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Diff for /loncom/homework/inputtags.pm between versions 1.13 and 1.195

version 1.13, 2000/12/08 20:53:45 version 1.195, 2006/06/09 16:27:28
Line 1 Line 1
 # The LearningOnline Network with CAPA  # The LearningOnline Network with CAPA
 # input  definitons  # input  definitons
   #
   # $Id$
   #
   # Copyright Michigan State University Board of Trustees
   #
   # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
   #
   # LON-CAPA is free software; you can redistribute it and/or modify
   # it under the terms of the GNU General Public License as published by
   # the Free Software Foundation; either version 2 of the License, or
   # (at your option) any later version.
   #
   # LON-CAPA is distributed in the hope that it will be useful,
   # but WITHOUT ANY WARRANTY; without even the implied warranty of
   # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   # GNU General Public License for more details.
   #
   # You should have received a copy of the GNU General Public License
   # along with LON-CAPA; if not, write to the Free Software
   # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   #
   # /home/httpd/html/adm/gpl.txt
   #
   # http://www.lon-capa.org/
   
 package Apache::inputtags;  package Apache::inputtags;
   use HTML::Entities();
 use strict;  use strict;
   use Apache::loncommon;
   use Apache::lonlocal;
   use Apache::lonnet;
   use lib '/home/httpd/lib/perl/';
   use LONCAPA;
    
   
 sub BEGIN {  BEGIN {
   &Apache::lonxml::register('Apache::inputtags',('textarea','textline','datasubmission'));      &Apache::lonxml::register('Apache::inputtags',('hiddenline','textfield','textline'));
 }  }
   
   #   Initializes a set of global variables used during the parse of the problem.
   #
   #  @Apache::inputtags::input        - List of current input ids.
   #  @Apache::inputtags::inputlist    - List of all input ids seen this problem.
   #  @Apache::inputtags::response     - List of all current resopnse ids.
   #  @Apache::inputtags::responselist - List of all response ids seen this 
   #                                       problem.
   #  @Apache::inputtags::hint         - List of all hint ids.
   #  @Apache::inputtags::hintlist     - List of all hint ids seen this problem.
   #  @Apache::inputtags::previous     - List describing if specific responseds
   #                                       have been used
   #  @Apache::inputtags::previous_version - Submission responses were used in.
   #  $Apache::inputtags::part         - Current part id (valid only in 
   #                                       <problem>)
   #                                     0 if not in a part.
   #  @Apache::inputtags::partlist     - List of part ids seen in the current
   #                                       <problem>
   #  @Apache::inputtags::status       - List of problem  statuses. First 
   #                                     element is the status of the <problem>
   #                                     the remainder are for individual <part>s.
   #  %Apache::inputtags::params       - Hash of defined parameters for the
   #                                     current response.
   #  @Apache::inputtags::import       - List of all ids for <import> thes get
   #                                     join()ed and prepended.
   #  @Apache::inputtags::importlist   - List of all import ids seen.
   #  $Apache::inputtags::response_with_no_part
   #                                   - Flag set true if we have seen a response
   #                                     that is not inside a <part>
   #  %Apache::inputtags::answertxt    - <*response> tags store correct
   #                                     answer strings for display by <textline/>
   #                                     in this hash.
   
 sub initialize_inputtags {  sub initialize_inputtags {
   @Apache::inputtags::input=();      @Apache::inputtags::input=();
   @Apache::inputtags::response=();      @Apache::inputtags::inputlist=();
   @Apache::inputtags::responselist=();      @Apache::inputtags::response=();
   @Apache::inputtags::answergroup=();      @Apache::inputtags::responselist=();
   $Apache::inputtags::part='';      @Apache::inputtags::hint=();
   %Apache::inputtags::params=();      @Apache::inputtags::hintlist=();
 }      @Apache::inputtags::previous=();
       @Apache::inputtags::previous_version=();
 sub start_textarea {      $Apache::inputtags::part='';
   my ($target,$token,$parstack,$parser,$safeeval)=@_;      @Apache::inputtags::partlist=();
   my $result = "";      @Apache::inputtags::status=();
   if ($target eq 'web') {      %Apache::inputtags::params=();
     $result= '<textarea name="HWVAL'.$Apache::inputtags::curvalue.'" value="">';      @Apache::inputtags::import=();
   }      @Apache::inputtags::importlist=();
   return $result;      $Apache::inputtags::response_with_no_part=0;
 }      %Apache::inputtags::answertxt=();
   }
 sub end_textarea {  
   my ($target,$token,$parstack,$parser,$safeeval)=@_;  sub check_for_duplicate_ids {
   if ($target eq 'web') {      my %check;
     return "</textarea>";      foreach my $id (@Apache::inputtags::partlist,
   }       @Apache::inputtags::responselist,
   return '';      @Apache::inputtags::hintlist,
       @Apache::inputtags::importlist) {
    $check{$id}++;
       }
       my @duplicates;
       foreach my $id (sort(keys(%check))) {
    if ($check{$id} > 1) {
       push(@duplicates,$id);
    }
       }
       if (@duplicates) {
    &Apache::lonxml::error("Duplicated ids found, problem will operate incorrectly. Duplicated ids seen: ",join(', ',@duplicates));
       }
   }
   
   sub start_input {
       my ($parstack,$safeeval)=@_;
       my $id = &Apache::lonxml::get_param('id',$parstack,$safeeval);
       if ($id eq '') { $id = $Apache::lonxml::curdepth; }
       push (@Apache::inputtags::input,$id);
       push (@Apache::inputtags::inputlist,$id);
       return $id;
   }
   
   sub end_input {
       pop @Apache::inputtags::input;
       return '';
   }
   
   sub addchars {
       my ($fieldid,$addchars)=@_;
       my $output='';
       foreach (split(/\,/,$addchars)) {
    $output.='<a href="javascript:void(document.forms.lonhomework.'.
       $fieldid.'.value+=\''.$_.'\')">'.$_.'</a> ';
       }
       return $output;
   }
   
   sub start_textfield {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       my $result = "";
       my $id = &start_input($parstack,$safeeval);
       my $resid=$Apache::inputtags::response[-1];
       if ($target eq 'web') {
    $Apache::lonxml::evaluate--;
    if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
       my $partid=$Apache::inputtags::part;
       my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$resid.submission"},'<>&"');
       my $cols = &Apache::lonxml::get_param('cols',$parstack,$safeeval);
       if ( $cols eq '') { $cols = 80; }
       my $rows = &Apache::lonxml::get_param('rows',$parstack,$safeeval);
       if ( $rows eq '') { $rows = 16; }
       my $addchars=&Apache::lonxml::get_param('addchars',$parstack,$safeeval);
       $result='';
       if ($addchars) {
    $result.=&addchars('HWVAL_'.$resid,$addchars);
       }
       &Apache::lonhtmlcommon::add_htmlareafields('HWVAL_'.$resid);
       $result.= '<textarea wrap="hard" name="HWVAL_'.$resid.'" id="HWVAL_'.$resid.'" '.
    "rows=\"$rows\" cols=\"$cols\">".$oldresponse;
       if ($oldresponse ne '') {
   
    #get rid of any startup text if the user has already responded
    &Apache::lonxml::get_all_text("/textfield",$parser,$style);
       }
    } else {
       #right or wrong don't show it
       #$result='<table border="1"><tr><td><i>'.$oldresponse.'</i></td></tr></table>';
       $result='';
       #get rid of any startup text
       &Apache::lonxml::get_all_text("/textfield",$parser,$style);
    }
       } elsif ($target eq 'grade') {
    my $seedtext=&Apache::lonxml::get_all_text("/textfield",$parser,
      $style);
    if ($seedtext eq $env{'form.HWVAL_'.$resid}) {
       # if the seed text is still there it wasn't a real submission
       $env{'form.HWVAL_'.$resid}='';
    }
       } elsif ($target eq 'edit') {
    $result.=&Apache::edit::tag_start($target,$token);
    $result.=&Apache::edit::text_arg('Rows:','rows',$token,4);
    $result.=&Apache::edit::text_arg('Columns:','cols',$token,4);
    $result.=&Apache::edit::text_arg
       ('Click-On Texts (comma sep):','addchars',$token,10);
    my $bodytext=&Apache::lonxml::get_all_text("/textfield",$parser,
      $style);
    $result.=&Apache::edit::editfield($token->[1],$bodytext,'Text you want to appear by default:',80,2);
       } elsif ($target eq 'modified') {
    my $constructtag=&Apache::edit::get_new_args($token,$parstack,
        $safeeval,'rows','cols',
        'addchars');
    if ($constructtag) {
       $result = &Apache::edit::rebuild_tag($token);
    } else {
       $result=$token->[4];
    }
    $result.=&Apache::edit::modifiedfield("/textfield",$parser);
       } elsif ($target eq 'tex') {
    my $number_of_lines = &Apache::lonxml::get_param('rows',$parstack,$safeeval);
    my $width_of_box = &Apache::lonxml::get_param('cols',$parstack,$safeeval);
    if ($$tagstack[-2] eq 'essayresponse' and $Apache::lonhomework::type eq 'exam') {
       $result = '\fbox{\fbox{\parbox{\textwidth-5mm}{';
       for (my $i=0;$i<int $number_of_lines*2;$i++) {$result.='\strut \\\\ ';}
       $result.='\strut \\\\\strut \\\\\strut \\\\\strut \\\\}}}';
    } else {
       my $TeXwidth=$width_of_box/80;
       $result = '\vskip 1 mm \fbox{\fbox{\parbox{'.$TeXwidth.'\textwidth-5mm}{';
       for (my $i=0;$i<int $number_of_lines*2;$i++) {$result.='\strut \\\\ ';}
       $result.='}}}\vskip 2 mm ';
    }
       }
       return $result;
   }
   
   sub end_textfield {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $result;
       if ($target eq 'web') {
    $Apache::lonxml::evaluate++;
    if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
       return "</textarea>";
    }
       } elsif ($target eq 'edit') {
    $result=&Apache::edit::end_table();
       }
       &end_input;
       return $result;
   }
   
   sub exam_score_line {
       my ($target) = @_;
   
       my $result;
       if ($target eq 'tex') {
    my $repetition = &Apache::response::repetition();
    $result.='\begin{enumerate}';
    if ($env{'request.state'} eq "construct" ) {$result.='\item[\strut]';}
    foreach my $i (0..$repetition-1) {
       $result.='\item[\textbf{'.
    ($Apache::lonxml::counter+$i).
    '}.]\textit{Leave blank on scoring form}\vskip 0 mm';
    }
    $result.= '\end{enumerate}';
       }
   
       return $result;
   }
   
   sub exam_box {
       my ($target) = @_;
       my $result;
   
       if ($target eq 'tex') {
    $result .= '\fbox{\fbox{\parbox{\textwidth-5mm}{\strut\\\\\strut\\\\\strut\\\\\strut\\\\}}}';
    $result .= &exam_score_line($target);
       } elsif ($target eq 'web') {
    my $id=$Apache::inputtags::response[-1];
    $result.= '<br /><br />
                      <textarea name="HWVAL_'.$id.'" rows="4" cols="50">
                      </textarea> <br /><br />';
       }
       return $result;
   }
   
   sub needs_exam_box {
       my ($tagstack) = @_;
       my @tags = ('formularesponse',
    'stringresponse',
    'reactionresponse',
    'organicresponse',
    );
   
       foreach my $tag (@tags) {
    if (grep(/\Q$tag\E/,@$tagstack)) {
       return 1;
    }
       }
       return 0;
 }  }
   
 sub start_textline {  sub start_textline {
   my ($target,$token,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   my $result = "";      my $result = "";
   if ($target eq 'web') {      if ($target eq 'web') {
     my $args ='';   $Apache::lonxml::evaluate--;
     if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }   my $partid=$Apache::inputtags::part;
     my $size = &Apache::run::run("{$args;".'return $size}',$safeeval);   my $id=$Apache::inputtags::response[-1];
     if ($size eq '') { $size=20; }   if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER'
     $result= '<input type="text" name="HWVAL'.$Apache::inputtags::curvalue.'" value="" size="'.$size.'">';      || ($Apache::inputtags::status[-1] eq 'CANNOT_ANSWER' &&
   }   $Apache::lonhomework::history{"resource.$partid.solved"} !~ /^correct/ )) {
   return $result;      my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);
       my $maxlength;
       if ($size eq '') { $size=20; } else {
    if ($size < 20) { $maxlength=$size; }
       }
       my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"},'<>&"');
       if ($Apache::lonhomework::type ne 'exam') {
    my $addchars=&Apache::lonxml::get_param('addchars',$parstack,$safeeval);
    $result='';
    if ($addchars) {
       $result.=&addchars('HWVAL_'.$id,$addchars);
    }
    my $readonly=&Apache::lonxml::get_param('readonly',$parstack,
    $safeeval);
    if (lc($readonly) eq 'yes' 
       || $Apache::inputtags::status[-1] eq 'CANNOT_ANSWER') {
       $readonly=' readonly="readonly" ';
    } else {
       $readonly='';
    }
    my $name = 'HWVAL_'.$id;
    if ($Apache::inputtags::status[-1] eq 'CANNOT_ANSWER') {
       $name = "none";
    }
    $result.= '<input type="text" '.$readonly.' name="'.$name.'" value="'.
       $oldresponse.'" size="'.$size.'" maxlength="'.$maxlength.'" />';
       }
       if ($Apache::lonhomework::type eq 'exam'
    && &needs_exam_box($tagstack)) {
    $result.=&exam_box($target);
       }
    } else {
       #right or wrong don't show what was last typed in.
       $result='<b>'.$Apache::inputtags::answertxt{$id}.'</b>';
       #$result='';
    }
       } elsif ($target eq 'edit') {
    $result=&Apache::edit::tag_start($target,$token);
    $result.=&Apache::edit::text_arg('Size:','size',$token,'5').
       &Apache::edit::text_arg('Click-On Texts (comma sep):',
       'addchars',$token,10);
           $result.=&Apache::edit::select_arg('Readonly:','readonly',
      ['no','yes'],$token);
    $result.=&Apache::edit::end_row();
    $result.=&Apache::edit::end_table();
       } elsif ($target eq 'modified') {
    my $constructtag=&Apache::edit::get_new_args($token,$parstack,
        $safeeval,'size',
        'addchars','readonly');
    if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
       } elsif ($target eq 'tex' 
        && $Apache::lonhomework::type ne 'exam') {
    my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);
    if ($size != 0) {$size=$size*2; $size.=' mm';} else {$size='40 mm';}
    $result='\framebox['.$size.'][s]{\tiny\strut}';
   
       } elsif ($target eq 'tex' 
        && $Apache::lonhomework::type eq 'exam'
        && &needs_exam_box($tagstack)) {
    $result.=&exam_box($target);
       }
       return $result;
 }  }
   
 sub end_textline {  sub end_textline {
   my ($target,$token,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   return "";      if    ($target eq 'web') { $Apache::lonxml::evaluate++; }
       elsif ($target eq 'edit') { return ('','no'); }
       return "";
   }
   
   sub start_hiddenline {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $result = "";
       if ($target eq 'web') {
    $Apache::lonxml::evaluate--;
    if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
       my $partid=$Apache::inputtags::part;
       my $id=$Apache::inputtags::response[-1];
       my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"},'<>&"');
       if ($Apache::lonhomework::type ne 'exam') {
    $result= '<input type="hidden" name="HWVAL_'.$id.'" value="'.
       $oldresponse.'" />';
       }
    }
       } elsif ($target eq 'edit') {
    $result=&Apache::edit::tag_start($target,$token);
    $result.=&Apache::edit::end_table;
       }
   
       if ( ($target eq 'web' || $target eq 'tex')
    && $Apache::lonhomework::type eq 'exam'
    && &needs_exam_box($tagstack)) {
    $result.=&exam_box($target);
       }
       return $result;
   }
   
   sub end_hiddenline {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       if    ($target eq 'web') { $Apache::lonxml::evaluate++; }
       elsif ($target eq 'edit') { return ('','no'); }
       return "";
   }
   
   # $part -> partid
   # $id -> responseid
   # $uploadefiletypes -> comma seperated list of extensions allowed or * for any
   # $which -> 'uploadedonly'  -> only newly uploaded files
   #           'portfolioonly' -> only allow files from portfolio
   #           'both' -> allow files from either location
   # $extratext -> additional text to go between the link and the input box
   # returns a table row <tr> 
   sub file_selector {
       my ($part,$id,$uploadedfiletypes,$which,$extratext)=@_;
       if (!$uploadedfiletypes) { return ''; }
   
       my $jspart=$part;
       $jspart=~s/\./_/g;
   
       my $result;
       
       $result.='<tr><td>';
       if ($uploadedfiletypes ne '*') {
    $result.=
       &mt('Allowed filetypes: <b>[_1]</b>',$uploadedfiletypes).'<br />';
       }
       if ($which eq 'uploadonly' || $which eq 'both') { 
    $result.=&mt('Submit a file: (only one file can be uploaded)').
       ' <br /><input type="file" size="50" name="HWFILE'.
       $jspart.'_'.$id.'" /><br />';
    my $uploadedfile= &HTML::Entities::encode($Apache::lonhomework::history{"resource.$part.$id.uploadedfile"},'<>&"');
   
    if ($uploadedfile) {
       my $url=$Apache::lonhomework::history{"resource.$part.$id.uploadedurl"};
       &Apache::lonxml::extlink($url);
       &Apache::lonnet::allowuploaded('/adm/essayresponse',$url);
       my $icon=&Apache::loncommon::icon($url);
       my $curfile='<a href="'.$url.'"><img src="'.$icon.
    '" border="0" />'.$uploadedfile.'</a>';
       $result.=&mt('Currently submitted: <tt>[_1]</tt>',$curfile);
    } else {
       #$result.=&mt('(Hand in a file you have prepared on your computer)');
    }
       }
       if ( $which eq 'both') { 
    $result.='<br />'.'<strong>'.&mt('OR:').'</strong><br />';
       }
       if ($which eq 'portfolioonly' || $which eq 'both') { 
    $result.=$extratext.'<a href='."'".'javascript:void(window.open("/adm/portfolio?mode=selectfile&amp;fieldname=HWPORT'.$jspart.'_'.$id.'","cat","height=600,width=800,scrollbars=1,resizable=1,menubar=2,location=1"))'."'".'>'.
       &mt('Select Portfolio Files').'</a><br />'.
       '<input type="text" size="50" name="HWPORT'.$jspart.'_'.$id.'" value="" />'.
       '<br />';
    if ($Apache::lonhomework::history{"resource.$part.$id.portfiles"}=~/[^\s]/){
       my (@filelist,@bad_file_list);
       foreach my $file (split(',',&unescape($Apache::lonhomework::history{"resource.$part.$id.portfiles"}))) {
    my (undef,undef,$domain,$user)=&Apache::lonxml::whichuser();
    my $url="/uploaded/$domain/$user/portfolio$file";
    my $icon=&Apache::loncommon::icon($url);
    push(@filelist,'<a href="'.$url.'"><img src="'.$icon.
        '" border="0" />'.$file.'</a>');
    if (! &Apache::lonnet::stat_file($url)) {
       &Apache::lonnet::logthis("bad file is $url");
       push(@bad_file_list,'<a href="'.$url.'"><img src="'.$icon.
    '" border="0" />'.$file.'</a>');
    }
       }
       $result.=&mt("Portfolio files previously selected: <strong>[_1]</strong>",join(', ',@filelist));
       if (@bad_file_list) {
    $result.='<br />'.&mt('<font color="red">These file(s) don\'t exist:</font> <strong>[_1]</strong>',join(', ',@bad_file_list));
       }
    }
       }
       $result.='</td></tr>'; 
       return $result;
 }  }
   
 #answergroup is deprecated  sub checkstatus {
 #sub start_answergroup {      my ($value,$awardref,$msgref)=@_;
 #  my ($target,$token,$parstack,$parser,$safeeval)=@_;      for (my $i=0;$i<=$#$awardref;$i++) {
 #  my $args ='';   if ($$awardref[$i] eq $value) {
 #  if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }      return ($$awardref[$i],$$msgref[$i]);
 #  my $id = &Apache::run::run("{$args;".'return $id}',$safeeval);   }
 #  push (@Apache::inputtags::answergroup,$id);      }
 #  if ($target == 'web') {      return(undef,undef);
 #      }
 #  }  
 #  return '';  sub valid_award {
 #}      my ($award) =@_;
 #      foreach my $possibleaward ('EXTRA_ANSWER','MISSING_ANSWER', 'ERROR',
 #sub end_answergroup {         'NO_RESPONSE',
 #  my ($target,$token,$parstack,$parser,$safeeval)=@_;         'TOO_LONG', 'UNIT_INVALID_INSTRUCTOR',
 #  return ''; # <answergroup> has ben deprecated         'UNIT_INVALID_STUDENT', 'UNIT_IRRECONCIBLE',
 #  my $args ='';         'UNIT_FAIL', 'NO_UNIT',
 #  if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }         'UNIT_NOTNEEDED', 'WANTED_NUMERIC',
 #  my $id = &Apache::run::run("{$args;".'return $id}',$safeeval);         'BAD_FORMULA', 'SIG_FAIL', 'INCORRECT', 
 #  push (@Apache::inputtags::answergroup,$id);         'MISORDERED_RANK', 'INVALID_FILETYPE',
 #  my $result='';         'DRAFT', 'SUBMITTED', 'ASSIGNED_SCORE',
 #  my $button='<input type="submit" name="submit" value="Submit All Answers">';         'APPROX_ANS', 'EXACT_ANS','COMMA_FAIL') {
 #  my $showbutton='1';   if ($award eq $possibleaward) { return 1; }
 #  my $usedtry='1';      }
 #  my $response='';      return 0;
 #  if ( $target == 'web' ) {  
 #    if ( defined $ENV{'form.submit'}) {  
 #    }  
 #    if ($showbutton > 0) { $result.=$button }  
 #  }  
 #  pop @Apache::inputtags::answergroup;  
 #  return $result;  
 #}  
   
   
 sub start_datasubmission {  
 }  
   
 sub end_datasubmission {  
   my ($target,$token,$parstack,$parser,$safeeval)=@_;  
   if ( $target == 'web' ) {  
     return '<input type="submit" name="submit" value="Submit All Data">';  
   }  
   return '';  
 }  }
   
 sub finalizeawards {  sub finalizeawards {
   my $result='';      my ($awardref,$msgref,$nameref,$reverse)=@_;
   my $award;      my $result=undef;
   if ($#_ == '-1') { $result = "NO_RESPONSE"; }      my $award;
   foreach $award (@_) { if ($award eq '') {$result='MISSING_ANSWER'; last;}}      my $msg;
   if ($result eq '' ) {      if ($#$awardref == -1) { $result = "NO_RESPONSE"; }
     foreach $award (@_) {       if ($result eq '' ) {
       if ($award eq 'UNIT_FAIL' ||   my $blankcount;
   $award eq 'NO_UNIT' ||   foreach $award (@$awardref) {
   $award eq 'UNIT_NOTNEEDED') {      if ($award eq '') {
  $result=$award; last;   $result='MISSING_ANSWER';
       }   $blankcount++;
     }      }
   }   }
   if ($result eq '' ) {   if ($blankcount == ($#$awardref + 1)) { $result = 'NO_RESPONSE'; }
     foreach $award (@_) {       }
       if ($award eq 'WANTED_NUMERIC' ||       if (defined($result)) { return ($result,$msg); }
   $award eq 'BAD_FORMULA') {$result=$award; last;}  
     }      # these awards are ordered from most important error through best correct
   }      
   if ($result eq '' ) {      my @awards = ('EXTRA_ANSWER', 'MISSING_ANSWER', 'ERROR', 'NO_RESPONSE',
     foreach $award (@_) { if ($award eq 'SIG_FAIL') {$result=$award; last;} }    'TOO_LONG',
   }    'UNIT_INVALID_INSTRUCTOR', 'UNIT_INVALID_STUDENT',
   if ($result eq '' ) {    'UNIT_IRRECONCIBLE', 'UNIT_FAIL', 'NO_UNIT',
     foreach $award (@_) { if ($award eq 'INCORRECT') {$result=$award; last;} }    'UNIT_NOTNEEDED', 'WANTED_NUMERIC', 'BAD_FORMULA',
   }    'COMMA_FAIL', 'SIG_FAIL', 'INCORRECT', 'MISORDERED_RANK',
   if ($result eq '' ) {    'INVALID_FILETYPE', 'DRAFT', 'SUBMITTED', 'ASSIGNED_SCORE',
     foreach $award (@_) { if ($award eq 'APPROX_ANS') {$result=$award; last;} }    'APPROX_ANS', 'EXACT_ANS');
   }      if ($reverse) { @awards=reverse(@awards); }
   if ($result eq '' ) { $result='EXACT_ANS'; }      foreach my $possibleaward (@awards) {
   return $result   ($result,$msg)=&checkstatus($possibleaward,$awardref,$msgref);
    if (defined($result)) { return ($result,$msg); }
       }
       return ('ERROR',undef);
 }  }
   
 sub decideoutput {  sub decideoutput {
   my ($award)=@_;      my ($award,$awarded,$awardmsg,$solved,$previous,$target)=@_;
   my $message='';      my $message='';
   my $button=0;      my $button=0;
   if      ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS' ) {      my $previousmsg;
     $message = "Correct computer gets %s";      my $bgcolor='orange';
     $button=0;      my $added_computer_text=0;
   } elsif ($award eq 'NO_RESPONSE') {      my %possiblecolors =
     $message = '';   ( 'correct' => '#aaffaa',
     $button=1;    'charged_try' => '#ffaaaa',
   } elsif ($award eq 'WANTED_NUMERIC') {    'not_charged_try' => '#ffffaa',
     $message = "This question expects a numeric answer";    'no_message' => '#fffff',
     $button=1;    );
   } elsif ($award eq 'SIG_FAIL') {  
     $message = "Please adjust significant figures, you provided %s significant figures";      my $part = $Apache::inputtags::part;
     $button=1;      my $handgrade = 
   } elsif ($award eq 'UNIT_FAIL') {   ('yes' eq lc(&Apache::lonnet::EXT("resource.$part.handgrade")));
     $message = "Units incorrect, Computer reads units as %s";      
     $button=1;      my $computer = ($handgrade)? ''
   } elsif ($award eq 'UNIT_NOTNEEDED') {                         : " ".&mt("Computer's answer now shown above.");
     $message = "Only a number required, Computer reads units of %s";      &Apache::lonxml::debug("handgrade has :$handgrade:");
     $button=1;  
   } elsif ($award eq 'NO_UNIT') {      if ($previous) { $previousmsg=&mt('You have entered that answer before'); }
     $message = "Units required";      
     $button=1;      if ($solved =~ /^correct/) {
   } elsif ($award eq 'BAD_FORMULA') {          $bgcolor=$possiblecolors{'correct'};
     $message = "Unable to understand formula";   $message=&mt('You are correct.');
     $button=1;   if ($awarded < 1 && $awarded > 0) {
   } elsif ($award eq 'INCORRECT') {      $message=&mt('You are partially correct.');
     $message = "Incorrect";      $bgcolor=$possiblecolors{'not_charged_try'};
     $button=1;   } elsif ($awarded < 1) {
   } else {      $message=&mt('Incorrect.');
     $message = "Unknown message: $award";      $bgcolor=$possiblecolors{'charged_try'};
     $button=1;   }
   }   if ($env{'request.filename'} =~ 
   return ($button,$message);      m|/res/lib/templates/examupload.problem$|) {
       $message = &mt("A score has been assigned.");
       $added_computer_text=1;
    } else {
       if ($target eq 'tex') {
    $message = '\textbf{'.$message.'}';
       } else {
    $message = "<b>".$message."</b>";
    $message.= $computer;
       }
       $added_computer_text=1;
       unless ($env{'course.'.
        $env{'request.course.id'}.
        '.disable_receipt_display'} eq 'yes') { 
    $message.=(($target eq 'web')?'<br />':' ').
       &mt('Your receipt is').' '.&Apache::lonnet::receipt($Apache::inputtags::part).
       (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'');
       }
    }
    $button=0;
    $previousmsg='';
       } elsif ($solved =~ /^excused/) {
    if ($target eq 'tex') {
       $message = ' \textbf{'.&mt('You are excused from the problem.').'} ';
    } else {
       $message = "<b>".&mt('You are excused from the problem.')."</b>";
    }
    $bgcolor=$possiblecolors{'charged_try'};
    $button=0;
    $previousmsg='';
       } elsif ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS' ) {
    if ($solved =~ /^incorrect/ || $solved eq '') {
       $message = &mt("Incorrect").".";
       $bgcolor=$possiblecolors{'charged_try'};
       $button=1;
    } else {
       if ($target eq 'tex') {
    $message = '\textbf{'.&mt('You are correct.').'}';
       } else {
    $message = "<b>".&mt('You are correct.')."</b>";
    $message.= $computer;
       }
       $added_computer_text=1;
       unless ($env{'course.'.
        $env{'request.course.id'}.
        '.disable_receipt_display'} eq 'yes') { 
    $message.=(($target eq 'web')?'<br />':' ').
       'Your receipt is '.&Apache::lonnet::receipt($Apache::inputtags::part).
       (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'');
       }
       $bgcolor=$possiblecolors{'correct'};
       $button=0;
       $previousmsg='';
    }
       } elsif ($award eq 'NO_RESPONSE') {
    $message = '';
    $bgcolor=$possiblecolors{'no_feedback'};
    $button=1;
       } elsif ($award eq 'EXTRA_ANSWER') {
    $message = &mt('Some extra items were submitted.');
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button = 1;
       } elsif ($award eq 'MISSING_ANSWER') {
    $message = &mt('Some items were not submitted.');
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button = 1;
       } elsif ($award eq 'ERROR') {
    $message = &mt('An error occured while grading your answer.');
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button = 1;
       } elsif ($award eq 'TOO_LONG') {
    $message = &mt("The submitted answer was too long.");
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'WANTED_NUMERIC') {
    $message = &mt("This question expects a numeric answer.");
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'MISORDERED_RANK') {
    $message = &mt('You have provided an invalid ranking');
    if ($target ne 'tex') {
       $message.=', '.&mt('please refer to').' '.&Apache::loncommon::help_open_topic('Ranking_Problems','help on ranking problems');
    }
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'INVALID_FILETYPE') {
    $message = &mt('Submission won\'t be graded. The type of file submitted is not allowed.');
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'SIG_FAIL') {
    my ($used,$min,$max)=split(':',$awardmsg);
    my $word;
    if ($used < $min) { $word=&mt('more'); }
    if ($used > $max) { $word=&mt('fewer'); }
    $message = &mt("Submission not graded.  Use [_2] digits.",$used,$word);
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'UNIT_INVALID_INSTRUCTOR') {
    $message = &mt('Error in instructor specifed unit. This error has been reported to the instructor.', $awardmsg);
    if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units');} 
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'UNIT_INVALID_STUDENT') {
    $message = &mt('Unable to interpret units. Computer reads units as "[_1]".',&markup_unit($awardmsg,$target));
    if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units');} 
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'UNIT_FAIL' || $award eq 'UNIT_IRRECONCIBLE') {
    $message = &mt('Incompatible units. No conversion found between "[_1]" and the required units.',&markup_unit($awardmsg,$target));
    if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units');} 
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'UNIT_NOTNEEDED') {
    $message = &mt('Only a number required. Computer reads units of "[_1]".',&markup_unit($awardmsg,$target));
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'NO_UNIT') {
    $message = &mt("Units required").'.';
    if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units')};
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'COMMA_FAIL') {
    $message = &mt("Proper comma separation is required").'.';
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'BAD_FORMULA') {
    $message = &mt("Unable to understand formula");
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'INCORRECT') {
    $message = &mt("Incorrect").'.';
    $bgcolor=$possiblecolors{'charged_try'};
    $button=1;
       } elsif ($award eq 'SUBMITTED') {
    $message = &mt("Your submission has been recorded.");
    $bgcolor=$possiblecolors{'correct'};
    $button=1;
       } elsif ($award eq 'DRAFT') {
    $message = &mt("A draft copy has been saved.");
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'ASSIGNED_SCORE') {
    $message = &mt("A score has been assigned.");
    $bgcolor=$possiblecolors{'correct'};
    $button=0;
       } elsif ($award eq '') {
    if ($handgrade && $Apache::inputtags::status[-1] eq 'SHOW_ANSWER') {
       $message = &mt("Nothing submitted.");
       $bgcolor=$possiblecolors{'charged_try'};
    } else {
       $bgcolor=$possiblecolors{'not_charged_try'};
    }
    $button=1;
       } else {
    $message = &mt("Unknown message").": $award";
    $button=1;
       }
       my (undef,undef,$domain,$user)=&Apache::lonxml::whichuser();
       foreach my $resid(@Apache::inputtags::response){
           &Apache::lonnet::logthis("handback is ".$Apache::lonhomework::history{"resource.$part.$resid.handback"});
           if ($Apache::lonhomework::history{"resource.$part.$resid.handback"}) {
               $message.= '<br /><a href="/uploaded/'."$domain/$user".'/portfolio/'.$Apache::lonhomework::history{"resource.$part.$resid.handback"}.'">Returned File</a>';
           }
       }
   
       if (lc($Apache::lonhomework::problemstatus) eq 'no'  && 
    $Apache::inputtags::status[-1] ne 'SHOW_ANSWER') {
    $message = &mt("Answer Submitted: Your final submission will be graded after the due date.");
    $bgcolor=$possiblecolors{'correct'};
    $button=1;
       }
       if ($Apache::inputtags::status[-1] eq 'SHOW_ANSWER' && 
    !$added_computer_text && $target ne 'tex') {
    $message.= $computer;
    $added_computer_text=1;
       }
       return ($button,$bgcolor,$message,$previousmsg);
   }
   
   sub markup_unit {
       my ($unit,$target)=@_;
       if ($target eq 'tex') {
    return '\texttt{'.&Apache::lonxml::latex_special_symbols($unit).'}'; 
       } else {
    return "<tt>".$unit."</tt>";
       }
   }
   
   sub removealldata {
       my ($id)=@_;
       foreach my $key (keys(%Apache::lonhomework::results)) {
    if (($key =~ /^resource\.\Q$id\E\./) && ($key !~ /\.collaborators$/)) {
       &Apache::lonxml::debug("Removing $key");
       delete($Apache::lonhomework::results{$key});
    }
       }
   }
   
   sub hidealldata {
       my ($id)=@_;
       foreach my $key (keys(%Apache::lonhomework::results)) {
    if (($key =~ /^resource\.\Q$id\E\./) && ($key !~ /\.collaborators$/)) {
       &Apache::lonxml::debug("Hidding $key");
       my $newkey=$key;
       $newkey=~s/^(resource\.\Q$id\E\.[^\.]+\.)(.*)$/${1}hidden${2}/;
       $Apache::lonhomework::results{$newkey}=
    $Apache::lonhomework::results{$key};
       delete($Apache::lonhomework::results{$key});
    }
       }
 }  }
   
 sub setgradedata {  sub setgradedata {
   my ($award,$id) = @_;      my ($award,$msg,$id,$previously_used) = @_;
   if ( $award eq 'APPROX_ANS' || $award eq 'EXACT_ANS' ) {      if ($Apache::lonhomework::scantronmode && 
     $Apache::lonhomework::results{"resource.tries.$id"} =   &Apache::lonnet::validCODE($env{'form.CODE'})) {
       $Apache::lonhomework::history{"resource.tries.$id"} + 1;   $Apache::lonhomework::results{"resource.CODE"}=$env{'form.CODE'};
     $Apache::lonhomework::results{"resource.solved.$id"} =      } elsif ($Apache::lonhomework::scantronmode && 
       'correct_by_student';       $env{'form.CODE'} eq '' &&
     $Apache::lonhomework::results{"resource.awarded.$id"} = '1';       $Apache::lonhomework::history{"resource.CODE"} ne '') {
   } elsif ( $award eq 'INCORRECT' ) {   $Apache::lonhomework::results{"resource.CODE"}='';
     $Apache::lonhomework::results{"resource.tries.$id"} =      }
       $Apache::lonhomework::history{"resource.tries.$id"} + 1;  
     $Apache::lonhomework::results{"resource.solved.$id"} =      if (!$Apache::lonhomework::scantronmode &&
       'incorrect_attempted';   $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
   } else {   $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
     $Apache::lonhomework::results{"resource.solved.$id"} =   $Apache::lonhomework::results{"resource.$id.afterduedate"}=$award;
       'incorrect_attempted';   return '';
   }      } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} !~
   $Apache::lonhomework::results{"resource.award.$id"} = $award;        /^correct/ || $Apache::lonhomework::scantronmode ||
         lc($Apache::lonhomework::problemstatus) eq 'no') {
           # the student doesn't already have it correct,
    # or we are in a mode (scantron orno problem status) where a correct 
           # can become incorrect
    # handle assignment of tries and solved status
    my $solvemsg;
    if ($Apache::lonhomework::scantronmode) {
       $solvemsg='correct_by_scantron';
    } else {
       $solvemsg='correct_by_student';
    }
    if ($Apache::lonhomework::history{"resource.$id.afterduedate"}) {
       $Apache::lonhomework::results{"resource.$id.afterduedate"}='';
    }
    if ( $award eq 'ASSIGNED_SCORE') {
       $Apache::lonhomework::results{"resource.$id.tries"} =
    $Apache::lonhomework::history{"resource.$id.tries"} + 1;
       $Apache::lonhomework::results{"resource.$id.solved"} =
    $solvemsg;
       my $numawards=scalar(@Apache::inputtags::response);
       $Apache::lonhomework::results{"resource.$id.awarded"} = 0;
       foreach my $res (@Apache::inputtags::response) {
    $Apache::lonhomework::results{"resource.$id.awarded"}+=
       $Apache::lonhomework::results{"resource.$id.$res.awarded"};
       }
       if ($numawards > 0) {
    $Apache::lonhomework::results{"resource.$id.awarded"}/=
       $numawards;
       }
    } elsif ( $award eq 'APPROX_ANS' || $award eq 'EXACT_ANS' ) {
       $Apache::lonhomework::results{"resource.$id.tries"} =
    $Apache::lonhomework::history{"resource.$id.tries"} + 1;
       $Apache::lonhomework::results{"resource.$id.solved"} =
    $solvemsg;
       $Apache::lonhomework::results{"resource.$id.awarded"} = '1';
    } elsif ( $award eq 'INCORRECT' ) {
       $Apache::lonhomework::results{"resource.$id.tries"} =
    $Apache::lonhomework::history{"resource.$id.tries"} + 1;
       if (lc($Apache::lonhomework::problemstatus) eq 'no' ||
    $Apache::lonhomework::scantronmode) {
    $Apache::lonhomework::results{"resource.$id.awarded"} = 0;
       }
       $Apache::lonhomework::results{"resource.$id.solved"} =
    'incorrect_attempted';
    } elsif ( $award eq 'SUBMITTED' ) {
       $Apache::lonhomework::results{"resource.$id.tries"} =
    $Apache::lonhomework::history{"resource.$id.tries"} + 1;
       $Apache::lonhomework::results{"resource.$id.solved"} =
    'ungraded_attempted';
    } elsif ( $award eq 'DRAFT' ) {
       $Apache::lonhomework::results{"resource.$id.solved"} = '';
    } elsif ( $award eq 'NO_RESPONSE' ) {
       #no real response so delete any data that got stored
       &removealldata($id);
       return '';
    } else {
       $Apache::lonhomework::results{"resource.$id.solved"} =
    'incorrect_attempted';
       if (lc($Apache::lonhomework::problemstatus) eq 'no' ||
    $Apache::lonhomework::scantronmode) {
    $Apache::lonhomework::results{"resource.$id.tries"} =
       $Apache::lonhomework::history{"resource.$id.tries"} + 1;
    $Apache::lonhomework::results{"resource.$id.awarded"} = 0;
       }
    }
    if (defined($msg)) {
       $Apache::lonhomework::results{"resource.$id.awardmsg"} = $msg;
    }
    # did either of the overall awards chage? If so ignore the 
    # previous check
    if (($Apache::lonhomework::results{"resource.$id.awarded"} eq
        $Apache::lonhomework::history{"resource.$id.awarded"}) &&
       ($Apache::lonhomework::results{"resource.$id.solved"} eq
        $Apache::lonhomework::history{"resource.$id.solved"})) {
       # check if this was a previous submission if it was delete the
       # unneeded data and update the previously_used attribute
       if ( $previously_used eq 'PREVIOUSLY_USED') {
    if (lc($Apache::lonhomework::problemstatus) ne 'no') {
       delete($Apache::lonhomework::results{"resource.$id.tries"});
       $Apache::lonhomework::results{"resource.$id.previous"} = '1';
    }
       } elsif ( $previously_used eq 'PREVIOUSLY_LAST') {
    #delete all data as they student didn't do anything, but save
    #the list of collaborators.
    &removealldata($id);
    #and since they didn't do anything we were never here
    return '';
       } else {
    $Apache::lonhomework::results{"resource.$id.previous"} = '0';
       }
    }
       } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} =~
         /^correct/ ) {
    #delete all data as they student already has it correct
    &removealldata($id);
    #and since they didn't do anything we were never here
    return '';
       }
       $Apache::lonhomework::results{"resource.$id.award"} = $award;
       if ($award eq 'SUBMITTED') {
    &Apache::response::add_to_gradingqueue();
       }
 }  }
   
 sub grade {  sub grade {
   my ($target) = @_;      my ($target) = @_;
   my $id = $Apache::inputtags::part;      my $id = $Apache::inputtags::part;
   my $result='';      my $response='';
   my $response='';      if ( defined $env{'form.submitted'}) {
   if ( $target == 'web' ) {   my (@awards,@msgs);
     if ( defined $ENV{'form.submit'}) {   foreach $response (@Apache::inputtags::response) {
       my @awards = ();      &Apache::lonxml::debug("looking for response.$id.$response.awarddetail");
       &Apache::lonxml::debug("$#Apache::inputtags::responselist");      my $value=$Apache::lonhomework::results{"resource.$id.$response.awarddetail"};
       foreach $response (@Apache::inputtags::responselist) {      &Apache::lonxml::debug("keeping $value from $response for $id");
  &Apache::lonxml::debug("looking for response.awarddetail.$id.$response");      push (@awards,$value);
  my $value=$Apache::lonhomework::results{"resource.awarddetail.$id.$response"};      $value=$Apache::lonhomework::results{"resource.$id.$response.awardmsg"};
  if ( $value ne '' ) {      &Apache::lonxml::debug("got message $value from $response for $id");
   &Apache::lonxml::debug("keep ing $value from $response for $id");      push (@msgs,$value);
   push (@awards,$value);   }
  } else {   my ($finalaward,$msg) = &finalizeawards(\@awards,\@msgs);
   &Apache::lonxml::debug("skipping $value from $response for $id");   my $previously_used;
  }   if ( $#Apache::inputtags::previous eq $#awards ) {
       }      my $match=0;
       my $finalaward = &finalizeawards(@awards);      my @matches;
       &Apache::lonxml::debug("final award $finalaward");      foreach my $versionar (@Apache::inputtags::previous_version) {
       &setgradedata($finalaward,$id);   foreach my $version (@$versionar) {
       $matches[$version]++;
    }
       }
       foreach my $elem (@matches) {if ($elem eq ($#awards+1)) {$match=1;}}
       if ($match) {
    $previously_used = 'PREVIOUSLY_LAST';
    foreach my $value (@Apache::inputtags::previous) {
       if ($value eq 'PREVIOUSLY_USED' ) {
    $previously_used = $value;
    last;
       }
    }
       }
    }
    &Apache::lonxml::debug("final award $finalaward, $previously_used, message $msg");
    &setgradedata($finalaward,$msg,$id,$previously_used);
     }      }
   }      return '';
   return $result;  
 }  }
   
 sub gradestatus {  sub gradestatus {
   my ($id) = @_;      my ($id,$target) = @_;
   my $showbutton = 1;      my $showbutton = 1;
   my $message = '';      my $bgcolor = '';
   my $award = $Apache::lonhomework::history{"resource.award.$id"};      my $message = '';
   &Apache::lonxml::debug("Found Award |$award|");      my $latemessage = '';
   if ( $award ne '' ) {      my $trystr='';
     &Apache::lonxml::debug('Getting message');      my $button='';
     ($showbutton,$message) = &decideoutput($award);      my $previousmsg='';
   }  
   my $button='';      my $status = $Apache::inputtags::status['-1'];
   my $tries = $Apache::lonhomework::history{"resource.tries.$id"};      &Apache::lonxml::debug("gradestatus has :$status:");
   my $maxtries = $Apache::lonhomework::history{"resource.maxtries.$id"};      if ( $status ne 'CLOSED' 
   if ( $tries eq '' ) { $tries = '0'; }   && $status ne 'UNAVAILABLE' 
   if ( $maxtries eq '' ) { $maxtries = '2'; }    && $status ne 'INVALID_ACCESS' 
   my $trystr='';   && $status ne 'NEEDS_CHECKIN' 
   if ( $showbutton ) {   && $status ne 'NOT_IN_A_SLOT') {  
     $trystr = "<br></br>Tries $tries/$maxtries";   my $award = $Apache::lonhomework::history{"resource.$id.award"};
   }   my $awarded = $Apache::lonhomework::history{"resource.$id.awarded"};
   if ( $tries >= $maxtries ) { $showbutton = 0; }   my $solved = $Apache::lonhomework::history{"resource.$id.solved"};
   if ( $showbutton ) {    my $previous = $Apache::lonhomework::history{"resource.$id.previous"};
     $button = '<input type="submit" name="submit" value="Submit All Answers"><br></br>';   my $awardmsg = $Apache::lonhomework::history{"resource.$id.awardmsg"};
   }   &Apache::lonxml::debug("Found Award |$award|$solved|$awardmsg");
   return $button.$message.$trystr;   if ( $award ne '' || $solved ne '' || $status eq 'SHOW_ANSWER') {
       &Apache::lonxml::debug('Getting message');
       ($showbutton,$bgcolor,$message,$previousmsg) =
    &decideoutput($award,$awarded,$awardmsg,$solved,$previous,
         $target);
       if ($target eq 'tex') {
    $message='\vskip 2 mm '.$message.' ';
       } else {
    $message="<td bgcolor=\"$bgcolor\">$message</td>";
    if ($previousmsg) {
       $previousmsg="<td bgcolor=\"#aaaaff\">$previousmsg</td>";
    }
       }
    }
    my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
    my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
    &Apache::lonxml::debug("got maxtries of :$maxtries:");
    #if tries are set to negative turn off the Tries/Button and messages
    if (defined($maxtries) && $maxtries < 0) { return ''; }
    if ( $tries eq '' ) { $tries = '0'; }
    if ( $maxtries eq '' ) { $maxtries = '2'; } 
    if ( $maxtries eq 'con_lost' ) { $maxtries = '0'; } 
    my $tries_text=&mt('Tries');
    if ( $Apache::lonhomework::type eq 'survey' ||
        $Apache::lonhomework::parsing_a_task) {
       $tries_text=&mt('Submissions');
    }
    if ( $showbutton ) {
       if ($target eq 'tex') {
    if ($env{'request.state'} ne "construct" && $Apache::lonhomework::type ne 'exam' && $env{'form.suppress_tries'} ne 'yes') {
       $trystr = ' {\vskip 1 mm \small \textit{'.$tries_text.'} '.$tries.'/'.$maxtries.'} \vskip 2 mm ';
    } else {
       $trystr = '\vskip 0 mm ';
    }
       } else {
    $trystr = "<td><nobr>".$tries_text." $tries";
    if ($Apache::lonhomework::parsing_a_task) {
    } elsif($env{'request.state'} ne 'construct') {
       $trystr.="/$maxtries";
    } else {
       if (defined($Apache::inputtags::params{'maxtries'})) {
    $trystr.="/".$Apache::inputtags::params{'maxtries'};
       }
    }
    $trystr.="</nobr></td>";
       }
    }
    if ( $status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') {$showbutton = 0;}
    if ( $showbutton ) { 
       if ($target ne 'tex') {
    $button = '<input type="submit" name="submit_'.$id.'" value="'.&mt('Submit Answer').'" />';
       }
    }
    if ($Apache::lonhomework::history{"resource.$id.afterduedate"}) {
       #last submissions was after due date
       $latemessage=&mt(' The last submission was after the Due Date ');;
       if ($target eq 'web') {
    $latemessage='<td bgcolor="#ffaaaa">'.$latemessage.'</td>';
       }
    }
       }
       my $output= $previousmsg.$latemessage.$message.$trystr;
       if ($output =~ /^\s*$/) {
    return $button;
       } else {
    if ($target eq 'tex') {
       return $button.' \vskip 0 mm '.$output.' ';
    } else {
       return '<table><tr><td>'.$button.'</td>'.$output.'</tr></table>';
    }
       }
 }  }
 1;  1;
 __END__  __END__
Removed from v.1.13  
changed lines
  Added in v.1.195

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