment status [_2] to modify or grade.',
                                      $section_display,$stu_status);
                   } elsif (grep(/^none$/,@groups)) {
                       $result .= &mt('There are no students in section(s) [_1] and no group with enrollment status [_2] to modify or grade.',
                                      $section_display,$stu_status);
                   } else {
                       $result .= &mt('There are no students in section(s) [_1] and group(s) [_2] with enrollment status [_3] to modify or grade.',
                                      $section_display,$group_display,$stu_status);
                   }
               }
           } else {
               if (grep(/^all$/,@sections)) {
                   if (grep(/^all$/,@groups)) {
                       $result .= &mt('There are no students with enrollment status [_1] and submission status "[_2]" to modify or grade.',
                                      $stu_status,$submission_status);
                   } elsif (grep(/^none$/,@groups)) {
                       $result .= &mt('There are no students with no group assigned with enrollment status [_1] and submission status "[_2]" to modify or grade.',
                                      $stu_status,$submission_status);
                   } else {
                       $result .= &mt('There are no students in group(s) [_1] with enrollment status [_2] and submission status "[_3]" to modify or grade.',
                                      $group_display,$stu_status,$submission_status);
                   }
               } elsif (grep(/^none$/,@sections)) {
                   if (grep(/^all$/,@groups)) {
                       $result .= &mt('There are no students in no section with enrollment status [_1] and submission status "[_2]" to modify or grade.',
                                      $stu_status,$submission_status);
                   } elsif (grep(/^none$/,@groups)) {
                       $result .= &mt('There are no students in no section and no group with enrollment status [_1] and submission status "[_2]" to modify or grade.',
                                      $stu_status,$submission_status);
                   } else {
                       $result .= &mt('There are no students in no section in group(s) [_1] with enrollment status [_2] and submission status "[_3]" to modify or grade.',
                                      $group_display,$stu_status,$submission_status);
                   }
               } else {
                   if (grep(/^all$/,@groups)) {
               $result .= &mt('There are no students in section(s) [_1] with enrollment status [_2] and submission status "[_3]" to modify or grade.',
                              $section_display,$stu_status,$submission_status);
                   } elsif (grep(/^none$/,@groups)) {
                       $result .= &mt('There are no students in section(s) [_1] and no group with enrollment status [_2] and submission status "[_3]" to modify or grade.',
                                      $section_display,$stu_status,$submission_status);
                   } else {
                       $result .= &mt('There are no students in section(s) [_1] and group(s) [_2] with enrollment status [_3] and submission status "[_4]" to modify or grade.',
                                      $section_display,$group_display,$stu_status,$submission_status);
                   }
               }
           }
    $result .= '</span><br />';
       }
     return $result;      return $result;
 }  }
   
 #--- call by previous routine to display each student  #--- call by previous routine to display each student who satisfies submission filter. 
 sub viewstudentgrade {  sub viewstudentgrade {
     my ($url,$symb,$courseid,$student,$fullname,$parts,$weight) = @_;      my ($symb,$courseid,$student,$fullname,$parts,$weight,$ctr,$last_resets,$is_tool) = @_;
     my ($uname,$udom) = split(/:/,$student);      my ($uname,$udom) = split(/:/,$student);
     my %record=&Apache::lonnet::restore($symb,$courseid,$udom,$uname);      my %record=&Apache::lonnet::restore($symb,$courseid,$udom,$uname);
     my $result='<tr bgcolor="#ffffdd"><td>'.      my $submitonly = $env{'form.submitonly'};
       unless (($submitonly eq 'all') || ($submitonly eq 'queued')) {
           my %partstatus = ();
           if (ref($parts) eq 'ARRAY') {
               foreach my $apart (@{$parts}) {
                   my ($part,$type) = &split_part_type($apart);
                   my ($status,undef) = split(/_/,$record{"resource.$part.solved"},2);
                   $status = 'nothing' if ($status eq '');
                   $partstatus{$part}      = $status;
                   my $subkey = "resource.$part.submitted_by";
                   $partstatus{$subkey} = $record{$subkey} if ($record{$subkey} ne '');
               }
               my $submitted = 0;
               my $graded = 0;
               my $incorrect = 0;
               foreach my $key (keys(%partstatus)) {
                   $submitted = 1 if ($partstatus{$key} ne 'nothing');
                   $graded = 1 if ($partstatus{$key} =~ /^ungraded/);
                   $incorrect = 1 if ($partstatus{$key} =~ /^incorrect/);
   
                   my $partid = (split(/\./,$key))[1];
                   if ($partstatus{'resource.'.$partid.'.'.$key.'.submitted_by'} ne '') {
                       $submitted = 0;
                   }
               }
               return if (!$submitted && ($submitonly eq 'yes' ||
                                          $submitonly eq 'incorrect' ||
                                          $submitonly eq 'graded'));
               return if (!$graded && ($submitonly eq 'graded'));
               return if (!$incorrect && $submitonly eq 'incorrect');
           }
       }
       if ($submitonly eq 'queued') {
           my ($cdom,$cnum) = split(/_/,$courseid);
           my %queue_status =
               &Apache::bridgetask::get_student_status($symb,$cdom,$cnum,
                                                       $udom,$uname);
           return if (!defined($queue_status{'gradingqueue'}));
       }
       $$ctr++;
       my %aggregates = ();
       my $result=&Apache::loncommon::start_data_table_row().'<td align="right">'.
    '<input type="hidden" name="ctr'.($$ctr-1).'" value="'.$student.'" />'.
    "\n".$$ctr.'&nbsp;</td><td>&nbsp;'.
  '<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.   '<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
  '\')"; TARGET=_self>'.$fullname.'</a>'.   '\');" target="_self">'.$fullname.'</a> '.
  '</td><td>'.$uname.'</td><td align="middle">'.$udom.'</td>'."\n";   '<span class="LC_internal_info">('.$uname.($env{'user.domain'} eq $udom ? '' : ':'.$udom).')</span></td>'."\n";
     foreach my $part (@$parts) {      $student=~s/:/_/; # colon doen't work in javascript for names
  my ($part,$type) = &split_part_type($part);      foreach my $apart (@$parts) {
    my ($part,$type) = &split_part_type($apart);
  my $score=$record{"resource.$part.$type"};   my $score=$record{"resource.$part.$type"};
           $result.='<td align="center">';
           my ($aggtries,$totaltries);
           unless (exists($aggregates{$part})) {
       $totaltries = $record{'resource.'.$part.'.tries'};
       $aggtries = $totaltries;
               if ($$last_resets{$part}) {  
                   $aggtries = &get_num_tries(\%record,$$last_resets{$part},
      $part);
               }
               $result.='<input type="hidden" name="'.
                   'GD_'.$student.'_'.$part.'_aggtries" value="'.$aggtries.'" />'."\n";
               $result.='<input type="hidden" name="'.
                   'GD_'.$student.'_'.$part.'_totaltries" value="'.$totaltries.'" />'."\n";
               $aggregates{$part} = 1;
           }
  if ($type eq 'awarded') {   if ($type eq 'awarded') {
     my $pts = $score eq '' ? '' : $score*$$weight{$part};      my $pts = $score eq '' ? '' : &compute_points($score,$$weight{$part});
     $result.='<input type="hidden" name="'.      $result.='<input type="hidden" name="'.
  'GD_'.$uname.'_'.$part.'_awarded_s" value="'.$pts.'" />'."\n";   'GD_'.$student.'_'.$part.'_awarded_s" value="'.$pts.'" />'."\n";
     $result.='<td align="middle"><input type="text" name="'.      $result.='<input type="text" name="'.
  'GD_'.$uname.'_'.$part.'_awarded" '.   'GD_'.$student.'_'.$part.'_awarded" '.
  'onChange="javascript:changeSelect(\''.$part.'\',\''.$uname.                  'onchange="javascript:changeSelect(\''.$part.'\',\''.$student.
  '\')" value="'.$pts.'" size="4" /></td>'."\n";   '\')" value="'.$pts.'" size="4" /></td>'."\n";
  } elsif ($type eq 'solved') {   } elsif ($type eq 'solved') {
     my ($status,$foo)=split(/_/,$score,2);      my ($status,$foo)=split(/_/,$score,2);
     $status = 'nothing' if ($status eq '');      $status = 'nothing' if ($status eq '');
     $result.='<input type="hidden" name="'.'GD_'.$uname.'_'.      $result.='<input type="hidden" name="'.'GD_'.$student.'_'.
  $part.'_solved_s" value="'.$status.'" />'."\n";   $part.'_solved_s" value="'.$status.'" />'."\n";
     $result.='<td align="middle"><select name="'.      $result.='&nbsp;<select name="'.
  'GD_'.$uname.'_'.$part.'_solved" '.   'GD_'.$student.'_'.$part.'_solved" '.
  'onChange="javascript:changeOneScore(\''.$part.'\',\''.$uname.'\')" >'."\n";                  'onchange="javascript:changeOneScore(\''.$part.'\',\''.$student.'\')" >'."\n";
     my $optsel = '<option selected="on"> </option><option>excused</option>'."\n";      $result.= (($status eq 'excused') ? '<option> </option><option selected="selected" value="excused">'.&mt('excused').'</option>' 
     $optsel = '<option> </option><option selected="on">excused</option>'."\n"   : '<option selected="selected"> </option><option value="excused">'.&mt('excused').'</option>')."\n";
  if ($status eq 'excused');      $result.='<option value="reset status">'.&mt('reset status').'</option>';
     $result.=$optsel;      $result.="</select>&nbsp;</td>\n";
     $result.="</select></td>\n";  
  } else {   } else {
     $result.='<input type="hidden" name="'.      $result.='<input type="hidden" name="'.
  'GD_'.$uname.'_'.$part.'_'.$type.'_s" value="'.$score.'" />'.   'GD_'.$student.'_'.$part.'_'.$type.'_s" value="'.$score.'" />'.
     "\n";      "\n";
     $result.='<td align="middle"><input type="text" name="'.      $result.='<input type="text" name="'.
  'GD_'.$uname.'_'.$part.'_'.$type.'" '.   'GD_'.$student.'_'.$part.'_'.$type.'" '.
  'value="'.$score.'" size="4" /></td>'."\n";   'value="'.$score.'" size="4" /></td>'."\n";
  }   }
     }      }
     $result.='</tr>';      $result.=&Apache::loncommon::end_data_table_row();
     return $result;      return $result;
 }  }
   
 #--- change scores for all the students in a section/class  #--- change scores for all the students in a section/class
 #    record does not get update if unchanged  #    record does not get update if unchanged
 sub editgrades {  sub editgrades {
     my ($request) = @_;      my ($request,$symb) = @_;
       my $toolsymb;
     my $symb=$ENV{'form.symb'};      if ($symb =~ /ext\.tool$/) {
     my $url =$ENV{'form.url'};          $toolsymb = $symb;
     my $title='<h3><font color="#339933">Current Grade Status</font></h3>';      }
     $title.='<font size=+1><b>Resource: </b>'.$ENV{'form.url'}.'</font><br />'."\n";  
     $title.='<font size=+1><b>Section: </b>'.$ENV{'form.section'}.'</font>'."\n";  
     $title.= &show_grading_menu_form ($symb,$url);  
     my $result= '<table border="0"><tr><td bgcolor="#777777">'."\n";  
     $result.= '<table border="0"><tr bgcolor="#deffff">'.  
  '<td rowspan=2><b>Username</b></td><td rowspan=2><b>Fullname</b></td>'."\n";  
   
       my $section_display = join (", ",&Apache::loncommon::get_env_multiple('form.section'));
       my $title='<h2>'.&mt('Current Grade Status').'</h2>';
       $title.='<h4><b>'.&mt('Section:').'</b> '.$section_display.'</h4>'."\n";
   
       my $result= &Apache::loncommon::start_data_table().
    &Apache::loncommon::start_data_table_header_row().
    '<th rowspan="2" valign="middle">'.&mt('No.').'</th>'.
    '<th rowspan="2" valign="middle">'.&nameUserString('header')."</th>\n";
     my %scoreptr = (      my %scoreptr = (
     'correct'  =>'correct_by_override',      'correct'  =>'correct_by_override',
     'incorrect'=>'incorrect_by_override',      'incorrect'=>'incorrect_by_override',
     'excused'  =>'excused',      'excused'  =>'excused',
     'ungraded' =>'ungraded_attempted',      'ungraded' =>'ungraded_attempted',
                       'credited' =>'credit_attempted',
     'nothing'  => '',      'nothing'  => '',
     );      );
     my ($classlist,undef,$fullname) = &getclasslist($ENV{'form.section'},'0');      my ($classlist,undef,$fullname) = &getclasslist($env{'form.section'},'0');
   
     my (@partid);      my (@partid);
     my %weight = ();      my %weight = ();
     my %columns = ();      my %columns = ();
     my ($i,$ctr,$count,$rec_update) = (0,0,0,0);      my ($i,$ctr,$count,$rec_update) = (0,0,0,0);
   
     my (@parts) = sort(&getpartlist($url));      my $partserror;
       my (@parts) = sort(&getpartlist($symb,\$partserror));
       if ($partserror) {
           return &navmap_errormsg();
       }
     my $header;      my $header;
     while ($ctr < $ENV{'form.totalparts'}) {      while ($ctr < $env{'form.totalparts'}) {
  my $partid = $ENV{'form.partid_'.$ctr};   my $partid = $env{'form.partid_'.$ctr};
  push @partid,$partid;   push(@partid,$partid);
  $weight{$partid} = $ENV{'form.weight_'.$partid};   $weight{$partid} = $env{'form.weight_'.$partid};
  $ctr++;   $ctr++;
     }      }
       my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
       my $totcolspan = 0;
     foreach my $partid (@partid) {      foreach my $partid (@partid) {
  $header .= '<td align="center">&nbsp;<b>Old Score</b>&nbsp;</td>'.   $header .= '<th align="center">'.&mt('Old Score').'</th>'.
     '<td align="center">&nbsp;<b>New Score</b>&nbsp;</td>';      '<th align="center">'.&mt('New Score').'</th>';
  $columns{$partid}=2;   $columns{$partid}=2;
  foreach my $stores (@parts) {   foreach my $stores (@parts) {
     my ($part,$type) = &split_part_type($stores);      my ($part,$type) = &split_part_type($stores);
     if ($part !~ m/^\Q$partid\E/) { next;}      if ($part !~ m/^\Q$partid\E/) { next;}
     if ($type eq 'awarded' || $type eq 'solved') { next; }      if ($type eq 'awarded' || $type eq 'solved') { next; }
     my $display=&Apache::lonnet::metadata($url,$stores.'.display');      my $display=&Apache::lonnet::metadata($url,$stores.'.display',$toolsymb);
     $display =~ s/\[Part: (\w)+\]//;      $display =~ s/\[Part: \Q$part\E\]//;
     $header .= '<td align="center">&nbsp;<b>Old</b> '.$display.'&nbsp;</td>'.              my $narrowtext = &mt('Tries');
  '<td align="center">&nbsp;<b>New</b> '.$display.'&nbsp;</td>';      $display =~ s/Number of Attempts/$narrowtext/;
       $header .= '<th align="center">'.&mt('Old').' '.$display.'</th>'.
    '<th align="center">'.&mt('New').' '.$display.'</th>';
     $columns{$partid}+=2;      $columns{$partid}+=2;
  }   }
           $totcolspan += $columns{$partid};
     }      }
     foreach my $partid (@partid) {      foreach my $partid (@partid) {
  $result .= '<td colspan="'.$columns{$partid}.   my $display_part=&get_display_part($partid,$symb);
     '" align="center"><b>Part '.$partid.   $result .= '<th colspan="'.$columns{$partid}.'" align="center">'.
     '</b> (Weight = '.$weight{$partid}.')</td>';      &mt('Part: [_1] (Weight = [_2])',$display_part,$weight{$partid}).
       '</th>';
     }  
     $result .= '</tr><tr bgcolor="#deffff">';      }
     $result .= $header;      $result .= &Apache::loncommon::end_data_table_header_row().
     $result .= '</tr>'."\n";   &Apache::loncommon::start_data_table_header_row().
    $header.
     for ($i=0; $i<$ENV{'form.total'}; $i++) {   &Apache::loncommon::end_data_table_header_row();
  my $user = $ENV{'form.ctr'.$i};      my @noupdate;
       my ($updateCtr,$noupdateCtr) = (1,1);
       my ($got_types,%queueable);
       for ($i=0; $i<$env{'form.total'}; $i++) {
    my $user = $env{'form.ctr'.$i};
    my ($uname,$udom)=split(/:/,$user);
  my %newrecord;   my %newrecord;
  my $updateflag = 0;   my $updateflag = 0;
  my @userdom = grep /^$user:/,keys %$classlist;   my $usec=$classlist->{"$uname:$udom"}[5];
  my (undef,$udom) = split(/:/,$userdom[0]);   my $canmodify = &canmodify($usec);
    my $line = '<td'.($canmodify?'':' colspan="2"').'>'.
  $result .= '<tr bgcolor="#ffffde"><td>'.$user.'&nbsp;</td><td>'.     &nameUserString(undef,$$fullname{$user},$uname,$udom).'</td>';
     $$fullname{$userdom[0]}.'&nbsp;</td>';   if (!$canmodify) {
       push(@noupdate,
    $line."<td colspan=\"$totcolspan\"><span class=\"LC_warning\">".
    &mt('Not allowed to modify student')."</span></td>");
       next;
    }
           my %aggregate = ();
           my $aggregateflag = 0;
    $user=~s/:/_/; # colon doen't work in javascript for names
  foreach (@partid) {   foreach (@partid) {
     my $old_aw    = $ENV{'form.GD_'.$user.'_'.$_.'_awarded_s'};      my $old_aw    = $env{'form.GD_'.$user.'_'.$_.'_awarded_s'};
     my $old_part_pcr = $old_aw/($weight{$_} ne '0' ? $weight{$_}:1);      my $old_part_pcr = $old_aw/($weight{$_} ne '0' ? $weight{$_}:1);
     my $old_part  = $old_aw eq '' ? '' : $old_part_pcr;      my $old_part  = $old_aw eq '' ? '' : $old_part_pcr;
     my $old_score = $scoreptr{$ENV{'form.GD_'.$user.'_'.$_.'_solved_s'}};      my $old_score = $scoreptr{$env{'form.GD_'.$user.'_'.$_.'_solved_s'}};
       my $awarded   = $env{'form.GD_'.$user.'_'.$_.'_awarded'};
     my $awarded   = $ENV{'form.GD_'.$user.'_'.$_.'_awarded'};  
     my $pcr       = $awarded/($weight{$_} ne '0' ? $weight{$_} : 1);      my $pcr       = $awarded/($weight{$_} ne '0' ? $weight{$_} : 1);
     my $partial   = $awarded eq '' ? '' : $pcr;      my $partial   = $awarded eq '' ? '' : $pcr;
     my $score;      my $score;
     if ($partial eq '') {      if ($partial eq '') {
  $score = $scoreptr{$ENV{'form.GD_'.$user.'_'.$_.'_solved_s'}};   $score = $scoreptr{$env{'form.GD_'.$user.'_'.$_.'_solved_s'}};
     } elsif ($partial > 0) {      } elsif ($partial > 0) {
  $score = 'correct_by_override';   $score = 'correct_by_override';
     } elsif ($partial == 0) {      } elsif ($partial == 0) {
  $score = 'incorrect_by_override';   $score = 'incorrect_by_override';
     }      }
     $score = 'excused' if (($ENV{'form.GD_'.$user.'_'.$_.'_solved'} eq 'excused') &&      my $dropMenu = $env{'form.GD_'.$user.'_'.$_.'_solved'};
    ($score ne 'excused'));      $score = 'excused' if (($dropMenu eq 'excused') && ($score ne 'excused'));
     $result .= '<td align="center">'.$old_aw.'&nbsp;</td>'.  
  '<td align="center">'.$awarded.  
  ($score eq 'excused' ? $score : '').'&nbsp;</td>';  
   
     if (!($old_part eq $partial && $old_score eq $score)) {      $newrecord{'resource.'.$_.'.regrader'}=
    "$env{'user.name'}:$env{'user.domain'}";
       if ($dropMenu eq 'reset status' &&
    $old_score ne '') { # ignore if no previous attempts => nothing to reset
    $newrecord{'resource.'.$_.'.tries'} = '';
    $newrecord{'resource.'.$_.'.solved'} = '';
    $newrecord{'resource.'.$_.'.award'} = '';
    $newrecord{'resource.'.$_.'.awarded'} = '';
    $updateflag = 1;
                   if ($env{'form.GD_'.$user.'_'.$_.'_aggtries'} > 0) {
                       my $aggtries = $env{'form.GD_'.$user.'_'.$_.'_aggtries'};
                       my $totaltries = $env{'form.GD_'.$user.'_'.$_.'_totaltries'};
                       my $solvedstatus = $env{'form.GD_'.$user.'_'.$_.'_solved_s'};
                       &decrement_aggs($symb,$_,\%aggregate,$aggtries,$totaltries,$solvedstatus);
                       $aggregateflag = 1;
                   }
       } elsif (!($old_part eq $partial && $old_score eq $score)) {
  $updateflag = 1;   $updateflag = 1;
  $newrecord{'resource.'.$_.'.awarded'}  = $partial if $partial ne '';   $newrecord{'resource.'.$_.'.awarded'}  = $partial if $partial ne '';
  $newrecord{'resource.'.$_.'.solved'}   = $score;   $newrecord{'resource.'.$_.'.solved'}   = $score;
  $rec_update++;   $rec_update++;
     }      }
   
       $line .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
    '<td align="center">'.$awarded.
    ($score eq 'excused' ? $score : '').'&nbsp;</td>';
   
   
     my $partid=$_;      my $partid=$_;
     foreach my $stores (@parts) {      foreach my $stores (@parts) {
  my ($part,$type) = &split_part_type($stores);   my ($part,$type) = &split_part_type($stores);
  if ($part !~ m/^\Q$partid\E/) { next;}   if ($part !~ m/^\Q$partid\E/) { next;}
  if ($type eq 'awarded' || $type eq 'solved') { next; }   if ($type eq 'awarded' || $type eq 'solved') { next; }
  my $old_aw    = $ENV{'form.GD_'.$user.'_'.$part.'_'.$type.'_s'};   my $old_aw    = $env{'form.GD_'.$user.'_'.$part.'_'.$type.'_s'};
  my $awarded   = $ENV{'form.GD_'.$user.'_'.$part.'_'.$type};   my $awarded   = $env{'form.GD_'.$user.'_'.$part.'_'.$type};
  if ($awarded ne '' && $awarded ne $old_aw) {   if ($awarded ne '' && $awarded ne $old_aw) {
     $newrecord{'resource.'.$part.'.'.$type}= $awarded;      $newrecord{'resource.'.$part.'.'.$type}= $awarded;
       $newrecord{'resource.'.$part.'.regrader'}="$env{'user.name'}:$env{'user.domain'}";
     $updateflag=1;      $updateflag=1;
  }   }
  $result .= '<td align="center">'.$old_aw.'&nbsp;</td>'.   $line .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
     '<td align="center">'.$awarded.'&nbsp;</td>';      '<td align="center">'.$awarded.'&nbsp;</td>';
     }      }
  }   }
  $result .= '</tr>'."\n";   $line.="\n";
   
    my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
    my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
   
  if ($updateflag) {   if ($updateflag) {
     $count++;      $count++;
     $newrecord{'resource.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";      &Apache::lonnet::cstore(\%newrecord,$symb,$env{'request.course.id'},
     &Apache::lonnet::cstore(\%newrecord,$symb,$ENV{'request.course.id'},      $udom,$uname);
     $udom,$user);  
  }      if (&Apache::bridgetask::in_queue('gradingqueue',$symb,$cdom,
         $cnum,$udom,$uname)) {
    # need to figure out if should be in queue.
    my %record =  
       &Apache::lonnet::restore($symb,$env{'request.course.id'},
        $udom,$uname);
    my $all_graded = 1;
    my $none_graded = 1;
                   unless ($got_types) {
                       my $error;
                       my ($plist,$handgrd,$resptype) = &response_type($symb,\$error);
                       unless ($error) {
                           foreach my $part (@parts) {
                               if (ref($resptype->{$part}) eq 'HASH') {
                                   foreach my $id (keys(%{$resptype->{$part}})) {
                                       if (($resptype->{$part}->{$id} eq 'essay') ||
                                           (lc($handgrd->{$part.'_'.$id}) eq 'yes')) {
                                           $queueable{$part} = 1;
                                           last;
                                       }
                                   }
                               }
                           }
                       }
                       $got_types = 1;
                   }
    foreach my $part (@parts) {
                       if ($queueable{$part}) {
           if ( $record{'resource.'.$part.'.awarded'} eq '' ) {
       $all_graded = 0;
           } else {
       $none_graded = 0;
           }
       }
                   }
    if ($all_graded || $none_graded) {
       &Apache::bridgetask::remove_from_queue('gradingqueue',
      $symb,$cdom,$cnum,
      $udom,$uname);
    }
       }
   
       $result.=&Apache::loncommon::start_data_table_row().
    '<td align="right">&nbsp;'.$updateCtr.'&nbsp;</td>'.$line.
    &Apache::loncommon::end_data_table_row();
       $updateCtr++;
    } else {
       push(@noupdate,
    '<td align="right">&nbsp;'.$noupdateCtr.'&nbsp;</td>'.$line);
       $noupdateCtr++;
    }
           if ($aggregateflag) {
               &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
     $cdom,$cnum);
           }
     }      }
     $result .= '</table></td></tr></table>'."\n";      if (@noupdate) {
     my $msg = '<b>Number of records updated = '.$rec_update.          my $numcols=$totcolspan+2;
  ' for '.$count.' student'.($count <= 1 ? '' : 's').'.</b><br />'.   $result .= &Apache::loncommon::start_data_table_row('LC_empty_row').
  '<b>Total number of students = '.$ENV{'form.total'}.'</b><br />';      '<td align="center" colspan="'.$numcols.'">'.
       &mt('No Changes Occurred For the Students Below').
       '</td>'.
       &Apache::loncommon::end_data_table_row();
    foreach my $line (@noupdate) {
       $result.=
    &Apache::loncommon::start_data_table_row().
    $line.
    &Apache::loncommon::end_data_table_row();
    }
       }
       $result .= &Apache::loncommon::end_data_table();
       my $msg = '<p><b>'.
    &mt('Number of records updated = [_1] for [quant,_2,student].',
       $rec_update,$count).'</b><br />'.
    '<b>'.&mt('Total number of students = [_1]',$env{'form.total'}).
    '</b></p>';
     return $title.$msg.$result;      return $title.$msg.$result;
 }  }
   
Line 1897  sub split_part_type { Line 4666  sub split_part_type {
     my ($partstr) = @_;      my ($partstr) = @_;
     my ($temp,@allparts)=split(/_/,$partstr);      my ($temp,@allparts)=split(/_/,$partstr);
     my $type=pop(@allparts);      my $type=pop(@allparts);
     my $part=join('.',@allparts);      my $part=join('_',@allparts);
     return ($part,$type);      return ($part,$type);
 }  }
   
Line 1912  sub split_part_type { Line 4681  sub split_part_type {
 #  #
 #--- Javascript to handle csv upload  #--- Javascript to handle csv upload
 sub csvupload_javascript_reverse_associate {  sub csvupload_javascript_reverse_associate {
       my $error1=&mt('You need to specify the username, the student/employee ID, or the clicker ID');
       my $error2=&mt('You need to specify at least one grading field');
     &js_escape(\$error1);
     &js_escape(\$error2);
   return(<<ENDPICK);    return(<<ENDPICK);
   function verify(vf) {    function verify(vf) {
     var foundsomething=0;      var foundsomething=0;
     var founduname=0;      var founduname=0;
     var founddomain=0;      var foundID=0;
       var foundclicker=0;
     for (i=0;i<=vf.nfields.value;i++) {      for (i=0;i<=vf.nfields.value;i++) {
       tw=eval('vf.f'+i+'.selectedIndex');        tw=eval('vf.f'+i+'.selectedIndex');
       if (i==0 && tw!=0) { founduname=1; }        if (i==0 && tw!=0) { foundID=1; }
       if (i==1 && tw!=0) { founddomain=1; }        if (i==1 && tw!=0) { founduname=1; }
       if (i!=0 && i!=1 && tw!=0) { foundsomething=1; }        if (i==2 && tw!=0) { foundclicker=1; }
     }        if (i!=0 && i!=1 && i!=2 && i!=3 && tw!=0) { foundsomething=1; }
     if (founduname==0 || founddomain==0) {      }
       alert('You need to specify at both the username and domain');      if (founduname==0 && foundID==0 && foundclicker==0) {
       return;   alert('$error1');
    return;
     }      }
     if (foundsomething==0) {      if (foundsomething==0) {
       alert('You need to specify at least one grading field');   alert('$error2');
       return;   return;
     }      }
     vf.submit();      vf.submit();
   }    }
Line 1950  ENDPICK Line 4725  ENDPICK
 }  }
   
 sub csvupload_javascript_forward_associate {  sub csvupload_javascript_forward_associate {
       my $error1=&mt('You need to specify the username, the student/employee ID, or the clicker ID');
       my $error2=&mt('You need to specify at least one grading field');
     &js_escape(\$error1);
     &js_escape(\$error2);
   return(<<ENDPICK);    return(<<ENDPICK);
   function verify(vf) {    function verify(vf) {
     var foundsomething=0;      var foundsomething=0;
     var founduname=0;      var founduname=0;
     var founddomain=0;      var foundID=0;
       var foundclicker=0;
     for (i=0;i<=vf.nfields.value;i++) {      for (i=0;i<=vf.nfields.value;i++) {
       tw=eval('vf.f'+i+'.selectedIndex');        tw=eval('vf.f'+i+'.selectedIndex');
       if (tw==1) { founduname=1; }        if (tw==1) { foundID=1; }
       if (tw==2) { founddomain=1; }        if (tw==2) { founduname=1; }
       if (tw>2) { foundsomething=1; }        if (tw==3) { foundclicker=1; }
     }        if (tw>4) { foundsomething=1; }
     if (founduname==0 || founddomain==0) {      }
       alert('You need to specify at both the username and domain');      if (founduname==0 && foundID==0 && Æ’oundclicker==0) {
       return;   alert('$error1');
    return;
     }      }
     if (foundsomething==0) {      if (foundsomething==0) {
       alert('You need to specify at least one grading field');   alert('$error2');
       return;   return;
     }      }
     vf.submit();      vf.submit();
   }    }
Line 1985  ENDPICK Line 4766  ENDPICK
 }  }
   
 sub csvuploadmap_header {  sub csvuploadmap_header {
     my ($request,$symb,$url,$datatoken,$distotal)= @_;      my ($request,$symb,$datatoken,$distotal)= @_;
     my $javascript;      my $javascript;
     if ($ENV{'form.upfile_associate'} eq 'reverse') {      if ($env{'form.upfile_associate'} eq 'reverse') {
  $javascript=&csvupload_javascript_reverse_associate();   $javascript=&csvupload_javascript_reverse_associate();
     } else {      } else {
  $javascript=&csvupload_javascript_forward_associate();   $javascript=&csvupload_javascript_forward_associate();
     }      }
   
     my $result='<table border="0">';      $symb = &Apache::lonenc::check_encrypt($symb);
     $result.='<tr><td colspan=3><font size=+1><b>Resource: </b>'.$url.'</font></td></tr>';      $request->print('<form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">'.
     my ($partlist,$handgrade) = &response_type($url);                      &mt('Total number of records found in file: [_1]',$distotal).'<hr />'.
     my ($resptype,$hdgrade)=('','no');                      &mt('Associate entries from the uploaded file with as many fields as you can.'));
     for (sort keys(%$handgrade)) {      my $reverse=&mt("Reverse Association");
  my ($responsetype,$handgrade)=split(/:/,$$handgrade{$_});  
  $resptype = $responsetype;  
  $hdgrade = $handgrade if ($handgrade eq 'yes');  
  $result.='<tr><td><b>Part </b>'.(split(/_/))[0].'</td>'.  
     '<td><b>Type: </b>'.$responsetype.'</td>'.  
     '<td><b>Handgrade: </b>'.$handgrade.'</font></td></tr>';  
     }  
     $result.='</table>';  
     $request->print(<<ENDPICK);      $request->print(<<ENDPICK);
 <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">  <br />
 <h3><font color="#339933">Uploading Class Grades</font></h3>  <input type="button" value="$reverse" onclick="javascript:this.form.associate.value='Reverse Association';submit(this.form);" />
 $result  
 <hr>  
 <h3>Identify fields</h3>  
 Total number of records found in file: $distotal <hr />  
 Enter as many fields as you can. The system will inform you and bring you back  
 to this page if the data selected is insufficient to run your class.<hr />  
 <input type="button" value="Reverse Association" onClick="javascript:this.form.associate.value='Reverse Association';submit(this.form);" />  
 <input type="hidden" name="associate"  value="" />  <input type="hidden" name="associate"  value="" />
 <input type="hidden" name="phase"      value="three" />  <input type="hidden" name="phase"      value="three" />
 <input type="hidden" name="datatoken"  value="$datatoken" />  <input type="hidden" name="datatoken"  value="$datatoken" />
 <input type="hidden" name="fileupload" value="$ENV{'form.fileupload'}" />  <input type="hidden" name="fileupload" value="$env{'form.fileupload'}" />
 <input type="hidden" name="upfiletype" value="$ENV{'form.upfiletype'}" />  <input type="hidden" name="upfiletype" value="$env{'form.upfiletype'}" />
 <input type="hidden" name="upfile_associate"   <input type="hidden" name="upfile_associate" 
                                        value="$ENV{'form.upfile_associate'}" />                                         value="$env{'form.upfile_associate'}" />
 <input type="hidden" name="symb"       value="$symb" />  <input type="hidden" name="symb"       value="$symb" />
 <input type="hidden" name="url"        value="$url" />  <input type="hidden" name="command"    value="csvuploadoptions" />
 <input type="hidden" name="command"    value="csvuploadassign" />  
 <hr />  <hr />
 <script type="text/javascript" language="Javascript">  
 $javascript  
 </script>  
 ENDPICK  ENDPICK
 return '';      $request->print(&Apache::lonhtmlcommon::scripttag($javascript));
       return '';
   
 }  }
   
 sub csvupload_fields {  sub csvupload_fields {
     my ($url) = @_;      my ($symb,$errorref) = @_;
     my (@parts) = &getpartlist($url);      my $toolsymb;
     my @fields=(['username','Student Username'],['domain','Student Domain']);      if ($symb =~ /ext\.tool$/) {
           $toolsymb = $symb;
       }
       my (@parts) = &getpartlist($symb,$errorref);
       if (ref($errorref)) {
           if ($$errorref) {
               return;
           }
       }
   
       my @fields=(['ID','Student/Employee ID'],
    ['username','Student Username'],
    ['clicker','Clicker ID'],
    ['domain','Student Domain']);
       my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
     foreach my $part (sort(@parts)) {      foreach my $part (sort(@parts)) {
  my @datum;   my @datum;
  my $display=&Apache::lonnet::metadata($url,$part.'.display');   my $display=&Apache::lonnet::metadata($url,$part.'.display',$toolsymb);
  my $name=$part;   my $name=$part;
  if  (!$display) { $display = $name; }   if (!$display) { $display = $name; }
  @datum=($name,$display);   @datum=($name,$display);
    if ($name=~/^stores_(.*)_awarded/) {
       push(@fields,['stores_'.$1.'_points',"Points [Part: $1]"]);
    }
  push(@fields,\@datum);   push(@fields,\@datum);
     }      }
     return (@fields);      return (@fields);
Line 2052  sub csvupload_fields { Line 4832  sub csvupload_fields {
   
 sub csvuploadmap_footer {  sub csvuploadmap_footer {
     my ($request,$i,$keyfields) =@_;      my ($request,$i,$keyfields) =@_;
       my $buttontext = &mt('Assign Grades');
     $request->print(<<ENDPICK);      $request->print(<<ENDPICK);
 </table>  </table>
 <input type="hidden" name="nfields" value="$i" />  <input type="hidden" name="nfields" value="$i" />
 <input type="hidden" name="keyfields" value="$keyfields" />  <input type="hidden" name="keyfields" value="$keyfields" />
 <input type="button" onClick="javascript:verify(this.form)" value="Assign Grades" /><br />  <input type="button" onclick="javascript:verify(this.form)" value="$buttontext" /><br />
 </form>  </form>
 ENDPICK  ENDPICK
 }  }
   
   sub checkforfile_js {
       my $alertmsg = &mt('Please use the browse button to select a file from your local directory.');
       &js_escape(\$alertmsg);
       my $result = &Apache::lonhtmlcommon::scripttag(<<CSVFORMJS);
       function checkUpload(formname) {
    if (formname.upfile.value == "") {
       alert("$alertmsg");
       return false;
    }
    formname.submit();
       }
   CSVFORMJS
       return $result;
   }
   
   sub upcsvScores_form {
       my ($request,$symb) = @_;
       if (!$symb) {return '';}
       my $result=&checkforfile_js();
       $result.=&Apache::loncommon::start_data_table().
                &Apache::loncommon::start_data_table_header_row().
                '<th>'.&mt('Specify a file containing the class scores for current resource.').'</th>'.
                &Apache::loncommon::end_data_table_header_row().
                &Apache::loncommon::start_data_table_row().'<td>';
       my $upload=&mt("Upload Scores");
       my $upfile_select=&Apache::loncommon::upfile_select_html();
       my $ignore=&mt('Ignore First Line');
       $symb = &Apache::lonenc::check_encrypt($symb);
       $result.=<<ENDUPFORM;
   <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
   <input type="hidden" name="symb" value="$symb" />
   <input type="hidden" name="command" value="csvuploadmap" />
   $upfile_select
   <br /><input type="button" onclick="javascript:checkUpload(this.form);" value="$upload" />
   </form>
   ENDUPFORM
       $result.=&Apache::loncommon::help_open_topic("Course_Convert_To_CSV",
                              &mt("How do I create a CSV file from a spreadsheet")).
                '</td>'.
               &Apache::loncommon::end_data_table_row().
               &Apache::loncommon::end_data_table();
       return $result;
   }
   
   
 sub csvuploadmap {  sub csvuploadmap {
     my ($request)= @_;      my ($request,$symb) = @_;
     my ($symb,$url)=&get_symb_and_url($request);  
     if (!$symb) {return '';}      if (!$symb) {return '';}
   
     my $datatoken;      my $datatoken;
     if (!$ENV{'form.datatoken'}) {      if (!$env{'form.datatoken'}) {
  $datatoken=&Apache::loncommon::upfile_store($request);   $datatoken=&Apache::loncommon::upfile_store($request);
     } else {      } else {
  $datatoken=$ENV{'form.datatoken'};   $datatoken=&Apache::loncommon::valid_datatoken($env{'form.datatoken'});
  &Apache::loncommon::load_tmp_file($request);          if ($datatoken ne '') {
       &Apache::loncommon::load_tmp_file($request,$datatoken);
           }
     }      }
     my @records=&Apache::loncommon::upfile_record_sep();      my @records=&Apache::loncommon::upfile_record_sep();
     &csvuploadmap_header($request,$symb,$url,$datatoken,$#records+1);      &csvuploadmap_header($request,$symb,$datatoken,$#records+1);
     my ($i,$keyfields);      my ($i,$keyfields);
     if (@records) {      if (@records) {
  my @fields=&csvupload_fields($url);          my $fieldserror;
    my @fields=&csvupload_fields($symb,\$fieldserror);
  if ($ENV{'form.upfile_associate'} eq 'reverse') {          if ($fieldserror) {
               $request->print(&navmap_errormsg());
               return;
           }
    if ($env{'form.upfile_associate'} eq 'reverse') {
     &Apache::loncommon::csv_print_samples($request,\@records);      &Apache::loncommon::csv_print_samples($request,\@records);
     $i=&Apache::loncommon::csv_print_select_table($request,\@records,      $i=&Apache::loncommon::csv_print_select_table($request,\@records,
   \@fields);    \@fields);
Line 2088  sub csvuploadmap { Line 4920  sub csvuploadmap {
     unshift(@fields,['none','']);      unshift(@fields,['none','']);
     $i=&Apache::loncommon::csv_samples_select_table($request,\@records,      $i=&Apache::loncommon::csv_samples_select_table($request,\@records,
     \@fields);      \@fields);
     my %sone=&Apache::loncommon::record_sep($records[0]);              foreach my $rec (@records) {
     $keyfields=join(',',sort(keys(%sone)));                  my %temp = &Apache::loncommon::record_sep($rec);
                   if (%temp) {
                       $keyfields=join(',',sort(keys(%temp)));
                       last;
                   }
               }
  }   }
     }      }
     &csvuploadmap_footer($request,$i,$keyfields);      &csvuploadmap_footer($request,$i,$keyfields);
   
     return '';      return '';
 }  }
   
 sub csvuploadassign {  sub csvuploadoptions {
     my ($request)= @_;      my ($request,$symb)= @_;
     my ($symb,$url)=&get_symb_and_url($request);      my $overwrite=&mt('Overwrite any existing score');
     if (!$symb) {return '';}      $request->print(<<ENDPICK);
     &Apache::loncommon::load_tmp_file($request);  <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
     my @gradedata = &Apache::loncommon::upfile_record_sep();  <input type="hidden" name="command"    value="csvuploadassign" />
     my @keyfields = split(/\,/,$ENV{'form.keyfields'});  <p>
     my %fields=();  <label>
     for (my $i=0; $i<=$ENV{'form.nfields'}; $i++) {     <input type="checkbox" name="overwite_scores" checked="checked" />
  if ($ENV{'form.upfile_associate'} eq 'reverse') {     $overwrite
     if ($ENV{'form.f'.$i} ne 'none') {  </label>
  $fields{$keyfields[$i]}=$ENV{'form.f'.$i};  </p>
   ENDPICK
       my %fields=&get_fields();
       if (!defined($fields{'domain'})) {
    my $domform = &Apache::loncommon::select_dom_form($env{'request.role.domain'},'default_domain');
    $request->print("\n<p>".&mt('Users are in domain: [_1]',$domform)."</p>\n");
       }
       foreach my $key (sort(keys(%env))) {
    if ($key !~ /^form\.(.*)$/) { next; }
    my $cleankey=$1;
    if ($cleankey eq 'command') { next; }
    $request->print('<input type="hidden" name="'.$cleankey.
    '"  value="'.$env{$key}.'" />'."\n");
       }
       # FIXME do a check for any duplicated user ids...
       # FIXME do a check for any invalid user ids?...
       $request->print('<input type="submit" value="'.&mt('Assign Grades').'" /><br />
   <hr /></form>'."\n");
       return '';
   }
   
   sub get_fields {
       my %fields;
       my @keyfields = split(/\,/,$env{'form.keyfields'});
       for (my $i=0; $i<=$env{'form.nfields'}; $i++) {
    if ($env{'form.upfile_associate'} eq 'reverse') {
       if ($env{'form.f'.$i} ne 'none') {
    $fields{$keyfields[$i]}=$env{'form.f'.$i};
     }      }
  } else {   } else {
     if ($ENV{'form.f'.$i} ne 'none') {      if ($env{'form.f'.$i} ne 'none') {
  $fields{$ENV{'form.f'.$i}}=$keyfields[$i];   $fields{$env{'form.f'.$i}}=$keyfields[$i];
     }      }
  }   }
     }      }
     $request->print('<h3>Assigning Grades</h3>');      return %fields;
     my $courseid=$ENV{'request.course.id'};  }
     my ($classlist) = &getclasslist('all','1');  
   sub csvuploadassign {
       my ($request,$symb) = @_;
       if (!$symb) {return '';}
       my $error_msg = '';
       my $datatoken = &Apache::loncommon::valid_datatoken($env{'form.datatoken'});
       if ($datatoken ne '') { 
           &Apache::loncommon::load_tmp_file($request,$datatoken);
       }
       my @gradedata = &Apache::loncommon::upfile_record_sep();
       my %fields=&get_fields();
       my $courseid=$env{'request.course.id'};
       my ($classlist) = &getclasslist('all',0);
       my @notallowed;
     my @skipped;      my @skipped;
       my @warnings;
     my $countdone=0;      my $countdone=0;
     foreach my $grade (@gradedata) {      foreach my $grade (@gradedata) {
  my %entries=&Apache::loncommon::record_sep($grade);   my %entries=&Apache::loncommon::record_sep($grade);
    my $domain;
    if ($entries{$fields{'domain'}}) {
       $domain=$entries{$fields{'domain'}};
    } else {
       $domain=$env{'form.default_domain'};
    }
    $domain=~s/\s//g;
  my $username=$entries{$fields{'username'}};   my $username=$entries{$fields{'username'}};
  my $domain=$entries{$fields{'domain'}};   $username=~s/\s//g;
    if (!$username) {
       my $id=$entries{$fields{'ID'}};
       $id=~s/\s//g;
               if ($id ne '') {
           my %ids=&Apache::lonnet::idget($domain,[$id]);
           $username=$ids{$id};
               } else {
                   if ($entries{$fields{'clicker'}}) {
                       my $clicker = $entries{$fields{'clicker'}};
                       $clicker=~s/\s//g;
                       if ($clicker ne '') {
                           my %clickers = &Apache::lonnet::idget($domain,[$clicker],'clickers');
                           if ($clickers{$clicker} ne '') {  
                               my $match = 0;
                               my @inclass;
                               foreach my $poss (split(/,/,$clickers{$clicker})) {
                                   if (exists($$classlist{"$poss:$domain"})) {
                                       $username = $poss;
                                       push(@inclass,$poss);
                                       $match ++;
                                       
                                   }
                               }
                               if ($match > 1) {
                                   undef($username); 
                                   $request->print('<p class="LC_warning">'.
                                                   &mt('Score not saved for clicker: [_1] (matched multiple usernames: [_2])',
                                                   $clicker,join(', ',@inclass)).'</p>');
                               }
                           }
                       }
                   }
               }
    }
  if (!exists($$classlist{"$username:$domain"})) {   if (!exists($$classlist{"$username:$domain"})) {
     push(@skipped,"$username:$domain");      my $id=$entries{$fields{'ID'}};
       $id=~s/\s//g;
               my $clicker = $entries{$fields{'clicker'}};
               $clicker=~s/\s//g;
               if ($clicker) {
                   push(@skipped,"$clicker:$domain");
       } elsif ($id) {
    push(@skipped,"$id:$domain");
       } else {
    push(@skipped,"$username:$domain");
       }
       next;
    }
    my $usec=$classlist->{"$username:$domain"}[5];
    if (!&canmodify($usec)) {
       push(@notallowed,"$username:$domain");
     next;      next;
  }   }
    my %points;
  my %grades;   my %grades;
  foreach my $dest (keys(%fields)) {   foreach my $dest (keys(%fields)) {
     if ($dest eq 'username' || $dest eq 'domain') { next; }      if ($dest eq 'ID' || $dest eq 'username' ||
     if ($entries{$fields{$dest}} eq '') { next; }   $dest eq 'domain') { next; }
     my $store_key=$dest;      if ($entries{$fields{$dest}} =~ /^\s*$/) { next; }
     $store_key=~s/^stores/resource/;      if ($dest=~/stores_(.*)_points/) {
     $store_key=~s/_/\./g;   my $part=$1;
     $grades{$store_key}=$entries{$fields{$dest}};   my $wgt =&Apache::lonnet::EXT('resource.'.$part.'.weight',
  }        $symb,$domain,$username);
  $grades{"resource.regrader"}="$ENV{'user.name'}:$ENV{'user.domain'}";                  if ($wgt) {
  &Apache::lonnet::cstore(\%grades,$symb,$ENV{'request.course.id'},                      $entries{$fields{$dest}}=~s/\s//g;
  $domain,$username);                      my $pcr=$entries{$fields{$dest}} / $wgt;
  $request->print('.');                      my $award=($pcr == 0) ? 'incorrect_by_override'
  $request->rflush();                                            : 'correct_by_override';
  $countdone++;                      if ($pcr>1) {
                          push(@warnings,&mt("[_1]: point value larger than weight","$username:$domain"));
                       }
                       $grades{"resource.$part.awarded"}=$pcr;
                       $grades{"resource.$part.solved"}=$award;
                       $points{$part}=1;
                   } else {
                       $error_msg = "<br />" .
                           &mt("Some point values were assigned"
                               ." for problems with a weight "
                               ."of zero. These values were "
                               ."ignored.");
                   }
       } else {
    if ($dest=~/stores_(.*)_awarded/) { if ($points{$1}) {next;} }
    if ($dest=~/stores_(.*)_solved/)  { if ($points{$1}) {next;} }
    my $store_key=$dest;
    $store_key=~s/^stores/resource/;
    $store_key=~s/_/\./g;
    $grades{$store_key}=$entries{$fields{$dest}};
       }
    }
    if (! %grades) {
              push(@skipped,&mt("[_1]: no data to save","$username:$domain")); 
           } else {
      $grades{"resource.regrader"}="$env{'user.name'}:$env{'user.domain'}";
      my $result=&Apache::lonnet::cstore(\%grades,$symb,
      $env{'request.course.id'},
      $domain,$username);
      if ($result eq 'ok') {
   # Successfully stored
         $request->print('.');
   # Remove from grading queue
                 &Apache::bridgetask::remove_from_queue('gradingqueue',$symb,
                                                $env{'course.'.$env{'request.course.id'}.'.domain'},
                                                $env{'course.'.$env{'request.course.id'}.'.num'},
                                                $domain,$username);
                 $countdone++;
              } else {
         $request->print("<p><span class=\"LC_error\">".
                                 &mt("Failed to save data for student [_1]. Message when trying to save was: [_2]",
                                     "$username:$domain",$result)."</span></p>");
      }
      $request->rflush();
           }
       }
       $request->print('<br />'.&Apache::lonhtmlcommon::confirm_success(&mt("Saved scores for [quant,_1,student]",$countdone),$countdone==0));
       if (@warnings) {
           $request->print('<br />'.&Apache::lonhtmlcommon::confirm_success(&mt('Warnings generated for the following saved scores:'),1).'<br />');
           $request->print(join(', ',@warnings));
     }      }
     $request->print("<br />Stored $countdone students\n");  
     if (@skipped) {      if (@skipped) {
  $request->print('<br /><font size="+1"><b>Skipped Students</b></font><br />');   $request->print('<br />'.&Apache::lonhtmlcommon::confirm_success(&mt('No scores stored for the following username(s):'),1).'<br />');
  foreach my $student (@skipped) { $request->print("<br />$student"); }          $request->print(join(', ',@skipped));
     }      }
     $request->print(&view_edit_entire_class_form($symb,$url));      if (@notallowed) {
     $request->print(&show_grading_menu_form($symb,$url));   $request->print('<br />'.&Apache::lonhtmlcommon::confirm_success(&mt('Modification of scores not allowed for the following username(s):'),1).'<br />');
     return '';   $request->print(join(', ',@notallowed));
       }
       $request->print("<br />\n");
       return $error_msg;
 }  }
 #------------- end of section for handling csv file upload ---------  #------------- end of section for handling csv file upload ---------
 #  #
 #-------------------------------------------------------------------  #-------------------------------------------------------------------
   #
   #-------------- Next few routines handle grading by page/sequence
   #
   #--- Select a page/sequence and a student to grade
   sub pickStudentPage {
       my ($request,$symb) = @_;
   
       my $alertmsg = &mt('Please select the student you wish to grade.');
       &js_escape(\$alertmsg);
       $request->print(&Apache::lonhtmlcommon::scripttag(<<LISTJAVASCRIPT));
   
   function checkPickOne(formname) {
       if (radioSelection(formname.student) == null) {
    alert("$alertmsg");
    return;
       }
       ptr = pullDownSelection(formname.selectpage);
       formname.page.value = formname["page"+ptr].value;
       formname.title.value = formname["title"+ptr].value;
       formname.submit();
   }
   
   LISTJAVASCRIPT
       &commonJSfunctions($request);
   
       my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
       my $cnum      = $env{"course.$env{'request.course.id'}.num"};
       my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
       my $getgroup  = $env{'form.group'} eq '' ? 'all' : $env{'form.group'};
   
       my $result='<h3><span class="LC_info">&nbsp;'.
    &mt('Manual Grading by Page or Sequence').'</span></h3>';
   
       $result.='<form action="/adm/grades" method="post" name="displayPage">'."\n";
       my $map_error;
       my ($titles,$symbx) = &getSymbMap($map_error);
       if ($map_error) {
           $request->print(&navmap_errormsg());
           return; 
       }
       my ($curpage) =&Apache::lonnet::decode_symb($symb); 
   #    my ($curpage,$mapId) =&Apache::lonnet::decode_symb($symb); 
   #    my $type=($curpage =~ /\.(page|sequence)/);
   
       # Collection of hidden fields
       my $ctr=0;
       foreach (@$titles) {
           my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
           $result.='<input type="hidden" name="page'.$ctr.'" value="'.$$symbx{$_}.'" />'."\n";
           $result.='<input type="hidden" name="title'.$ctr.'" value="'.$showtitle.'" />'."\n";
           $ctr++;
       }
       $result.='<input type="hidden" name="page" />'."\n".
           '<input type="hidden" name="title" />'."\n";
   
       $result.=&build_section_inputs();
       my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
       $result.='<input type="hidden" name="Status"  value="'.$stu_status.'" />'."\n".
    '<input type="hidden" name="command" value="displayPage" />'."\n".
    '<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n";
   
       # Show grading options
       $result.=&Apache::lonhtmlcommon::start_pick_box();
       my $select = '<select name="selectpage">'."\n";
       $ctr=0;
       foreach (@$titles) {
    my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
    $select.='<option value="'.$ctr.'"'.
       ($$symbx{$_} =~ /$curpage$/ ? ' selected="selected"' : '').
       '>'.$showtitle.'</option>'."\n";
    $ctr++;
       }
       $select.= '</select>';
   
       $result.=
           &Apache::lonhtmlcommon::row_title(&mt('Problems from'))
          .$select
          .&Apache::lonhtmlcommon::row_closure();
   
       $result.=
           &Apache::lonhtmlcommon::row_title(&mt('View Problem Text'))
          .'<label><input type="radio" name="vProb" value="no"'
              .' checked="checked" /> '.&mt('no').' </label>'."\n"
          .'<label><input type="radio" name="vProb" value="yes" />'
              .&mt('yes').'</label>'."\n"
          .&Apache::lonhtmlcommon::row_closure();
   
       $result.=
           &Apache::lonhtmlcommon::row_title(&mt('View Submissions'))
          .'<label><input type="radio" name="lastSub" value="none" /> '
              .&mt('none').' </label>'."\n"
          .'<label><input type="radio" name="lastSub" value="datesub"'
              .' checked="checked" /> '.&mt('all submissions').'</label>'."\n"
          .'<label><input type="radio" name="lastSub" value="all" /> '
              .&mt('all submissions with details').' </label>'
          .&Apache::lonhtmlcommon::row_closure();
       
       $result.=
           &Apache::lonhtmlcommon::row_title(&mt('Use CODE'))
          .'<input type="text" name="CODE" value="" />'
          .&Apache::lonhtmlcommon::row_closure(1)
          .&Apache::lonhtmlcommon::end_pick_box();
   
       # Show list of students to select for grading
       $result.='<br /><input type="button" '.
                'onclick="javascript:checkPickOne(this.form);" value="'.&mt('Next').' &rarr;" /><br />'."\n";
   
       $request->print($result);
   
       my $studentTable.='&nbsp;<b>'.&mt('Select a student you wish to grade and then click on the Next button.').'</b><br />'.
    &Apache::loncommon::start_data_table().
    &Apache::loncommon::start_data_table_header_row().
    '<th align="right">&nbsp;'.&mt('No.').'</th>'.
    '<th>'.&nameUserString('header').'</th>'.
    '<th align="right">&nbsp;'.&mt('No.').'</th>'.
    '<th>'.&nameUserString('header').'</th>'.
    &Apache::loncommon::end_data_table_header_row();
    
       my (undef,undef,$fullname) = &getclasslist($getsec,'1',$getgroup);
       my $ptr = 1;
       foreach my $student (sort 
    {
        if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
    return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
        }
        return $a cmp $b;
    } (keys(%$fullname))) {
    my ($uname,$udom) = split(/:/,$student);
    $studentTable.=($ptr%2==1 ? &Apache::loncommon::start_data_table_row()
                                     : '</td>');
    $studentTable.='<td align="right">'.$ptr.'&nbsp;</td>';
    $studentTable.='<td>&nbsp;<label><input type="radio" name="student" value="'.$student.'" /> '
       .&nameUserString(undef,$$fullname{$student},$uname,$udom)."</label>\n";
    $studentTable.=
       ($ptr%2 == 0 ? '</td>'.&Apache::loncommon::end_data_table_row() 
                            : '');
    $ptr++;
       }
       if ($ptr%2 == 0) {
    $studentTable.='</td><td>&nbsp;</td><td>&nbsp;</td>'.
       &Apache::loncommon::end_data_table_row();
       }
       $studentTable.=&Apache::loncommon::end_data_table()."\n";
       $studentTable.='<input type="button" '.
                      'onclick="javascript:checkPickOne(this.form);" value="'.&mt('Next').' &rarr;" /></form>'."\n";
   
       $request->print($studentTable);
   
       return '';
   }
   
   sub getSymbMap {
       my ($map_error) = @_;
       my $navmap = Apache::lonnavmaps::navmap->new();
       unless (ref($navmap)) {
           if (ref($map_error)) {
               $$map_error = 'navmap';
           }
           return;
       }
       my %symbx = ();
       my @titles = ();
       my $minder = 0;
   
       # Gather every sequence that has problems.
       my @sequences = $navmap->retrieveResources(undef, sub { shift->is_map(); },
          1,0,1);
       for my $sequence ($navmap->getById('0.0'), @sequences) {
    if ($navmap->hasResource($sequence, sub { shift->is_gradable(); }, 0) ) {
       my $title = $minder.'.'.
    &HTML::Entities::encode($sequence->compTitle(),'"\'&');
       push(@titles, $title); # minder in case two titles are identical
       $symbx{$title} = &HTML::Entities::encode($sequence->symb(),'"\'&');
       $minder++;
    }
       }
       return \@titles,\%symbx;
   }
   
 #-------------------------- Menu interface -------------------------  
 #  #
 #--- Show a Grading Menu button - Calls the next routine ---  #--- Displays a page/sequence w/wo problems, w/wo submissions
 sub show_grading_menu_form {  sub displayPage {
     my ($symb,$url)=@_;      my ($request,$symb) = @_;
     my $result.='<form action="/adm/grades" method="post">'."\n".      my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
  '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".      my $cnum      = $env{"course.$env{'request.course.id'}.num"};
  '<input type="hidden" name="url" value="'.$url.'" />'."\n".      my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
  '<input type="hidden" name="command" value="gradingmenu" />'."\n".      my $pageTitle = $env{'form.page'};
  '<input type="submit" name="submit" value="Grading Menu" />'."\n".      my ($classlist,undef,$fullname) = &getclasslist($getsec,'1');
  '</form>'."\n";      my ($uname,$udom) = split(/:/,$env{'form.student'});
     return $result;      my $usec=$classlist->{$env{'form.student'}}[5];
   
       #need to make sure we have the correct data for later EXT calls, 
       #thus invalidate the cache
       &Apache::lonnet::devalidatecourseresdata(
                    $env{'course.'.$env{'request.course.id'}.'.num'},
                    $env{'course.'.$env{'request.course.id'}.'.domain'});
       &Apache::lonnet::clear_EXT_cache_status();
   
       if (!&canview($usec)) {
           $request->print(
               '<span class="LC_warning">'.
               &mt('Unable to view requested student. ([_1])',
                       $env{'form.student'}).
               '</span>');
           return;
       }
       my $result='<h3><span class="LC_info">&nbsp;'.$env{'form.title'}.'</span></h3>';
       $result.='<h3>&nbsp;'.&mt('Student: [_1]',&nameUserString(undef,$$fullname{$env{'form.student'}},$uname,$udom)).
    '</h3>'."\n";
       $env{'form.CODE'} = uc($env{'form.CODE'});
       if (&Apache::lonnet::validCODE(uc($env{'form.CODE'}))) {
    $result.='<h3>&nbsp;'.&mt('CODE: [_1]',$env{'form.CODE'}).'</h3>'."\n";
       } else {
    delete($env{'form.CODE'});
       }
       &sub_page_js($request);
       $request->print($result);
   
       my $navmap = Apache::lonnavmaps::navmap->new();
       unless (ref($navmap)) {
           $request->print(&navmap_errormsg());
           return;
       }
       my ($mapUrl, $id, $resUrl)=&Apache::lonnet::decode_symb($env{'form.page'});
       my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
       if (!$map) {
    $request->print('<span class="LC_warning">'.&mt('Unable to view requested sequence. ([_1])',$resUrl).'</span>');
    return; 
       }
       my $iterator = $navmap->getIterator($map->map_start(),
    $map->map_finish());
   
       my $studentTable='<form action="/adm/grades" method="post" name="gradePage">'."\n".
    '<input type="hidden" name="command" value="gradeByPage" />'."\n".
    '<input type="hidden" name="fullname" value="'.$$fullname{$env{'form.student'}}.'" />'."\n".
    '<input type="hidden" name="student" value="'.$env{'form.student'}.'" />'."\n".
    '<input type="hidden" name="page"    value="'.$pageTitle.'" />'."\n".
    '<input type="hidden" name="title"   value="'.$env{'form.title'}.'" />'."\n".
    '<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
    '<input type="hidden" name="overRideScore" value="no" />'."\n";
   
       if (defined($env{'form.CODE'})) {
    $studentTable.=
       '<input type="hidden" name="CODE" value="'.$env{'form.CODE'}.'" />'."\n";
       }
       my $checkIcon = '<img alt="'.&mt('Check Mark').
    '" src="'.&Apache::loncommon::lonhttpdurl($request->dir_config('lonIconsURL').'/check.gif').'" height="16" border="0" />';
   
       $studentTable.='&nbsp;<span class="LC_info">'.
           &mt('Problems graded correct by the computer are marked with a [_1] symbol.',$checkIcon).
           '</span>'."\n".
    &Apache::loncommon::start_data_table().
    &Apache::loncommon::start_data_table_header_row().
    '<th>'.&mt('Prob.').'</th>'.
    '<th>&nbsp;'.($env{'form.vProb'} eq 'no' ? &mt('Title') : &mt('Problem Text')).'/'.&mt('Grade').'</th>'.
    &Apache::loncommon::end_data_table_header_row();
   
       &Apache::lonxml::clear_problem_counter();
       my ($depth,$question,$prob) = (1,1,1);
       $iterator->next(); # skip the first BEGIN_MAP
       my $curRes = $iterator->next(); # for "current resource"
       while ($depth > 0) {
           if($curRes == $iterator->BEGIN_MAP) { $depth++; }
           if($curRes == $iterator->END_MAP) { $depth--; }
   
           if (ref($curRes) && $curRes->is_gradable()) {
       my $parts = $curRes->parts();
               my $title = $curRes->compTitle();
       my $symbx = $curRes->symb();
               my $is_tool = ($symbx =~ /ext\.tool$/);
       $studentTable.=
    &Apache::loncommon::start_data_table_row().
    '<td align="center" valign="top" >'.$prob.
    (scalar(@{$parts}) == 1 ? '' 
                           : '<br />('.&mt('[_1]parts',
    scalar(@{$parts}).'&nbsp;').')'
    ).
    '</td>';
       $studentTable.='<td valign="top">';
       my %form = ('CODE' => $env{'form.CODE'},);
               if ($is_tool) {
                   $studentTable.='&nbsp;<b>'.$title.'</b><br />';
               } else {
           if ($env{'form.vProb'} eq 'yes' ) {
       $studentTable.=&show_problem($request,$symbx,$uname,$udom,1,
            undef,'both',\%form);
           } else {
       my $companswer = &Apache::loncommon::get_student_answers($symbx,$uname,$udom,$env{'request.course.id'},%form);
       $companswer =~ s|<form(.*?)>||g;
       $companswer =~ s|</form>||g;
   #    while ($companswer =~ /(<a href\=\"javascript:newWindow.*?Script Vars<\/a>)/s) { #<a href="javascript:newWindow</a>
   #        $companswer =~ s/$1/ /ms;
   #        $request->print('match='.$1."<br />\n");
   #    }
   #    $companswer =~ s|<table border=\"1\">|<table border=\"0\">|g;
       $studentTable.='&nbsp;<b>'.$title.'</b>&nbsp;<br />&nbsp;<b>'.&mt('Correct answer').':</b><br />'.$companswer;
    }
       }
   
       my %record = &Apache::lonnet::restore($symbx,$env{'request.course.id'},$udom,$uname);
   
       if ($env{'form.lastSub'} eq 'datesub') {
    if ($record{'version'} eq '') {
                       my $msg = &mt('No recorded submission for this problem.');
                       if ($is_tool) {
                           $msg = &mt('No recorded transactions for this external tool');
                       }
       $studentTable.='<br />&nbsp;<span class="LC_warning">'.$msg.'</span><br />';
    } else {
       my %responseType = ();
       foreach my $partid (@{$parts}) {
    my @responseIds =$curRes->responseIds($partid);
    my @responseType =$curRes->responseType($partid);
    my %responseIds;
    for (my $i=0;$i<=$#responseIds;$i++) {
       $responseIds{$responseIds[$i]}=$responseType[$i];
    }
    $responseType{$partid} = \%responseIds;
       }
       $studentTable.= &displaySubByDates($symbx,\%record,$parts,\%responseType,$checkIcon,$uname,$udom);
    }
       } elsif ($env{'form.lastSub'} eq 'all') {
    my $last = ($env{'form.lastSub'} eq 'last' ? 'last' : '');
                   my $identifier = (&canmodify($usec)? $prob : ''); 
    $studentTable.=&Apache::loncommon::get_previous_attempt($symbx,$uname,$udom,
    $env{'request.course.id'},
    '','.submission',undef,
                                                                           $usec,$identifier);
    
       }
       if (&canmodify($usec)) {
               $studentTable.=&gradeBox_start();
    foreach my $partid (@{$parts}) {
       $studentTable.=&gradeBox($request,$symbx,$uname,$udom,$question,$partid,\%record);
       $studentTable.='<input type="hidden" name="q_'.$question.'" value="'.$partid.'" />'."\n";
       $question++;
    }
               $studentTable.=&gradeBox_end();
    $prob++;
       }
       $studentTable.='</td></tr>';
   
    }
           $curRes = $iterator->next();
       }
       my $disabled;
       unless (&canmodify($usec)) {
           $disabled = ' disabled="disabled"';
       }
   
       $studentTable.=
           '</table>'."\n".
           '<input type="button" value="'.&mt('Save').'"'.$disabled.' '.
           'onclick="javascript:checkSubmitPage(this.form,'.$question.');" />'.
           '</form>'."\n";
       $request->print($studentTable);
   
       return '';
 }  }
   
 #--- Displays the main menu page -------  sub displaySubByDates {
 sub gradingmenu {      my ($symb,$record,$parts,$responseType,$checkIcon,$uname,$udom) = @_;
     my ($request) = @_;      my $isCODE=0;
     my ($symb,$url)=&get_symb_and_url($request);      my $isTask = ($symb =~/\.task$/);
     if (!$symb) {return '';}      my $is_tool = ($symb =~/\.tool$/);
     my $result='<h3>&nbsp;<font color="#339933">Select a Grading Method</font></h3>';      if (exists($record->{'resource.CODE'})) { $isCODE=1; }
     $result.='<table border="0">';      my $studentTable=&Apache::loncommon::start_data_table().
     $result.='<tr><td colspan=3><font size=+1><b>Resource: </b>'.$url.'</font></td></tr>';   &Apache::loncommon::start_data_table_header_row().
     my ($partlist,$handgrade) = &response_type($url);   '<th>'.&mt('Date/Time').'</th>'.
     my ($resptype,$hdgrade)=('','no');   ($isCODE?'<th>'.&mt('CODE').'</th>':'').
     for (sort keys(%$handgrade)) {          ($isTask?'<th>'.&mt('Version').'</th>':'').
  my ($responsetype,$handgrade)=split(/:/,$$handgrade{$_});   '<th>'.($is_tool?&mt('Grade'):&mt('Submission')).'</th>'.
  $resptype = $responsetype;   '<th>'.&mt('Status').'</th>'.
  $hdgrade = $handgrade if ($handgrade eq 'yes');   &Apache::loncommon::end_data_table_header_row();
  $result.='<tr><td><b>Part </b>'.(split(/_/))[0].'</td>'.      my ($version);
     '<td><b>Type: </b>'.$responsetype.'</td>'.      my %mark;
     '<td><b>Handgrade: </b>'.$handgrade.'</font></td></tr>';      my %orders;
     }      $mark{'correct_by_student'} = $checkIcon;
     $result.='</table>';      if (!exists($$record{'1:timestamp'})) {
     $result.=&view_edit_entire_class_form($symb,$url).'<br />';          if ($is_tool) {
     $result.=&upcsvScores_form($symb,$url).'<br />';              return '<br />&nbsp;<span class="LC_warning">'.&mt('No grade passed back.').'</span><br />';
     $result.=&viewGradeaStu_form($symb,$url,$resptype,$hdgrade).'<br />';          } else {
     $result.=&verifyReceipt_form($symb,$url)               return '<br />&nbsp;<span class="LC_warning">'.&mt('Nothing submitted - no attempts.').'</span><br />';
  if ((&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'})) && ($symb));          }
       }
   
       my $interaction;
       my $no_increment = 1;
       my (%lastrndseed,%lasttype);
       for ($version=1;$version<=$$record{'version'};$version++) {
    my $timestamp = 
       &Apache::lonlocal::locallocaltime($$record{$version.':timestamp'});
    if (exists($$record{$version.':resource.0.version'})) {
       $interaction = $$record{$version.':resource.0.version'};
    }
           if ($isTask && $env{'form.previousversion'}) {
               next unless ($interaction == $env{'form.previousversion'});
           }
    my $where = ($isTask ? "$version:resource.$interaction"
                : "$version:resource");
    $studentTable.=&Apache::loncommon::start_data_table_row().
       '<td>'.$timestamp.'</td>';
    if ($isCODE) {
       $studentTable.='<td>'.$record->{$version.':resource.CODE'}.'</td>';
    }
           if ($isTask) {
               $studentTable.='<td>'.$interaction.'</td>';
           }
    my @versionKeys = split(/\:/,$$record{$version.':keys'});
    my @displaySub = ();
    foreach my $partid (@{$parts}) {
               my ($hidden,$type);
               $type = $$record{$version.':resource.'.$partid.'.type'};
               if (($type eq 'anonsurvey') || ($type eq 'anonsurveycred')) {
                   $hidden = 1;
               }
               my @matchKey;
               if ($isTask) {
                   @matchKey = sort(grep(/^resource\.\d+\.\Q$partid\E\.award$/,@versionKeys));
               } elsif ($is_tool) {
                   @matchKey = sort(grep(/^resource\.\Q$partid\E\.awarded$/,@versionKeys));
               } else {
                   @matchKey = sort(grep(/^resource\.\Q$partid\E\..*?\.submission$/,@versionKeys));
               }
   #    next if ($$record{"$version:resource.$partid.solved"} eq '');
       my $display_part=&get_display_part($partid,$symb);
       foreach my $matchKey (@matchKey) {
    if (exists($$record{$version.':'.$matchKey}) &&
       $$record{$version.':'.$matchKey} ne '') {
                       if ($is_tool) {
                           $displaySub[0].=$$record{"$version:resource.$partid.awarded"};
                       } else {
           my ($responseId)= ($isTask ? ($matchKey=~ /^resource\.(.*?)\.\Q$partid\E\.award$/)
                      : ($matchKey=~ /^resource\.\Q$partid\E\.(.*?)\.submission$/));
                           $displaySub[0].='<span class="LC_nobreak">';
                           $displaySub[0].='<b>'.&mt('Part: [_1]',$display_part).'</b>'
                                          .' <span class="LC_internal_info">'
                                          .'('.&mt('Response ID: [_1]',$responseId).')'
                                          .'</span>'
                                          .' <b>';
                           if ($hidden) {
                               $displaySub[0].= &mt('Anonymous Survey').'</b>';
                           } else {
                               my ($trial,$rndseed,$newvariation);
                               if ($type eq 'randomizetry') {
                                   $trial = $$record{"$where.$partid.tries"};
                                   $rndseed = $$record{"$where.$partid.rndseed"};
                               }
               if ($$record{"$where.$partid.tries"} eq '') {
           $displaySub[0].=&mt('Trial not counted');
               } else {
           $displaySub[0].=&mt('Trial: [_1]',
           $$record{"$where.$partid.tries"});
                                   if (($rndseed ne '') && ($lastrndseed{$partid} ne '')) {
                                       if (($rndseed ne $lastrndseed{$partid}) &&
                                           (($type eq 'randomizetry') || ($lasttype{$partid} eq 'randomizetry'))) {
                                           $newvariation = '&nbsp;('.&mt('New variation this try').')';
                                       }
                                   }
                                   $lastrndseed{$partid} = $rndseed;
                                   $lasttype{$partid} = $type;
               }
               my $responseType=($isTask ? 'Task'
                                                 : $responseType->{$partid}->{$responseId});
               if (!exists($orders{$partid})) { $orders{$partid}={}; }
               if ((!exists($orders{$partid}->{$responseId})) || ($trial)) {
           $orders{$partid}->{$responseId}=
               &get_order($partid,$responseId,$symb,$uname,$udom,
                                                  $no_increment,$type,$trial,$rndseed);
               }
               $displaySub[0].='</b>'.$newvariation.'</span>'; # /nobreak
               $displaySub[0].='&nbsp; '.
           &cleanRecord($$record{$version.':'.$matchKey},$responseType,$symb,$partid,$responseId,$record,$orders{$partid}->{$responseId},"$version:",$uname,$udom,$type,$trial,$rndseed).'<br />';
                           }
                       }
    }
       }
       if (exists($$record{"$where.$partid.checkedin"})) {
    $displaySub[1].=&mt('Checked in by [_1] into slot [_2]',
       $$record{"$where.$partid.checkedin"},
       $$record{"$where.$partid.checkedin.slot"}).
    '<br />';
       }
       if (exists $$record{"$where.$partid.award"}) {
    $displaySub[1].='<b>'.&mt('Part:').'</b>&nbsp;'.$display_part.' &nbsp;'.
       lc($$record{"$where.$partid.award"}).' '.
       $mark{$$record{"$where.$partid.solved"}}.
       '<br />';
       } elsif (($is_tool) && (exists($$record{"$version:resource.$partid.solved"}))) {
    if ($$record{"$version:resource.$partid.solved"} =~ /^(in|)correct_by_passback$/) {
       $displaySub[1].=&mt('Grade passed back by external tool');
    }
       }
       if (exists $$record{"$where.$partid.regrader"}) {
    $displaySub[2].=$$record{"$where.$partid.regrader"};
    unless ($is_tool) {
       $displaySub[2].=' (<b>'.&mt('Part').':</b> '.$display_part.')';
    }
       } elsif ($$record{"$version:resource.$partid.regrader"} =~ /\S/) {
    $displaySub[2].=
       $$record{"$version:resource.$partid.regrader"};
                   unless ($is_tool) {
       $displaySub[2].=' (<b>'.&mt('Part').':</b> '.$display_part.')';
                   }
       }
    }
    # needed because old essay regrader has not parts info
    if (exists $$record{"$version:resource.regrader"}) {
       $displaySub[2].=$$record{"$version:resource.regrader"};
    }
    $studentTable.='<td>'.$displaySub[0].'&nbsp;</td><td>'.$displaySub[1];
    if ($displaySub[2]) {
       $studentTable.=&mt('Manually graded by [_1]',$displaySub[2]);
    }
    $studentTable.='&nbsp;</td>'.
       &Apache::loncommon::end_data_table_row();
       }
       $studentTable.=&Apache::loncommon::end_data_table();
       return $studentTable;
   }
   
   sub updateGradeByPage {
       my ($request,$symb) = @_;
   
       my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
       my $cnum      = $env{"course.$env{'request.course.id'}.num"};
       my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
       my $pageTitle = $env{'form.page'};
       my ($classlist,undef,$fullname) = &getclasslist($getsec,'1');
       my ($uname,$udom) = split(/:/,$env{'form.student'});
       my $usec=$classlist->{$env{'form.student'}}[5];
       if (!&canmodify($usec)) {
    $request->print('<span class="LC_warning">'.&mt('Unable to modify requested student ([_1])',$env{'form.student'}).'</span>');
    return;
       }
       my $result='<h3><span class="LC_info">&nbsp;'.$env{'form.title'}.'</span></h3>';
       $result.='<h3>&nbsp;'.&mt('Student: ').&nameUserString(undef,$env{'form.fullname'},$uname,$udom).
    '</h3>'."\n";
   
       $request->print($result);
   
   
       my $navmap = Apache::lonnavmaps::navmap->new();
       unless (ref($navmap)) {
           $request->print(&navmap_errormsg());
           return;
       }
       my ($mapUrl, $id, $resUrl) = &Apache::lonnet::decode_symb( $env{'form.page'});
       my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
       if (!$map) {
    $request->print('<span class="LC_warning">'.&mt('Unable to grade requested sequence ([_1]).',$resUrl).'</span>');
    return; 
       }
       my $iterator = $navmap->getIterator($map->map_start(),
    $map->map_finish());
   
       my $studentTable=
    &Apache::loncommon::start_data_table().
    &Apache::loncommon::start_data_table_header_row().
    '<th align="center">&nbsp;'.&mt('Prob.').'&nbsp;</th>'.
    '<th>&nbsp;'.&mt('Title').'&nbsp;</th>'.
    '<th>&nbsp;'.&mt('Previous Score').'&nbsp;</th>'.
    '<th>&nbsp;'.&mt('New Score').'&nbsp;</th>'.
    &Apache::loncommon::end_data_table_header_row();
   
       $iterator->next(); # skip the first BEGIN_MAP
       my $curRes = $iterator->next(); # for "current resource"
       my ($depth,$question,$prob,$changeflag,$hideflag)= (1,1,1,0,0);
       while ($depth > 0) {
           if($curRes == $iterator->BEGIN_MAP) { $depth++; }
           if($curRes == $iterator->END_MAP) { $depth--; }
   
           if (ref($curRes) && $curRes->is_problem()) {
       my $parts = $curRes->parts();
               my $title = $curRes->compTitle();
       my $symbx = $curRes->symb();
       $studentTable.=
    &Apache::loncommon::start_data_table_row().
    '<td align="center" valign="top" >'.$prob.
    (scalar(@{$parts}) == 1 ? '' 
                                           : '<br />('.&mt('[quant,_1,part]',scalar(@{$parts}))
    .')').'</td>';
       $studentTable.='<td valign="top">&nbsp;<b>'.$title.'</b>&nbsp;</td>';
   
       my %newrecord=();
       my @displayPts=();
               my %aggregate = ();
               my $aggregateflag = 0;
               my %queueable;
               if ($env{'form.HIDE'.$prob}) {
                   my %record = &Apache::lonnet::restore($symbx,$env{'request.course.id'},$udom,$uname);
                   my ($version,$parts) = split(/:/,$env{'form.HIDE'.$prob},2);
                   my $numchgs = &makehidden($version,$parts,\%record,$symbx,$udom,$uname,1);
                   $hideflag += $numchgs;
               }
       foreach my $partid (@{$parts}) {
    my $newpts = $env{'form.GD_BOX'.$question.'_'.$partid};
    my $oldpts = $env{'form.oldpts'.$question.'_'.$partid};
                   my @types = $curRes->responseType($partid);
                   if (grep(/^essay$/,@types)) {
                       $queueable{$partid} = 1;
                   } else {
                       my @ids = $curRes->responseIds($partid);
                       for (my $i=0; $i < scalar(@ids); $i++) {
                           my $hndgrd = &Apache::lonnet::EXT('resource.'.$partid.'_'.$ids[$i].
                                                             '.handgrade',$symb);
                           if (lc($hndgrd) eq 'yes') {
                               $queueable{$partid} = 1;
                               last;
                           }
                       }
                   }
    my $wgt = $env{'form.WGT'.$question.'_'.$partid} != 0 ? 
       $env{'form.WGT'.$question.'_'.$partid} : 1;
    my $partial = $newpts/$wgt;
    my $score;
    if ($partial > 0) {
       $score = 'correct_by_override';
    } elsif ($newpts ne '') { #empty is taken as 0
       $score = 'incorrect_by_override';
    }
    my $dropMenu = $env{'form.GD_SEL'.$question.'_'.$partid};
    if ($dropMenu eq 'excused') {
       $partial = '';
       $score = 'excused';
    } elsif ($dropMenu eq 'reset status'
    && $env{'form.solved'.$question.'_'.$partid} ne '') { #update only if previous record exists
       $newrecord{'resource.'.$partid.'.tries'} = 0;
       $newrecord{'resource.'.$partid.'.solved'} = '';
       $newrecord{'resource.'.$partid.'.award'} = '';
       $newrecord{'resource.'.$partid.'.awarded'} = 0;
       $newrecord{'resource.'.$partid.'.regrader'} = "$env{'user.name'}:$env{'user.domain'}";
       $changeflag++;
       $newpts = '';
                       
                       my $aggtries =  $env{'form.aggtries'.$question.'_'.$partid};
                       my $totaltries = $env{'form.totaltries'.$question.'_'.$partid};
                       my $solvedstatus = $env{'form.solved'.$question.'_'.$partid};
                       if ($aggtries > 0) {
                           &decrement_aggs($symbx,$partid,\%aggregate,$aggtries,$totaltries,$solvedstatus);
                           $aggregateflag = 1;
                       }
    }
    my $display_part=&get_display_part($partid,$curRes->symb());
    my $oldstatus = $env{'form.solved'.$question.'_'.$partid};
    $displayPts[0].='&nbsp;<b>'.&mt('Part').':</b> '.$display_part.' = '.
       (($oldstatus eq 'excused') ? 'excused' : $oldpts).
       '&nbsp;<br />';
    $displayPts[1].='&nbsp;<b>'.&mt('Part').':</b> '.$display_part.' = '.
        (($score eq 'excused') ? 'excused' : $newpts).
       '&nbsp;<br />';
    $question++;
    next if ($dropMenu eq 'reset status' || ($newpts eq $oldpts && $score ne 'excused'));
   
    $newrecord{'resource.'.$partid.'.awarded'}  = $partial if $partial ne '';
    $newrecord{'resource.'.$partid.'.solved'}   = $score if $score ne '';
    $newrecord{'resource.'.$partid.'.regrader'} = "$env{'user.name'}:$env{'user.domain'}"
       if (scalar(keys(%newrecord)) > 0);
   
    $changeflag++;
       }
       if (scalar(keys(%newrecord)) > 0) {
    my %record = 
       &Apache::lonnet::restore($symbx,$env{'request.course.id'},
        $udom,$uname);
   
    if (&Apache::lonnet::validCODE($env{'form.CODE'})) {
       $newrecord{'resource.CODE'} = $env{'form.CODE'};
    } elsif (&Apache::lonnet::validCODE($record{'resource.CODE'})) {
       $newrecord{'resource.CODE'} = '';
    }
    &Apache::lonnet::cstore(\%newrecord,$symbx,$env{'request.course.id'},
    $udom,$uname);
    %record = &Apache::lonnet::restore($symbx,
      $env{'request.course.id'},
      $udom,$uname);
    &check_and_remove_from_queue($parts,\%record,undef,$symbx,
        $cdom,$cnum,$udom,$uname,\%queueable);
       }
       
               if ($aggregateflag) {
                   &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
                         $env{'course.'.$env{'request.course.id'}.'.domain'},
                         $env{'course.'.$env{'request.course.id'}.'.num'});
               }
   
       $studentTable.='<td valign="top">'.$displayPts[0].'</td>'.
    '<td valign="top">'.$displayPts[1].'</td>'.
    &Apache::loncommon::end_data_table_row();
   
       $prob++;
    }
           $curRes = $iterator->next();
       }
   
       $studentTable.=&Apache::loncommon::end_data_table();
       my $grademsg=($changeflag == 0 ? &mt('No score was changed or updated.') :
     &mt('The scores were changed for [quant,_1,problem].',
     $changeflag).'<br />');
       my $hidemsg=($hideflag == 0 ? '' :
                    &mt('Submissions were marked "hidden" for [quant,_1,transaction].',
                        $hideflag).'<br />');
       $request->print($hidemsg.$grademsg.$studentTable);
   
       return '';
   }
   
   #-------- end of section for handling grading by page/sequence ---------
   #
   #-------------------------------------------------------------------
   
   #-------------------- Bubblesheet (Scantron) Grading -------------------
   #
   #------ start of section for handling grading by page/sequence ---------
   
   =pod
   
   =head1 Bubble sheet grading routines
   
     For this documentation:
   
      'scanline' refers to the full line of characters
      from the file that we are parsing that represents one entire sheet
   
      'bubble line' refers to the data
      representing the line of bubbles that are on the physical bubblesheet
   
   
   The overall process is that a scanned in bubblesheet data is uploaded
   into a course. When a user wants to grade, they select a
   sequence/folder of resources, a file of bubblesheet info, and pick
   one of the predefined configurations for what each scanline looks
   like.
   
   Next each scanline is checked for any errors of either 'missing
   bubbles' (it's an error because it may have been mis-scanned
   because too light bubbling), 'double bubble' (each bubble line should
   have no more than one letter picked), invalid or duplicated CODE,
   invalid student/employee ID
   
   If the CODE option is used that determines the randomization of the
   homework problems, either way the student/employee ID is looked up into a
   username:domain.
   
   During the validation phase the instructor can choose to skip scanlines. 
   
   After the validation phase, there are now 3 bubblesheet files
   
     scantron_original_filename (unmodified original file)
     scantron_corrected_filename (file where the corrected information has replaced the original information)
     scantron_skipped_filename (contains the exact text of scanlines that where skipped)
   
   Also there is a separate hash nohist_scantrondata that contains extra
   correction information that isn't representable in the bubblesheet
   file (see &scantron_getfile() for more information)
   
   After all scanlines are either valid, marked as valid or skipped, then
   foreach line foreach problem in the picked sequence, an ssi request is
   made that simulates a user submitting their selected letter(s) against
   the homework problem.
   
   =over 4
   
   
   
   =item defaultFormData
   
     Returns html hidden inputs used to hold context/default values.
   
    Arguments:
     $symb - $symb of the current resource 
   
   =cut
   
   sub defaultFormData {
       my ($symb)=@_;
       return '<input type="hidden" name="symb" value="'.&Apache::lonenc::check_encrypt($symb).'" />';
   }
   
   
   =pod 
   
   =item getSequenceDropDown
   
      Return html dropdown of possible sequences to grade
     
    Arguments:
      $symb - $symb of the current resource
      $map_error - ref to scalar which will container error if
                   $navmap object is unavailable in &getSymbMap().
   
   =cut
   
   sub getSequenceDropDown {
       my ($symb,$map_error)=@_;
       my $result='<select name="selectpage">'."\n";
       my ($titles,$symbx) = &getSymbMap($map_error);
       if (ref($map_error)) {
           return if ($$map_error);
       }
       my ($curpage)=&Apache::lonnet::decode_symb($symb); 
       my $ctr=0;
       foreach (@$titles) {
    my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
    $result.='<option value="'.$$symbx{$_}.'" '.
       ($$symbx{$_} =~ /$curpage$/ ? 'selected="selected"' : '').
       '>'.$showtitle.'</option>'."\n";
    $ctr++;
       }
       $result.= '</select>';
     return $result;      return $result;
 }  }
   
 #--- Menu for grading a section or the whole class ---  my %bubble_lines_per_response;     # no. bubble lines for each response.
 sub view_edit_entire_class_form {                                     # key is zero-based index - 0, 1, 2 ...
     my ($symb,$url)=@_;  
     my ($classlist,$sections,undef) = &getclasslist('all','0');  my %first_bubble_line;             # First bubble line no. for each bubble.
     my $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";  
     $result.='<table width=100% border=0><tr bgcolor="#e6ffff"><td>'."\n";  my %subdivided_bubble_lines;       # no. bubble lines for optionresponse, 
     $result.='&nbsp;<b>Grade Entire Section or Class</b></td></tr>'."\n";                                     # matchresponse or rankresponse, where 
     $result.='<tr bgcolor=#ffffe6><td>'."\n";                                     # an individual response can have multiple 
     $result.='<form action="/adm/grades" method="post">'."\n".                                     # lines
  '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".  
  '<input type="hidden" name="url" value="'.$url.'" />'."\n".  my %responsetype_per_response;     # responsetype for each response
  '<input type="hidden" name="command" value="viewgrades" />'."\n";  
     $result.='&nbsp;<b>Select section:</b> <select name="section">'."\n";  my %masterseq_id_responsenum;      # src_id (e.g., 12.3_0.11 etc.) for each
     if (ref($sections)) {                                     # numbered response. Needed when randomorder
  foreach (sort (@$sections)) {                                     # or randompick are in use. Key is ID, value 
     $result.= '<option>'.$_.'</option>'."\n";                                     # is response number.
  }  
     }  # Save and restore the bubble lines array to the form env.
     $result.='<option selected="on">all</select>'."<br />\n";  
     $result.='&nbsp;<input type="button" onClick="submit();" value="Grade" /></form>'."\n";  
     $result.='</td></tr></table>'."\n";  sub save_bubble_lines {
     $result.='</td></tr></table>'."\n";      foreach my $line (keys(%bubble_lines_per_response)) {
    $env{"form.scantron.bubblelines.$line"}  = $bubble_lines_per_response{$line};
    $env{"form.scantron.first_bubble_line.$line"} =
       $first_bubble_line{$line};
           $env{"form.scantron.sub_bubblelines.$line"} = 
               $subdivided_bubble_lines{$line};
           $env{"form.scantron.responsetype.$line"} =
               $responsetype_per_response{$line};
       }
       foreach my $resid (keys(%masterseq_id_responsenum)) {
           my $line = $masterseq_id_responsenum{$resid};
           $env{"form.scantron.residpart.$line"} = $resid;
       }
   }
   
   
   sub restore_bubble_lines {
       my $line = 0;
       %bubble_lines_per_response = ();
       %masterseq_id_responsenum = ();
       while ($env{"form.scantron.bubblelines.$line"}) {
    my $value = $env{"form.scantron.bubblelines.$line"};
    $bubble_lines_per_response{$line} = $value;
    $first_bubble_line{$line}  =
       $env{"form.scantron.first_bubble_line.$line"};
           $subdivided_bubble_lines{$line} =
               $env{"form.scantron.sub_bubblelines.$line"};
           $responsetype_per_response{$line} =
               $env{"form.scantron.responsetype.$line"};
           my $id = $env{"form.scantron.residpart.$line"};
           $masterseq_id_responsenum{$id} = $line;
    $line++;
       }
   }
   
   =pod 
   
   =item scantron_filenames
   
      Returns a list of the scantron files in the current course 
   
   =cut
   
   sub scantron_filenames {
       my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
       my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
       my $getpropath = 1;
       my ($dirlist,$listerror) = &Apache::lonnet::dirlist('userfiles',$cdom,
                                                           $cname,$getpropath);
       my @possiblenames;
       if (ref($dirlist) eq 'ARRAY') {
           foreach my $filename (sort(@{$dirlist})) {
       ($filename)=split(/&/,$filename);
       if ($filename!~/^scantron_orig_/) { next ; }
       $filename=~s/^scantron_orig_//;
       push(@possiblenames,$filename);
           }
       }
       return @possiblenames;
   }
   
   =pod 
   
   =item scantron_uploads
   
      Returns  html drop-down list of scantron files in current course.
   
    Arguments:
      $file2grade - filename to set as selected in the dropdown
   
   =cut
   
   sub scantron_uploads {
       my ($file2grade) = @_;
       my $result= '<select name="scantron_selectfile">';
       $result.="<option></option>";
       foreach my $filename (sort(&scantron_filenames())) {
    $result.="<option".($filename eq $file2grade ? ' selected="selected"':'').">$filename</option>\n";
       }
       $result.="</select>";
     return $result;      return $result;
 }  }
   
 #--- Menu to upload a csv scores ---  =pod 
 sub upcsvScores_form {  
     my ($symb,$url) = @_;  =item scantron_scantab
     if (!$symb) {return '';}  
     my $result = '<script type="text/javascript" language="javascript">'."\n".    Returns html drop down of the scantron formats in the scantronformat.tab
  '  function checkUpload(formname) {'."\n".    file.
  '    if (formname.upfile.value == "") {'."\n".  
  '       alert("Please use the browse button to select a file from your local directory.");'."\n".  =cut
  '       return false;'."\n".  
  '    }'."\n".  sub scantron_scantab {
  '    formname.submit();'."\n".      my $result='<select name="scantron_format">'."\n";
  '  }'."\n".      $result.='<option></option>'."\n";
  '</script>'."\n";      my @lines = &Apache::lonnet::get_scantronformat_file();
       if (@lines > 0) {
     $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";          foreach my $line (@lines) {
     $result.='<table width=100% border=0><tr bgcolor="#e6ffff"><td>'."\n";              next if (($line =~ /^\#/) || ($line eq ''));
     $result.='&nbsp;<b>Specify a file containing the class scores for above resource</b></td></tr>'."\n";      my ($name,$descrip)=split(/:/,$line);
     $result.='<tr bgcolor=#ffffe6><td>'."\n";      $result.='<option value="'.$name.'">'.$descrip.'</option>'."\n";
     my $upfile_select=&Apache::loncommon::upfile_select_html();          }
   $result.=<<ENDUPFORM;      }
 <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">      $result.='</select>'."\n";
 <input type="hidden" name="symb" value="$symb" />  
 <input type="hidden" name="url" value="$url" />  
 <input type="hidden" name="command" value="csvuploadmap" />  
 $upfile_select  
 <br />&nbsp;<input type="button" onClick="javascript:checkUpload(this.form);" value="Upload Grades" />  
 </form>  
 ENDUPFORM  
     $result.='</td></tr></table>'."\n";  
     $result.='</td></tr></table>'."\n";  
     return $result;      return $result;
 }  }
   
 #--- Handgrading problems ---  =pod 
 sub viewGradeaStu_form {  
     my ($symb,$url,$response,$handgrade) = @_;  =item scantron_CODElist
     my ($classlist,$sections) = &getclasslist('all','0');  
     my $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";    Returns html drop down of the saved CODE lists from current course,
     $result.='<table width=100% border=0><tr bgcolor="#e6ffff"><td>'."\n";    generated from earlier printings.
     $result.='&nbsp;<b>';  
     if ($handgrade eq 'yes') {  =cut
  $result.="View/Grade ";  
     } else {  sub scantron_CODElist {
  $result.="View ";      my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
     }      my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
     $result.='an Individual Student\'s Submission</b></td></tr>'."\n";      my @names=&Apache::lonnet::getkeys('CODEs',$cdom,$cnum);
     $result.='<tr bgcolor=#ffffe6><td>'."\n";      my $namechoice='<option></option>';
     $result.='<form action="/adm/grades" method="post">'."\n".      foreach my $name (sort {uc($a) cmp uc($b)} @names) {
  '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".   if ($name =~ /^error: 2 /) { next; }
  '<input type="hidden" name="url" value="'.$url.'" />'."\n".   if ($name =~ /^type\0/) { next; }
  '<input type="hidden" name="response" value="'.$response.'" />'."\n".   $namechoice.='<option value="'.$name.'">'.$name.'</option>';
  '<input type="hidden" name="handgrade" value="'.$handgrade.'" />'."\n".  
  '<input type="hidden" name="showgrading" value="yes" />'."\n".  
  '<input type="hidden" name="command" value="submission" />'."\n";  
   
     $result.='&nbsp;<b>Select section:</b> <select name="section">'."\n";  
     if (ref($sections)) {  
  foreach (sort (@$sections)) {$result.='<option>'.$_.'</option>'."\n";}  
     }  
     $result.= '<option selected="on">all</select>'."\n";  
     $result.='&nbsp;&nbsp;<b>Display students who has: </b>'.  
  '<input type="radio" name="submitonly" value="yes" checked> submitted'.  
  '<input type="radio" name="submitonly" value="all"> everybody <br />';  
     if (ref($sections)) {  
  $result.='&nbsp;(Section "no" implies the students were not assigned a section.)<br />'   
     if (grep /no/,@$sections);  
     }      }
       $namechoice='<select name="scantron_CODElist">'.$namechoice.'</select>';
       return $namechoice;
   }
   
   =pod 
   
   =item scantron_CODEunique
   
     Returns the html for "Each CODE to be used once" radio.
   
     $result.='<br />&nbsp;<input type="button" onClick="submit();" value="';  =cut
     if ($handgrade eq 'yes') {  
  $result.="View/Grade";  sub scantron_CODEunique {
     } else {      my $result='<span class="LC_nobreak">
  $result.="View";                   <label><input type="radio" name="scantron_CODEunique"
     }                          value="yes" checked="checked" />'.&mt('Yes').' </label>
     $result.='" />'."\n".'</form>'."\n";                  </span>
     $result.='</td></tr></table>'."\n";                  <span class="LC_nobreak">
     $result.='</td></tr></table>'."\n";                   <label><input type="radio" name="scantron_CODEunique"
                           value="no" />'.&mt('No').' </label>
                   </span>';
     return $result;      return $result;
 }  }
   
 #--- Form to input a receipt number ---  =pod 
 sub verifyReceipt_form {  
     my ($symb,$url) = @_;  =item scantron_selectphase
     my $result = '<script type="text/javascript" language="javascript">'."\n".  
  '  function checkEntry(formname) {'."\n".    Generates the initial screen to start the bubblesheet process.
  '    var receipt = formname.receipt.value;'."\n".    Allows for - starting a grading run.
  '    if (isNaN(receipt) || receipt == "") {'."\n".               - downloading existing scan data (original, corrected
  '       alert("Please enter a receipt number given by a student in the box.");'."\n".                                                  or skipped info)
  '       return false;'."\n".  
  '    }'."\n".               - uploading new scan data
  '    formname.submit();'."\n".  
  '  }'."\n".   Arguments:
  '</script>'."\n";    $r          - The Apache request object
     $file2grade - name of the file that contain the scanned data to score
     my $hostver=unpack("%32C*",$Apache::lonnet::perlvar{'lonHostID'});  
   =cut
     $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";  
     $result.='<table width=100% border=0><tr><td bgcolor=#e6ffff>'."\n";  sub scantron_selectphase {
     $result.='&nbsp;<b>Verify a Submission Receipt Issued by this Server</td></tr>'."\n";      my ($r,$file2grade,$symb) = @_;
     $result.='<tr bgcolor=#ffffe6><td>'."\n";      if (!$symb) {return '';}
     $result.='<form action="/adm/grades" method="post" name="verifyform">'."\n";      my $map_error;
     $result.='&nbsp;<tt>'.$hostver.'-<input type="text" name="receipt" size="4"></tt><br />'."\n";      my $sequence_selector=&getSequenceDropDown($symb,\$map_error);
     $result.='&nbsp;<input type="button" onClick="javascript:checkEntry(this.form);"'.      if ($map_error) {
  ' value="Verify Receipt">'."\n";          $r->print('<br />'.&navmap_errormsg().'<br />');
     $result.='<input type="hidden" name="command" value="verify">'."\n";          return;
     if ($ENV{'form.url'}) {      }
  $result.='<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />';      my $default_form_data=&defaultFormData($symb);
     }      my $file_selector=&scantron_uploads($file2grade);
     if ($ENV{'form.symb'}) {      my $format_selector=&scantron_scantab();
  $result.='<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />';      my $CODE_selector=&scantron_CODElist();
     }      my $CODE_unique=&scantron_CODEunique();
     $result.='</form>';      my $result;
     $result.='</td></tr></table>'."\n";  
     $result.='</td></tr></table>'."\n";      $ssi_error = 0;
   
       if (&Apache::lonnet::allowed('usc',$env{'request.role.domain'}) || $perm{'usc'}) {
   
    # Chunk of form to prompt for a scantron file upload.
   
           $r->print('
       <br />');
       my $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
       my $cnum= $env{'course.'.$env{'request.course.id'}.'.num'};
       my $csec= $env{'request.course.sec'};
       my $alertmsg = &mt('Please use the browse button to select a file from your local directory.');
       &js_escape(\$alertmsg);
       my ($formatoptions,$formattitle,$formatjs) = &scantron_upload_dataformat($cdom);
       $r->print(&Apache::lonhtmlcommon::scripttag('
       function checkUpload(formname) {
    if (formname.upfile.value == "") {
       alert("'.$alertmsg.'");
       return false;
    }
    formname.submit();
       }'."\n".$formatjs));
       $r->print('
                 <form enctype="multipart/form-data" action="/adm/grades" name="rules" method="post">
                   '.$default_form_data.'
                   <input name="courseid" type="hidden" value="'.$cnum.'" />
                   <input name="coursesec" type="hidden" value="'.$csec.'" />
                   <input name="domainid" type="hidden" value="'.$cdom.'" />
                   <input name="command" value="scantronupload_save" type="hidden" />
                 '.&Apache::loncommon::start_data_table('LC_scantron_action').'
                 '.&Apache::loncommon::start_data_table_header_row().'
                   <th>
                   &nbsp;'.&mt('Specify a bubblesheet data file to upload.').'
                   </th>
                 '.&Apache::loncommon::end_data_table_header_row().'
                 '.&Apache::loncommon::start_data_table_row().'
               <td>
                   '.&mt('File to upload: [_1]','<input type="file" name="upfile" size="50" />').'<br />'."\n");
       if ($formatoptions) {
           $r->print('</td>
                    '.&Apache::loncommon::end_data_table_row().'
                    '.&Apache::loncommon::start_data_table_row().'
                    <td>'.$formattitle.('&nbsp;'x2).$formatoptions.'
                    </td>
                    '.&Apache::loncommon::end_data_table_row().'
                    '.&Apache::loncommon::start_data_table_row().'
                    <td>'
           );
       } else {
           $r->print(' <br />');
       }
       $r->print('<input type="button" onclick="javascript:checkUpload(this.form);" value="'.&mt('Upload Bubblesheet Data').'" />
                 </td>
                '.&Apache::loncommon::end_data_table_row().'
                '.&Apache::loncommon::end_data_table().'
                </form>'
       );
   
       }
   
       # Chunk of form to prompt for a file to grade and how:
   
       $result.= '
       <br />
       <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantron_process">
       <input type="hidden" name="command" value="scantron_warning" />
       '.$default_form_data.'
       '.&Apache::loncommon::start_data_table('LC_scantron_action').'
          '.&Apache::loncommon::start_data_table_header_row().'
               <th colspan="2">
                 &nbsp;'.&mt('Specify file and which Folder/Sequence to grade').'
               </th>
          '.&Apache::loncommon::end_data_table_header_row().'
          '.&Apache::loncommon::start_data_table_row().'
               <td> '.&mt('Sequence to grade:').' </td><td> '.$sequence_selector.' </td>
          '.&Apache::loncommon::end_data_table_row().'
          '.&Apache::loncommon::start_data_table_row().'
               <td> '.&mt('Filename of bubblesheet data file:').' </td><td> '.$file_selector.' </td>
          '.&Apache::loncommon::end_data_table_row().'
          '.&Apache::loncommon::start_data_table_row().'
               <td> '.&mt('Format of bubblesheet data file:').' </td><td> '.$format_selector.' </td>
          '.&Apache::loncommon::end_data_table_row().'
          '.&Apache::loncommon::start_data_table_row().'
               <td> '.&mt('Saved CODEs to validate against:').' </td><td> '.$CODE_selector.' </td>
          '.&Apache::loncommon::end_data_table_row().'
          '.&Apache::loncommon::start_data_table_row().'
               <td> '.&mt('Each CODE is only to be used once:').'</td><td> '.$CODE_unique.' </td>
          '.&Apache::loncommon::end_data_table_row().'
          '.&Apache::loncommon::start_data_table_row().'
       <td> '.&mt('Options:').' </td>
               <td>
          <label><input type="checkbox" name="scantron_options_redo" value="redo_skipped"/> '.&mt('Do only previously skipped records').'</label> <br />
                  <label><input type="checkbox" name="scantron_options_ignore" value="ignore_corrections"/> '.&mt('Remove all existing corrections').'</label> <br />
                  <label><input type="checkbox" name="scantron_options_hidden" value="ignore_hidden"/> '.&mt('Skip hidden resources when grading').'</label>
       </td>
          '.&Apache::loncommon::end_data_table_row().'
          '.&Apache::loncommon::start_data_table_row().'
               <td colspan="2">
                 <input type="submit" value="'.&mt('Grading: Validate Bubblesheet Records').'" />
               </td>
          '.&Apache::loncommon::end_data_table_row().'
       '.&Apache::loncommon::end_data_table().'
       </form>
   ';
      
       $r->print($result);
   
       # Chunk of the form that prompts to view a scoring office file,
       # corrected file, skipped records in a file.
   
       $r->print('
      <br />
      <form action="/adm/grades" name="scantron_download">
        '.$default_form_data.'
        <input type="hidden" name="command" value="scantron_download" />
        '.&Apache::loncommon::start_data_table('LC_scantron_action').'
          '.&Apache::loncommon::start_data_table_header_row().'
                 <th>
                   &nbsp;'.&mt('Download a scoring office file').'
                 </th>
          '.&Apache::loncommon::end_data_table_header_row().'
          '.&Apache::loncommon::start_data_table_row().'
                 <td> '.&mt('Filename of scoring office file: [_1]',$file_selector).' 
                   <br />
                   <input type="submit" value="'.&mt('Download: Show List of Associated Files').'" />
          '.&Apache::loncommon::end_data_table_row().'
        '.&Apache::loncommon::end_data_table().'
      </form>
      <br />
   ');
   
       &Apache::lonpickcode::code_list($r,2);
   
       $r->print('<br /><form method="post" name="checkscantron" action="">'.
                $default_form_data."\n".
                &Apache::loncommon::start_data_table('LC_scantron_action')."\n".
                &Apache::loncommon::start_data_table_header_row()."\n".
                '<th colspan="2">
                 &nbsp;'.&mt('Review bubblesheet data and submissions for a previously graded folder/sequence')."\n".
                '</th>'."\n".
                 &Apache::loncommon::end_data_table_header_row()."\n".
                 &Apache::loncommon::start_data_table_row()."\n".
                 '<td> '.&mt('Graded folder/sequence:').' </td>'."\n".
                 '<td> '.$sequence_selector.' </td>'.
                 &Apache::loncommon::end_data_table_row()."\n".
                 &Apache::loncommon::start_data_table_row()."\n".
                 '<td> '.&mt('Filename of scoring office file:').' </td>'."\n".
                 '<td> '.$file_selector.' </td>'."\n".
                 &Apache::loncommon::end_data_table_row()."\n".
                 &Apache::loncommon::start_data_table_row()."\n".
                 '<td> '.&mt('Format of data file:').' </td>'."\n".
                 '<td> '.$format_selector.' </td>'."\n".
                 &Apache::loncommon::end_data_table_row()."\n".
                 &Apache::loncommon::start_data_table_row()."\n".
                 '<td> '.&mt('Options').' </td>'."\n".
                 '<td> <label><input type="checkbox" name="scantron_options_hidden" value="ignore_hidden"/> '.&mt('Skip hidden resources').'</label></td>'.
                 &Apache::loncommon::end_data_table_row()."\n".
                 &Apache::loncommon::start_data_table_row()."\n".
                 '<td colspan="2">'."\n".
                 '<input type="hidden" name="command" value="checksubmissions" />'."\n".
                 '<input type="submit" value="'.&mt('Review Bubblesheet Data and Submission Records').'" />'."\n".
                 '</td>'."\n".
                 &Apache::loncommon::end_data_table_row()."\n".
                 &Apache::loncommon::end_data_table()."\n".
                 '</form><br />');
       return;
   }
   
   =pod 
   
   =item username_to_idmap
   
       creates a hash keyed by student/employee ID with values of the corresponding
       student username:domain. If a single ID occurs for more than one student,
       the status of the student is checked, and if Active, the value in the hash
       will be set to the Active student.
   
     Arguments:
   
       $classlist - reference to the class list hash. This is a hash
                    keyed by student name:domain  whose elements are references
                    to arrays containing various chunks of information
                    about the student. (See loncoursedata for more info).
   
     Returns
       %idmap - the constructed hash
   
   =cut
   
   sub username_to_idmap {
       my ($classlist)= @_;
       my %idmap;
       foreach my $student (keys(%$classlist)) {
           my $id = $classlist->{$student}->[&Apache::loncoursedata::CL_ID];
           unless ($id eq '') {
               if (!exists($idmap{$id})) {
                   $idmap{$id} = $student;
               } else {
                   my $status = $classlist->{$student}->[&Apache::loncoursedata::CL_STATUS];
                   if ($status eq 'Active') {
                       $idmap{$id} = $student;
                   }
               }
           }
       }
       return %idmap;
   }
   
   =pod
   
   =item scantron_fixup_scanline
   
      Process a requested correction to a scanline.
   
     Arguments:
       $scantron_config   - hash from &Apache::lonnet::get_scantron_config()
       $scan_data         - hash of correction information 
                             (see &scantron_getfile())
       $line              - existing scanline
       $whichline         - line number of the passed in scanline
       $field             - type of change to process 
                            (either 
                             'ID'     -> correct the student/employee ID
                             'CODE'   -> correct the CODE
                             'answer' -> fixup the submitted answers)
       
      $args               - hash of additional info,
                             - 'ID' 
                                  'newid' -> studentID to use in replacement
                                             of existing one
                             - 'CODE' 
                                  'CODE_ignore_dup' - set to true if duplicates
                                                      should be ignored.
                          'CODE' - is new code or 'use_unfound'
                                           if the existing unfound code should
                                           be used as is
                             - 'answer'
                                  'response' - new answer or 'none' if blank
                                  'question' - the bubble line to change
                                  'questionnum' - the question identifier,
                                                  may include subquestion. 
   
     Returns:
       $line - the modified scanline
   
     Side effects: 
       $scan_data - may be updated
   
   =cut
   
   
   sub scantron_fixup_scanline {
       my ($scantron_config,$scan_data,$line,$whichline,$field,$args)=@_;
       if ($field eq 'ID') {
    if (length($args->{'newid'}) > $$scantron_config{'IDlength'}) {
       return ($line,1,'New value too large');
    }
    if (length($args->{'newid'}) < $$scantron_config{'IDlength'}) {
       $args->{'newid'}=sprintf('%-'.$$scantron_config{'IDlength'}.'s',
        $args->{'newid'});
    }
    substr($line,$$scantron_config{'IDstart'}-1,
          $$scantron_config{'IDlength'})=$args->{'newid'};
    if ($args->{'newid'}=~/^\s*$/) {
       &scan_data($scan_data,"$whichline.user",
          $args->{'username'}.':'.$args->{'domain'});
    }
       } elsif ($field eq 'CODE') {
    if ($args->{'CODE_ignore_dup'}) {
       &scan_data($scan_data,"$whichline.CODE_ignore_dup",'1');
    }
    &scan_data($scan_data,"$whichline.useCODE",'1');
    if ($args->{'CODE'} ne 'use_unfound') {
       if (length($args->{'CODE'}) > $$scantron_config{'CODElength'}) {
    return ($line,1,'New CODE value too large');
       }
       if (length($args->{'CODE'}) < $$scantron_config{'CODElength'}) {
    $args->{'CODE'}=sprintf('%-'.$$scantron_config{'CODElength'}.'s',$args->{'CODE'});
       }
       substr($line,$$scantron_config{'CODEstart'}-1,
      $$scantron_config{'CODElength'})=$args->{'CODE'};
    }
       } elsif ($field eq 'answer') {
    my $length=$scantron_config->{'Qlength'};
    my $off=$scantron_config->{'Qoff'};
    my $on=$scantron_config->{'Qon'};
    my $answer=${off}x$length;
    if ($args->{'response'} eq 'none') {
       &scan_data($scan_data,
          "$whichline.no_bubble.".$args->{'questionnum'},'1');
    } else {
       if ($on eq 'letter') {
    my @alphabet=('A'..'Z');
    $answer=$alphabet[$args->{'response'}];
       } elsif ($on eq 'number') {
    $answer=$args->{'response'}+1;
    if ($answer == 10) { $answer = '0'; }
       } else {
    substr($answer,$args->{'response'},1)=$on;
       }
       &scan_data($scan_data,
          "$whichline.no_bubble.".$args->{'questionnum'},undef,'1');
    }
    my $where=$length*($args->{'question'}-1)+$scantron_config->{'Qstart'};
    substr($line,$where-1,$length)=$answer;
       }
       return $line;
   }
   
   =pod
   
   =item scan_data
   
       Edit or look up  an item in the scan_data hash.
   
     Arguments:
       $scan_data  - The hash (see scantron_getfile)
       $key        - shorthand of the key to edit (actual key is
                     scantronfilename_key).
       $data        - New value of the hash entry.
       $delete      - If true, the entry is removed from the hash.
   
     Returns:
       The new value of the hash table field (undefined if deleted).
   
   =cut
   
   
   sub scan_data {
       my ($scan_data,$key,$value,$delete)=@_;
       my $filename=$env{'form.scantron_selectfile'};
       if (defined($value)) {
    $scan_data->{$filename.'_'.$key} = $value;
       }
       if ($delete) { delete($scan_data->{$filename.'_'.$key}); }
       return $scan_data->{$filename.'_'.$key};
   }
   
   # ----- These first few routines are general use routines.----
   
   # Return the number of occurences of a pattern in a string.
   
   sub occurence_count {
       my ($string, $pattern) = @_;
   
       my @matches = ($string =~ /$pattern/g);
   
       return scalar(@matches);
   }
   
   
   # Take a string known to have digits and convert all the
   # digits into letters in the range J,A..I.
   
   sub digits_to_letters {
       my ($input) = @_;
   
       my @alphabet = ('J', 'A'..'I');
   
       my @input    = split(//, $input);
       my $output ='';
       for (my $i = 0; $i < scalar(@input); $i++) {
    if ($input[$i] =~ /\d/) {
       $output .= $alphabet[$input[$i]];
    } else {
       $output .= $input[$i];
    }
       }
       return $output;
   }
   
   =pod 
   
   =item scantron_parse_scanline
   
     Decodes a scanline from the selected bubblesheet file
   
    Arguments:
       line             - The text of the bubblesheet file line to process
       whichline        - Line number
       scantron_config  - Hash describing the format of the bubblesheet lines.
       scan_data        - Hash of extra information about the scanline
                          (see scantron_getfile for more information)
       just_header      - True if should not process question answers but only
                          the stuff to the left of the answers.
       randomorder      - True if randomorder in use
       randompick       - True if randompick in use
       sequence         - Exam folder URL
       master_seq       - Ref to array containing symbs in exam folder
       symb_to_resource - Ref to hash of symbs for resources in exam folder
                          (corresponding values are resource objects)
       partids_by_symb  - Ref to hash of symb -> array ref of partIDs
       orderedforcode   - Ref to hash of arrays. keys are CODEs and values
                          are refs to an array of resource objects, ordered
                          according to order used for CODE, when randomorder
                          and or randompick are in use.
       respnumlookup    - Ref to hash mapping question numbers in bubble lines
                          for current line to question number used for same question
                           in "Master Sequence" (as seen by Course Coordinator).
       startline        - Ref to hash where key is question number (0 is first)
                          and value is number of first bubble line for current 
                          student or code-based randompick and/or randomorder.
       totalref         - Ref of scalar used to score total number of bubble
                          lines needed for responses in a scan line (used when
                          randompick in use. 
       
    Returns:
      Hash containing the result of parsing the scanline
   
      Keys are all proceeded by the string 'scantron.'
   
          CODE    - the CODE in use for this scanline
          useCODE - 1 if the CODE is invalid but it usage has been forced
                    by the operator
          CODE_ignore_dup - 1 if the CODE is a duplicated use when unique
                               CODEs were selected, but the usage has been
                               forced by the operator
          ID  - student/employee ID
          PaperID - if used, the ID number printed on the sheet when the 
                    paper was scanned
          FirstName - first name from the sheet
          LastName  - last name from the sheet
   
        if just_header was not true these key may also exist
   
          missingerror - a list of bubble ranges that are considered to be answers
                         to a single question that don't have any bubbles filled in.
                         Of the form questionnumber:firstbubblenumber:count.
          doubleerror  - a list of bubble ranges that are considered to be answers
                         to a single question that have more than one bubble filled in.
                         Of the form questionnumber::firstbubblenumber:count
      
                   In the above, count is the number of bubble responses in the
                   input line needed to represent the possible answers to the question.
                   e.g. a radioresponse with 15 choices in an answer sheet with 10 choices
                   per line would have count = 2.
   
          maxquest     - the number of the last bubble line that was parsed
   
          (<number> starts at 1)
          <number>.answer - zero or more letters representing the selected
                            letters from the scanline for the bubble line 
                            <number>.
                            if blank there was either no bubble or there where
                            multiple bubbles, (consult the keys missingerror and
                            doubleerror if this is an error condition)
   
   =cut
   
   sub scantron_parse_scanline {
       my ($line,$whichline,$scantron_config,$scan_data,$just_header,$idmap,
           $randomorder,$randompick,$sequence,$master_seq,$symb_to_resource,
           $partids_by_symb,$orderedforcode,$respnumlookup,$startline,$totalref)=@_;
   
       my %record;
       my $data=substr($line,0,$$scantron_config{'Qstart'}-1); # stuff before answers
       if (!($$scantron_config{'CODElocation'} eq 0 ||
     $$scantron_config{'CODElocation'} eq 'none')) {
    if ($$scantron_config{'CODElocation'} < 0 ||
       $$scantron_config{'CODElocation'} eq 'letter' ||
       $$scantron_config{'CODElocation'} eq 'number') {
       $record{'scantron.CODE'}=substr($data,
       $$scantron_config{'CODEstart'}-1,
       $$scantron_config{'CODElength'});
       if (&scan_data($scan_data,"$whichline.useCODE")) {
    $record{'scantron.useCODE'}=1;
       }
       if (&scan_data($scan_data,"$whichline.CODE_ignore_dup")) {
    $record{'scantron.CODE_ignore_dup'}=1;
       }
    } else {
       #FIXME interpret first N questions
    }
       }
       $record{'scantron.ID'}=substr($data,$$scantron_config{'IDstart'}-1,
     $$scantron_config{'IDlength'});
       $record{'scantron.PaperID'}=
    substr($data,$$scantron_config{'PaperID'}-1,
          $$scantron_config{'PaperIDlength'});
       $record{'scantron.FirstName'}=
    substr($data,$$scantron_config{'FirstName'}-1,
          $$scantron_config{'FirstNamelength'});
       $record{'scantron.LastName'}=
    substr($data,$$scantron_config{'LastName'}-1,
          $$scantron_config{'LastNamelength'});
       if ($just_header) { return \%record; }
   
       my @alphabet=('A'..'Z');
       my $questnum=0;
       my $ansnum  =1; # Multiple 'answer lines'/question.
   
       my $lastpos = $env{'form.scantron_maxbubble'}*$$scantron_config{'Qlength'};
       if ($randompick || $randomorder) {
           my $total = &get_respnum_lookups($sequence,$scan_data,$idmap,$line,\%record,
                                            $master_seq,$symb_to_resource,
                                            $partids_by_symb,$orderedforcode,
                                            $respnumlookup,$startline);
           if ($total) {
               $lastpos = $total*$$scantron_config{'Qlength'}; 
           }
           if (ref($totalref)) {
               $$totalref = $total;
           }
       }
       my $questions=substr($line,$$scantron_config{'Qstart'}-1,$lastpos);  # Answers
       chomp($questions); # Get rid of any trailing \n.
       $questions =~ s/\r$//;      # Get rid of trailing \r too (MAC or Win uploads).
       while (length($questions)) {
           my $answers_needed;
           if (($randompick || $randomorder) && (ref($respnumlookup) eq 'HASH')) {
               $answers_needed = $bubble_lines_per_response{$respnumlookup->{$questnum}};
           } else {
       $answers_needed = $bubble_lines_per_response{$questnum};
           }
           my $answer_length  = ($$scantron_config{'Qlength'} * $answers_needed)
                                || 1;
           $questnum++;
           my $quest_id = $questnum;
           my $currentquest = substr($questions,0,$answer_length);
           $questions       = substr($questions,$answer_length);
           if (length($currentquest) < $answer_length) { next; }
   
           my $subdivided;
           if (($randompick || $randomorder) && (ref($respnumlookup) eq 'HASH')) {
               $subdivided = $subdivided_bubble_lines{$respnumlookup->{$questnum-1}};
           } else {
               $subdivided = $subdivided_bubble_lines{$questnum-1};
           }
           if ($subdivided =~ /,/) {
               my $subquestnum = 1;
               my $subquestions = $currentquest;
               my @subanswers_needed = split(/,/,$subdivided);
               foreach my $subans (@subanswers_needed) {
                   my $subans_length =
                       ($$scantron_config{'Qlength'} * $subans)  || 1;
                   my $currsubquest = substr($subquestions,0,$subans_length);
                   $subquestions   = substr($subquestions,$subans_length);
                   $quest_id = "$questnum.$subquestnum";
                   if (($$scantron_config{'Qon'} eq 'letter') ||
                       ($$scantron_config{'Qon'} eq 'number')) {
                       $ansnum = &scantron_validator_lettnum($ansnum, 
                           $questnum,$quest_id,$subans,$currsubquest,$whichline,
                           \@alphabet,\%record,$scantron_config,$scan_data,
                           $randomorder,$randompick,$respnumlookup);
                   } else {
                       $ansnum = &scantron_validator_positional($ansnum,
                           $questnum,$quest_id,$subans,$currsubquest,$whichline,
                           \@alphabet,\%record,$scantron_config,$scan_data,
                           $randomorder,$randompick,$respnumlookup);
                   }
                   $subquestnum ++;
               }
           } else {
               if (($$scantron_config{'Qon'} eq 'letter') ||
                   ($$scantron_config{'Qon'} eq 'number')) {
                   $ansnum = &scantron_validator_lettnum($ansnum,$questnum,
                       $quest_id,$answers_needed,$currentquest,$whichline,
                       \@alphabet,\%record,$scantron_config,$scan_data,
                       $randomorder,$randompick,$respnumlookup);
               } else {
                   $ansnum = &scantron_validator_positional($ansnum,$questnum,
                       $quest_id,$answers_needed,$currentquest,$whichline,
                       \@alphabet,\%record,$scantron_config,$scan_data,
                       $randomorder,$randompick,$respnumlookup);
               }
           }
       }
       $record{'scantron.maxquest'}=$questnum;
       return \%record;
   }
   
   sub get_master_seq {
       my ($resources,$master_seq,$symb_to_resource) = @_;
       return unless ((ref($resources) eq 'ARRAY') && (ref($master_seq) eq 'ARRAY') && 
                      (ref($symb_to_resource) eq 'HASH'));
       my $resource_error;
       foreach my $resource (@{$resources}) {
           my $ressymb;
           if (ref($resource)) {
               $ressymb = $resource->symb();
               push(@{$master_seq},$ressymb);
               $symb_to_resource->{$ressymb} = $resource;
           } else {
               $resource_error = 1;
               last;
           }
       }
       return $resource_error;
   }
   
   sub get_respnum_lookups {
       my ($sequence,$scan_data,$idmap,$line,$record,$master_seq,$symb_to_resource,
           $partids_by_symb,$orderedforcode,$respnumlookup,$startline) = @_;
       return unless ((ref($record) eq 'HASH') && (ref($master_seq) eq 'ARRAY') &&
                      (ref($symb_to_resource) eq 'HASH') && (ref($partids_by_symb) eq 'HASH') &&
                      (ref($orderedforcode) eq 'HASH') && (ref($respnumlookup) eq 'HASH') &&
                      (ref($startline) eq 'HASH'));
       my ($user,$scancode);
       if ((exists($record->{'scantron.CODE'})) &&
           (&Apache::lonnet::validCODE($record->{'scantron.CODE'}))) {
           $scancode = $record->{'scantron.CODE'};
       } else {
           $user = &scantron_find_student($record,$scan_data,$idmap,$line);
       }
       my @mapresources =
           &users_order($user,$scancode,$sequence,$master_seq,$symb_to_resource,
                        $orderedforcode);
       my $total = 0;
       my $count = 0;
       foreach my $resource (@mapresources) {
           my $id = $resource->id();
           my $symb = $resource->symb();
           if (ref($partids_by_symb->{$symb}) eq 'ARRAY') {
               foreach my $partid (@{$partids_by_symb->{$symb}}) {
                   my $respnum = $masterseq_id_responsenum{$id.'_'.$partid};
                   if ($respnum ne '') {
                       $respnumlookup->{$count} = $respnum;
                       $startline->{$count} = $total;
                       $total += $bubble_lines_per_response{$respnum};
                       $count ++;
                   }
               }
           }
       }
       return $total;
   }
   
   sub scantron_validator_lettnum {
       my ($ansnum,$questnum,$quest_id,$answers_needed,$currquest,$whichline,
           $alphabet,$record,$scantron_config,$scan_data,$randomorder,
           $randompick,$respnumlookup) = @_;
   
       # Qon 'letter' implies for each slot in currquest we have:
       #    ? or * for doubles, a letter in A-Z for a bubble, and
       #    about anything else (esp. a value of Qoff) for missing
       #    bubbles.
       #
       # Qon 'number' implies each slot gives a digit that indexes the
       #    bubbles filled, or Qoff, or a non-number for unbubbled lines,
       #    and * or ? for double bubbles on a single line.
       #
   
       my $matchon;
       if ($$scantron_config{'Qon'} eq 'letter') {
           $matchon = '[A-Z]';
       } elsif ($$scantron_config{'Qon'} eq 'number') {
           $matchon = '\d';
       }
       my $occurrences = 0;
       my $responsenum = $questnum-1;
       if (($randompick || $randomorder) && (ref($respnumlookup) eq 'HASH')) {
          $responsenum = $respnumlookup->{$questnum-1} 
       }
       if (($responsetype_per_response{$responsenum} eq 'essayresponse') ||
           ($responsetype_per_response{$responsenum} eq 'formularesponse') ||
           ($responsetype_per_response{$responsenum} eq 'stringresponse') ||
           ($responsetype_per_response{$responsenum} eq 'imageresponse') ||
           ($responsetype_per_response{$responsenum} eq 'reactionresponse') ||
           ($responsetype_per_response{$responsenum} eq 'organicresponse')) {
           my @singlelines = split('',$currquest);
           foreach my $entry (@singlelines) {
               $occurrences = &occurence_count($entry,$matchon);
               if ($occurrences > 1) {
                   last;
               }
           }
       } else {
           $occurrences = &occurence_count($currquest,$matchon); 
       }
       if (($currquest =~ /\?/ || $currquest =~ /\*/) || ($occurrences > 1)) {
           push(@{$record->{'scantron.doubleerror'}},$quest_id);
           for (my $ans=0; $ans<$answers_needed; $ans++) {
               my $bubble = substr($currquest,$ans,1);
               if ($bubble =~ /$matchon/ ) {
                   if ($$scantron_config{'Qon'} eq 'number') {
                       if ($bubble == 0) {
                           $bubble = 10; 
                       }
                       $record->{"scantron.$ansnum.answer"} = 
                           $alphabet->[$bubble-1];
                   } else {
                       $record->{"scantron.$ansnum.answer"} = $bubble;
                   }
               } else {
                   $record->{"scantron.$ansnum.answer"}='';
               }
               $ansnum++;
           }
       } elsif (!defined($currquest)
               || (&occurence_count($currquest, $$scantron_config{'Qoff'}) == length($currquest))
               || (&occurence_count($currquest,$matchon) == 0)) {
           for (my $ans=0; $ans<$answers_needed; $ans++ ) {
               $record->{"scantron.$ansnum.answer"}='';
               $ansnum++;
           }
           if (!&scan_data($scan_data,"$whichline.no_bubble.$quest_id")) {
               push(@{$record->{'scantron.missingerror'}},$quest_id);
           }
       } else {
           if ($$scantron_config{'Qon'} eq 'number') {
               $currquest = &digits_to_letters($currquest);            
           }
           for (my $ans=0; $ans<$answers_needed; $ans++) {
               my $bubble = substr($currquest,$ans,1);
               $record->{"scantron.$ansnum.answer"} = $bubble;
               $ansnum++;
           }
       }
       return $ansnum;
   }
   
   sub scantron_validator_positional {
       my ($ansnum,$questnum,$quest_id,$answers_needed,$currquest,
           $whichline,$alphabet,$record,$scantron_config,$scan_data,
           $randomorder,$randompick,$respnumlookup) = @_;
   
       # Otherwise there's a positional notation;
       # each bubble line requires Qlength items, and there are filled in
       # bubbles for each case where there 'Qon' characters.
       #
   
       my @array=split($$scantron_config{'Qon'},$currquest,-1);
   
       # If the split only gives us one element.. the full length of the
       # answer string, no bubbles are filled in:
   
       if ($answers_needed eq '') {
           return;
       }
   
       if (length($array[0]) eq $$scantron_config{'Qlength'}*$answers_needed) {
           for (my $ans=0; $ans<$answers_needed; $ans++ ) {
               $record->{"scantron.$ansnum.answer"}='';
               $ansnum++;
           }
           if (!&scan_data($scan_data,"$whichline.no_bubble.$quest_id")) {
               push(@{$record->{"scantron.missingerror"}},$quest_id);
           }
       } elsif (scalar(@array) == 2) {
           my $location = length($array[0]);
           my $line_num = int($location / $$scantron_config{'Qlength'});
           my $bubble   = $alphabet->[$location % $$scantron_config{'Qlength'}];
           for (my $ans=0; $ans<$answers_needed; $ans++) {
               if ($ans eq $line_num) {
                   $record->{"scantron.$ansnum.answer"} = $bubble;
               } else {
                   $record->{"scantron.$ansnum.answer"} = ' ';
               }
               $ansnum++;
            }
       } else {
           #  If there's more than one instance of a bubble character
           #  That's a double bubble; with positional notation we can
           #  record all the bubbles filled in as well as the
           #  fact this response consists of multiple bubbles.
           #
           my $responsenum = $questnum-1;
           if (($randompick || $randomorder) && (ref($respnumlookup) eq 'HASH')) {
               $responsenum = $respnumlookup->{$questnum-1}
           }
           if (($responsetype_per_response{$responsenum} eq 'essayresponse') ||
               ($responsetype_per_response{$responsenum} eq 'formularesponse') ||
               ($responsetype_per_response{$responsenum} eq 'stringresponse') ||
               ($responsetype_per_response{$responsenum} eq 'imageresponse') ||
               ($responsetype_per_response{$responsenum} eq 'reactionresponse') ||
               ($responsetype_per_response{$responsenum} eq 'organicresponse')) {
               my $doubleerror = 0;
               while (($currquest >= $$scantron_config{'Qlength'}) && 
                      (!$doubleerror)) {
                  my $currline = substr($currquest,0,$$scantron_config{'Qlength'});
                  $currquest = substr($currquest,$$scantron_config{'Qlength'});
                  my @currarray = split($$scantron_config{'Qon'},$currline,-1);
                  if (length(@currarray) > 2) {
                      $doubleerror = 1;
                  } 
               }
               if ($doubleerror) {
                   push(@{$record->{'scantron.doubleerror'}},$quest_id);
               }
           } else {
               push(@{$record->{'scantron.doubleerror'}},$quest_id);
           }
           my $item = $ansnum;
           for (my $ans=0; $ans<$answers_needed; $ans++) {
               $record->{"scantron.$item.answer"} = '';
               $item ++;
           }
   
           my @ans=@array;
           my $i=0;
           my $increment = 0;
           while ($#ans) {
               $i+=length($ans[0]) + $increment;
               my $line   = int($i/$$scantron_config{'Qlength'} + $ansnum);
               my $bubble = $i%$$scantron_config{'Qlength'};
               $record->{"scantron.$line.answer"}.=$alphabet->[$bubble];
               shift(@ans);
               $increment = 1;
           }
           $ansnum += $answers_needed;
       }
       return $ansnum;
   }
   
   =pod
   
   =item scantron_add_delay
   
      Adds an error message that occurred during the grading phase to a
      queue of messages to be shown after grading pass is complete
   
    Arguments:
      $delayqueue  - arrary ref of hash ref of error messages
      $scanline    - the scanline that caused the error
      $errormesage - the error message
      $errorcode   - a numeric code for the error
   
    Side Effects:
      updates the $delayqueue to have a new hash ref of the error
   
   =cut
   
   sub scantron_add_delay {
       my ($delayqueue,$scanline,$errormessage,$errorcode)=@_;
       push(@$delayqueue,
    {'line' => $scanline, 'emsg' => $errormessage,
     'ecode' => $errorcode }
    );
   }
   
   =pod
   
   =item scantron_find_student
   
      Finds the username for the current scanline
   
     Arguments:
      $scantron_record - hash result from scantron_parse_scanline
      $scan_data       - hash of correction information 
                         (see &scantron_getfile() form more information)
      $idmap           - hash from &username_to_idmap()
      $line            - number of current scanline
    
     Returns:
      Either 'username:domain' or undef if unknown
   
   =cut
   
   sub scantron_find_student {
       my ($scantron_record,$scan_data,$idmap,$line)=@_;
       my $scanID=$$scantron_record{'scantron.ID'};
       if ($scanID =~ /^\s*$/) {
     return &scan_data($scan_data,"$line.user");
       }
       foreach my $id (keys(%$idmap)) {
     if (lc($id) eq lc($scanID)) {
        return $$idmap{$id};
     }
       }
       return undef;
   }
   
   =pod
   
   =item scantron_filter
   
      Filter sub for lonnavmaps, filters out hidden resources if ignore
      hidden resources was selected
   
   =cut
   
   sub scantron_filter {
       my ($curres)=@_;
   
       if (ref($curres) && $curres->is_problem()) {
    # if the user has asked to not have either hidden
    # or 'randomout' controlled resources to be graded
    # don't include them
    if ($env{'form.scantron_options_hidden'} eq 'ignore_hidden'
       && $curres->randomout) {
       return 0;
    }
    return 1;
       }
       return 0;
   }
   
   =pod
   
   =item scantron_process_corrections
   
      Gets correction information out of submitted form data and corrects
      the scanline
   
   =cut
   
   sub scantron_process_corrections {
       my ($r) = @_;
       my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
       my ($scanlines,$scan_data)=&scantron_getfile();
       my $classlist=&Apache::loncoursedata::get_classlist();
       my $which=$env{'form.scantron_line'};
       my $line=&scantron_get_line($scanlines,$scan_data,$which);
       my ($skip,$err,$errmsg);
       if ($env{'form.scantron_skip_record'}) {
    $skip=1;
       } elsif ($env{'form.scantron_corrections'} =~ /^(duplicate|incorrect)ID$/) {
    my $newstudent=$env{'form.scantron_username'}.':'.
       $env{'form.scantron_domain'};
    my $newid=$classlist->{$newstudent}->[&Apache::loncoursedata::CL_ID];
    ($line,$err,$errmsg)=
       &scantron_fixup_scanline(\%scantron_config,$scan_data,$line,$which,
        'ID',{'newid'=>$newid,
       'username'=>$env{'form.scantron_username'},
       'domain'=>$env{'form.scantron_domain'}});
       } elsif ($env{'form.scantron_corrections'} =~ /^(duplicate|incorrect)CODE$/) {
    my $resolution=$env{'form.scantron_CODE_resolution'};
    my $newCODE;
    my %args;
    if      ($resolution eq 'use_unfound') {
       $newCODE='use_unfound';
    } elsif ($resolution eq 'use_found') {
       $newCODE=$env{'form.scantron_CODE_selectedvalue'};
    } elsif ($resolution eq 'use_typed') {
       $newCODE=$env{'form.scantron_CODE_newvalue'};
    } elsif ($resolution =~ /^use_closest_(\d+)/) {
       $newCODE=$env{"form.scantron_CODE_closest_$1"};
    }
    if ($env{'form.scantron_corrections'} eq 'duplicateCODE') {
       $args{'CODE_ignore_dup'}=1;
    }
    $args{'CODE'}=$newCODE;
    ($line,$err,$errmsg)=
       &scantron_fixup_scanline(\%scantron_config,$scan_data,$line,$which,
        'CODE',\%args);
       } elsif ($env{'form.scantron_corrections'} =~ /^(missing|double)bubble$/) {
    foreach my $question (split(',',$env{'form.scantron_questions'})) {
       ($line,$err,$errmsg)=
    &scantron_fixup_scanline(\%scantron_config,$scan_data,$line,
    $which,'answer',
    { 'question'=>$question,
            'response'=>$env{"form.scantron_correct_Q_$question"},
                                      'questionnum'=>$env{"form.scantron_questionnum_Q_$question"}});
       if ($err) { last; }
    }
       }
       if ($err) {
           $r->print(
               '<p class="LC_error">'
              .&mt('Unable to accept last correction, an error occurred: [_1]',
                   $errmsg)
              .'</p>');
       } else {
    &scantron_put_line($scanlines,$scan_data,$which,$line,$skip);
    &scantron_putfile($scanlines,$scan_data);
       }
   }
   
   =pod
   
   =item reset_skipping_status
   
      Forgets the current set of remember skipped scanlines (and thus
      reverts back to considering all lines in the
      scantron_skipped_<filename> file)
   
   =cut
   
   sub reset_skipping_status {
       my ($scanlines,$scan_data)=&scantron_getfile();
       &scan_data($scan_data,'remember_skipping',undef,1);
       &scantron_putfile(undef,$scan_data);
   }
   
   =pod
   
   =item start_skipping
   
      Marks a scanline to be skipped. 
   
   =cut
   
   sub start_skipping {
       my ($scan_data,$i)=@_;
       my %remembered=split(':',&scan_data($scan_data,'remember_skipping'));
       if ($env{'form.scantron_options_redo'} =~ /^redo_/) {
    $remembered{$i}=2;
       } else {
    $remembered{$i}=1;
       }
       &scan_data($scan_data,'remember_skipping',join(':',%remembered));
   }
   
   =pod
   
   =item should_be_skipped
   
      Checks whether a scanline should be skipped.
   
   =cut
   
   sub should_be_skipped {
       my ($scanlines,$scan_data,$i)=@_;
       if ($env{'form.scantron_options_redo'} !~ /^redo_/) {
    # not redoing old skips
    if ($scanlines->{'skipped'}[$i]) { return 1; }
    return 0;
       }
       my %remembered=split(':',&scan_data($scan_data,'remember_skipping'));
   
       if (exists($remembered{$i}) && $remembered{$i} != 2 ) {
    return 0;
       }
       return 1;
   }
   
   =pod
   
   =item remember_current_skipped
   
      Discovers what scanlines are in the scantron_skipped_<filename>
      file and remembers them into scan_data for later use.
   
   =cut
   
   sub remember_current_skipped {
       my ($scanlines,$scan_data)=&scantron_getfile();
       my %to_remember;
       for (my $i=0;$i<=$scanlines->{'count'};$i++) {
    if ($scanlines->{'skipped'}[$i]) {
       $to_remember{$i}=1;
    }
       }
   
       &scan_data($scan_data,'remember_skipping',join(':',%to_remember));
       &scantron_putfile(undef,$scan_data);
   }
   
   =pod
   
   =item check_for_error
   
       Checks if there was an error when attempting to remove a specific
       scantron_.. bubblesheet data file. Prints out an error if
       something went wrong.
   
   =cut
   
   sub check_for_error {
       my ($r,$result)=@_;
       if ($result ne 'ok' && $result ne 'not_found' ) {
    $r->print(&mt("An error occurred ([_1]) when trying to remove the existing corrections.",$result));
       }
   }
   
   =pod
   
   =item scantron_warning_screen
   
      Interstitial screen to make sure the operator has selected the
      correct options before we start the validation phase.
   
   =cut
   
   sub scantron_warning_screen {
       my ($button_text,$symb)=@_;
       my $title=&Apache::lonnet::gettitle($env{'form.selectpage'});
       my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
       my $CODElist;
       if ($scantron_config{'CODElocation'} &&
    $scantron_config{'CODEstart'} &&
    $scantron_config{'CODElength'}) {
    $CODElist=$env{'form.scantron_CODElist'};
    if ($env{'form.scantron_CODElist'} eq '') { $CODElist='<span class="LC_warning">'.&mt('None').'</span>'; }
    $CODElist=
       '<tr><td><b>'.&mt('List of CODES to validate against:').'</b></td><td><tt>'.
       $env{'form.scantron_CODElist'}.'</tt></td></tr>';
       }
       my $lastbubblepoints;
       if ($env{'form.scantron_lastbubblepoints'} ne '') {
           $lastbubblepoints =
               '<tr><td><b>'.&mt('Hand-graded items: points from last bubble in row').'</b></td><td><tt>'.
               $env{'form.scantron_lastbubblepoints'}.'</tt></td></tr>';
       }
       return '
   <p>
   <span class="LC_warning">
   '.&mt("Please double check the information below before clicking on '[_1]'",&mt($button_text)).'</span>
   </p>
   <table>
   <tr><td><b>'.&mt('Sequence to be Graded:').'</b></td><td>'.$title.'</td></tr>
   <tr><td><b>'.&mt('Data File that will be used:').'</b></td><td><tt>'.$env{'form.scantron_selectfile'}.'</tt></td></tr>
   '.$CODElist.$lastbubblepoints.'
   </table>
   <p> '.&mt("If this information is correct, please click on '[_1]'.",&mt($button_text)).'<br />
   '.&mt('If something is incorrect, please return to [_1]Grade/Manage/Review Bubblesheets[_2] to start over.','<a href="/adm/grades?symb='.$symb.'&command=scantron_selectphase" class="LC_info">','</a>').'</p>
   ';
   }
   
   =pod
   
   =item scantron_do_warning
   
      Check if the operator has picked something for all required
      fields. Error out if something is missing.
   
   =cut
   
   sub scantron_do_warning {
       my ($r,$symb)=@_;
       if (!$symb) {return '';}
       my $default_form_data=&defaultFormData($symb);
       $r->print(&scantron_form_start().$default_form_data);
       if ( $env{'form.selectpage'} eq '' ||
    $env{'form.scantron_selectfile'} eq '' ||
    $env{'form.scantron_format'} eq '' ) {
    $r->print("<p>".&mt('You have forgotten to specify some information. Please go Back and try again.')."</p>");
    if ( $env{'form.selectpage'} eq '') {
       $r->print('<p><span class="LC_error">'.&mt('You have not selected a Sequence to grade').'</span></p>');
    } 
    if ( $env{'form.scantron_selectfile'} eq '') {
       $r->print('<p><span class="LC_error">'.&mt("You have not selected a file that contains the student's response data.").'</span></p>');
    }
    if ( $env{'form.scantron_format'} eq '') {
       $r->print('<p><span class="LC_error">'.&mt("You have not selected the format of the student's response data.").'</span></p>');
    }
       } else {
    my $warning=&scantron_warning_screen('Grading: Validate Records',$symb);
           my ($checksec,@possibles) = &gradable_sections();
           my $gradesections;
           if ($checksec) {
               my $file=$env{'form.scantron_selectfile'};
               if (&valid_file($file)) {
                   my %bysec = &scantron_get_sections();
                   my $table;
                   if ((keys(%bysec) > 1) || ((keys(%bysec) == 1) && ((keys(%bysec))[0] ne $checksec))) {
                       $gradesections = &mt('Your current role is for section [_1].','<i>'.$checksec.'</i>').'<br />';
                       $table = &Apache::loncommon::start_data_table()."\n".
                                &Apache::loncommon::start_data_table_header_row().
                                '<th>'.&mt('Section').'</th><th>'.&mt('Number of records').'</th>'.
                                 &Apache::loncommon::end_data_table_header_row()."\n";
                       if ($bysec{'none'}) {
                           $table .= &Apache::loncommon::start_data_table_row().
                                     '<td>'.&mt('None').'</td><td>'.$bysec{'none'}.'</td>'.
                                     &Apache::loncommon::end_data_table_row()."\n";
                       }
                       foreach my $sec (sort { $a <=> $b } keys(%bysec)) {
                           next if ($sec eq 'none');
                           $table .= &Apache::loncommon::start_data_table_row().
                                     '<td>'.$sec.'</td><td>'.$bysec{$sec}.'</td>'.
                                     &Apache::loncommon::end_data_table_row()."\n";
                       }
                       $table .= &Apache::loncommon::end_data_table()."\n";
                       $gradesections .= &mt('Sections represented in the bubblesheet data file (based on bubbled student IDs) are as follows:').
                                         '<p>'.$table.'</p>';
                       if (@possibles) {
                           $gradesections .= '<p>'.
                                             &mt('You have role(s) in [quant,_1,other section,other sections] with privileges to manage grades.',
                                                 scalar(@possibles)).'<br />'.
                                             &mt('Check which of those section(s), in addition to section [_1], you wish to grade using this bubblesheet file:',
                                                 '<i>'.$checksec.'</i>').' ';
                           foreach my $sec (sort {$a <=> $b } @possibles) {
                               $gradesections .= '<label><input type="checkbox" name="scantron_othersections" value="'.$sec.'" />'.$sec.'</label>'.('&nbsp;'x2);
                           }
                           $gradesections .= '</p>';
                       }
                   }
               } else {
                   $gradesections = '<p class="LC_error">'.&mt('The selected file is unavailable').'</p>';
               }
           }
           my $bubbledbyhand=&hand_bubble_option();
    $r->print('
   '.$warning.$gradesections.$bubbledbyhand.'
   <input type="submit" name="submit" value="'.&mt('Grading: Validate Records').'" />
   <input type="hidden" name="command" value="scantron_validate" />
   ');
       }
       $r->print("</form><br />");
       return '';
   }
   
   =pod
   
   =item scantron_form_start
   
       html hidden input for remembering all selected grading options
   
   =cut
   
   sub scantron_form_start {
       my ($max_bubble)=@_;
       my $result= <<SCANTRONFORM;
   <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
     <input type="hidden" name="selectpage" value="$env{'form.selectpage'}" />
     <input type="hidden" name="scantron_format" value="$env{'form.scantron_format'}" />
     <input type="hidden" name="scantron_selectfile" value="$env{'form.scantron_selectfile'}" />
     <input type="hidden" name="scantron_maxbubble" value="$max_bubble" />
     <input type="hidden" name="scantron_CODElist" value="$env{'form.scantron_CODElist'}" />
     <input type="hidden" name="scantron_CODEunique" value="$env{'form.scantron_CODEunique'}" />
     <input type="hidden" name="scantron_options_redo" value="$env{'form.scantron_options_redo'}" />
     <input type="hidden" name="scantron_options_ignore" value="$env{'form.scantron_options_ignore'}" />
     <input type="hidden" name="scantron_options_hidden" value="$env{'form.scantron_options_hidden'}" />
   SCANTRONFORM
   
     my $line = 0;
       while (defined($env{"form.scantron.bubblelines.$line"})) {
          my $chunk =
      '<input type="hidden" name="scantron.bubblelines.'.$line.'" value="'.$env{"form.scantron.bubblelines.$line"}.'" />'."\n";
          $chunk .=
      '<input type="hidden" name="scantron.first_bubble_line.'.$line.'" value="'.$env{"form.scantron.first_bubble_line.$line"}.'" />'."\n";
          $chunk .= 
              '<input type="hidden" name="scantron.sub_bubblelines.'.$line.'" value="'.$env{"form.scantron.sub_bubblelines.$line"}.'" />'."\n";
          $chunk .=
              '<input type="hidden" name="scantron.responsetype.'.$line.'" value="'.$env{"form.scantron.responsetype.$line"}.'" />'."\n";
          $chunk .=
              '<input type="hidden" name="scantron.residpart.'.$line.'" value="'.$env{"form.scantron.residpart.$line"}.'" />'."\n";
          $result .= $chunk;
          $line++;
       }
     return $result;      return $result;
 }  }
   
 sub handler {  =pod
     my $request=$_[0];  
   =item scantron_validate_file
   
       Dispatch routine for doing validation of a bubblesheet data file.
   
       Also processes any necessary information resets that need to
       occur before validation begins (ignore previous corrections,
       restarting the skipped records processing)
   
   =cut
   
   sub scantron_validate_file {
       my ($r,$symb) = @_;
       if (!$symb) {return '';}
       my $default_form_data=&defaultFormData($symb);
       
       # do the detection of only doing skipped records first before we delete
       # them when doing the corrections reset
       if ($env{'form.scantron_options_redo'} ne 'redo_skipped_ready') {
    &reset_skipping_status();
       }
       if ($env{'form.scantron_options_redo'} eq 'redo_skipped') {
    &remember_current_skipped();
    $env{'form.scantron_options_redo'}='redo_skipped_ready';
       }
   
       if ($env{'form.scantron_options_ignore'} eq 'ignore_corrections') {
    &check_for_error($r,&scantron_remove_file('corrected'));
    &check_for_error($r,&scantron_remove_file('skipped'));
    &check_for_error($r,&scantron_remove_scan_data());
    $env{'form.scantron_options_ignore'}='done';
       }
   
       if ($env{'form.scantron_corrections'}) {
    &scantron_process_corrections($r);
       }
   
       $r->print('<p>'.&mt('Gathering necessary information.').'</p>');
       my ($checksec,@gradable);
       if ($env{'request.course.sec'}) {
           ($checksec,my @possibles) = &gradable_sections();
           if ($checksec) {
               if (@possibles) {
                   my @chosensecs = &Apache::loncommon::get_env_multiple('form.scantron_othersections');
                   if (@chosensecs) {
                       foreach my $sec (@chosensecs) {
                           if (grep(/^\Q$sec\E$/,@possibles)) {
                               unless (grep(/^\Q$sec\E$/,@gradable)) {
                                   push(@gradable,$sec);
                               }
                           }
                       }
                   }
               }
               $r->print('<p><table>');
               if (@gradable) {
                   my @showsections = sort { $a <=> $b } (@gradable,$checksec);
                   $r->print(
                       '<tr><td><b>'.&mt('Sections to be Graded:').'</b></td><td>'.join(', ',@showsections).'</td></tr>');
               } else {
                   $r->print(
                       '<tr><td><b>'.&mt('Section to be Graded:').'</b></td><td>'.$checksec.'</td></tr>');
               }
               $r->print('</table></p>');
           }
       }
       $r->rflush();
   
       #get the student pick code ready
       $r->print(&Apache::loncommon::studentbrowser_javascript());
       my $nav_error;
       my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
       my $max_bubble=&scantron_get_maxbubble(\$nav_error,\%scantron_config);
       if ($nav_error) {
           $r->print(&navmap_errormsg());
           return '';
       }
       my $result=&scantron_form_start($max_bubble).$default_form_data;
       if ($env{'form.scantron_lastbubblepoints'} ne '') {
           $result .= '<input type="hidden" name="scantron_lastbubblepoints" value="'.$env{'form.scantron_lastbubblepoints'}.'" />';
       }
       $r->print($result);
           
     if ($ENV{'browser.mathml'}) {      my @validate_phases=( 'sequence',
  $request->content_type('text/xml');    'ID',
     'CODE',
     'doublebubble',
     'missingbubbles');
       if (!$env{'form.validatepass'}) {
    $env{'form.validatepass'} = 0;
       }
       my $currentphase=$env{'form.validatepass'};
       my %skipbysec=();
   
       my $stop=0;
       while (!$stop && $currentphase < scalar(@validate_phases)) {
    $r->print(&mt('Validating '.$validate_phases[$currentphase]).'<br />');
    $r->rflush();
        
    my $which="scantron_validate_".$validate_phases[$currentphase];
    {
       no strict 'refs';
               my @extras=();
               if ($validate_phases[$currentphase] eq 'ID') {
                   @extras = (\%skipbysec,$checksec,@gradable);
               }
       ($stop,$currentphase)=&$which($r,$currentphase,@extras);
    }
       }
       if (!$stop) {
    my $warning=&scantron_warning_screen('Start Grading',$symb);
           my $secinfo;
           if (keys(%skipbysec) > 0) {
               my $seclist = '<ul>';
               foreach my $sec (sort { $a <=> $b } keys(%skipbysec)) {
                   $seclist .= '<li>'.&mt('section [_1]: [_2]',$sec,$skipbysec{$sec}).'</li>';
               }
               $seclist .= '</ul>';
               $secinfo = '<p class="LC_info">'.
                          &mt('Numbers of records for students in sections not being graded [_1]',
                              $seclist).
                          '</p>';
           }
    $r->print(&mt('Validation process complete.').'<br />'.
                     $secinfo.$warning.
                     &mt('Perform verification for each student after storage of submissions?').
                     '&nbsp;<span class="LC_nobreak"><label>'.
                     '<input type="radio" name="verifyrecord" value="1" />'.&mt('Yes').'</label>'.
                     ('&nbsp;'x3).'<label>'.
                     '<input type="radio" name="verifyrecord" value="0" checked="checked" />'.&mt('No').
                     '</label></span><br />'.
                     &mt('Grading will take longer if you use verification.').'<br />'.
                     &mt('Otherwise, Grade/Manage/Review Bubblesheets [_1] Review bubblesheet data can be used once grading is complete.','&raquo;').'<br /><br />'.
                     '<input type="submit" name="submit" value="'.&mt('Start Grading').'" />'.
                     '<input type="hidden" name="command" value="scantron_process" />'."\n");
     } else {      } else {
  $request->content_type('text/html');   $r->print('<input type="hidden" name="command" value="scantron_validate" />');
    $r->print("<input type='hidden' name='validatepass' value='".$currentphase."' />");
     }      }
     $request->send_http_header;      if ($stop) {
     return '' if $request->header_only;   if ($validate_phases[$currentphase] eq 'sequence') {
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});      $r->print('<input type="submit" name="submit" value="'.&mt('Ignore').' &rarr; " />');
     my $url=$ENV{'form.url'};      $r->print(' '.&mt('this error').' <br />');
     my $symb=$ENV{'form.symb'};  
     my $command=$ENV{'form.command'};      $r->print('<p>'.&mt('Or return to [_1]Grade/Manage/Review Bubblesheets[_2] to start over.','<a href="/adm/grades?symb='.$symb.'&command=scantron_selectphase" class="LC_info">','</a>').'</p>');
     if (!$url) {   } else {
  my ($temp1,$temp2);              if ($validate_phases[$currentphase] eq 'doublebubble' || $validate_phases[$currentphase] eq 'missingbubbles') {
  ($temp1,$temp2,$ENV{'form.url'})=split(/___/,$symb);          $r->print('<input type="button" name="submitbutton" value="'.&mt('Continue').' &rarr;" onclick="javascript:verify_bubble_radio(this.form)" />');
  $url = $ENV{'form.url'};              } else {
     }                  $r->print('<input type="submit" name="submit" value="'.&mt('Continue').' &rarr;" />');
     &send_header($request);              }
     if ($url eq '' && $symb eq '') {      $r->print(' '.&mt('using corrected info').' <br />');
  if ($ENV{'user.adv'}) {      $r->print("<input type='submit' value='".&mt("Skip")."' name='scantron_skip_record' />");
     if (($ENV{'form.codeone'}) && ($ENV{'form.codetwo'}) &&      $r->print(" ".&mt("this scanline saving it for later."));
  ($ENV{'form.codethree'})) {   }
  my $token=$ENV{'form.codeone'}.'*'.$ENV{'form.codetwo'}.'*'.      }
     $ENV{'form.codethree'};      $r->print(" </form><br />");
  my ($tsymb,$tuname,$tudom,$tcrsid)=      return '';
     &Apache::lonnet::checkin($token);  }
  if ($tsymb) {  
     my ($map,$id,$url)=split(/\_\_\_/,$tsymb);  
     if (&Apache::lonnet::allowed('mgr',$tcrsid)) {  =pod
  $request->print(  
  &Apache::lonnet::ssi('/res/'.$url,  =item scantron_remove_file
      ('grade_username' => $tuname,  
       'grade_domain' => $tudom,     Removes the requested bubblesheet data file, makes sure that
       'grade_courseid' => $tcrsid,     scantron_original_<filename> is never removed
       'grade_symb' => $tsymb)));  
     } else {  
  $request->print('<h3>Not authorized: '.$token.'</h3>');  =cut
     }             
  } else {  sub scantron_remove_file {
     $request->print('<h3>Not a valid DocID: '.$token.'</h3>');      my ($which)=@_;
       my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
       my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
       my $file='scantron_';
       if ($which eq 'corrected' || $which eq 'skipped') {
    $file.=$which.'_';
       } else {
    return 'refused';
       }
       $file.=$env{'form.scantron_selectfile'};
       return &Apache::lonnet::removeuserfile($cname,$cdom,$file);
   }
   
   
   =pod
   
   =item scantron_remove_scan_data
   
      Removes all scan_data correction for the requested bubblesheet
      data file.  (In the case that both the are doing skipped records we need
      to remember the old skipped lines for the time being so that element
      persists for a while.)
   
   =cut
   
   sub scantron_remove_scan_data {
       my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
       my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
       my @keys=&Apache::lonnet::getkeys('nohist_scantrondata',$cdom,$cname);
       my @todelete;
       my $filename=$env{'form.scantron_selectfile'};
       foreach my $key (@keys) {
    if ($key=~/^\Q$filename\E_/) {
       if ($env{'form.scantron_options_redo'} eq 'redo_skipped_ready' &&
    $key=~/remember_skipping/) {
    next;
       }
       push(@todelete,$key);
    }
       }
       my $result;
       if (@todelete) {
    $result = &Apache::lonnet::del('nohist_scantrondata',
          \@todelete,$cdom,$cname);
       } else {
    $result = 'ok';
       }
       return $result;
   }
   
   
   =pod
   
   =item scantron_getfile
   
       Fetches the requested bubblesheet data file (all 3 versions), and
       the scan_data hash
     
     Arguments:
       None
   
     Returns:
       2 hash references
   
        - first one has 
            orig      -
            corrected -
            skipped   -  each of which points to an array ref of the specified
                         file broken up into individual lines
            count     - number of scanlines
    
        - second is the scan_data hash possible keys are
          ($number refers to scanline numbered $number and thus the key affects
           only that scanline
           $bubline refers to the specific bubble line element and the aspects
           refers to that specific bubble line element)
   
          $number.user - username:domain to use
          $number.CODE_ignore_dup 
                       - ignore the duplicate CODE error 
          $number.useCODE
                       - use the CODE in the scanline as is
          $number.no_bubble.$bubline
                       - it is valid that there is no bubbled in bubble
                         at $number $bubline
          remember_skipping
                       - a frozen hash containing keys of $number and values
                         of either 
                           1 - we are on a 'do skipped records pass' and plan
                               on processing this line
                           2 - we are on a 'do skipped records pass' and this
                               scanline has been marked to skip yet again
   
   =cut
   
   sub scantron_getfile {
       #FIXME really would prefer a scantron directory
       my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
       my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
       my $lines;
       $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
          'scantron_orig_'.$env{'form.scantron_selectfile'});
       my %scanlines;
       $scanlines{'orig'}=[(split("\n",$lines,-1))];
       my $temp=$scanlines{'orig'};
       $scanlines{'count'}=$#$temp;
   
       $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
          'scantron_corrected_'.$env{'form.scantron_selectfile'});
       if ($lines eq '-1') {
    $scanlines{'corrected'}=[];
       } else {
    $scanlines{'corrected'}=[(split("\n",$lines,-1))];
       }
       $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
          'scantron_skipped_'.$env{'form.scantron_selectfile'});
       if ($lines eq '-1') {
    $scanlines{'skipped'}=[];
       } else {
    $scanlines{'skipped'}=[(split("\n",$lines,-1))];
       }
       my @tmp=&Apache::lonnet::dump('nohist_scantrondata',$cdom,$cname);
       if ($tmp[0] =~ /^(error:|no_such_host)/) { @tmp=(); }
       my %scan_data = @tmp;
       return (\%scanlines,\%scan_data);
   }
   
   =pod
   
   =item lonnet_putfile
   
      Wrapper routine to call &Apache::lonnet::finishuserfileupload
   
    Arguments:
      $contents - data to store
      $filename - filename to store $contents into
   
    Returns:
      result value from &Apache::lonnet::finishuserfileupload
   
   =cut
   
   sub lonnet_putfile {
       my ($contents,$filename)=@_;
       my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
       my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
       $env{'form.sillywaytopassafilearound'}=$contents;
       &Apache::lonnet::finishuserfileupload($docuname,$docudom,'sillywaytopassafilearound',$filename);
   
   }
   
   =pod
   
   =item scantron_putfile
   
       Stores the current version of the bubblesheet data files, and the
       scan_data hash. (Does not modify the original version only the
       corrected and skipped versions.
   
    Arguments:
       $scanlines - hash ref that looks like the first return value from
                    &scantron_getfile()
       $scan_data - hash ref that looks like the second return value from
                    &scantron_getfile()
   
   =cut
   
   sub scantron_putfile {
       my ($scanlines,$scan_data) = @_;
       #FIXME really would prefer a scantron directory
       my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
       my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
       if ($scanlines) {
    my $prefix='scantron_';
   # no need to update orig, shouldn't change
   #   &lonnet_putfile(join("\n",@{$scanlines->{'orig'}}),$prefix.'orig_'.
   #    $env{'form.scantron_selectfile'});
    &lonnet_putfile(join("\n",@{$scanlines->{'corrected'}}),
    $prefix.'corrected_'.
    $env{'form.scantron_selectfile'});
    &lonnet_putfile(join("\n",@{$scanlines->{'skipped'}}),
    $prefix.'skipped_'.
    $env{'form.scantron_selectfile'});
       }
       &Apache::lonnet::put('nohist_scantrondata',$scan_data,$cdom,$cname);
   }
   
   =pod
   
   =item scantron_get_line
   
      Returns the correct version of the scanline
   
    Arguments:
       $scanlines - hash ref that looks like the first return value from
                    &scantron_getfile()
       $scan_data - hash ref that looks like the second return value from
                    &scantron_getfile()
       $i         - number of the requested line (starts at 0)
   
    Returns:
      A scanline, (either the original or the corrected one if it
      exists), or undef if the requested scanline should be
      skipped. (Either because it's an skipped scanline, or it's an
      unskipped scanline and we are not doing a 'do skipped scanlines'
      pass.
   
   =cut
   
   sub scantron_get_line {
       my ($scanlines,$scan_data,$i)=@_;
       if (&should_be_skipped($scanlines,$scan_data,$i)) { return undef; }
       #if ($scanlines->{'skipped'}[$i]) { return undef; }
       if ($scanlines->{'corrected'}[$i]) {return $scanlines->{'corrected'}[$i];}
       return $scanlines->{'orig'}[$i]; 
   }
   
   =pod
   
   =item scantron_todo_count
   
       Counts the number of scanlines that need processing.
   
    Arguments:
       $scanlines - hash ref that looks like the first return value from
                    &scantron_getfile()
       $scan_data - hash ref that looks like the second return value from
                    &scantron_getfile()
   
    Returns:
       $count - number of scanlines to process
   
   =cut
   
   sub get_todo_count {
       my ($scanlines,$scan_data)=@_;
       my $count=0;
       for (my $i=0;$i<=$scanlines->{'count'};$i++) {
    my $line=&scantron_get_line($scanlines,$scan_data,$i);
    if ($line=~/^[\s\cz]*$/) { next; }
    $count++;
       }
       return $count;
   }
   
   =pod
   
   =item scantron_put_line
   
       Updates the 'corrected' or 'skipped' versions of the bubblesheet
       data file.
   
    Arguments:
       $scanlines - hash ref that looks like the first return value from
                    &scantron_getfile()
       $scan_data - hash ref that looks like the second return value from
                    &scantron_getfile()
       $i         - line number to update
       $newline   - contents of the updated scanline
       $skip      - if true make the line for skipping and update the
                    'skipped' file
   
   =cut
   
   sub scantron_put_line {
       my ($scanlines,$scan_data,$i,$newline,$skip)=@_;
       if ($skip) {
    $scanlines->{'skipped'}[$i]=$newline;
    &start_skipping($scan_data,$i);
    return;
       }
       $scanlines->{'corrected'}[$i]=$newline;
   }
   
   =pod
   
   =item scantron_clear_skip
   
      Remove a line from the 'skipped' file
   
    Arguments:
       $scanlines - hash ref that looks like the first return value from
                    &scantron_getfile()
       $scan_data - hash ref that looks like the second return value from
                    &scantron_getfile()
       $i         - line number to update
   
   =cut
   
   sub scantron_clear_skip {
       my ($scanlines,$scan_data,$i)=@_;
       if (exists($scanlines->{'skipped'}[$i])) {
    undef($scanlines->{'skipped'}[$i]);
    return 1;
       }
       return 0;
   }
   
   =pod
   
   =item scantron_filter_not_exam
   
      Filter routine used by &Apache::lonnavmaps::retrieveResources(), to
      filter out resources that are not marked as 'exam' mode
   
   =cut
   
   sub scantron_filter_not_exam {
       my ($curres)=@_;
       
       if (ref($curres) && $curres->is_problem() && !$curres->is_exam()) {
    # if the user has asked to not have either hidden
    # or 'randomout' controlled resources to be graded
    # don't include them
    if ($env{'form.scantron_options_hidden'} eq 'ignore_hidden'
       && $curres->randomout) {
       return 0;
    }
    return 1;
       }
       return 0;
   }
   
   =pod
   
   =item scantron_validate_sequence
   
       Validates the selected sequence, checking for resource that are
       not set to exam mode.
   
   =cut
   
   sub scantron_validate_sequence {
       my ($r,$currentphase) = @_;
   
       my $navmap=Apache::lonnavmaps::navmap->new();
       unless (ref($navmap)) {
           $r->print(&navmap_errormsg());
           return (1,$currentphase);
       }
       my (undef,undef,$sequence)=
    &Apache::lonnet::decode_symb($env{'form.selectpage'});
   
       my $map=$navmap->getResourceByUrl($sequence);
   
       $r->print('<input type="hidden" name="validate_sequence_exam"
                                       value="ignore" />');
       if ($env{'form.validate_sequence_exam'} ne 'ignore') {
    my @resources=
       $navmap->retrieveResources($map,\&scantron_filter_not_exam,1,0);
    if (@resources) {
       $r->print(
                   '<p class="LC_warning">'
                  .&mt('Some resources in the sequence currently are not set to'
                      .' bubblesheet exam mode. Grading these resources currently may not'
                      .' work correctly.')
                  .'</p>'
               );
       return (1,$currentphase);
    }
       }
   
       return (0,$currentphase+1);
   }
   
   
   
   sub scantron_validate_ID {
       my ($r,$currentphase,$skipbysec,$checksec,@gradable) = @_;
       
       #get student info
       my $classlist=&Apache::loncoursedata::get_classlist();
       my %idmap=&username_to_idmap($classlist);
       my $secidx = &Apache::loncoursedata::CL_SECTION();
   
       #get scantron line setup
       my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
       my ($scanlines,$scan_data)=&scantron_getfile();
   
       my $nav_error;
       &scantron_get_maxbubble(\$nav_error,\%scantron_config); # parse needs the bubble_lines.. array.
       if ($nav_error) {
           $r->print(&navmap_errormsg());
           return(1,$currentphase);
       }
   
       my %found=('ids'=>{},'usernames'=>{});
       my $unsavedskips = 0;
       for (my $i=0;$i<=$scanlines->{'count'};$i++) {
    my $line=&scantron_get_line($scanlines,$scan_data,$i);
    if ($line=~/^[\s\cz]*$/) { next; }
    my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
    $scan_data);
    my $id=$$scan_record{'scantron.ID'};
    my $found;
    foreach my $checkid (keys(%idmap)) {
       if (lc($checkid) eq lc($id)) { $found=$checkid;last; }
    }
    if ($found) {
       my $username=$idmap{$found};
               if ($checksec) {
                   if (ref($classlist->{$username}) eq 'ARRAY') {
                       my $stusec = $classlist->{$username}->[$secidx];
                       if ($stusec ne $checksec) {
                           unless ((@gradable > 0) && (grep(/^\Q$stusec\E$/,@gradable))) {
                               my $skip=1;
                               &scantron_put_line($scanlines,$scan_data,$i,$line,$skip);
                               if (ref($skipbysec) eq 'HASH') {
                                   if ($stusec eq '') {
                                       $skipbysec->{'none'} ++;
                                   } else {
                                       $skipbysec->{$stusec} ++;
                                   }
                               }
                               $unsavedskips ++;
                               next;
                           }
                       }
                   }
               }
       if ($found{'ids'}{$found}) {
    &scantron_get_correction($r,$i,$scan_record,\%scantron_config,
    $line,'duplicateID',$found);
                   if ($unsavedskips) {
                       &scantron_putfile($scanlines,$scan_data);
                       $unsavedskips = 0;
                   }
    return(1,$currentphase);
       } elsif ($found{'usernames'}{$username}) {
    &scantron_get_correction($r,$i,$scan_record,\%scantron_config,
    $line,'duplicateID',$username);
                   if ($unsavedskips) {
                       &scantron_putfile($scanlines,$scan_data);
                       $unsavedskips = 0;
                   }
    return(1,$currentphase);
       }
       #FIXME store away line we previously saw the ID on to use above
       $found{'ids'}{$found}++;
       $found{'usernames'}{$username}++;
    } else {
       if ($id =~ /^\s*$/) {
    my $username=&scan_data($scan_data,"$i.user");
                   if (($checksec && $username ne '')) {
                       if (ref($classlist->{$username}) eq 'ARRAY') {
                           my $stusec = $classlist->{$username}->[$secidx];
                           if ($stusec ne $checksec) {
                               unless ((@gradable > 0) && (grep(/^\Q$stusec\E$/,@gradable))) {
                                   my $skip=1;
                                   &scantron_put_line($scanlines,$scan_data,$i,$line,$skip);
                                   if (ref($skipbysec) eq 'HASH') {
                                       if ($stusec eq '') {
                                           $skipbysec->{'none'} ++;
                                       } else {
                                           $skipbysec->{$stusec} ++;
                                       }
                                   }
                                   $unsavedskips ++;
                                   next;
                               }
                           }
                       }
    } elsif (defined($username) && $found{'usernames'}{$username}) {
       &scantron_get_correction($r,$i,$scan_record,
        \%scantron_config,
        $line,'duplicateID',$username);
                       if ($unsavedskips) {
                           &scantron_putfile($scanlines,$scan_data);
                           $unsavedskips = 0;
                       }
       return(1,$currentphase);
    } elsif (!defined($username)) {
       &scantron_get_correction($r,$i,$scan_record,
        \%scantron_config,
        $line,'incorrectID');
                       if ($unsavedskips) {
                           &scantron_putfile($scanlines,$scan_data);
                           $unsavedskips = 0;
                       }
       return(1,$currentphase);
  }   }
    $found{'usernames'}{$username}++;
     } else {      } else {
  $request->print(&Apache::lonxml::tokeninputfield());   &scantron_get_correction($r,$i,$scan_record,\%scantron_config,
    $line,'incorrectID');
                   if ($unsavedskips) {
                       &scantron_putfile($scanlines,$scan_data);
                       $unsavedskips = 0;
                   }
    return(1,$currentphase);
     }      }
  }   }
       }
       if ($unsavedskips) {
           &scantron_putfile($scanlines,$scan_data);
           $unsavedskips = 0;
       }
       return (0,$currentphase+1);
   }
   
   sub scantron_get_sections {
       my %bysec;
       if ($env{'form.scantron_format'} ne '') {
           my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
           my ($scanlines,$scan_data)=&scantron_getfile();
           my $classlist=&Apache::loncoursedata::get_classlist();
           my %idmap=&username_to_idmap($classlist);
           foreach my $key (keys(%idmap)) {
               my $lckey = lc($key);
               $idmap{$lckey} = $idmap{$key};
           }
           my $secidx = &Apache::loncoursedata::CL_SECTION();
           for (my $i=0;$i<=$scanlines->{'count'};$i++) {
               my $line=&scantron_get_line($scanlines,$scan_data,$i);
               if ($line=~/^[\s\cz]*$/) { next; }
               my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
                                                        $scan_data);
               my $id=lc($$scan_record{'scantron.ID'});
               if (exists($idmap{$id})) {
                   if (ref($classlist->{$idmap{$id}}) eq 'ARRAY') {
                       my $stusec = $classlist->{$idmap{$id}}->[$secidx];
                       if ($stusec eq '') {
                           $bysec{'none'} ++;
                       } else {
                           $bysec{$stusec} ++;
                       }
                   }
               }
           }
       }
       return %bysec;
   }
   
   sub scantron_get_correction {
       my ($r,$i,$scan_record,$scan_config,$line,$error,$arg,
           $randomorder,$randompick,$respnumlookup,$startline)=@_;
   #FIXME in the case of a duplicated ID the previous line, probably need
   #to show both the current line and the previous one and allow skipping
   #the previous one or the current one
   
       if ( $$scan_record{'scantron.PaperID'} =~ /\S/) {
           $r->print(
               '<p class="LC_warning">'
              .&mt('An error was detected ([_1]) for PaperID [_2]',
                   "<b>$error</b>",
                   '<tt>'.$$scan_record{'scantron.PaperID'}.'</tt>')
              ."</p> \n");
       } else {
           $r->print(
               '<p class="LC_warning">'
              .&mt('An error was detected ([_1]) in scanline [_2] [_3]',
                   "<b>$error</b>", $i, "<pre>$line</pre>")
              ."</p> \n");
       }
       my $message =
           '<p>'
          .&mt('The ID on the form is [_1]',
               "<tt>$$scan_record{'scantron.ID'}</tt>")
          .'<br />'
          .&mt('The name on the paper is [_1], [_2]',
               $$scan_record{'scantron.LastName'},
               $$scan_record{'scantron.FirstName'})
          .'</p>';
   
       $r->print('<input type="hidden" name="scantron_corrections" value="'.$error.'" />'."\n");
       $r->print('<input type="hidden" name="scantron_line" value="'.$i.'" />'."\n");
                              # Array populated for doublebubble or
       my @lines_to_correct;  # missingbubble errors to build javascript
                              # to validate radio button checking   
   
       if ($error =~ /ID$/) {
    if ($error eq 'incorrectID') {
               $r->print('<p class="LC_warning">'.&mt("The encoded ID is not in the classlist").
         "</p>\n");
    } elsif ($error eq 'duplicateID') {
               $r->print('<p class="LC_warning">'.&mt("The encoded ID has also been used by a previous paper [_1]",$arg)."</p>\n");
    }
    $r->print($message);
    $r->print("<p>".&mt("How should I handle this?")." <br /> \n");
    $r->print("\n<ul><li> ");
    #FIXME it would be nice if this sent back the user ID and
    #could do partial userID matches
    $r->print(&Apache::loncommon::selectstudent_link('scantronupload',
          'scantron_username','scantron_domain'));
    $r->print(": <input type='text' name='scantron_username' value='' />");
    $r->print("\n:\n".
    &Apache::loncommon::select_dom_form($env{'request.role.domain'},'scantron_domain'));
   
    $r->print('</li>');
       } elsif ($error =~ /CODE$/) {
    if ($error eq 'incorrectCODE') {
       $r->print('<p class="LC_warning">'.&mt("The encoded CODE is not in the list of possible CODEs.")."</p>\n");
    } elsif ($error eq 'duplicateCODE') {
       $r->print('<p class="LC_warning">'.&mt("The encoded CODE has also been used by a previous paper [_1], and CODEs are supposed to be unique.",join(', ',@{$arg}))."</p>\n");
    }
    $r->print("<p>".&mt('The CODE on the form is [_1]',
       "<tt>'$$scan_record{'scantron.CODE'}'</tt>")
                    ."</p>\n");
    $r->print($message);
    $r->print("<p>".&mt("How should I handle this?")."</p>\n");
    $r->print("\n<br /> ");
    my $i=0;
    if ($error eq 'incorrectCODE' 
       && $$scan_record{'scantron.CODE'}=~/\S/ ) {
       my ($max,$closest)=&scantron_get_closely_matching_CODEs($arg,$$scan_record{'scantron.CODE'});
       if ($closest > 0) {
    foreach my $testcode (@{$closest}) {
       my $checked='';
       if (!$i) { $checked=' checked="checked"'; }
       $r->print("
      <label>
          <input type='radio' name='scantron_CODE_resolution' value='use_closest_$i'$checked />
          ".&mt("Use the similar CODE [_1] instead.",
       "<b><tt>".$testcode."</tt></b>")."
       </label>
       <input type='hidden' name='scantron_CODE_closest_$i' value='$testcode' />");
       $r->print("\n<br />");
       $i++;
    }
       }
    }
    if ($$scan_record{'scantron.CODE'}=~/\S/ ) {
       my $checked; if (!$i) { $checked=' checked="checked"'; }
       $r->print("
       <label>
           <input type='radio' name='scantron_CODE_resolution' value='use_unfound'$checked />
          ".&mt("Use the CODE [_1] that was on the paper, ignoring the error.",
        "<b><tt>".$$scan_record{'scantron.CODE'}."</tt></b>")."
       </label>");
       $r->print("\n<br />");
    }
   
    $r->print(&Apache::lonhtmlcommon::scripttag(<<ENDSCRIPT));
   function change_radio(field) {
       var slct=document.scantronupload.scantron_CODE_resolution;
       var i;
       for (i=0;i<slct.length;i++) {
           if (slct[i].value==field) { slct[i].checked=true; }
       }
   }
   ENDSCRIPT
    my $href="/adm/pickcode?".
      "form=".&escape("scantronupload").
      "&scantron_format=".&escape($env{'form.scantron_format'}).
      "&scantron_CODElist=".&escape($env{'form.scantron_CODElist'}).
      "&curCODE=".&escape($$scan_record{'scantron.CODE'}).
      "&scantron_selectfile=".&escape($env{'form.scantron_selectfile'});
    if ($env{'form.scantron_CODElist'} =~ /\S/) { 
       $r->print("
       <label>
          <input type='radio' name='scantron_CODE_resolution' value='use_found' />
          ".&mt("[_1]Select[_2] a CODE from the list of all CODEs and use it.",
        "<a target='_blank' href='$href'>","</a>")."
       </label> 
       ".&mt("Selected CODE is [_1]",'<input readonly="readonly" type="text" size="8" name="scantron_CODE_selectedvalue" onfocus="javascript:change_radio(\'use_found\')" onchange="javascript:change_radio(\'use_found\')" />'));
       $r->print("\n<br />");
    }
    $r->print("
       <label>
          <input type='radio' name='scantron_CODE_resolution' value='use_typed' />
          ".&mt("Use [_1] as the CODE.",
        "</label><input type='text' size='8' name='scantron_CODE_newvalue' onfocus=\"javascript:change_radio('use_typed')\" onkeypress=\"javascript:change_radio('use_typed')\" />"));
    $r->print("\n<br /><br />");
       } elsif ($error eq 'doublebubble') {
    $r->print('<p class="LC_warning">'.&mt("There have been multiple bubbles scanned for some question(s)")."</p>\n");
   
    # The form field scantron_questions is acutally a list of line numbers.
    # represented by this form so:
   
    my $line_list = &questions_to_line_list($arg,$randomorder,$randompick,
                                                   $respnumlookup,$startline);
   
    $r->print('<input type="hidden" name="scantron_questions" value="'.
     $line_list.'" />');
    $r->print($message);
    $r->print("<p>".&mt("Please indicate which bubble should be used for grading")."</p>");
    foreach my $question (@{$arg}) {
       my @linenums = &prompt_for_corrections($r,$question,$scan_config,
                                                      $scan_record, $error,
                                                      $randomorder,$randompick,
                                                      $respnumlookup,$startline);
               push(@lines_to_correct,@linenums);
    }
           $r->print(&verify_bubbles_checked(@lines_to_correct));
       } elsif ($error eq 'missingbubble') {
    $r->print('<p class="LC_warning">'.&mt("There have been [_1]no[_2] bubbles scanned for some question(s)",'<b>','</b>')."</p>\n");
    $r->print($message);
    $r->print("<p>".&mt("Please indicate which bubble should be used for grading.")."</p>");
    $r->print(&mt("Some questions have no scanned bubbles.")."\n");
   
    # The form field scantron_questions is actually a list of line numbers not
    # a list of question numbers. Therefore:
    #
   
    my $line_list = &questions_to_line_list($arg,$randomorder,$randompick,
                                                   $respnumlookup,$startline);
   
    $r->print('<input type="hidden" name="scantron_questions" value="'.
     $line_list.'" />');
    foreach my $question (@{$arg}) {
       my @linenums = &prompt_for_corrections($r,$question,$scan_config,
                                                      $scan_record, $error,
                                                      $randomorder,$randompick,
                                                      $respnumlookup,$startline);
               push(@lines_to_correct,@linenums);
    }
           $r->print(&verify_bubbles_checked(@lines_to_correct));
       } else {
    $r->print("\n<ul>");
       }
       $r->print("\n</li></ul>");
   }
   
   sub verify_bubbles_checked {
       my (@ansnums) = @_;
       my $ansnumstr = join('","',@ansnums);
       my $warning = &mt("A bubble or 'No bubble' selection has not been made for one or more lines.");
       &js_escape(\$warning);
       my $output = &Apache::lonhtmlcommon::scripttag(<<ENDSCRIPT);
   function verify_bubble_radio(form) {
       var ansnumArray = new Array ("$ansnumstr");
       var need_bubble_count = 0;
       for (var i=0; i<ansnumArray.length; i++) {
           if (form.elements["scantron_correct_Q_"+ansnumArray[i]].length > 1) {
               var bubble_picked = 0; 
               for (var j=0; j<form.elements["scantron_correct_Q_"+ansnumArray[i]].length; j++) {
                   if (form.elements["scantron_correct_Q_"+ansnumArray[i]][j].checked == true) {
                       bubble_picked = 1;
                   }
               }
               if (bubble_picked == 0) {
                   need_bubble_count ++;
               }
           }
       }
       if (need_bubble_count) {
           alert("$warning");
           return;
       }
       form.submit(); 
   }
   ENDSCRIPT
       return $output;
   }
   
   =pod
   
   =item  questions_to_line_list
   
   Converts a list of questions into a string of comma separated
   line numbers in the answer sheet used by the questions.  This is
   used to fill in the scantron_questions form field.
   
     Arguments:
        questions    - Reference to an array of questions.
        randomorder  - True if randomorder in use.
        randompick   - True if randompick in use.
        respnumlookup - Reference to HASH mapping question numbers in bubble lines
                        for current line to question number used for same question
                        in "Master Seqence" (as seen by Course Coordinator).
        startline    - Reference to hash where key is question number (0 is first)
                       and key is number of first bubble line for current student
                       or code-based randompick and/or randomorder.
   
   =cut
   
   
   sub questions_to_line_list {
       my ($questions,$randomorder,$randompick,$respnumlookup,$startline) = @_;
       my @lines;
   
       foreach my $item (@{$questions}) {
           my $question = $item;
           my ($first,$count,$last);
           if ($item =~ /^(\d+)\.(\d+)$/) {
               $question = $1;
               my $subquestion = $2;
               my $responsenum = $question-1;
               if (($randomorder || $randompick) && (ref($respnumlookup) eq 'HASH')) {
                   $responsenum = $respnumlookup->{$question-1};
                   if (ref($startline) eq 'HASH') {
                       $first = $startline->{$question-1} + 1;
                   }
               } else {
                   $first = $first_bubble_line{$responsenum} + 1;
               }
               my @subans = split(/,/,$subdivided_bubble_lines{$responsenum});
               my $subcount = 1;
               while ($subcount<$subquestion) {
                   $first += $subans[$subcount-1];
                   $subcount ++;
               }
               $count = $subans[$subquestion-1];
           } else {
               my $responsenum = $question-1;
               if (($randomorder || $randompick) && (ref($respnumlookup) eq 'HASH')) {
                   $responsenum = $respnumlookup->{$question-1};
                   if (ref($startline) eq 'HASH') {
                       $first = $startline->{$question-1} + 1;
                   }
               } else {
                   $first = $first_bubble_line{$responsenum} + 1;
               }
       $count   = $bubble_lines_per_response{$responsenum};
           }
           $last = $first+$count-1;
           push(@lines, ($first..$last));
       }
       return join(',', @lines);
   }
   
   =pod 
   
   =item prompt_for_corrections
   
   Prompts for a potentially multiline correction to the
   user's bubbling (factors out common code from scantron_get_correction
   for multi and missing bubble cases).
   
    Arguments:
      $r           - Apache request object.
      $question    - The question number to prompt for.
      $scan_config - The scantron file configuration hash.
      $scan_record - Reference to the hash that has the the parsed scanlines.
      $error       - Type of error
      $randomorder - True if randomorder in use.
      $randompick  - True if randompick in use.
      $respnumlookup - Reference to HASH mapping question numbers in bubble lines
                       for current line to question number used for same question
                       in "Master Seqence" (as seen by Course Coordinator).
      $startline   - Reference to hash where key is question number (0 is first)
                     and value is number of first bubble line for current student
                     or code-based randompick and/or randomorder.
   
   
    Implicit inputs:
      %bubble_lines_per_response   - Starting line numbers for each question.
                                     Numbered from 0 (but question numbers are from
                                     1.
      %first_bubble_line           - Starting bubble line for each question.
      %subdivided_bubble_lines     - optionresponse, matchresponse and rankresponse 
                                     type problems render as separate sub-questions, 
                                     in exam mode. This hash contains a 
                                     comma-separated list of the lines per 
                                     sub-question.
      %responsetype_per_response   - essayresponse, formularesponse,
                                     stringresponse, imageresponse, reactionresponse,
                                     and organicresponse type problem parts can have
                                     multiple lines per response if the weight
                                     assigned exceeds 10.  In this case, only
                                     one bubble per line is permitted, but more 
                                     than one line might contain bubbles, e.g.
                                     bubbling of: line 1 - J, line 2 - J, 
                                     line 3 - B would assign 22 points.  
   
   =cut
   
   sub prompt_for_corrections {
       my ($r, $question, $scan_config, $scan_record, $error, $randomorder,
           $randompick, $respnumlookup, $startline) = @_;
       my ($current_line,$lines);
       my @linenums;
       my $questionnum = $question;
       my ($first,$responsenum);
       if ($question =~ /^(\d+)\.(\d+)$/) {
           $question = $1;
           my $subquestion = $2;
           if (($randomorder || $randompick) && (ref($respnumlookup) eq 'HASH')) {
               $responsenum = $respnumlookup->{$question-1};
               if (ref($startline) eq 'HASH') {
                   $first = $startline->{$question-1};
               }
           } else {
               $responsenum = $question-1;
               $first = $first_bubble_line{$responsenum};
           }
           $current_line = $first + 1 ;
           my @subans = split(/,/,$subdivided_bubble_lines{$responsenum});
           my $subcount = 1;
           while ($subcount<$subquestion) {
               $current_line += $subans[$subcount-1];
               $subcount ++;
           }
           $lines = $subans[$subquestion-1];
       } else {
           if (($randomorder || $randompick) && (ref($respnumlookup) eq 'HASH')) {
               $responsenum = $respnumlookup->{$question-1};
               if (ref($startline) eq 'HASH') { 
                   $first = $startline->{$question-1};
               }
           } else {
               $responsenum = $question-1;
               $first = $first_bubble_line{$responsenum};
           }
           $current_line = $first + 1;
           $lines        = $bubble_lines_per_response{$responsenum};
       }
       if ($lines > 1) {
           $r->print(&mt('The group of bubble lines below responds to a single question.').'<br />');
           if (($responsetype_per_response{$responsenum} eq 'essayresponse') ||
               ($responsetype_per_response{$responsenum} eq 'formularesponse') ||
               ($responsetype_per_response{$responsenum} eq 'stringresponse') ||
               ($responsetype_per_response{$responsenum} eq 'imageresponse') ||
               ($responsetype_per_response{$responsenum} eq 'reactionresponse') ||
               ($responsetype_per_response{$responsenum} eq 'organicresponse')) {
               $r->print(
                   &mt("Although this particular question type requires handgrading, the instructions for this question in the bubblesheet exam directed students to leave [quant,_1,line] blank on their bubblesheets.",$lines)
                  .'<br /><br />'
                  .&mt('A non-zero score can be assigned to the student during bubblesheet grading by selecting a bubble in at least one line.')
                  .'<br />'
                  .&mt('The score for this question will be a sum of the numeric values for the selected bubbles from each line, where A=1 point, B=2 points etc.')
                  .'<br />'
                  .&mt("To assign a score of zero for this question, mark all lines as 'No bubble'.")
                  .'<br /><br />'
               );
           } else {
               $r->print(&mt("Select at most one bubble in a single line and select 'No Bubble' in all the other lines. ")."<br />");
           }
       }
       for (my $i =0; $i < $lines; $i++) {
           my $selected = $$scan_record{"scantron.$current_line.answer"};
    &scantron_bubble_selector($r,$scan_config,$current_line,
             $questionnum,$error,split('', $selected));
           push(@linenums,$current_line);
    $current_line++;
       }
       if ($lines > 1) {
    $r->print("<hr /><br />");
       }
       return @linenums;
   }
   
   =pod
   
   =item scantron_bubble_selector
     
      Generates the html radiobuttons to correct a single bubble line
      possibly showing the existing the selected bubbles if known
   
    Arguments:
       $r           - Apache request object
       $scan_config - hash from &Apache::lonnet::get_scantron_config()
       $line        - Number of the line being displayed.
       $questionnum - Question number (may include subquestion)
       $error       - Type of error.
       @selected    - Array of bubbles picked on this line.
   
   =cut
   
   sub scantron_bubble_selector {
       my ($r,$scan_config,$line,$questionnum,$error,@selected)=@_;
       my $max=$$scan_config{'Qlength'};
   
       my $scmode=$$scan_config{'Qon'};
       if ($scmode eq 'number' || $scmode eq 'letter') { 
           if (($$scan_config{'BubblesPerRow'} =~ /^\d+$/) &&
               ($$scan_config{'BubblesPerRow'} > 0)) {
               $max=$$scan_config{'BubblesPerRow'};
               if (($scmode eq 'number') && ($max > 10)) {
                   $max = 10;
               } elsif (($scmode eq 'letter') && $max > 26) {
                   $max = 26;
               }
           } else {
               $max = 10;
           }
       }
   
       my @alphabet=('A'..'Z');
       $r->print(&Apache::loncommon::start_data_table().
                 &Apache::loncommon::start_data_table_row());
       $r->print('<td rowspan="2" class="LC_leftcol_header">'.$line.'</td>');
       for (my $i=0;$i<$max+1;$i++) {
    $r->print("\n".'<td align="center">');
    if ($selected[0] eq $alphabet[$i]) { $r->print('X'); shift(@selected) }
    else { $r->print('&nbsp;'); }
    $r->print('</td>');
       }
       $r->print(&Apache::loncommon::end_data_table_row().
                 &Apache::loncommon::start_data_table_row());
       for (my $i=0;$i<$max;$i++) {
    $r->print("\n".
     '<td><label><input type="radio" name="scantron_correct_Q_'.
     $line.'" value="'.$i.'" />'.$alphabet[$i]."</label></td>");
       }
       my $nobub_checked = ' ';
       if ($error eq 'missingbubble') {
           $nobub_checked = ' checked = "checked" ';
       }
       $r->print("\n".'<td><label><input type="radio" name="scantron_correct_Q_'.
         $line.'" value="none"'.$nobub_checked.'/>'.&mt('No bubble').
                 '</label>'."\n".'<input type="hidden" name="scantron_questionnum_Q_'.
                 $line.'" value="'.$questionnum.'" /></td>');
       $r->print(&Apache::loncommon::end_data_table_row().
                 &Apache::loncommon::end_data_table());
   }
   
   =pod
   
   =item num_matches
   
      Counts the number of characters that are the same between the two arguments.
   
    Arguments:
      $orig - CODE from the scanline
      $code - CODE to match against
   
    Returns:
      $count - integer count of the number of same characters between the
               two arguments
   
   =cut
   
   sub num_matches {
       my ($orig,$code) = @_;
       my @code=split(//,$code);
       my @orig=split(//,$orig);
       my $same=0;
       for (my $i=0;$i<scalar(@code);$i++) {
    if ($code[$i] eq $orig[$i]) { $same++; }
       }
       return $same;
   }
   
   =pod
   
   =item scantron_get_closely_matching_CODEs
   
      Cycles through all CODEs and finds the set that has the greatest
      number of same characters as the provided CODE
   
    Arguments:
      $allcodes - hash ref returned by &get_codes()
      $CODE     - CODE from the current scanline
   
    Returns:
      2 element list
       - first elements is number of how closely matching the best fit is 
         (5 means best set has 5 matching characters)
       - second element is an arrary ref containing the set of valid CODEs
         that best fit the passed in CODE
   
   =cut
   
   sub scantron_get_closely_matching_CODEs {
       my ($allcodes,$CODE)=@_;
       my @CODEs;
       foreach my $testcode (sort(keys(%{$allcodes}))) {
    push(@{$CODEs[&num_matches($CODE,$testcode)]},$testcode);
       }
   
       return ($#CODEs,$CODEs[-1]);
   }
   
   =pod
   
   =item get_codes
   
      Builds a hash which has keys of all of the valid CODEs from the selected
      set of remembered CODEs.
   
    Arguments:
     $old_name - name of the set of remembered CODEs
     $cdom     - domain of the course
     $cnum     - internal course name
   
    Returns:
     %allcodes - keys are the valid CODEs, values are all 1
   
   =cut
   
   sub get_codes {
       my ($old_name, $cdom, $cnum) = @_;
       if (!$old_name) {
    $old_name=$env{'form.scantron_CODElist'};
       }
       if (!$cdom) {
    $cdom =$env{'course.'.$env{'request.course.id'}.'.domain'};
       }
       if (!$cnum) {
    $cnum =$env{'course.'.$env{'request.course.id'}.'.num'};
       }
       my %result=&Apache::lonnet::get('CODEs',[$old_name,"type\0$old_name"],
       $cdom,$cnum);
       my %allcodes;
       if ($result{"type\0$old_name"} eq 'number') {
    %allcodes=map {($_,1)} split(',',$result{$old_name});
       } else {
    %allcodes=map {(&Apache::lonprintout::num_to_letters($_),1)} split(',',$result{$old_name});
       }
       return %allcodes;
   }
   
   =pod
   
   =item scantron_validate_CODE
   
      Validates all scanlines in the selected file to not have any
      invalid or underspecified CODEs and that none of the codes are
      duplicated if this was requested.
   
   =cut
   
   sub scantron_validate_CODE {
       my ($r,$currentphase) = @_;
       my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
       if ($scantron_config{'CODElocation'} &&
    $scantron_config{'CODEstart'} &&
    $scantron_config{'CODElength'}) {
    if (!defined($env{'form.scantron_CODElist'})) {
       &FIXME_blow_up()
    }
       } else {
    return (0,$currentphase+1);
       }
       
       my %usedCODEs;
   
       my %allcodes=&get_codes();
   
       my $nav_error;
       &scantron_get_maxbubble(\$nav_error,\%scantron_config); # parse needs the lines per response array.
       if ($nav_error) {
           $r->print(&navmap_errormsg());
           return(1,$currentphase);
       }
   
       my ($scanlines,$scan_data)=&scantron_getfile();
       for (my $i=0;$i<=$scanlines->{'count'};$i++) {
    my $line=&scantron_get_line($scanlines,$scan_data,$i);
    if ($line=~/^[\s\cz]*$/) { next; }
    my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
    $scan_data);
    my $CODE=$$scan_record{'scantron.CODE'};
    my $error=0;
    if (!&Apache::lonnet::validCODE($CODE)) {
       &scantron_get_correction($r,$i,$scan_record,
        \%scantron_config,
        $line,'incorrectCODE',\%allcodes);
       return(1,$currentphase);
    }
    if (%allcodes && !exists($allcodes{$CODE}) 
       && !$$scan_record{'scantron.useCODE'}) {
       &scantron_get_correction($r,$i,$scan_record,
        \%scantron_config,
        $line,'incorrectCODE',\%allcodes);
       return(1,$currentphase);
    }
    if (exists($usedCODEs{$CODE}) 
       && $env{'form.scantron_CODEunique'} eq 'yes'
       && !$$scan_record{'scantron.CODE_ignore_dup'}) {
       &scantron_get_correction($r,$i,$scan_record,
        \%scantron_config,
        $line,'duplicateCODE',$usedCODEs{$CODE});
       return(1,$currentphase);
    }
    push(@{$usedCODEs{$CODE}},$$scan_record{'scantron.PaperID'});
       }
       return (0,$currentphase+1);
   }
   
   =pod
   
   =item scantron_validate_doublebubble
   
      Validates all scanlines in the selected file to not have any
      bubble lines with multiple bubbles marked.
   
   =cut
   
   sub scantron_validate_doublebubble {
       my ($r,$currentphase) = @_;
       #get student info
       my $classlist=&Apache::loncoursedata::get_classlist();
       my %idmap=&username_to_idmap($classlist);
       my (undef,undef,$sequence)=
           &Apache::lonnet::decode_symb($env{'form.selectpage'});
   
       #get scantron line setup
       my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
       my ($scanlines,$scan_data)=&scantron_getfile();
   
       my $navmap = Apache::lonnavmaps::navmap->new();
       unless (ref($navmap)) {
           $r->print(&navmap_errormsg());
           return(1,$currentphase);
       }
       my $map=$navmap->getResourceByUrl($sequence);
       my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
       my ($randomorder,$randompick,@master_seq,%symb_to_resource,%grader_partids_by_symb,
           %grader_randomlists_by_symb,%orderedforcode,%respnumlookup,%startline);
       my $bubbles_per_row = &bubblesheet_bubbles_per_row(\%scantron_config);
   
       my $nav_error;
       if (ref($map)) {
           $randomorder = $map->randomorder();
           $randompick = $map->randompick();
           if ($randomorder || $randompick) {
               $nav_error = &get_master_seq(\@resources,\@master_seq,\%symb_to_resource);
               if ($nav_error) {
                   $r->print(&navmap_errormsg());
                   return(1,$currentphase);
               }
               &graders_resources_pass(\@resources,\%grader_partids_by_symb,
                                       \%grader_randomlists_by_symb,$bubbles_per_row);
           }
       } else {
           $r->print(&navmap_errormsg());
           return(1,$currentphase);
       }
   
       &scantron_get_maxbubble(\$nav_error,\%scantron_config); # parse needs the bubble line array.
       if ($nav_error) {
           $r->print(&navmap_errormsg());
           return(1,$currentphase);
       }
   
       for (my $i=0;$i<=$scanlines->{'count'};$i++) {
    my $line=&scantron_get_line($scanlines,$scan_data,$i);
    if ($line=~/^[\s\cz]*$/) { next; }
    my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
    $scan_data,undef,\%idmap,$randomorder,
                                                    $randompick,$sequence,\@master_seq,
                                                    \%symb_to_resource,\%grader_partids_by_symb,
                                                    \%orderedforcode,\%respnumlookup,\%startline);
    if (!defined($$scan_record{'scantron.doubleerror'})) { next; }
    &scantron_get_correction($r,$i,$scan_record,\%scantron_config,$line,
    'doublebubble',
    $$scan_record{'scantron.doubleerror'},
                                    $randomorder,$randompick,\%respnumlookup,\%startline);
       return (1,$currentphase);
       }
       return (0,$currentphase+1);
   }
   
   
   sub scantron_get_maxbubble {
       my ($nav_error,$scantron_config) = @_;
       if (defined($env{'form.scantron_maxbubble'}) &&
    $env{'form.scantron_maxbubble'}) {
    &restore_bubble_lines();
    return $env{'form.scantron_maxbubble'};
       }
   
       my (undef, undef, $sequence) =
    &Apache::lonnet::decode_symb($env{'form.selectpage'});
   
       my $navmap=Apache::lonnavmaps::navmap->new();
       unless (ref($navmap)) {
           if (ref($nav_error)) {
               $$nav_error = 1;
           }
           return;
       }
       my $map=$navmap->getResourceByUrl($sequence);
       my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
       my $bubbles_per_row = &bubblesheet_bubbles_per_row($scantron_config);
   
       &Apache::lonxml::clear_problem_counter();
   
       my $uname       = $env{'user.name'};
       my $udom        = $env{'user.domain'};
       my $cid         = $env{'request.course.id'};
       my $total_lines = 0;
       %bubble_lines_per_response = ();
       %first_bubble_line         = ();
       %subdivided_bubble_lines   = ();
       %responsetype_per_response = ();
       %masterseq_id_responsenum  = ();
   
       my $response_number = 0;
       my $bubble_line     = 0;
       foreach my $resource (@resources) {
           my $resid = $resource->id(); 
           my ($analysis,$parts) = &scantron_partids_tograde($resource,$cid,$uname,
                                                             $udom,undef,$bubbles_per_row);
           if ((ref($analysis) eq 'HASH') && (ref($parts) eq 'ARRAY')) {
       foreach my $part_id (@{$parts}) {
                   my $lines;
   
           # TODO - make this a persistent hash not an array.
   
                   # optionresponse, matchresponse and rankresponse type items 
                   # render as separate sub-questions in exam mode.
                   if (($analysis->{$part_id.'.type'} eq 'optionresponse') ||
                       ($analysis->{$part_id.'.type'} eq 'matchresponse') ||
                       ($analysis->{$part_id.'.type'} eq 'rankresponse')) {
                       my ($numbub,$numshown);
                       if ($analysis->{$part_id.'.type'} eq 'optionresponse') {
                           if (ref($analysis->{$part_id.'.options'}) eq 'ARRAY') {
                               $numbub = scalar(@{$analysis->{$part_id.'.options'}});
                           }
                       } elsif ($analysis->{$part_id.'.type'} eq 'matchresponse') {
                           if (ref($analysis->{$part_id.'.items'}) eq 'ARRAY') {
                               $numbub = scalar(@{$analysis->{$part_id.'.items'}});
                           }
                       } elsif ($analysis->{$part_id.'.type'} eq 'rankresponse') {
                           if (ref($analysis->{$part_id.'.foils'}) eq 'ARRAY') {
                               $numbub = scalar(@{$analysis->{$part_id.'.foils'}});
                           }
                       }
                       if (ref($analysis->{$part_id.'.shown'}) eq 'ARRAY') {
                           $numshown = scalar(@{$analysis->{$part_id.'.shown'}});
                       }
                       my $bubbles_per_row =
                           &bubblesheet_bubbles_per_row($scantron_config);
                       my $inner_bubble_lines = int($numbub/$bubbles_per_row);
                       if (($numbub % $bubbles_per_row) != 0) {
                           $inner_bubble_lines++;
                       }
                       for (my $i=0; $i<$numshown; $i++) {
                           $subdivided_bubble_lines{$response_number} .= 
                               $inner_bubble_lines.',';
                       }
                       $subdivided_bubble_lines{$response_number} =~ s/,$//;
                       $lines = $numshown * $inner_bubble_lines;
                   } else {
                       $lines = $analysis->{"$part_id.bubble_lines"};
                   }
   
                   $first_bubble_line{$response_number} = $bubble_line;
           $bubble_lines_per_response{$response_number} = $lines;
                   $responsetype_per_response{$response_number} = 
                       $analysis->{$part_id.'.type'};
                   $masterseq_id_responsenum{$resid.'_'.$part_id} = $response_number;  
           $response_number++;
   
           $bubble_line +=  $lines;
           $total_lines +=  $lines;
       }
           }
       }
       &Apache::lonnet::delenv('scantron.');
   
       &save_bubble_lines();
       $env{'form.scantron_maxbubble'} =
    $total_lines;
       return $env{'form.scantron_maxbubble'};
   }
   
   sub bubblesheet_bubbles_per_row {
       my ($scantron_config) = @_;
       my $bubbles_per_row;
       if (ref($scantron_config) eq 'HASH') {
           $bubbles_per_row = $scantron_config->{'BubblesPerRow'};
       }
       if ((!$bubbles_per_row) || ($bubbles_per_row < 1)) {
           $bubbles_per_row = 10;
       }
       return $bubbles_per_row;
   }
   
   sub scantron_validate_missingbubbles {
       my ($r,$currentphase) = @_;
       #get student info
       my $classlist=&Apache::loncoursedata::get_classlist();
       my %idmap=&username_to_idmap($classlist);
       my (undef,undef,$sequence)=
           &Apache::lonnet::decode_symb($env{'form.selectpage'});
   
       #get scantron line setup
       my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
       my ($scanlines,$scan_data)=&scantron_getfile();
   
       my $navmap = Apache::lonnavmaps::navmap->new();
       unless (ref($navmap)) {
           $r->print(&navmap_errormsg());
           return(1,$currentphase);
       }
   
       my $map=$navmap->getResourceByUrl($sequence);
       my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
       my ($randomorder,$randompick,@master_seq,%symb_to_resource,%grader_partids_by_symb,
           %grader_randomlists_by_symb,%orderedforcode,%respnumlookup,%startline);
       my $bubbles_per_row = &bubblesheet_bubbles_per_row(\%scantron_config);
   
       my $nav_error;
       if (ref($map)) {
           $randomorder = $map->randomorder();
           $randompick = $map->randompick();
           if ($randomorder || $randompick) {
               $nav_error = &get_master_seq(\@resources,\@master_seq,\%symb_to_resource);
               if ($nav_error) {
                   $r->print(&navmap_errormsg());
                   return(1,$currentphase);
               }
               &graders_resources_pass(\@resources,\%grader_partids_by_symb,
                                       \%grader_randomlists_by_symb,$bubbles_per_row);
           }
       } else {
           $r->print(&navmap_errormsg());
           return(1,$currentphase);
       }
   
   
       my $max_bubble=&scantron_get_maxbubble(\$nav_error,\%scantron_config);
       if ($nav_error) {
           $r->print(&navmap_errormsg());
           return(1,$currentphase);
       }
   
       if (!$max_bubble) { $max_bubble=2**31; }
       for (my $i=0;$i<=$scanlines->{'count'};$i++) {
    my $line=&scantron_get_line($scanlines,$scan_data,$i);
    if ($line=~/^[\s\cz]*$/) { next; }
    my $scan_record =
               &scantron_parse_scanline($line,$i,\%scantron_config,$scan_data,undef,\%idmap,
        $randomorder,$randompick,$sequence,\@master_seq,
                                        \%symb_to_resource,\%grader_partids_by_symb,
                                        \%orderedforcode,\%respnumlookup,\%startline);
    if (!defined($$scan_record{'scantron.missingerror'})) { next; }
    my @to_correct;
   
    # Probably here's where the error is...
   
    foreach my $missing (@{$$scan_record{'scantron.missingerror'}}) {
               my $lastbubble;
               if ($missing =~ /^(\d+)\.(\d+)$/) {
                  my $question = $1;
                  my $subquestion = $2;
                  my ($first,$responsenum);
                  if ($randomorder || $randompick) {
                      $responsenum = $respnumlookup{$question-1};
                      $first = $startline{$question-1};
                  } else {
                      $responsenum = $question-1; 
                      $first = $first_bubble_line{$responsenum};
                  }
                  if (!defined($first)) { next; }
                  my @subans = split(/,/,$subdivided_bubble_lines{$responsenum});
                  my $subcount = 1;
                  while ($subcount<$subquestion) {
                      $first += $subans[$subcount-1];
                      $subcount ++;
                  }
                  my $count = $subans[$subquestion-1];
                  $lastbubble = $first + $count;
               } else {
                  my ($first,$responsenum);
                  if ($randomorder || $randompick) {
                      $responsenum = $respnumlookup{$missing-1};
                      $first = $startline{$missing-1};
                  } else {
                      $responsenum = $missing-1;
                      $first = $first_bubble_line{$responsenum};
                  }
                  if (!defined($first)) { next; }
                  $lastbubble = $first + $bubble_lines_per_response{$responsenum};
               }
               if ($lastbubble > $max_bubble) { next; }
       push(@to_correct,$missing);
    }
    if (@to_correct) {
       &scantron_get_correction($r,$i,$scan_record,\%scantron_config,
        $line,'missingbubble',\@to_correct,
                                        $randomorder,$randompick,\%respnumlookup,
                                        \%startline);
       return (1,$currentphase);
    }
   
       }
       return (0,$currentphase+1);
   }
   
   sub hand_bubble_option {
       my (undef, undef, $sequence) =
           &Apache::lonnet::decode_symb($env{'form.selectpage'});
       return if ($sequence eq '');
       my $navmap = Apache::lonnavmaps::navmap->new();
       unless (ref($navmap)) {
           return;
       }
       my $needs_hand_bubbles;
       my $map=$navmap->getResourceByUrl($sequence);
       my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
       foreach my $res (@resources) {
           if (ref($res)) {
               if ($res->is_problem()) {
                   my $partlist = $res->parts();
                   foreach my $part (@{ $partlist }) {
                       my @types = $res->responseType($part);
                       if (grep(/^(chem|essay|image|formula|math|string|functionplot)$/,@types)) {
                           $needs_hand_bubbles = 1;
                           last;
                       }
                   }
               }
           }
       }
       if ($needs_hand_bubbles) {
           my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
           my $bubbles_per_row = &bubblesheet_bubbles_per_row(\%scantron_config);
           return &mt('The sequence to be graded contains response types which are handgraded.').'<p>'.
                  &mt('If you have already graded these by bubbling sheets to indicate points awarded, [_1]what point value is assigned to a filled last bubble in each row?','<br />').
                  '<label><input type="radio" name="scantron_lastbubblepoints" value="'.$bubbles_per_row.'" checked="checked" />'.&mt('[quant,_1,point]',$bubbles_per_row).'</label>&nbsp;'.&mt('or').'&nbsp;'.
                  '<label><input type="radio" name="scantron_lastbubblepoints" value="0" />'.&mt('0 points').'</label></p>';
       }
       return;
   }
   
   sub scantron_process_students {
       my ($r,$symb) = @_;
   
       my (undef,undef,$sequence)=&Apache::lonnet::decode_symb($env{'form.selectpage'});
       if (!$symb) {
    return '';
       }
       my $default_form_data=&defaultFormData($symb);
   
       my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
       my $bubbles_per_row = &bubblesheet_bubbles_per_row(\%scantron_config); 
       my ($scanlines,$scan_data)=&scantron_getfile();
       my $classlist=&Apache::loncoursedata::get_classlist();
       my %idmap=&username_to_idmap($classlist);
       my $navmap=Apache::lonnavmaps::navmap->new();
       unless (ref($navmap)) {
           $r->print(&navmap_errormsg());
           return '';
       }
       my $map=$navmap->getResourceByUrl($sequence);
       my ($randomorder,$randompick,@master_seq,%symb_to_resource,%grader_partids_by_symb,
           %grader_randomlists_by_symb);
       if (ref($map)) {
           $randomorder = $map->randomorder();
           $randompick = $map->randompick();
       } else {
           $r->print(&navmap_errormsg());
           return '';
       }
       my $nav_error;
       my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
       if ($randomorder || $randompick) {
           $nav_error = &get_master_seq(\@resources,\@master_seq,\%symb_to_resource);
           if ($nav_error) {
               $r->print(&navmap_errormsg());
               return '';
           }
       }
       &graders_resources_pass(\@resources,\%grader_partids_by_symb,
                               \%grader_randomlists_by_symb,$bubbles_per_row);
   
       my ($uname,$udom);
       my $result= <<SCANTRONFORM;
   <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
     <input type="hidden" name="command" value="scantron_configphase" />
     $default_form_data
   SCANTRONFORM
       $r->print($result);
   
       my ($checksec,@possibles)=&gradable_sections();
       my @delayqueue;
       my (%completedstudents,%scandata);
   
       my $lock=&Apache::lonnet::set_lock(&mt('Grading bubblesheet exam'));
       my $count=&get_todo_count($scanlines,$scan_data);
       my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,$count);
       &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,'Processing first student');
       $r->print('<br />');
       my $start=&Time::HiRes::time();
       my $i=-1;
       my $started;
   
       &scantron_get_maxbubble(\$nav_error,\%scantron_config); # Need the bubble lines array to parse.
       if ($nav_error) {
           $r->print(&navmap_errormsg());
           return '';
       }
   
       # If an ssi failed in scantron_get_maxbubble, put an error message out to
       # the user and return.
   
       if ($ssi_error) {
    $r->print("</form>");
    &ssi_print_error($r);
           &Apache::lonnet::remove_lock($lock);
    return ''; # Dunno why the other returns return '' rather than just returning.
       }
   
       my %lettdig = &Apache::lonnet::letter_to_digits();
       my $numletts = scalar(keys(%lettdig));
       my %orderedforcode;
   
       while ($i<$scanlines->{'count'}) {
     ($uname,$udom)=('','');
     $i++;
     my $line=&scantron_get_line($scanlines,$scan_data,$i);
     if ($line=~/^[\s\cz]*$/) { next; }
    if ($started) {
       &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
    }
    $started=1;
           my %respnumlookup = ();
           my %startline = ();
           my $total;
     my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
                                                    $scan_data,undef,\%idmap,$randomorder,
                                                    $randompick,$sequence,\@master_seq,
                                                    \%symb_to_resource,\%grader_partids_by_symb,
                                                    \%orderedforcode,\%respnumlookup,\%startline,
                                                    \$total);
     unless ($uname=&scantron_find_student($scan_record,$scan_data,
          \%idmap,$i)) {
        &scantron_add_delay(\@delayqueue,$line,
     'Unable to find a student that matches',1);
        next;
     }
     if (exists $completedstudents{$uname}) {
        &scantron_add_delay(\@delayqueue,$line,
     'Student '.$uname.' has multiple sheets',2);
        next;
     }
           my $usec = $classlist->{$uname}->[&Apache::loncoursedata::CL_SECTION];
           if (($checksec ne '') && ($checksec ne $usec)) {
               unless (grep(/^\Q$usec\E$/,@possibles)) {
                   &scantron_add_delay(\@delayqueue,$line,
                                       "No role with manage grades privilege in student's section ($usec)",3);
                   next;
               }
           }
           my $user = $uname.':'.$usec;
     ($uname,$udom)=split(/:/,$uname);
   
           my $scancode;
           if ((exists($scan_record->{'scantron.CODE'})) &&
               (&Apache::lonnet::validCODE($scan_record->{'scantron.CODE'}))) {
               $scancode = $scan_record->{'scantron.CODE'};
           } else {
               $scancode = '';
           }
   
           my @mapresources = @resources;
           if ($randomorder || $randompick) {
               @mapresources = 
                   &users_order($user,$scancode,$sequence,\@master_seq,\%symb_to_resource,
                                \%orderedforcode);
           }
           my (%partids_by_symb,$res_error);
           foreach my $resource (@mapresources) {
               my $ressymb;
               if (ref($resource)) {
                   $ressymb = $resource->symb();
               } else {
                   $res_error = 1;
                   last;
               }
               if ((exists($grader_randomlists_by_symb{$ressymb})) ||
                   (ref($grader_partids_by_symb{$ressymb}) ne 'ARRAY')) {
                   my $currcode;
                   if (exists($grader_randomlists_by_symb{$ressymb})) {
                       $currcode = $scancode;
                   }
                   my ($analysis,$parts) =
                       &scantron_partids_tograde($resource,$env{'request.course.id'},
                                                 $uname,$udom,undef,$bubbles_per_row,
                                                 $currcode);
                   $partids_by_symb{$ressymb} = $parts;
               } else {
                   $partids_by_symb{$ressymb} = $grader_partids_by_symb{$ressymb};
               }
           }
   
           if ($res_error) {
               &scantron_add_delay(\@delayqueue,$line,
                                   'An error occurred while grading student '.$uname,2);
               next;
           }
   
    &Apache::lonxml::clear_problem_counter();
     &Apache::lonnet::appenv($scan_record);
   
    if (&scantron_clear_skip($scanlines,$scan_data,$i)) {
       &scantron_putfile($scanlines,$scan_data);
    }
   
           if (&grade_student_bubbles($r,$uname,$udom,$scan_record,$scancode,
                                      \@mapresources,\%partids_by_symb,
                                      $bubbles_per_row,$randomorder,$randompick,
                                      \%respnumlookup,\%startline) 
               eq 'ssi_error') {
               $ssi_error = 0; # So end of handler error message does not trigger.
               $r->print("</form>");
               &ssi_print_error($r);
               &Apache::lonnet::remove_lock($lock);
               return '';      # Why return ''?  Beats me.
           }
   
           if (($scancode) && ($randomorder || $randompick)) {
               my $parmresult =
                   &Apache::lonparmset::storeparm_by_symb($symb,
                                                          '0_examcode',2,$scancode,
                                                          'string_examcode',$uname,
                                                          $udom);
           }
    $completedstudents{$uname}={'line'=>$line};
           if ($env{'form.verifyrecord'}) {
               my $lastpos = $env{'form.scantron_maxbubble'}*$scantron_config{'Qlength'};
               if ($randompick) {
                   if ($total) {
                       $lastpos = $total*$scantron_config{'Qlength'};
                   }
               }
   
               my $studentdata = substr($line,$scantron_config{'Qstart'}-1,$lastpos);
               chomp($studentdata);
               $studentdata =~ s/\r$//;
               my $studentrecord = '';
               my $counter = -1;
               foreach my $resource (@mapresources) {
                   my $ressymb = $resource->symb();
                   ($counter,my $recording) =
                       &verify_scantron_grading($resource,$udom,$uname,$env{'request.course.id'},
                                                $counter,$studentdata,$partids_by_symb{$ressymb},
                                                \%scantron_config,\%lettdig,$numletts,$randomorder,
                                                $randompick,\%respnumlookup,\%startline);
                   $studentrecord .= $recording;
               }
               if ($studentrecord ne $studentdata) {
                   &Apache::lonxml::clear_problem_counter();
                   if (&grade_student_bubbles($r,$uname,$udom,$scan_record,$scancode,
                                              \@mapresources,\%partids_by_symb,
                                              $bubbles_per_row,$randomorder,$randompick,
                                              \%respnumlookup,\%startline) 
                       eq 'ssi_error') {
                       $ssi_error = 0; # So end of handler error message does not trigger.
                       $r->print("</form>");
                       &ssi_print_error($r);
                       &Apache::lonnet::remove_lock($lock);
                       delete($completedstudents{$uname});
                       return '';
                   }
                   $counter = -1;
                   $studentrecord = '';
                   foreach my $resource (@mapresources) {
                       my $ressymb = $resource->symb();
                       ($counter,my $recording) =
                           &verify_scantron_grading($resource,$udom,$uname,$env{'request.course.id'},
                                                    $counter,$studentdata,$partids_by_symb{$ressymb},
                                                    \%scantron_config,\%lettdig,$numletts,
                                                    $randomorder,$randompick,\%respnumlookup,
                                                    \%startline);
                       $studentrecord .= $recording;
                   }
                   if ($studentrecord ne $studentdata) {
                       $r->print('<p><span class="LC_warning">');
                       if ($scancode eq '') {
                           $r->print(&mt('Mismatch grading bubblesheet for user: [_1] with ID: [_2].',
                                     $uname.':'.$udom,$scan_record->{'scantron.ID'}));
                       } else {
                           $r->print(&mt('Mismatch grading bubblesheet for user: [_1] with ID: [_2] and CODE: [_3].',
                                     $uname.':'.$udom,$scan_record->{'scantron.ID'},$scancode));
                       }
                       $r->print('</span><br />'.&Apache::loncommon::start_data_table()."\n".
                                 &Apache::loncommon::start_data_table_header_row()."\n".
                                 '<th>'.&mt('Source').'</th><th>'.&mt('Bubbled responses').'</th>'.
                                 &Apache::loncommon::end_data_table_header_row()."\n".
                                 &Apache::loncommon::start_data_table_row().
                                 '<td>'.&mt('Bubblesheet').'</td>'.
                                 '<td><span class="LC_nobreak" style="white-space: pre;"><tt>'.$studentdata.'</tt></span></td>'.
                                 &Apache::loncommon::end_data_table_row().
                                 &Apache::loncommon::start_data_table_row().
                                 '<td>'.&mt('Stored submissions').'</td>'.
                                 '<td><span class="LC_nobreak" style="white-space: pre;"><tt>'.$studentrecord.'</tt></span></td>'."\n".
                                 &Apache::loncommon::end_data_table_row().
                                 &Apache::loncommon::end_data_table().'</p>');
                   } else {
                       $r->print('<br /><span class="LC_warning">'.
                                &mt('A second grading pass was needed for user: [_1] with ID: [_2], because a mismatch was seen on the first pass.',$uname.':'.$udom,$scan_record->{'scantron.ID'}).'<br />'.
                                &mt("As a consequence, this user's submission history records two tries.").
                                    '</span><br />');
                   }
               }
           }
           if (&Apache::loncommon::connection_aborted($r)) { last; }
       } continue {
    &Apache::lonxml::clear_problem_counter();
    &Apache::lonnet::delenv('scantron.');
       }
       &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
       &Apache::lonnet::remove_lock($lock);
   #    my $lasttime = &Time::HiRes::time()-$start;
   #    $r->print("<p>took $lasttime</p>");
   
       $r->print("</form>");
       return '';
   }
   
   sub graders_resources_pass {
       my ($resources,$grader_partids_by_symb,$grader_randomlists_by_symb,
           $bubbles_per_row) = @_;
       if ((ref($resources) eq 'ARRAY') && (ref($grader_partids_by_symb)) && 
           (ref($grader_randomlists_by_symb) eq 'HASH')) {
           foreach my $resource (@{$resources}) {
               my $ressymb = $resource->symb();
               my ($analysis,$parts) =
                   &scantron_partids_tograde($resource,$env{'request.course.id'},
                                             $env{'user.name'},$env{'user.domain'},
                                             1,$bubbles_per_row);
               $grader_partids_by_symb->{$ressymb} = $parts;
               if (ref($analysis) eq 'HASH') {
                   if (ref($analysis->{'parts_withrandomlist'}) eq 'ARRAY') {
                       $grader_randomlists_by_symb->{$ressymb} =
                           $analysis->{'parts_withrandomlist'};
                   }
               }
           }
       }
       return;
   }
   
   =pod
   
   =item users_order
   
     Returns array of resources in current map, ordered based on either CODE,
     if this is a CODEd exam, or based on student's identity if this is a 
     "NAMEd" exam.
   
     Should be used when randomorder and/or randompick applied when the 
     corresponding exam was printed, prior to students completing bubblesheets 
     for the version of the exam the student received.
   
   =cut
   
   sub users_order  {
       my ($user,$scancode,$mapurl,$master_seq,$symb_to_resource,$orderedforcode) = @_;
       my @mapresources;
       unless ((ref($master_seq) eq 'ARRAY') && (ref($symb_to_resource) eq 'HASH')) {
           return @mapresources;
       }
       if ($scancode) {
           if ((ref($orderedforcode) eq 'HASH') && (ref($orderedforcode->{$scancode}) eq 'ARRAY')) {
               @mapresources = @{$orderedforcode->{$scancode}};
           } else {
               $env{'form.CODE'} = $scancode;
               my $actual_seq =
                   &Apache::lonprintout::master_seq_to_person_seq($mapurl,
                                                                  $master_seq,
                                                                  $user,$scancode,1);
               if (ref($actual_seq) eq 'ARRAY') {
                   @mapresources = map { $symb_to_resource->{$_}; } @{$actual_seq};
                   if (ref($orderedforcode) eq 'HASH') {
                       if (@mapresources > 0) { 
                           $orderedforcode->{$scancode} = \@mapresources;
                       }
                   }
               }
               delete($env{'form.CODE'});
           }
       } else {
           my $actual_seq =
               &Apache::lonprintout::master_seq_to_person_seq($mapurl,
                                                              $master_seq,
                                                              $user,undef,1);
           if (ref($actual_seq) eq 'ARRAY') {
               @mapresources = 
                   map { $symb_to_resource->{$_}; } @{$actual_seq};
           }
       }
       return @mapresources;
   }
   
   sub grade_student_bubbles {
       my ($r,$uname,$udom,$scan_record,$scancode,$resources,$parts,$bubbles_per_row,
           $randomorder,$randompick,$respnumlookup,$startline) = @_;
       my $uselookup = 0;
       if (($randomorder || $randompick) && (ref($respnumlookup) eq 'HASH') &&
           (ref($startline) eq 'HASH')) {
           $uselookup = 1;
       }
   
       if (ref($resources) eq 'ARRAY') {
           my $count = 0;
           foreach my $resource (@{$resources}) {
               my $ressymb = $resource->symb();
               my %form = ('submitted'      => 'scantron',
                           'grade_target'   => 'grade',
                           'grade_username' => $uname,
                           'grade_domain'   => $udom,
                           'grade_courseid' => $env{'request.course.id'},
                           'grade_symb'     => $ressymb,
                           'CODE'           => $scancode
                          );
               if ($bubbles_per_row ne '') {
                   $form{'bubbles_per_row'} = $bubbles_per_row;
               }
               if ($env{'form.scantron_lastbubblepoints'} ne '') {
                   $form{'scantron_lastbubblepoints'} = $env{'form.scantron_lastbubblepoints'};
               }
               if (ref($parts) eq 'HASH') {
                   if (ref($parts->{$ressymb}) eq 'ARRAY') {
                       foreach my $part (@{$parts->{$ressymb}}) {
                           if ($uselookup) {
                               $form{'scantron_questnum_start.'.$part} = $startline->{$count} + 1;
                           } else {
                               $form{'scantron_questnum_start.'.$part} =
                                   1+$env{'form.scantron.first_bubble_line.'.$count};
                           }
                           $count++;
                       }
                   }
               }
               my $result=&ssi_with_retries($resource->src(),$ssi_retries,%form);
               return 'ssi_error' if ($ssi_error);
               last if (&Apache::loncommon::connection_aborted($r));
           }
       }
       return;
   }
   
   sub scantron_upload_scantron_data {
       my ($r,$symb) = @_;
       my $dom = $env{'request.role.domain'};
       my ($formatoptions,$formattitle,$formatjs) = &scantron_upload_dataformat($dom);
       my $domdesc = &Apache::lonnet::domain($dom,'description');
       $r->print(&Apache::loncommon::coursebrowser_javascript($dom));
       my $select_link=&Apache::loncommon::selectcourse_link('rules','courseid',
     'domainid',
     'coursename',$dom);
       my $syllabuslink = '<a href="javascript:ToSyllabus();">'.&mt('Syllabus').'</a>'.
                          ('&nbsp'x2).&mt('(shows course personnel)'); 
       my $default_form_data=&defaultFormData($symb);
       my $nofile_alert = &mt('Please use the browse button to select a file from your local directory.');
       &js_escape(\$nofile_alert);
       my $nocourseid_alert = &mt("Please use the 'Select Course' link to open a separate window where you can search for a course to which a file can be uploaded.");
       &js_escape(\$nocourseid_alert);
       $r->print(&Apache::lonhtmlcommon::scripttag('
       function checkUpload(formname) {
    if (formname.upfile.value == "") {
       alert("'.$nofile_alert.'");
       return false;
    }
           if (formname.courseid.value == "") {
               alert("'.$nocourseid_alert.'");
               return false;
           }
    formname.submit();
       }
   
       function ToSyllabus() {
           var cdom = '."'$dom'".';
           var cnum = document.rules.courseid.value;
           if (cdom == "" || cdom == null) {
               return;
           }
           if (cnum == "" || cnum == null) {
              return;
           }
           syllwin=window.open("/public/"+cdom+"/"+cnum+"/syllabus","LONCAPASyllabus",
                               "height=350,width=350,scrollbars=yes,menubar=no");
           return;
       }
   
       '.$formatjs.'
   '));
       $r->print('
   <h3>'.&mt('Send bubblesheet data to a course').'</h3>
   
   <form enctype="multipart/form-data" action="/adm/grades" name="rules" method="post">
   '.$default_form_data.
     &Apache::lonhtmlcommon::start_pick_box().
     &Apache::lonhtmlcommon::row_title(&mt('Course ID')).
     '<input name="courseid" type="text" size="30" />'.$select_link.
     &Apache::lonhtmlcommon::row_closure().
     &Apache::lonhtmlcommon::row_title(&mt('Course Name')).
     '<input name="coursename" type="text" size="30" />'.$syllabuslink.
     &Apache::lonhtmlcommon::row_closure().
     &Apache::lonhtmlcommon::row_title(&mt('Domain')).
     '<input name="domainid" type="hidden" />'.$domdesc.
     &Apache::lonhtmlcommon::row_closure());
       if ($formatoptions) {
           $r->print(&Apache::lonhtmlcommon::row_title($formattitle).$formatoptions.
                     &Apache::lonhtmlcommon::row_closure());
       }
       $r->print(
     &Apache::lonhtmlcommon::row_title(&mt('File to upload')).
     '<input type="file" name="upfile" size="50" />'.
     &Apache::lonhtmlcommon::row_closure(1).
     &Apache::lonhtmlcommon::end_pick_box().'<br />
   
   <input name="command" value="scantronupload_save" type="hidden" />
   <input type="button" onclick="javascript:checkUpload(this.form);" value="'.&mt('Upload Bubblesheet Data').'" />
   </form>
   ');
       return '';
   }
   
   sub scantron_upload_dataformat {
       my ($dom) = @_;
       my ($formatoptions,$formattitle,$formatjs);
       $formatjs = <<'END';
   function toggleScantab(form) {
      return;
   }
   END
       my %domconfig = &Apache::lonnet::get_dom('configuration',['scantron'],$dom);
       if (ref($domconfig{'scantron'}) eq 'HASH') {
           if (ref($domconfig{'scantron'}{'config'}) eq 'HASH') {
               if (keys(%{$domconfig{'scantron'}{'config'}}) > 1) {
                   if (($domconfig{'scantron'}{'config'}{'dat'}) &&
                       (ref($domconfig{'scantron'}{'config'}{'csv'}) eq 'HASH')) {
                       if (ref($domconfig{'scantron'}{'config'}{'csv'}{'fields'}) eq 'HASH') {  
                           if (keys(%{$domconfig{'scantron'}{'config'}{'csv'}{'fields'}})) {
                               my ($onclick,$formatextra,$singleline);
                               my @lines = &Apache::lonnet::get_scantronformat_file();
                               my $count = 0;
                               foreach my $line (@lines) {
                                   next if ($line =~ /^#/);
                                   $singleline = $line;
                                   $count ++;
                               }
                               if ($count > 1) {
                                   $formatextra = '<div style="display:none" id="bubbletype">'.
                                                  '<span class="LC_nobreak">'.
                                                  &mt('Bubblesheet type').':&nbsp;'.
                                                  &scantron_scantab().'</span></div>';
                                   $onclick = ' onclick="toggleScantab(this.form);"';
                                   $formatjs = <<"END";
   function toggleScantab(form) {
       var divid = 'bubbletype';
       if (document.getElementById(divid)) {
           var radioname = 'fileformat';
           var num = form.elements[radioname].length;
           if (num) {
               for (var i=0; i<num; i++) {
                   if (form.elements[radioname][i].checked) {
                       var chosen = form.elements[radioname][i].value;
                       if (chosen == 'dat') {
                           document.getElementById(divid).style.display = 'none';
                       } else if (chosen == 'csv') {
                           document.getElementById(divid).style.display = 'block';
                       }
                   }
               }
           }
       }
       return;
   }
   
   END
                               } elsif ($count == 1) {
                                   my $formatname = (split(/:/,$singleline,2))[0];
                                   $formatextra = '<input type="hidden" name="scantron_format" value="'.$formatname.'" />';
                               }
                               $formattitle = &mt('File format');
                               $formatoptions = '<label><input name="fileformat" type="radio" value="dat" checked="checked"'.$onclick.' />'.
                                                &mt('Plain Text (no delimiters)').
                                                '</label>'.('&nbsp;'x2).
                                                '<label><input name="fileformat" type="radio" value="csv"'.$onclick.' />'.
                                                &mt('Comma separated values').'</label>'.$formatextra;
                           }
                       }
                   }
               } elsif (keys(%{$domconfig{'scantron'}{'config'}}) == 1) {
                   if (ref($domconfig{'scantron'}{'config'}{'csv'}{'fields'}) eq 'HASH') {
                       if (keys(%{$domconfig{'scantron'}{'config'}{'csv'}{'fields'}})) {
                           $formattitle = &mt('Bubblesheet type');
                           $formatoptions = &scantron_scantab();
                       }
                   }
               }
           }
       }
       return ($formatoptions,$formattitle,$formatjs);
   }
   
   sub scantron_upload_scantron_data_save {
       my ($r,$symb) = @_;
       my $doanotherupload=
    '<br /><form action="/adm/grades" method="post">'."\n".
    '<input type="hidden" name="command" value="scantronupload" />'."\n".
    '<input type="submit" name="submit" value="'.&mt('Do Another Upload').'" />'."\n".
    '</form>'."\n";
       if (!&Apache::lonnet::allowed('usc',$env{'form.domainid'}) &&
    !&Apache::lonnet::allowed('usc',
       $env{'form.domainid'}.'_'.$env{'form.courseid'}) &&
           !&Apache::lonnet::allowed('usc',
                               $env{'form.domainid'}.'_'.$env{'form.courseid'}.'/'.$env{'form.coursesec'})) {
    $r->print(&mt("You are not allowed to upload bubblesheet data to the requested course.")."<br />");
    unless ($symb) {
       $r->print($doanotherupload);
    }
    return '';
       }
       my %coursedata=&Apache::lonnet::coursedescription($env{'form.domainid'}.'_'.$env{'form.courseid'});
       my $uploadedfile;
       $r->print('<p>'.&mt('Uploading file to [_1]','"'.$coursedata{'description'}.'"').'</p>');
       if (length($env{'form.upfile'}) < 2) {
           $r->print(
               &Apache::lonhtmlcommon::confirm_success(
                   &mt('The file: [_1] you attempted to upload contained no information. Please check that you entered the correct filename.',
                           '<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"').'</span>'),1));
     } else {      } else {
  $Apache::grades::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});          my %domconfig = &Apache::lonnet::get_dom('configuration',['scantron'],$env{'form.domainid'});
  if ($command eq 'submission') {          my $parser;
     &listStudents($request) if ($ENV{'form.student'} eq '');          if (ref($domconfig{'scantron'}) eq 'HASH') {
     &submission($request,0,0) if ($ENV{'form.student'} ne '');              if (ref($domconfig{'scantron'}{'config'}) eq 'HASH') {
  } elsif ($command eq 'processGroup') {                  my $is_csv;
     &processGroup($request);                  my @possibles = keys(%{$domconfig{'scantron'}{'config'}});
  } elsif ($command eq 'gradingmenu') {                  if (@possibles > 1) {
     $request->print(&gradingmenu($request));                      if ($env{'form.fileformat'} eq 'csv') {
  } elsif ($command eq 'viewgrades') {                          if (ref($domconfig{'scantron'}{'config'}{'csv'}) eq 'HASH') {
     $request->print(&viewgrades($request));                              if (ref($domconfig{'scantron'}{'config'}{'csv'}{'fields'}) eq 'HASH') {
  } elsif ($command eq 'handgrade') {                                  if (keys(%{$domconfig{'scantron'}{'config'}{'csv'}{'fields'}}) > 1) {
     $request->print(&processHandGrade($request));                                      $is_csv = 1;
  } elsif ($command eq 'editgrades') {                                  }
     $request->print(&editgrades($request));                              }
  } elsif ($command eq 'verify') {                          }
     $request->print(&verifyreceipt($request));                      }
  } elsif ($command eq 'csvupload') {                  } elsif (@possibles == 1) {
     $request->print(&csvupload($request));                      if (ref($domconfig{'scantron'}{'config'}{'csv'}) eq 'HASH') {
  } elsif ($command eq 'viewclasslist') {                          if (ref($domconfig{'scantron'}{'config'}{'csv'}{'fields'}) eq 'HASH') {
     $request->print(&viewclasslist($request));                              if (keys(%{$domconfig{'scantron'}{'config'}{'csv'}{'fields'}}) > 1) {
  } elsif ($command eq 'csvuploadmap') {                                  $is_csv = 1;
     $request->print(&csvuploadmap($request));                              }
  } elsif ($command eq 'csvuploadassign') {                          }
     if ($ENV{'form.associate'} ne 'Reverse Association') {                      }
  $request->print(&csvuploadassign($request));                  }
                   if ($is_csv) {
                      $parser = $domconfig{'scantron'}{'config'}{'csv'};
                   }
               }
           }
           my $result =
               &Apache::lonnet::userfileupload('upfile','scantron','scantron',$parser,'','',
                                               $env{'form.courseid'},$env{'form.domainid'});
           if ($result =~ m{^/uploaded/}) {
               $r->print(
                   &Apache::lonhtmlcommon::confirm_success(&mt('Upload successful')).'<br />'.
                   &mt('Uploaded [_1] bytes of data into location: [_2]',
                           (length($env{'form.upfile'})-1),
                           '<span class="LC_filename">'.$result.'</span>'));
               ($uploadedfile) = ($result =~ m{/([^/]+)$});
               if ($uploadedfile =~ /^scantron_orig_/) {
                   my $logname = $uploadedfile;
                   $logname =~ s/^scantron_orig_//;
                   if ($logname ne '') {
                       my $now = time;
                       my %info = ($logname => { $now => $env{'user.name'}.':'.$env{'user.domain'} });  
                       &Apache::lonnet::put('scantronupload',\%info,$env{'form.domainid'},$env{'form.courseid'});
                   }
               }
               $r->print(&validate_uploaded_scantron_file($env{'form.domainid'},
                                                          $env{'form.courseid'},$symb,$uploadedfile));
           } else {
               $r->print(
                   &Apache::lonhtmlcommon::confirm_success(&mt('Upload failed'),1).'<br />'.
                       &mt('An error ([_1]) occurred when attempting to upload the file: [_2]',
                             $result,
     '<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"').'</span>'));
    }
       }
       if ($symb) {
    $r->print(&scantron_selectphase($r,$uploadedfile,$symb));
       } else {
    $r->print($doanotherupload);
       }
       return '';
   }
   
   sub validate_uploaded_scantron_file {
       my ($cdom,$cname,$symb,$fname,$context,$countsref) = @_;
   
       my $scanlines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.$fname);
       my @lines;
       if ($scanlines ne '-1') {
           @lines=split("\n",$scanlines,-1);
       }
       my ($output,$secidx,$checksec,$priv,%crsroleshash,@possibles);
       $secidx = &Apache::loncoursedata::CL_SECTION();
       if ($context eq 'download') {
           $priv = 'mgr';
       } else {
           $priv = 'usc';
       }
       unless ((&Apache::lonnet::allowed($priv,$env{'request.role.domain'})) ||
               (($env{'request.course.id'}) &&
                (&Apache::lonnet::allowed($priv,$env{'request.course.id'})))) {
           if ($env{'request.course.sec'} ne '') {
               unless (&Apache::lonnet::allowed($priv,
                                            "$env{'request.course.id'}/$env{'request.course.sec'}")) {
                   unless ($context eq 'download') {
                       $output = '<p class="LC_warning">'.&mt('You do not have permission to upload bubblesheet data').'</p>';
                   }
                   return $output;
               }
               ($checksec,@possibles)=&gradable_sections();
           }
       }
       if (@lines) {
           my (%counts,$max_match_format);
           my ($found_match_count,$max_match_count,$max_match_pct) = (0,0,0);
           my $classlist = &Apache::loncoursedata::get_classlist($cdom,$cname);
           my %idmap = &username_to_idmap($classlist);
           foreach my $key (keys(%idmap)) {
               my $lckey = lc($key);
               $idmap{$lckey} = $idmap{$key};
           }
           my %unique_formats;
           my @formatlines = &Apache::lonnet::get_scantronformat_file();
           foreach my $line (@formatlines) {
               chomp($line);
               my @config = split(/:/,$line);
               my $idstart = $config[5];
               my $idlength = $config[6];
               if (($idstart ne '') && ($idlength > 0)) {
                   if (ref($unique_formats{$idstart.':'.$idlength}) eq 'ARRAY') {
                       push(@{$unique_formats{$idstart.':'.$idlength}},$config[0].':'.$config[1]); 
                   } else {
                       $unique_formats{$idstart.':'.$idlength} = [$config[0].':'.$config[1]];
                   }
               }
           }
           foreach my $key (keys(%unique_formats)) {
               my ($idstart,$idlength) = split(':',$key);
               %{$counts{$key}} = (
                                  'found'   => 0,
                                  'total'   => 0,
                                  'totalanysec' => 0,
                                  'othersec' => 0,
                                 );
               foreach my $line (@lines) {
                   next if ($line =~ /^#/);
                   next if ($line =~ /^[\s\cz]*$/);
                   my $id = substr($line,$idstart-1,$idlength);
                   $id = lc($id);
                   if (exists($idmap{$id})) {
                       if ($checksec ne '') {
                           $counts{$key}{'totalanysec'} ++;
                           if (ref($classlist->{$idmap{$id}}) eq 'ARRAY') {
                               my $stusec = $classlist->{$idmap{$id}}->[$secidx];
                               if ($stusec ne $checksec) {
                                   if (@possibles) {
                                       unless (grep(/^\Q$stusec\E$/,@possibles)) {
                                           $counts{$key}{'othersec'} ++;
                                           next;
                                       }
                                   } else {
                                       $counts{$key}{'othersec'} ++;
                                       next;
                                   }
                               }
                           }
                       }
                       $counts{$key}{'found'} ++;
                   }
                   $counts{$key}{'total'} ++;
               }
               if ($counts{$key}{'total'}) {
                   my $percent_match = (100*$counts{$key}{'found'})/($counts{$key}{'total'});
                   if (($max_match_format eq '') || ($percent_match > $max_match_pct)) {
                       $max_match_pct = $percent_match;
                       $max_match_format = $key;
                       $found_match_count = $counts{$key}{'found'};
                       $max_match_count = $counts{$key}{'total'};
                   }
               }
           }
           if ((ref($unique_formats{$max_match_format}) eq 'ARRAY') && ($context ne 'download')) {
               my $format_descs;
               my $numwithformat = @{$unique_formats{$max_match_format}};
               for (my $i=0; $i<$numwithformat; $i++) {
                   my ($name,$desc) = split(':',$unique_formats{$max_match_format}[$i]);
                   if ($i<$numwithformat-2) {
                       $format_descs .= '"<i>'.$desc.'</i>", ';
                   } elsif ($i==$numwithformat-2) {
                       $format_descs .= '"<i>'.$desc.'</i>" '.&mt('and').' ';
                   } elsif ($i==$numwithformat-1) {
                       $format_descs .= '"<i>'.$desc.'</i>"';
                   }
               }
               my $showpct = sprintf("%.0f",$max_match_pct).'%';
               $output .= '<br />';
               if ($found_match_count == $max_match_count) {
                   # 100% matching entries
                   $output .= &Apache::lonhtmlcommon::confirm_success(
                        &mt('Comparison of student IDs: [_1] matching ([quant,_2,entry,entries])',
                               '<b>'.$showpct.'</b>',$found_match_count)).'<br />'.
                   &mt('Comparison of student IDs in the uploaded file with'.
                       ' the course roster found matches for [_1] of the [_2] entries'.
                       ' in the file (for the format defined for [_3]).',
                           '<b>'.$showpct.'</b>','<b>'.$max_match_count.'</b>',$format_descs);
               } else {
                   # Not all entries matching? -> Show warning and additional info
                   $output .=
                       &Apache::lonhtmlcommon::confirm_success(
                           &mt('Comparison of student IDs: [_1] matching ([_2]/[quant,_3,entry,entries])',
                                   '<b>'.$showpct.'</b>',$found_match_count,$max_match_count).'<br />'.
                           &mt('Not all entries could be matched!'),1).'<br />'.
                       &mt('Comparison of student IDs in the uploaded file with'.
                           ' the course roster found matches for [_1] of the [_2] entries'.
                           ' in the file (for the format defined for [_3]).',
                               '<b>'.$showpct.'</b>','<b>'.$max_match_count.'</b>',$format_descs).
                       '<p class="LC_info">'.
                       &mt('A low percentage of matches results from one of the following:').
                       '</p><ul>'.
                       '<li>'.&mt('The file was uploaded to the wrong course.').'</li>'.
                       '<li>'.&mt('The data is not in the format expected for the domain: [_1]',
                                  '<i>'.$cdom.'</i>').'</li>'.
                       '<li>'.&mt('Students did not bubble their IDs, or mis-bubbled them').'</li>'.
                       '<li>'.&mt('The course roster is not up to date.').'</li>'.
                       '</ul>';
               }
               if (($checksec ne '') && (ref($counts{$max_match_format}) eq 'HASH')) {
                   if ($counts{$max_match_format}{'othersec'}) {
                       my $percent_nongrade = (100*$counts{$max_match_format}{'othersec'})/($counts{$max_match_format}{'totalanysec'});
                       my $showpct = sprintf("%.0f",$percent_nongrade).'%';
                       my $confirmdel = &mt('Are you sure you want to permanently delete this file?');
                       &js_escape(\$confirmdel);
                       $output .= '<p class="LC_warning">'.
                                  &mt('Comparison of student IDs in the uploaded file with the course roster found [_1][quant,_2,match,matches][_3] for students in section(s) for which none of your role(s) have privileges to modify grades',
                                      '<b>',$counts{$max_match_format}{'othersec'},'</b>').
                                  '<br />'.
                                  &mt('Unless you are assigned role(s) which allow modification of grades in additional sections, [_1] of the records in this file will be automatically excluded when you perform bubblesheet grading.','<b>'.$showpct.'</b>').
                                  '</p><p>'.
                                  &mt('If you prefer to delete the file now, use: [_1]').
                                  '<form method="post" name="delupload" action="/adm/grades">'.
                                  '<input type="hidden" name="symb" value="'.$symb.'" />'.
                                  '<input type="hidden" name="domainid" value="'.$cdom.'" />'.
                                  '<input type="hidden" name="courseid" value="'.$cname.'" />'.
                                  '<input type="hidden" name="coursesec" value="'.$env{'request.course.sec'}.'" />'. 
                                  '<input type="hidden" name="uploadedfile" value="'.$fname.'" />'. 
                                  '<input type="hidden" name="command" value="scantronupload_delete" />'.
                                  '<input type="button" name="delbutton" value="'.&mt('Delete Uploaded File').'" onclick="javascript:if (confirm('."'$confirmdel'".')) { document.delupload.submit(); }" />'.
                                  '</form></p>';
                   }
               }
           }
           if (($context eq 'download') && ($checksec ne '')) {
               if ((ref($countsref) eq 'HASH') && (ref($counts{$max_match_format}) eq 'HASH')) {
                   $countsref->{'totalanysec'} = $counts{$max_match_format}{'totalanysec'};
                   $countsref->{'othersec'} = $counts{$max_match_format}{'othersec'};
               }
           } 
       } elsif ($context ne 'download') {
           $output = '<p class="LC_warning">'.&mt('Uploaded file contained no data').'</p>';
       }
       return $output;
   }
   
   sub gradable_sections {
       my $checksec = $env{'request.course.sec'};
       my @oksecs;
       if ($checksec) {
           my %availablesecs = &sections_grade_privs();
           if (ref($availablesecs{'mgr'}) eq 'ARRAY') {
               foreach my $sec (@{$availablesecs{'mgr'}}) {
                   unless (grep(/^\Q$sec\E$/,@oksecs)) {
                       push(@oksecs,$sec);
                   }
               }
               if (grep(/^all$/,@oksecs)) {
                   undef($checksec);
               }
           }
       }
       return($checksec,@oksecs);
   }
   
   sub sections_grade_privs {
       my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
       my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
       my %availablesecs = (
                             mgr => [],
                             vgr => [],
                             usc => [],
                           );
       my $ccrole = 'cc';
       if ($env{'course.'.$env{'request.course.id'}.'.type'} eq 'Community') {
           $ccrole = 'co';
       }
       my %crsroleshash = &Apache::lonnet::get_my_roles($env{'user.name'},$env{'user.domain'},
                                                        'userroles',['active'],
                                                        [$ccrole,'in','cr'],$cdom,1);
       my $crsid = $cnum.':'.$cdom;
       foreach my $item (keys(%crsroleshash)) {
           next unless ($item =~ /^$crsid\:/);
           my ($crsnum,$crsdom,$role,$sec) = split(/\:/,$item);
           my $suffix = "/$cdom/$cnum./$cdom/$cnum";
           if ($sec ne '') {
               $suffix = "/$cdom/$cnum/$sec./$cdom/$cnum/$sec";
           }
           if (($role eq $ccrole) || ($role eq 'in')) {
               foreach my $priv ('mgr','vgr','usc') { 
                   unless (grep(/^all$/,@{$availablesecs{$priv}})) {
                       if ($sec eq '') {
                           $availablesecs{$priv} = ['all'];
                       } elsif ($sec ne $env{'request.course.sec'}) {
                           unless (grep(/^\Q$sec\E$/,@{$availablesecs{$priv}})) {
                               push(@{$availablesecs{$priv}},$sec);
                           }
                       }
                   }
               }
           } elsif ($role =~ m{^cr/}) {
               foreach my $priv ('mgr','vgr','usc') {
                   unless (grep(/^all$/,@{$availablesecs{$priv}})) {
                       if ($env{"user.priv.$role.$suffix"} =~ /:$priv&/) {
                           if ($sec eq '') {
                               $availablesecs{$priv} = ['all'];
                           } elsif ($sec ne $env{'request.course.sec'}) {
                               unless (grep(/^\Q$sec\E$/,@{$availablesecs{$priv}})) {
                                   push(@{$availablesecs{$priv}},$sec);
                               }
                           }
                       }
                   }
               }
           }
       }
       return %availablesecs;
   }
   
   sub scantron_upload_delete {
       my ($r,$symb) = @_;
       my $filename = $env{'form.uploadedfile'};
       if ($filename =~ /^scantron_orig_/) {
           if (&Apache::lonnet::allowed('usc',$env{'form.domainid'}) ||
               &Apache::lonnet::allowed('usc',
                                        $env{'form.domainid'}.'_'.$env{'form.courseid'}) ||
               &Apache::lonnet::allowed('usc',
                                        $env{'form.domainid'}.'_'.$env{'form.courseid'}.'/'.$env{'form.coursesec'})) {
               my $uploadurl = '/uploaded/'.$env{'form.domainid'}.'/'.$env{'form.courseid'}.'/'.$env{'form.uploadedfile'};
               my $retrieval = &Apache::lonnet::getfile($uploadurl);
               if ($retrieval eq '-1') {
                   $r->print(&Apache::lonhtmlcommon::confirm_success(&mt('File deletion failed'),1).'<br />'.
                             &mt('File requested for deletion not found.'));
               } else {
                   $filename =~ s/^scantron_orig_//;
                   if ($filename ne '') {
                       my ($is_valid,$numleft);
                       my %info = &Apache::lonnet::get('scantronupload',[$filename],$env{'form.domainid'},$env{'form.courseid'});
                       if (keys(%info)) {
                           if (ref($info{$filename}) eq 'HASH') {
                               foreach my $timestamp (sort(keys(%{$info{$filename}}))) {
                                   if ($info{$filename}{$timestamp} eq $env{'user.name'}.':'.$env{'user.domain'}) {
                                       $is_valid = 1;
                                       delete($info{$filename}{$timestamp}); 
                                   }
                               }
                               $numleft = scalar(keys(%{$info{$filename}}));
                           }
                       }
                       if ($is_valid) {
                           my $result = &Apache::lonnet::removeuploadedurl($uploadurl);
                           if ($result eq 'ok') {
                               $r->print(&Apache::lonhtmlcommon::confirm_success(&mt('File deletion successful')).'<br />');
                               if ($numleft) {
                                   &Apache::lonnet::put('scantronupload',\%info,$env{'form.domainid'},$env{'form.courseid'});
                               } else {
                                   &Apache::lonnet::del('scantronupload',[$filename],$env{'form.domainid'},$env{'form.courseid'});
                               }
                           } else {
                               $r->print(&Apache::lonhtmlcommon::confirm_success(&mt('File deletion failed'),1).'<br />'.
                                         &mt('Result was [_1]',$result));
                           }
                       } else {
                           $r->print(&Apache::lonhtmlcommon::confirm_success(&mt('File deletion failed'),1).'<br />'.
                                     &mt('File requested for deletion was uploaded by a different user.'));
                       }
                   } else {
                       $r->print(&Apache::lonhtmlcommon::confirm_success(&mt('File deletion failed'),1).'<br />'.
                                 &mt('Filename of bubblesheet data file requested for deletion is invalid.'));
                   }
               }
           } else {
               $r->print(&Apache::lonhtmlcommon::confirm_success(&mt('File deletion failed'),1).'<br />'. 
                         &mt('You are not permitted to delete bubblesheet data files from the requested course.'));
           }
       } else {
           $r->print(&Apache::lonhtmlcommon::confirm_success(&mt('File deletion failed'),1).'<br />'.
                             &mt('Filename of bubblesheet data file requested for deletion is invalid.'));
       }
       return;
   }
   
   sub valid_file {
       my ($requested_file)=@_;
       foreach my $filename (sort(&scantron_filenames())) {
    if ($requested_file eq $filename) { return 1; }
       }
       return 0;
   }
   
   sub scantron_download_scantron_data {
       my ($r,$symb) = @_;
       my $default_form_data=&defaultFormData($symb);
       my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
       my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
       my $file=$env{'form.scantron_selectfile'};
       if (! &valid_file($file)) {
    $r->print('
    <p>
       '.&mt('The requested filename was invalid.').'
           </p>
   ');
    return;
       }
       my (%uploader,$is_owner,%counts,$percent);
       my %uploader = &Apache::lonnet::get('scantronupload',[$file],$cdom,$cname);
       if (ref($uploader{$file}) eq 'HASH') {
           foreach my $timestamp (sort { $a <=> $b } keys(%{$uploader{$file}})) {
               if ($uploader{$file}{$timestamp} eq $env{'user.name'}.':'.$env{'user.domain'}) {
                   $is_owner = 1;
                   last;
               }
           }
       }
       unless ($is_owner) {
           &validate_uploaded_scantron_file($cdom,$cname,$symb,'scantron_orig_'.$file,'download',\%counts);
           if ($counts{'totalanysec'}) {
               my $percent_othersec = (100*$counts{'othersec'})/($counts{'totalanysec'});
               if ($percent_othersec >= 10) {
                   my $showpct = sprintf("%.0f",$percent_othersec).'%';
                   $r->print('<p class="LC_warning">'.
                             &mt('The original uploaded file includes [_1] or more of records for students for which none of your roles have rights to modify grades, so files are unavailable for download.',$showpct).
                             '</p>');
                   return;
               }
           }
       }
       my $orig='/uploaded/'.$cdom.'/'.$cname.'/scantron_orig_'.$file;
       my $corrected='/uploaded/'.$cdom.'/'.$cname.'/scantron_corrected_'.$file;
       my $skipped='/uploaded/'.$cdom.'/'.$cname.'/scantron_skipped_'.$file;
       &Apache::lonnet::allowuploaded('/adm/grades',$orig);
       &Apache::lonnet::allowuploaded('/adm/grades',$corrected);
       &Apache::lonnet::allowuploaded('/adm/grades',$skipped);
       $r->print('
       <p>
    '.&mt('[_1]Original[_2] file as uploaded by the bubblesheet scanning office.',
         '<a href="'.$orig.'">','</a>').'
       </p>
       <p>
    '.&mt('[_1]Corrections[_2], a file of corrected records that were used in grading.',
         '<a href="'.$corrected.'">','</a>').'
       </p>
       <p>
    '.&mt('[_1]Skipped[_2], a file of records that were skipped.',
         '<a href="'.$skipped.'">','</a>').'
       </p>
   ');
       return '';
   }
   
   sub checkscantron_results {
       my ($r,$symb) = @_;
       if (!$symb) {return '';}
       my $cid = $env{'request.course.id'};
       my %lettdig = &Apache::lonnet::letter_to_digits();
       my $numletts = scalar(keys(%lettdig));
       my $cnum = $env{'course.'.$cid.'.num'};
       my $cdom = $env{'course.'.$cid.'.domain'};
       my (undef, undef, $sequence) = &Apache::lonnet::decode_symb($env{'form.selectpage'});
       my %record;
       my %scantron_config =
           &Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
       my $bubbles_per_row = &bubblesheet_bubbles_per_row(\%scantron_config);
       my ($scanlines,$scan_data)=&scantron_getfile();
       my $classlist=&Apache::loncoursedata::get_classlist();
       my %idmap=&Apache::grades::username_to_idmap($classlist);
       my $navmap=Apache::lonnavmaps::navmap->new();
       unless (ref($navmap)) {
           $r->print(&navmap_errormsg());
           return '';
       }
       my $map=$navmap->getResourceByUrl($sequence);
       my ($randomorder,$randompick,@master_seq,%symb_to_resource,%grader_partids_by_symb,
           %grader_randomlists_by_symb,%orderedforcode);
       if (ref($map)) { 
           $randomorder=$map->randomorder();
           $randompick=$map->randompick();
       }
       my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
       my $nav_error = &get_master_seq(\@resources,\@master_seq,\%symb_to_resource);
       if ($nav_error) {
           $r->print(&navmap_errormsg());
           return '';
       }
       &graders_resources_pass(\@resources,\%grader_partids_by_symb,
                               \%grader_randomlists_by_symb,$bubbles_per_row);
       my ($uname,$udom);
       my (%scandata,%lastname,%bylast);
       $r->print('
   <form method="post" enctype="multipart/form-data" action="/adm/grades" name="checkscantron">'."\n");
   
       my @delayqueue;
       my %completedstudents;
   
       my $count=&get_todo_count($scanlines,$scan_data);
       my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,$count);
       my ($username,$domain,$started);
       &scantron_get_maxbubble(\$nav_error,\%scantron_config); # Need the bubble lines array to parse.
       if ($nav_error) {
           $r->print(&navmap_errormsg());
           return '';
       }
   
       &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,'Processing first student');
       my $start=&Time::HiRes::time();
       my $i=-1;
   
       while ($i<$scanlines->{'count'}) {
           ($username,$domain,$uname)=('','','');
           $i++;
           my $line=&Apache::grades::scantron_get_line($scanlines,$scan_data,$i);
           if ($line=~/^[\s\cz]*$/) { next; }
           if ($started) {
               &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
           }
           $started=1;
           my $scan_record=
               &Apache::grades::scantron_parse_scanline($line,$i,\%scantron_config,
                                                        $scan_data);
           unless ($uname=&scantron_find_student($scan_record,$scan_data,
                                                 \%idmap,$i)) {
               &Apache::grades::scantron_add_delay(\@delayqueue,$line,
                                   'Unable to find a student that matches',1);
               next;
           }
           if (exists $completedstudents{$uname}) {
               &Apache::grades::scantron_add_delay(\@delayqueue,$line,
                                   'Student '.$uname.' has multiple sheets',2);
               next;
           }
           my $pid = $scan_record->{'scantron.ID'};
           $lastname{$pid} = $scan_record->{'scantron.LastName'};
           push(@{$bylast{$lastname{$pid}}},$pid);
           my $usec = $classlist->{$uname}->[&Apache::loncoursedata::CL_SECTION];
           my $user = $uname.':'.$usec;
           ($username,$domain)=split(/:/,$uname);
   
           my $scancode;
           if ((exists($scan_record->{'scantron.CODE'})) &&
               (&Apache::lonnet::validCODE($scan_record->{'scantron.CODE'}))) {
               $scancode = $scan_record->{'scantron.CODE'};
           } else {
               $scancode = '';
           }
   
           my @mapresources = @resources;
           my $lastpos = $env{'form.scantron_maxbubble'}*$scantron_config{'Qlength'};
           my %respnumlookup=();
           my %startline=();
           if ($randomorder || $randompick) {
               @mapresources =
                   &users_order($user,$scancode,$sequence,\@master_seq,\%symb_to_resource,
                                \%orderedforcode);
               my $total = &get_respnum_lookups($sequence,$scan_data,\%idmap,$line,
                                                $scan_record,\@master_seq,\%symb_to_resource,
                                                \%grader_partids_by_symb,\%orderedforcode,
                                                \%respnumlookup,\%startline);
               if ($randompick && $total) {
                   $lastpos = $total*$scantron_config{'Qlength'};
               }
           }
           $scandata{$pid} = substr($line,$scantron_config{'Qstart'}-1,$lastpos);
           chomp($scandata{$pid});
           $scandata{$pid} =~ s/\r$//;
   
           my $counter = -1;
           foreach my $resource (@mapresources) {
               my $parts;
               my $ressymb = $resource->symb();
               if ((exists($grader_randomlists_by_symb{$ressymb})) ||
                   (ref($grader_partids_by_symb{$ressymb}) ne 'ARRAY')) {
                   my $currcode;
                   if (exists($grader_randomlists_by_symb{$ressymb})) {
                       $currcode = $scancode;
                   }
                   (my $analysis,$parts) =
                       &scantron_partids_tograde($resource,$env{'request.course.id'},
                                                 $username,$domain,undef,
                                                 $bubbles_per_row,$currcode);
               } else {
                   $parts = $grader_partids_by_symb{$ressymb};
               }
               ($counter,my $recording) =
                   &verify_scantron_grading($resource,$domain,$username,$cid,$counter,
                                            $scandata{$pid},$parts,
                                            \%scantron_config,\%lettdig,$numletts,
                                            $randomorder,$randompick,
                                            \%respnumlookup,\%startline);
               $record{$pid} .= $recording;
           }
       }
       &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
       $r->print('<br />');
       my ($okstudents,$badstudents,$numstudents,$passed,$failed);
       $passed = 0;
       $failed = 0;
       $numstudents = 0;
       foreach my $last (sort(keys(%bylast))) {
           if (ref($bylast{$last}) eq 'ARRAY') {
               foreach my $pid (sort(@{$bylast{$last}})) {
                   my $showscandata = $scandata{$pid};
                   my $showrecord = $record{$pid};
                   $showscandata =~ s/\s/&nbsp;/g;
                   $showrecord =~ s/\s/&nbsp;/g;
                   if ($scandata{$pid} eq $record{$pid}) {
                       my $css_class = ($passed % 2)?'LC_odd_row':'LC_even_row';
                       $okstudents .= '<tr class="'.$css_class.'">'.
   '<td>'.&mt('Bubblesheet').'</td><td>'.$showscandata.'</td><td rowspan="2">'.$last.'</td><td rowspan="2">'.$pid.'</td>'."\n".
   '</tr>'."\n".
   '<tr class="'.$css_class.'">'."\n".
   '<td>'.&mt('Submissions').'</td><td>'.$showrecord.'</td></tr>'."\n";
                       $passed ++;
                   } else {
                       my $css_class = ($failed % 2)?'LC_odd_row':'LC_even_row';
                       $badstudents .= '<tr class="'.$css_class.'"><td>'.&mt('Bubblesheet').'</td><td><span class="LC_nobreak">'.$scandata{$pid}.'</span></td><td rowspan="2">'.$last.'</td><td rowspan="2">'.$pid.'</td>'."\n".
   '</tr>'."\n".
   '<tr class="'.$css_class.'">'."\n".
   '<td>'.&mt('Submissions').'</td><td><span class="LC_nobreak">'.$record{$pid}.'</span></td>'."\n".
   '</tr>'."\n";
                       $failed ++;
                   }
                   $numstudents ++;
               }
           }
       }
       $r->print(
           '<p>'
          .&mt('Comparison of bubblesheet data (including corrections) with corresponding submission records (most recent submission) for [_1][quant,_2,student][_3] ([quant,_4,bubblesheet line] per student).',
               '<b>',
               $numstudents,
               '</b>',
               $env{'form.scantron_maxbubble'})
          .'</p>'
       );
       $r->print('<p>'
                .&mt('Exact matches for [_1][quant,_2,student][_3].','<b>',$passed,'</b>')
                .'<br />'
                .&mt('Discrepancies detected for [_1][quant,_2,student][_3].','<b>',$failed,'</b>')
                .'</p>'
       );
       if ($passed) {
           $r->print(&mt('Students with exact correspondence between bubblesheet data and submissions are as follows:').'<br /><br />');
           $r->print(&Apache::loncommon::start_data_table()."\n".
                    &Apache::loncommon::start_data_table_header_row()."\n".
                    '<th>'.&mt('Source').'</th><th>'.&mt('Bubble records').'</th><th>'.&mt('Name').'</th><th>'.&mt('ID').'</th>'.
                    &Apache::loncommon::end_data_table_header_row()."\n".
                    $okstudents."\n".
                    &Apache::loncommon::end_data_table().'<br />');
       }
       if ($failed) {
           $r->print(&mt('Students with differences between bubblesheet data and submissions are as follows:').'<br /><br />');
           $r->print(&Apache::loncommon::start_data_table()."\n".
                    &Apache::loncommon::start_data_table_header_row()."\n".
                    '<th>'.&mt('Source').'</th><th>'.&mt('Bubble records').'</th><th>'.&mt('Name').'</th><th>'.&mt('ID').'</th>'.
                    &Apache::loncommon::end_data_table_header_row()."\n".
                    $badstudents."\n".
                    &Apache::loncommon::end_data_table()).'<br />'.
                    &mt('Differences can occur if submissions were modified using manual grading after a bubblesheet grading pass.').'<br />'.&mt('If unexpected discrepancies were detected, it is recommended that you inspect the original bubblesheets.');  
       }
       $r->print('</form><br />');
       return;
   }
   
   sub verify_scantron_grading {
       my ($resource,$domain,$username,$cid,$counter,$scandata,$partids,
           $scantron_config,$lettdig,$numletts,$randomorder,$randompick,
           $respnumlookup,$startline) = @_;
       my ($record,%expected,%startpos);
       return ($counter,$record) if (!ref($resource));
       return ($counter,$record) if (!$resource->is_problem());
       my $symb = $resource->symb();
       return ($counter,$record) if (ref($partids) ne 'ARRAY');
       foreach my $part_id (@{$partids}) {
           $counter ++;
           $expected{$part_id} = 0;
           my $respnum = $counter;
           if ($randomorder || $randompick) {
               $respnum = $respnumlookup->{$counter};
               $startpos{$part_id} = $startline->{$counter} + 1;
           } else {
               $startpos{$part_id} = $env{"form.scantron.first_bubble_line.$counter"};
           }
           if ($env{"form.scantron.sub_bubblelines.$respnum"}) {
               my @sub_lines = split(/,/,$env{"form.scantron.sub_bubblelines.$respnum"});
               foreach my $item (@sub_lines) {
                   $expected{$part_id} += $item;
               }
           } else {
               $expected{$part_id} = $env{"form.scantron.bubblelines.$respnum"};
           }
       }
       if ($symb) {
           my %recorded;
           my (%returnhash) = &Apache::lonnet::restore($symb,$cid,$domain,$username);
           if ($returnhash{'version'}) {
               my %lasthash=();
               my $version;
               for ($version=1;$version<=$returnhash{'version'};$version++) {
                   foreach my $key (sort(split(/\:/,$returnhash{$version.':keys'}))) {
                       $lasthash{$key}=$returnhash{$version.':'.$key};
                   }
               }
               foreach my $key (keys(%lasthash)) {
                   if ($key =~ /\.scantron$/) {
                       my $value = &unescape($lasthash{$key});
                       my ($part_id) = ($key =~ /^resource\.(.+)\.scantron$/);
                       if ($value eq '') {
                           for (my $i=0; $i<$expected{$part_id}; $i++) {
                               for (my $j=0; $j<$scantron_config->{'length'}; $j++) {
                                   $recorded{$part_id} .= $scantron_config->{'Qoff'};
                               }
                           }
                       } else {
                           my @tocheck;
                           my @items = split(//,$value);
                           if (($scantron_config->{'Qon'} eq 'letter') ||
                               ($scantron_config->{'Qon'} eq 'number')) {
                               if (@items < $expected{$part_id}) {
                                   my $fragment = substr($scandata,$startpos{$part_id},$expected{$part_id});
                                   my @singles = split(//,$fragment);
                                   foreach my $pos (@singles) {
                                       if ($pos eq ' ') {
                                           push(@tocheck,$pos);
                                       } else {
                                           my $next = shift(@items);
                                           push(@tocheck,$next);
                                       }
                                   }
                               } else {
                                   @tocheck = @items;
                               }
                               foreach my $letter (@tocheck) {
                                   if ($scantron_config->{'Qon'} eq 'letter') {
                                       if ($letter !~ /^[A-J]$/) {
                                           $letter = $scantron_config->{'Qoff'};
                                       }
                                       $recorded{$part_id} .= $letter;
                                   } elsif ($scantron_config->{'Qon'} eq 'number') {
                                       my $digit;
                                       if ($letter !~ /^[A-J]$/) {
                                           $digit = $scantron_config->{'Qoff'};
                                       } else {
                                           $digit = $lettdig->{$letter};
                                       }
                                       $recorded{$part_id} .= $digit;
                                   }
                               }
                           } else {
                               @tocheck = @items;
                               for (my $i=0; $i<$expected{$part_id}; $i++) {
                                   my $curr_sub = shift(@tocheck);
                                   my $digit;
                                   if ($curr_sub =~ /^[A-J]$/) {
                                       $digit = $lettdig->{$curr_sub}-1;
                                   }
                                   if ($curr_sub eq 'J') {
                                       $digit += scalar($numletts);
                                   }
                                   for (my $j=0; $j<$scantron_config->{'Qlength'}; $j++) {
                                       if ($j == $digit) {
                                           $recorded{$part_id} .= $scantron_config->{'Qon'};
                                       } else {
                                           $recorded{$part_id} .= $scantron_config->{'Qoff'};
                                       }
                                   }
                               }
                           }
                       }
                   }
               }
           }
           foreach my $part_id (@{$partids}) {
               if ($recorded{$part_id} eq '') {
                   for (my $i=0; $i<$expected{$part_id}; $i++) {
                       for (my $j=0; $j<$scantron_config->{'Qlength'}; $j++) {
                           $recorded{$part_id} .= $scantron_config->{'Qoff'};
                       }
                   }
               }
               $record .= $recorded{$part_id};
           }
       }
       return ($counter,$record);
   }
   
   #-------- end of section for handling grading scantron forms -------
   #
   #-------------------------------------------------------------------
   
   #-------------------------- Menu interface -------------------------
   #
   #--- Href with symb and command ---
   
   sub href_symb_cmd {
       my ($symb,$cmd)=@_;
       return '/adm/grades?symb='.&HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb),'<>&"').'&amp;command='.$cmd;
   }
   
   sub grading_menu {
       my ($request,$symb) = @_;
       if (!$symb) {return '';}
   
       my %fields = ('symb'=>&Apache::lonenc::check_encrypt($symb),
                     'command'=>'individual');
       
       my $url1a = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
   
       $fields{'command'}='ungraded';
       my $url1b=&Apache::lonhtmlcommon::build_url('grades/',\%fields);
   
       $fields{'command'}='table';
       my $url1c=&Apache::lonhtmlcommon::build_url('grades/',\%fields);
   
       $fields{'command'}='all_for_one';
       my $url1d=&Apache::lonhtmlcommon::build_url('grades/',\%fields);
   
       $fields{'command'}='downloadfilesselect';
       my $url1e=&Apache::lonhtmlcommon::build_url('grades/',\%fields);
   
       $fields{'command'} = 'csvform';
       my $url2 = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
       
       $fields{'command'} = 'processclicker';
       my $url3 = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
       
       $fields{'command'} = 'scantron_selectphase';
       my $url4 = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
   
       $fields{'command'} = 'initialverifyreceipt';
       my $url5 = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
   
       my %permissions;
       if ($perm{'mgr'}) {
           $permissions{'either'} = 'F';
           $permissions{'mgr'} = 'F';
       }
       if ($perm{'vgr'}) {
           $permissions{'either'} = 'F';
           $permissions{'vgr'} = 'F';
       }
   
       my @menu = ({ categorytitle=>'Hand Grading',
               items =>[
                           { linktext => 'Select individual students to grade',
                       url => $url1a,
                       permission => $permissions{'either'},
                       icon => 'grade_students.png',
                       linktitle => 'Grade current resource for a selection of students.'
                           }, 
                           {       linktext => 'Grade ungraded submissions',
                                   url => $url1b,
                                   permission => $permissions{'either'},
                                   icon => 'ungrade_sub.png',
                                   linktitle => 'Grade all submissions that have not been graded yet.'
                           },
   
                           {       linktext => 'Grading table',
                                   url => $url1c,
                                   permission => $permissions{'either'},
                                   icon => 'grading_table.png',
                                   linktitle => 'Grade current resource for all students.'
                           },
                           {       linktext => 'Grade page/folder for one student',
                                   url => $url1d,
                                   permission => $permissions{'either'},
                                   icon => 'grade_PageFolder.png',
                                   linktitle => 'Grade all resources in current page/sequence/folder for one student.'
                           },
                           {       linktext => 'Download submissions',
                                   url => $url1e,
                                   permission => $permissions{'either'},
                                   icon => 'download_sub.png',
                                   linktitle => 'Download all students submissions.'
                           }]},
                            { categorytitle=>'Automated Grading',
                  items =>[
   
                      { linktext => 'Upload Scores',
                       url => $url2,
                       permission => $permissions{'mgr'},
                       icon => 'uploadscores.png',
                       linktitle => 'Specify a file containing the class scores for current resource.'
                      },
                      { linktext => 'Process Clicker',
                       url => $url3,
                       permission => $permissions{'mgr'},
                       icon => 'addClickerInfoFile.png',
                       linktitle => 'Specify a file containing the clicker information for this resource.'
                      },
                      { linktext => 'Grade/Manage/Review Bubblesheets',
                       url => $url4,
                       permission => $permissions{'mgr'},
                       icon => 'bubblesheet.png',
                       linktitle => 'Grade bubblesheet exams, upload/download bubblesheet data files, and review previously graded bubblesheet exams.'
                      },
                               {   linktext => 'Verify Receipt Number',
                                   url => $url5,
                                   permission => $permissions{'either'},
                                   icon => 'receipt_number.png',
                                   linktitle => 'Verify a system-generated receipt number for correct problem solution.'
                               }
   
                       ]
               });
   
       # Create the menu
       my $Str;
       $Str .= '<form method="post" action="" name="gradingMenu">';
       $Str .= '<input type="hidden" name="command" value="" />'.
       '<input type="hidden" name="symb"        value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n";
   
       $Str .= &Apache::lonhtmlcommon::generate_menu(@menu);
       return $Str;    
   }
   
   sub ungraded {
       my ($request)=@_;
       &submit_options($request);
   }
   
   sub submit_options_sequence {
       my ($request,$symb) = @_;
       if (!$symb) {return '';}
       &commonJSfunctions($request);
       my $result;
   
       $result.='<form action="/adm/grades" method="post" name="gradingMenu">'."\n".
           '<input type="hidden" name="symb"        value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n";
       $result.=&selectfield(0).
               '<input type="hidden" name="command" value="pickStudentPage" />
               <div>
                 <input type="submit" value="'.&mt('Next').' &rarr;" />
               </div>
           </div>
     </form>';
       return $result;
   }
   
   sub submit_options_table {
       my ($request,$symb) = @_;
       if (!$symb) {return '';}
       &commonJSfunctions($request);
       my $is_tool = ($symb =~ /ext\.tool$/);
       my $result;
   
       $result.='<form action="/adm/grades" method="post" name="gradingMenu">'."\n".
           '<input type="hidden" name="symb"        value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n";
   
       $result.=&selectfield(1,$is_tool).
               '<input type="hidden" name="command" value="viewgrades" />
               <div>
                 <input type="submit" value="'.&mt('Next').' &rarr;" />
               </div>
           </div>
     </form>';
       return $result;
   }
   
   sub submit_options_download {
       my ($request,$symb) = @_;
       if (!$symb) {return '';}
   
       my $res_error;
       my ($partlist,$handgrade,$responseType,$numresp,$numessay,$numdropbox) =
           &response_type($symb,\$res_error);
       if ($res_error) {
           $request->print(&mt('An error occurred retrieving response types'));
           return;
       }
       unless ($numessay) {
           $request->print(&mt('No essayresponse items found'));
           return;
       }
       my $table;
       if (ref($partlist) eq 'ARRAY') {
           if (scalar(@$partlist) > 1 ) {
               $table = &showResourceInfo($symb,$partlist,$responseType,'gradingMenu',1,1);
           }
       }
   
       my $is_tool = ($symb =~ /ext\.tool$/);
       &commonJSfunctions($request);
   
       my $result='<form action="/adm/grades" method="post" name="gradingMenu">'."\n".
                  $table."\n".
                  '<input type="hidden" name="symb" value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n";
       $result.='
   <h2>
     '.&mt('Select Students for whom to Download Submissions').'
   </h2>'.&selectfield(1,$is_tool).'
                   <input type="hidden" name="command" value="downloadfileslink" /> 
                 <input type="submit" value="'.&mt('Next').' &rarr;" />
               </div>
             </div>
   
   
     </form>';
       return $result;
   }
   
   #--- Displays the submissions first page -------
   sub submit_options {
       my ($request,$symb) = @_;
       if (!$symb) {return '';}
   
       my $is_tool = ($symb =~ /ext\.tool$/);
       &commonJSfunctions($request);
       my $result;
   
       $result.='<form action="/adm/grades" method="post" name="gradingMenu">'."\n".
    '<input type="hidden" name="symb"        value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n";
       $result.=&selectfield(1,$is_tool).'
                   <input type="hidden" name="command" value="submission" /> 
         <input type="submit" value="'.&mt('Next').' &rarr;" />
               </div>
             </div>
     </form>';
       return $result;
   }
   
   sub selectfield {
      my ($full,$is_tool)=@_;
      my %options;
      if ($is_tool) {
          %options =
              (&transtatus_options,
               'select_form_order' => ['yes','incorrect','all']);
      } else {
          %options = 
              (&substatus_options,
               'select_form_order' => ['yes','queued','graded','incorrect','all']);
      }
   
     #
     # PrepareClasslist() needs to be called to avoid getting a sections list
     # for a different course from the @Sections global in lonstatistics.pm, 
     # populated by an earlier request.
     #
      &Apache::lonstatistics::PrepareClasslist();
   
      my $result='<div class="LC_columnSection">
     
       <fieldset>
         <legend>
          '.&mt('Sections').'
         </legend>
         '.&Apache::lonstatistics::SectionSelect('section','multiple',5).'
       </fieldset>
     
       <fieldset>
         <legend>
           '.&mt('Groups').'
         </legend>
         '.&Apache::lonstatistics::GroupSelect('group','multiple',5).'
       </fieldset>
     
       <fieldset>
         <legend>
           '.&mt('Access Status').'
         </legend>
         '.&Apache::lonhtmlcommon::StatusOptions(undef,undef,5,undef,'mult').'
       </fieldset>';
       if ($full) {
           my $heading = &mt('Submission Status');
           if ($is_tool) {
               $heading = &mt('Transaction Status');
           }
           $result.='
       <fieldset>
         <legend>
           '.$heading.'
         </legend>'.
          &Apache::loncommon::select_form('all','submitonly',\%options).
      '</fieldset>';
       }
       $result.='</div><br />';
       return $result;
   }
   
   sub substatus_options {
       return &Apache::lonlocal::texthash(
                                         'yes'       => 'with submissions',
                                         'queued'    => 'in grading queue',
                                         'graded'    => 'with ungraded submissions',
                                         'incorrect' => 'with incorrect submissions',
                                         'all'       => 'with any status',
                                         );
   }
   
   sub transtatus_options {
       return &Apache::lonlocal::texthash(
                                          'yes'       => 'with score transactions',
                                          'incorrect' => 'with less than full credit',
                                          'all'       => 'with any status',
                                         );
   }
   
   sub reset_perm {
       undef(%perm);
   }
   
   sub init_perm {
       &reset_perm();
       foreach my $test_perm ('vgr','mgr','opa','usc') {
   
    my $scope = $env{'request.course.id'};
    if (!($perm{$test_perm}=&Apache::lonnet::allowed($test_perm,$scope))) {
   
       $scope .= '/'.$env{'request.course.sec'};
       if ( $perm{$test_perm}=
    &Apache::lonnet::allowed($test_perm,$scope)) {
    $perm{$test_perm.'_section'}=$env{'request.course.sec'};
     } else {      } else {
  if ( $ENV{'form.upfile_associate'} ne 'reverse' ) {   delete($perm{$test_perm});
     $ENV{'form.upfile_associate'} = 'reverse';      }
    }
       }
   }
   
   sub init_old_essays {
       my ($symb,$apath,$adom,$aname) = @_;
       if ($symb ne '') {
           my %essays = &Apache::lonnet::dump('nohist_essay_'.$apath,$adom,$aname);
           if (keys(%essays) > 0) {
               $old_essays{$symb} = \%essays;
           }
       }
       return;
   }
   
   sub reset_old_essays {
       undef(%old_essays);
   }
   
   sub gather_clicker_ids {
       my %clicker_ids;
   
       my $classlist = &Apache::loncoursedata::get_classlist();
   
       # Set up a couple variables.
       my $username_idx = &Apache::loncoursedata::CL_SNAME();
       my $domain_idx   = &Apache::loncoursedata::CL_SDOM();
       my $status_idx   = &Apache::loncoursedata::CL_STATUS();
   
       foreach my $student (keys(%$classlist)) {
           if ($classlist->{$student}->[$status_idx] ne 'Active') { next; }
           my $username = $classlist->{$student}->[$username_idx];
           my $domain   = $classlist->{$student}->[$domain_idx];
           my $clickers =
       (&Apache::lonnet::userenvironment($domain,$username,'clickers'))[1];
           foreach my $id (split(/\,/,$clickers)) {
               $id=~s/^[\#0]+//;
               $id=~s/[\-\:]//g;
               if (exists($clicker_ids{$id})) {
    $clicker_ids{$id}.=','.$username.':'.$domain;
               } else {
    $clicker_ids{$id}=$username.':'.$domain;
               }
           }
       }
       return %clicker_ids;
   }
   
   sub gather_adv_clicker_ids {
       my %clicker_ids;
       my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
       my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
       my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum);
       foreach my $element (sort(keys(%coursepersonnel))) {
           foreach my $person (split(/\,/,$coursepersonnel{$element})) {
               my ($puname,$pudom)=split(/\:/,$person);
               my $clickers =
    (&Apache::lonnet::userenvironment($pudom,$puname,'clickers'))[1];
               foreach my $id (split(/\,/,$clickers)) {
    $id=~s/^[\#0]+//;
                   $id=~s/[\-\:]//g;
    if (exists($clicker_ids{$id})) {
       $clicker_ids{$id}.=','.$puname.':'.$pudom;
  } else {   } else {
     $ENV{'form.upfile_associate'} = 'forward';      $clicker_ids{$id}=$puname.':'.$pudom;
  }   }
  $request->print(&csvuploadmap($request));              }
           }
       }
       return %clicker_ids;
   }
   
   sub clicker_grading_parameters {
       return ('gradingmechanism' => 'scalar',
               'upfiletype' => 'scalar',
               'specificid' => 'scalar',
               'pcorrect' => 'scalar',
               'pincorrect' => 'scalar');
   }
   
   sub process_clicker {
       my ($r,$symb)=@_;
       if (!$symb) {return '';}
       my $result=&checkforfile_js();
       $result.=&Apache::loncommon::start_data_table().
                &Apache::loncommon::start_data_table_header_row().
                '<th>'.&mt('Specify a file containing clicker information and set grading options.').'</th>'.
                &Apache::loncommon::end_data_table_header_row().
                &Apache::loncommon::start_data_table_row()."<td>\n";
   # Attempt to restore parameters from last session, set defaults if not present
       my %Saveable_Parameters=&clicker_grading_parameters();
       &Apache::loncommon::restore_course_settings('grades_clicker',
                                                    \%Saveable_Parameters);
       if (!$env{'form.pcorrect'}) { $env{'form.pcorrect'}=100; }
       if (!$env{'form.pincorrect'}) { $env{'form.pincorrect'}=100; }
       if (!$env{'form.gradingmechanism'}) { $env{'form.gradingmechanism'}='attendance'; }
       if (!$env{'form.upfiletype'}) { $env{'form.upfiletype'}='iclicker'; }
   
       my %checked;
       foreach my $gradingmechanism ('attendance','personnel','specific','given') {
          if ($env{'form.gradingmechanism'} eq $gradingmechanism) {
             $checked{$gradingmechanism}=' checked="checked"';
          }
       }
   
       my $upload=&mt("Evaluate File");
       my $type=&mt("Type");
       my $attendance=&mt("Award points just for participation");
       my $personnel=&mt("Correctness determined from response by course personnel");
       my $specific=&mt("Correctness determined from response with clicker ID(s)"); 
       my $given=&mt("Correctness determined from given list of answers").' '.
                 '<font size="-2"><tt>('.&mt("Provide comma-separated list. Use '*' for any answer correct, '-' for skip").')</tt></font>';
       my $pcorrect=&mt("Percentage points for correct solution");
       my $pincorrect=&mt("Percentage points for incorrect solution");
       my $selectform=&Apache::loncommon::select_form($env{'form.upfiletype'},'upfiletype',
      {'iclicker' => 'i>clicker',
                                                       'interwrite' => 'interwrite PRS',
                                                       'turning' => 'Turning Technologies'});
       $symb = &Apache::lonenc::check_encrypt($symb);
       $result.= &Apache::lonhtmlcommon::scripttag(<<ENDUPFORM);
   function sanitycheck() {
   // Accept only integer percentages
      document.forms.gradesupload.pcorrect.value=Math.round(document.forms.gradesupload.pcorrect.value);
      document.forms.gradesupload.pincorrect.value=Math.round(document.forms.gradesupload.pincorrect.value);
   // Find out grading choice
      for (i=0; i<document.forms.gradesupload.gradingmechanism.length; i++) {
         if (document.forms.gradesupload.gradingmechanism[i].checked) {
            gradingchoice=document.forms.gradesupload.gradingmechanism[i].value;
         }
      }
   // By default, new choice equals user selection
      newgradingchoice=gradingchoice;
   // Not good to give more points for false answers than correct ones
      if (Math.round(document.forms.gradesupload.pcorrect.value)<Math.round(document.forms.gradesupload.pincorrect.value)) {
         document.forms.gradesupload.pcorrect.value=document.forms.gradesupload.pincorrect.value;
      }
   // If new choice is attendance only, and old choice was correctness-based, restore defaults
      if ((gradingchoice=='attendance') && (document.forms.gradesupload.waschecked.value!='attendance')) {
         document.forms.gradesupload.pcorrect.value=100;
         document.forms.gradesupload.pincorrect.value=100;
      }
   // If the values are different, cannot be attendance only
      if ((Math.round(document.forms.gradesupload.pcorrect.value)!=Math.round(document.forms.gradesupload.pincorrect.value)) &&
          (gradingchoice=='attendance')) {
          newgradingchoice='personnel';
      }
   // Change grading choice to new one
      for (i=0; i<document.forms.gradesupload.gradingmechanism.length; i++) {
         if (document.forms.gradesupload.gradingmechanism[i].value==newgradingchoice) {
            document.forms.gradesupload.gradingmechanism[i].checked=true;
         } else {
            document.forms.gradesupload.gradingmechanism[i].checked=false;
         }
      }
   // Remember the old state
      document.forms.gradesupload.waschecked.value=newgradingchoice;
   }
   ENDUPFORM
       $result.= <<ENDUPFORM;
   <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
   <input type="hidden" name="symb" value="$symb" />
   <input type="hidden" name="command" value="processclickerfile" />
   <input type="file" name="upfile" size="50" />
   <br /><label>$type: $selectform</label>
   ENDUPFORM
       $result.='</td>'.&Apache::loncommon::end_data_table_row().
                        &Apache::loncommon::start_data_table_row().'<td>'.(<<ENDGRADINGFORM);
         <label><input type="radio" name="gradingmechanism" value="attendance"$checked{'attendance'} onclick="sanitycheck()" />$attendance </label>
   <br /><label><input type="radio" name="gradingmechanism" value="personnel"$checked{'personnel'} onclick="sanitycheck()" />$personnel</label>
   <br /><label><input type="radio" name="gradingmechanism" value="specific"$checked{'specific'} onclick="sanitycheck()" />$specific </label>
   <input type="text" name="specificid" value="$env{'form.specificid'}" size="20" />
   <br /><label><input type="radio" name="gradingmechanism" value="given"$checked{'given'} onclick="sanitycheck()" />$given </label>
   <br />&nbsp;&nbsp;&nbsp;
   <input type="text" name="givenanswer" size="50" />
   <input type="hidden" name="waschecked" value="$env{'form.gradingmechanism'}" />
   ENDGRADINGFORM
       $result.='</td>'.&Apache::loncommon::end_data_table_row().
                        &Apache::loncommon::start_data_table_row().'<td>'.(<<ENDPERCFORM);
         <label>$pcorrect: <input type="text" name="pcorrect" size="4" value="$env{'form.pcorrect'}" onchange="sanitycheck()" /></label>
   <br /><label>$pincorrect: <input type="text" name="pincorrect" size="4" value="$env{'form.pincorrect'}" onchange="sanitycheck()" /></label>
   <br /><input type="button" onclick="javascript:checkUpload(this.form);" value="$upload" />
   </form>
   ENDPERCFORM
       $result.='</td>'.
                &Apache::loncommon::end_data_table_row().
                &Apache::loncommon::end_data_table();
       return $result;
   }
   
   sub process_clicker_file {
       my ($r,$symb) = @_;
       if (!$symb) {return '';}
   
       my %Saveable_Parameters=&clicker_grading_parameters();
       &Apache::loncommon::store_course_settings('grades_clicker',
                                                 \%Saveable_Parameters);
       my $result='';
       if (($env{'form.gradingmechanism'} eq 'specific') && ($env{'form.specificid'}!~/\w/)) {
    $result.='<span class="LC_error">'.&mt('You need to specify a clicker ID for the correct answer').'</span>';
    return $result;
       }
       if (($env{'form.gradingmechanism'} eq 'given') && ($env{'form.givenanswer'}!~/\S/)) {
           $result.='<span class="LC_error">'.&mt('You need to specify the correct answer').'</span>';
           return $result;
       }
       my $foundgiven=0;
       if ($env{'form.gradingmechanism'} eq 'given') {
           $env{'form.givenanswer'}=~s/^\s*//gs;
           $env{'form.givenanswer'}=~s/\s*$//gs;
           $env{'form.givenanswer'}=~s/[^a-zA-Z0-9\.\*\-\+]+/\,/g;
           $env{'form.givenanswer'}=uc($env{'form.givenanswer'});
           my @answers=split(/\,/,$env{'form.givenanswer'});
           $foundgiven=$#answers+1;
       }
       my %clicker_ids=&gather_clicker_ids();
       my %correct_ids;
       if ($env{'form.gradingmechanism'} eq 'personnel') {
    %correct_ids=&gather_adv_clicker_ids();
       }
       if ($env{'form.gradingmechanism'} eq 'specific') {
    foreach my $correct_id (split(/[\s\,]/,$env{'form.specificid'})) {;
      $correct_id=~tr/a-z/A-Z/;
      $correct_id=~s/\s//gs;
      $correct_id=~s/^[\#0]+//;
              $correct_id=~s/[\-\:]//g;
              if ($correct_id) {
         $correct_ids{$correct_id}='specified';
              }
           }
       }
       if ($env{'form.gradingmechanism'} eq 'attendance') {
    $result.=&mt('Score based on attendance only');
       } elsif ($env{'form.gradingmechanism'} eq 'given') {
           $result.=&mt('Score based on [_1] ([_2] answers)','<tt>'.$env{'form.givenanswer'}.'</tt>',$foundgiven);
       } else {
    my $number=0;
    $result.='<p><b>'.&mt('Correctness determined by the following IDs').'</b>';
    foreach my $id (sort(keys(%correct_ids))) {
       $result.='<br /><tt>'.$id.'</tt> - ';
       if ($correct_ids{$id} eq 'specified') {
    $result.=&mt('specified');
       } else {
    my ($uname,$udom)=split(/\:/,$correct_ids{$id});
    $result.=&Apache::loncommon::plainname($uname,$udom);
     }      }
  } else {      $number++;
     $request->print("Unknown action: $command:");  
  }   }
           $result.="</p>\n";
           if ($number==0) {
               $result .=
                    &Apache::lonhtmlcommon::confirm_success(
                        &mt('No IDs found to determine correct answer'),1);
               return $result;
           }
     }      }
     &send_footer($request);      if (length($env{'form.upfile'}) < 2) {
     return '';          $result .=
               &Apache::lonhtmlcommon::confirm_success(
                   &mt('The file: [_1] you attempted to upload contained no information. Please check that you entered the correct filename.',
                           '<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"').'</span>'),1);
           return $result;
       }
       my $mimetype;
       if ($env{'form.upfiletype'} eq 'iclicker') {
           my $mm = new File::MMagic;
           $mimetype = $mm->checktype_contents($env{'form.upfile'});
           unless (($mimetype eq 'text/plain') || ($mimetype eq 'text/html')) {
               $result.= '<p>'.
                   &Apache::lonhtmlcommon::confirm_success(
                       &mt('File format is neither csv (iclicker 6) nor xml (iclicker 7)'),1).'</p>';
               return $result;
           }
       } elsif (($env{'form.upfiletype'} ne 'interwrite') && ($env{'form.upfiletype'} ne 'turning')) {
           $result .= '<p>'.
               &Apache::lonhtmlcommon::confirm_success(
                   &mt('Invalid clicker type: choose one of: i>clicker, Interwrite PRS, or Turning Technologies.'),1).'</p>';
           return $result;
       }
   
   # Were able to get all the info needed, now analyze the file
   
       $result.=&Apache::loncommon::studentbrowser_javascript();
       $symb = &Apache::lonenc::check_encrypt($symb);
       $result.=&Apache::loncommon::start_data_table().
                &Apache::loncommon::start_data_table_header_row().
                '<th>'.&mt('Evaluate clicker file').'</th>'.
                &Apache::loncommon::end_data_table_header_row().
                &Apache::loncommon::start_data_table_row().(<<ENDHEADER);
   <td>
   <form method="post" action="/adm/grades" name="clickeranalysis">
   <input type="hidden" name="symb" value="$symb" />
   <input type="hidden" name="command" value="assignclickergrades" />
   <input type="hidden" name="gradingmechanism" value="$env{'form.gradingmechanism'}" />
   <input type="hidden" name="pcorrect" value="$env{'form.pcorrect'}" />
   <input type="hidden" name="pincorrect" value="$env{'form.pincorrect'}" />
   ENDHEADER
       if ($env{'form.gradingmechanism'} eq 'given') {
          $result.='<input type="hidden" name="correct:given" value="'.$env{'form.givenanswer'}.'" />';
       } 
       my %responses;
       my @questiontitles;
       my $errormsg='';
       my $number=0;
       if ($env{'form.upfiletype'} eq 'iclicker') {
           if ($mimetype eq 'text/plain') {
               ($errormsg,$number)=&iclicker_eval(\@questiontitles,\%responses);
           } elsif ($mimetype eq 'text/html') {
               ($errormsg,$number)=&iclickerxml_eval(\@questiontitles,\%responses);
           }
       } elsif ($env{'form.upfiletype'} eq 'interwrite') {
           ($errormsg,$number)=&interwrite_eval(\@questiontitles,\%responses);
       } elsif ($env{'form.upfiletype'} eq 'turning') {
           ($errormsg,$number)=&turning_eval(\@questiontitles,\%responses);
       }
       $result.='<br />'.&mt('Found [_1] question(s)',$number).'<br />'.
                '<input type="hidden" name="number" value="'.$number.'" />'.
                &mt('Awarding [_1] percent for correct and [_2] percent for incorrect responses',
                    $env{'form.pcorrect'},$env{'form.pincorrect'}).
                '<br />';
       if (($env{'form.gradingmechanism'} eq 'given') && ($number!=$foundgiven)) {
          $result.='<span class="LC_error">'.&mt('Number of given answers does not agree with number of questions in file.').'</span>';
          return $result;
       } 
   # Remember Question Titles
   # FIXME: Possibly need delimiter other than ":"
       for (my $i=0;$i<$number;$i++) {
           $result.='<input type="hidden" name="question:'.$i.'" value="'.
                    &HTML::Entities::encode($questiontitles[$i],'"&<>').'" />';
       }
       my $correct_count=0;
       my $student_count=0;
       my $unknown_count=0;
   # Match answers with usernames
   # FIXME: Possibly need delimiter other than ":"
       foreach my $id (keys(%responses)) {
          if ($correct_ids{$id}) {
             $result.="\n".'<input type="hidden" name="correct:'.$correct_count.':'.$correct_ids{$id}.'" value="'.$responses{$id}.'" />';
             $correct_count++;
          } elsif ($clicker_ids{$id}) {
             if ($clicker_ids{$id}=~/\,/) {
   # More than one user with the same clicker!
                $result.="</td>".&Apache::loncommon::end_data_table_row().
                              &Apache::loncommon::start_data_table_row()."<td>".
                          &mt('Clicker registered more than once').": <tt>".$id."</tt><br />";
                $result.="\n".'<input type="hidden" name="unknown:'.$id.'" value="'.$responses{$id}.'" />'.
                              "<select name='multi".$id."'>";
                foreach my $reguser (sort(split(/\,/,$clicker_ids{$id}))) {
                    $result.="<option value='".$reguser."'>".&Apache::loncommon::plainname(split(/\:/,$reguser)).' ('.$reguser.')</option>';
                }
                $result.='</select>';
                $unknown_count++;
             } else {
   # Good: found one and only one user with the right clicker
                $result.="\n".'<input type="hidden" name="student:'.$clicker_ids{$id}.'" value="'.$responses{$id}.'" />';
                $student_count++;
             }
          } else {
             $result.="</td>".&Apache::loncommon::end_data_table_row().
                              &Apache::loncommon::start_data_table_row()."<td>".
                       &mt('Unregistered Clicker')." <tt>".$id."</tt><br />";
             $result.="\n".'<input type="hidden" name="unknown:'.$id.'" value="'.$responses{$id}.'" />'.
                      "\n".&mt("Username").": <input type='text' name='uname".$id."' />&nbsp;".
                      "\n".&mt("Domain").": ".
                      &Apache::loncommon::select_dom_form($env{'course.'.$env{'request.course.id'}.'.domain'},'udom'.$id).'&nbsp;'.
                      &Apache::loncommon::selectstudent_link('clickeranalysis','uname'.$id,'udom'.$id,'',$id);
             $unknown_count++;
          }
       }
       $result.='<hr />'.
                &mt('Found [_1] registered and [_2] unregistered clickers.',$student_count,$unknown_count);
       if (($env{'form.gradingmechanism'} ne 'attendance') && ($env{'form.gradingmechanism'} ne 'given')) {
          if ($correct_count==0) {
             $errormsg.="Found no correct answers for grading!";
          } elsif ($correct_count>1) {
             $result.='<br /><span class="LC_warning">'.&mt("Found [_1] entries for grading!",$correct_count).'</span>';
          }
       }
       if ($number<1) {
          $errormsg.="Found no questions.";
       }
       if ($errormsg) {
          $result.='<br /><span class="LC_error">'.&mt($errormsg).'</span>';
       } else {
          $result.='<br /><input type="submit" name="finalize" value="'.&mt('Finalize Grading').'" />';
       }
       $result.='</form></td>'.
                &Apache::loncommon::end_data_table_row().
                &Apache::loncommon::end_data_table();
       return $result;
 }  }
   
 sub send_header {  sub iclicker_eval {
     my ($request)= @_;      my ($questiontitles,$responses)=@_;
     $request->print(&Apache::lontexconvert::header());      my $number=0;
 #  $request->print("      my $errormsg='';
 #<script>      foreach my $line (split(/[\n\r]/,$env{'form.upfile'})) {
 #remotewindow=open('','homeworkremote');          my %components=&Apache::loncommon::record_sep($line);
 #remotewindow.close();          my @entries=map {$components{$_}} (sort(keys(%components)));
 #</script>");    if ($entries[0] eq 'Question') {
     $request->print(&Apache::loncommon::bodytag('Grading'));      for (my $i=3;$i<$#entries;$i+=6) {
    $$questiontitles[$number]=$entries[$i];
    $number++;
       }
    }
    if ($entries[0]=~/^\#/) {
       my $id=$entries[0];
       my @idresponses;
       $id=~s/^[\#0]+//;
       for (my $i=0;$i<$number;$i++) {
    my $idx=3+$i*6;
                   $entries[$idx]=~s/[^a-zA-Z0-9\.\*\-\+]+//g;
    push(@idresponses,$entries[$idx]);
       }
       $$responses{$id}=join(',',@idresponses);
    }
       }
       return ($errormsg,$number);
 }  }
   
 sub send_footer {  sub iclickerxml_eval {
     my ($request)= @_;      my ($questiontitles,$responses)=@_;
     $request->print('</body>');      my $number=0;
     $request->print(&Apache::lontexconvert::footer());      my $errormsg='';
       my @state;
       my %respbyid;
       my $p = HTML::Parser->new
       (
           xml_mode => 1,
           start_h =>
               [sub {
                    my ($tagname,$attr) = @_;
                    push(@state,$tagname);
                    if ("@state" eq "ssn p") {
                        my $title = $attr->{qn};
                        $title =~ s/(^\s+|\s+$)//g;
                        $questiontitles->[$number]=$title;
                    } elsif ("@state" eq "ssn p v") {
                        my $id = $attr->{id};
                        my $entry = $attr->{ans};
                        $id=~s/^[\#0]+//;
                        $entry =~s/[^a-zA-Z0-9\.\*\-\+]+//g;
                        $respbyid{$id}[$number] = $entry;
                    }
               }, "tagname, attr"],
            end_h =>
                  [sub {
                      my ($tagname) = @_;
                      if ("@state" eq "ssn p") {
                          $number++;
                      }
                      pop(@state);
                   }, "tagname"],
       );
   
       $p->parse($env{'form.upfile'});
       $p->eof;
       foreach my $id (keys(%respbyid)) {
           $responses->{$id}=join(',',@{$respbyid{$id}});
       }
       return ($errormsg,$number);
   }
   
   sub interwrite_eval {
       my ($questiontitles,$responses)=@_;
       my $number=0;
       my $errormsg='';
       my $skipline=1;
       my $questionnumber=0;
       my %idresponses=();
       foreach my $line (split(/[\n\r]/,$env{'form.upfile'})) {
           my %components=&Apache::loncommon::record_sep($line);
           my @entries=map {$components{$_}} (sort(keys(%components)));
           if ($entries[1] eq 'Time') { $skipline=0; next; }
           if ($entries[1] eq 'Response') { $skipline=1; }
           next if $skipline;
           if ($entries[0]!=$questionnumber) {
              $questionnumber=$entries[0];
              $$questiontitles[$number]=&mt('Question [_1]',$questionnumber);
              $number++;
           }
           my $id=$entries[4];
           $id=~s/^[\#0]+//;
           $id=~s/^v\d*\://i;
           $id=~s/[\-\:]//g;
           $idresponses{$id}[$number]=$entries[6];
       }
       foreach my $id (keys(%idresponses)) {
          $$responses{$id}=join(',',@{$idresponses{$id}});
          $$responses{$id}=~s/^\s*\,//;
       }
       return ($errormsg,$number);
   }
   
   sub turning_eval {
       my ($questiontitles,$responses)=@_;
       my $number=0;
       my $errormsg='';
       foreach my $line (split(/[\n\r]/,$env{'form.upfile'})) {
           my %components=&Apache::loncommon::record_sep($line);
           my @entries=map {$components{$_}} (sort(keys(%components)));
           if ($#entries>$number) { $number=$#entries; }
           my $id=$entries[0];
           my @idresponses;
           $id=~s/^[\#0]+//;
           unless ($id) { next; }
           for (my $idx=1;$idx<=$#entries;$idx++) {
               $entries[$idx]=~s/\,/\;/g;
               $entries[$idx]=~s/[^a-zA-Z0-9\.\*\-\+\;]+//g;
               push(@idresponses,$entries[$idx]);
           }
           $$responses{$id}=join(',',@idresponses);
       }
       for (my $i=1; $i<=$number; $i++) {
           $$questiontitles[$i]=&mt('Question [_1]',$i);
       }
       return ($errormsg,$number);
   }
   
   
   sub assign_clicker_grades {
       my ($r,$symb) = @_;
       if (!$symb) {return '';}
   # See which part we are saving to
       my $res_error;
       my ($partlist,$handgrade,$responseType) = &response_type($symb,\$res_error);
       if ($res_error) {
           return &navmap_errormsg();
       }
   # FIXME: This should probably look for the first handgradeable part
       my $part=$$partlist[0];
   # Start screen output
       my $result = &Apache::loncommon::start_data_table().
                    &Apache::loncommon::start_data_table_header_row().
                    '<th>'.&mt('Assigning grades based on clicker file').'</th>'.
                    &Apache::loncommon::end_data_table_header_row().
                    &Apache::loncommon::start_data_table_row().'<td>';
   # Get correct result
   # FIXME: Possibly need delimiter other than ":"
       my @correct=();
       my $gradingmechanism=$env{'form.gradingmechanism'};
       my $number=$env{'form.number'};
       if ($gradingmechanism ne 'attendance') {
          foreach my $key (keys(%env)) {
             if ($key=~/^form\.correct\:/) {
                my @input=split(/\,/,$env{$key});
                for (my $i=0;$i<=$#input;$i++) {
                    if (($correct[$i]) && ($input[$i]) &&
                        ($correct[$i] ne $input[$i])) {
                       $result.='<br /><span class="LC_warning">'.
                                &mt('More than one correct result given for question "[_1]": [_2] versus [_3].',
                                    $env{'form.question:'.$i},$correct[$i],$input[$i]).'</span>';
                    } elsif (($input[$i]) || ($input[$i] eq '0')) {
                       $correct[$i]=$input[$i];
                    }
                }
             }
          }
          for (my $i=0;$i<$number;$i++) {
             if ((!$correct[$i]) && ($correct[$i] ne '0')) {
                $result.='<br /><span class="LC_error">'.
                         &mt('No correct result given for question "[_1]"!',
                             $env{'form.question:'.$i}).'</span>';
             }
          }
          $result.='<br />'.&mt("Correct answer: [_1]",join(', ',map { ((($_) || ($_ eq '0'))?$_:'-') } @correct));
       }
   # Start grading
       my $pcorrect=$env{'form.pcorrect'};
       my $pincorrect=$env{'form.pincorrect'};
       my $storecount=0;
       my %users=();
       foreach my $key (keys(%env)) {
          my $user='';
          if ($key=~/^form\.student\:(.*)$/) {
             $user=$1;
          }
          if ($key=~/^form\.unknown\:(.*)$/) {
             my $id=$1;
             if (($env{'form.uname'.$id}) && ($env{'form.udom'.$id})) {
                $user=$env{'form.uname'.$id}.':'.$env{'form.udom'.$id};
             } elsif ($env{'form.multi'.$id}) {
                $user=$env{'form.multi'.$id};
             }
          }
          if ($user) {
             if ($users{$user}) {
                $result.='<br /><span class="LC_warning">'.
                         &mt('More than one entry found for [_1]!','<tt>'.$user.'</tt>').
                         '</span><br />';
             }
             $users{$user}=1; 
             my @answer=split(/\,/,$env{$key});
             my $sum=0;
             my $realnumber=$number;
             for (my $i=0;$i<$number;$i++) {
                if  ($correct[$i] eq '-') {
                   $realnumber--;
                } elsif (($answer[$i]) || ($answer[$i]=~/^[0\.]+$/)) {
                   if ($gradingmechanism eq 'attendance') {
                      $sum+=$pcorrect;
                   } elsif ($correct[$i] eq '*') {
                      $sum+=$pcorrect;
                   } else {
   # We actually grade if correct or not
                      my $increment=$pincorrect;
   # Special case: numerical answer "0"
                      if ($correct[$i] eq '0') {
                         if ($answer[$i]=~/^[0\.]+$/) {
                            $increment=$pcorrect;
                         }
   # General numerical answer, both evaluate to something non-zero
                      } elsif ((1.0*$correct[$i]!=0) && (1.0*$answer[$i]!=0)) {
                         if (1.0*$correct[$i]==1.0*$answer[$i]) {
                            $increment=$pcorrect;
                         }
   # Must be just alphanumeric
                      } elsif ($answer[$i] eq $correct[$i]) {
                         $increment=$pcorrect;
                      }
                      $sum+=$increment;
                   }
                }
             }
             my $ave=$sum/(100*$realnumber);
   # Store
             my ($username,$domain)=split(/\:/,$user);
             my %grades=();
             $grades{"resource.$part.solved"}='correct_by_override';
             $grades{"resource.$part.awarded"}=$ave;
             $grades{"resource.regrader"}="$env{'user.name'}:$env{'user.domain'}";
             my $returncode=&Apache::lonnet::cstore(\%grades,$symb,
                                                    $env{'request.course.id'},
                                                    $domain,$username);
             if ($returncode ne 'ok') {
                $result.="<br /><span class=\"LC_error\">Failed to save student $username:$domain. Message when trying to save was ($returncode)</span>";
             } else {
                $storecount++;
             }
          }
       }
   # We are done
       $result.='<br />'.&mt('Successfully stored grades for [quant,_1,student].',$storecount).
                '</td>'.
                &Apache::loncommon::end_data_table_row().
                &Apache::loncommon::end_data_table();
       return $result;
   }
   
   sub navmap_errormsg {
       return '<div class="LC_error">'.
              &mt('An error occurred retrieving information about resources in the course.').'<br />'.
              &mt('It is recommended that you [_1]re-initialize the course[_2] and then return to this grading page.','<a href="/adm/roles?selectrole=1&newrole='.$env{'request.role'}.'">','</a>').
              '</div>';
   }
   
   sub startpage {
       my ($r,$symb,$crumbs,$onlyfolderflag,$nodisplayflag,$stuvcurrent,$stuvdisp,$nomenu,$head_extra,$onload,$divforres) = @_;
       my %args;
       if ($onload) {
            my %loaditems = (
                           'onload' => $onload,
                         );
            $args{'add_entries'} = \%loaditems;
       }
       if ($nomenu) {
           $args{'only_body'} = 1; 
           $r->print(&Apache::loncommon::start_page("Student's Version",$head_extra,\%args));
       } else {
           if ($env{'request.course.id'}) { 
               unshift(@$crumbs,{href=>&href_symb_cmd($symb,'gradingmenu'),text=>"Grading"});
           }
           $args{'bread_crumbs'} = $crumbs;
           $r->print(&Apache::loncommon::start_page('Grading',$head_extra,\%args));
           if ($env{'request.course.id'}) {
               &Apache::lonquickgrades::startGradeScreen($r,($env{'form.symb'}?'probgrading':'grading'));
           }
       }
       unless ($nodisplayflag) {
           $r->print(&Apache::lonhtmlcommon::resource_info_box($symb,$onlyfolderflag,$stuvcurrent,$stuvdisp,$divforres));
       }
   }
   
   sub select_problem {
       my ($r)=@_;
       $r->print('<h3>'.&mt('Select the problem or one of the problems you want to grade').'</h3><form action="/adm/grades">');
       $r->print(&Apache::lonstathelpers::problem_selector('.',undef,1,undef,undef,1,1));
       $r->print('<input type="hidden" name="command" value="gradingmenu" />');
       $r->print('<input type="submit" value="'.&mt('Next').' &rarr;" /></form>');
   }
   
   sub handler {
       my $request=$_[0];
       &reset_caches();
       if ($request->header_only) {
           &Apache::loncommon::content_type($request,'text/html');
           $request->send_http_header;
           return OK;
       }
       &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
   
   # see what command we need to execute
   
       my @commands=&Apache::loncommon::get_env_multiple('form.command');
       my $command=$commands[0];
   
       &init_perm();
       if (!$env{'request.course.id'}) {
           unless ((&Apache::lonnet::allowed('usc',$env{'request.role.domain'})) &&
                   ($command =~ /^scantronupload/)) {
               # Not in a course.
               $env{'user.error.msg'}="/adm/grades::vgr:0:0:Cannot display grades page outside course context";
               return HTTP_NOT_ACCEPTABLE;
           }
       } elsif (!%perm) {
           $request->internal_redirect('/adm/quickgrades');
           return OK;
       }
       &Apache::loncommon::content_type($request,'text/html');
       $request->send_http_header;
   
       if ($#commands > 0) {
    &Apache::lonnet::logthis("grades got multiple commands ".join(':',@commands));
       }
   
   # see what the symb is
   
       my $symb=$env{'form.symb'};
       unless ($symb) {
          (my $url=$env{'form.url'}) =~ s-^https*://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
          $symb=&Apache::lonnet::symbread($url);
       }
       &Apache::lonenc::check_decrypt(\$symb);
   
       $ssi_error = 0;
       if (($symb eq '' || $command eq '') && ($env{'request.course.id'})) {
   #
   # Not called from a resource, but inside a course
   #    
           &startpage($request,undef,[],1,1);
           &select_problem($request);
       } else {
    if ($command eq 'submission' && $perm{'vgr'}) {
               my ($stuvcurrent,$stuvdisp,$versionform,$js,$onload);
               if (($env{'form.student'} ne '') && ($env{'form.userdom'} ne '')) {
                   ($stuvcurrent,$stuvdisp,$versionform,$js) =
                       &choose_task_version_form($symb,$env{'form.student'},
                                                 $env{'form.userdom'});
               }
               my $divforres;
               if ($env{'form.student'} eq '') {
                   $js .= &part_selector_js();
                   $onload = "toggleParts('gradesub');";
               } else {
                   $divforres = 1;
               }
               my $head_extra = $js;
               unless ($env{'form.vProb'} eq 'no') {
                   my $csslinks = &Apache::loncommon::css_links($symb);
                   if ($csslinks) {
                       $head_extra .= "\n$csslinks";
                   }
               }
               &startpage($request,$symb,[{href=>"", text=>"Student Submissions"}],undef,undef,
                          $stuvcurrent,$stuvdisp,undef,$head_extra,$onload,$divforres);
               if ($versionform) {
                   if ($divforres) {
                       $request->print('<div style="padding:0;clear:both;margin:0;border:0"></div>');
                   }
                   $request->print($versionform);
               }
       ($env{'form.student'} eq '' ? &listStudents($request,$symb,'',$divforres) : &submission($request,0,0,$symb,$divforres,$command));
           } elsif ($command eq 'versionsub' && $perm{'vgr'}) {
               my ($stuvcurrent,$stuvdisp,$versionform,$js) =
                   &choose_task_version_form($symb,$env{'form.student'},
                                             $env{'form.userdom'},
                                             $env{'form.inhibitmenu'});
               my $head_extra = $js;
               unless ($env{'form.vProb'} eq 'no') {
                   my $csslinks = &Apache::loncommon::css_links($symb);
                   if ($csslinks) {
                       $head_extra .= "\n$csslinks";
                   }
               }
               &startpage($request,$symb,[{href=>"", text=>"Previous Student Version"}],undef,undef,
                          $stuvcurrent,$stuvdisp,$env{'form.inhibitmenu'},$head_extra);
               if ($versionform) {
                   $request->print($versionform);
               }
               $request->print('<br clear="all" />');
               $request->print(&show_previous_task_version($request,$symb));
    } elsif ($command eq 'pickStudentPage' && $perm{'vgr'}) {
               &startpage($request,$symb,[{href=>&href_symb_cmd($symb,'all_for_one'),text=>'Grade page/folder for one student'},
                                          {href=>'',text=>'Select student'}],1,1);
       &pickStudentPage($request,$symb);
    } elsif ($command eq 'displayPage' && $perm{'vgr'}) {
               my $csslinks;
               unless ($env{'form.vProb'} eq 'no') {
                   $csslinks = &Apache::loncommon::css_links($symb,'map');
               }
               &startpage($request,$symb,
                                         [{href=>&href_symb_cmd($symb,'all_for_one'),text=>'Grade page/folder for one student'},
                                          {href=>'',text=>'Select student'},
                                          {href=>'',text=>'Grade student'}],1,1,undef,undef,undef,$csslinks);
       &displayPage($request,$symb);
    } elsif ($command eq 'gradeByPage' && $perm{'mgr'}) {
               &startpage($request,$symb,[{href=>&href_symb_cmd($symb,'all_for_one'),text=>'Grade page/folder for one student'},
                                          {href=>'',text=>'Select student'},
                                          {href=>'',text=>'Grade student'},
                                          {href=>'',text=>'Store grades'}],1,1);
       &updateGradeByPage($request,$symb);
    } elsif ($command eq 'processGroup' && $perm{'vgr'}) {
               my $csslinks;
               unless ($env{'form.vProb'} eq 'no') {
                   $csslinks = &Apache::loncommon::css_links($symb);
               }
               &startpage($request,$symb,[{href=>'',text=>'...'},
                                          {href=>'',text=>'Modify grades'}],undef,undef,undef,undef,undef,$csslinks,undef,1);
       &processGroup($request,$symb);
    } elsif ($command eq 'gradingmenu' && $perm{'vgr'}) {
               &startpage($request,$symb);
       $request->print(&grading_menu($request,$symb));
    } elsif ($command eq 'individual' && $perm{'vgr'}) {
               &startpage($request,$symb,[{href=>'',text=>'Select individual students to grade'}]);
       $request->print(&submit_options($request,$symb));
           } elsif ($command eq 'ungraded' && $perm{'vgr'}) {
               my $js = &part_selector_js();
               my $onload = "toggleParts('gradesub');";
               &startpage($request,$symb,[{href=>'',text=>'Grade ungraded submissions'}],
                          undef,undef,undef,undef,undef,$js,$onload);
               $request->print(&listStudents($request,$symb,'graded'));
           } elsif ($command eq 'table' && $perm{'vgr'}) {
               &startpage($request,$symb,[{href=>"", text=>"Grading table"}]);
               $request->print(&submit_options_table($request,$symb));
           } elsif ($command eq 'all_for_one' && $perm{'vgr'}) {
               &startpage($request,$symb,[{href=>'',text=>'Grade page/folder for one student'}],1,1);
               $request->print(&submit_options_sequence($request,$symb));
    } elsif ($command eq 'viewgrades' && $perm{'vgr'}) {
               &startpage($request,$symb,[{href=>&href_symb_cmd($symb,"table"), text=>"Grading table"},{href=>'', text=>"Modify grades"}]);
       $request->print(&viewgrades($request,$symb));
    } elsif ($command eq 'handgrade' && $perm{'mgr'}) {
               &startpage($request,$symb,[{href=>'',text=>'...'},
                                          {href=>'',text=>'Store grades'}]);
       $request->print(&processHandGrade($request,$symb));
    } elsif ($command eq 'editgrades' && $perm{'mgr'}) {
               &startpage($request,$symb,[{href=>&href_symb_cmd($symb,"table"), text=>"Grading table"},
                                          {href=>&href_symb_cmd($symb,'viewgrades').'&group=all&section=all&Status=Active',
                                                                                text=>"Modify grades"},
                                          {href=>'', text=>"Store grades"}]);
       $request->print(&editgrades($request,$symb));
           } elsif ($command eq 'initialverifyreceipt' && $perm{'vgr'}) {
               &startpage($request,$symb,[{href=>'',text=>'Verify Receipt Number'}]);
               $request->print(&initialverifyreceipt($request,$symb));
    } elsif ($command eq 'verify' && $perm{'vgr'}) {
               &startpage($request,$symb,[{href=>&href_symb_cmd($symb,"initialverifyreceipt"),text=>'Verify Receipt Number'},
                                          {href=>'',text=>'Verification Result'}]);
       $request->print(&verifyreceipt($request,$symb));
           } elsif ($command eq 'processclicker' && $perm{'mgr'}) {
               &startpage($request,$symb,[{href=>'', text=>'Process clicker'}]);
               $request->print(&process_clicker($request,$symb));
           } elsif ($command eq 'processclickerfile' && $perm{'mgr'}) {
               &startpage($request,$symb,[{href=>&href_symb_cmd($symb,'processclicker'), text=>'Process clicker'},
                                          {href=>'', text=>'Process clicker file'}]);
               $request->print(&process_clicker_file($request,$symb));
           } elsif ($command eq 'assignclickergrades' && $perm{'mgr'}) {
               &startpage($request,$symb,[{href=>&href_symb_cmd($symb,'processclicker'), text=>'Process clicker'},
                                          {href=>'', text=>'Process clicker file'},
                                          {href=>'', text=>'Store grades'}]);
               $request->print(&assign_clicker_grades($request,$symb));
    } elsif ($command eq 'csvform' && $perm{'mgr'}) {
               &startpage($request,$symb,[{href=>'', text=>'Upload Scores'}],1,1);
       $request->print(&upcsvScores_form($request,$symb));
    } elsif ($command eq 'csvupload' && $perm{'mgr'}) {
               &startpage($request,$symb,[{href=>'', text=>'Upload Scores'}],1,1);
       $request->print(&csvupload($request,$symb));
    } elsif ($command eq 'csvuploadmap' && $perm{'mgr'} ) {
               &startpage($request,$symb,[{href=>'', text=>'Upload Scores'}],1,1);
       $request->print(&csvuploadmap($request,$symb));
    } elsif ($command eq 'csvuploadoptions' && $perm{'mgr'}) {
       if ($env{'form.associate'} ne 'Reverse Association') {
                   &startpage($request,$symb,[{href=>'', text=>'Upload Scores'}],1,1);
    $request->print(&csvuploadoptions($request,$symb));
       } else {
    if ( $env{'form.upfile_associate'} ne 'reverse' ) {
       $env{'form.upfile_associate'} = 'reverse';
    } else {
       $env{'form.upfile_associate'} = 'forward';
    }
                   &startpage($request,$symb,[{href=>'', text=>'Upload Scores'}],1,1);
    $request->print(&csvuploadmap($request,$symb));
       }
    } elsif ($command eq 'csvuploadassign' && $perm{'mgr'} ) {
               &startpage($request,$symb,[{href=>'', text=>'Upload Scores'}],1,1);
       $request->print(&csvuploadassign($request,$symb));
    } elsif ($command eq 'scantron_selectphase' && $perm{'mgr'}) {
               &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1,
                          undef,undef,undef,undef,'toggleScantab(document.rules);');
       $request->print(&scantron_selectphase($request,undef,$symb));
     } elsif ($command eq 'scantron_warning' && $perm{'mgr'}) {
               &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
        $request->print(&scantron_do_warning($request,$symb));
    } elsif ($command eq 'scantron_validate' && $perm{'mgr'}) {
               &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
       $request->print(&scantron_validate_file($request,$symb));
    } elsif ($command eq 'scantron_process' && $perm{'mgr'}) {
               &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
       $request->print(&scantron_process_students($request,$symb));
     } elsif ($command eq 'scantronupload' && 
     (&Apache::lonnet::allowed('usc',$env{'request.role.domain'}) || $perm{'usc'})) {
               &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1,
                          undef,undef,undef,undef,'toggleScantab(document.rules);');
        $request->print(&scantron_upload_scantron_data($request,$symb)); 
     } elsif ($command eq 'scantronupload_save' &&
     (&Apache::lonnet::allowed('usc',$env{'request.role.domain'}) || $perm{'usc'})) {
               &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
        $request->print(&scantron_upload_scantron_data_save($request,$symb));
     } elsif ($command eq 'scantron_download' && ($perm{'usc'} || $perm{'mgr'})) {
               &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
        $request->print(&scantron_download_scantron_data($request,$symb));
           } elsif ($command eq 'scantronupload_delete' &&
                    (&Apache::lonnet::allowed('usc',$env{'request.role.domain'}) || $perm{'usc'})) {
               &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
               &scantron_upload_delete($request,$symb);
           } elsif ($command eq 'checksubmissions' && $perm{'vgr'}) {
               &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
               $request->print(&checkscantron_results($request,$symb));
           } elsif ($command eq 'downloadfilesselect' && $perm{'vgr'}) {
               my $js = &part_selector_js();
               my $onload = "toggleParts('gradingMenu');";
               &startpage($request,$symb,[{href=>'', text=>'Select which submissions to download'}],
                          undef,undef,undef,undef,undef,$js,$onload);
               $request->print(&submit_options_download($request,$symb));
            } elsif ($command eq 'downloadfileslink' && $perm{'vgr'}) {
               &startpage($request,$symb,
      [{href=>&href_symb_cmd($symb,'downloadfilesselect'), text=>'Select which submissions to download'},
       {href=>'', text=>'Download submitted files'}],
                  undef,undef,undef,undef,undef,undef,undef,1);
               $request->print('<div style="padding:0;clear:both;margin:0;border:0"></div>');
               &submit_download_link($request,$symb);
    } elsif ($command) {
               &startpage($request,$symb,[{href=>'', text=>'Access denied'}]);
       $request->print('<p class="LC_error">'.&mt('Access Denied ([_1])',$command).'</p>');
    }
       }
       if ($ssi_error) {
    &ssi_print_error($request);
       }
       if ($env{'form.inhibitmenu'}) {
           $request->print(&Apache::loncommon::end_page());
       } elsif ($env{'request.course.id'}) {
           &Apache::lonquickgrades::endGradeScreen($request);
       }
       &reset_caches();
       return OK;
 }  }
   
 1;  1;
   
 __END__;  __END__;
   
   
   =head1 NAME
   
   Apache::grades
   
   =head1 SYNOPSIS
   
   Handles the viewing of grades.
   
   This is part of the LearningOnline Network with CAPA project
   described at http://www.lon-capa.org.
   
   =head1 OVERVIEW
   
   Do an ssi with retries:
   While I'd love to factor out this with the version in lonprintout,
   that would either require a data coupling between modules, which I refuse to perpetuate (there's quite enough of that already), or would require the invention of another infrastructure
   I'm not quite ready to invent (e.g. an ssi_with_retry object).
   
   At least the logic that drives this has been pulled out into loncommon.
   
   
   
   ssi_with_retries - Does the server side include of a resource.
                        if the ssi call returns an error we'll retry it up to
                        the number of times requested by the caller.
                        If we still have a problem, no text is appended to the
                        output and we set some global variables.
                        to indicate to the caller an SSI error occurred.  
                        All of this is supposed to deal with the issues described
                        in LON-CAPA BZ 5631 see:
                        http://bugs.lon-capa.org/show_bug.cgi?id=5631
                        by informing the user that this happened.
   
   Parameters:
     resource   - The resource to include.  This is passed directly, without
                  interpretation to lonnet::ssi.
     form       - The form hash parameters that guide the interpretation of the resource
                  
     retries    - Number of retries allowed before giving up completely.
   Returns:
     On success, returns the rendered resource identified by the resource parameter.
   Side Effects:
     The following global variables can be set:
      ssi_error                - If an unrecoverable error occurred this becomes true.
                                 It is up to the caller to initialize this to false
                                 if desired.
      ssi_error_resource  - If an unrecoverable error occurred, this is the value
                                 of the resource that could not be rendered by the ssi
                                 call.
      ssi_error_message   - The error string fetched from the ssi response
                                 in the event of an error.
   
   
   =head1 HANDLER SUBROUTINE
   
   ssi_with_retries()
   
   =head1 SUBROUTINES
   
   =over
   
   =head1 Routines to display previous version of a Task for a specific student
   
   Tasks are graded pass/fail. Students who have yet to pass a particular Task
   can receive another opportunity. Access to tasks is slot-based. If a slot
   requires a proctor to check-in the student, a new version of the Task will
   be created when the student is checked in to the new opportunity.
   
   If a particular student has tried two or more versions of a particular task,
   the submission screen provides a user with vgr privileges (e.g., a Course
   Coordinator) the ability to display a previous version worked on by the
   student.  By default, the current version is displayed. If a previous version
   has been selected for display, submission data are only shown that pertain
   to that particular version, and the interface to submit grades is not shown.
   
   =over 4
   
   =item show_previous_task_version()
   
   Displays a specified version of a student's Task, as the student sees it.
   
   Inputs: 2
           request - request object
           symb    - unique symb for current instance of resource
   
   Output: None.
   
   Side Effects: calls &show_problem() to print version of Task, with
                 version contained in form item: $env{'form.previousversion'}
   
   =item choose_task_version_form()
   
   Displays a web form used to select which version of a student's view of a
   Task should be displayed.  Either launches a pop-up window, or replaces
   content in existing pop-up, or replaces page in main window.
   
   Inputs: 4
           symb    - unique symb for current instance of resource
           uname   - username of student
           udom    - domain of student
           nomenu  - 1 if display is in a pop-up window, and hence no menu
                     breadcrumbs etc., are displayed
   
   Output: 4
           current   - student's current version
           displayed - student's version being displayed
           result    - scalar containing HTML for web form used to switch to
                       a different version (or a link to close window, if pop-up).
           js        - javascript for processing selection in versions web form
   
   Side Effects: None.
   
   =item previous_display_javascript()
   
   Inputs: 2
           nomenu  - 1 if display is in a pop-up window, and hence no menu
                     breadcrumbs etc., are displayed.
           current - student's current version number.
   
   Output: 1
           js      - javascript for processing selection in versions web form.
   
   Side Effects: None.
   
   =back
   
   =head1 Routines to process bubblesheet data.
   
   =over 4
   
   =item scantron_get_correction() : 
   
      Builds the interface screen to interact with the operator to fix a
      specific error condition in a specific scanline
   
    Arguments:
       $r           - Apache request object
       $i           - number of the current scanline
       $scan_record - hash ref as returned from &scantron_parse_scanline()
       $scan_config - hash ref as returned from &Apache::lonnet::get_scantron_config()
       $line        - full contents of the current scanline
       $error       - error condition, valid values are
                      'incorrectCODE', 'duplicateCODE',
                      'doublebubble', 'missingbubble',
                      'duplicateID', 'incorrectID'
       $arg         - extra information needed
          For errors:
            - duplicateID   - paper number that this studentID was seen before on
            - duplicateCODE - array ref of the paper numbers this CODE was
                              seen on before
            - incorrectCODE - current incorrect CODE 
            - doublebubble  - array ref of the bubble lines that have double
                              bubble errors
            - missingbubble - array ref of the bubble lines that have missing
                              bubble errors
   
      $randomorder - True if exam folder has randomorder set
      $randompick  - True if exam folder has randompick set
      $respnumlookup - Reference to HASH mapping question numbers in bubble lines
                        for current line to question number used for same question
                        in "Master Seqence" (as seen by Course Coordinator).
      $startline   - Reference to hash where key is question number (0 is first)
                     and value is number of first bubble line for current student
                     or code-based randompick and/or randomorder.
   
   
   
   =item  scantron_get_maxbubble() : 
   
      Arguments:
          $nav_error  - Reference to scalar which is a flag to indicate a
                         failure to retrieve a navmap object.
          if $nav_error is set to 1 by scantron_get_maxbubble(), the 
          calling routine should trap the error condition and display the warning
          found in &navmap_errormsg().
   
          $scantron_config - Reference to bubblesheet format configuration hash.
   
      Returns the maximum number of bubble lines that are expected to
      occur. Does this by walking the selected sequence rendering the
      resource and then checking &Apache::lonxml::get_problem_counter()
      for what the current value of the problem counter is.
   
      Caches the results to $env{'form.scantron_maxbubble'},
      $env{'form.scantron.bubble_lines.n'}, 
      $env{'form.scantron.first_bubble_line.n'} and
      $env{"form.scantron.sub_bubblelines.n"}
      which are the total number of bubble lines, the number of bubble
      lines for response n and number of the first bubble line for response n,
      and a comma separated list of numbers of bubble lines for sub-questions
      (for optionresponse, matchresponse, and rankresponse items), for response n.  
   
   
   =item  scantron_validate_missingbubbles() : 
   
      Validates all scanlines in the selected file to not have any
       answers that don't have bubbles that have not been verified
       to be bubble free.
   
   =item  scantron_process_students() : 
   
      Routine that does the actual grading of the bubblesheet information.
   
      The parsed scanline hash is added to %env 
   
      Then foreach unskipped scanline it does an &Apache::lonnet::ssi()
      foreach resource , with the form data of
   
    'submitted'     =>'scantron' 
    'grade_target'  =>'grade',
    'grade_username'=> username of student
    'grade_domain'  => domain of student
    'grade_courseid'=> of course
    'grade_symb'    => symb of resource to grade
   
       This triggers a grading pass. The problem grading code takes care
       of converting the bubbled letter information (now in %env) into a
       valid submission.
   
   =item  scantron_upload_scantron_data() :
   
       Creates the screen for adding a new bubblesheet data file to a course.
   
   =item  scantron_upload_scantron_data_save() : 
   
      Adds a provided bubble information data file to the course if user
      has the correct privileges to do so.
   
   = item scantron_upload_delete() :
   
      Deletes a previously uploaded bubble information data file, if user
      was the one who uploaded the file, and has the privileges to do so.
   
   =item  valid_file() :
   
      Validates that the requested bubble data file exists in the course.
   
   =item  scantron_download_scantron_data() : 
   
      Shows a list of the three internal files (original, corrected,
      skipped) for a specific bubblesheet data file that exists in the
      course.
   
   =item  scantron_validate_ID() : 
   
      Validates all scanlines in the selected file to not have any
      invalid or underspecified student/employee IDs
   
   =item navmap_errormsg() :
   
      Returns HTML mark-up inside a <div></div> with a link to re-initialize the course.
      Should be called whenever the request to instantiate a navmap object fails.
   
   =back
   
   =back
   
   =cut

Removed from v.1.62  
changed lines
  Added in v.1.787


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