[BACK]Return to grades.pm CVS log [TXT] [DIR] Up to [LON-CAPA] / loncom / homework

Diff for /loncom/homework/grades.pm between versions 1.35 and 1.216

version 1.35, 2002/07/03 21:05:33 version 1.216, 2004/09/27 20:59:21
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, July 2002 H.K. Ng  
 #  
   
 package Apache::grades;  package Apache::grades;
 use strict;  use strict;
Line 39  use Apache::style; Line 33  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::loncoursedata;
   use Apache::lonmsg qw(:user_normal_msg);
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
   use Apache::lonlocal;
   use String::Similarity;
   
 sub moreinfo {  my %oldessays=();
   my ($request,$reason) = @_;  my %perm=();
   $request->print("Unable to process request: $reason");  
   if ( $Apache::grades::viewgrades eq 'F' ) {  
     $request->print('<form action="/adm/grades" method="post">'."\n");  
     if ($ENV{'form.url'}) {  
       $request->print('<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />'."\n");  
     }  
     if ($ENV{'form.symb'}) {  
       $request->print('<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />'."\n");  
     }  
 #    $request->print('<input type="hidden" name="command" value="submission" />'."\n");  
     $request->print('<input type="hidden" name="command" value="'.$ENV{'form.command'}.'" />'."\n");  
     $request->print("Student:".'<input type="text" name="student" value="'.$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 '';  
 }  
   
 sub verifyreceipt {  # ----- These first few routines are general use routines.----
     my $request=shift;  #
     my $courseid=$ENV{'request.course.id'};  # --- Retrieve the parts from the metadata file.---
 #    my $cdom=$ENV{"course.$courseid.domain"};  sub getpartlist {
 #    my $cnum=$ENV{"course.$courseid.num"};      my ($url,$symb) = @_;
     my $receipt=unpack("%32C*",$Apache::lonnet::perlvar{'lonHostID'}).'-'.      my $partorder = &Apache::lonnet::metadata($url, 'partorder');
                 $ENV{'form.receipt'};      my @parts;
     $receipt=~s/[^\-\d]//g;      if ($partorder) {
     my $symb=$ENV{'form.symb'};   for my $part (split (/,/,$partorder)) {
     unless ($symb) {      if (!&Apache::loncommon::check_if_partid_hidden($part,$symb)) {
  $symb=&Apache::lonnet::symbread($ENV{'form.url'});   push(@parts, $part);
       }
    }    
       } else {
    my $metadata = &Apache::lonnet::metadata($url, 'packages');
    foreach (split(/\,/,$metadata)) {
       if ($_ =~ /^part_(.*)$/) {
    if (!&Apache::loncommon::check_if_partid_hidden($1,$symb)) {
       push(@parts, $1);
    }
       }
    }
     }      }
     if ((&Apache::lonnet::allowed('mgr',$courseid)) && ($symb)) {      my @stores;
         $request->print('<h1>Verifying Submission Receipt '.$receipt.'</h1>');      foreach my $part (@parts) {
         my $matches=0;   my (@metakeys) = split(/,/,&Apache::lonnet::metadata($url,'keys'));
         my ($classlist) = &getclasslist('all','0');   foreach my $key (@metakeys) {
         foreach my $student ( sort(@{ $$classlist{'all'} }) ) {      if ($key =~ m/^stores_\Q$part\E_/) { push(@stores,$key); }
             my ($uname,$udom)=split(/\:/,$student);   }
             if ($receipt eq   
              &Apache::lonnet::ireceipt($uname,$udom,$courseid,$symb)) {  
                $request->print('Matching '.$student.'<br>');  
                $matches++;  
    }  
         }  
         $request->printf('<p>'.$matches." match%s</p>",$matches <= 1 ? '' : 'es');  
 # needs to print who is matched  
     }      }
     return '';      return @stores;
 }  }
   
 sub student_gradeStatus {  # --- Get the symbolic name of a problem and the url
   my ($url,$udom,$uname) = @_;  sub get_symb_and_url {
   my $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url)));      my ($request,$silent) = @_;
   my %record= &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);      (my $url=$ENV{'form.url'}) =~ s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
   foreach my $part (&getpartlist($url)) {      my $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url)));
     my ($temp,$part,$type)=split(/_/,$part);      if ($symb eq '') { 
     if ($type eq 'solved') {   if (!$silent) {
       my ($status,$foo)=split(/_/,$record{"resource.$part.$type"},2);      $request->print("Unable to handle ambiguous references:$url:.");
       $status = 'partial' if ($foo =~ /^partially/);      return ();
       $status = 'nothing' if ($status eq '');   }
       return $type,$status;  
     }      }
   }      return ($symb,$url);
   return '';  
 }  }
   
   # --- Retrieve the fullname for a user. Return lastname, first middle ---
   # --- Generation is attached next to the lastname if it exists. ---
 sub get_fullname {  sub get_fullname {
     my ($sname,$sdom) = @_;      my ($uname,$udom) = @_;
     my %name=&Apache::lonnet::get('environment', ['lastname','generation',      my %name=&Apache::lonnet::get('environment', ['lastname','generation',
   'firstname','middlename'],    'firstname','middlename'],
   $sdom,$sname);                                    $udom,$uname);
     my $fullname;      my $fullname;
     my ($tmp) = keys(%name);      my ($tmp) = keys(%name);
     if ($tmp !~ /^(con_lost|error|no_such_host)/i) {      if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
  $fullname=$name{'lastname'}.$name{'generation'};          $fullname = &Apache::loncoursedata::ProcessFullName
  if ($fullname =~ /[^\s]+/) { $fullname.=', '; }              (@name{qw/lastname generation firstname middlename/});
  $fullname.=$name{'firstname'}.' '.$name{'middlename'};      } else {
           &Apache::lonnet::logthis('grades.pm: no name data for '.$uname.
                                    '@'.$udom.':'.$tmp);
     }      }
     return $fullname;      return $fullname;
 }  }
   
 sub listStudents {  #--- Format fullname, username:domain if different for display
   my ($request) = shift;  #--- Use anywhere where the student names are listed
   my $cdom      =$ENV{"course.$ENV{'request.course.id'}.domain"};  sub nameUserString {
   my $cnum      =$ENV{"course.$ENV{'request.course.id'}.num"};      my ($type,$fullname,$uname,$udom) = @_;
   my $getsec    =$ENV{'form.section'};      if ($type eq 'header') {
   my $submitonly=$ENV{'form.submitonly'};   return '<b>&nbsp;Fullname&nbsp;</b><font color="#999999">(Username)</font>&nbsp;';
       } else {
   $request->print(<<ENDTABLEST);   return '&nbsp;'.$fullname.'<font color="#999999">&nbsp;('.$uname.
 <h2><font color="#339933">&nbsp;View Submissions for a Student or a Group of Students</font></h2>      ($ENV{'user.domain'} eq $udom ? '' : ' ('.$udom.')').')</font>';
 &nbsp;<font size=+1><b>Resource:</b> $ENV{'form.url'}<br /><br />      }
 <form action="/adm/grades" method="post">&nbsp;<b>View Options</b></font><br />  }
 &nbsp;<b>View Problem: </b><input type="radio" name="vProb" value="no" checked> no   
 <input type="radio" name="vProb" value="yes"> yes   
 &nbsp;&nbsp;&nbsp;<b>Submissions: </b><input type="radio" name="lastSub" value="last" checked> last   
 <input type="radio" name="lastSub" value="all"> all   
 <input type="hidden" name="section" value="$getsec">  
 <input type="hidden" name="submitonly" value="$submitonly">  
 <input type="hidden" name="response" value="$ENV{'form.response'}">  
 <input type="hidden" name="handgrade" value="$ENV{'form.handgrade'}">  
 <table border="0"><tr><td bgcolor="#777777">  
 <table border="0"><tr bgcolor="#e6ffff">  
 <td><b>&nbsp;Select&nbsp;</b></td><td><b>&nbsp;Username&nbsp;</b></td>  
 <td><b>&nbsp;Fullname&nbsp;</b></td><td><b>&nbsp;Domain&nbsp;</b></td>  
 <td><b>&nbsp;Grade Status&nbsp;</b></td></tr>  
 ENDTABLEST  
   if ($ENV{'form.url'}) {  
       $request->print('<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />'."\n");  
   }  
   if ($ENV{'form.symb'}) {  
       $request->print('<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />'."\n");  
   }  
   $request->print('<input type="hidden" name="command" value="processGroup" />'."\n");  
   
   my ($classlist) = &getclasslist($getsec,'0');  
   foreach my $student ( sort(@{ $$classlist{$getsec} }) ) {  
       my ($sname,$sdom) = split(/:/,$student);  
       my ($type,$status) = &student_gradeStatus($ENV{'form.url'},$cdom,$sname);  
       next if ($status eq 'nothing' && $submitonly eq 'yes');  
   
       my $fullname = &get_fullname($sname,$sdom);  
       if ( $Apache::grades::viewgrades eq 'F' ) {  
   $request->print("\n".'<tr bgcolor="#ffffe6">'.  
   '<td align="center"><input type=checkbox name="stuinfo" value="'.  
   $student.':'.$fullname.'"></td>'."\n".  
   '<td>&nbsp;'.$sname.'&nbsp;</td>'."\n".  
   '<td>&nbsp;'.$fullname.'&nbsp;</td>'."\n".  
   '<td align="middle">&nbsp;'.$sdom.'&nbsp;</td>'."\n");  
   $request->print('<td align="middle">&nbsp;'.$status.'&nbsp;</td>'."\n");  
   
   $request->print('</tr>');  #--- Get the partlist and the response type for a given problem. ---
       }  #--- Indicate if a response type is coded handgraded or not. ---
   }  sub response_type {
   $request->print('</table></td></tr></table>');      my ($url,$symb) = shift;
   $request->print('<input type="submit" name="submit" value="View/Grade" /><form />');      $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url))) if ($symb eq '');
       my $allkeys = &Apache::lonnet::metadata($url,'keys');
       my %vPart;
       foreach my $partid (&Apache::loncommon::get_env_multiple('form.vPart')) {
    $vPart{$partid}=1;
       }
       my %seen = ();
       my (@partlist,%handgrade,%responseType);
       foreach (split(/,/,&Apache::lonnet::metadata($url,'packages'))) {
    if (/^\w+response_.*/) {
       my ($responsetype,$part) = split(/_/,$_,2);
       my ($partid,$respid) = split(/_/,$part);
       if (&Apache::loncommon::check_if_partid_hidden($partid,$symb)) {
    next;
       }
       if (%vPart && !exists($vPart{$partid})) {
    next;
       }
       $responsetype =~ s/response$//; # make it compatible w/ navmaps - should move to that!!
       my ($value) = &Apache::lonnet::EXT('resource.'.$part.'.handgrade',$symb);
       $handgrade{$part} = ($value eq 'yes' ? 'yes' : 'no'); 
       if (!exists($responseType{$partid})) { $responseType{$partid}={}; }
       $responseType{$partid}->{$respid}=$responsetype;
       next if ($seen{$partid} > 0);
       $seen{$partid}++;
       push @partlist,$partid;
    }
       }
       return \@partlist,\%handgrade,\%responseType;
 }  }
   
 sub processGroup {  sub get_display_part {
   my ($request)  = shift;      my ($partID,$url,$symb)=@_;
   my $ctr        = 0;      if (!defined($symb) || $symb eq '') {
   my @stuchecked = (ref($ENV{'form.stuinfo'}) ? @{$ENV{'form.stuinfo'}}   $symb=$ENV{'form.symb'};
                            : ($ENV{'form.stuinfo'}));   if ($symb eq '') { $symb=&Apache::lonnet::symbread($url) }
   my $total      = scalar(@stuchecked)-1;      }
   if ($stuchecked[0] eq '') {      my $display=&Apache::lonnet::EXT('resource.'.$partID.'.display',$symb);
       &userError($request,'No student was selected for viewing/grading.');      if (defined($display) and $display ne '') {
       return;   $display.= " (<font color=\"#999900\">id $partID</font>)";
   }      } else {
   foreach (@stuchecked) {   $display=$partID;
       my ($sname,$sdom,$fullname) = split(/:/);      }
       $ENV{'form.student'} = $sname;      return $display;
       $ENV{'form.fullname'} = $fullname;  }
       &submission($request,$ctr,$total);  #--- Show resource title
       $ctr++;  #--- and parts and response type
   }  sub showResourceInfo {
   return 'The End';      my ($url,$probTitle,$checkboxes) = @_;
       my $col=3;
       if ($checkboxes) { $col=4; }
       my $result ='<table border="0">'.
    '<tr><td colspan="'.$col.'"><font size="+1"><b>'.&mt('Current Resource').': </b>'.
    $probTitle.'</font></td></tr>'."\n";
       my ($partlist,$handgrade,$responseType) = &response_type($url);
       my %resptype = ();
       my $hdgrade='no';
       my %partsseen;
       for my $part_resID (sort keys(%$handgrade)) {
    my $handgrade=$$handgrade{$part_resID};
    my ($partID,$resID) = split(/_/,$part_resID);
    my $responsetype = $responseType->{$partID}->{$resID};
    $hdgrade = $handgrade if ($handgrade eq 'yes');
    $result.='<tr>';
    if ($checkboxes) {
       if (exists($partsseen{$partID})) {
    $result.="<td>&nbsp;</td>";
       } else {
    $result.="<td><input type='checkbox' name='vPart' value='$partID' checked='on' /></td>";
       }
       $partsseen{$partID}=1;
    }
    my $display_part=&get_display_part($partID,$url);
    $result.='<td><b>Part: </b>'.$display_part.' <font color="#999999">'.
       $resID.'</font></td>'.
       '<td><b>Type: </b>'.$responsetype.'</td></tr>';
   #    '<td><b>Handgrade: </b>'.$handgrade.'</td></tr>';
       }
       $result.='</table>'."\n";
       return $result,$responseType,$hdgrade,$partlist,$handgrade;
 }  }
   
 sub userError {  
     my ($request, $reason, $step) = @_;  sub get_order {
     $request->print('<h3><font color="red">LON-CAPA User Error</font></h3><br />'."\n");      my ($partid,$respid,$symb,$uname,$udom)=@_;
     $request->print('<b>Reason: </b>'.$reason.'<br /><br />'."\n");      my (undef,undef,$url)=&Apache::lonnet::decode_symb($symb);
     $request->print('<b>Step: </b>'.($step ne '' ? $step : 'Use your browser back button to correct')      $url=&Apache::lonnet::clutter($url);
     .'<br /><br />'."\n");      my $subresult=&Apache::lonnet::ssi($url,
     return '';         ('grade_target' => 'analyze'),
          ('grade_domain' => $udom),
          ('grade_symb' => $symb),
          ('grade_courseid' => 
           $ENV{'request.course.id'}),
          ('grade_username' => $uname));
       (undef,$subresult)=split(/_HASH_REF__/,$subresult,2);
       my %analyze=&Apache::lonnet::str2hash($subresult);
       return ($analyze{"$partid.$respid.shown"});
   }
   #--- Clean response type for display
   #--- Currently filters option/rank/radiobutton/match/essay response types only.
   sub cleanRecord {
       my ($answer,$response,$symb,$partid,$respid,$record,$order,$version) = @_;
       my $grayFont = '<font color="#999999">';
       if ($response =~ /^(option|rank)$/) {
    my %answer=&Apache::lonnet::str2hash($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.$foil.'</font>&nbsp;</td>';
    }
    return '<blockquote><table border="1">'.
       '<tr valign="top"><td>Answer</td>'.$toprow.'</tr>'.
       '<tr valign="top"><td>'.$grayFont.'Option ID</font></td>'.
       $grayFont.$bottomrow.'</tr>'.'</table></blockquote>';
       } elsif ($response eq 'match') {
    my %answer=&Apache::lonnet::str2hash($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;</font></b></td>';
       } else {
    $toprow.='<td><i>'.$item.'&nbsp;</i></td>';
    $middlerow.='<td><i>'.$grayFont.$answer{$foil}.'&nbsp;</font></i></td>';
       }
       $bottomrow.='<td>'.$grayFont.$foil.'</font>&nbsp;</td>';
    }
    return '<blockquote><table border="1">'.
       '<tr valign="top"><td>Answer</td>'.$toprow.'</tr>'.
       '<tr valign="top"><td>'.$grayFont.'Item ID</font></td>'.
       $middlerow.'</tr>'.
       '<tr valign="top"><td>'.$grayFont.'Option ID</font></td>'.
       $bottomrow.'</tr>'.'</table></blockquote>';
       } elsif ($response eq 'radiobutton') {
    my %answer=&Apache::lonnet::str2hash($answer);
    my ($toprow,$bottomrow);
    my $correct=($order->[0])+1;
    for (my $i=1;$i<=$#$order;$i++) {
       my $foil=$order->[$i];
       if (exists($answer{$foil})) {
    if ($i == $correct) {
       $toprow.='<td><b>true</b></td>';
    } else {
       $toprow.='<td><i>true</i></td>';
    }
       } else {
    $toprow.='<td>false</td>';
       }
       $bottomrow.='<td>'.$grayFont.$foil.'</font>&nbsp;</td>';
    }
    return '<blockquote><table border="1">'.
       '<tr valign="top"><td>Answer</td>'.$toprow.'</tr>'.
       '<tr valign="top"><td>'.$grayFont.'Option ID</font></td>'.
       $grayFont.$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.
    }
    $answer =~ s-\n-<br />-g;
    return '<br /><br /><blockquote><tt>'.&keywords_highlight($answer).'</tt></blockquote>';
       }
       return $answer;
 }  }
   
 #FIXME - needs to handle multiple matches  #-- A couple of common js functions
 sub finduser {  sub commonJSfunctions {
   my ($name) = @_;      my $request = shift;
   my $domain = '';      $request->print(<<COMMONJSFUNCTIONS);
   if ( $Apache::grades::viewgrades eq 'F' ) {  <script type="text/javascript" language="javascript">
     my ($classlist) = &getclasslist('all','0');      function radioSelection(radioButton) {
     foreach ( sort(@{ $$classlist{'all'} }) ) {   var selection=null;
       my ($posname,$posdomain) = split(/:/);   if (radioButton.length > 1) {
       if ($posname =~ $name) { $name=$posname; $domain=$posdomain; last; }      for (var i=0; i<radioButton.length; i++) {
     }   if (radioButton[i].checked) {
     return ($name,$domain);      return radioButton[i].value;
   } else {   }
     return ($ENV{'user.name'},$ENV{'user.domain'});      }
   }   } 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;
    }
       }
   </script>
   COMMONJSFUNCTIONS
 }  }
   
   #--- Dumps the class list with usernames,list of sections,
   #--- section, ids and fullnames for each user.
 sub getclasslist {  sub getclasslist {
   my ($getsec,$hideexpired) = @_;      my ($getsec,$filterlist) = @_;
   my ($coursedomain,$coursenum) = split(/_/,$ENV{'request.course.id'});      $getsec = $getsec eq '' ? 'all' : $getsec;
   my %classlist=&Apache::lonnet::dump('classlist',$coursedomain,$coursenum);      my $classlist=&Apache::loncoursedata::get_classlist();
   my $now = time;      # Bail out if we were unable to get the classlist
   my (@holdsec,@sections);      return if (! defined($classlist));
   foreach my $student (keys(%classlist)) {      #
     my ($end,$start)=split(/:/,$classlist{$student});      my %sections;
     # still a student?      my %fullnames;
     if (($hideexpired) && ($end) && ($end < $now)) {      foreach my $student (keys(%$classlist)) {
       next;          my $end      = 
     }              $classlist->{$student}->[&Apache::loncoursedata::CL_END()];
     my ($unam,$udom) = split(/:/,$student,2);          my $start    = 
     my $section = &Apache::lonnet::usection($udom,$unam,$ENV{'request.course.id'});              $classlist->{$student}->[&Apache::loncoursedata::CL_START()];
     $section = ($section ne '-1' ? $section : 'no');          my $id       = 
     push @holdsec,$section;              $classlist->{$student}->[&Apache::loncoursedata::CL_ID()];
     push (@{ $classlist{$getsec} }, $student) if ($getsec eq 'all' || $getsec eq $section);          my $section  = 
   }              $classlist->{$student}->[&Apache::loncoursedata::CL_SECTION()];
   my %seen = ();          my $fullname = 
   foreach my $item (@holdsec) {              $classlist->{$student}->[&Apache::loncoursedata::CL_FULLNAME()];
       push (@sections, $item) unless $seen{$item}++;          my $status   = 
   }              $classlist->{$student}->[&Apache::loncoursedata::CL_STATUS()];
   return (\%classlist,\@sections);   # filter students according to status selected
    if ($filterlist && $ENV{'form.Status'} ne 'Any') {
       if ($ENV{'form.Status'} ne $status) {
    delete ($classlist->{$student});
    next;
       }
    }
    $section = ($section ne '' ? $section : 'none');
    if (&canview($section)) {
       if ($getsec eq 'all' || $getsec eq $section) {
    $sections{$section}++;
    $fullnames{$student}=$fullname;
       } else {
    delete($classlist->{$student});
       }
    } else {
       delete($classlist->{$student});
    }
       }
       my %seen = ();
       my @sections = sort(keys(%sections));
       return ($classlist,\@sections,\%fullnames);
 }  }
   
 sub getpartlist {  sub canmodify {
   my ($url) = @_;      my ($sec)=@_;
   my @parts =();      if ($perm{'mgr'}) {
   my (@metakeys) = split(/,/,&Apache::lonnet::metadata($url,'keys'));   if (!defined($perm{'mgr_section'})) {
   foreach my $key (@metakeys) {      # can modify whole class
     if ( $key =~ m/stores_([0-9]+)_.*/) {      return 1;
       push(@parts,$key);   } else {
       if ($sec eq $perm{'mgr_section'}) {
    #can modify the requested section
    return 1;
       } else {
    # can't modify the request section
    return 0;
       }
    }
     }      }
   }      #can't modify
   return @parts;      return 0;
 }  }
   
 sub viewstudentgrade {  sub canview {
   my ($url,$symb,$courseid,$student,@parts) = @_;      my ($sec)=@_;
   my $result ='';      if ($perm{'vgr'}) {
   my $cellclr = '"#ffffdd"';   if (!defined($perm{'vgr_section'})) {
   my ($username,$domain) = split(/:/,$student);      # can modify whole class
       return 1;
   my $fullname = &get_fullname($username,$domain);   } else {
   my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$username);      if ($sec eq $perm{'vgr_section'}) {
    #can modify the requested section
   $result.="<tr bgcolor=$cellclr><td>$username</td><td>$fullname</td><td align=\"middle\">$domain</td>\n";   return 1;
   foreach my $part (@parts) {      } else {
     my ($temp,$part,$type)=split(/_/,$part);   # can't modify the request section
     my $score=$record{"resource.$part.$type"};   return 0;
     if ($type eq 'awarded' || $type eq 'tries') {      }
       $result.='<td align="middle"><input type="text" name="GRADE.'.$student.'.'.$part.'.'.$type.   }
   '" value="'.$score.'" size="4" /></td>'."\n";  
     } elsif ($type eq 'solved') {  
       my ($status,$foo)=split(/_/,$score,2);  
       $result.="<td align=\"middle\"><select name=\"GRADE.$student.$part.$type\">\n";  
       my $optsel = '<option>correct</option><option>incorrect</option><option>excused</option>'.  
   '<option>ungraded</option><option>partial</option><option>nothing</option>'."\n";  
       $status = 'nothing' if ($status eq '');  
       $optsel =~ s/<option>$status/<option selected="on">$status/;  
       $result.=$optsel;  
       $result.="</select></td>\n";  
     }      }
   }      #can't modify
   $result.='<td></td></tr>';      return 0;
   return $result;  
 }  }
   
 #FIXME need to look at the metadata <stores> spec on what type of data to accept and provide an  #--- Retrieve the grade status of a student for all the parts
 #interface based on that, also do that to above function.  sub student_gradeStatus {
 sub setstudentgrade {      my ($url,$symb,$udom,$uname,$partlist) = @_;
   my ($url,$symb,$courseid,$student,@parts) = @_;      my %record     = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
   print "set student grade parts=@parts<br>";      my %partstatus = ();
   my $result ='';      foreach (@$partlist) {
   my ($stuname,$domain) = split(/:/,$student);   my ($status,undef)   = split(/_/,$record{"resource.$_.solved"},2);
   my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$stuname);   $status              = 'nothing' if ($status eq '');
   my %newrecord;   $partstatus{$_}      = $status;
    my $subkey           = "resource.$_.submitted_by";
   foreach my $part (@parts) {   $partstatus{$subkey} = $record{$subkey} if ($record{$subkey} ne '');
     my ($temp,$part,$type)=split(/_/,$part);  
     my $oldscore=$record{"resource.$part.$type"};  
     my $newscore=$ENV{"form.GRADE.$student.$part.$type"};  
     print "old=$oldscore:new=$newscore:<br>";  
     if ($type eq 'solved') {  
       my $update=0;  
       if ($newscore eq 'nothing' ) {  
  if ($oldscore ne '') {  
   $update=1;  
   $newscore = '';  
  }  
       } elsif ($oldscore !~ m/^$newscore/) {  
  $update=1;  
  $result.="Updating $stuname to $newscore<br />\n";  
  if ($newscore eq 'correct')   { $newscore = 'correct_by_override'; }  
  if ($newscore eq 'incorrect') { $newscore = 'incorrect_by_override'; }  
  if ($newscore eq 'excused')   { $newscore = 'excused'; }  
  if ($newscore eq 'ungraded')  { $newscore = 'ungraded_attempted'; }  
  if ($newscore eq 'partial')   { $newscore = 'correct_partially_by_override'; }  
       } else {  
  #$result.="$stuname:$part:$type:unchanged  $oldscore to $newscore:<br />\n";  
       }  
       if ($update) { $newrecord{"resource.$part.$type"}=$newscore; }  
     } else {  
       if ($oldscore ne $newscore) {  
  $newrecord{"resource.$part.$type"}=$newscore;  
  $result.="Updating $student"."'s status for $part.$type to $newscore<br />\n";  
       } else {  
  #$result.="$stuname:$part:$type:unchanged  $oldscore to $newscore:<br />\n";  
       }  
     }      }
   }      return %partstatus;
   if ( scalar(keys(%newrecord)) > 0 ) {  }
     $newrecord{'resource.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";  
 #    &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$stuname);  
   
     $result.="Stored away ".scalar(keys(%newrecord))." elements.<br />\n";  # hidden form and javascript that calls the form
   }  # Use by verifyscript and viewgrades
   return $result;  # Shows a student's view of problem and submission
   sub jscriptNform {
       my ($url,$symb) = @_;
       my $jscript='<script type="text/javascript" language="javascript">'."\n".
    '    function viewOneStudent(user,domain) {'."\n".
    ' document.onestudent.student.value = user;'."\n".
    ' document.onestudent.userdom.value = domain;'."\n".
    ' document.onestudent.submit();'."\n".
    '    }'."\n".
    '</script>'."\n";
       $jscript.= '<form action="/adm/grades" method="post" name="onestudent">'."\n".
    '<input type="hidden" name="symb"    value="'.$symb.'" />'."\n".
    '<input type="hidden" name="url"     value="'.$url.'" />'."\n".
    '<input type="hidden" name="saveState" value="'.$ENV{'form.saveState'}.'" />'."\n".
    '<input type="hidden" name="probTitle" value="'.$ENV{'form.probTitle'}.'" />'."\n".
    '<input type="hidden" name="Status"  value="'.$ENV{'form.Status'}.'" />'."\n".
    '<input type="hidden" name="command" value="submission" />'."\n".
    '<input type="hidden" name="student" value="" />'."\n".
    '<input type="hidden" name="userdom" value="" />'."\n".
    '</form>'."\n";
       return $jscript;
 }  }
   
   #------------------ End of general use routines --------------------
   
 #  #
 # --------------------------- show submissions of a student, option to grade --------  # Find most similar essay
 sub submission {  #
   my ($request,$counter,$total) = @_;  
   sub most_similar {
       my ($uname,$udom,$uessay)=@_;
   
   # ignore spaces and punctuation
   
       $uessay=~s/\W+/ /gs;
   
   # 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 $tkey (keys %oldessays) {
    my ($tname,$tdom,$tcrsid)=split(/\./,$tkey);
   # ... except the same student
           if (($tname ne $uname) || ($tdom ne $udom)) {
       my $tessay=$oldessays{$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;
                   $sessay=$oldessays{$tkey};
               }
           } 
       }
       if ($limit>0.6) {
          return ($sname,$sdom,$scrsid,$sessay,$limit);
       } else {
          return ('','','','',0);
       }
   }
   
   #-------------------------------------------------------------------
   
   #------------------------------------ Receipt Verification Routines
   #
   #--- Check whether a receipt number is valid.---
   sub verifyreceipt {
       my $request  = shift;
   
   if ($counter == 0) {      my $courseid = $ENV{'request.course.id'};
       $request->print(<<JAVASCRIPT);      my $receipt  = &Apache::lonnet::recprefix($courseid).'-'.
    $ENV{'form.receipt'};
       $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 '.
    $receipt.'</h3></font>'."\n".
    '<font size=+1><b>Resource: </b>'.$ENV{'form.probTitle'}.'</font><br><br>'."\n";
   
       my ($string,$contents,$matches) = ('','',0);
       my (undef,undef,$fullname) = &getclasslist('all','0');
       
       my $receiptparts=0;
       if ($ENV{"course.$courseid.receiptalg"} eq 'receipt2') { $receiptparts=1; }
       my $parts=['0'];
       if ($receiptparts) { ($parts)=&response_type($url,$symb); }
       foreach (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {
    my ($uname,$udom)=split(/\:/);
    foreach my $part (@$parts) {
       if ($receipt eq &Apache::lonnet::ireceipt($uname,$udom,$courseid,$symb,$part)) {
    $contents.='<tr bgcolor="#ffffe6"><td>&nbsp;'."\n".
       '<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
       '\')"; TARGET=_self>'.$$fullname{$_}.'</a>&nbsp;</td>'."\n".
       '<td>&nbsp;'.$uname.'&nbsp;</td>'.
       '<td>&nbsp;'.$udom.'&nbsp;</td>';
    if ($receiptparts) {
       $contents.='<td>&nbsp;'.$part.'&nbsp;</td>';
    }
    $contents.='</tr>'."\n";
   
    $matches++;
       }
    }
       }
       if ($matches == 0) {
    $string = $title.'No match found for the above receipt.';
       } else {
    $string = &jscriptNform($url,$symb).$title.
       'The above receipt matches the following student'.
       ($matches <= 1 ? '.' : 's.')."\n".
       '<table border="0"><tr><td bgcolor="#777777">'."\n".
       '<table border="0"><tr bgcolor="#e6ffff">'."\n".
       '<td><b>&nbsp;Fullname&nbsp;</b></td>'."\n".
       '<td><b>&nbsp;Username&nbsp;</b></td>'."\n".
       '<td><b>&nbsp;Domain&nbsp;</b></td>';
    if ($receiptparts) {
       $string.='<td>&nbsp;Problem Part&nbsp;</td>';
    }
    $string.='</tr>'."\n".$contents.
       '</table></td></tr></table>'."\n";
       }
       return $string.&show_grading_menu_form($symb,$url);
   }
   
   #--- This is called by a number of programs.
   #--- Called from the Grading Menu - View/Grade an individual student
   #--- Also called directly when one clicks on the subm button 
   #    on the problem page.
   sub listStudents {
       my ($request) = shift;
   
       my ($symb,$url) = &get_symb_and_url($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 $submitonly= $ENV{'form.submitonly'} eq '' ? 'all' : $ENV{'form.submitonly'};
   
       my $viewgrade = $ENV{'form.showgrading'} eq 'yes' ? 'View/Grade/Regrade' : 'View';
       $ENV{'form.probTitle'} = $ENV{'form.probTitle'} eq '' ? 
    &Apache::lonnet::gettitle($symb) : $ENV{'form.probTitle'};
   
       my $result='<h3><font color="#339933">&nbsp;'.$viewgrade.
    ' Submissions for a Student or a Group of Students</font></h3>';
   
       my ($table,undef,$hdgrade,$partlist,$handgrade) = &showResourceInfo($url,$ENV{'form.probTitle'},($ENV{'form.showgrading'} eq 'yes'));
   
       $request->print(<<LISTJAVASCRIPT);
   <script type="text/javascript" language="javascript">
       function checkSelect(checkBox) {
    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 Next button.");
       return false;
    }
    document.gradesub.submit();
       }
   
       function reLoadList(formname) {
    if (formname.saveStatusOld.value == pullDownSelection(formname.Status)) {return;}
    formname.command.value = 'submission';
    formname.submit();
       }
   </script>
   LISTJAVASCRIPT
   
       &commonJSfunctions($request);
       $request->print($result);
   
       my $checkhdgrade = ($ENV{'form.handgrade'} eq 'yes' && scalar(@$partlist) > 1 ) ? 'checked' : '';
       my $checklastsub = $checkhdgrade eq '' ? 'checked' : '';
       my $gradeTable='<form action="/adm/grades" method="post" name="gradesub">'.
    "\n".$table.
    '&nbsp;<b>View Problem Text: </b><input type="radio" name="vProb" value="no" checked="on" /> no '."\n".
    '<input type="radio" name="vProb" value="yes" /> one student '."\n".
    '<input type="radio" name="vProb" value="all" /> all students <br />'."\n".
    '&nbsp;<b>View Answer: </b><input type="radio" name="vAns" value="no"  /> no '."\n".
    '<input type="radio" name="vAns" value="yes" /> one student '."\n".
    '<input type="radio" name="vAns" value="all" checked="on" /> all students <br />'."\n".
    '&nbsp;<b>Submissions: </b>'."\n";
       if ($ENV{'form.handgrade'} eq 'yes' && scalar(@$partlist) > 1) {
    $gradeTable.='<input type="radio" name="lastSub" value="hdgrade" '.$checkhdgrade.' /> essay part only'."\n";
       }
   
       my $saveStatus = $ENV{'form.Status'} eq '' ? 'Active' : $ENV{'form.Status'};
       $ENV{'form.Status'} = $saveStatus;
   
       $gradeTable.='<input type="radio" name="lastSub" value="lastonly" '.$checklastsub.' /> last submission only'."\n".
    '<input type="radio" name="lastSub" value="last" /> last submission & parts info'."\n".
    '<input type="radio" name="lastSub" value="datesub" /> by dates and submissions'."\n".
    '<input type="radio" name="lastSub" value="all" /> all details'."\n".
    '<input type="hidden" name="section"     value="'.$getsec.'" />'."\n".
    '<input type="hidden" name="submitonly"  value="'.$submitonly.'" />'."\n".
    '<input type="hidden" name="handgrade"   value="'.$ENV{'form.handgrade'}.'" /><br />'."\n".
    '<input type="hidden" name="showgrading" value="'.$ENV{'form.showgrading'}.'" /><br />'."\n".
    '<input type="hidden" name="saveState"   value="'.$ENV{'form.saveState'}.'" />'."\n".
    '<input type="hidden" name="probTitle"   value="'.$ENV{'form.probTitle'}.'" />'."\n".
    '<input type="hidden" name="url"  value="'.$url.'" />'."\n".
    '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
    '<input type="hidden" name="saveStatusOld" value="'.$saveStatus.'" />'."\n";
   
       if (exists($ENV{'form.gradingMenu'}) && exists($ENV{'form.Status'})) {
    $gradeTable.='<input type="hidden" name="Status"   value="'.$ENV{'form.Status'}.'" />'."\n";
       } else {
    $gradeTable.='<b>Student Status:</b> '.
       &Apache::lonhtmlcommon::StatusOptions($saveStatus,undef,1,'javascript:reLoadList(this.form);').'<br />';
       }
   
       $gradeTable.='To '.lc($viewgrade).' 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.<br />'."\n".
    '<input type="hidden" name="command" value="processGroup" />'."\n";
       $gradeTable.='<input type="button" '."\n".
    'onClick="javascript:checkSelect(this.form.stuinfo);" '."\n".
    'value="Next->" />'."\n";
       $gradeTable.='<input type="checkbox" name="checkPlag" checked="on">Check For Plagiarism</input>';
       my (undef, undef, $fullname) = &getclasslist($getsec,'1');  
       $gradeTable.='<table border="0"><tr><td bgcolor="#777777">'.
    '<table border="0"><tr bgcolor="#e6ffff">';
       my $loop = 0;
       while ($loop < 2) {
    $gradeTable.='<td><b>&nbsp;No.</b>&nbsp;</td><td><b>&nbsp;Select&nbsp;</b></td>'.
       '<td>'.&nameUserString('header').'</td>';
    if ($ENV{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
       foreach (sort(@$partlist)) {
    my $display_part=&get_display_part((split(/_/))[0],$url,$symb);
    $gradeTable.='<td><b>&nbsp;Part: '.$display_part.
       ' Status&nbsp;</b></td>';
       }
    }
    $loop++;
   # $gradeTable.='<td></td>' if ($loop%2 ==1);
       }
       $gradeTable.='</tr>'."\n";
   
       my $ctr = 0;
       foreach my $student (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {
    my ($uname,$udom) = split(/:/,$student);
    my %status = ();
    if ($ENV{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
       (%status) =&student_gradeStatus($url,$symb,$udom,$uname,$partlist);
       my $submitted = 0;
       my $graded = 0;
       foreach (keys(%status)) {
    $submitted = 1 if ($status{$_} ne 'nothing');
    $graded = 1 if ($status{$_} !~ /^correct/);
   
    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' ||
     $submitonly eq 'incorrect'));
    }
   
    $ctr++;
    if ( $perm{'vgr'} eq 'F' ) {
       $gradeTable.='<tr bgcolor="#ffffe6">' if ($ctr%2 ==1);
       $gradeTable.='<td align="right">'.$ctr.'&nbsp;</td>'.
    '<td align="center"><input type=checkbox name="stuinfo" value="'.
    $student.':'.$$fullname{$student}.'&nbsp;"></td>'."\n".
    '<td>'.&nameUserString(undef,$$fullname{$student},$uname,$udom).'</td>'."\n";
   
       if ($ENV{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
    foreach (sort keys(%status)) {
       next if (/^resource.*?submitted_by$/);
       $gradeTable.='<td align="middle">&nbsp;'.$status{$_}.'&nbsp;</td>'."\n";
    }
       }
   #    $gradeTable.='<td></td>' if ($ctr%2 ==1);
       $gradeTable.='</tr>'."\n" if ($ctr%2 ==0);
    }
       }
       if ($ctr%2 ==1) {
    $gradeTable.='<td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td>';
       if ($ENV{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
    foreach (@$partlist) {
       $gradeTable.='<td>&nbsp;</td>';
    }
       }
    $gradeTable.='</tr>';
       }
   
       $gradeTable.='</table></td></tr></table>'.
    '<input type="button" '.
    'onClick="javascript:checkSelect(this.form.stuinfo);" '.
    'value="Next->" /></form>'."\n";
       if ($ctr == 0) {
    my $num_students=(scalar(keys(%$fullname)));
    if ($num_students eq 0) {
       $gradeTable='<br />&nbsp;<font color="red">There are no students currently enrolled.</font>';
    } else {
       my $submissions='submissions';
       if ($submitonly eq 'incorrect') { $submissions = 'incorrect submissions'; }
       if ($submitonly eq 'graded'   ) { $submissions = 'ungraded submissions'; }
       $gradeTable='<br />&nbsp;<font color="red">'.
    'No '.$submissions.' found for this resource for any students. ('.$num_students.
    ' students checked for '.$submissions.')</font><br />';
    }
       } elsif ($ctr == 1) {
    $gradeTable =~ s/type=checkbox/type=checkbox checked/;
       }
       $gradeTable.=&show_grading_menu_form($symb,$url);
       $request->print($gradeTable);
       return '';
   }
   
   #---- Called from the listStudents routine
   #     Displays the submissions for one student or a group of students
   sub processGroup {
       my ($request)  = shift;
       my $ctr        = 0;
       my @stuchecked = &Apache::loncommon::get_env_multiple('form.stuinfo');
       my $total      = scalar(@stuchecked)-1;
   
       foreach (@stuchecked) {
    my ($uname,$udom,$fullname) = split(/:/);
    $ENV{'form.student'}        = $uname;
    $ENV{'form.userdom'}        = $udom;
    $ENV{'form.fullname'}       = $fullname;
    &submission($request,$ctr,$total);
    $ctr++;
       }
       return '';
   }
   
   #------------------------------------------------------------------------------------
   #
   #-------------------------- Next few routines handles grading by student, essentially
   #                           handles essay response type problem/part
   #
   #--- Javascript to handle the submission page functionality ---
   sub sub_page_js {
       my $request = shift;
       $request->print(<<SUBJAVASCRIPT);
 <script type="text/javascript" language="javascript">  <script type="text/javascript" language="javascript">
   function updateRadio(radioButton,formtextbox,formsel,wgt) {      function updateRadio(formname,id,weight) {
      var pts = formtextbox.value;   var gradeBox = formname["GD_BOX"+id];
      var resetbox =false;   var radioButton = formname["RADVAL"+id];
      if (isNaN(pts) || pts < 0) {   var oldpts = formname["oldpts"+id].value;
  alert("A number equal or greater than 0 is expected. Entered value = "+pts);   var pts = checkSolved(formname,id) == 'update' ? gradeBox.value : oldpts;
    gradeBox.value = pts;
    var resetbox = false;
    if (isNaN(pts) || pts < 0) {
       alert("A number equal or greater than 0 is expected. Entered value = "+pts);
       for (var i=0; i<radioButton.length; i++) {
    if (radioButton[i].checked) {
       gradeBox.value = i;
       resetbox = true;
    }
       }
       if (!resetbox) {
    formtextbox.value = "";
       }
       return;
    }
   
    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;
       }
    }
   
  for (var i=0; i<radioButton.length; i++) {   for (var i=0; i<radioButton.length; i++) {
    if (radioButton[i].checked) {      radioButton[i].checked=false;
       formtextbox.value = i;      if (pts == i && pts != "") {
       resetbox = true;   radioButton[i].checked=true;
    }      }
  }   }
  if (!resetbox) {   updateSelect(formname,id);
    formtextbox.value = "";   formname["stores"+id].value = "0";
       }
   
       function writeBox(formname,id,pts) {
    var gradeBox = formname["GD_BOX"+id];
    if (checkSolved(formname,id) == 'update') {
       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;   return;
     }      }
   
     for (var i=0; i<radioButton.length; i++) {      function clearRadBox(formname,id) {
  radioButton[i].checked=false;   if (checkSolved(formname,id) == 'noupdate') {
  if (pts == i) {      updateSelect(formname,id);
    radioButton[i].checked=true;      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;
     }      }
     updateSelect(formsel,pts,wgt);  
   }  
   
   function writeBox(formrad,formsel,pts,wgt) {      function checkSolved(formname,id) {
     formrad.value = pts;   if (formname["solved"+id].value == "correct_by_student" && formname.overRideScore.value == 'no') {
     updateSelect(formsel,pts,wgt);      var reply = confirm("This problem has been graded correct by the computer. Do you want to change the score?");
     return;      if (!reply) {return "noupdate";}
   }      formname.overRideScore.value = 'yes';
    }
    return "update";
       }
   
   function updateSelect(formsel,pts,wgt) {      function updateSelect(formname,id) {
     if (pts == 0) {   formname["GD_SEL"+id][0].selected = true;
       formsel[1].selected = true;   return;
     }      }
     if (pts > 0 && pts < wgt) {  
       formsel[4].selected = true;  //=========== Check that a point is assigned for all the parts  ============
       function checksubmit(formname,val,total,parttot) {
    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;
       }
    }
       }
       
    }
       }
       
    }
    if (val == "Grade Student") {
       formname.showgrading.value = "yes";
       if (formname.Status.value == "") {
    formname.Status.value = "Active";
       }
       formname.studentNo.value = total;
    }
    formname.submit();
     }      }
     if (pts == wgt) {  
       formsel[0].selected = true;  //======= Check that a score is assigned for all the problems (page/sequence grading only) =========
       function checkSubmitPage(formname,total) {
    noscore = new Array(100);
    var ptr = 0;
    for (i=1;i<total;i++) {
       var partid = formname["q_"+i].value;
       if (formname["GD_SEL"+i+"_"+partid][0].selected) {
    var points = formname["GD_BOX"+i+"_"+partid].value;
    var status = formname["solved"+i+"_"+partid].value;
    if (points == "" && status != "correct_by_student") {
       noscore[ptr] = i;
       ptr++;
    }
       }
    }
    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();
       }
   </script>
   SUBJAVASCRIPT
   }
   
   #--- javascript for essay type problem --
   sub sub_page_kw_js {
       my $request = shift;
       my $iconpath = $request->dir_config('lonIconsURL');
       &commonJSfunctions($request);
       my $nothing= &Apache::lonhtmlcommon::javascript_nothing();
       $request->print(<<SUBJAVASCRIPT);
   <script type="text/javascript" language="javascript">
   
   //===================== Show list of keywords ====================
     function keywords(formname) {
       var nret = prompt("Keywords list, separated by a space. Add/delete to list if desired.",formname.keywords.value);
       if (nret==null) return;
       formname.keywords.value = nret;
   
       if (formname.keywords.value != "") {
    formname.refresh.value = "on";
    formname.submit();
     }      }
     return;      return;
   }    }
   
   function keywords(keyform) {  //===================== Script to view submitted by ==================
     var keywds = keyform.value;    function viewSubmitter(submitter) {
     var nret = prompt("Keywords list, separate by a space or comma. Add/delete to list if desired.",keywds);      document.SCORE.refresh.value = "on";
     if (nret==null) return;      document.SCORE.NCT.value = "1";
     keyform.value = nret;      document.SCORE.unamedom0.value = submitter;
       document.SCORE.submit();
     return;      return;
   }    }
   
   function addmsg(msgform) {  //===================== Script to add keyword(s) ==================
     var msg  = msgform.value;    function getSel() {
     var nret = prompt("Enter the message you wish to send to the student.",msg);      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;      if (nret==null) return;
     msgform.value = nret;      document.SCORE.keywords.value = document.SCORE.keywords.value+" "+nret;
       if (document.SCORE.keywords.value != "") {
    document.SCORE.refresh.value = "on";
    document.SCORE.submit();
       }
     return;      return;
   }    }
   
   function savedmsg(msgform) {  //====================== Script for composing message ==============
     var Nmsg  = msgform.value;     // preload images
     var nret = prompt("Number of saved messages = ",Nmsg);     img1 = new Image();
     if (nret==null) return;     img1.src = "$iconpath/mailbkgrd.gif";
     msgform.value = nret;     img2 = new Image();
      img2.src = "$iconpath/mailto.gif";
   
     function msgCenter(msgform,usrctr,fullname) {
       var Nmsg  = msgform.savemsgN.value;
       savedMsgHeader(Nmsg,usrctr,fullname);
       var subject = msgform.msgsub.value;
       var msgchk = document.SCORE["includemsg"+usrctr].value;
       re = /msgsub/;
       var shwsel = "";
       if (re.test(msgchk)) { shwsel = "checked" }
       subject = (document.SCORE.shownSub.value == 0 ? checkEntities(subject) : subject);
       displaySubject(checkEntities(subject),shwsel);
       for (var i=1; i<=Nmsg; i++) {
    var testmsg = "savemsg"+i+",";
    re = new RegExp(testmsg,"g");
    shwsel = "";
    if (re.test(msgchk)) { shwsel = "checked" }
    var message = document.SCORE["savemsg"+i].value;
    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 = document.SCORE["newmsg"+usrctr].value;
       shwsel = "";
       re = /newmsg/;
       if (re.test(msgchk)) { shwsel = "checked" }
       newMsg(newmsg,shwsel);
       msgTail(); 
     return;      return;
   }    }
   
 </script>    function checkEntities(strx) {
 JAVASCRIPT      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) {
       var height = 70*Nmsg+250;
       var scrollbar = "no";
       if (height > 600) {
    height = 600;
    scrollbar = "yes";
       }
       var xpos = (screen.width-600)/2;
       xpos = (xpos < 0) ? '0' : xpos;
       var ypos = (screen.height-height)/2-30;
       ypos = (ypos < 0) ? '0' : ypos;
   
       pWin = window.open('', 'MessageCenter', 'resizable=yes,toolbar=no,location=no,scrollbars='+scrollbar+',screenx='+xpos+',screeny='+ypos+',width=600,height='+height);
       pWin.focus();
       pDoc = pWin.document;
       pDoc.open($nothing,'replace');
       pDoc.write("<html><head>");
       pDoc.write("<title>Message Central</title>");
   
       pDoc.write("<script language=javascript>");
       pDoc.write("function checkInput() {");
       pDoc.write("  opener.document.SCORE.msgsub.value = opener.checkEntities(document.msgcenter.msgsub.value);");
       pDoc.write("  var nmsg   = opener.document.SCORE.savemsgN.value;");
       pDoc.write("  var usrctr = document.msgcenter.usrctr.value;");
       pDoc.write("  var newval = opener.document.SCORE[\\"newmsg\\"+usrctr];");
       pDoc.write("  newval.value = opener.checkEntities(document.msgcenter.newmsg.value);");
   
       pDoc.write("  var msgchk = \\"\\";");
       pDoc.write("  if (document.msgcenter.subchk.checked) {");
       pDoc.write("     msgchk = \\"msgsub,\\";");
       pDoc.write("  }");
       pDoc.write("  var includemsg = 0;");
       pDoc.write("  for (var i=1; i<=nmsg; i++) {");
       pDoc.write("      var opnmsg = opener.document.SCORE[\\"savemsg\\"+i];");
       pDoc.write("      var frmmsg = document.msgcenter[\\"msg\\"+i];");
       pDoc.write("      opnmsg.value = opener.checkEntities(frmmsg.value);");
       pDoc.write("      var showflg = opener.document.SCORE[\\"shownOnce\\"+i];");
       pDoc.write("      showflg.value = \\"1\\";");
       pDoc.write("      var chkbox = document.msgcenter[\\"msgn\\"+i];");
       pDoc.write("      if (chkbox.checked) {");
       pDoc.write("         msgchk += \\"savemsg\\"+i+\\",\\";");
       pDoc.write("         includemsg = 1;");
       pDoc.write("      }");
       pDoc.write("  }");
       pDoc.write("  if (document.msgcenter.newmsgchk.checked) {");
       pDoc.write("     msgchk += \\"newmsg\\"+usrctr;");
       pDoc.write("     includemsg = 1;");
       pDoc.write("  }");
       pDoc.write("  imgformname = opener.document.SCORE[\\"mailicon\\"+usrctr];");
       pDoc.write("  imgformname.src = \\"$iconpath/\\"+((includemsg) ? \\"mailto.gif\\" : \\"mailbkgrd.gif\\");");
       pDoc.write("  var includemsg = opener.document.SCORE[\\"includemsg\\"+usrctr];");
       pDoc.write("  includemsg.value = msgchk;");
   
       pDoc.write("  self.close()");
   
       pDoc.write("}");
   
       pDoc.write("<");
       pDoc.write("/script>");
   
       pDoc.write("</head><body bgcolor=white>");
   
       pDoc.write("<form action=\\"inactive\\" name=\\"msgcenter\\">");
       pDoc.write("<input value=\\""+usrctr+"\\" name=\\"usrctr\\" type=\\"hidden\\">");
       pDoc.write("<font color=\\"green\\" size=+1>&nbsp;Compose Message for \"+fullname+\"</font><br><br>");
   
       pDoc.write("<table border=0 width=100%><tr><td bgcolor=\\"#777777\\">");
       pDoc.write("<table border=0 width=100%><tr bgcolor=\\"#ddffff\\">");
       pDoc.write("<td><b>Type</b></td><td><b>Include</b></td><td><b>Message</td></tr>");
   }
       function displaySubject(msg,shwsel) {
       pDoc = pWin.document;
       pDoc.write("<tr bgcolor=\\"#ffffdd\\">");
       pDoc.write("<td>Subject</td>");
       pDoc.write("<td align=\\"center\\"><input name=\\"subchk\\" type=\\"checkbox\\"" +shwsel+"></td>");
       pDoc.write("<td><input name=\\"msgsub\\" type=\\"text\\" value=\\""+msg+"\\"size=\\"60\\" maxlength=\\"80\\"></td></tr>");
   }
   
     function displaySavedMsg(ctr,msg,shwsel) {
       pDoc = pWin.document;
       pDoc.write("<tr bgcolor=\\"#ffffdd\\">");
       pDoc.write("<td align=\\"center\\">"+ctr+"</td>");
       pDoc.write("<td align=\\"center\\"><input name=\\"msgn"+ctr+"\\" type=\\"checkbox\\"" +shwsel+"></td>");
       pDoc.write("<td><textarea name=\\"msg"+ctr+"\\" cols=\\"60\\" rows=\\"3\\">"+msg+"</textarea></td></tr>");
   }
   
     function newMsg(newmsg,shwsel) {
       pDoc = pWin.document;
       pDoc.write("<tr bgcolor=\\"#ffffdd\\">");
       pDoc.write("<td align=\\"center\\">New</td>");
       pDoc.write("<td align=\\"center\\"><input name=\\"newmsgchk\\" type=\\"checkbox\\"" +shwsel+"></td>");
       pDoc.write("<td><textarea name=\\"newmsg\\" cols=\\"60\\" rows=\\"3\\" onchange=\\"javascript:this.form.newmsgchk.checked=true\\" >"+newmsg+"</textarea></td></tr>");
 }  }
   (my $url=$ENV{'form.url'})=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;  
   if ($ENV{'form.student'} eq '') { &moreinfo($request,'Need student login id'); return ''; }    function msgTail() {
   my ($uname,$udom) = &finduser($ENV{'form.student'});      pDoc = pWin.document;
   if ($uname eq '') { &moreinfo($request,'Unable to find student'); return ''; }      pDoc.write("</table>");
       pDoc.write("</td></tr></table>&nbsp;");
   my $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url)));      pDoc.write("<input type=\\"button\\" value=\\"Save\\" onClick=\\"javascript:checkInput()\\">&nbsp;&nbsp;");
   if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }      pDoc.write("<input type=\\"button\\" value=\\"Cancel\\" onClick=\\"self.close()\\"><br><br>");
   my $last = ($ENV{'form.lastSub'} eq 'last' ? 'last' : '');      pDoc.write("</form>");
 #      pDoc.write("</body></html>");
 # header info      pDoc.close();
   if ($counter == 0) {  }
       $request->print('<h2><font color="#339933">Submission Record</font></h2>');  
   //====================== Script for keyword highlight options ==============
     function kwhighlight() {
       var kwclr    = document.SCORE.kwclr.value;
       var kwsize   = document.SCORE.kwsize.value;
       var kwstyle  = document.SCORE.kwstyle.value;
       var redsel = "";
       var grnsel = "";
       var blusel = "";
       if (kwclr=="red")   {var redsel="checked"};
       if (kwclr=="green") {var grnsel="checked"};
       if (kwclr=="blue")  {var blusel="checked"};
       var sznsel = "";
       var sz1sel = "";
       var sz2sel = "";
       if (kwsize=="0")  {var sznsel="checked"};
       if (kwsize=="+1") {var sz1sel="checked"};
       if (kwsize=="+2") {var sz2sel="checked"};
       var synsel = "";
       var syisel = "";
       var sybsel = "";
       if (kwstyle=="")    {var synsel="checked"};
       if (kwstyle=="<i>") {var syisel="checked"};
       if (kwstyle=="<b>") {var sybsel="checked"};
       highlightCentral();
       highlightbody('red','red',redsel,'0','normal',sznsel,'','normal',synsel);
       highlightbody('green','green',grnsel,'+1','+1',sz1sel,'<i>','italic',syisel);
       highlightbody('blue','blue',blusel,'+2','+2',sz2sel,'<b>','bold',sybsel);
       highlightend();
       return;
   }    }
   
 #    function highlightCentral() {
 # option to display problem, only once else it cause problems with the form later since the problem has a form.  //    if (window.hwdWin) window.hwdWin.close();
   if ($ENV{'form.vProb'} eq 'yes' && $counter == 0) {      var xpos = (screen.width-400)/2;
       my $rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,      xpos = (xpos < 0) ? '0' : xpos;
    $ENV{'request.course.id'});      var ypos = (screen.height-330)/2-30;
       my $companswer=&Apache::loncommon::get_student_answers($symb,$uname,$udom,      ypos = (ypos < 0) ? '0' : ypos;
  $ENV{'request.course.id'});  
       my $result.='<table border="0" width="100%"><tr><td bgcolor="#777777">';      hwdWin = window.open('', 'KeywordHighlightCentral', 'resizeable=yes,toolbar=no,location=no,scrollbars=no,width=400,height=300,screenx='+xpos+',screeny='+ypos);
       $result.='<table border="0" width="100%"><tr><td bgcolor="#e6ffff">';      hwdWin.focus();
       $result.='<b>Student\'s view of the problem</b></td></tr><tr><td bgcolor="#ffffff">'.$rendered.'<br />';      var hDoc = hwdWin.document;
       $result.='<b>Correct answer:</b><br />'.$companswer;      hDoc.open($nothing,'replace');
       $result.='</td></tr></table>';      hDoc.write("<html><head>");
       $result.='</td></tr></table><br />';      hDoc.write("<title>Highlight Central</title>");
       $request->print($result);  
       hDoc.write("<script language=javascript>");
       hDoc.write("function updateChoice(flag) {");
       hDoc.write("  opener.document.SCORE.kwclr.value = opener.radioSelection(document.hlCenter.kwdclr);");
       hDoc.write("  opener.document.SCORE.kwsize.value = opener.radioSelection(document.hlCenter.kwdsize);");
       hDoc.write("  opener.document.SCORE.kwstyle.value = opener.radioSelection(document.hlCenter.kwdstyle);");
       hDoc.write("  opener.document.SCORE.refresh.value = \\"on\\";");
       hDoc.write("  if (opener.document.SCORE.keywords.value!=\\"\\"){");
       hDoc.write("     opener.document.SCORE.submit();");
       hDoc.write("  }");
       hDoc.write("  self.close()");
       hDoc.write("}");
   
       hDoc.write("<");
       hDoc.write("/script>");
   
       hDoc.write("</head><body bgcolor=white>");
   
       hDoc.write("<form action=\\"inactive\\" name=\\"hlCenter\\">");
       hDoc.write("<font color=\\"green\\" size=+1>&nbsp;Keyword Highlight Options</font><br><br>");
   
       hDoc.write("<table border=0 width=100%><tr><td bgcolor=\\"#777777\\">");
       hDoc.write("<table border=0 width=100%><tr bgcolor=\\"#ddffff\\">");
       hDoc.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) { 
       var hDoc = hwdWin.document;
       hDoc.write("<tr bgcolor=\\"#ffffdd\\">");
       hDoc.write("<td align=\\"left\\">");
       hDoc.write("<input name=\\"kwdclr\\" type=\\"radio\\" value=\\""+clrval+"\\" "+clrsel+">&nbsp;"+clrtxt+"</td>");
       hDoc.write("<td align=\\"left\\">");
       hDoc.write("<input name=\\"kwdsize\\" type=\\"radio\\" value=\\""+szval+"\\" "+szsel+">&nbsp;"+sztxt+"</td>");
       hDoc.write("<td align=\\"left\\">");
       hDoc.write("<input name=\\"kwdstyle\\" type=\\"radio\\" value=\\""+syval+"\\" "+sysel+">&nbsp;"+sytxt+"</td>");
       hDoc.write("</tr>");
     }
   
     function highlightend() { 
       var hDoc = hwdWin.document;
       hDoc.write("</table>");
       hDoc.write("</td></tr></table>&nbsp;");
       hDoc.write("<input type=\\"button\\" value=\\"Save\\" onClick=\\"javascript:updateChoice(1)\\">&nbsp;&nbsp;");
       hDoc.write("<input type=\\"button\\" value=\\"Cancel\\" onClick=\\"self.close()\\"><br><br>");
       hDoc.write("</form>");
       hDoc.write("</body></html>");
       hDoc.close();
   }    }
   
   </script>
   SUBJAVASCRIPT
   }
   
   #--- 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 $checkIcon = '<img src="'.$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 ? '(problem weight)' : 
     '<font color="red">problem weight assigned by computer</font>');
       $wgt       = ($wgt > 0 ? $wgt : '1');
       my $score  = ($$record{'resource.'.$partid.'.awarded'} eq '' ?
     '' : $$record{'resource.'.$partid.'.awarded'}*$wgt);
       my $result='<input type="hidden" name="WGT'.$counter.'_'.$partid.'" value="'.$wgt.'" />'."\n";
   
       my $display_part=&get_display_part($partid,undef,$symb);
       $result.='<table border="0"><tr><td>'.
    '<b>Part: </b>'.$display_part.' <b>Points: </b></td><td>'."\n";
   
       my $ctr = 0;
       $result.='<table border="0"><tr>'."\n";  # display radio buttons in a nice table 10 across
       while ($ctr<=$wgt) {
    $result.= '<td><nobr><input type="radio" name="RADVAL'.$counter.'_'.$partid.'" '.
       'onclick="javascript:writeBox(this.form,\''.$counter.'_'.$partid.'\','.
       $ctr.')" value="'.$ctr.'" '.
       ($score eq $ctr ? 'checked':'').' /> '.$ctr."</nobr></td>\n";
    $result.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');
    $ctr++;
       }
       $result.='</tr></table>';
   
       $result.='</td><td>&nbsp;<b>or</b>&nbsp;</td>'."\n";
       $result.='<td><input type="text" name="GD_BOX'.$counter.'_'.$partid.'"'.
    ($score ne ''? ' value = "'.$score.'"':'').' size="4" '.
    'onChange="javascript:updateRadio(this.form,\''.$counter.'_'.$partid.'\','.
    $wgt.')" /></td>'."\n";
       $result.='<td>/'.$wgt.' '.$wgtmsg.
    ($$record{'resource.'.$partid.'.solved'} eq 'correct_by_student' ? '&nbsp;'.$checkIcon : '').
    ' </td><td>'."\n";
   
       $result.='<select name="GD_SEL'.$counter.'_'.$partid.'" '.
    'onChange="javascript:clearRadBox(this.form,\''.$counter.'_'.$partid.'\')" >'."\n";
       if ($$record{'resource.'.$partid.'.solved'} eq 'excused') {
    $result.='<option> </option>'.
       '<option selected="on">excused</option>';
       } else {
    $result.='<option selected="on"> </option>'.
       '<option>excused</option>';
       }
       $result.='<option>reset status</option></select>'."\n";
       $result.="&nbsp&nbsp\n";
       $result.='<input type="hidden" name="stores'.$counter.'_'.$partid.'" value="" />'."\n".
    '<input type="hidden" name="oldpts'.$counter.'_'.$partid.'" value="'.$score.'" />'."\n".
    '<input type="hidden" name="solved'.$counter.'_'.$partid.'" value="'.
    $$record{'resource.'.$partid.'.solved'}.'" />'."\n";
       $result.='</td></tr></table>'."\n";
       return $result;
   }
   
   sub show_problem {
       my ($request,$symb,$uname,$udom,$removeform,$viewon,$mode) = @_;
       my $rendered;
       if ($mode eq 'both' or $mode eq 'text') {
    $rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,
        $ENV{'request.course.id'});
       }
       if ($removeform) {
    $rendered=~s|<form(.*?)>||g;
    $rendered=~s|</form>||g;
    $rendered=~s|name="submit"|name="would_have_been_submit"|g;
       }
       my $companswer;
       if ($mode eq 'both' or $mode eq 'answer') {
    $companswer=&Apache::loncommon::get_student_answers($symb,$uname,$udom,
       $ENV{'request.course.id'});
       }
       if ($removeform) {
    $companswer=~s|<form(.*?)>||g;
    $companswer=~s|</form>||g;
    $companswer=~s|name="submit"|name="would_have_been_submit"|g;
       }
       my $result.='<table border="0" width="100%"><tr><td bgcolor="#777777">';
       $result.='<table border="0" width="100%">';
       if ($viewon) {
    $result.='<tr><td bgcolor="#e6ffff"><b> ';
    if ($mode eq 'both' or $mode eq 'text') {
       $result.='View of the problem - ';
    } else {
       $result.='Correct answer: ';
    }
    $result.=$ENV{'form.fullname'}.'</b></td></tr>';
       }
       if ($mode eq 'both') {
    $result.='<tr><td bgcolor="#ffffff">'.$rendered.'<br />';
    $result.='<b>Correct answer:</b><br />'.$companswer;
       } elsif ($mode eq 'text') {
    $result.='<tr><td bgcolor="#ffffff">'.$rendered;
       } elsif ($mode eq 'answer') {
    $result.='<tr><td bgcolor="#ffffff">'.$companswer;
       }
       $result.='</td></tr></table>';
       $result.='</td></tr></table><br />';
       return $result;
   }
   
   # --------------------------- show submissions of a student, option to grade 
   sub submission {
       my ($request,$counter,$total) = @_;
   
       (my $url=$ENV{'form.url'})=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
       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'});
       $ENV{'form.fullname'} = &get_fullname ($uname,$udom) if $ENV{'form.fullname'} eq '';
   
       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 (!&canview($usec)) {
    $request->print('<font color="red">Unable to view requested student.('.
    $uname.$udom.$usec.$ENV{'request.course.id'}.')</font>');
    $request->print(&show_grading_menu_form($symb,$url));
    return;
       }
   
       if (!$ENV{'form.lastSub'}) { $ENV{'form.lastSub'} = 'datesub'; }
       if (!$ENV{'form.vProb'}) { $ENV{'form.vProb'} = 'yes'; }
       if (!$ENV{'form.vAns'}) { $ENV{'form.vAns'} = 'yes'; }
       my $last = ($ENV{'form.lastSub'} eq 'last' ? 'last' : '');
       my $checkIcon = '<img src="'.$request->dir_config('lonIconsURL').
    '/check.gif" height="16" border="0" />';
   
       # header info
       if ($counter == 0) {
    &sub_page_js($request);
    &sub_page_kw_js($request) if ($ENV{'form.handgrade'} eq 'yes');
    $ENV{'form.probTitle'} = $ENV{'form.probTitle'} eq '' ? 
       &Apache::lonnet::gettitle($symb) : $ENV{'form.probTitle'};
   
    $request->print('<h3>&nbsp;<font color="#339933">Submission Record</font></h3>'."\n".
    '<font size=+1>&nbsp;<b>Resource: </b>'.$ENV{'form.probTitle'}.'</font>'."\n");
   
    if ($ENV{'form.handgrade'} eq 'no') {
       my $checkMark='<br /><br />&nbsp;<b>Note:</b> Part(s) graded correct by the computer is marked with a '.
    $checkIcon.' symbol.'."\n";
       $request->print($checkMark);
    }
   
    # option to display problem, only once else it cause problems 
           # with the form later since the problem has a form.
    if ($ENV{'form.vProb'} eq 'yes' or $ENV{'form.vAns'} eq 'yes') {
       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';
       }
       $request->print(&show_problem($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 = ();
    if ($ENV{'form.kwclr'} eq '' && $ENV{'form.handgrade'} eq 'yes') {
       %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.msgsub'}   = $keyhash{$symb.'_subject'} ne '' ? 
    $keyhash{$symb.'_subject'} : $ENV{'form.probTitle'};
       $ENV{'form.savemsgN'} = $keyhash{$symb.'_savemsgN'} ne '' ? $keyhash{$symb.'_savemsgN'} : '0';
    }
    my $overRideScore = $ENV{'form.overRideScore'} eq '' ? 'no' : $ENV{'form.overRideScore'};
   
    $request->print('<form action="/adm/grades" method="post" name="SCORE">'."\n".
    '<input type="hidden" name="command"    value="handgrade" />'."\n".
    '<input type="hidden" name="saveState"  value="'.$ENV{'form.saveState'}.'" />'."\n".
    '<input type="hidden" name="Status"     value="'.$ENV{'form.Status'}.'" />'."\n".
    '<input type="hidden" name="overRideScore" value="'.$overRideScore.'" />'."\n".
    '<input type="hidden" name="probTitle"  value="'.$ENV{'form.probTitle'}.'" />'."\n".
    '<input type="hidden" name="refresh"    value="off" />'."\n".
    '<input type="hidden" name="studentNo"  value="" />'."\n".
    '<input type="hidden" name="gradeOpt"   value="" />'."\n".
    '<input type="hidden" name="symb"       value="'.$symb.'" />'."\n".
    '<input type="hidden" name="url"        value="'.$url.'" />'."\n".
    '<input type="hidden" name="showgrading" value="'.$ENV{'form.showgrading'}.'" />'."\n".
    '<input type="hidden" name="vProb"      value="'.$ENV{'form.vProb'}.'" />'."\n".
    '<input type="hidden" name="vAns"       value="'.$ENV{'form.vAns'}.'" />'."\n".
    '<input type="hidden" name="lastSub"    value="'.$ENV{'form.lastSub'}.'" />'."\n".
    '<input type="hidden" name="section"    value="'.$ENV{'form.section'}.'">'."\n".
    '<input type="hidden" name="submitonly" value="'.$ENV{'form.submitonly'}.'">'."\n".
    '<input type="hidden" name="handgrade"  value="'.$ENV{'form.handgrade'}.'">'."\n".
    '<input type="hidden" name="NCT"'.
    ' value="'.($ENV{'form.NTSTU'} ne '' ? $ENV{'form.NTSTU'} : $total+1).'" />'."\n");
    if ($ENV{'form.handgrade'} eq 'yes') {
       $request->print('<input type="hidden" name="keywords" value="'.$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="'.$ENV{'form.kwstyle'}.'" />'."\n".
       '<input type="hidden" name="msgsub"   value="'.$ENV{'form.msgsub'}.'" />'."\n".
       '<input type="hidden" name="shownSub" value="0" />'."\n".
       '<input type="hidden" name="savemsgN" value="'.$ENV{'form.savemsgN'}.'" />'."\n");
       foreach my $partid (&Apache::loncommon::get_env_multiple('form.vPart')) {
    $request->print('<input type="hidden" name="vPart" value="'.$partid.'" />'."\n");
       }
    }
   
    my ($cts,$prnmsg) = (1,'');
    while ($cts <= $ENV{'form.savemsgN'}) {
       $prnmsg.='<input type="hidden" name="savemsg'.$cts.'" value="'.
    (!exists($keyhash{$symb.'_savemsg'.$cts}) ? 
    &Apache::lonfeedback::clear_out_html($ENV{'form.savemsg'.$cts}) :
    &Apache::lonfeedback::clear_out_html($keyhash{$symb.'_savemsg'.$cts})).
    '" />'."\n".
    '<input type="hidden" name="shownOnce'.$cts.'" value="0" />'."\n";
       $cts++;
    }
    $request->print($prnmsg);
   
    if ($ENV{'form.handgrade'} eq 'yes' && $ENV{'form.showgrading'} eq 'yes') {
 #  #
 # beginning of form  # Print out the keyword options line
   if ($counter == 0) {  #
       my %keyhash = &Apache::lonnet::get      $request->print(<<KEYWORDS);
                 ('nohist_handgrade',[$symb.'_keywords'],  &nbsp;<b>Keyword Options:</b>&nbsp;
                  $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},  <a href="javascript:keywords(document.SCORE)"; TARGET=_self>List</a>&nbsp; &nbsp;
  $ENV{'course.'.$ENV{'request.course.id'}.'.num'});  <a href="#" onMouseDown="javascript:getSel(); return false"
    CLASS="page">Paste Selection to List</a>&nbsp; &nbsp;
       $request->print('<form action="/adm/grades" method="post" name="SCORE">'."\n".  <a href="javascript:kwhighlight()"; TARGET=_self>Highlight Attribute</a><br /><br />
       '<input type="hidden" name="symb"       value="'.$symb.'" />'."\n".  
       '<input type="hidden" name="url"        value="'.$url.'" />'."\n".  
       '<input type="hidden" name="vProb"      value="'.$ENV{'form.vProb'}.'" />'."\n".  
       '<input type="hidden" name="lastSub"    value="'.$last.'" />'."\n".  
       '<input type="hidden" name="section"    value="'.$ENV{'form.section'}.'">'."\n".  
       '<input type="hidden" name="submitonly" value="'.$ENV{'form.submitonly'}.'">'."\n".  
       '<input type="hidden" name="response"   value="'.$ENV{'form.response'}.'">'."\n".  
       '<input type="hidden" name="handgrade"  value="'.$ENV{'form.handgrade'}.'">'."\n".  
       '<input type="hidden" name="command"    value="handgrade" />'."\n".  
       '<input type="hidden" name="keywords"   value="'.$keyhash{$symb.'_keywords'}.'" />'."\n".  
       '<input type="hidden" name="addmsg"     value="" />'."\n".  
       '<input type="hidden" name="savemsgN"   value="3" />'."\n".  
       '<input type="hidden" name="savemsg0"   value="Good Job!" />'."\n".  
       '<input type="hidden" name="savemsg1"   value="Needs a better explanation." />'."\n".  
       '<input type="hidden" name="savemsg2"   value="Read the book before submitting such garbagge!" />'."\n".  
       '<input type="hidden" name="NCT"'.  
       ' value="'.($ENV{'form.NTSTU'} ne '' ? $ENV{'form.NTSTU'} : '1').'" />'."\n");  
   
       if ($ENV{'form.handgrade'} eq 'yes') {  
   $request->print(<<KEYWORDS);  
 &nbsp;<b>Grading Options</b>   
 <a href="javascript:keywords(document.SCORE.keywords)"; TARGET=_self>Keywords list</a>&nbsp; &nbsp;  
 <a href="javascript:addmsg(document.SCORE.addmsg)"; TARGET=_self>Add a message</a>&nbsp; &nbsp;  
 <a href="javascript:savedmsg(document.SCORE.savemsgN)"; TARGET=_self>Saved messages</a><br /><br />  
 KEYWORDS  KEYWORDS
       }  
   }  
   
 #  #
 # Student info  # Load the other essays for similarity check
   $request->print(($counter == 0 ? '' : '<br /><hr><br />'));  
   my $result.='<table border="0"><tr><td><b>Username: </b>'.$uname.  
       '</td><td><b>Fullname: </b>'.  
   ($ENV{'form.fullname'} ne '' ? $ENV{'form.fullname'} : &get_fullname($uname,$udom)).  
       '</td><td><b>Domain: </b>'.$udom.'</td></tr>';  
   if ($ENV{'form.handgrade'} eq 'yes') {  
       my $subonly = &get_last_submission($symb,$uname,$udom,$ENV{'request.course.id'});  
       my ($classlist) = &getclasslist('all','0');  
       my @collaborators;  
       foreach ( sort(@{ $$classlist{'all'} }) ) {  
   my ($sname,$sdom) = split(/:/);  
   push @collaborators,$sname if (grep /\b$sname(\b|\.)/i,$subonly);  
       }  
       push @collaborators,'leede','carlandmm','freyniks'; # as a test to display collaborators.  
       if (scalar(@collaborators) != 0) {  
   $result.='<tr><td colspan=3><b>Collaborators: </b>';  
   foreach (@collaborators) {  
       $result.=$_.' ('.&get_fullname($_,$udom).') &nbsp; &nbsp;';  
   }  
   $result.='</td></tr>'."\n";  
   $result.='<input type="hidden" name="collaborator'.$counter.  
       '" value="'.(join ':',@collaborators).'" />'."\n";  
       }  
   }  
   $result.='<tr><td colspan=3><b>Resource: </b>'.$url.'</td></tr></table>'."\n";  
   $request->print($result);  
 #  #
 # print student answer              my $essayurl=&Apache::lonnet::declutter($url);
   $request->print(&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,      my ($adom,$aname,$apath)=($essayurl=~/^(\w+)\/(\w+)\/(.*)$/);
    $ENV{'request.course.id'},$last,      $apath=&Apache::lonnet::escape($apath);
    '.submission','Apache::grades::keywords_highlight'));      $apath=~s/\W/\_/gs;
 #      %oldessays=&Apache::lonnet::dump('nohist_essay_'.$apath,$adom,$aname);
 #          }
   my $wgt    = &Apache::lonnet::EXT('resource.partid.weight',$symb,$udom,$uname);      }
   my $wgtmsg = ($wgt > 0 ? '(problem weight)' : '<font color="red">problem weight assigned by computer</font>');  
   $wgt       = ($wgt > 0 ? $wgt : '1');  
   my %record = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);  
   my $score  = ($record{'resource.0.awarded'} eq '' ? '' : $record{'resource.0.awarded'}*$wgt);  
   
 #  
 # display grading options  
   $result='<input type="hidden" name="WGT'.$counter.'" value="'.$wgt.'" />'.  
       '<input type="hidden" name="unamedom'.$counter.'" value="'.$uname.':'.$udom.'" />'."\n";  
   $result.='<table border="0"><tr><td><b>Points</b></td><td>';  
   my $ctr = 0;  
   
   $result.='<table border="0"><tr>';  # display radio buttons in a nice table with 10 across  
   while ($ctr<=$wgt) {  
       $result.= '<td><input type="radio" name="RADVAL'.$counter.'" '.  
   'onclick="javascript:writeBox(this.form.GRADE_BOX'.$counter.  
     ',this.form.GRADE_SEL'.$counter.','.$ctr.','.$wgt.')" '.  
  ($score eq $ctr ? 'checked':'').' /> '.$ctr."</td>\n";  
       $result.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');  
       $ctr++;  
   }  
   $result.='</tr></table>';  
   
   $result.='</td><td>&nbsp;<b>or</b>&nbsp;</td>';      if ($ENV{'form.vProb'} eq 'all' or $ENV{'form.vAns'} eq 'all') {
   $result.='<td><input type="text" name="GRADE_BOX'.$counter.'"'.   $request->print('<br /><br /><br />') if ($counter > 0);
       ($score ne ''? ' value = "'.$score.'"':'').' size="4" '.   my $mode;
        'onChange="javascript:updateRadio(this.form.RADVAL'.$counter.   if ($ENV{'form.vProb'} eq 'all' && $ENV{'form.vAns'} eq 'all') {
         ',this.form.GRADE_BOX'.$counter.      $mode='both';
    ',this.form.GRADE_SEL'.$counter.',\''.$wgt.'\')" /></td>'."\n";   } elsif ($ENV{'form.vProb'} eq 'all' ) {
   $result.='<td>/'.$wgt.' '.$wgtmsg.' </td><td>';      $mode='text';
    } elsif ($ENV{'form.vAns'} eq 'all') {
   foreach my $part (&getpartlist($url)) {      $mode='answer';
     my ($temp,$part,$type)=split(/_/,$part);   }
     if ($type eq 'solved') {   $request->print(&show_problem($request,$symb,$uname,$udom,1,1,$mode));
       my ($status,$foo)=split(/_/,$record{"resource.$part.$type"},2);  
       $status = 'partial' if ($foo =~ /partially/);  
       $status = 'nothing' if ($status eq '');  
       $result.='<select name="GRADE_SEL'.$counter.'">'."\n";  
       my $optsel = '<option>correct</option><option>incorrect</option>'.  
   '<option>excused</option><option>ungraded</option>'.  
       '<option>partial</option><option>nothing</option>'."\n";  
       $optsel =~ s/<option>$status/<option selected="on">$status/;  
       $result.=$optsel;  
       $result.="</select></td></tr>\n";  
     }      }
   }  
   $result.='</table>';      my %record = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
   $request->print($result);  
 #      my ($partlist,$handgrade,$responseType) = &response_type($url,$symb);
 # print end of form  
   if ($counter == $total) {      # Display student info
       my $endform.='<table border="0"><tr><td><input type="submit" name="gradeOpt" value="Save & Next" />';      $request->print(($counter == 0 ? '' : '<br />'));
       my $ntstu ='<select name="NTSTU">'.      my $result='<table border="0" width=100%><tr><td bgcolor="#777777">'."\n".
   '<option>1</option><option>2</option>'.   '<table border="0" width=100%><tr bgcolor="#edffff"><td>'."\n";
       '<option>3</option><option>5</option>'.  
   '<option>7</option><option>10</option></select>'."\n";      $result.='<b>Fullname: </b>'.&nameUserString(undef,$ENV{'form.fullname'},$uname,$udom).'<br />'."\n";
       my $nsel = ($ENV{'form.NTSTU'} ne '' ? $ENV{'form.NTSTU'} : '1');      $result.='<input type="hidden" name="name'.$counter.
       $ntstu =~ s/<option>$nsel/<option selected="on">$nsel/;   '" value="'.$ENV{'form.fullname'}.'" />'."\n";
       $endform.=$ntstu.'student(s) &nbsp;&nbsp;';  
       $endform.='<input type="submit" name="gradeOpt" value="Next" />&nbsp';      # If any part of the problem is an essay-response (handgraded), then check for collaborators
       $endform.='<input type="submit" name="gradeOpt" value="Previous" />&nbsp';      my @col_fullnames;
       $endform.='(Next and Previous do not save the scores.)';      my ($classlist,$fullname);
       $endform.='</td><tr></table></form>';      if ($ENV{'form.handgrade'} eq 'yes') {
       $request->print($endform);   ($classlist,undef,$fullname) = &getclasslist('all','0');
   }   for (keys (%$handgrade)) {
   return '';      my $ncol = &Apache::lonnet::EXT('resource.'.$_.
       '.maxcollaborators',
                                               $symb,$udom,$uname);
       next if ($ncol <= 0);
               s/\_/\./g;
               next if ($record{'resource.'.$_.'.collaborators'} eq '');
               my @goodcollaborators = ();
               my @badcollaborators  = ();
       foreach (split(/,?\s+/,$record{'resource.'.$_.'.collaborators'})) { 
    $_ =~ s/[\$\^\(\)]//g;
    next if ($_ eq '');
    my ($co_name,$co_dom) = split /\@|:/,$_;
    $co_dom = $udom if (! defined($co_dom) || $co_dom =~ /^domain$/i);
    next if ($co_name eq $uname && $co_dom eq $udom);
    # Doing this grep allows 'fuzzy' specification
    my @Matches = grep /^$co_name:$co_dom$/i,keys %$classlist;
    if (! scalar(@Matches)) {
       push @badcollaborators,$_;
    } else {
       push @goodcollaborators, @Matches;
    }
       }
               if (scalar(@goodcollaborators) != 0) {
                   $result.='<b>Collaborators: </b>';
                   foreach (@goodcollaborators) {
       my ($lastname,$givenn) = split(/,/,$$fullname{$_});
       push @col_fullnames, $givenn.' '.$lastname;
       $result.=$$fullname{$_}.'&nbsp; &nbsp; &nbsp;';
    }
                   $result.='<br />'."\n";
    my ($part)=split(/\./,$_);
    $result.='<input type="hidden" name="collaborator'.$counter.
       '" value="'.$part.':'.(join ':',@goodcollaborators).'" />'.
       "\n";
       }
       if (scalar(@badcollaborators) > 0) {
    $result.='<table border="0"><tr bgcolor="#ffbbbb"><td>';
    $result.='This student has submitted ';
    $result.=(scalar(@badcollaborators) == 1) ? 'an invalid collaborator' : 'invalid collaborators';
    $result .= ': '.join(', ',@badcollaborators);
    $result .= '</td></tr></table>';
       }         
       if (scalar(@badcollaborators > $ncol)) {
    $result .= '<table border="0"><tr bgcolor="#ffbbbb"><td>';
    $result .= 'This student has submitted too many '.
       'collaborators.  Maximum is '.$ncol.'.';
    $result .= '</td></tr></table>';
       }
    }
       }
       $request->print($result."\n");
   
       # print student answer/submission
       # Options are (1) Handgaded submission only
       #             (2) Last submission, includes submission that is not handgraded 
       #                  (for multi-response type part)
       #             (3) Last submission plus the parts info
       #             (4) The whole record for this student
       if ($ENV{'form.lastSub'} =~ /^(lastonly|hdgrade)$/) {
    my ($string,$timestamp)= &get_last_submission(\%record);
    my $lastsubonly=''.
       ($$timestamp eq '' ? '' : '<b>Date Submitted:</b> '.
        $$timestamp)."</td></tr>\n";
    if ($$timestamp eq '') {
       $lastsubonly.='<tr><td bgcolor="#ffffe6">'.$$string[0]; 
    } else {
       my %seenparts;
       for my $part (sort keys(%$handgrade)) {
    my ($partid,$respid) = split(/_/,$part);
    my $display_part=&get_display_part($partid,$url,$symb);
    if ($ENV{"form.$uname:$udom:$partid:submitted_by"}) {
       if (exists($seenparts{$partid})) { next; }
       $seenparts{$partid}=1;
       my $submitby='<b>Part:</b> '.$display_part.
    ' <b>Collaborative submission by:</b> '.
    '<a href="javascript:viewSubmitter(\''.
    $ENV{"form.$uname:$udom:$partid:submitted_by"}.
    '\')"; TARGET=_self>'.
    $$fullname{$ENV{"form.$uname:$udom:$partid:submitted_by"}}.'</a><br />';
       $request->print($submitby);
       next;
    }
    my $responsetype = $responseType->{$partid}->{$respid};
    if (!exists($record{"resource.$partid.$respid.submission"})) {
       $lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part:</b> '.
    $display_part.' <font color="#999999">( ID '.$respid.
    ' )</font>&nbsp; &nbsp;'.
    '<font color="red">Nothing submitted - no attempts</font><br /><br />';
       next;
    }
    foreach (@$string) {
       my ($partid,$respid) = /^resource\.([^\.]*)\.([^\.]*)\.submission/;
       if ($part ne ($partid.'_'.$respid)) { next; }
       my ($ressub,$subval) = split(/:/,$_,2);
       # Similarity check
       my $similar='';
       if($ENV{'form.checkPlag'}){
    my ($oname,$odom,$ocrsid,$oessay,$osim)=
       &most_similar($uname,$udom,$subval);
    if ($osim) {
       $osim=int($osim*100.0);
       $similar="<hr /><h3><font color=\"#FF0000\">Essay".
    " is $osim% similar to an essay by ".
    &Apache::loncommon::plainname($oname,$odom).
    '</font></h3><blockquote><i>'.
    &keywords_highlight($oessay).
    '</i></blockquote><hr />';
    }
       }
       my $order=&get_order($partid,$respid,$symb,$uname,$udom);
       if ($ENV{'form.lastSub'} eq 'lastonly' || 
    ($ENV{'form.lastSub'} eq 'hdgrade' && 
    $$handgrade{$part} eq 'yes')) {
    my $display_part=&get_display_part($partid,$url,$symb);
    $lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part:</b> '.
       $display_part.' <font color="#999999">( ID '.$respid.
       ' )</font>&nbsp; &nbsp;';
    if ($record{"resource.$partid.$respid.uploadedurl"}) {
       &Apache::lonnet::allowuploaded('/adm/grades',
         $record{"resource.$partid.$respid.uploadedurl"});
       $lastsubonly.='<a href="'.$record{"resource.$partid.$respid.uploadedurl"}.'" target="lonGRDs"><img src="/adm/lonIcons/unknown.gif" border=0"> File uploaded by student</a> <font color="red" size="1">Like all files provided by users, this file may contain virusses</font><br />';
    }
    $lastsubonly.='<b>Submitted Answer: </b>'.
       &cleanRecord($subval,$responsetype,$symb,$partid,
    $respid,\%record,$order);
    if ($similar) {$lastsubonly.="<br /><br />$similar\n";}
       }
    }
       }
    }
    $lastsubonly.='</td></tr><tr bgcolor="#ffffff"><td>'."\n";
    $request->print($lastsubonly);
       } elsif ($ENV{'form.lastSub'} eq 'datesub') {
    my (undef,$responseType,undef,$parts) = &showResourceInfo($url);
    $request->print(&displaySubByDates($symb,\%record,$parts,$responseType,$checkIcon,$uname,$udom));
       } elsif ($ENV{'form.lastSub'} =~ /^(last|all)$/) {
    $request->print(&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,
    $ENV{'request.course.id'},
    $last,'.submission',
    'Apache::grades::keywords_highlight'));
       }
   
       $request->print('<input type="hidden" name="unamedom'.$counter.'" value="'.$uname.':'
    .$udom.'" />'."\n");
       
       # return if view submission with no grading option
       if ($ENV{'form.showgrading'} eq '' || (!&canmodify($usec))) {
    my $toGrade.='<input type="button" value="Grade Student" '.
       'onClick="javascript:checksubmit(this.form,\'Grade Student\',\''
       .$counter.'\');" TARGET=_self> &nbsp;'."\n" if (&canmodify($usec));
    $toGrade.='</td></tr></table></td></tr></table>'."\n";
    if (($ENV{'form.command'} eq 'submission') || 
       ($ENV{'form.command'} eq 'processGroup' && $counter == $total)) {
       $toGrade.='</form>'.&show_grading_menu_form($symb,$url) 
    }
    $request->print($toGrade);
    return;
       } else {
    $request->print('</td></tr></table></td></tr></table>'."\n");
       }
   
       # essay grading message center
       if ($ENV{'form.handgrade'} eq 'yes') {
    my ($lastname,$givenn) = split(/,/,$ENV{'form.fullname'});
    my $msgfor = $givenn.' '.$lastname;
    if (scalar(@col_fullnames) > 0) {
       my $lastone = pop @col_fullnames;
       $msgfor .= ', '.(join ', ',@col_fullnames).' and '.$lastone.'.';
    }
    $msgfor =~ s/\'/\\'/g; #' stupid emacs - no! javascript
    $result='<input type="hidden" name="includemsg'.$counter.'" value="" />'."\n".
       '<input type="hidden" name="newmsg'.$counter.'" value="" />'."\n";
    $result.='&nbsp;<a href="javascript:msgCenter(document.SCORE,'.$counter.
       ',\''.$msgfor.'\')"; TARGET=_self>'.
       'Compose Message to student'.(scalar(@col_fullnames) >= 1 ? 's' : '').'</a> &nbsp;'.
       '<img src="'.$request->dir_config('lonIconsURL').
       '/mailbkgrd.gif" width="14" height="10" name="mailicon'.$counter.'" />'."\n".
       '<br />&nbsp;(Message will be sent when you click on Save & Next below.)'."\n" 
       if ($ENV{'form.handgrade'} eq 'yes');
    $request->print($result);
       }
   
       my %seen = ();
       my @partlist;
       my @gradePartRespid;
       for (sort keys(%$handgrade)) {
    my ($partid,$respid) = split(/_/);
    next if ($seen{$partid} > 0);
    $seen{$partid}++;
    next if ($$handgrade{$_} =~ /:no$/ && $ENV{'form.lastSub'} =~ /^(hdgrade)$/);
    push @partlist,$partid;
    push @gradePartRespid,$partid.'.'.$respid;
   
    $request->print(&gradeBox($request,$symb,$uname,$udom,$counter,$partid,\%record));
       }
       $result='<input type="hidden" name="partlist'.$counter.
    '" value="'.(join ":",@partlist).'" />'."\n";
       $result.='<input type="hidden" name="gradePartRespid'.
    '" value="'.(join ":",@gradePartRespid).'" />'."\n" if ($counter == 0);
       my $ctr = 0;
       while ($ctr < scalar(@partlist)) {
    $result.='<input type="hidden" name="partid'.$counter.'_'.$ctr.'" value="'.
       $partlist[$ctr].'" />'."\n";
    $ctr++;
       }
       $request->print($result.'</td></tr></table></td></tr></table>'."\n");
   
       # print end of form
       if ($counter == $total) {
    my $endform='<table border="0"><tr><td>'."\n";
    $endform.='<input type="button" value="Save & Next" '.
       'onClick="javascript:checksubmit(this.form,\'Save & Next\','.
       $total.','.scalar(@partlist).');" TARGET=_self> &nbsp;'."\n";
    my $ntstu ='<select name="NTSTU">'.
       '<option>1</option><option>2</option>'.
       '<option>3</option><option>5</option>'.
       '<option>7</option><option>10</option></select>'."\n";
    my $nsel = ($ENV{'form.NTSTU'} ne '' ? $ENV{'form.NTSTU'} : '1');
    $ntstu =~ s/<option>$nsel</<option selected="on">$nsel</;
    $endform.=$ntstu.'student(s) &nbsp;&nbsp;';
    $endform.='<input type="button" value="Previous" '.
       'onClick="javascript:checksubmit(this.form,\'Previous\');" TARGET=_self> &nbsp;'."\n".
       '<input type="button" value="Next" '.
       'onClick="javascript:checksubmit(this.form,\'Next\');" TARGET=_self> &nbsp;';
    $endform.='(Next and Previous (student) do not save the scores.)'."\n" ;
    $endform.='</td><tr></table></form>';
    $endform.=&show_grading_menu_form($symb,$url);
    $request->print($endform);
       }
       return '';
 }  }
   
   #--- Retrieve the last submission for all the parts
 sub get_last_submission {  sub get_last_submission {
   my ($symb,$username,$domain,$course)=@_;      my ($returnhash)=@_;
   if ($symb) {      my (@string,$timestamp);
      my (%returnhash)=&Apache::lonnet::restore($symb,$course,$domain,$username);      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 (sort(split(/\:/,$$returnhash{$version.':keys'}))) {
       $lasthash{$_}=$returnhash{$version.':'.$_};   $lasthash{$_}=$$returnhash{$version.':'.$_};
   }     $timestamp = scalar(localtime($$returnhash{$version.':timestamp'}));
         }      }
    }
  foreach ((keys %lasthash)) {   foreach ((keys %lasthash)) {
     if ($_ =~ /\.submission$/) {return $lasthash{$_}}      if ($_ =~ /\.submission$/) {
    my ($partid,$foo) = split(/submission$/,$_);
    my $draft  = $lasthash{$partid.'awarddetail'} eq 'DRAFT' ?
       '<font color="red">Draft Copy</font> ' : '';
    push @string, (join(':',$_,$draft.$lasthash{$_}));
       }
  }   }
  return '';  
     }      }
   }      @string = $string[0] eq '' ? '<font color="red">Nothing submitted - no attempts.</font>' : @string;
       return \@string,\$timestamp;
 }  }
   
   #--- High light keywords, with style choosen by user.
 sub keywords_highlight {  sub keywords_highlight {
   my $string  = shift;      my $string    = shift;
   (my $url=$ENV{'form.url'})=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;      my $size      = $ENV{'form.kwsize'} eq '0' ? '' : 'size='.$ENV{'form.kwsize'};
   my $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url)));      my $styleon   = $ENV{'form.kwstyle'} eq ''  ? '' : $ENV{'form.kwstyle'};
   my %keyhash = &Apache::lonnet::get      (my $styleoff = $styleon) =~ s/\</\<\//;
       ('nohist_handgrade',[$symb.'_keywords'],      my @keylist   = split(/[,\s+]/,$ENV{'form.keywords'});
        $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},      foreach (@keylist) {
        $ENV{'course.'.$ENV{'request.course.id'}.'.num'});   $string =~ s/\b\Q$_\E(\b|\.)/<font color\=$ENV{'form.kwclr'} $size\>$styleon$_$styleoff<\/font>/gi;
   my @keylist = split(/[,\s+]/,$keyhash{$symb.'_keywords'});      }
   foreach my $word (@keylist) {      return $string;
       next if ($word eq '');  
       $string =~ s/\b$word(\b|\.)/\<font color\=red\>$word\<\/font\>/gi;  
   }  
   return $string;  
 }  }
   
   #--- Called from submission routine
 sub processHandGrade {  sub processHandGrade {
   my ($request) = shift;      my ($request) = shift;
   my $url    = $ENV{'form.url'};      my $url    = $ENV{'form.url'};
   my $symb   = $ENV{'form.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 $keywords= $ENV{'form.keywords'};      if ($button eq 'Save & Next') {
   my $addmsg  = $ENV{'form.addmsg'};   my $ctr = 0;
   print "addmsg=$addmsg<br>";   while ($ctr < $ngrade) {
   if ($keywords ne '') {      my ($uname,$udom) = split(/:/,$ENV{'form.unamedom'.$ctr});
       my $crsname = $ENV{'course.'.$ENV{'request.course.id'}.'.num'};      my ($errorflag,$pts,$wgt) = &saveHandGrade($request,$url,$symb,$uname,$udom,$ctr);
       my $crsdom  = $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};      if ($errorflag eq 'no_score') {
       my $putresult = &Apache::lonnet::put   $ctr++;
                 ('nohist_handgrade',{$symb.'_keywords' => $keywords},   next;
                  $crsdom,$crsname);      }
   }      if ($errorflag eq 'not_allowed') {
   my (@parts) = sort(&getpartlist($url));   $request->print("<font color=\"red\">Not allowed to modify grades for $uname:$udom</font>");
    $ctr++;
    next;
       }
       my $includemsg = $ENV{'form.includemsg'.$ctr};
       my ($subject,$message,$msgstatus) = ('','','');
       if ($includemsg =~ /savemsg|newmsg\Q$ctr\E/) {
    $subject = $ENV{'form.msgsub'} if ($includemsg =~ /^msgsub/);
    my (@msgnum) = split(/,/,$includemsg);
    foreach (@msgnum) {
       $message.=$ENV{'form.'.$_} if ($_ =~ /savemsg|newmsg/ && $_ ne '');
    }
    $message =&Apache::lonfeedback::clear_out_html($message);
    $message.="\n\nPoint".($pts > 1 ? 's':'').' awarded = '.$pts.' out of '.$wgt;
    $message.=" for <a href=\"".
       &Apache::lonnet::clutter($url).
       "?symb=$symb\">$ENV{'form.probTitle'}</a>";
    $msgstatus = &Apache::lonmsg::user_normal_msg ($uname,$udom,
          $ENV{'form.msgsub'},$message);
       }
       if ($ENV{'form.collaborator'.$ctr}) {
    my @collabstrs=&Apache::loncommon::get_env_multiple("form.collaborator$ctr");
    foreach my $collabstr (@collabstrs) {
       my ($part,@collaborators) = split(/:/,$collabstr);
       foreach (@collaborators) {
    my ($errorflag,$pts,$wgt) = 
       &saveHandGrade($request,$url,$symb,$_,$udom,$ctr,
      $ENV{'form.unamedom'.$ctr},$part);
    if ($errorflag eq 'not_allowed') {
       $request->print("<font color=\"red\">Not allowed to modify grades for $_:$udom</font>");
       next;
    } else {
       if ($message ne '') {
    $msgstatus = &Apache::lonmsg::user_normal_msg($_,$udom,$ENV{'form.msgsub'},$message);
       }
       
    }
       }
    }
       }
       $ctr++;
    }
       }
   
   if ($button eq 'Save & Next') {      if ($ENV{'form.handgrade'} eq 'yes') {
       my $ctr = 0;   # Keywords sorted in alphabatical order
       while ($ctr < $ENV{'form.NCT'}) {   my $loginuser = $ENV{'user.name'}.':'.$ENV{'user.domain'};
   my ($uname,$udom) = split(/:/,$ENV{'form.unamedom'.$ctr});   my %keyhash = ();
   &saveHandGrade($url,$symb,$uname,$udom,$ctr,@parts);   $ENV{'form.keywords'}           =~ s/,\s{0,}|\s+/ /g;
   if ($ENV{'form.collaborator'.$ctr}) {   $ENV{'form.keywords'}           =~ s/^\s+|\s+$//;
       my (@collaborators) = split(/:/,$ENV{'form.collaborator'.$ctr});   my (@keywords) = sort(split(/\s+/,$ENV{'form.keywords'}));
       foreach (@collaborators) {   $ENV{'form.keywords'} = join(' ',@keywords);
   &saveHandGrade($url,$symb,$_,$udom,$ctr,@parts);   $keyhash{$symb.'_keywords'}     = $ENV{'form.keywords'};
       }   $keyhash{$symb.'_subject'}      = $ENV{'form.msgsub'};
   }   $keyhash{$loginuser.'_kwclr'}   = $ENV{'form.kwclr'};
   $ctr++;   $keyhash{$loginuser.'_kwsize'}  = $ENV{'form.kwsize'};
       }   $keyhash{$loginuser.'_kwstyle'} = $ENV{'form.kwstyle'};
   }  
   my $firststu = $ENV{'form.unamedom0'};   # message center - Order of message gets changed. Blank line is eliminated.
   my $laststu  = $ENV{'form.unamedom'.($ngrade-1)};   # New messages are saved in ENV for the next student.
    # 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++;
    }
    $ctr = 0;
    while ($ctr < $ngrade) {
       if ($ENV{'form.newmsg'.$ctr} ne '') {
    $keyhash{$symb.'_savemsg'.$idx} = $ENV{'form.newmsg'.$ctr};
    $ENV{'form.savemsg'.$idx} = $ENV{'form.newmsg'.$ctr};
    $idx++;
       }
       $ctr++;
    }
    $ENV{'form.savemsgN'} = --$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
       my (undef,undef,$fullname) = &getclasslist($ENV{'form.section'},'1');
       if ($ENV{'form.refresh'} eq 'on') {
    my ($ctr,$total) = (0,0);
    while ($ctr < $ngrade) {
       $total++ if  $ENV{'form.unamedom'.$ctr} ne '';
       $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);
       $ctr++;
    }
    return '';
       }
   
   my ($classlist) = &getclasslist($ENV{'form.section'},'0');  # Go directly to grade student - from submission or link from chart page
       if ($button eq 'Grade Student') {
    (undef,undef,$ENV{'form.handgrade'},undef,undef) = &showResourceInfo($url);
    my $processUser = $ENV{'form.unamedom'.$ENV{'form.studentNo'}};
    ($ENV{'form.student'},$ENV{'form.userdom'}) = split(/:/,$processUser);
    $ENV{'form.fullname'} = $$fullname{$processUser};
    &submission($request,0,0);
    return '';
       }
   
   my (@nextlist,@prevlist);      # Get the next/previous one or group of students
   my ($nextflg,$prevflg,$ctr,$ctprev) = (0,0,0,0);      my $firststu = $ENV{'form.unamedom0'};
   foreach my $student ( sort(@{ $$classlist{$ENV{'form.section'}} }) ) {      my $laststu = $ENV{'form.unamedom'.($ngrade-1)};
       my ($uname,$udom) = split(/:/,$student);      my $ctr = 2;
       if ($nextflg == 1 && $button =~ /Next$/) {      while ($laststu eq '') {
   push @nextlist,$uname if ($ctr < $ntstu);   $laststu  = $ENV{'form.unamedom'.($ngrade-$ctr)};
   $ctr++;   $ctr++;
       }   $laststu = $firststu if ($ctr > $ngrade);
       $nextflg = 1 if ($student eq $laststu);      }
       $prevflg = 1 if ($student eq $firststu);  
       if ($prevflg == 0 && $button eq 'Previous') {  
   push @prevlist,$uname;  
   $ctprev++;  
       }  
   }  
   if ($button eq 'Previous') {  
       if ($ctprev <= $ntstu) {  
   @nextlist = @prevlist;  
       } else {  
   my $idx = 0;  
   my $start = $ctprev - $ntstu;  
   while ($idx < $ntstu) {  
       $nextlist[$idx] = $prevlist[$start+$idx];  
       $idx++;  
   }  
       }  
   }  
   $ctr = 0;  
   my $total = scalar(@nextlist)-1;  
   foreach my $student (@nextlist) {  
       $ENV{'form.student'} = $student;  
       &submission($request,$ctr,$total);  
       $ctr++;  
   }  
   
   return 'The End';      my (@parsedlist,@nextlist);
       my ($nextflg) = 0;
       foreach (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {
    if ($nextflg == 1 && $button =~ /Next$/) {
       push @parsedlist,$_;
    }
    $nextflg = 1 if ($_ eq $laststu);
    if ($button eq 'Previous') {
       last if ($_ eq $firststu);
       push @parsedlist,$_;
    }
       }
       $ctr = 0;
       @parsedlist = reverse @parsedlist if ($button eq 'Previous');
       my ($partlist) = &response_type($url);
       foreach my $student (@parsedlist) {
    my $submitonly=$ENV{'form.submitonly'};
    my ($uname,$udom) = split(/:/,$student);
    if ($submitonly =~ /^(yes|graded|incorrect)$/) {
   #    my %record = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
       my %status=&student_gradeStatus($url,$symb,$udom,$uname,$partlist);
       my $submitted = 0;
       my $graded = 1;
       foreach (keys(%status)) {
    $submitted = 1 if ($status{$_} ne 'nothing');
    $graded = 0 if ($status{$_} =~ /^correct/);
    my ($foo,$partid,$foo1) = split(/\./,$_);
    if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
       $submitted = 0;
    }
       }
       next if (!$submitted && ($submitonly eq 'yes' ||
        $submitonly eq 'incorrect' ||
        $submitonly eq 'graded'));
       next if (!$graded && ($submitonly eq 'graded' ||
     $submitonly eq 'incorrect'));
    }
    push @nextlist,$student if ($ctr < $ntstu);
    last if ($ctr == $ntstu);
    $ctr++;
       }
   
       $ctr = 0;
       my $total = scalar(@nextlist)-1;
   
       foreach (sort @nextlist) {
    my ($uname,$udom,$submitter) = split(/:/);
    $ENV{'form.student'}  = $uname;
    $ENV{'form.userdom'}  = $udom;
    $ENV{'form.fullname'} = $$fullname{$_};
    &submission($request,$ctr,$total);
    $ctr++;
       }
       if ($total < 0) {
    my $the_end = '<h3><font color="red">LON-CAPA User Message</font></h3><br />'."\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);
       }
       return '';
 }  }
   
   #---- Save the score and award for each student, if changed
 sub saveHandGrade {  sub saveHandGrade {
   my ($url,$symb,$stuname,$domain,$newflg,@parts) = @_;      my ($request,$url,$symb,$stuname,$domain,$newflg,$submitter,$part) = @_;
   my %record=&Apache::lonnet::restore($symb,$ENV{'request.course.id'},$domain,$stuname);      my $usec = &Apache::lonnet::getsection($domain,$stuname,
   my %newrecord;     $ENV{'request.course.id'});
       if (!&canmodify($usec)) { return('not_allowed'); }
   foreach my $part (@parts) {      my %record     = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$domain,$stuname);
     my ($temp,$part,$type)=split(/_/,$part);      my %newrecord  = ();
     my $oldscore=$record{"resource.$part.$type"};      my ($pts,$wgt) = ('','');
     my $newscore;      foreach (split(/:/,$ENV{'form.partlist'.$newflg})) {
     if ($type eq 'awarded' && $newflg >= 0) {   #collaborator may vary for different parts
  my $pts    = ($ENV{'form.GRADE_BOX'.$newflg} ne '' ?    if ($submitter && $_ ne $part) { next; }
       $ENV{'form.GRADE_BOX'.$newflg} : $ENV{'form.RADVAL'.$newflg});   my $dropMenu = $ENV{'form.GD_SEL'.$newflg.'_'.$_};
  my $wgt    = $ENV{'form.WGT'.$newflg};   if ($dropMenu eq 'excused') {
 # my $sel    = $ENV{'form.GRADE_SEL'.$newflg};      if ($record{'resource.'.$_.'.solved'} ne 'excused') {
  $newscore  = $pts/$wgt if ($wgt != 0);   $newrecord{'resource.'.$_.'.solved'} = 'excused';
     }   if (exists($record{'resource.'.$_.'.awarded'})) {
     if ($type eq 'solved') {      $newrecord{'resource.'.$_.'.awarded'} = '';
       $newscore = $ENV{'form.GRADE_SEL'.$newflg} if ($newflg >= 0);   }
       my $update=0;      $newrecord{'resource.'.$_.'.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
       if ($newscore eq 'nothing' ) {      }
  if ($oldscore ne '') {   } elsif ($dropMenu eq 'reset status'
   $update=1;   && exists($record{'resource.'.$_.'.solved'})) { #don't bother if no old records -> no attempts
   $newscore = '';      foreach my $key (keys (%record)) {
  }   if ($key=~/^resource\.\Q$_\E\./) { $newrecord{$key} = ''; }
       } elsif ($oldscore !~ m/^$newscore/) {      }
  $update=1;      $newrecord{'resource.'.$_.'.regrader'}=
  if ($newscore eq 'correct')   { $newscore = 'correct_by_override'; }   "$ENV{'user.name'}:$ENV{'user.domain'}";
  if ($newscore eq 'incorrect') { $newscore = 'incorrect_by_override'; }   } elsif ($dropMenu eq '') {
  if ($newscore eq 'excused')   { $newscore = 'excused'; }      $pts = ($ENV{'form.GD_BOX'.$newflg.'_'.$_} ne '' ? 
  if ($newscore eq 'ungraded')  { $newscore = 'ungraded_attempted'; }      $ENV{'form.GD_BOX'.$newflg.'_'.$_} : 
  if ($newscore eq 'partial')   { $newscore = 'correct_partially_by_override'; }      $ENV{'form.RADVAL'.$newflg.'_'.$_});
       }      if ($pts eq '' && $ENV{'form.GD_SEL'.$newflg.'_'.$_} eq '') {
       if ($update) { $newrecord{"resource.$part.$type"}=$newscore; }   next;
     } else {      }
       if ($oldscore ne $newscore) {      $wgt = $ENV{'form.WGT'.$newflg.'_'.$_} eq '' ? 1 : 
  $newrecord{"resource.$part.$type"}=$newscore;   $ENV{'form.WGT'.$newflg.'_'.$_};
       }      my $partial= $pts/$wgt;
       if ($partial eq $record{'resource.'.$_.'.awarded'}) {
    #do not update score for part if not changed.
    next;
       }
       if ($record{'resource.'.$_.'.awarded'} ne $partial) {
    $newrecord{'resource.'.$_.'.awarded'}  = $partial;
       }
       my $reckey = 'resource.'.$_.'.solved';
       if ($partial == 0) {
    if ($record{$reckey} ne 'incorrect_by_override') {
       $newrecord{$reckey} = 'incorrect_by_override';
    }
       } else {
    if ($record{$reckey} ne 'correct_by_override') {
       $newrecord{$reckey} = 'correct_by_override';
    }
       }    
       if ($submitter && 
    ($record{'resource.'.$_.'.submitted_by'} ne $submitter)) {
    $newrecord{'resource.'.$_.'.submitted_by'} = $submitter;
       }
       $newrecord{'resource.'.$_.'.regrader'}=
    "$ENV{'user.name'}:$ENV{'user.domain'}";
    }
     }      }
   }      if (scalar(keys(%newrecord)) > 0) {
   if ( scalar(keys(%newrecord)) > 0 ) {   &Apache::lonnet::cstore(\%newrecord,$symb,
       $newrecord{'resource.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";   $ENV{'request.course.id'},$domain,$stuname);
 #      while (my ($k,$v) = each %newrecord) {      }
 # print "k=$k:v=$v:<br>\n";      return '',$pts,$wgt;
 #      }  
 #      print "symb=$symb,courseid=$ENV{'request.course.id'},dom=$domain,name=$stuname<br>";  
 #     &Apache::lonnet::cstore(\%newrecord,$symb,$ENV{'request.course.id'},$domain,$stuname);  
   }  
   return '';  
 }  }
   
 sub get_symb_and_url {  #--------------------------------------------------------------------------------------
   my ($request) = @_;  #
   (my $url=$ENV{'form.url'}) =~ s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;  #-------------------------- Next few routines handles grading by section or whole class
   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 ''; }  #--- Javascript to handle grading by section or whole class
   return ($symb,$url);  sub viewgrades_js {
 }      my ($request) = shift;
   
 sub show_grading_menu_form {      $request->print(<<VIEWJAVASCRIPT);
   my ($symb,$url)=@_;  <script type="text/javascript" language="javascript">
   my $result.='<form action="/adm/grades" method="post">'."\n".     function writePoint(partid,weight,point) {
     '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".   var radioButton = document.classgrade["RADVAL_"+partid];
       '<input type="hidden" name="url" value="'.$url.'" />'."\n".   var textbox = document.classgrade["TEXTVAL_"+partid];
  '<input type="hidden" name="command" value="gradingmenu" />'."\n".   if (point == "textval") {
   '<input type="submit" name="submit" value="Grading Menu" />'."\n".      point = document.classgrade["TEXTVAL_"+partid].value;
     '</form>'."\n";      if (isNaN(point) || parseFloat(point) < 0) {
   return $result;   alert("A number equal or greater than 0 is expected. Entered value = "+parseFloat(point));
 }   var resetbox = false;
    for (var i=0; i<radioButton.length; i++) {
       if (radioButton[i].checked) {
    textbox.value = i;
    resetbox = true;
       }
    }
    if (!resetbox) {
       textbox.value = "";
    }
    return;
       }
       if (parseFloat(point) > parseFloat(weight)) {
    var resp = confirm("You entered a value ("+parseFloat(point)+
      ") greater than the weight for the part. Accept?");
    if (resp == false) {
       textbox.value = "";
       return;
    }
       }
       for (var i=0; i<radioButton.length; i++) {
    radioButton[i].checked=false;
    if (parseFloat(point) == i) {
       radioButton[i].checked=true;
    }
       }
   
 sub gradingmenu {   } else {
   my ($request) = @_;      textbox.value = parseFloat(point);
   my ($symb,$url)=&get_symb_and_url($request);   }
   if (!$symb) {return '';}   for (i=0;i<document.classgrade.total.value;i++) {
   my $allkeys = &Apache::lonnet::metadata($url,'keys');      var user = document.classgrade["ctr"+i].value;
   my $handgrade = ($allkeys =~ /parameter_.*?_handgrade/ ? 'yes' : 'no');      var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
   my ($responsetype,$foo) = split(/_/,&Apache::lonnet::metadata($url,'packages'));      var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
       var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
   my $result='<h2>&nbsp;<font color="#339933">Select a Grading Method</font></h2>';      if (saveval != "correct") {
   $result.='<table border="0">';   scorename.value = point;
   $result.='<tr><td><font size=+1><b>Resource: </b></font></td>'.   if (selname[0].selected != true) {
       '<td><font size=+1>'.$url.'</font></td></tr>';      selname[0].selected = true;
   $result.='<tr><td><font size=+1><b>Type: </b></font></td>'.   }
       '<td><font size=+1>'.$responsetype.'&nbsp;&nbsp;<b>Handgrade: </b>'.$handgrade.'</font></td></tr>';      }
   $result.='</table>';   }
    document.classgrade["SELVAL_"+partid][0].selected = true;
   $result.=&view_edit_entire_class_form($symb,$url).'<br />';      }
   $result.=&upcsvScores_form($symb,$url).'<br />';  
   $result.=&viewGradeaStu_form($symb,$url,$responsetype,$handgrade).'<br />';  
   $result.=&verifyReceipt_form($symb,$url);  
   return $result;  
 }  
   
 sub view_edit_entire_class_form {  
   my ($symb,$url)=@_;  
   my $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";  
   $result.='<table width=100% border=0><tr bgcolor="#e6ffff"><td>'."\n";  
   $result.='&nbsp;<b>View/Grade Entire Class</b></td></tr>'."\n";  
   $result.='<tr bgcolor=#ffffe6><td>'."\n";  
   $result.='<form action="/adm/grades" method="post">'."\n".  
     '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".  
       '<input type="hidden" name="url" value="'.$url.'" />'."\n".  
   '<input type="hidden" name="command" value="viewgrades" />'."\n";  
   $result.='&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 /><br />';  
   $result.='&nbsp;<input type="submit" name="submit" value="View/Grade" /></form>'."\n";  
   $result.='</td></tr></table>'."\n";  
   $result.='</td></tr></table>'."\n";  
   return $result;  
 }  
   
 sub upcsvScores_form {      function writeRadText(partid,weight) {
   my ($symb,$url) = @_;   var selval   = document.classgrade["SELVAL_"+partid];
   if (!$symb) {return '';}   var radioButton = document.classgrade["RADVAL_"+partid];
   my $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";   var textbox = document.classgrade["TEXTVAL_"+partid];
   $result.='<table width=100% border=0><tr bgcolor="#e6ffff"><td>'."\n";   if (selval[1].selected || selval[2].selected) {
   $result.='&nbsp;<b>Specify a file containing the class scores for above resource</b></td></tr>'."\n";      for (var i=0; i<radioButton.length; i++) {
   $result.='<tr bgcolor=#ffffe6><td>'."\n";   radioButton[i].checked=false;
   my $upfile_select=&Apache::loncommon::upfile_select_html();  
   $result.=<<ENDUPFORM;      }
 <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">      textbox.value = "";
 <input type="hidden" name="symb" value="$symb" />  
 <input type="hidden" name="url" value="$url" />      for (i=0;i<document.classgrade.total.value;i++) {
 <input type="hidden" name="command" value="csvuploadmap" />   var user = document.classgrade["ctr"+i].value;
 $upfile_select   var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
 <br />&nbsp;<input type="submit" name="submit" value="Upload Grades" />   var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
 </form>   var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
 ENDUPFORM   if (saveval != "correct") {
   $result.='</td></tr></table>'."\n";      scorename.value = "";
   $result.='</td></tr></table>'."\n";      if (selval[1].selected) {
   return $result;   selname[1].selected = true;
 }      } else {
    selname[2].selected = true;
 sub viewGradeaStu_form {   if (Number(document.classgrade["GD_"+user+"_"+partid+"_tries"].value)) 
   my ($symb,$url,$response,$handgrade) = @_;   {document.classgrade["GD_"+user+"_"+partid+"_tries"].value = '0';}
   my ($classlist,$sections) = &getclasslist('all','0');      }
   my $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";   }
   $result.='<table width=100% border=0><tr bgcolor="#e6ffff"><td>'."\n";      }
   $result.='&nbsp;<b>View/Grade an Individual Student\'s Submission</b></td></tr>'."\n";   } else {
   $result.='<tr bgcolor=#ffffe6><td>'."\n";      for (i=0;i<document.classgrade.total.value;i++) {
   $result.='<form action="/adm/grades" method="post">'."\n".   var user = document.classgrade["ctr"+i].value;
      '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".   var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
       '<input type="hidden" name="url" value="'.$url.'" />'."\n".   var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
        '<input type="hidden" name="response" value="'.$response.'" />'."\n".   var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
         '<input type="hidden" name="handgrade" value="'.$handgrade.'" />'."\n".   if (saveval != "correct") {
  '<input type="hidden" name="command" value="submission" />'."\n";      scorename.value = document.classgrade["GD_"+user+"_"+partid+"_awarded_s"].value;
       selname[0].selected = true;
   $result.='&nbsp;<b>Select section:</b> <select name="section">'."\n";   }
   foreach my $section (sort (@$sections)) {      }
       $result.= '<option>'.$section.'</option>'."\n";   }    
   }      }
   $result.= '<option selected="on">all</select>'."\n";  
   $result.='&nbsp;&nbsp;<b>Display students who has: </b>'.      function changeSelect(partid,user) {
       '<input type="radio" name="submitonly" value="yes" checked> submitted'.   var selval = document.classgrade["GD_"+user+'_'+partid+"_solved"];
   '<input type="radio" name="submitonly" value="all"> everybody <br />';   var textbox = document.classgrade["GD_"+user+'_'+partid+"_awarded"];
   $result.='&nbsp;(Section "no" implies the students were not assigned a section.)<br />'    var point  = textbox.value;
       if (grep /no/,@$sections);   var weight = document.classgrade["weight_"+partid].value;
   
   $result.='<br />&nbsp;<input type="submit" name="submit" value="View/Grade" />'."\n".   if (isNaN(point) || parseFloat(point) < 0) {
       '</form>'."\n";      alert("A number equal or greater than 0 is expected. Entered value = "+parseFloat(point));
   $result.='</td></tr></table>'."\n";      textbox.value = "";
   $result.='</td></tr></table>'."\n";      return;
   return $result;   }
 }   if (parseFloat(point) > parseFloat(weight)) {
       var resp = confirm("You entered a value ("+parseFloat(point)+
 sub verifyReceipt_form {         ") greater than the weight of the part. Accept?");
   my ($symb,$url) = @_;      if (resp == false) {
   my $cdom=$ENV{"course.$ENV{'request.course.id'}.domain"};   textbox.value = "";
   my $cnum=$ENV{"course.$ENV{'request.course.id'}.num"};   return;
   my $hostver=unpack("%32C*",$Apache::lonnet::perlvar{'lonHostID'});      }
    }
   my $result.='<table width=100% border=0><tr><td bgcolor=#777777>'."\n";   selval[0].selected = true;
   $result.='<table width=100% border=0><tr><td bgcolor=#e6ffff>'."\n";      }
   $result.='&nbsp;<b>Verify a Submission Receipt Issued by this Server</td></tr>'."\n";  
   $result.='<tr bgcolor=#ffffe6><td>'."\n";      function changeOneScore(partid,user) {
   $result.='<form action="/adm/grades" method="post">'."\n";   var selval = document.classgrade["GD_"+user+'_'+partid+"_solved"];
   $result.='&nbsp;<tt>'.$hostver.'-<input type="text" name="receipt" size="4"></tt><br />'."\n";   if (selval[1].selected || selval[2].selected) {
   $result.='&nbsp;<input type="submit" name="submit" value="Verify Receipt">'."\n";      document.classgrade["GD_"+user+'_'+partid+"_awarded"].value = "";
   $result.='<input type="hidden" name="command" value="verify">'."\n";      if (selval[2].selected) {
   if ($ENV{'form.url'}) {   document.classgrade["GD_"+user+'_'+partid+"_tries"].value = "0";
       $result.='<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />';      }
   }   }
   if ($ENV{'form.symb'}) {      }
       $result.='<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />';  
   }      function resetEntry(numpart) {
   $result.='</form>';   for (ctpart=0;ctpart<numpart;ctpart++) {
   $result.='</td></tr></table>'."\n";      var partid = document.classgrade["partid_"+ctpart].value;
   $result.='</td></tr></table>'."\n";      var radioButton = document.classgrade["RADVAL_"+partid];
   return $result;      var textbox = document.classgrade["TEXTVAL_"+partid];
       var selval  = document.classgrade["SELVAL_"+partid];
       for (var i=0; i<radioButton.length; i++) {
    radioButton[i].checked=false;
   
       }
       textbox.value = "";
       selval[0].selected = true;
   
       for (i=0;i<document.classgrade.total.value;i++) {
    var user = document.classgrade["ctr"+i].value;
    var resetscore = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
    resetscore.value = document.classgrade["GD_"+user+"_"+partid+"_awarded_s"].value;
    var resettries = document.classgrade["GD_"+user+"_"+partid+"_tries"];
    resettries.value = document.classgrade["GD_"+user+"_"+partid+"_tries_s"].value;
    var saveselval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
    var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
    if (saveselval == "excused") {
       if (selname[1].selected == false) { selname[1].selected = true;}
    } else {
       if (selname[0].selected == false) {selname[0].selected = true};
    }
       }
    }
       }
   
   </script>
   VIEWJAVASCRIPT
 }  }
   
   #--- show scores for a section or whole class w/ option to change/update a score
 sub viewgrades {  sub viewgrades {
   my ($request) = @_;      my ($request) = shift;
   my $result='';      &viewgrades_js($request);
   
   #get resource reference      my ($symb,$url) = ($ENV{'form.symb'},$ENV{'form.url'}); 
   my ($symb,$url)=&get_symb_and_url($request);      #need to make sure we have the correct data for later EXT calls, 
   if (!$symb) {return '';}      #thus invalidate the cache
   #get classlist      &Apache::lonnet::devalidatecourseresdata(
   my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});                   $ENV{'course.'.$ENV{'request.course.id'}.'.num'},
   #print "Found $cdom:$cnum<br />";                   $ENV{'course.'.$ENV{'request.course.id'}.'.domain'});
   my ($classlist) = &getclasslist('all','0');      &Apache::lonnet::clear_EXT_cache_status();
   my $headerclr = '"#ccffff"';  
   my $cellclr = '"#ffffcc"';      my $result='<h3><font color="#339933">'.&mt('Manual Grading').'</font></h3>';
       $result.='<font size=+1><b>Current Resource: </b>'.$ENV{'form.probTitle'}.'</font>'."\n";
   #get list of parts for this problem  
   my (@parts) = sort(&getpartlist($url));      #view individual student submission form - called using Javascript viewOneStudent
       $result.=&jscriptNform($url,$symb);
   $request->print ("<h2><font color=\"#339933\">Manual Grading</font></h2>");  
       #beginning of class grading form
   #start the form      $result.= '<form action="/adm/grades" method="post" name="classgrade">'."\n".
   $result = '<form action="/adm/grades" method="post">'."\n".   '<input type="hidden" name="symb"    value="'.$symb.'" />'."\n".
     '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".   '<input type="hidden" name="url"     value="'.$url.'" />'."\n".
       '<input type="hidden" name="url" value="'.$url.'" />'."\n".  
  '<input type="hidden" name="command" value="editgrades" />'."\n".   '<input type="hidden" name="command" value="editgrades" />'."\n".
   '<input type="submit" name="submit" value="Submit Changes" />'."\n".   '<input type="hidden" name="section" value="'.$ENV{'form.section'}.'" />'."\n".
     '<table border=0><tr><td bgcolor="#777777">'."\n".   '<input type="hidden" name="saveState" value="'.$ENV{'form.saveState'}.'" />'."\n".
      '<table border=0>'."\n".   '<input type="hidden" name="Status" value="'.$ENV{'form.Status'}.'" />'."\n".
       '<tr bgcolor='.$headerclr.'><td><b>Username</b></td><td><b>Name</b></td><td><b>Domain</b></td>'."\n";   '<input type="hidden" name="probTitle" value="'.$ENV{'form.probTitle'}.'" />'."\n";
   foreach my $part (@parts) {  
      my $display=&Apache::lonnet::metadata($url,$part.'.display');      my $sectionClass;
      if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name'); }      if ($ENV{'form.section'} eq 'all') {
      $result.='<td><b>'.$display.'</b></td>'."\n";   $sectionClass='Class </h3>';
   }      } elsif ($ENV{'form.section'} eq 'none') {
   $result.='</tr>';   $sectionClass='Students in no Section </h3>';
   #get info for each student      } else {
   foreach my $student ( sort(@{ $$classlist{'all'} }) ) {   $sectionClass='Students in Section '.$ENV{'form.section'}.'</h3>';
     my $display=&viewstudentgrade($url,$symb,$ENV{'request.course.id'},$student,@parts);      }
 #      print "ID=$ENV{'request.course.id'}:STU=$student:DIS=$display:<br>\n";      $result.='<h3>Assign Common Grade To '.$sectionClass;
     $result.=&viewstudentgrade($url,$symb,$ENV{'request.course.id'},$student,@parts);      $result.= '<table border=0><tr><td bgcolor="#777777">'."\n".
   }   '<table border=0><tr bgcolor="#ffffdd"><td>';
   $result.='</table></td></tr></table>';      #radio buttons/text box for assigning points for a section or class.
   $result.='<input type="submit" name="submit" value="Submit Changes" /></form>';      #handles different parts of a problem
   $result.=&show_grading_menu_form($symb,$url);      my ($partlist,$handgrade) = &response_type($url,$symb);
   return $result;      my %weight = ();
       my $ctsparts = 0;
       $result.='<table border="0">';
       my %seen = ();
       for (sort keys(%$handgrade)) {
    my ($partid,$respid) = split (/_/,$_,2);
    next if $seen{$partid};
    $seen{$partid}++;
    my $handgrade=$$handgrade{$_};
    my $wgt = &Apache::lonnet::EXT('resource.'.$partid.'.weight',$symb);
    $weight{$partid} = $wgt eq '' ? '1' : $wgt;
   
    $result.='<input type="hidden" name="partid_'.
       $ctsparts.'" value="'.$partid.'" />'."\n";
    $result.='<input type="hidden" name="weight_'.
       $partid.'" value="'.$weight{$partid}.'" />'."\n";
    my $display_part=&get_display_part($partid,$url,$symb);
    $result.='<tr><td><b>Part:</b> '.$display_part.'&nbsp; &nbsp;<b>Point:</b> </td><td>';
    $result.='<table border="0"><tr>';  
    my $ctr = 0;
    while ($ctr<=$weight{$partid}) { # display radio buttons in a nice table 10 across
       $result.= '<td><input type="radio" name="RADVAL_'.$partid.'" '.
    'onclick="javascript:writePoint(\''.$partid.'\','.$weight{$partid}.
    ','.$ctr.')" />'.$ctr."</td>\n";
       $result.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');
       $ctr++;
    }
    $result.='</tr></table>';
    $result.= '</td><td><b> or </b><input type="text" name="TEXTVAL_'.
       $partid.'" size="4" '.'onChange="javascript:writePoint(\''.
    $partid.'\','.$weight{$partid}.',\'textval\')" /> /'.
       $weight{$partid}.' (problem weight)</td>'."\n";
    $result.= '</td><td><select name="SELVAL_'.$partid.'"'.
       'onChange="javascript:writeRadText(\''.$partid.'\','.
    $weight{$partid}.')"> '.
       '<option selected="on"> </option>'.
       '<option>excused</option>'.
       '<option>reset status</option></select></td></tr>'."\n";
    $ctsparts++;
       }
       $result.='</table>'.'</td></tr></table>'.'</td></tr></table>'."\n".
    '<input type="hidden" name="totalparts" value="'.$ctsparts.'" />';
       $result.='<input type="button" value="Reset" '.
    'onClick="javascript:resetEntry('.$ctsparts.');" TARGET=_self>';
   
       #table listing all the students in a section/class
       #header of table
       $result.= '<h3>Assign Grade to Specific Students in '.$sectionClass;
       $result.= '<table border=0><tr><td bgcolor="#777777">'."\n".
    '<table border=0><tr bgcolor="#deffff"><td>&nbsp;<b>No.</b>&nbsp;</td>'.
    '<td>'.&nameUserString('header')."</td>\n";
       my (@parts) = sort(&getpartlist($url,$symb));
       foreach my $part (@parts) {
    my $display=&Apache::lonnet::metadata($url,$part.'.display');
    $display =~ s|^Number of Attempts|Tries<br />|; # makes the column narrower
    if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name'); }
    my ($partid) = &split_part_type($part);
    my $display_part=&get_display_part($partid,$url,$symb);
    if ($display =~ /^Partial Credit Factor/) {
       $result.='<td><b>Score Part:</b> '.$display_part.
    ' <br /><b>(weight = '.$weight{$partid}.')</b></td>'."\n";
       next;
    } else {
       $display =~s/\[Part: \Q$partid\E\]/Part:<\/b> $display_part/;
    }
    $display =~ s|Problem Status|Grade Status<br />|;
    $result.='<td><b>'.$display.'</td>'."\n";
       }
       $result.='</tr>';
   
       #get info for each student
       #list all the students - with points and grade status
       my (undef,undef,$fullname) = &getclasslist($ENV{'form.section'},'1');
       my $ctr = 0;
       foreach (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {
    my $uname = $_;
    $uname=~s/:/_/;
    $result.='<input type="hidden" name="ctr'.$ctr.'" value="'.$uname.'" />'."\n";
    $ctr++;
    $result.=&viewstudentgrade($url,$symb,$ENV{'request.course.id'},
      $_,$$fullname{$_},\@parts,\%weight,$ctr);
       }
       $result.='</table></td></tr></table>';
       $result.='<input type="hidden" name="total" value="'.$ctr.'" />'."\n";
       $result.='<input type="button" value="Save" '.
    'onClick="javascript:submit();" TARGET=_self /></form>'."\n";
       if (scalar(%$fullname) eq 0) {
    my $colspan=3+scalar(@parts);
    $result='<font color="red">There are no students in section "'.$ENV{'form.section'}.
       '" with enrollment status "'.$ENV{'form.Status'}.'" to modify or grade.</font>';
       }
       $result.=&show_grading_menu_form($symb,$url);
       return $result;
 }  }
   
   #--- call by previous routine to display each student
   sub viewstudentgrade {
       my ($url,$symb,$courseid,$student,$fullname,$parts,$weight,$ctr) = @_;
       my ($uname,$udom) = split(/:/,$student);
       $student=~s/:/_/;
       my %record=&Apache::lonnet::restore($symb,$courseid,$udom,$uname);
       my $result='<tr bgcolor="#ffffdd"><td align="right">'.$ctr.'&nbsp;</td><td>&nbsp;'.
    '<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
    '\')"; TARGET=_self>'.$fullname.'</a> '.
    '<font color="#999999">('.$uname.($ENV{'user.domain'} eq $udom ? '' : ':'.$udom).')</font></td>'."\n";
       foreach my $apart (@$parts) {
    my ($part,$type) = &split_part_type($apart);
    my $score=$record{"resource.$part.$type"};
    if ($type eq 'awarded') {
       my $pts = $score eq '' ? '' : $score*$$weight{$part};
       $result.='<input type="hidden" name="'.
    'GD_'.$student.'_'.$part.'_awarded_s" value="'.$pts.'" />'."\n";
       $result.='<td align="middle"><input type="text" name="'.
    'GD_'.$student.'_'.$part.'_awarded" '.
    'onChange="javascript:changeSelect(\''.$part.'\',\''.$student.
    '\')" value="'.$pts.'" size="4" /></td>'."\n";
    } elsif ($type eq 'solved') {
       my ($status,$foo)=split(/_/,$score,2);
       $status = 'nothing' if ($status eq '');
       $result.='<input type="hidden" name="'.'GD_'.$student.'_'.
    $part.'_solved_s" value="'.$status.'" />'."\n";
       $result.='<td align="middle">&nbsp;<select name="'.
    'GD_'.$student.'_'.$part.'_solved" '.
    'onChange="javascript:changeOneScore(\''.$part.'\',\''.$student.'\')" >'."\n";
       $result.= (($status eq 'excused') ? '<option> </option><option selected="on">excused</option>' 
    : '<option selected="on"> </option><option>excused</option>')."\n";
       $result.='<option>reset status</option>';
       $result.="</select>&nbsp;</td>\n";
    } else {
       $result.='<input type="hidden" name="'.
    'GD_'.$student.'_'.$part.'_'.$type.'_s" value="'.$score.'" />'.
       "\n";
       $result.='<td align="middle"><input type="text" name="'.
    'GD_'.$student.'_'.$part.'_'.$type.'" '.
    'value="'.$score.'" size="4" /></td>'."\n";
    }
       }
       $result.='</tr>';
       return $result;
   }
   
   #--- change scores for all the students in a section/class
   #    record does not get update if unchanged
 sub editgrades {  sub editgrades {
   my ($request) = @_;      my ($request) = @_;
   my $result='';  
   
   my $symb=$ENV{'form.symb'};      my $symb=$ENV{'form.symb'};
   if ($symb eq '') { $request->print("Unable to handle ambiguous references:$symb:$ENV{'form.url'}"); return ''; }      my $url =$ENV{'form.url'};
   my $url=$ENV{'form.url'};      my $title='<h3><font color="#339933">Current Grade Status</font></h3>';
   #get classlist      $title.='<font size=+1><b>Current Resource: </b>'.$ENV{'form.probTitle'}.'</font><br />'."\n";
 #  my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});      $title.='<font size=+1><b>Section: </b>'.$ENV{'form.section'}.'</font>'."\n";
   #print "Found $cdom:$cnum<br />";  
   my ($classlist) = &getclasslist('all','0');      my $result= '<table border="0"><tr><td bgcolor="#777777">'."\n";
       $result.= '<table border="0"><tr bgcolor="#deffff">'.
   #get list of parts for this problem   '<td rowspan=2 valign="center">&nbsp;<b>No.</b>&nbsp;</td>'.
   my (@parts) = &getpartlist($url);   '<td rowspan=2 valign="center">'.&nameUserString('header')."</td>\n";
   
   $result.='<form action="/adm/grades" method="post">'."\n".      my %scoreptr = (
     '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".      'correct'  =>'correct_by_override',
       '<input type="hidden" name="url" value="'.$url.'" />'."\n".      'incorrect'=>'incorrect_by_override',
  '<input type="hidden" name="command" value="viewgrades" />'."\n".      'excused'  =>'excused',
   '<input type="submit" name="submit" value="See Grades" /> <br />'."\n";      'ungraded' =>'ungraded_attempted',
       'nothing'  => '',
       );
       my ($classlist,undef,$fullname) = &getclasslist($ENV{'form.section'},'0');
   
       my (@partid);
       my %weight = ();
       my %columns = ();
       my ($i,$ctr,$count,$rec_update) = (0,0,0,0);
   
       my (@parts) = sort(&getpartlist($url,$symb));
       my $header;
       while ($ctr < $ENV{'form.totalparts'}) {
    my $partid = $ENV{'form.partid_'.$ctr};
    push @partid,$partid;
    $weight{$partid} = $ENV{'form.weight_'.$partid};
    $ctr++;
       }
       foreach my $partid (@partid) {
    $header .= '<td align="center">&nbsp;<b>Old Score</b>&nbsp;</td>'.
       '<td align="center">&nbsp;<b>New Score</b>&nbsp;</td>';
    $columns{$partid}=2;
    foreach my $stores (@parts) {
       my ($part,$type) = &split_part_type($stores);
       if ($part !~ m/^\Q$partid\E/) { next;}
       if ($type eq 'awarded' || $type eq 'solved') { next; }
       my $display=&Apache::lonnet::metadata($url,$stores.'.display');
       $display =~ s/\[Part: (\w)+\]//;
       $display =~ s/Number of Attempts/Tries/;
       $header .= '<td align="center">&nbsp;<b>Old '.$display.'</b>&nbsp;</td>'.
    '<td align="center">&nbsp;<b>New '.$display.'</b>&nbsp;</td>';
       $columns{$partid}+=2;
    }
       }
       foreach my $partid (@partid) {
    my $display_part=&get_display_part($partid,$url,$symb);
    $result .= '<td colspan="'.$columns{$partid}.
       '" align="center"><b>Part:</b> '.$display_part.
       ' (Weight = '.$weight{$partid}.')</td>';
   
   foreach my $student ( sort(@{ $$classlist{'all'} }) ) {      }
     $result.=&setstudentgrade($url,$symb,$ENV{'request.course.id'},$student,@parts);      $result .= '</tr><tr bgcolor="#deffff">';
   }      $result .= $header;
       $result .= '</tr>'."\n";
       my $noupdate;
       my ($updateCtr,$noupdateCtr) = (1,1);
       for ($i=0; $i<$ENV{'form.total'}; $i++) {
    my $line;
    my $user = $ENV{'form.ctr'.$i};
    my $usercolon = $user;
    $usercolon =~s/_/:/;
    my ($uname,$udom)=split(/_/,$user);
    my %newrecord;
    my $updateflag = 0;
    $line .= '<td>'.&nameUserString(undef,$$fullname{$usercolon},$uname,$udom).'</td>';
    my $usec=$classlist->{"$uname:$udom"}[5];
    if (!&canmodify($usec)) {
       my $numcols=scalar(@partid)*4+2;
       $noupdate.=$line."<td colspan=\"$numcols\"><font color=\"red\">Not allowed to modify student</font></td></tr>";
       next;
    }
    foreach (@partid) {
       my $old_aw    = $ENV{'form.GD_'.$user.'_'.$_.'_awarded_s'};
       my $old_part_pcr = $old_aw/($weight{$_} ne '0' ? $weight{$_}:1);
       my $old_part  = $old_aw eq '' ? '' : $old_part_pcr;
       my $old_score = $scoreptr{$ENV{'form.GD_'.$user.'_'.$_.'_solved_s'}};
   
       my $awarded   = $ENV{'form.GD_'.$user.'_'.$_.'_awarded'};
       my $pcr       = $awarded/($weight{$_} ne '0' ? $weight{$_} : 1);
       my $partial   = $awarded eq '' ? '' : $pcr;
       my $score;
       if ($partial eq '') {
    $score = $scoreptr{$ENV{'form.GD_'.$user.'_'.$_.'_solved_s'}};
       } elsif ($partial > 0) {
    $score = 'correct_by_override';
       } elsif ($partial == 0) {
    $score = 'incorrect_by_override';
       }
       my $dropMenu = $ENV{'form.GD_'.$user.'_'.$_.'_solved'};
       $score = 'excused' if (($dropMenu eq 'excused') && ($score ne 'excused'));
   
       if ($dropMenu eq 'reset status' &&
    $old_score ne '') { # ignore if no previous attempts => nothing to reset
    $newrecord{'resource.'.$_.'.tries'} = 0;
    $newrecord{'resource.'.$_.'.solved'} = '';
    $newrecord{'resource.'.$_.'.award'} = '';
    $newrecord{'resource.'.$_.'.awarded'} = 0;
    $newrecord{'resource.'.$_.'.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
    $updateflag = 1;
       } elsif (!($old_part eq $partial && $old_score eq $score)) {
    $updateflag = 1;
    $newrecord{'resource.'.$_.'.awarded'}  = $partial if $partial ne '';
    $newrecord{'resource.'.$_.'.solved'}   = $score;
    $rec_update++;
       }
   
       $line .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
    '<td align="center">'.$awarded.
    ($score eq 'excused' ? $score : '').'&nbsp;</td>';
   
   
       my $partid=$_;
       foreach my $stores (@parts) {
    my ($part,$type) = &split_part_type($stores);
    if ($part !~ m/^\Q$partid\E/) { next;}
    if ($type eq 'awarded' || $type eq 'solved') { next; }
    my $old_aw    = $ENV{'form.GD_'.$user.'_'.$part.'_'.$type.'_s'};
    my $awarded   = $ENV{'form.GD_'.$user.'_'.$part.'_'.$type};
    if ($awarded ne '' && $awarded ne $old_aw) {
       $newrecord{'resource.'.$part.'.'.$type}= $awarded;
       $newrecord{'resource.'.$part.'.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
       $updateflag=1;
    }
    $line .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
       '<td align="center">'.$awarded.'&nbsp;</td>';
       }
    }
    $line.='</tr>'."\n";
    if ($updateflag) {
       $count++;
       &Apache::lonnet::cstore(\%newrecord,$symb,$ENV{'request.course.id'},
       $udom,$uname);
       $result.='<tr bgcolor="#ffffde"><td align="right">&nbsp;'.$updateCtr.'&nbsp;</td>'.$line;
       $updateCtr++;
    } else {
       $noupdate.='<tr bgcolor="#ffffde"><td align="right">&nbsp;'.$noupdateCtr.'&nbsp;</td>'.$line;
       $noupdateCtr++;
    }
       }
       if ($noupdate) {
   # my $numcols=(scalar(@partid)*(scalar(@parts)-1)*2)+3;
    my $numcols=scalar(@partid)*4+2;
    $result .= '<tr bgcolor="#ffffff"><td align="center" colspan="'.$numcols.'">No Changes Occurred For the Students Below</td></tr><tr bgcolor="#ffffde">'.$noupdate;
       }
       $result .= '</table></td></tr></table>'."\n".
    &show_grading_menu_form ($symb,$url);
       my $msg = '<br /><b>Number of records updated = '.$rec_update.
    ' for '.$count.' student'.($count <= 1 ? '' : 's').'.</b><br />'.
    '<b>Total number of students = '.$ENV{'form.total'}.'</b><br />';
       return $title.$msg.$result;
   }
   
   $result.='<input type="submit" name="submit" value="See Grades" /></table></form>';  sub split_part_type {
   return $result;      my ($partstr) = @_;
       my ($temp,@allparts)=split(/_/,$partstr);
       my $type=pop(@allparts);
       my $part=join('.',@allparts);
       return ($part,$type);
 }  }
   
   #------------- end of section for handling grading by section/class ---------
   #
   #----------------------------------------------------------------------------
   
   
   #----------------------------------------------------------------------------
   #
   #-------------------------- Next few routines handles grading by csv upload
   #
   #--- Javascript to handle csv upload
 sub csvupload_javascript_reverse_associate {  sub csvupload_javascript_reverse_associate {
   return(<<ENDPICK);    return(<<ENDPICK);
   function verify(vf) {    function verify(vf) {
Line 1047  ENDPICK Line 2726  ENDPICK
 }  }
   
 sub csvuploadmap_header {  sub csvuploadmap_header {
   my ($request,$symb,$url,$datatoken,$distotal)= @_;      my ($request,$symb,$url,$datatoken,$distotal)= @_;
   my $result;      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();      }
   }  
   $request->print(<<ENDPICK);      my ($result) = &showResourceInfo($url,$ENV{'form.probTitle'});
   
       $request->print(<<ENDPICK);
 <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">  <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
 <h3>Uploading Class Grades for resource $url</h3>  <h3><font color="#339933">Uploading Class Grades</font></h3>
   $result
 <hr>  <hr>
 <h3>Identify fields</h3>  <h3>Identify fields</h3>
 Total number of records found in file: $distotal <hr />  Total number of records found in file: $distotal <hr />
Line 1073  to this page if the data selected is ins Line 2755  to this page if the data selected is ins
                                        value="$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="url"        value="$url" />
   <input type="hidden" name="saveState"  value="$ENV{'form.saveState'}" />
   <input type="hidden" name="probTitle"  value="$ENV{'form.probTitle'}" />
 <input type="hidden" name="command"    value="csvuploadassign" />  <input type="hidden" name="command"    value="csvuploadassign" />
 <hr />  <hr />
 <script type="text/javascript" language="Javascript">  <script type="text/javascript" language="Javascript">
 $javascript  $javascript
 </script>  </script>
 ENDPICK  ENDPICK
   return '';      return '';
   
 }  }
   
 sub csvupload_fields {  sub csvupload_fields {
   my ($url) = @_;      my ($url,$symb) = @_;
   my (@parts) = &getpartlist($url);      my (@parts) = &getpartlist($url,$symb);
   my @fields=(['username','Student Username'],['domain','Student Domain']);      my @fields=(['username','Student Username'],['domain','Student Domain']);
   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');
     my $name=$part;   my $name=$part;
     if  (!$display) { $display = $name; }   if  (!$display) { $display = $name; }
     @datum=($name,$display);   @datum=($name,$display);
     push(@fields,\@datum);   push(@fields,\@datum);
   }      }
   return (@fields);      return (@fields);
 }  }
   
 sub csvuploadmap_footer {  sub csvuploadmap_footer {
   my ($request,$i,$keyfields) =@_;      my ($request,$i,$keyfields) =@_;
   $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" />
Line 1109  sub csvuploadmap_footer { Line 2793  sub csvuploadmap_footer {
 ENDPICK  ENDPICK
 }  }
   
   sub upcsvScores_form {
       my ($request) = shift;
       my ($symb,$url)=&get_symb_and_url($request);
       if (!$symb) {return '';}
       my $result =<<CSVFORMJS;
   <script type="text/javascript" language="javascript">
       function checkUpload(formname) {
    if (formname.upfile.value == "") {
       alert("Please use the browse button to select a file from your local directory.");
       return false;
    }
    formname.submit();
       }
       </script>
   CSVFORMJS
       $ENV{'form.probTitle'} = &Apache::lonnet::gettitle($symb);
       my ($table) = &showResourceInfo($url,$ENV{'form.probTitle'});
       $result.=$table;
       $result.='<br /><table width=100% border=0><tr><td bgcolor="#777777">'."\n";
       $result.='<table width=100% border=0><tr bgcolor="#e6ffff"><td>'."\n";
       $result.='&nbsp;<b>Specify a file containing the class scores for current resource'.
    '.</b></td></tr>'."\n";
       $result.='<tr bgcolor=#ffffe6><td>'."\n";
       my $upfile_select=&Apache::loncommon::upfile_select_html();
       $result.=<<ENDUPFORM;
   <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
   <input type="hidden" name="symb" value="$symb" />
   <input type="hidden" name="url" value="$url" />
   <input type="hidden" name="command" value="csvuploadmap" />
   <input type="hidden" name="probTitle" value="$ENV{'form.probTitle'}" />
   <input type="hidden" name="saveState"  value="$ENV{'form.saveState'}" />
   $upfile_select
   <br /><input type="button" onClick="javascript:checkUpload(this.form);" value="Upload Scores" />
   
   </form>
   ENDUPFORM
       $result.='</td></tr></table>'."\n";
       $result.='</td></tr></table><br /><br />'."\n";
       $result.=&show_grading_menu_form($symb,$url);
       return $result;
   }
   
   
 sub csvuploadmap {  sub csvuploadmap {
   my ($request)= @_;      my ($request)= @_;
   my ($symb,$url)=&get_symb_and_url($request);      my ($symb,$url)=&get_symb_and_url($request);
   if (!$symb) {return '';}      if (!$symb) {return '';}
   my $datatoken;  
   if (!$ENV{'form.datatoken'}) {      my $datatoken;
     $datatoken=&Apache::loncommon::upfile_store($request);      if (!$ENV{'form.datatoken'}) {
   } else {   $datatoken=&Apache::loncommon::upfile_store($request);
     $datatoken=$ENV{'form.datatoken'};      } else {
     &Apache::loncommon::load_tmp_file($request);   $datatoken=$ENV{'form.datatoken'};
   }   &Apache::loncommon::load_tmp_file($request);
   my @records=&Apache::loncommon::upfile_record_sep();  
   &csvuploadmap_header($request,$symb,$url,$datatoken,$#records+1);  
   my $i;  
   my $keyfields;  
   if (@records) {  
     my @fields=&csvupload_fields($url);  
     if ($ENV{'form.upfile_associate'} eq 'reverse') {  
       &Apache::loncommon::csv_print_samples($request,\@records);  
       $i=&Apache::loncommon::csv_print_select_table($request,\@records,  
     \@fields);  
       foreach (@fields) { $keyfields.=$_->[0].','; }  
       chop($keyfields);  
     } else {  
       unshift(@fields,['none','']);  
       $i=&Apache::loncommon::csv_samples_select_table($request,\@records,  
       \@fields);  
       my %sone=&Apache::loncommon::record_sep($records[0]);  
       $keyfields=join(',',sort(keys(%sone)));  
     }      }
   }      my @records=&Apache::loncommon::upfile_record_sep();
   &csvuploadmap_footer($request,$i,$keyfields);      &csvuploadmap_header($request,$symb,$url,$datatoken,$#records+1);
   return '';      my ($i,$keyfields);
       if (@records) {
    my @fields=&csvupload_fields($url,$symb);
   
    if ($ENV{'form.upfile_associate'} eq 'reverse') {
       &Apache::loncommon::csv_print_samples($request,\@records);
       $i=&Apache::loncommon::csv_print_select_table($request,\@records,
     \@fields);
       foreach (@fields) { $keyfields.=$_->[0].','; }
       chop($keyfields);
    } else {
       unshift(@fields,['none','']);
       $i=&Apache::loncommon::csv_samples_select_table($request,\@records,
       \@fields);
       my %sone=&Apache::loncommon::record_sep($records[0]);
       $keyfields=join(',',sort(keys(%sone)));
    }
       }
       &csvuploadmap_footer($request,$i,$keyfields);
       $request->print(&show_grading_menu_form($symb,$url));
   
       return '';
 }  }
   
 sub csvuploadassign {  sub csvuploadassign {
   my ($request)= @_;      my ($request)= @_;
   my ($symb,$url)=&get_symb_and_url($request);      my ($symb,$url)=&get_symb_and_url($request);
   if (!$symb) {return '';}      if (!$symb) {return '';}
   &Apache::loncommon::load_tmp_file($request);      &Apache::loncommon::load_tmp_file($request);
   my @gradedata=&Apache::loncommon::upfile_record_sep();      my @gradedata = &Apache::loncommon::upfile_record_sep();
   my @keyfields = split(/\,/,$ENV{'form.keyfields'});      my @keyfields = split(/\,/,$ENV{'form.keyfields'});
   my %fields=();      my %fields=();
   for (my $i=0; $i<=$ENV{'form.nfields'}; $i++) {      for (my $i=0; $i<=$ENV{'form.nfields'}; $i++) {
     if ($ENV{'form.upfile_associate'} eq 'reverse') {   if ($ENV{'form.upfile_associate'} eq 'reverse') {
       if ($ENV{'form.f'.$i} ne 'none') {      if ($ENV{'form.f'.$i} ne 'none') {
  $fields{$keyfields[$i]}=$ENV{'form.f'.$i};   $fields{$keyfields[$i]}=$ENV{'form.f'.$i};
       }      }
    } else {
       if ($ENV{'form.f'.$i} ne 'none') {
    $fields{$ENV{'form.f'.$i}}=$keyfields[$i];
       }
    }
       }
       $request->print('<h3>Assigning Grades</h3>');
       my $courseid=$ENV{'request.course.id'};
       my ($classlist) = &getclasslist('all',0);
       my @notallowed;
       my @skipped;
       my $countdone=0;
       foreach my $grade (@gradedata) {
    my %entries=&Apache::loncommon::record_sep($grade);
    my $username=$entries{$fields{'username'}};
    $username=~s/\s//g;
    my $domain=$entries{$fields{'domain'}};
    $domain=~s/\s//g;
    if (!exists($$classlist{"$username:$domain"})) {
       push(@skipped,"$username:$domain");
       next;
    }
    my $usec=$classlist->{"$username:$domain"}[5];
    if (!&canmodify($usec)) {
       push(@notallowed,"$username:$domain");
       next;
    }
    my %grades;
    foreach my $dest (keys(%fields)) {
       if ($dest eq 'username' || $dest eq 'domain') { next; }
       if ($entries{$fields{$dest}} eq '') { next; }
       my $store_key=$dest;
       $store_key=~s/^stores/resource/;
       $store_key=~s/_/\./g;
       $grades{$store_key}=$entries{$fields{$dest}};
    }
    $grades{"resource.regrader"}="$ENV{'user.name'}:$ENV{'user.domain'}";
    &Apache::lonnet::cstore(\%grades,$symb,$ENV{'request.course.id'},
    $domain,$username);
    $request->print('.');
    $request->rflush();
    $countdone++;
       }
       $request->print("<br />Stored $countdone students\n");
       if (@skipped) {
    $request->print('<p<font size="+1"><b>Skipped Students</b></font></p>');
    foreach my $student (@skipped) { $request->print("$student<br />\n"); }
       }
       if (@notallowed) {
    $request->print('<p><font size="+1" color="red"><b>Students Not Allowed to Modify</b></font></p>');
    foreach my $student (@notallowed) { $request->print("$student<br />\n"); }
       }
       $request->print("<br />\n");
       $request->print(&show_grading_menu_form($symb,$url));
       return '';
   }
   #------------- end of section for handling csv file upload ---------
   #
   #-------------------------------------------------------------------
   #
   #-------------- Next few routines handle grading by page/sequence
   #
   #--- Select a page/sequence and a student to grade
   sub pickStudentPage {
       my ($request) = shift;
   
       $request->print(<<LISTJAVASCRIPT);
   <script type="text/javascript" language="javascript">
   
   function checkPickOne(formname) {
       if (radioSelection(formname.student) == null) {
    alert("Please select the student you wish to grade.");
    return;
       }
       ptr = pullDownSelection(formname.selectpage);
       formname.page.value = formname["page"+ptr].value;
       formname.title.value = formname["title"+ptr].value;
       formname.submit();
   }
   
   </script>
   LISTJAVASCRIPT
       &commonJSfunctions($request);
       my ($symb,$url) = &get_symb_and_url($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 $result='<h3><font color="#339933">&nbsp;'.
    'Manual Grading by Page or Sequence</font></h3>';
   
       $result.='<form action="/adm/grades" method="post" name="displayPage">'."\n";
       $result.='&nbsp;<b>Problems from:</b> <select name="selectpage">'."\n";
       my ($titles,$symbx) = &getSymbMap($request);
       my ($curpage) =&Apache::lonnet::decode_symb($symb); 
   #    my ($curpage,$mapId) =&Apache::lonnet::decode_symb($symb); 
   #    my $type=($curpage =~ /\.(page|sequence)/);
       my $ctr=0;
       foreach (@$titles) {
    my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
    $result.='<option value="'.$ctr.'" '.
       ($$symbx{$_} =~ /$curpage$/ ? 'selected="on"' : '').
       '>'.$showtitle.'</option>'."\n";
    $ctr++;
       }
       $result.= '</select>'."<br>\n";
       $ctr=0;
       foreach (@$titles) {
    my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
    $result.='<input type="hidden" name="page'.$ctr.'" value="'.$$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.='&nbsp;<b>View Problems Text: </b><input type="radio" name="vProb" value="no" checked="on" /> no '."\n".
    '<input type="radio" name="vProb" value="yes" /> yes '."<br>\n";
   
       $result.='&nbsp;<b>Submission Details: </b>'.
    '<input type="radio" name="lastSub" value="none" /> none'."\n".
    '<input type="radio" name="lastSub" value="datesub" checked /> by dates and submissions'."\n".
    '<input type="radio" name="lastSub" value="all" /> all details'."\n";
   
       $result.='<input type="hidden" name="section"     value="'.$getsec.'" />'."\n".
    '<input type="hidden" name="Status"  value="'.$ENV{'form.Status'}.'" />'."\n".
    '<input type="hidden" name="command" value="displayPage" />'."\n".
    '<input type="hidden" name="url"     value="'.$url.'" />'."\n".
    '<input type="hidden" name="symb"    value="'.$symb.'" />'."\n".
    '<input type="hidden" name="saveState" value="'.$ENV{'form.saveState'}.'" />'."<br />\n";
   
       $result.='&nbsp;<input type="button" '.
    'onClick="javascript:checkPickOne(this.form);"value="Next->" /><br />'."\n";
   
       $request->print($result);
   
       my $studentTable.='&nbsp;<b>Select a student you wish to grade and then click on the Next button.</b><br>'.
    '<table border="0"><tr><td bgcolor="#777777">'.
    '<table border="0"><tr bgcolor="#e6ffff">'.
    '<td align="right">&nbsp;<b>No.</b></td>'.
    '<td>'.&nameUserString('header').'</td>'.
    '<td align="right">&nbsp;<b>No.</b></td>'.
    '<td>'.&nameUserString('header').'</td></tr>';
    
       my (undef,undef,$fullname) = &getclasslist($getsec,'1');
       my $ptr = 1;
       foreach my $student (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {
    my ($uname,$udom) = split(/:/,$student);
    $studentTable.=($ptr%2 == 1 ? '<tr bgcolor="#ffffe6">' : '</td>');
    $studentTable.='<td align="right">'.$ptr.'&nbsp;</td>';
    $studentTable.='<td>&nbsp;<input type="radio" name="student" value="'.$student.'" /> '
       .&nameUserString(undef,$$fullname{$student},$uname,$udom)."\n";
    $studentTable.=($ptr%2 == 0 ? '</td></tr>' : '');
    $ptr++;
       }
       $studentTable.='</td><td>&nbsp;</td><td>&nbsp;' if ($ptr%2 == 0);
       $studentTable.='</td></tr></table></td></tr></table>'."\n";
       $studentTable.='<input type="button" '.
    'onClick="javascript:checkPickOne(this.form);"value="Next->" /></form>'."\n";
   
       $studentTable.=&show_grading_menu_form($symb,$url);
       $request->print($studentTable);
   
       return '';
   }
   
   sub getSymbMap {
       my ($request) = @_;
       my $navmap = Apache::lonnavmaps::navmap->new();
   
       my %symbx = ();
       my @titles = ();
       my $minder = 0;
   
       # Gather every sequence that has problems.
       my @sequences = $navmap->retrieveResources(undef, sub { shift->is_map(); }, 1);
       for my $sequence ($navmap->getById('0.0'), @sequences) {
    if ($navmap->hasResource($sequence, sub { shift->is_problem(); }, 0) ) {
       my $title = $minder.'.'.$sequence->compTitle();
       push @titles, $title; # minder in case two titles are identical
       $symbx{$title} = $sequence->symb();
       $minder++;
    }
       }
   
       $navmap->untieHashes();
       return \@titles,\%symbx;
   }
   
   #
   #--- Displays a page/sequence w/wo problems, w/wo submissions
   sub displayPage {
       my ($request) = shift;
   
       my ($symb,$url) = &get_symb_and_url($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 $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];
   
       #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)) {
    $request->print('<font color="red">Unable to view requested student.('.$ENV{'form.student'}.')</font>');
    $request->print(&show_grading_menu_form($symb,$url));
    return;
       }
       my $result='<h3><font color="#339933">&nbsp;'.$ENV{'form.title'}.'</font></h3>';
       $result.='<h3>&nbsp;Student: '.&nameUserString(undef,$$fullname{$ENV{'form.student'}},$uname,$udom).
    '</h3>'."\n";
       &sub_page_js($request);
       $request->print($result);
   
       my $navmap = Apache::lonnavmaps::navmap->new();
       my ($mapUrl, $id, $resUrl)=&Apache::lonnet::decode_symb($ENV{'form.page'});
       my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
   
       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="url"     value="'.$url.'" />'."\n".
    '<input type="hidden" name="symb"    value="'.$symb.'" />'."\n".
    '<input type="hidden" name="overRideScore" value="no" />'."\n".
    '<input type="hidden" name="saveState" value="'.$ENV{'form.saveState'}.'" />'."\n";
   
       my $checkIcon = '<img src="'.$request->dir_config('lonIconsURL').
    '/check.gif" height="16" border="0" />';
   
       $studentTable.='&nbsp;<b>Note:</b> Problems graded correct by the computer are marked with a '.$checkIcon.
    ' symbol.'."\n".
    '<table border="0"><tr><td bgcolor="#777777">'.
    '<table border="0"><tr bgcolor="#e6ffff">'.
    '<td align="center"><b>&nbsp;Prob.&nbsp;</b></td>'.
    '<td><b>&nbsp;'.($ENV{'form.vProb'} eq 'no' ? 'Title' : 'Problem Text').'/Grade</b></td></tr>';
   
       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_problem()) {
       my $parts = $curRes->parts();
               my $title = $curRes->compTitle();
       my $symbx = $curRes->symb();
       $studentTable.='<tr bgcolor="#ffffe6"><td align="center" valign="top" >'.$prob.
    (scalar(@{$parts}) == 1 ? '' : '<br>('.scalar(@{$parts}).'&nbsp;parts)').'</td>';
       $studentTable.='<td valign="top">';
       if ($ENV{'form.vProb'} eq 'yes' ) {
    $studentTable.=&show_problem($request,$symbx,$uname,$udom,1,
        undef,'both');
       } else {
    my $companswer = &Apache::loncommon::get_student_answers($symbx,$uname,$udom,$ENV{'request.course.id'});
    $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>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 '') {
       $studentTable.='<br />&nbsp;<font color="red">No recorded submission for this problem</font><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' : '');
    $studentTable.=&Apache::loncommon::get_previous_attempt($symbx,$uname,$udom,
    $ENV{'request.course.id'},
    '','.submission');
    
       }
       if (&canmodify($usec)) {
    foreach my $partid (@{$parts}) {
       $studentTable.=&gradeBox($request,$symbx,$uname,$udom,$question,$partid,\%record);
       $studentTable.='<input type="hidden" name="q_'.$question.'" value="'.$partid.'" />'."\n";
       $question++;
    }
    $prob++;
       }
       $studentTable.='</td></tr>';
   
    }
           $curRes = $iterator->next();
       }
   
       $navmap->untieHashes();
   
       $studentTable.='</td></tr></table></td></tr></table>'."\n".
    '<input type="button" value="Save" '.
    'onClick="javascript:checkSubmitPage(this.form,'.$question.');" TARGET=_self />'.
    '</form>'."\n";
       $studentTable.=&show_grading_menu_form($symb,$url);
       $request->print($studentTable);
   
       return '';
   }
   
   sub displaySubByDates {
       my ($symb,$record,$parts,$responseType,$checkIcon,$uname,$udom) = @_;
       my $studentTable='<table border="0" width="100%"><tr><td bgcolor="#777777">'.
    '<table border="0" width="100%"><tr bgcolor="#e6ffff">'.
    '<td><b>Date/Time</b></td>'.
    '<td><b>Submission</b></td>'.
    '<td><b>Status&nbsp;</b></td></tr>';
       my ($version);
       my %mark;
       my %orders;
       $mark{'correct_by_student'} = $checkIcon;
       if (!exists($$record{'1:timestamp'})) {
    return '<br />&nbsp;<font color="red">Nothing submitted - no attempts</font><br />';
       }
       for ($version=1;$version<=$$record{'version'};$version++) {
    my $timestamp = scalar(localtime($$record{$version.':timestamp'}));
    $studentTable.='<tr bgcolor="#ffffff" valign="top"><td>'.$timestamp.'</td>';
    my @versionKeys = split(/\:/,$$record{$version.':keys'});
    my @displaySub = ();
    foreach my $partid (@{$parts}) {
       my @matchKey = sort(grep /^resource\.\Q$partid\E\..*?\.submission$/,@versionKeys);
   #    next if ($$record{"$version:resource.$partid.solved"} eq '');
       my $display_part=&get_display_part($partid,undef,$symb);
       foreach my $matchKey (@matchKey) {
    if (exists($$record{$version.':'.$matchKey}) &&
       $$record{$version.':'.$matchKey} ne '') {
       my ($responseId)=($matchKey=~ /^resource\.\Q$partid\E\.(.*?)\.submission$/);
       $displaySub[0].='<b>Part:</b>&nbsp;'.$display_part.'&nbsp;';
       $displaySub[0].='<font color="#999999">(ID&nbsp;'.
    $responseId.')</font>&nbsp;<b>';
       if ($$record{"$version:resource.$partid.tries"} eq '') {
    $displaySub[0].='Trial&nbsp;not&nbsp;counted';
       } else {
    $displaySub[0].='Trial&nbsp;'.
       $$record{"$version:resource.$partid.tries"};
       }
       my $responseType=$responseType->{$partid}->{$responseId};
       if (!exists($orders{$partid})) { $orders{$partid}={}; }
       if (!exists($orders{$partid}->{$responseId})) {
    $orders{$partid}->{$responseId}=
       &get_order($partid,$responseId,$symb,$uname,$udom);
       }
       $displaySub[0].='</b>&nbsp; '.
    &cleanRecord($$record{$version.':'.$matchKey},$responseType,$symb,$partid,$responseId,$record,$orders{$partid}->{$responseId},"$version:").'<br />';
    }
       }
       if (exists $$record{"$version:resource.$partid.award"}) {
    $displaySub[1].='<b>Part:</b>&nbsp;'.$display_part.' &nbsp;'.
       lc($$record{"$version:resource.$partid.award"}).' '.
       $mark{$$record{"$version:resource.$partid.solved"}}.
       '<br />';
       }
       if (exists $$record{"$version:resource.$partid.regrader"}) {
    $displaySub[2].=$$record{"$version:resource.$partid.regrader"}.
       ' (<b>'.&mt('Part').':</b> '.$display_part.')';
       }
    }
    # needed because old essay regrader has not parts info
    if (exists $$record{"$version:resource.regrader"}) {
       $displaySub[2].=$$record{"$version:resource.regrader"};
    }
    $studentTable.='<td>'.$displaySub[0].'&nbsp;</td><td>'.$displaySub[1];
    if ($displaySub[2]) {
       $studentTable.='Manually graded by '.$displaySub[2];
    }
    $studentTable.='&nbsp;</td></tr>';
       
       }
       $studentTable.='</table></td></tr></table>';
       return $studentTable;
   }
   
   sub updateGradeByPage {
       my ($request) = shift;
   
       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)) {
    $request->print('<font color="red">Unable to modify requested student.('.$ENV{'form.student'}.'</font>');
    $request->print(&show_grading_menu_form($ENV{'form.symb'},$ENV{'form.url'}));
    return;
       }
       my $result='<h3><font color="#339933">&nbsp;'.$ENV{'form.title'}.'</font></h3>';
       $result.='<h3>&nbsp;Student: '.&nameUserString(undef,$ENV{'form.fullname'},$uname,$udom).
    '</h3>'."\n";
   
       $request->print($result);
   
       my $navmap = Apache::lonnavmaps::navmap->new();
       my ($mapUrl, $id, $resUrl) = &Apache::lonnet::decode_symb( $ENV{'form.page'});
       my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
   
       my $iterator = $navmap->getIterator($map->map_start(),
    $map->map_finish());
   
       my $studentTable='<table border="0"><tr><td bgcolor="#777777">'.
    '<table border="0"><tr bgcolor="#e6ffff">'.
    '<td align="center"><b>&nbsp;Prob.&nbsp;</b></td>'.
    '<td><b>&nbsp;Title&nbsp;</b></td>'.
    '<td><b>&nbsp;Previous Score&nbsp;</b></td>'.
    '<td><b>&nbsp;New Score&nbsp;</b></td></tr>';
   
       $iterator->next(); # skip the first BEGIN_MAP
       my $curRes = $iterator->next(); # for "current resource"
       my ($depth,$question,$prob,$changeflag)= (1,1,1,0);
       while ($depth > 0) {
           if($curRes == $iterator->BEGIN_MAP) { $depth++; }
           if($curRes == $iterator->END_MAP) { $depth--; }
   
           if (ref($curRes) && $curRes->is_problem() && !$curRes->randomout) {
       my $parts = $curRes->parts();
               my $title = $curRes->compTitle();
       my $symbx = $curRes->symb();
       $studentTable.='<tr bgcolor="#ffffe6"><td align="center" valign="top" >'.$prob.
    (scalar(@{$parts}) == 1 ? '' : '<br>('.scalar(@{$parts}).'&nbsp;parts)').'</td>';
       $studentTable.='<td valign="top">&nbsp;<b>'.$title.'</b>&nbsp;</td>';
   
       my %newrecord=();
       my @displayPts=();
       foreach my $partid (@{$parts}) {
    my $newpts = $ENV{'form.GD_BOX'.$question.'_'.$partid};
    my $oldpts = $ENV{'form.oldpts'.$question.'_'.$partid};
   
    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 $display_part=&get_display_part($partid,undef,
      $curRes->symb());
    my $oldstatus = $ENV{'form.solved'.$question.'_'.$partid};
    $displayPts[0].='&nbsp;<b>Part:</b> '.$display_part.' = '.
       (($oldstatus eq 'excused') ? 'excused' : $oldpts).
       '&nbsp;<br>';
    $displayPts[1].='&nbsp;<b>Part:</b> '.$display_part.' = '.
        (($score eq 'excused') ? 'excused' : $newpts).
       '&nbsp;<br>';
   
    $question++;
    next if ($dropMenu eq 'reset status' || ($newpts == $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);
   
    $changeflag++;
       }
       if (scalar(keys(%newrecord)) > 0) {
    &Apache::lonnet::cstore(\%newrecord,$symbx,$ENV{'request.course.id'},
    $udom,$uname);
       }
   
       $studentTable.='<td valign="top">'.$displayPts[0].'</td>'.
    '<td valign="top">'.$displayPts[1].'</td>'.
    '</tr>';
   
       $prob++;
    }
           $curRes = $iterator->next();
       }
   
       $navmap->untieHashes();
   
       $studentTable.='</td></tr></table></td></tr></table>';
       $studentTable.=&show_grading_menu_form($ENV{'form.symb'},$ENV{'form.url'});
       my $grademsg=($changeflag == 0 ? 'No score was changed or updated.' :
     'The scores were changed for '.
     $changeflag.' problem'.($changeflag == 1 ? '.' : 's.'));
       $request->print($grademsg.$studentTable);
   
       return '';
   }
   
   #-------- end of section for handling grading by page/sequence ---------
   #
   #-------------------------------------------------------------------
   
   #--------------------Scantron Grading-----------------------------------
   #
   #------ start of section for handling grading by page/sequence ---------
   
   sub defaultFormData {
       my ($symb,$url)=@_;
       return '
         <input type="hidden" name="symb"    value="'.$symb.'" />'."\n".
        '<input type="hidden" name="url"     value="'.$url.'" />'."\n".
        '<input type="hidden" name="saveState" value="'.$ENV{'form.saveState'}.'" />'."\n".
        '<input type="hidden" name="probTitle" value="'.$ENV{'form.probTitle'}.'" />'."\n";
   }
   
   sub getSequenceDropDown {
       my ($request,$symb)=@_;
       my $result='<select name="selectpage">'."\n";
       my ($titles,$symbx) = &getSymbMap($request);
       my ($curpage)=&Apache::lonnet::decode_symb($symb); 
       my $ctr=0;
       foreach (@$titles) {
    my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
    $result.='<option value="'.$$symbx{$_}.'" '.
       ($$symbx{$_} =~ /$curpage$/ ? 'selected="on"' : '').
       '>'.$showtitle.'</option>'."\n";
    $ctr++;
       }
       $result.= '</select>';
       return $result;
   }
   
   sub scantron_filenames {
       my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
       my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
       my @files=&Apache::lonnet::dirlist('userfiles',$cdom,$cname,
       &Apache::loncommon::propath($cdom,$cname));
       my @possiblenames;
       foreach my $filename (sort(@files)) {
    ($filename)=split(/&/,$filename);
    if ($filename!~/^scantron_orig_/) { next ; }
    $filename=~s/^scantron_orig_//;
    push(@possiblenames,$filename);
       }
       return @possiblenames;
   }
   
   sub scantron_uploads {
       my ($file2grade) = @_;
       my $result= '<select name="scantron_selectfile">';
       $result.="<option></option>";
       foreach my $filename (sort(&scantron_filenames())) {
    $result.="<option".($filename eq $file2grade ? ' selected="on"':'').">$filename</option>\n";
       }
       $result.="</select>";
       return $result;
   }
   
   sub scantron_scantab {
       my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
       my $result='<select name="scantron_format">'."\n";
       $result.='<option></option>'."\n";
       foreach my $line (<$fh>) {
    my ($name,$descrip)=split(/:/,$line);
    if ($name =~ /^\#/) { next; }
    $result.='<option value="'.$name.'">'.$descrip.'</option>'."\n";
       }
       $result.='</select>'."\n";
   
       return $result;
   }
   
   sub scantron_CODElist {
       my $cdom = $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
       my $cnum = $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
       my @names=&Apache::lonnet::getkeys('CODEs',$cdom,$cnum);
       my $namechoice='<option></option>';
       foreach my $name (sort(@names)) {
    if ($name =~ /^error: 2 /) { next; }
    $namechoice.='<option value="'.$name.'">'.$name.'</option>';
       }
       $namechoice='<select name="scantron_CODElist">'.$namechoice.'</select>';
       return $namechoice;
   }
   
   sub scantron_CODEunique {
       my $result='<nobr>
                    <input type="radio" name="scantron_CODEunique"
                           value="Yes" checked="on" /> Yes
                   </nobr>
                   <nobr>
                    <input type="radio" name="scantron_CODEunique"
                           value="No" /> No
                   </nobr>';
       return $result;
   }
   
   sub scantron_selectphase {
       my ($r,$file2grade) = @_;
       my ($symb,$url)=&get_symb_and_url($r);
       if (!$symb) {return '';}
       my $sequence_selector=&getSequenceDropDown($r,$symb);
       my $default_form_data=&defaultFormData($symb,$url);
       my $grading_menu_button=&show_grading_menu_form($symb,$url);
       my $file_selector=&scantron_uploads($file2grade);
       my $format_selector=&scantron_scantab();
       my $CODE_selector=&scantron_CODElist();
       my $CODE_unique=&scantron_CODEunique();
       my $result;
       #FIXME allow instructor to be able to download the scantron file
       # and to upload it,
       $result.= <<SCANTRONFORM;
       <table width="100%" border="0">
       <tr>
         <td bgcolor="#777777">
          <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantron_process">
          <input type="hidden" name="command" value="scantron_warning" />
           $default_form_data
           <table width="100%" border="0">
             <tr bgcolor="#e6ffff">
               <td colspan="2">
                 &nbsp;<b>Specify file and which Folder/Sequence to grade</b>
               </td>
             </tr>
             <tr bgcolor="#ffffe6">
               <td> Sequence to grade: </td><td> $sequence_selector </td>
             </tr>
             <tr bgcolor="#ffffe6">
               <td> Filename of scoring office file: </td><td> $file_selector </td>
             </tr>
             <tr bgcolor="#ffffe6">
               <td> Format of data file: </td><td> $format_selector </td>
             </tr>
             <tr bgcolor="#ffffe6">
               <td> Saved CODEs to validate against: </td><td> $CODE_selector</td>
             </tr>
             <tr bgcolor="#ffffe6">
               <td> Each CODE is only to be used once:</td><td> $CODE_unique </td>
             </tr>
             <tr bgcolor="#ffffe6">
       <td> Options: </td>
               <td>
                   <input type="checkbox" name="scantron_options_redo" value="redo_skipped"/> Do only previously skipped records <br />
                   <input type="checkbox" name="scantron_options_ignore" value="ignore_corrections"/> Remove all exisiting corrections
       </td>
             </tr>
             <tr bgcolor="#ffffe6">
               <td colspan="2">
                 <input type="submit" value="Validate Scantron Records" />
               </td>
             </tr>
           </table>
          </form>
         </td>
       </tr>
   SCANTRONFORM
      
       $r->print($result);
   
       if (&Apache::lonnet::allowed('usc',$ENV{'request.role.domain'}) ||
           &Apache::lonnet::allowed('usc',$ENV{'request.course.id'})) {
   
           $r->print(<<SCANTRONFORM);
       <tr>
         <td bgcolor="#777777">
           <table width="100%" border="0">
             <tr bgcolor="#e6ffff">
               <td>
                 &nbsp;<b>Specify a Scantron data file to upload.</b>
               </td>
             </tr>
             <tr bgcolor="#ffffe6">
               <td>
   SCANTRONFORM
       my $default_form_data=&defaultFormData(&get_symb_and_url($r,1));
       my $cdom= $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
       my $cnum= $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
       $r->print(<<UPLOAD);
                 <script type="text/javascript" language="javascript">
       function checkUpload(formname) {
    if (formname.upfile.value == "") {
       alert("Please use the browse button to select a file from your local directory.");
       return false;
    }
    formname.submit();
       }
                 </script>
   
                 <form enctype='multipart/form-data' action='/adm/grades' name='rules' method='post'>
                   $default_form_data
                   <input name='courseid' type='hidden' value='$cnum' />
                   <input name='domainid' type='hidden' value='$cdom' />
                   <input name='command' value='scantronupload_save' type='hidden' />
                   File to upload:<input type="file" name="upfile" size="50" />
                   <br />
                   <input type="button" onClick="javascript:checkUpload(this.form);" value="Upload Scantron Data" />
                 </form>
   UPLOAD
   
           $r->print(<<SCANTRONFORM);
               </td>
             </tr>
           </table>
         </td>
       </tr>
   SCANTRONFORM
       }
       $r->print(<<SCANTRONFORM);
       <tr>
         <td bgcolor="#777777">
           <form action='/adm/grades' name='scantron_download'>
             <input type="hidden" name="command" value="scantron_download" />
             <table width="100%" border="0">
               <tr bgcolor="#e6ffff">
                 <td colspan="2">
                   &nbsp;<b>Download a scoring office file</b>
                 </td>
               </tr>
               <tr bgcolor="#ffffe6">
                 <td> Filename of scoring office file: </td><td> $file_selector </td>
               </tr>
               <tr bgcolor="#ffffe6">
                 <td colspan="2">
                   <input type="submit" value="Show List of Files" />
                 </td>
               </tr>
             </table>
           </form>
         </td>
       </tr>
   SCANTRONFORM
   
       $r->print(<<SCANTRONFORM);
     </table>
   </form>
   $grading_menu_button
   SCANTRONFORM
   
       return
   }
   
   sub get_scantron_config {
       my ($which) = @_;
       my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
       my %config;
       #FIXME probably should move to XML it has already gotten a bit much now
       foreach my $line (<$fh>) {
    my ($name,$descrip)=split(/:/,$line);
    if ($name ne $which ) { next; }
    chomp($line);
    my @config=split(/:/,$line);
    $config{'name'}=$config[0];
    $config{'description'}=$config[1];
    $config{'CODElocation'}=$config[2];
    $config{'CODEstart'}=$config[3];
    $config{'CODElength'}=$config[4];
    $config{'IDstart'}=$config[5];
    $config{'IDlength'}=$config[6];
    $config{'Qstart'}=$config[7];
    $config{'Qlength'}=$config[8];
    $config{'Qoff'}=$config[9];
    $config{'Qon'}=$config[10];
    $config{'PaperID'}=$config[11];
    $config{'PaperIDlength'}=$config[12];
    $config{'FirstName'}=$config[13];
    $config{'FirstNamelength'}=$config[14];
    $config{'LastName'}=$config[15];
    $config{'LastNamelength'}=$config[16];
    last;
       }
       return %config;
   }
   
   sub username_to_idmap {
       my ($classlist)= @_;
       my %idmap;
       foreach my $student (keys(%$classlist)) {
    $idmap{$classlist->{$student}->[&Apache::loncoursedata::CL_ID]}=
       $student;
       }
       return %idmap;
   }
   
   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.".$args->{'question'},'1');
    } else {
       substr($answer,$args->{'response'},1)=$on;
       &scan_data($scan_data,
          "$whichline.no_bubble.".$args->{'question'},undef,'1');
    }
    my $where=$length*($args->{'question'}-1)+$scantron_config->{'Qstart'};
    substr($line,$where-1,$length)=$answer;
       }
       return $line;
   }
   
   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};
   }
   
   sub scantron_parse_scanline {
       my ($line,$whichline,$scantron_config,$scan_data,$justHeader)=@_;
       my %record;
       my $questions=substr($line,$$scantron_config{'Qstart'}-1);
       my $data=substr($line,0,$$scantron_config{'Qstart'}-1);
       if ($$scantron_config{'CODElocation'} ne 0) {
    if ($$scantron_config{'CODElocation'} < 0) {
       $record{'scantron.CODE'}=substr($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 ($justHeader) { return \%record; }
   
       my @alphabet=('A'..'Z');
       my $questnum=0;
       while ($questions) {
    $questnum++;
    my $currentquest=substr($questions,0,$$scantron_config{'Qlength'});
    substr($questions,0,$$scantron_config{'Qlength'})='';
    if (length($currentquest) < $$scantron_config{'Qlength'}) { next; }
    my @array=split($$scantron_config{'Qon'},$currentquest,-1);
    if (length($array[0]) eq $$scantron_config{'Qlength'}) {
       $record{"scantron.$questnum.answer"}='';
       if (!&scan_data($scan_data,"$whichline.no_bubble.$questnum")) {
    push(@{$record{"scantron.missingerror"}},$questnum);
        }
    } else {
       $record{"scantron.$questnum.answer"}=$alphabet[length($array[0])];
    }
     if (scalar(@array) gt 2) {
        push(@{$record{'scantron.doubleerror'}},$questnum);
        my @ans=@array;
        my $i=length($ans[0]);shift(@ans);
       while ($#ans) {
     $i+=length($ans[0])+1;
     $record{"scantron.$questnum.answer"}.=$alphabet[$i];
     shift(@ans);
        }
     }
       }
       $record{'scantron.maxquest'}=$questnum;
       return \%record;
   }
   
   sub scantron_add_delay {
       my ($delayqueue,$scanline,$errormessage,$errorcode)=@_;
       push(@$delayqueue,
    {'line' => $scanline, 'emsg' => $errormessage,
     'ecode' => $errorcode }
    );
   }
   
   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;
   }
   
   sub scantron_filter {
       my ($curres)=@_;
                           # randomout is dysfunctional at best for this purpose
       if (ref($curres) && $curres->is_problem()) { #&& !$curres->randomout) {
    return 1;
       }
       return 0;
   }
   
   sub scantron_process_corrections {
       my ($r) = @_;
       my %scantron_config=&get_scantron_config($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"}});
       if ($err) { last; }
    }
       }
       if ($err) {
    $r->print("Unable to accept last correction, an error occurred :$errmsg:");
     } else {      } else {
       if ($ENV{'form.f'.$i} ne 'none') {   &scantron_put_line($scanlines,$scan_data,$which,$line,$skip);
  $fields{$ENV{'form.f'.$i}}=$keyfields[$i];   &scantron_putfile($scanlines,$scan_data);
       }  
     }      }
   }  
   $request->print('<h3>Assigning Grades</h3>');  
   my $courseid=$ENV{'request.course.id'};  
 #  my $cdom=$ENV{"course.$courseid.domain"};  
 #  my $cnum=$ENV{"course.$courseid.num"};  
   my ($classlist) = &getclasslist('all','1');  
   my @skipped;  
   my $countdone=0;  
   foreach my $grade (@gradedata) {  
     my %entries=&Apache::loncommon::record_sep($grade);  
     my $username=$entries{$fields{'username'}};  
     my $domain=$entries{$fields{'domain'}};  
     if (!exists($$classlist{"$username:$domain"})) {  
       push(@skipped,"$username:$domain");  
       next;  
     }  
     my %grades;  
     foreach my $dest (keys(%fields)) {  
       if ($dest eq 'username' || $dest eq 'domain') { next; }  
       if ($entries{$fields{$dest}} eq '') { next; }  
       my $store_key=$dest;  
       $store_key=~s/^stores/resource/;  
       $store_key=~s/_/\./g;  
       $grades{$store_key}=$entries{$fields{$dest}};  
     }  
     $grades{"resource.regrader"}="$ENV{'user.name'}:$ENV{'user.domain'}";  
     &Apache::lonnet::cstore(\%grades,$symb,$ENV{'request.course.id'},  
     $domain,$username);  
     $request->print('.');  
     $request->rflush();  
     $countdone++;  
   }  
   $request->print("<br />Stored $countdone students\n");  
   if (@skipped) {  
     $request->print('<br /><font size="+1"><b>Skipped Students</b></font><br />');  
     foreach my $student (@skipped) { $request->print("<br />$student"); }  
   }  
   $request->print(&view_edit_entire_class_form($symb,$url));  
   $request->print(&show_grading_menu_form($symb,$url));  
   return '';  
 }  }
   
 sub send_header {  sub reset_skipping_status {
   my ($request)= @_;      my ($scanlines,$scan_data)=&scantron_getfile();
   $request->print(&Apache::lontexconvert::header());      &scan_data($scan_data,'remember_skipping',undef,1);
 #  $request->print("      &scantron_putfile(undef,$scan_data);
 #<script>  
 #remotewindow=open('','homeworkremote');  
 #remotewindow.close();  
 #</script>");   
   $request->print('<body bgcolor="#FFFFFF">');  
 }  }
   
 sub send_footer {  sub allow_skipping {
   my ($request)= @_;      my ($scan_data,$i)=@_;
   $request->print('</body>');      my %remembered=split(':',&scan_data($scan_data,'remember_skipping'));
   $request->print(&Apache::lontexconvert::footer());      delete($remembered{$i});
       &scan_data($scan_data,'remember_skipping',join(':',%remembered));
 }  }
   
 sub handler {  sub should_be_skipped {
   my $request=$_[0];      my ($scan_data,$i)=@_;
       if ($ENV{'form.scantron_options_redo'} !~ /^redo_/) {
    # not redoing old skips
    return 0;
       }
       my %remembered=split(':',&scan_data($scan_data,'remember_skipping'));
       if (exists($remembered{$i})) { return 0; }
       return 1;
   }
   
   if ($ENV{'browser.mathml'}) {  sub remember_current_skipped {
     $request->content_type('text/xml');      my ($scanlines,$scan_data)=&scantron_getfile();
   } else {      my %to_remember;
     $request->content_type('text/html');      for (my $i=0;$i<=$scanlines->{'count'};$i++) {
   }   if ($scanlines->{'skipped'}[$i]) {
   $request->send_http_header;      $to_remember{$i}=1;
   return OK if $request->header_only;   }
   &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});      }
   my $url=$ENV{'form.url'};      &Apache::lonnet::logthis('remembering '.join(':',%to_remember));
   my $symb=$ENV{'form.symb'};      &scan_data($scan_data,'remember_skipping',join(':',%to_remember));
   my $command=$ENV{'form.command'};      &scantron_putfile(undef,$scan_data);
   if (!$url) {  }
     my ($temp1,$temp2);  
     ($temp1,$temp2,$ENV{'form.url'})=split(/___/,$symb);  sub check_for_error {
     $url = $ENV{'form.url'};      my ($r,$result)=@_;
   }      if ($result ne 'ok' && $result ne 'not_found' ) {
   &send_header($request);   $r->print("An error occured ($result) when trying to Remove the existing corrections.");
   if ($url eq '' && $symb eq '') {      }
      if ($ENV{'user.adv'}) {  }
          if (($ENV{'form.codeone'}) && ($ENV{'form.codetwo'}) &&  
              ($ENV{'form.codethree'})) {  sub scantron_warning_screen {
              my $token=$ENV{'form.codeone'}.'*'.$ENV{'form.codetwo'}.'*'.      my ($button_text)=@_;
         $ENV{'form.codethree'};      my $title=&Apache::lonnet::gettitle($ENV{'form.selectpage'});
              my ($tsymb,$tuname,$tudom,$tcrsid)=      return (<<STUFF);
  &Apache::lonnet::checkin($token);  <p>
              if ($tsymb) {  <font color="red">Please double check the information
                 my ($map,$id,$url)=split(/\_\_\_/,$tsymb);                   below before clicking on '$button_text'</font>
                 if (&Apache::lonnet::allowed('mgr',$tcrsid)) {  </p>
                    $request->print(  <table>
                      &Apache::lonnet::ssi('/res/'.$url,  <tr><td><b>Sequence To be Graded:</b></td><td>$title</td></tr>
                         ('grade_username' => $tuname,  <tr><td><b>Data File that will be used:</b></td><td><tt>$ENV{'form.scantron_selectfile'}</tt></td></tr>
                          'grade_domain' => $tudom,  </table>
                          'grade_courseid' => $tcrsid,  </font>
                          'grade_symb' => $tsymb)));  <br />
                 } else {  <p> If this information is correct, please click on '$button_text'.</p>
                    $request->print('<h1>Not authorized: '.$token.'</h1>');  <p> If something is incorrect, please click the 'Grading Menu' button to start over.</p>
                 }             
   <br />
   STUFF
   }
   
   sub scantron_do_warning {
       my ($r)=@_;
       my ($symb,$url)=&get_symb_and_url($r);
       if (!$symb) {return '';}
       my $default_form_data=&defaultFormData($symb,$url);
       $r->print(&scantron_form_start().$default_form_data);
       my $warning=&scantron_warning_screen('Validate Records');
       $r->print(<<STUFF);
   $warning
   <input type="submit" name="submit" value="Validate Records" />
   <input type="hidden" name="command" value="scantron_validate" />
   </form>
   STUFF
       $r->print("<br />".&show_grading_menu_form($symb,$url)."</body></html>");
       return '';
   }
   
   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'}" />
   SCANTRONFORM
       return $result;
   }
   
   sub scantron_validate_file {
       my ($r) = @_;
       my ($symb,$url)=&get_symb_and_url($r);
       if (!$symb) {return '';}
       my $default_form_data=&defaultFormData($symb,$url);
       
       # do the detection of only doing skipped records first befroe 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();
    &scantron_remove_file('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);
       }
       $r->print("<p>Gathering neccessary info.</p>");$r->rflush();
       #get the student pick code ready
       $r->print(&Apache::loncommon::studentbrowser_javascript());
       my $max_bubble=&scantron_get_maxbubble($r);
       my $result=&scantron_form_start($max_bubble).$default_form_data;
       $r->print($result);
       
       my @validate_phases=( 'ID',
     'CODE',
     'doublebubble',
     'missingbubbles');
       if (!$ENV{'form.validatepass'}) {
    $ENV{'form.validatepass'} = 0;
       }
       my $currentphase=$ENV{'form.validatepass'};
   
       my $stop=0;
       while (!$stop && $currentphase < scalar(@validate_phases)) {
    $r->print("<p> Validating ".$validate_phases[$currentphase]."</p>");
    $r->rflush();
    my $which="scantron_validate_".$validate_phases[$currentphase];
    {
       no strict 'refs';
       ($stop,$currentphase)=&$which($r,$currentphase);
    }
       }
       if (!$stop) {
    my $warning=&scantron_warning_screen('Start Grading');
    $r->print(<<STUFF);
   Validation process complete.<br />
   $warning
   <input type="submit" name="submit" value="Start Grading" />
   <input type="hidden" name="command" value="scantron_process" />
   STUFF
   
       } else {
    $r->print('<input type="hidden" name="command" value="scantron_validate" />');
    $r->print("<input type='hidden' name='validatepass' value='".$currentphase."' />");
       }
       if ($stop) {
    $r->print('<input type="submit" name="submit" value="Continue ->" />');
    $r->print(' using corrected info <br />');
    $r->print("<input type='submit' value='Skip' name='scantron_skip_record' />");
    $r->print(" this scanline saving it for later.");
       }
       $r->print(" </form><br />".&show_grading_menu_form($symb,$url).
         "</body></html>");
       return '';
   }
   
   sub scantron_remove_file {
       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);
   }
   
   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);
       }
       return $result;
   }
   
   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);
   }
   
   sub lonnet_putfile {
       my ($contents,$filename)=@_;
       my $docuname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
       my $docudom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
       my $docuhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
       $ENV{'form.sillywaytopassafilearound'}=$contents;
       &Apache::lonnet::finishuserfileupload($docuname,$docudom,$docuhome,'sillywaytopassafilearound',$filename);
   
   }
   
   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);
   }
   
   sub scantron_get_line {
       my ($scanlines,$scan_data,$i)=@_;
       if (&should_be_skipped($scan_data,$i)) { return undef; }
       if ($scanlines->{'skipped'}[$i]) { return undef; }
       if ($scanlines->{'corrected'}[$i]) {return $scanlines->{'corrected'}[$i];}
       return $scanlines->{'orig'}[$i]; 
   }
   
   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;
   }
   
   sub scantron_put_line {
       my ($scanlines,$scan_data,$i,$newline,$skip)=@_;
       if ($skip) {
    $scanlines->{'skipped'}[$i]=$newline;
    &allow_skipping($scan_data,$i);
    return;
       }
       $scanlines->{'corrected'}[$i]=$newline;
   }
   
   sub scantron_validate_ID {
       my ($r,$currentphase) = @_;
       
       #get student info
       my $classlist=&Apache::loncoursedata::get_classlist();
       my %idmap=&username_to_idmap($classlist);
   
       #get scantron line setup
       my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
       my ($scanlines,$scan_data)=&scantron_getfile();
   
       my %found=('ids'=>{},'usernames'=>{});
       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 ($found{'ids'}{$found}) {
    &scantron_get_correction($r,$i,$scan_record,\%scantron_config,
    $line,'duplicateID',$found);
    return(1,$currentphase);
       } elsif ($found{'usernames'}{$username}) {
    &scantron_get_correction($r,$i,$scan_record,\%scantron_config,
    $line,'duplicateID',$username);
    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 (defined($username) && $found{'usernames'}{$username}) {
       &scantron_get_correction($r,$i,$scan_record,
        \%scantron_config,
        $line,'duplicateID',$username);
       return(1,$currentphase);
    } elsif (!defined($username)) {
       &scantron_get_correction($r,$i,$scan_record,
        \%scantron_config,
        $line,'incorrectID');
       return(1,$currentphase);
    }
    $found{'usernames'}{$username}++;
     } else {      } else {
                 $request->print('<h1>Not a valid DocID: '.$token.'</h1>');   &scantron_get_correction($r,$i,$scan_record,\%scantron_config,
             }   $line,'incorrectID');
  } else {   return(1,$currentphase);
              $request->print(&Apache::lonxml::tokeninputfield());      }
          }   }
      }      }
   } else {  
     #&Apache::lonhomework::showhashsubset(\%ENV,'^form');      return (0,$currentphase+1);
     $Apache::grades::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});  }
     if ($command eq 'submission') {  
       &listStudents($request) if ($ENV{'form.student'} eq '');  sub scantron_get_correction {
       &submission($request,0,0) if ($ENV{'form.student'} ne '');      my ($r,$i,$scan_record,$scan_config,$line,$error,$arg)=@_;
     } elsif ($command eq 'processGroup') {  
       &processGroup($request);  #FIXME in the case of a duplicated ID the previous line, probaly need
     } elsif ($command eq 'gradingmenu') {  #to show both the current line and the previous one and allow skipping
       $request->print(&gradingmenu($request));  #the previous one or the current one
     } elsif ($command eq 'viewgrades') {  
       $request->print(&viewgrades($request));      $r->print("<p><b>An error was detected ($error)</b>");
     } elsif ($command eq 'handgrade') {      if ( defined($$scan_record{'scantron.PaperID'}) ) {
       $request->print(&processHandGrade($request));   $r->print(" for PaperID <tt>".
     } elsif ($command eq 'editgrades') {    $$scan_record{'scantron.PaperID'}."</tt> \n");
       $request->print(&editgrades($request));      } else {
     } elsif ($command eq 'verify') {   $r->print(" in scanline $i <pre>".
       $request->print(&verifyreceipt($request));    $line."</pre> \n");
     } elsif ($command eq 'csvupload') {      }
       $request->print(&csvupload($request));      $r->print('<input type="hidden" name="scantron_corrections" value="'.$error.'" />'."\n");
     } elsif ($command eq 'csvuploadmap') {      $r->print('<input type="hidden" name="scantron_line" value="'.$i.'" />'."\n");
       $request->print(&csvuploadmap($request));      if ($error =~ /ID$/) {
 #    } elsif ($command eq 'receiptInput') {   if ($error eq 'incorrectID') {
 #      &receiptInput($request);      $r->print("The encoded ID is not in the classlist</p>\n");
     } elsif ($command eq 'csvuploadassign') {   } elsif ($error eq 'duplicateID') {
       if ($ENV{'form.associate'} ne 'Reverse Association') {      $r->print("The encoded ID has also been used by a previous paper $arg</p>\n");
  $request->print(&csvuploadassign($request));   }
       } else {   $r->print("<p>The ID on the form is  <tt>".
  if ( $ENV{'form.upfile_associate'} ne 'reverse' ) {    $$scan_record{'scantron.ID'}."</tt><br />\n");
   $ENV{'form.upfile_associate'} = 'reverse';   $r->print("The name on the paper is ".
     $$scan_record{'scantron.LastName'}.",".
     $$scan_record{'scantron.FirstName'}."</p>");
    $r->print("<p>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='' />");
    $r->print("\n@".
    &Apache::loncommon::select_dom_form($ENV{'request.role.domain'},'scantron_domain'));
   
    $r->print('</li>');
       } elsif ($error =~ /CODE$/) {
    if ($error eq 'incorrectCODE') {
       $r->print("</p><p>The encoded CODE is not in the list of possible CODEs</p>\n");
    } elsif ($error eq 'duplicateCODE') {
       $r->print("</p><p>The encoded CODE has also been used by a previous paper ".join(', ',@{$arg}).", and CODEs are supposed to be unique</p>\n");
    }
    $r->print("<p>The CODE on the form is  <tt>".
     $$scan_record{'scantron.CODE'}."</tt><br />\n");
    $r->print("<p>The ID on the form is  <tt>".
     $$scan_record{'scantron.ID'}."</tt><br />\n");
    $r->print("The name on the paper is ".
     $$scan_record{'scantron.LastName'}.",".
     $$scan_record{'scantron.FirstName'}."</p>");
    $r->print("<p>How should I handle this? <br /> \n");
    $r->print("\n<br /> ");
    my $i=0;
    if ($error eq 'incorrectCODE') {
       my ($max,$closest)=&scantron_get_closely_matching_CODEs($arg,$$scan_record{'scantron.CODE'});
       foreach my $testcode (@{$closest}) {
    my $checked='';
    if (!$i) { $checked=' checked="on" '; }
    $r->print("<input type='radio' name='scantron_CODE_resolution' value='use_closest_$i' $checked /> Use the similar CODE <b><tt>".$testcode."</tt></b> instead.<input type='hidden' name='scantron_CODE_closest_$i' value='$testcode' />");
    $r->print("\n<br />");
    $i++;
       }
    }
    my $checked; if (!$i) { $checked=' checked="on" '; }
    $r->print("<input type='radio' name='scantron_CODE_resolution' value='use_unfound' $checked /> Use the CODE <b><tt>".$$scan_record{'scantron.CODE'}."</tt></b> that is was on the paper, ignoring the error.");
    $r->print("\n<br />");
   
    $r->print(<<ENDSCRIPT);
   <script type="text/javascript">
   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; }
       }
   }
   </script>
   ENDSCRIPT
    my $href="/adm/pickcode?".
      "form=".&Apache::lonnet::escape("scantronupload").
      "&scantron_format=".&Apache::lonnet::escape($ENV{'form.scantron_format'}).
      "&scantron_CODElist=".&Apache::lonnet::escape($ENV{'form.scantron_CODElist'}).
      "&curCODE=".&Apache::lonnet::escape($$scan_record{'scantron.CODE'}).
      "&scantron_selectfile=".&Apache::lonnet::escape($ENV{'form.scantron_selectfile'});
    $r->print("<input type='radio' name='scantron_CODE_resolution' value='use_found' /> <a target='_blank' href='$href'>Select</a> a CODE from the list of all CODEs and use it. Selected CODE is <input readonly='true' type='text' size='8' name='scantron_CODE_selectedvalue' onfocus=\"javascript:change_radio('use_found')\" onchange=\"javascript:change_radio('use_found')\" />");
    $r->print("\n<br />");
    $r->print("<input type='radio' name='scantron_CODE_resolution' value='use_typed' /> Use <input type='text' size='8' name='scantron_CODE_newvalue' onfocus=\"javascript:change_radio('use_typed')\" onkeypress=\"javascript:change_radio('use_typed')\" /> as the CODE.");
    $r->print("\n<br /><br />");
       } elsif ($error eq 'doublebubble') {
    $r->print("<p>There have been multiple bubbles scanned for a some question(s)</p>\n");
    $r->print('<input type="hidden" name="scantron_questions" value="'.
     join(',',@{$arg}).'" />');
    $r->print("<p>Please indicate which bubble should be used for grading</p>");
    foreach my $question (@{$arg}) {
       my $selected=$$scan_record{"scantron.$question.answer"};
       &scantron_bubble_selector($r,$scan_config,$question,split('',$selected));
    }
       } elsif ($error eq 'missingbubble') {
    $r->print("<p>There have been <b>no</b> bubbles scanned for some question(s)</p>\n");
    $r->print("<p>Please indicate which bubble should be used for grading</p>");
    $r->print("Some questions have no scanned bubbles\n");
    $r->print('<input type="hidden" name="scantron_questions" value="'.
     join(',',@{$arg}).'" />');
    foreach my $question (@{$arg}) {
       my $selected=$$scan_record{"scantron.$question.answer"};
       &scantron_bubble_selector($r,$scan_config,$question);
    }
       } else {
    $r->print("\n<ul>");
       }
       $r->print("\n</li></ul>");
   
   }
   
   sub scantron_bubble_selector {
       my ($r,$scan_config,$quest,@selected)=@_;
       my $max=$$scan_config{'Qlength'};
       my @alphabet=('A'..'Z');
       $r->print("<table border='1'><tr><td rowspan='2'>$quest</td>");
       for (my $i=0;$i<$max+1;$i++) {
    $r->print('<td align="center">');
    if ($selected[0] eq $alphabet[$i]) { $r->print('X'); shift(@selected) }
    else { $r->print('&nbsp;'); }
    $r->print('</td>');
       }
       $r->print('<td></td></tr><tr>');
       for (my $i=0;$i<$max;$i++) {
    $r->print('<td><input type="radio" name="scantron_correct_Q_'.$quest.
     '" value="'.$i.'" />'.$alphabet[$i]."</td>");
       }
       $r->print('<td><input type="radio" name="scantron_correct_Q_'.$quest.
         '" value="none" /> No bubble </td>');
       $r->print('</tr></table>');
   }
   
   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;
   }
   
   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]);
   }
   
   sub get_codes {
       my $old_name=$ENV{'form.scantron_CODElist'};
       my $cdom =$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
       my $cnum =$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
       my %result=&Apache::lonnet::get('CODEs',[$old_name],$cdom,$cnum);
       my %allcodes=map {(&Apache::lonprintout::num_to_letters($_),1)} split(',',$result{$old_name});
       return %allcodes;
   }
   
   sub scantron_validate_CODE {
       my ($r,$currentphase) = @_;
       my %scantron_config=&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 ($scanlines,$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=$$scan_record{'scantron.CODE'};
    my $error=0;
    if (!exists($allcodes{$CODE}) && !$$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);
   }
   
   sub scantron_validate_doublebubble {
       my ($r,$currentphase) = @_;
       #get student info
       my $classlist=&Apache::loncoursedata::get_classlist();
       my %idmap=&username_to_idmap($classlist);
   
       #get scantron line setup
       my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
       my ($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);
    if (!defined($$scan_record{'scantron.doubleerror'})) { next; }
    &scantron_get_correction($r,$i,$scan_record,\%scantron_config,$line,
    'doublebubble',
    $$scan_record{'scantron.doubleerror'});
       return (1,$currentphase);
       }
       return (0,$currentphase+1);
   }
   
   sub scantron_get_maxbubble {
       my ($r)=@_;
       if (defined($ENV{'form.scantron_maxbubble'}) &&
    $ENV{'form.scantron_maxbubble'}) {
    return $ENV{'form.scantron_maxbubble'};
       }
       my $navmap=Apache::lonnavmaps::navmap->new();
       my (undef,undef,$sequence)=
    &Apache::lonnet::decode_symb($ENV{'form.selectpage'});
       my $map=$navmap->getResourceByUrl($sequence);
       my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
       &Apache::lonnet::delenv('form.counter');
       foreach my $resource (@resources) {
    my $result=&Apache::lonnet::ssi($resource->src());
       }
       &Apache::lonnet::delenv('scantron\.');
       my $envfile=$ENV{'user.environment'};
       $envfile=~/\/([^\/]+)\.id$/;
       $envfile=$1;
       &Apache::lonnet::transfer_profile_to_env($r->dir_config('lonIDsDir'),
        $envfile);
       $ENV{'form.scantron_maxbubble'}=$ENV{'form.counter'}-1;
       return $ENV{'form.scantron_maxbubble'};
   }
   
   sub scantron_validate_missingbubbles {
       my ($r,$currentphase) = @_;
       #get student info
       my $classlist=&Apache::loncoursedata::get_classlist();
       my %idmap=&username_to_idmap($classlist);
   
       #get scantron line setup
       my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
       my ($scanlines,$scan_data)=&scantron_getfile();
       my $max_bubble=&scantron_get_maxbubble();
       if (!$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);
    if (!defined($$scan_record{'scantron.missingerror'})) { next; }
    my @to_correct;
    foreach my $missing (@{$$scan_record{'scantron.missingerror'}}) {
       if ($missing > $max_bubble) { next; }
       push(@to_correct,$missing);
    }
    if (@to_correct) {
       &scantron_get_correction($r,$i,$scan_record,\%scantron_config,
        $line,'missingbubble',\@to_correct);
       return (1,$currentphase);
    }
   
       }
       return (0,$currentphase+1);
   }
   
   sub scantron_process_students {
       my ($r) = @_;
       my (undef,undef,$sequence)=&Apache::lonnet::decode_symb($ENV{'form.selectpage'});
       my ($symb,$url)=&get_symb_and_url($r);
       if (!$symb) {return '';}
       my $default_form_data=&defaultFormData($symb,$url);
   
       my %scantron_config=&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);
       my $navmap=Apache::lonnavmaps::navmap->new();
       my $map=$navmap->getResourceByUrl($sequence);
       my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
   #    $r->print("geto ".scalar(@resources)."<br />");
       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 @delayqueue;
       my %completedstudents;
       
       my $count=&get_todo_count($scanlines,$scan_data);
       my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Scantron Status',
        'Scantron Progress',$count,
       'inline',undef,'scantronupload');
       &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
     'Processing first student');
       my $start=&Time::HiRes::time();
       my $i=-1;
       my ($uname,$udom,$started);
       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 $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
     $scan_data);
     unless ($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;
     }
     ($uname,$udom)=split(/:/,$uname);
     &Apache::lonnet::delenv('form.counter');
     &Apache::lonnet::appenv(%$scan_record);
   
    my $i=0;
    foreach my $resource (@resources) {
       $i++;
       my %form=('submitted'     =>'scantron',
         'grade_target'  =>'grade',
         'grade_username'=>$uname,
         'grade_domain'  =>$udom,
         'grade_courseid'=>$ENV{'request.course.id'},
         'grade_symb'    =>$resource->symb());
       if (exists($scan_record->{'scantron.CODE'}) &&
    $scan_record->{'scantron.CODE'}) {
    $form{'CODE'}=$scan_record->{'scantron.CODE'};
       }
       my $result=&Apache::lonnet::ssi($resource->src(),%form);
       if (&Apache::loncommon::connection_aborted($r)) { last; }
    }
    $completedstudents{$uname}={'line'=>$line};
    if (&Apache::loncommon::connection_aborted($r)) { last; }
       } continue {
    &Apache::lonnet::delenv('form.counter');
    &Apache::lonnet::delenv('scantron\.');
       }
       &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
   #    my $lasttime = &Time::HiRes::time()-$start;
   #    $r->print("<p>took $lasttime</p>");
   
       $navmap->untieHashes();
       $r->print("</form>");
       $r->print(&show_grading_menu_form($symb,$url));
       return '';
   }
   
   sub scantron_upload_scantron_data {
       my ($r)=@_;
       $r->print(&Apache::loncommon::coursebrowser_javascript($ENV{'request.role.domain'}));
       my $select_link=&Apache::loncommon::selectcourse_link('rules','courseid',
     'domainid',
     'coursename');
       my $domsel=&Apache::loncommon::select_dom_form($ENV{'request.role.domain'},
      'domainid');
       my $default_form_data=&defaultFormData(&get_symb_and_url($r,1));
       $r->print(<<UPLOAD);
   <script type="text/javascript" language="javascript">
       function checkUpload(formname) {
    if (formname.upfile.value == "") {
       alert("Please use the browse button to select a file from your local directory.");
       return false;
    }
    formname.submit();
       }
   </script>
   
   <form enctype='multipart/form-data' action='/adm/grades' name='rules' method='post'>
   $default_form_data
   <table>
   <tr><td>$select_link </td></tr>
   <tr><td>Course ID:   </td><td><input name='courseid' type='text' />  </td></tr>
   <tr><td>Course Name: </td><td><input name='coursename' type='text' /></td></tr>
   <tr><td>Domain:      </td><td>$domsel                                </td></tr>
   <tr><td>File to upload:</td><td><input type="file" name="upfile" size="50" /></td></tr>
   </table>
   <input name='command' value='scantronupload_save' type='hidden' />
   <input type="button" onClick="javascript:checkUpload(this.form);" value="Upload Scantron Data" />
   </form>
   UPLOAD
       return '';
   }
   
   sub scantron_upload_scantron_data_save {
       my($r)=@_;
       my ($symb,$url)=&get_symb_and_url($r,1);
       my $doanotherupload=
    '<br /><form action="/adm/grades" method="post">'."\n".
    '<input type="hidden" name="command" value="scantronupload" />'."\n".
    '<input type="submit" name="submit" value="Do Another Upload" />'."\n".
    '</form>'."\n";
       if (!&Apache::lonnet::allowed('usc',$ENV{'form.domainid'}) &&
    !&Apache::lonnet::allowed('usc',
       $ENV{'form.domainid'}.'_'.$ENV{'form.courseid'})) {
    $r->print("You are not allowed to upload Scantron data to the requested course.<br />");
    if ($symb) {
       $r->print(&show_grading_menu_form($symb,$url));
  } else {   } else {
   $ENV{'form.upfile_associate'} = 'forward';      $r->print($doanotherupload);
  }   }
  $request->print(&csvuploadmap($request));   return '';
       }      }
       my %coursedata=&Apache::lonnet::coursedescription($ENV{'form.domainid'}.'_'.$ENV{'form.courseid'});
       $r->print("Doing upload to ".$coursedata{'description'}." <br />");
       my $home=&Apache::lonnet::homeserver($ENV{'form.courseid'},
    $ENV{'form.domainid'});
       my $fname=$ENV{'form.upfile.filename'};
       #FIXME
       #copied from lonnet::userfileupload()
       #make that function able to target a specified course
       # Replace Windows backslashes by forward slashes
       $fname=~s/\\/\//g;
       # Get rid of everything but the actual filename
       $fname=~s/^.*\/([^\/]+)$/$1/;
       # Replace spaces by underscores
       $fname=~s/\s+/\_/g;
       # Replace all other weird characters by nothing
       $fname=~s/[^\w\.\-]//g;
       # See if there is anything left
       unless ($fname) { return 'error: no uploaded file'; }
       my $uploadedfile=$fname;
       $fname='scantron_orig_'.$fname;
       if (length($ENV{'form.upfile'}) < 2) {
    $r->print("<font color='red'>Error:</font> The file you attempted to upload, <tt>".&HTML::Entities::encode($ENV{'form.upfile.filename'},'<>&"')."</tt>, contained no information. Please check that you entered the correct filename.");
     } else {      } else {
       $request->print("Unknown action: $command:");   my $result=&Apache::lonnet::finishuserfileupload($ENV{'form.courseid'},$ENV{'form.domainid'},$home,'upfile',$fname);
    if ($result =~ m|^/uploaded/|) {
       $r->print("<font color='green'>Success:</font> Successfully uploaded ".(length($ENV{'form.upfile'})-1)." bytes of data into location <tt>".$result."</tt>");
    } else {
       $r->print("<font color='red'>Error:</font> An error (".$result.") occurred when attempting to upload the file, <tt>".&HTML::Entities::encode($ENV{'form.upfile.filename'},'<>&"')."</tt>");
    }
     }      }
   }      if ($symb) {
   &send_footer($request);   $r->print(&scantron_selectphase($r,$uploadedfile));
   return OK;      } else {
    $r->print($doanotherupload);
       }
       return '';
   }
   
   sub valid_file {
       my ($requested_file)=@_;
       foreach my $filename (sort(&scantron_filenames())) {
    &Apache::lonnet::logthis("$requested_file  $filename");
    if ($requested_file eq $filename) { return 1; }
       }
       return 0;
   }
   
   sub scantron_download_scantron_data {
       my ($r)=@_;
       my $default_form_data=&defaultFormData(&get_symb_and_url($r,1));
       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(<<ERROR);
    <p>
       The requested file name was invalid.
           </p>
   ERROR
    $r->print(&show_grading_menu_form(&get_symb_and_url($r,1)));
    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);
       $r->print(<<DOWNLOAD);
       <p>
    <a href="$orig">Original</a> file as uploaded by the scantron office.
       </p>
       <p>
    <a href="$corrected">Corrections</a>, a file of corrected records that were used in grading.
       </p>
       <p>
    <a href="$skipped">Skipped</a>, a file of records that were skipped.
       </p>
   DOWNLOAD
       $r->print(&show_grading_menu_form(&get_symb_and_url($r,1)));
       return '';
   }
   
   #-------- end of section for handling grading scantron forms -------
   #
   #-------------------------------------------------------------------
   
   
   #-------------------------- Menu interface -------------------------
   #
   #--- Show a Grading Menu button - Calls the next routine ---
   sub show_grading_menu_form {
       my ($symb,$url)=@_;
       my $result.='<br /><form action="/adm/grades" method="post">'."\n".
    '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
    '<input type="hidden" name="url" value="'.$url.'" />'."\n".
    '<input type="hidden" name="saveState"  value="'.$ENV{'form.saveState'}.'" />'."\n".
    '<input type="hidden" name="command" value="gradingmenu" />'."\n".
    '<input type="submit" name="submit" value="Grading Menu" />'."\n".
    '</form>'."\n";
       return $result;
   }
   
   # -- Retrieve choices for grading form
   sub savedState {
       my %savedState = ();
       if ($ENV{'form.saveState'}) {
    foreach (split(/:/,$ENV{'form.saveState'})) {
       my ($key,$value) = split(/=/,$_,2);
       $savedState{$key} = $value;
    }
       }
       return \%savedState;
   }
   
   #--- Displays the main menu page -------
   sub gradingmenu {
       my ($request) = @_;
       my ($symb,$url)=&get_symb_and_url($request);
       if (!$symb) {return '';}
       my $probTitle = &Apache::lonnet::gettitle($symb);
   
       $request->print(<<GRADINGMENUJS);
   <script type="text/javascript" language="javascript">
       function checkChoice(formname,val,cmdx) {
    if (val <= 2) {
       var cmd = radioSelection(formname.radioChoice);
       var cmdsave = cmd;
    } else {
       cmd = cmdx;
       cmdsave = 'submission';
    }
    formname.command.value = cmd;
    formname.saveState.value = "saveCmd="+cmdsave+":saveSec="+pullDownSelection(formname.section)+
       ":saveSub="+pullDownSelection(formname.submitonly)+":saveStatus="+pullDownSelection(formname.Status);
    if (val < 5) formname.submit();
    if (val == 5) {
       if (!checkReceiptNo(formname,'notOK')) { return false;}
       formname.submit();
    }
       }
   
       function checkReceiptNo(formname,nospace) {
    var receiptNo = formname.receipt.value;
    var checkOpt = false;
    if (nospace == "OK" && isNaN(receiptNo)) {checkOpt = true;}
    if (nospace == "notOK" && (isNaN(receiptNo) || receiptNo == "")) {checkOpt = true;}
    if (checkOpt) {
       alert("Please enter a receipt number given by a student in the receipt box.");
       formname.receipt.value = "";
       formname.receipt.focus();
       return false;
    }
    return true;
       }
   </script>
   GRADINGMENUJS
       &commonJSfunctions($request);
       my $result='<h3>&nbsp;<font color="#339933">Manual Grading/View Submission</font></h3>';
       my ($table,undef,$hdgrade) = &showResourceInfo($url,$probTitle);
       $result.=$table;
       my (undef,$sections) = &getclasslist('all','0');
       my $savedState = &savedState();
       my $saveCmd = ($$savedState{'saveCmd'} eq '' ? 'submission' : $$savedState{'saveCmd'});
       my $saveSec = ($$savedState{'saveSec'} eq '' ? 'all' : $$savedState{'saveSec'});
       my $saveSub = ($$savedState{'saveSub'} eq '' ? 'all' : $$savedState{'saveSub'});
       my $saveStatus = ($$savedState{'saveStatus'} eq '' ? 'Active' : $$savedState{'saveStatus'});
   
       $result.='<form action="/adm/grades" method="post" name="gradingMenu">'."\n".
    '<input type="hidden" name="symb"        value="'.$symb.'" />'."\n".
    '<input type="hidden" name="url"         value="'.$url.'" />'."\n".
    '<input type="hidden" name="handgrade"   value="'.$hdgrade.'" />'."\n".
    '<input type="hidden" name="probTitle"   value="'.$probTitle.'" />'."\n".
    '<input type="hidden" name="command"     value="" />'."\n".
    '<input type="hidden" name="saveState"   value="" />'."\n".
    '<input type="hidden" name="gradingMenu" value="1" />'."\n".
    '<input type="hidden" name="showgrading" value="yes" />'."\n";
   
       $result.='<table width="100%" border=0><tr><td bgcolor=#777777>'."\n".
    '<table width=100% border=0><tr bgcolor="#e6ffff"><td colspan="2">'."\n".
    '&nbsp;<b>Select a Grading/Viewing Option</b></td></tr>'."\n".
    '<tr bgcolor="#ffffe6" valign="top"><td>'."\n";
   
       $result.='<table width="100%" border=0>';
       $result.='<tr bgcolor="#ffffe6" valign="top"><td>'."\n".
    '&nbsp;'.&mt('Select Section').': <select name="section">'."\n";
       if (ref($sections)) {
    foreach (sort (@$sections)) {
       $result.='<option value="'.$_.'" '.
    ($saveSec eq $_ ? 'selected="on"':'').'>'.$_.'</option>'."\n";
    }
       }
       $result.= '<option value="all" '.($saveSec eq 'all' ? 'selected="on"' : ''). '>all</select> &nbsp; ';
   
       $result.=&mt('Student Status').':</b>'.&Apache::lonhtmlcommon::StatusOptions($saveStatus,undef,1,undef);
   
       $result.='</td></tr>';
   
       $result.='<tr bgcolor="#ffffe6"valign="top"><td>'.
    '<input type="radio" name="radioChoice" value="submission" '.
    ($saveCmd eq 'submission' ? 'checked' : '').'> '.'<b>'.&mt('Current Resource').':</b> '.&mt('For one or more students').
    ' <select name="submitonly">'.
    '<option value="yes" '.
    ($saveSub eq 'yes' ? 'selected="on"' : '').'>with submissions</option>'.
    '<option value="graded" '.
    ($saveSub eq 'graded' ? 'selected="on"' : '').'>with ungraded submissions</option>'.
    '<option value="incorrect" '.
    ($saveSub eq 'incorrect' ? 'selected="on"' : '').'>with incorrect submissions</option>'.
    '<option value="all" '.
    ($saveSub eq 'all' ? 'selected="on"' : '').'>with any status</option></select></td></tr>'."\n";
   
       $result.='<tr bgcolor="#ffffe6"valign="top"><td>'.
    '<input type="radio" name="radioChoice" value="viewgrades" '.
    ($saveCmd eq 'viewgrades' ? 'checked' : '').'> '.
    '<b>Current Resource:</b> For all students in selected section or course</td></tr>'."\n";
   
       $result.='<tr bgcolor="#ffffe6" valign="top"><td>'.
    '<input type="radio" name="radioChoice" value="pickStudentPage" '.
    ($saveCmd eq 'pickStudentPage' ? 'checked' : '').'> '.
    'The <b>complete</b> set/page/sequence: For one student</td></tr>'."\n";
   
       $result.='<tr bgcolor="#ffffe6"><td><br />'.
    '<input type="button" onClick="javascript:checkChoice(this.form,\'2\');" value="Next->" />'.
    '</td></tr></table>'."\n";
   
       $result.='</td><td valign="top">';
   
       $result.='<table width="100%" border=0>';
       $result.='<tr bgcolor="#ffffe6"><td>'.
    '<input type="button" onClick="javascript:checkChoice(this.form,\'3\',\'csvform\');" value="'.&mt('Upload').'" />'.
    ' '.&mt('scores from file').' </td></tr>'."\n";
   
       $result.='<tr bgcolor="#ffffe6"valign="top"><td colspan="2">'.
    '<input type="button" onClick="javascript:checkChoice(this.form,\'4\',\'scantron_selectphase\');'.
    '" value="'.&mt('Grade').'" /> scantron forms</td></tr>'."\n";
   
       if ((&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'})) && ($symb)) {
    $result.='<tr bgcolor="#ffffe6"valign="top"><td>'.
       '<input type="button" onClick="javascript:checkChoice(this.form,\'5\',\'verify\');" value="'.&mt('Verify').'" />'.
       ' '.&mt('receipt').': '.
       &Apache::lonnet::recprefix($ENV{'request.course.id'}).
       '-<input type="text" name="receipt" size="4" onChange="javascript:checkReceiptNo(this.form,\'OK\')">'.
       '</td></tr>'."\n";
       } 
   
       $result.='</form></td></tr></table>'."\n".
    '</td></tr></table>'."\n".
    '</td></tr></table>'."\n";
       return $result;
   }
   
   sub handler {
       my $request=$_[0];
   
       undef(%perm);
       if ($ENV{'browser.mathml'}) {
    &Apache::loncommon::content_type($request,'text/xml');
       } else {
    &Apache::loncommon::content_type($request,'text/html');
       }
       $request->send_http_header;
       return '' if $request->header_only;
       &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
       my $url=$ENV{'form.url'};
       my $symb=$ENV{'form.symb'};
       my @commands=&Apache::loncommon::get_env_multiple('form.command');
       my $command=$commands[0];
       if ($#commands > 0) {
    &Apache::lonnet::logthis("grades got multiple commands ".join(':',@commands));
       }
       if (!$url) {
    my ($temp1,$temp2);
    ($temp1,$temp2,$ENV{'form.url'})=&Apache::lonnet::decode_symb($symb);
    $url = $ENV{'form.url'};
       }
       &send_header($request);
       if ($url eq '' && $symb eq '' && $command eq '') {
    if ($ENV{'user.adv'}) {
       if (($ENV{'form.codeone'}) && ($ENV{'form.codetwo'}) &&
    ($ENV{'form.codethree'})) {
    my $token=$ENV{'form.codeone'}.'*'.$ENV{'form.codetwo'}.'*'.
       $ENV{'form.codethree'};
    my ($tsymb,$tuname,$tudom,$tcrsid)=
       &Apache::lonnet::checkin($token);
    if ($tsymb) {
       my ($map,$id,$url)=&Apache::lonnet::decode_symb($tsymb);
       if (&Apache::lonnet::allowed('mgr',$tcrsid)) {
    $request->print(&Apache::lonnet::ssi_body('/res/'.$url,
     ('grade_username' => $tuname,
      'grade_domain' => $tudom,
      'grade_courseid' => $tcrsid,
      'grade_symb' => $tsymb)));
       } else {
    $request->print('<h3>Not authorized: '.$token.'</h3>');
       }
    } else {
       $request->print('<h3>Not a valid DocID: '.$token.'</h3>');
    }
       } else {
    $request->print(&Apache::lonxml::tokeninputfield());
       }
    }
       } else {
    if (!($perm{'vgr'}=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}))) {
       if ($perm{'vgr'}=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}.'/'.$ENV{'request.course.sec'})) {
    $perm{'vgr_section'}=$ENV{'request.course.sec'};
       } else {
    delete($perm{'vgr'});
       }
    }
    if (!($perm{'mgr'}=&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'}))) {
       if ($perm{'mgr'}=&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'}.'/'.$ENV{'request.course.sec'})) {
    $perm{'mgr_section'}=$ENV{'request.course.sec'};
       } else {
    delete($perm{'mgr'});
       }
    }
    if ($command eq 'submission' && $perm{'vgr'}) {
       ($ENV{'form.student'} eq '' ? &listStudents($request) : &submission($request,0,0));
    } elsif ($command eq 'pickStudentPage' && $perm{'vgr'}) {
       &pickStudentPage($request);
    } elsif ($command eq 'displayPage' && $perm{'vgr'}) {
       &displayPage($request);
    } elsif ($command eq 'gradeByPage' && $perm{'mgr'}) {
       &updateGradeByPage($request);
    } elsif ($command eq 'processGroup' && $perm{'vgr'}) {
       &processGroup($request);
    } elsif ($command eq 'gradingmenu' && $perm{'vgr'}) {
       $request->print(&gradingmenu($request));
    } elsif ($command eq 'viewgrades' && $perm{'vgr'}) {
       $request->print(&viewgrades($request));
    } elsif ($command eq 'handgrade' && $perm{'mgr'}) {
       $request->print(&processHandGrade($request));
    } elsif ($command eq 'editgrades' && $perm{'mgr'}) {
       $request->print(&editgrades($request));
    } elsif ($command eq 'verify' && $perm{'vgr'}) {
       $request->print(&verifyreceipt($request));
    } elsif ($command eq 'csvform' && $perm{'mgr'}) {
       $request->print(&upcsvScores_form($request));
    } elsif ($command eq 'csvupload' && $perm{'mgr'}) {
       $request->print(&csvupload($request));
    } elsif ($command eq 'csvuploadmap' && $perm{'mgr'} ) {
       $request->print(&csvuploadmap($request));
    } elsif ($command eq 'csvuploadassign' && $perm{'mgr'}) {
       if ($ENV{'form.associate'} ne 'Reverse Association') {
    $request->print(&csvuploadassign($request));
       } else {
    if ( $ENV{'form.upfile_associate'} ne 'reverse' ) {
       $ENV{'form.upfile_associate'} = 'reverse';
    } else {
       $ENV{'form.upfile_associate'} = 'forward';
    }
    $request->print(&csvuploadmap($request));
       }
    } elsif ($command eq 'scantron_selectphase' && $perm{'mgr'}) {
       $request->print(&scantron_selectphase($request));
     } elsif ($command eq 'scantron_warning' && $perm{'mgr'}) {
        $request->print(&scantron_do_warning($request));
    } elsif ($command eq 'scantron_validate' && $perm{'mgr'}) {
       $request->print(&scantron_validate_file($request));
    } elsif ($command eq 'scantron_process' && $perm{'mgr'}) {
       $request->print(&scantron_process_students($request));
     } elsif ($command eq 'scantronupload' && 
     (&Apache::lonnet::allowed('usc',$ENV{'request.role.domain'})||
     &Apache::lonnet::allowed('usc',$ENV{'request.course.id'}))) {
        $request->print(&scantron_upload_scantron_data($request)); 
     } elsif ($command eq 'scantronupload_save' &&
     (&Apache::lonnet::allowed('usc',$ENV{'request.role.domain'})||
     &Apache::lonnet::allowed('usc',$ENV{'request.course.id'}))) {
        $request->print(&scantron_upload_scantron_data_save($request));
     } elsif ($command eq 'scantron_download' &&
    &Apache::lonnet::allowed('usc',$ENV{'request.course.id'})) {
        $request->print(&scantron_download_scantron_data($request));
    } elsif ($command) {
       $request->print("Access Denied ($command)");
    }
       }
       &send_footer($request);
       return '';
   }
   
   sub send_header {
       my ($request)= @_;
       $request->print(&Apache::lontexconvert::header());
   #  $request->print("
   #<script>
   #remotewindow=open('','homeworkremote');
   #remotewindow.close();
   #</script>"); 
       $request->print(&Apache::loncommon::bodytag('Grading'));
       $request->rflush();
   }
   
   sub send_footer {
       my ($request)= @_;
       $request->print('</body></html>');
 }  }
   
 1;  1;
Removed from v.1.35  
changed lines
  Added in v.1.216

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>