loncom/homework/inputtags.pm - diff

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Diff for /loncom/homework/inputtags.pm between versions 1.190 and 1.355

-version 1.190, 2006/03/09 01:11:12
+version 1.355, 2021/09/07 20:37:33
  Line 25
  #
  # http://www.lon-capa.org/
+ =pod
+ =head1 NAME
+ Apache::inputtags
+ =head1 SYNOPSIS
+ This is part of the LearningOnline Network with CAPA project
+ described at http://www.lon-capa.org.
+ =head1 NOTABLE SUBROUTINES
+ =over
+ =item
+ =back
+ =cut
  package Apache::inputtags;
  use HTML::Entities();
  use strict;
  use Apache::loncommon;
+ use Apache::lonhtmlcommon;
  use Apache::lonlocal;
  use Apache::lonnet;
+ use LONCAPA;
  BEGIN {
-     &Apache::lonxml::register('Apache::inputtags',('hiddenline','textfield','textline'));
+     &Apache::lonxml::register('Apache::inputtags',('hiddensubmission','hiddenline','textfield','textline'));
  }
- #   Initializes a set of global variables used during the parse of the problem.
+ =pod
- #
- #  @Apache::inputtags::input        - List of current input ids.
+ =item initialize_inputtags()
- #  @Apache::inputtags::inputlist    - List of all input ids seen this problem.
- #  @Apache::inputtags::response     - List of all current resopnse ids.
+ Initializes a set of global variables used during the parse of the problem.
- #  @Apache::inputtags::responselist - List of all response ids seen this
- #                                       problem.
+ @Apache::inputtags::input        - List of current input ids.
- #  @Apache::inputtags::hint         - List of all hint ids.
+ @Apache::inputtags::inputlist    - List of all input ids seen this problem.
- #  @Apache::inputtags::hintlist     - List of all hint ids seen this problem.
+ @Apache::inputtags::response     - List of all current resopnse ids.
- #  @Apache::inputtags::previous     - List describing if specific responseds
+ @Apache::inputtags::responselist - List of all response ids seen this
- #                                       have been used
+                                      problem.
- #  @Apache::inputtags::previous_version - Submission responses were used in.
+ @Apache::inputtags::hint         - List of all hint ids.
- #  $Apache::inputtags::part         - Current part id (valid only in
+ @Apache::inputtags::hintlist     - List of all hint ids seen this problem.
- #                                       <problem>)
+ @Apache::inputtags::previous     - List describing if specific responseds
- #                                     0 if not in a part.
+                                      have been used
- #  @Apache::inputtags::partlist     - List of part ids seen in the current
+ @Apache::inputtags::previous_version - Submission responses were used in.
- #                                       <problem>
+ $Apache::inputtags::part         - Current part id (valid only in
- #  @Apache::inputtags::status       - List of problem  statuses. First
+                                      <problem>)
- #                                     element is the status of the <problem>
+if not in a part.
- #                                     the remainder are for individual <part>s.
+ @Apache::inputtags::partlist     - List of part ids seen in the current
- #  %Apache::inputtags::params       - Hash of defined parameters for the
+                                      <problem>
- #                                     current response.
+ @Apache::inputtags::status       - List of problem  statuses. First
- #  @Apache::inputtags::import       - List of all ids for <import> thes get
+                                    element is the status of the <problem>
- #                                     join()ed and prepended.
+                                    the remainder are for individual <part>s.
- #  @Apache::inputtags::importlist   - List of all import ids seen.
+ %Apache::inputtags::params       - Hash of defined parameters for the
- #  $Apache::inputtags::response_with_no_part
+                                    current response.
- #                                   - Flag set true if we have seen a response
+ @Apache::inputtags::import       - List of all ids for <import> thes get
- #                                     that is not inside a <part>
+                                    join()ed and prepended.
- #  %Apache::inputtags::answertxt    - <*response> tags store correct
+ @Apache::inputtags::importlist   - List of all import ids seen.
- #                                     answer strings for display by <textline/>
+ $Apache::inputtags::response_with_no_part
- #                                     in this hash.
+                                  - 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.
+ %Apache::inputtags::submission_display
+                                  - <*response> tags store improved display
+                                    of submission strings for display by part
+                                    end.
+ =cut
  sub initialize_inputtags {
      @Apache::inputtags::input=();
- Line 85  sub initialize_inputtags {
+ Line 122  sub initialize_inputtags {
      @Apache::inputtags::importlist=();
      $Apache::inputtags::response_with_no_part=0;
      %Apache::inputtags::answertxt=();
+     %Apache::inputtags::submission_display=();
+ }
+ #
+ #  provides the onblur binding for spellchecking.  This could be an
+ #  empty string if spellchecking was not enabled.
+ #  Jquery selector binding is done rather than setting an onblur
+ #  attribute because we'll need to set the element's spellcheck language
+ #  option dynamically so we need $(this) to be defined.
+ #
+ # @param id   - The element id to bind.
+ # @param lang - Language in which spellchecking is desired.
+ #               if undef, nothing is generated.
+ # @return string - onblur specification to do the requested spellchecking.
+ #
+ sub spellcheck_onblur {
+     my ($id, $lang) = @_;
+     my $result = '';
+     if ($lang) {
+ 	$result = <<JAVASCRIPT;
+ <script type="text/javascript">
+ \$('\#$id').blur(function() {
+     doSpellcheck('\#$id', '$lang');
+  });
+ </script>
+ JAVASCRIPT
+     }
+     return $result;
  }
  sub check_for_duplicate_ids {
- Line 108  sub check_for_duplicate_ids {
+ Line 177  sub check_for_duplicate_ids {
  sub start_input {
      my ($parstack,$safeeval)=@_;
-     my $id = &Apache::lonxml::get_param('id',$parstack,$safeeval);
+     my $id = &Apache::lonxml::get_id($parstack,$safeeval);
-     if ($id eq '') { $id = $Apache::lonxml::curdepth; }
      push (@Apache::inputtags::input,$id);
      push (@Apache::inputtags::inputlist,$id);
      return $id;
- Line 137  sub start_textfield {
+ Line 205  sub start_textfield {
      my $resid=$Apache::inputtags::response[-1];
      if ($target eq 'web') {
  	$Apache::lonxml::evaluate--;
+ 	my $partid=$Apache::inputtags::part;
+         my ($oldresponse,$newvariation);
+         if ((($Apache::lonhomework::history{"resource.$partid.type"} eq 'randomizetry') ||
+              ($Apache::lonhomework::type eq 'randomizetry')) &&
+              ($Apache::inputtags::status[-1] eq 'CAN_ANSWER')) {
+             if ($env{'form.'.$partid.'.rndseed'} ne
+                 $Apache::lonhomework::history{"resource.$partid.rndseed"}) {
+                 $newvariation = 1;
+             }
+         }
+         unless ($newvariation) {
+             if ((($env{'form.grade_username'} eq '') && ($env{'form.grade_domain'} eq '')) ||
+                 (($env{'form.grade_username'} eq $env{'user.name'}) &&
+                  ($env{'form.grade_domain'} eq $env{'user.domain'}))) {
+                 $oldresponse = $Apache::lonhomework::history{"resource.$partid.$resid.submission"};
+             } elsif (($Apache::lonhomework::history{"resource.$partid.type"} eq 'anonsurvey') ||
+                     ($Apache::lonhomework::history{"resource.$partid.type"} eq 'anonsurveycred')) {
+                 $oldresponse = '* '.&mt('(only shown to submitter)').' *';
+             } else {
+                 $oldresponse = $Apache::lonhomework::history{"resource.$partid.$resid.submission"};
+             }
+         }
  	if ($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='';
+ 	    my $tagident = 'HWVAL_' . $resid;
+             my $itemid = 'HWVAL_'.$partid.'_'.$resid;
  	    if ($addchars) {
- 		$result.=&addchars('HWVAL_'.$resid,$addchars);
+ 		$result.=&addchars($tagident, $addchars);
  	    }
- 	    push @Apache::lonxml::htmlareafields,'HWVAL_'.$resid;
+             my $textareaclass;
- 	    $result.= '<textarea wrap="hard" name="HWVAL_'.$resid.'" id="HWVAL_'.$resid.'" '.
+             unless (&Apache::londefdef::is_inside_of($tagstack,
- 		"rows=\"$rows\" cols=\"$cols\">".$oldresponse;
+                                                     'externalresponse')) {
+                 $textareaclass = 'class="LC_richDetectHtml spellchecked"';
+             }
+ 	    $result.= '<textarea wrap="hard" name="'.$tagident.'" id="'.$itemid.'" ' .
+ 		      'rows="'.$rows.'" cols="'.$cols.'" '.$textareaclass
+ 		      .'>'.
+                       &HTML::Entities::encode($oldresponse,'<>&"');
  	    if ($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
+ 	    #show past answer in the essayresponse case
- 	    #$result='<table border="1"><tr><td><i>'.$oldresponse.'</i></td></tr></table>';
+ 	    if ($oldresponse =~ /\S/
- 	    $result='';
+ 		&& &Apache::londefdef::is_inside_of($tagstack,
+ 						    'essayresponse') ) {
+ 		$result='<table class="LC_pastsubmission"><tr><td>'.
+ 		    &HTML::Entities::encode($oldresponse,'"<>&').
+                     '</td></tr></table>';
+ 	    }
  	    #get rid of any startup text
  	    &Apache::lonxml::get_all_text("/textfield",$parser,$style);
  	}
- Line 180  sub start_textfield {
+ Line 281  sub start_textfield {
  	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);
+         my $spell_langs = &spelling_languages();
+ 	$result .= &Apache::edit::select_arg('Spellcheck for:', 'spellcheck',
+ 					     $spell_langs, $token);
      } elsif ($target eq 'modified') {
  	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
  						     $safeeval,'rows','cols',
- 						     'addchars');
+ 						     'addchars', 'spellcheck');
  	if ($constructtag) {
  	    $result = &Apache::edit::rebuild_tag($token);
  	} else {
- Line 198  sub start_textfield {
+ Line 302  sub start_textfield {
  	    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;
+             if ($env{'form.pdfFormFields'} eq 'yes') {
- 	    $result = '\vskip 1 mm \fbox{\fbox{\parbox{'.$TeXwidth.'\textwidth-5mm}{';
+                 my $fieldname = $env{'request.symb'}.
- 	    for (my $i=0;$i<int $number_of_lines*2;$i++) {$result.='\strut \\\\ ';}
+                                 '&part_'. $Apache::inputtags::part.
- 	    $result.='}}}\vskip 2 mm ';
+                                 '&textresponse'.
+                                 '&HWVAL_' . $Apache::inputtags::response['-1'];
+                 $result.='\TextField[name='.$fieldname.',multiline=true,height=6\baselineskip,width=270,borderwidth=0,backgroundcolor={.85 .85 .85}]\\';
+             } 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 $result;
- Line 211  sub end_textfield {
+ Line 323  sub end_textfield {
      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
      my $result;
      if ($target eq 'web') {
+ 	my $spellcheck = &Apache::lonxml::get_param('spellcheck', $parstack, $safeeval);
  	$Apache::lonxml::evaluate++;
  	if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
- 	    return "</textarea>";
+             my $partid=$Apache::inputtags::part;
+ 	    my $resid = $Apache::inputtags::response[-1];
+ 	    my $itemid = 'HWVAL_' . $partid . '_' . $resid;
+ 	    my $result =  "</textarea>";
+ 	    $result .= &spellcheck_onblur($itemid, $spellcheck);
+ 	    return $result;
  	}
      } elsif ($target eq 'edit') {
  	$result=&Apache::edit::end_table();
- Line 276  sub needs_exam_box {
+ Line 394  sub needs_exam_box {
  sub start_textline {
      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
      my $result = "";
+     my $input_id = &start_input($parstack,$safeeval);
+     # The spellcheck attribute
+     # 1. enables spellchecking.
+     # 2. Provides the language code in which the spellchecking will be performed.
+     my $spellcheck = &Apache::lonxml::get_param('spellcheck', $parstack, $safeeval);
      if ($target eq 'web') {
  	$Apache::lonxml::evaluate--;
  	my $partid=$Apache::inputtags::part;
  	my $id=$Apache::inputtags::response[-1];
- 	if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
+ 	if (!&Apache::response::show_answer()) {
  	    my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);
  	    my $maxlength;
  	    if ($size eq '') { $size=20; } else {
- 		if ($size < 20) { $maxlength=$size; }
+ 		if ($size < 20) {
+ 		    $maxlength = ' maxlength="'.$size.'"';
+ 		}
  	    }
- 	    my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"},'<>&"');
+             my ($oldresponse,$newvariation);
+             if ((($Apache::lonhomework::history{"resource.$partid.type"} eq 'randomizetry') ||
+                  ($Apache::lonhomework::type eq 'randomizetry')) &&
+                  ($Apache::inputtags::status[-1] eq 'CAN_ANSWER')) {
+                 if ($env{'form.'.$partid.'.rndseed'} ne
+                     $Apache::lonhomework::history{"resource.$partid.rndseed"}) {
+                     $newvariation = 1;
+                 }
+             }
+             unless ($newvariation) {
+                 if ((($env{'form.grade_username'} eq '') && ($env{'form.grade_domain'} eq '')) ||
+                     (($env{'form.grade_username'} eq $env{'user.name'}) &&
+                      ($env{'form.grade_domain'} eq $env{'user.domain'}))) {
+                     $oldresponse = $Apache::lonhomework::history{"resource.$partid.$id.submission"};
+                 } elsif (($Apache::lonhomework::history{"resource.$partid.type"} eq 'anonsurvey') ||
+                         ($Apache::lonhomework::history{"resource.$partid.type"} eq 'anonsurveycred') ||
+                         ($Apache::lonhomework::type eq 'anonsurvey') ||
+                         ($Apache::lonhomework::type eq 'anonsurveycred')) {
+                         $oldresponse = '* '.&mt('(only shown to submitter)').' *';
+                 } else {
+                     $oldresponse = $Apache::lonhomework::history{"resource.$partid.$id.submission"};
+                 }
+ 	        &Apache::lonxml::debug("oldresponse $oldresponse is ".ref($oldresponse));
+ 	        if (ref($oldresponse) eq 'ARRAY') {
+ 		    $oldresponse = $oldresponse->[$#Apache::inputtags::inputlist];
+ 	        }
+ 	        $oldresponse = &HTML::Entities::encode($oldresponse,'<>&"');
+                 $oldresponse =~ s/^\s+//;
+                 $oldresponse =~ s/\s+$//;
+                 $oldresponse =~ s/\s+/ /g;
+             }
  	    if ($Apache::lonhomework::type ne 'exam') {
  		my $addchars=&Apache::lonxml::get_param('addchars',$parstack,$safeeval);
  		$result='';
- Line 295  sub start_textline {
+ Line 452  sub start_textline {
  		}
  		my $readonly=&Apache::lonxml::get_param('readonly',$parstack,
  							$safeeval);
- 		if (lc($readonly) eq 'yes') {
+ 		if (lc($readonly) eq 'yes'
+ 		    || $Apache::inputtags::status[-1] eq 'CANNOT_ANSWER') {
  		    $readonly=' readonly="readonly" ';
  		} else {
  		    $readonly='';
  		}
- 		$result.= '<input type="text" '.$readonly.' name="HWVAL_'.$id.'" value="'.
+ 		my $name = 'HWVAL_'.$id;
- 		    $oldresponse.'" size="'.$size.'" maxlength="'.$maxlength.'" />';
+                 my $itemid = 'HWVAL_'.$partid.'_'.$id;
+                 # NOTE: the input id should match the one given by defaut_homework input_id().
+                 my $input_tag_id = $itemid.'_'.$input_id;
+ 		if ($Apache::inputtags::status[-1] eq 'CANNOT_ANSWER') {
+ 		    $name = "none";
+ 		}
+ 		$result.= '<input onkeydown="javascript:setSubmittedPart(\''.$partid.'\');"'
+ 		     . ' onfocus="javascript:disableAutoComplete(\''.$input_tag_id.'\');"'
+ 		     . ' type="text" '.$readonly.' name="'. $name . '"'
+ 		     . ' id="' . $input_tag_id . '"'
+ 		     . ' value="'.  $oldresponse.'"'
+ 		     . ' class="LC_textline spellchecked"  size="'.$size.'"'.$maxlength.' />';
+ 		$result .= &spellcheck_onblur($itemid, $spellcheck);
+                 if (($Apache::inputtags::status['-1'] eq 'CAN_ANSWER') &&
+                     (($tagstack->[-2] eq 'formularesponse') || ($tagstack->[-2] eq 'mathresponse')) &&
+                     (&Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.turnoffeditor') ne 'yes')) {
+                     $result.=&edit_mathresponse_button($input_tag_id);
+                 }
  	    }
  	    if ($Apache::lonhomework::type eq 'exam'
  		&& &needs_exam_box($tagstack)) {
- Line 309  sub start_textline {
+ Line 485  sub start_textline {
  	    }
  	} else {
  	    #right or wrong don't show what was last typed in.
- 	    $result='<b>'.$Apache::inputtags::answertxt{$id}.'</b>';
+ 	    my $count = scalar(@Apache::inputtags::inputlist)-1;
+ 	    $result='<b>'.$Apache::inputtags::answertxt{$id}[$count].'</b>';
  	    #$result='';
  	}
      } elsif ($target eq 'edit') {
- Line 319  sub start_textline {
+ Line 496  sub start_textline {
  				    'addchars',$token,10);
          $result.=&Apache::edit::select_arg('Readonly:','readonly',
  					   ['no','yes'],$token);
+         my $spell_langs = &spelling_languages();
+ 	$result.=&Apache::edit::select_arg('Spellcheck for:', 'spellcheck',
+ 					   $spell_langs, $token);
  	$result.=&Apache::edit::end_row();
  	$result.=&Apache::edit::end_table();
      } elsif ($target eq 'modified') {
  	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
  						     $safeeval,'size',
- 						     'addchars','readonly');
+ 						     'addchars','readonly', 'spellcheck');
  	if ($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}';
+ 	if ($env{'form.pdfFormFields'} eq 'yes'
+             && $Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
+             my $fieldname = $env{'request.symb'}.
+                                  '&part_'. $Apache::inputtags::part.
+                                  '&textresponse'.
+                                  '&HWVAL_' . $Apache::inputtags::response['-1'];
+             $result='\textField{'.$fieldname.'}{'.$size.'}{12 bp}';
+         } else {
+             $result='\framebox['.$size.'][s]{\tiny\strut}';
+         }
      } elsif ($target eq 'tex'
  	     && $Apache::lonhomework::type eq 'exam'
  	     && &needs_exam_box($tagstack)) {
- Line 344  sub end_textline {
+ Line 532  sub end_textline {
      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
      if    ($target eq 'web') { $Apache::lonxml::evaluate++; }
      elsif ($target eq 'edit') { return ('','no'); }
+     &end_input();
      return "";
  }
  sub start_hiddenline {
      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
      my $result = "";
+     my $input_id = &start_input($parstack,$safeeval);
      if ($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"},'<>&"');
+ 	    my $oldresponse = $Apache::lonhomework::history{"resource.$partid.$id.submission"};
+ 	    if (ref($oldresponse) eq 'ARRAY') {
+ 		$oldresponse = $oldresponse->[$#Apache::inputtags::inputlist];
+ 	    }
+ 	    $oldresponse = &HTML::Entities::encode($oldresponse,'<>&"');
  	    if ($Apache::lonhomework::type ne 'exam') {
  		$result= '<input type="hidden" name="HWVAL_'.$id.'" value="'.
  		    $oldresponse.'" />';
- Line 378  sub end_hiddenline {
+ Line 573  sub end_hiddenline {
      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
      if    ($target eq 'web') { $Apache::lonxml::evaluate++; }
      elsif ($target eq 'edit') { return ('','no'); }
+     &end_input();
      return "";
  }
- # $part -> partid
- # $id -> responseid
+ sub start_hiddensubmission {
- # $uploadefiletypes -> comma seperated list of extensions allowed or * for any
+     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
- # $which -> 'uploadedonly'  -> only newly uploaded files
+     my $result = "";
- #           'portfolioonly' -> only allow files from portfolio
+     my $input_id = &start_input($parstack,$safeeval);
- #           'both' -> allow files from either location
+     if ($target eq 'web') {
- # $extratext -> additional text to go between the link and the input box
+         $Apache::lonxml::evaluate--;
- # returns a table row <tr>
+         if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
+             my $partid=$Apache::inputtags::part;
+             my $id=$Apache::inputtags::response[-1];
+             if ($Apache::lonhomework::type ne 'exam') {
+                 my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
+                 $value = &HTML::Entities::encode($value,'<>&"');
+                 $result= '<input type="hidden" name="HWVAL_'.$id.'" value="'.$value.'" />';
+             }
+         }
+     } elsif ($target eq 'edit') {
+         $result=&Apache::edit::tag_start($target,$token);
+         $result.=&Apache::edit::text_arg('Value:','value',$token,'15');
+         $result.=&Apache::edit::end_row();
+         $result.=&Apache::edit::end_table();
+     } elsif ($target eq 'modified') {
+         my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+                                                      $safeeval,'value');
+         if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
+     }
+     if ( ($target eq 'web' || $target eq 'tex')
+          && $Apache::lonhomework::type eq 'exam'
+          && &needs_exam_box($tagstack)) {
+         $result.=&exam_box($target);
+     }
+     return $result;
+ }
+ sub end_hiddensubmission {
+     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
+     if    ($target eq 'web') { $Apache::lonxml::evaluate++; }
+     elsif ($target eq 'edit') { return ('','no'); }
+     &end_input();
+     return "";
+ }
+ =pod
+ =item file_selector()
+ $part -> partid
+ $id -> responseid
+ $uploadefiletypes -> comma seperated list of extensions allowed or * for any
+ $which -> 'uploadonly'  -> 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
+ $maxfilesize -> maximum cumulative filesize for submitted files (in MB).
+ returns a table row <tr>
+ =cut
  sub file_selector {
-     my ($part,$id,$uploadedfiletypes,$which,$extratext)=@_;
+     my ($part,$id,$uploadedfiletypes,$which,$extratext,$maxfilesize)=@_;
      if (!$uploadedfiletypes) { return ''; }
      my $jspart=$part;
      $jspart=~s/\./_/g;
      my $result;
+     my $current_files_display = &current_file_submissions($part,$id);
-     $result.='<tr><td>';
+     my $addfiles;
+     if ($current_files_display) {
+         $result .= &Apache::lonhtmlcommon::row_title(&mt('Files currently selected for submission')).
+                    $current_files_display.
+                    &Apache::lonhtmlcommon::row_closure();
+         $addfiles = &mt('Submit other file(s)');
+     } else {
+         $addfiles = &mt('Choose file(s) to submit');
+     }
+     $result .= &Apache::lonhtmlcommon::row_title($addfiles);
+     my $constraints;
      if ($uploadedfiletypes ne '*') {
- 	$result.=
+ 	$constraints =
- 	    &mt('Allowed filetypes: <b>[_1]</b>',$uploadedfiletypes).'<br />';
+ 	    &mt('Allowed filetypes: [_1]','<b>'.$uploadedfiletypes.'</b>').'<br />';
      }
-     if ($which eq 'uploadonly' || $which eq 'both') {
+     if ($maxfilesize) {
- 	$result.=&mt('Submit a file: (only one file can be uploaded)').
+         $constraints .= &mt('Combined size of all files not to exceed: [_1] MB.',
- 	    ' <br /><input type="file" size="50" name="HWFILE'.
+                         '<b>'.$maxfilesize.'</b>').'<br />';
- 	    $jspart.'_'.$id.'" /><br />';
+     }
- 	my $uploadedfile= &HTML::Entities::encode($Apache::lonhomework::history{"resource.$part.$id.uploadedfile"},'<>&"');
+     if ($constraints) {
+         $result .= $constraints.'<br />';
- 	if ($uploadedfile) {
+     }
- 	    my $url=$Apache::lonhomework::history{"resource.$part.$id.uploadedurl"};
+     if ($which eq 'uploadonly' || $which eq 'both') {
- 	    &Apache::lonxml::extlink($url);
+         my $free_space = $maxfilesize * 1048576;
- 	    &Apache::lonnet::allowuploaded('/adm/essayresponse',$url);
+         $result .= &mt('Submit a file: (only one file per submission)').
- 	    my $icon=&Apache::loncommon::icon($url);
+             ' <br /><input type="file" size="50" name="HWFILE'.$jspart.'_'.$id.
- 	    my $curfile='<a href="'.$url.'"><img src="'.$icon.
+             '" id="HWFILE'.$jspart.'_'.$id.'" class="LC_flUpload LC_hwkfile" />'.
- 		'" border="0" />'.$uploadedfile.'</a>';
+             '<input type="hidden" id="LC_free_space_'.$jspart.'_'.$id.'"'.
- 	    $result.=&mt('Currently submitted: <tt>[_1]</tt>',$curfile);
+             ' value="'.$free_space.'" /><br />';
- 	} else {
- 	    #$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"))'."'".'>'.
+         my $symb = $env{'request.symb'};
- 	    &mt('Select Portfolio Files').'</a><br />'.
+         (undef,undef,my $res)=&Apache::lonnet::decode_symb($symb);
+         my $showsymb;
+         # If resource is a .task and URL is unencrypted, include symb in query string
+         # for url opened in portfolio file selection window. Can be used to override
+         # blocking of portfolio access resulting from an exam event in a different course.
+         if ($res =~ /\.task$/i) {
+             my $encsymb = &Apache::lonenc::check_encrypt($symb);
+             if ($symb eq $encsymb) {
+                 $showsymb = $symb;
+             }
+         }
+ 	$result.=$extratext.'<a href='."'".'javascript:void(window.open("/adm/portfolio?mode=selectfile&amp;fieldname='.$env{'form.request.prefix'}.'HWPORT'.$jspart.'_'.$id.'&amp;symb='.$showsymb.'","cat","height=600,width=800,scrollbars=1,resizable=1,menubar=2,location=1"))'."'".'>'.
+ 	    &mt('Select Portfolio Files: (one or more files per submission)').'</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 $file (split(',',&Apache::lonnet::unescape($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)) {
- 		    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>';
+     $result.=&Apache::lonhtmlcommon::row_closure(1);
      return $result;
  }
- sub checkstatus {
+ sub current_file_submissions {
-     my ($value,$awardref,$msgref)=@_;
+     my ($part,$id) = @_;
-     for (my $i=0;$i<=$#$awardref;$i++) {
+     my $jspart=$part;
- 	if ($$awardref[$i] eq $value) {
+     $jspart=~s/\./_/g;
- 	    return ($$awardref[$i],$$msgref[$i]);
+     my $uploadedfile=$Apache::lonhomework::history{"resource.$part.$id.uploadedfile"};
- 	}
+     my $portfiles=$Apache::lonhomework::history{"resource.$part.$id.portfiles"};
+     return if (($uploadedfile eq '') && ($portfiles !~/[^\s]/));
+     my @unversioned;
+     foreach my $file (split(/\s*,\s*/,&unescape($portfiles))) {
+         my ($path,$name) = ($file =~ m{^(.*/)([^/]+)$});
+         my ($origname,$version,$ext) = &Apache::lonnet::file_name_version_ext($name);
+         unless ($version) {
+             push(@unversioned,$file);
+         }
+     }
+     return if (!@unversioned);
+     my $header = &portpath_popup_js().
+                  &Apache::loncommon::start_data_table().
+                  &Apache::loncommon::start_data_table_header_row();
+     if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
+         $header .= '<th>'.&mt('Delete?').'</th>';
+     }
+     $header .=   '<th>'.&mt('File').'</th>'.
+                  '<th>'.&mt('Size (MB)').'</th>'.
+                  '<th>'.&mt('Last Modified').'</th>'.
+                  &Apache::loncommon::end_data_table_header_row();
+     my ($symb,$crsid,$udom,$uname)=&Apache::lonnet::whichuser();
+     my ($cdom,$cnum) = ($crsid =~ /^($LONCAPA::match_domain)_($LONCAPA::match_courseid)$/);
+     my ($result,$header_shown,%okfiles,%rows,%legacy,@bad_file_list);
+     if ($uploadedfile) {
+         my $url=$Apache::lonhomework::history{"resource.$part.$id.uploadedurl"};
+         my $link = &HTML::Entities::encode($url,'<>&"');
+         my ($path,$name) = ($url =~ m{^(/uploaded/\Q$udom\E/\Q$uname\E/essayresponse.*/)([^/]+)$});
+         my ($status,$hashref,$error) =
+             &current_file_info($url,$link,$name,$path);
+         if ($status eq 'ok') {
+             push(@{$okfiles{$name}},$url);
+             $rows{$url} = $hashref;
+             $legacy{$url} = 1;
+             &Apache::lonxml::extlink($url);
+             &Apache::lonnet::allowuploaded('/adm/essayresponse',$url);
+         } else {
+             push(@bad_file_list,$error);
+         }
+     }
+     if (@unversioned > 0) {
+         my $prefix = "/uploaded/$udom/$uname/portfolio";
+         foreach my $file (@unversioned) {
+             my ($path,$name) = ($file =~ m{^(.*/)([^/]+)$});
+             my $url = $prefix.$path.$name;
+             my $uploadedfile = &HTML::Entities::encode($url,'<>&"');
+             my ($status,$hashref,$error) =
+                 &current_file_info($url,$uploadedfile,$name,$path);
+             if ($status eq 'ok') {
+                 push(@{$okfiles{$name}},$url);
+                 $rows{$url} = $hashref;
+             } else {
+                 push(@bad_file_list,$error);
+             }
+         }
+     }
+     my $num = 0;
+     foreach my $name (sort(keys(%okfiles))) {
+         if (ref($okfiles{$name}) eq 'ARRAY') {
+             foreach my $url (@{$okfiles{$name}}) {
+                 if (ref($rows{$url}) eq 'HASH') {
+                     my $link = $rows{$url}{link};
+                     my $portfile = $rows{$url}{path}.$rows{$url}{name};
+                     $portfile = &HTML::Entities::encode($portfile,'<>&"');
+                     if ($link) {
+                         my $icon=&Apache::loncommon::icon($url);
+                         unless ($header_shown) {
+                             $result .= $header;
+                             $header_shown = 1;
+                         }
+                         $result.=
+                             &Apache::loncommon::start_data_table_row()."\n";
+                         if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
+                             $result .=
+                                  '<td valign="bottom"><input type="checkbox" name="HWFILE'.$jspart.'_'.$id.'_delete"'.
+                                  ' value="'.$portfile.'" id="HWFILE'.$jspart.'_'.$id.'_'.$num.'_delete" /></td>'."\n";
+                             $num ++;
+                         }
+                         my $pathid = 'HWFILE'.$jspart.'_'.$id.'_'.$num.'_path';
+                         my $pathidtext = $pathid.'text';
+                         my ($showname,$showpath);
+                         if ($legacy{$url}) {
+                             $showname = $name.' '.&mt('not in portfolio');
+                         } else {
+                             $showname = $name;
+                             $showpath = '<br />'.
+                                         '<span id="'.$pathidtext.'" class="LC_cusr_subheading">'.
+                                         '<a href="javascript:showPortPath('."'$pathid','$pathidtext'".');" '.
+                                         'class="LC_menubuttons_link">'.
+                                         &mt('(Show path)').'</a></span>'.
+                                         '<div id="'.$pathid.'" class="LC_dccid">'.$rows{$url}{path}.$name.
+ '</div>';
+                         }
+                         $result .=
+                             '<td><a href="'.$link.'"><img src="'.$icon.
+                             '" border="0" alt="" />'.$showname.'</a>'.$showpath.'</td>'."\n".
+                             '<td align="right" valign="bottom">'.$rows{$url}{size}.'</td>'."\n".
+                             '<td align="right" valign="bottom">'.$rows{$url}{lastmodified}.'</td>'."\n".
+                             &Apache::loncommon::end_data_table_row();
+                     }
+                 }
+             }
+         }
+     }
+     if ($header_shown) {
+         $result .= &Apache::loncommon::end_data_table();
+         if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
+             $result .= '<br /><span class="LC_warning">'.
+                        &mt('Exclude existing file(s) from grading by checking the "Delete?" checkbox(es) and clicking "Submit Answer"').'</span>';
+         }
+     }
+     if (@bad_file_list) {
+         my $bad_files = '<span class="LC_filename">'.
+             join('</span>, <span class="LC_filename">',@bad_file_list).
+             '</span>';
+         $result.='<p class="LC_error">'.
+                  &mt("These file(s) don't exist: [_1]",$bad_files).
+                  '</p>';
+     }
+     return $result;
+ }
+ sub current_file_info {
+     my ($url,$uploadedfile,$name,$path) = @_;
+     my ($status,$error,%info);
+     my @stat = &Apache::lonnet::stat_file($url);
+     if ((@stat) && ($stat[0] ne 'no_such_dir')) {
+         my ($lastmod,$size);
+         if ($stat[9] =~ /^\d+$/) {
+             $lastmod = &Apache::lonlocal::locallocaltime($stat[9]);
+         }
+         $size = $stat[7]/(1024*1024);
+         $size = sprintf("%.3f",$size);
+         %info = (
+                     link         => $uploadedfile,
+                     name         => $name,
+                     path         => $path,
+                     size         => $size,
+                     lastmodified => $lastmod,
+                 );
+         $status = 'ok';
+     } else {
+         &Apache::lonnet::logthis("bad file is $url");
+         my $icon=&Apache::loncommon::icon($url);
+         $error = '<a href="'.$url.'"><img src="'.$icon.
+                  '" border="0" />'.$uploadedfile.'</a>';
+     }
+     return ($status,\%info,$error);
+ }
+ sub portpath_popup_js {
+     my %lt = &Apache::lonlocal::texthash(
+                                           show => '(Show path)',
+                                           hide => '(Hide)',
+                                         );
+     return <<"END";
+ <script type="text/javascript">
+ // <![CDATA[
+ function showPortPath(id,idtext) {
+     document.getElementById(id).style.display='block';
+     document.getElementById(id).style.textAlign='left';
+     document.getElementById(id).style.textFace='normal';
+     if (document.getElementById(idtext)) {
+         document.getElementById(idtext).innerHTML ='<a href="javascript:hidePortPath(\\''+id+'\\',\\''+idtext+'\\'); '+
+                                                    '"class="LC_menubuttons_link">$lt{'hide'}</a>&nbsp;';
      }
-     return(undef,undef);
+     return;
+ }
+ function hidePortPath(id,idtext) {
+     if (document.getElementById(id)) {
+         document.getElementById(id).style.display='none';
+     }
+     if (document.getElementById(idtext)) {
+         document.getElementById(idtext).innerHTML ='<a href="javascript:showPortPath(\\''+id+'\\',\\''+idtext+'\\');" '+
+                                                    'class="LC_menubuttons_link">$lt{'show'}</a>';
+     }
+     return;
+ }
+ // ]]>
+ </script>
+ END
  }
  sub valid_award {
      my ($award) =@_;
      foreach my $possibleaward ('EXTRA_ANSWER','MISSING_ANSWER', 'ERROR',
- 			       'NO_RESPONSE',
+ 			       'NO_RESPONSE','WRONG_NUMBOXESCHECKED',
  			       'TOO_LONG', 'UNIT_INVALID_INSTRUCTOR',
  			       'UNIT_INVALID_STUDENT', 'UNIT_IRRECONCIBLE',
  			       'UNIT_FAIL', 'NO_UNIT',
  			       'UNIT_NOTNEEDED', 'WANTED_NUMERIC',
- 			       'BAD_FORMULA', 'SIG_FAIL', 'INCORRECT',
+ 			       'BAD_FORMULA', 'NOT_FUNCTION', 'WRONG_FORMAT',
+                                'INTERNAL_ERROR', 'SIG_FAIL', 'INCORRECT',
  			       'MISORDERED_RANK', 'INVALID_FILETYPE',
- 			       'DRAFT', 'SUBMITTED', 'ASSIGNED_SCORE',
+                                'EXCESS_FILESIZE', 'FILENAME_INUSE',
- 			       'APPROX_ANS', 'EXACT_ANS','COMMA_FAIL') {
+ 			       'DRAFT', 'SUBMITTED', 'SUBMITTED_CREDIT',
+                                'ANONYMOUS', 'ANONYMOUS_CREDIT',
+                                'ASSIGNED_SCORE', 'APPROX_ANS',
+ 			       'EXACT_ANS','COMMA_FAIL') {
  	if ($award eq $possibleaward) { return 1; }
      }
      return 0;
  }
+ {
+     my @awards = ('EXTRA_ANSWER', 'MISSING_ANSWER', 'ERROR', 'NO_RESPONSE',
+ 		  'WRONG_NUMBOXESCHECKED','TOO_LONG',
+ 		  'UNIT_INVALID_INSTRUCTOR', 'UNIT_INVALID_STUDENT',
+ 		  'UNIT_IRRECONCIBLE', 'UNIT_FAIL', 'NO_UNIT',
+ 		  'UNIT_NOTNEEDED', 'WANTED_NUMERIC', 'BAD_FORMULA',  'NOT_FUNCTION',
+                   'WRONG_FORMAT', 'INTERNAL_ERROR',
+ 		  'COMMA_FAIL', 'SIG_FAIL', 'INCORRECT', 'MISORDERED_RANK',
+ 		  'INVALID_FILETYPE', 'EXCESS_FILESIZE', 'FILENAME_INUSE',
+                   'DRAFT', 'SUBMITTED',
+                   'SUBMITTED_CREDIT', 'ANONYMOUS', 'ANONYMOUS_CREDIT',
+                   'ASSIGNED_SCORE', 'APPROX_ANS', 'EXACT_ANS');
+     my $i=0;
+     my %fwd_awards = map { ($_,$i++) } @awards;
+     my $max=scalar(@awards);
+     @awards=reverse(@awards);
+     $i=0;
+     my %rev_awards = map { ($_,$i++) } @awards;
+ sub awarddetail_to_awarded {
+     my ($awarddetail) = @_;
+     if ($awarddetail eq 'EXACT_ANS'
+ 	|| $awarddetail eq 'APPROX_ANS') {
+ 	return 1;
+     }
+     return 0;
+ }
+ sub hide_award {
+     my ($award) = @_;
+     if (&Apache::lonhomework::show_no_problem_status()) {
+ 	return 1;
+     }
+     if ($award =~
+ 	/^(?:EXACT_ANS|APPROX_ANS|SUBMITTED|SUBMITTED_CREDIT|ANONYMOUS|ANONYMOUS_CREDIT|ASSIGNED_SCORE|INCORRECT)/) {
+ 	return 1;
+     }
+     return 0;
+ }
  sub finalizeawards {
-     my ($awardref,$msgref,$nameref,$reverse)=@_;
+     my ($awardref,$msgref,$nameref,$reverse,$final_scantron)=@_;
-     my $result=undef;
+     my $result;
-     my $award;
-     my $msg;
      if ($#$awardref == -1) { $result = "NO_RESPONSE"; }
      if ($result eq '' ) {
  	my $blankcount;
- 	foreach $award (@$awardref) {
+ 	foreach my $award (@$awardref) {
  	    if ($award eq '') {
  		$result='MISSING_ANSWER';
  		$blankcount++;
  	    }
  	}
- 	if ($blankcount == ($#$awardref + 1)) { $result = 'NO_RESPONSE'; }
+ 	if ($blankcount == ($#$awardref + 1)) {
+ 	    return ('NO_RESPONSE');
+ 	}
      }
-     if (defined($result)) { return ($result,$msg); }
+     if ($Apache::lonxml::internal_error) { $result='INTERNAL_ERROR'; }
+     if (!$final_scantron && defined($result)) { return ($result); }
+     # if in scantron mode, if the award for any response is
+     # assigned score, then the part gets an assigned score
+     if ($final_scantron
+ 	&& grep {$_ eq 'ASSIGNED_SCORE'} (@$awardref)) {
+ 	return ('ASSIGNED_SCORE');
+     }
+     # if in scantron mode, if the award for any response is
+     # correct and there are non-correct responses,
+     # then the part gets an assigned score
+     if ($final_scantron
+ 	&& (grep { $_ eq 'EXACT_ANS' ||
+ 		   $_ eq 'APPROX_ANS'  } (@$awardref))
+ 	&& (grep { $_ ne 'EXACT_ANS' &&
+ 		   $_ ne 'APPROX_ANS'  } (@$awardref))) {
+ 	return ('ASSIGNED_SCORE');
+     }
      # these awards are ordered from most important error through best correct
+     my $awards = (!$reverse) ? \%fwd_awards : \%rev_awards ;
-     my @awards = ('EXTRA_ANSWER', 'MISSING_ANSWER', 'ERROR', 'NO_RESPONSE',
- 		  'TOO_LONG',
+     my $best = $max;
- 		  'UNIT_INVALID_INSTRUCTOR', 'UNIT_INVALID_STUDENT',
+     my $j=0;
- 		  'UNIT_IRRECONCIBLE', 'UNIT_FAIL', 'NO_UNIT',
+     my $which;
- 		  'UNIT_NOTNEEDED', 'WANTED_NUMERIC', 'BAD_FORMULA',
+     foreach my $award (@$awardref) {
- 		  'COMMA_FAIL', 'SIG_FAIL', 'INCORRECT', 'MISORDERED_RANK',
+ 	if ($awards->{$award} < $best) {
- 		  'INVALID_FILETYPE', 'DRAFT', 'SUBMITTED', 'ASSIGNED_SCORE',
+ 	    $best  = $awards->{$award};
- 		  'APPROX_ANS', 'EXACT_ANS');
+ 	    $which = $j;
-     if ($reverse) { @awards=reverse(@awards); }
+ 	}
-     foreach my $possibleaward (@awards) {
+ 	$j++;
- 	($result,$msg)=&checkstatus($possibleaward,$awardref,$msgref);
+     }
- 	if (defined($result)) { return ($result,$msg); }
+     # if at least one response item is set to include lenient grading
+     # and that item is partially correct then overall award reflects
+     # that, unless an award for one of the other response items does
+     # not fall within the basic awards for correct or incorrect.
+     if ($Apache::inputtags::leniency) {
+         if (($$awardref[$which] eq 'INCORRECT')
+             && (grep { $_ eq 'EXACT_ANS' ||
+                        $_ eq 'APPROX_ANS' ||
+                        $_ eq 'ASSIGNED_SCORE' } (@$awardref))
+             && !((grep { $_ ne 'INCORRECT' &&
+                          $_ ne 'EXACT_ANS' &&
+                          $_ ne 'APPROX_ANS' &&
+                          $_ ne 'ASSIGNED_SCORE' } (@$awardref)))) {
+             return ('ASSIGNED_SCORE');
+         }
+     }
+     if (defined($which)) {
+ 	if (ref($nameref)) {
+ 	    return ($$awardref[$which],$$msgref[$which],$$nameref[$which]);
+ 	} else {
+ 	    return ($$awardref[$which],$$msgref[$which]);
+ 	}
      }
      return ('ERROR',undef);
  }
+ }
  sub decideoutput {
-     my ($award,$awarded,$awardmsg,$solved,$previous,$target)=@_;
+     my ($award,$awarded,$awardmsg,$solved,$previous,$target,$nocorrect,$tdclass)=@_;
      my $message='';
      my $button=0;
      my $previousmsg;
-     my $bgcolor='orange';
+     my $css_class='orange';
      my $added_computer_text=0;
-     my %possiblecolors =
+     my %possible_class =
- 	( 'correct' => '#aaffaa',
+ 	( 'correct'         => 'LC_answer_correct',
- 	  'charged_try' => '#ffaaaa',
+ 	  'charged_try'     => 'LC_answer_charged_try',
- 	  'not_charged_try' => '#ffffaa',
+ 	  'not_charged_try' => 'LC_answer_not_charged_try',
- 	  'no_message' => '#fffff',
+ 	  'no_grade'        => 'LC_answer_no_grade',
+ 	  'no_message'      => 'LC_no_message',
+           'no_charge_warn'  => 'LC_answer_warning',
  	  );
      my $part = $Apache::inputtags::part;
-     my $handgrade =
+     my $tohandgrade = &Apache::lonnet::EXT("resource.$part.handgrade");
- 	('yes' eq lc(&Apache::lonnet::EXT("resource.$part.handgrade")));
+     my $handgrade = ('yes' eq lc($tohandgrade));
+ #
+ # Should "Computer's Answer" be displayed?
+ # Should not be displayed if still answerable,
+ # if the problem is handgraded,
+ # or if the problem does not give a correct answer
+ #
-     my $computer = ($handgrade)? ''
+     my $computer = ($handgrade || $nocorrect)? ''
- 	                       : " ".&mt("Computer's answer now shown above.");
+ 	                       : &mt("Computer's answer now shown above.");
      &Apache::lonxml::debug("handgrade has :$handgrade:");
      if ($previous) { $previousmsg=&mt('You have entered that answer before'); }
-     if      ($solved =~ /^correct/) {
+     if ($solved =~ /^correct/) {
- 	$bgcolor=$possiblecolors{'correct'};
+         $css_class=$possible_class{'correct'};
  	$message=&mt('You are correct.');
  	if ($awarded < 1 && $awarded > 0) {
  	    $message=&mt('You are partially correct.');
- 	    $bgcolor=$possiblecolors{'not_charged_try'};
+ 	    $css_class=$possible_class{'not_charged_try'};
  	} elsif ($awarded < 1) {
  	    $message=&mt('Incorrect.');
- 	    $bgcolor=$possiblecolors{'charged_try'};
+ 	    $css_class=$possible_class{'charged_try'};
  	}
- 	if ($env{'request.filename'} =~
+ 	if ($handgrade ||
- 	    m|/res/lib/templates/examupload.problem$|) {
+             ($env{'request.filename'}=~/\/res\/lib\/templates\/(examupload|DropBox).problem$/)) {
  	    $message = &mt("A score has been assigned.");
  	    $added_computer_text=1;
  	} else {
- Line 558  sub decideoutput {
+ Line 1085  sub decideoutput {
  		$message = '\textbf{'.$message.'}';
  	    } else {
  		$message = "<b>".$message."</b>";
- 		$message.= $computer;
+                 if ($computer) {
+                     $message = "$computer $message";
+                 }
  	    }
  	    $added_computer_text=1;
- 	    unless ($env{'course.'.
+ 	    if ($awarded > 0) {
- 			     $env{'request.course.id'}.
+ 		my ($symb) = &Apache::lonnet::whichuser();
- 			     '.disable_receipt_display'} eq 'yes') {
+ 		if (($symb ne '')
- 		$message.=(($target eq 'web')?'<br />':' ').
+ 		    &&
- 		    &mt('Your receipt is').' '.&Apache::lonnet::receipt($Apache::inputtags::part).
+ 		    ($env{'course.'.$env{'request.course.id'}.
- 		    (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'');
+ 			      '.disable_receipt_display'} ne 'yes') &&
+                     ($Apache::lonhomework::type ne 'practice')) {
+ 		    $message.=(($target eq 'web')?'<br />':' ').
+ 			&mt('Your receipt no. is [_1]',
+ 			    (&Apache::lonnet::receipt($Apache::inputtags::part).
+ 			     (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'')));
+ 		}
  	    }
  	}
- 	$button=0;
+         if ($awarded >= 1) {
+             $button=0;
+         } elsif (&Apache::lonnet::EXT("resource.$part.retrypartial") !~/^1|on|yes$/i) {
+             $button=0;
+         } else {
+             $button=1;
+         }
  	$previousmsg='';
      } elsif ($solved =~ /^excused/) {
  	if ($target eq 'tex') {
- Line 577  sub decideoutput {
+ Line 1118  sub decideoutput {
  	} else {
  	    $message = "<b>".&mt('You are excused from the problem.')."</b>";
  	}
- 	$bgcolor=$possiblecolors{'charged_try'};
+ 	$css_class=$possible_class{'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'};
+ 	    $css_class=$possible_class{'charged_try'};
  	    $button=1;
  	} else {
  	    if ($target eq 'tex') {
  		$message = '\textbf{'.&mt('You are correct.').'}';
  	    } else {
  		$message = "<b>".&mt('You are correct.')."</b>";
- 		$message.= $computer;
+                 if ($computer) {
+                     $message = "$computer $message";
+                 }
  	    }
  	    $added_computer_text=1;
- 	    unless ($env{'course.'.
+ 	    if  ($awarded > 0
+ 		 && $env{'course.'.
  			     $env{'request.course.id'}.
- 			     '.disable_receipt_display'} eq 'yes') {
+ 			     '.disable_receipt_display'} ne 'yes') {
  		$message.=(($target eq 'web')?'<br />':' ').
- 		    'Your receipt is '.&Apache::lonnet::receipt($Apache::inputtags::part).
+ 		    &mt('Your receipt is [_1]',
- 		    (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'');
+ 			(&Apache::lonnet::receipt($Apache::inputtags::part).
+ 			 (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'')));
  	    }
- 	    $bgcolor=$possiblecolors{'correct'};
+ 	    $css_class=$possible_class{'correct'};
  	    $button=0;
  	    $previousmsg='';
  	}
      } elsif ($award eq 'NO_RESPONSE') {
  	$message = '';
- 	$bgcolor=$possiblecolors{'no_feedback'};
+ 	$css_class=$possible_class{'no_feedback'};
  	$button=1;
      } elsif ($award eq 'EXTRA_ANSWER') {
  	$message = &mt('Some extra items were submitted.');
- 	$bgcolor=$possiblecolors{'not_charged_try'};
+ 	$css_class=$possible_class{'not_charged_try'};
  	$button = 1;
      } elsif ($award eq 'MISSING_ANSWER') {
  	$message = &mt('Some items were not submitted.');
- 	$bgcolor=$possiblecolors{'not_charged_try'};
+         if ($target ne 'tex') {
+            $message .= &Apache::loncommon::help_open_topic('Some_Items_Were_Not_Submitted');
+         }
+         if (&Apache::lonhomework::show_some_problem_status()) {
+             $css_class=$possible_class{'no_charge_warn'};
+         } else {
+             $css_class=$possible_class{'not_charged_try'};
+         }
  	$button = 1;
+     } elsif ($award eq 'WRONG_NUMBOXESCHECKED') {
+         $message = &mt('Number of boxes checked outside permissible range (either too few or too many).');
+         if ($target ne 'tex') {
+            $message .= &Apache::loncommon::help_open_topic('Wrong_Num_Boxes_Checked');
+         }
+         $css_class=$possible_class{'not_charged_try'};
+         $button = 1;
      } elsif ($award eq 'ERROR') {
- 	$message = &mt('An error occured while grading your answer.');
+ 	$message = &mt('An error occurred while grading your answer.');
- 	$bgcolor=$possiblecolors{'not_charged_try'};
+ 	$css_class=$possible_class{'not_charged_try'};
  	$button = 1;
      } elsif ($award eq 'TOO_LONG') {
  	$message = &mt("The submitted answer was too long.");
- 	$bgcolor=$possiblecolors{'not_charged_try'};
+ 	$css_class=$possible_class{'not_charged_try'};
  	$button=1;
      } elsif ($award eq 'WANTED_NUMERIC') {
  	$message = &mt("This question expects a numeric answer.");
- 	$bgcolor=$possiblecolors{'not_charged_try'};
+ 	$css_class=$possible_class{'not_charged_try'};
  	$button=1;
      } elsif ($award eq 'MISORDERED_RANK') {
- 	$message = &mt('You have provided an invalid ranking');
+         $message = &mt('You have provided an invalid ranking.');
- 	if ($target ne 'tex') {
+         if ($target ne 'tex') {
- 	    $message.=', '.&mt('please refer to').' '.&Apache::loncommon::help_open_topic('Ranking_Problems','help on ranking problems');
+             $message.=' '.&mt('Please refer to [_1]',&Apache::loncommon::help_open_topic('Ranking_Problems',&mt('help on ranking problems')));
- 	}
+         }
- 	$bgcolor=$possiblecolors{'not_charged_try'};
+ 	$css_class=$possible_class{'not_charged_try'};
  	$button=1;
+     } elsif ($award eq 'EXCESS_FILESIZE') {
+         $message = &mt("Submission won't be graded. The combined size of submitted files exceeded the amount allowed.");
+         $css_class=$possible_class{'not_charged_try'};
+         $button=1;
+     } elsif ($award eq 'FILENAME_INUSE') {
+         $message = &mt('You have already uploaded a file with that filename.');
+         if ($target eq 'tex') {
+             $message.= "\\\\\n";
+         } else {
+             $message .= '<br />';
+         }
+         $message .= &mt('Please use a different filename.');
+         $css_class=$possible_class{'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.');
+ 	$message = &mt("Submission won't be graded. The type of file submitted is not allowed.");
- 	$bgcolor=$possiblecolors{'not_charged_try'};
+ 	$css_class=$possible_class{'not_charged_try'};
  	$button=1;
      } elsif ($award eq 'SIG_FAIL') {
  	my ($used,$min,$max)=split(':',$awardmsg);
- 	my $word;
+ 	my $word = ($used < $min) ? 'more' : 'fewer';
- 	if ($used < $min) { $word=&mt('more'); }
+ 	$message = &mt("Submission not graded. Use $word significant figures.");
- 	if ($used > $max) { $word=&mt('fewer'); }
+         if (&Apache::lonhomework::show_some_problem_status()) {
- 	$message = &mt("Submission not graded.  Use [_2] digits.",$used,$word);
+             $css_class=$possible_class{'no_charge_warn'};
- 	$bgcolor=$possiblecolors{'not_charged_try'};
+         } else {
+             $css_class=$possible_class{'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'};
+ 	$css_class=$possible_class{'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'};
+         if (&Apache::lonhomework::show_some_problem_status()) {
+             $css_class=$possible_class{'no_charge_warn'};
+         } else {
+             $css_class=$possible_class{'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'};
+         if (&Apache::lonhomework::show_some_problem_status()) {
+             $css_class=$possible_class{'no_charge_warn'};
+         } else {
+             $css_class=$possible_class{'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'};
+         if (&Apache::lonhomework::show_some_problem_status()) {
+             $css_class=$possible_class{'no_charge_warn'};
+         } else {
+             $css_class=$possible_class{'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'};
+         if (&Apache::lonhomework::show_some_problem_status()) {
+             $css_class=$possible_class{'no_charge_warn'};
+         } else {
+             $css_class=$possible_class{'not_charged_try'};
+         }
  	$button=1;
      } elsif ($award eq 'COMMA_FAIL') {
  	$message = &mt("Proper comma separation is required").'.';
- 	$bgcolor=$possiblecolors{'not_charged_try'};
+ 	$css_class=$possible_class{'not_charged_try'};
  	$button=1;
      } elsif ($award eq 'BAD_FORMULA') {
- 	$message = &mt("Unable to understand formula");
+ 	$message = &mt("Unable to understand formula").'.';
- 	$bgcolor=$possiblecolors{'not_charged_try'};
+         if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Formula_Answers')};
+ 	$css_class=$possible_class{'not_charged_try'};
  	$button=1;
+     } elsif ($award eq 'NOT_FUNCTION') {
+         $message = &mt("Not a function").'.';
+         $css_class=$possible_class{'not_charged_try'};
+         $button=1;
+     } elsif ($award eq 'WRONG_FORMAT') {
+         $message = &mt("Wrong format").'.';
+         $css_class=$possible_class{'not_charged_try'};
+         $button=1;
+      } elsif ($award eq 'INTERNAL_ERROR') {
+         $message = &mt("An internal error occurred while processing your answer. Please try again later.");
+         $css_class=$possible_class{'not_charged_try'};
+         $button=1;
      } elsif ($award eq 'INCORRECT') {
  	$message = &mt("Incorrect").'.';
- 	$bgcolor=$possiblecolors{'charged_try'};
+ 	$css_class=$possible_class{'charged_try'};
  	$button=1;
      } elsif ($award eq 'SUBMITTED') {
  	$message = &mt("Your submission has been recorded.");
- 	$bgcolor=$possiblecolors{'correct'};
+ 	$css_class=$possible_class{'no_grade'};
  	$button=1;
+     } elsif ($award eq 'SUBMITTED_CREDIT') {
+         $message = &mt("Your submission has been recorded, and credit awarded.");
+         $css_class=$possible_class{'correct'};
+         $button=1;
+     } elsif ($award eq 'ANONYMOUS') {
+         $message = &mt("Your anonymous submission has been recorded.");
+         $css_class=$possible_class{'no_grade'};
+         $button=1;
+     } elsif ($award eq 'ANONYMOUS_CREDIT') {
+         $message = &mt("Your anonymous submission has been recorded, and credit awarded.");
+         $css_class=$possible_class{'correct'};
+         $button=1;
      } elsif ($award eq 'DRAFT') {
- 	$message = &mt("A draft copy has been saved.");
+ 	$message = &mt("Copy saved but not submitted.");
- 	$bgcolor=$possiblecolors{'not_charged_try'};
+ 	$css_class=$possible_class{'not_charged_try'};
  	$button=1;
      } elsif ($award eq 'ASSIGNED_SCORE') {
  	$message = &mt("A score has been assigned.");
- 	$bgcolor=$possiblecolors{'correct'};
+ 	$css_class=$possible_class{'correct'};
  	$button=0;
      } elsif ($award eq '') {
  	if ($handgrade && $Apache::inputtags::status[-1] eq 'SHOW_ANSWER') {
  	    $message = &mt("Nothing submitted.");
- 	    $bgcolor=$possiblecolors{'charged_try'};
+ 	    $css_class=$possible_class{'charged_try'};
  	} else {
- 	    $bgcolor=$possiblecolors{'not_charged_try'};
+ 	    $css_class=$possible_class{'not_charged_try'};
  	}
  	$button=1;
      } else {
  	$message = &mt("Unknown message").": $award";
  	$button=1;
      }
-     if (lc($Apache::lonhomework::problemstatus) eq 'no'  &&
+     my (undef,undef,$domain,$user)=&Apache::lonnet::whichuser();
- 	$Apache::inputtags::status[-1] ne 'SHOW_ANSWER') {
+     foreach my $resid(@Apache::inputtags::response){
- 	$message = &mt("Answer Submitted: Your final submission will be graded after the due date.");
+         if ($Apache::lonhomework::history{"resource.$part.$resid.handback"}) {
- 	$bgcolor=$possiblecolors{'correct'};
+             if ($target eq 'tex') {
+                 $message.= "\\\\\n";
+             } else {
+                 $message.='<br />';
+             }
+ 	    my @files = split(/\s*,\s*/,
+ 			      $Apache::lonhomework::history{"resource.$part.$resid.handback"});
+ 	    my $file_msg;
+ 	    foreach my $file (@files) {
+                 if ($target eq 'tex') {
+                     $file_msg.= "\\\\\n".$file;
+                 } else {
+                     $file_msg.= '<br /><a href="/uploaded/'."$domain/$user".'/'.$file.'">'.$file.'</a>';
+                 }
+ 	    }
+ 	    $message .= &mt('Returned file(s): [_1]',$file_msg);
+             if ($target eq 'tex') {
+                 $message.= "\\\\\n";
+             } else {
+                 $message.='<br />';
+             }
+ 	}
+     }
+     if (&Apache::lonhomework::hide_problem_status()
+ 	&& $Apache::inputtags::status[-1] ne 'SHOW_ANSWER'
+ 	&& &hide_award($award)) {
+         $message = &mt("Answer Submitted: Your final submission will be graded after the due date.");
+         my @interval= &Apache::lonnet::EXT("resource.$part.interval");
+         if ($interval[0] =~ /\d+/) {
+             my $first_access=&Apache::lonnet::get_first_access($interval[1]);
+             if (defined($first_access)) {
+                 my $due_date= &Apache::lonnet::EXT("resource.$part.duedate");
+                 my ($timelimit) = ($interval[0] =~ /^(\d+)/);
+                 unless (($due_date) && ($due_date < $first_access + $timelimit)) {
+                     $message = &mt("Answer Submitted: Your final submission will be graded when the time limit is reached.");
+                 }
+             }
+         }
+ 	$css_class=$possible_class{'no_grade'};
  	$button=1;
+         if ($env{'course.'.$env{'request.course.id'}.'.type'} eq 'Placement') {
+             if ($Apache::inputtags::status[-1] eq 'CANNOT_ANSWER') {
+                 $message = 'Answer Submitted';
+             } else {
+                 undef($message);
+             }
+         }
      }
      if ($Apache::inputtags::status[-1] eq 'SHOW_ANSWER' &&
  	!$added_computer_text && $target ne 'tex') {
- 	$message.= $computer;
+         if ($computer) {
+             $message = "$computer $message";
+         }
  	$added_computer_text=1;
      }
-     return ($button,$bgcolor,$message,$previousmsg);
+     if ($Apache::lonhomework::type eq 'practice') {
+        if ($target eq 'web') {
+            $message .= '<br />';
+        } else {
+            $message .= ' ';
+        }
+        $message.=&mt('Submissions to practice problems are not permanently recorded.');
+     }
+     return ($button,$css_class,$message,$previousmsg);
  }
  sub markup_unit {
- Line 770  sub setgradedata {
+ Line 1442  sub setgradedata {
  	$Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
  	$Apache::lonhomework::results{"resource.$id.afterduedate"}=$award;
  	return '';
-     } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} !~
+     } elsif ( $Apache::lonhomework::history{"resource.$id.awarded"} < 1
- 	      /^correct/ || $Apache::lonhomework::scantronmode ||
+ 	      || $Apache::lonhomework::scantronmode
- 	      lc($Apache::lonhomework::problemstatus) eq 'no') {
+ 	      || &Apache::lonhomework::hide_problem_status()  ) {
          # the student doesn't already have it correct,
  	# or we are in a mode (scantron orno problem status) where a correct
          # can become incorrect
- Line 794  sub setgradedata {
+ Line 1466  sub setgradedata {
  	    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"}+=
+ 		if (defined($Apache::lonhomework::results{"resource.$id.$res.awarded"})) {
- 		    $Apache::lonhomework::results{"resource.$id.$res.awarded"};
+ 		    $Apache::lonhomework::results{"resource.$id.awarded"}+=
+ 			$Apache::lonhomework::results{"resource.$id.$res.awarded"};
+ 		} else {
+ 		    $Apache::lonhomework::results{"resource.$id.awarded"}+=
+ 			&awarddetail_to_awarded($Apache::lonhomework::results{"resource.$id.$res.awarddetail"});
+ 		}
  	    }
  	    if ($numawards > 0) {
  		$Apache::lonhomework::results{"resource.$id.awarded"}/=
- Line 807  sub setgradedata {
+ Line 1484  sub setgradedata {
  	    $Apache::lonhomework::results{"resource.$id.solved"} =
  		$solvemsg;
  	    $Apache::lonhomework::results{"resource.$id.awarded"} = '1';
+         } elsif ( $award eq 'SUBMITTED_CREDIT' ) {
+             $Apache::lonhomework::results{"resource.$id.tries"} =
+                 $Apache::lonhomework::history{"resource.$id.tries"} + 1;
+             $Apache::lonhomework::results{"resource.$id.solved"} =
+                 'credit_attempted';
+             $Apache::lonhomework::results{"resource.$id.awarded"} = '1';
+         }  elsif ( $award eq 'ANONYMOUS_CREDIT' ) {
+             $Apache::lonhomework::results{"resource.$id.tries"} =
+                 $Apache::lonhomework::history{"resource.$id.tries"} + 1;
+             $Apache::lonhomework::results{"resource.$id.solved"} =
+                 'credit_attempted';
+             $Apache::lonhomework::results{"resource.$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' ||
+ 	    if (&Apache::lonhomework::hide_problem_status()
- 		$Apache::lonhomework::scantronmode) {
+ 		|| $Apache::lonhomework::scantronmode) {
  		$Apache::lonhomework::results{"resource.$id.awarded"} = 0;
  	    }
  	    $Apache::lonhomework::results{"resource.$id.solved"} =
- Line 821  sub setgradedata {
+ Line 1510  sub setgradedata {
  		$Apache::lonhomework::history{"resource.$id.tries"} + 1;
  	    $Apache::lonhomework::results{"resource.$id.solved"} =
  		'ungraded_attempted';
+         }  elsif ( $award eq 'ANONYMOUS' ) {
+             $Apache::lonhomework::results{"resource.$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' ) {
- Line 830  sub setgradedata {
+ Line 1524  sub setgradedata {
  	} else {
  	    $Apache::lonhomework::results{"resource.$id.solved"} =
  		'incorrect_attempted';
- 	    if (lc($Apache::lonhomework::problemstatus) eq 'no' ||
+ 	    if (&Apache::lonhomework::show_no_problem_status()
- 		$Apache::lonhomework::scantronmode) {
+ 		|| $Apache::lonhomework::scantronmode) {
  		$Apache::lonhomework::results{"resource.$id.tries"} =
  		    $Apache::lonhomework::history{"resource.$id.tries"} + 1;
  		$Apache::lonhomework::results{"resource.$id.awarded"} = 0;
  	    }
+ 	    if (&Apache::lonhomework::show_some_problem_status()) {
+ 		# clear out the awarded if they had gotten it wrong/right
+ 		# and are now in an error mode
+ 		$Apache::lonhomework::results{"resource.$id.awarded"} = '';
+ 	    }
  	}
  	if (defined($msg)) {
  	    $Apache::lonhomework::results{"resource.$id.awardmsg"} = $msg;
- Line 849  sub setgradedata {
+ Line 1549  sub setgradedata {
  	    # 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') {
+ 		if (&Apache::lonhomework::show_problem_status()) {
  		    delete($Apache::lonhomework::results{"resource.$id.tries"});
  		    $Apache::lonhomework::results{"resource.$id.previous"} = '1';
  		}
- Line 863  sub setgradedata {
+ Line 1563  sub setgradedata {
  		$Apache::lonhomework::results{"resource.$id.previous"} = '0';
  	    }
  	}
-     } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} =~
+     } elsif ( $Apache::lonhomework::history{"resource.$id.awarded"} == 1 ) {
- 	      /^correct/ ) {
  	#delete all data as they student already has it correct
  	&removealldata($id);
  	#and since they didn't do anything we were never here
- Line 874  sub setgradedata {
+ Line 1573  sub setgradedata {
      if ($award eq 'SUBMITTED') {
  	&Apache::response::add_to_gradingqueue();
      }
+     $Apache::lonhomework::results{"resource.$id.type"} = $Apache::lonhomework::type;
+     $Apache::lonhomework::results{"resource.$id.duedate"} = &Apache::lonnet::EXT("resource.$id.duedate");
+     $Apache::lonhomework::results{"resource.$id.hinttries"} = &Apache::lonnet::EXT("resource.$id.hinttries");
+     $Apache::lonhomework::results{"resource.$id.version"} = &Apache::lonnet::usedversion();
+     $Apache::lonhomework::results{"resource.$id.maxtries"} = &Apache::lonnet::EXT("resource.$id.maxtries");
+ }
+ sub find_which_previous {
+     my ($version) = @_;
+     my $part = $Apache::inputtags::part;
+     my (@previous_version);
+     foreach my $resp (@Apache::inputtags::response) {
+ 	my $key = "$version:resource.$part.$resp.submission";
+ 	my $submission = $Apache::lonhomework::history{$key};
+ 	my %previous = &Apache::response::check_for_previous($submission,
+ 							     $part,$resp,
+ 							     $version);
+ 	push(@previous_version,$previous{'version'});
+     }
+     return &previous_match(\@previous_version,
+ 			   scalar(@Apache::inputtags::response));
+ }
+ sub previous_match {
+     my ($previous_array,$count) = @_;
+     my $match = 0;
+     my @matches;
+     foreach my $versionar (@$previous_array) {
+ 	foreach my $version (@$versionar) {
+ 	    $matches[$version]++;
+ 	}
+     }
+     my $which=0;
+     foreach my $elem (@matches) {
+ 	if ($elem eq $count) {
+ 	    $match=1;
+ 	    last;
+ 	}
+ 	$which++;
+     }
+     return ($match,$which);
  }
  sub grade {
- Line 891  sub grade {
+ Line 1631  sub grade {
  	    &Apache::lonxml::debug("got message $value from $response for $id");
  	    push (@msgs,$value);
  	}
- 	my ($finalaward,$msg) = &finalizeawards(\@awards,\@msgs);
+ 	my ($finalaward,$msg) =
+ 	    &finalizeawards(\@awards,\@msgs,undef,undef,
+ 			    $Apache::lonhomework::scantronmode);
  	my $previously_used;
  	if ( $#Apache::inputtags::previous eq $#awards ) {
- 	    my $match=0;
+ 	    my ($match) =
- 	    my @matches;
+ 		&previous_match(\@Apache::inputtags::previous_version,
- 	    foreach my $versionar (@Apache::inputtags::previous_version) {
+ 				scalar(@Apache::inputtags::response));
- 		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 $value (@Apache::inputtags::previous) {
- Line 918  sub grade {
+ Line 1656  sub grade {
      return '';
  }
+ sub get_grade_messages {
+     my ($id,$prefix,$target,$status,$nocorrect,$tdclass) = @_;
+ # nocorrect suppresses "Computer's answer now shown above"
+     my ($message,$latemessage,$trystr,$previousmsg);
+     my $showbutton = 1;
+     my $award = $Apache::lonhomework::history{"$prefix.award"};
+     my $awarded = $Apache::lonhomework::history{"$prefix.awarded"};
+     my $solved = $Apache::lonhomework::history{"$prefix.solved"};
+     my $previous = $Apache::lonhomework::history{"$prefix.previous"};
+     my $awardmsg = $Apache::lonhomework::history{"$prefix.awardmsg"};
+     &Apache::lonxml::debug("Found Award |$award|$solved|$awardmsg");
+     if ( $award ne '' || $solved ne '' || $status eq 'SHOW_ANSWER') {
+ 	&Apache::lonxml::debug('Getting message');
+ 	($showbutton,my $css_class,$message,$previousmsg) =
+ 	    &decideoutput($award,$awarded,$awardmsg,$solved,$previous,
+ 			  $target,(($status eq 'CAN_ANSWER') || $nocorrect),$tdclass);
+ 	if ($target eq 'tex') {
+ 	    $message='\vskip 2 mm '.$message.' ';
+ 	} else {
+             if ($message) {
+ 	        $message="<td class=\"$tdclass $css_class\">$message</td>";
+             } else {
+                 $message="<td class=\"$tdclass\"></td>";
+             }
+ 	    if ($previousmsg) {
+ 		$previousmsg="<td class=\"$tdclass LC_answer_previous\">$previousmsg</td>";
+ 	    }
+ 	}
+     }
+     my $tries = $Apache::lonhomework::history{"$prefix.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 $tries_text= &get_tries_text();
+     if ($showbutton) {
+ 	if ($target eq 'tex') {
+ 	    if ($env{'request.state'} ne "construct"
+ 		&& $Apache::lonhomework::type ne 'exam'
+ 		&& $env{'form.suppress_tries'} ne 'yes') {
+ 		$trystr ='{\vskip 1 mm \small '
+                         .&mt('[_1]'.$tries_text.'[_2] [_3]'
+ 				,'\textit{','}',$tries.'/'.$maxtries )
+                         .'} \vskip 2 mm';
+ 	    } else {
+ 		$trystr = '\vskip 0 mm ';
+ 	    }
+ 	} else {
+ 	    my $trial =$tries;
+ 	    if ($Apache::lonhomework::parsing_a_task) {
+ 	    } elsif($env{'request.state'} ne 'construct') {
+ 		$trial.="/".&Apache::lonhtmlcommon::direct_parm_link($maxtries,$env{'request.symb'},'maxtries',$id,$target);
+ 	    } else {
+ 		if (defined($Apache::inputtags::params{'maxtries'})) {
+ 		    $trial.="/".$Apache::inputtags::params{'maxtries'};
+ 		}
+ 	    }
+             unless (($env{'request.state'} ne "construct") &&
+                     ($env{'course.'.$env{'request.course.id'}.'.type'} eq 'Placement') &&
+                     (!$env{'request.role.adv'})) {
+                 $trystr = '<span class="LC_nobreak">'.&mt($tries_text.' [_1]',$trial).'</span>';
+             }
+ 	    $trystr = '<td class="'.$tdclass.'">'.$trystr.'</td>';
+ 	}
+     }
+     if ($Apache::lonhomework::history{"$prefix.afterduedate"}) {
+ 	#last submissions was after due date
+ 	$latemessage=&mt(' The last submission was after the Due Date ');;
+ 	if ($target eq 'web') {
+ 	    $latemessage='<td class="'.$tdclass.' LC_answer_late">'.$latemessage.'</td>';
+ 	}
+     }
+     return ($previousmsg,$latemessage,$message,$trystr,$showbutton);
+ }
  sub gradestatus {
-     my ($id,$target) = @_;
+     my ($id,$target,$no_previous) = @_;
      my $showbutton = 1;
-     my $bgcolor = '';
      my $message = '';
      my $latemessage = '';
      my $trystr='';
      my $button='';
      my $previousmsg='';
+     my $tdclass='';
      my $status = $Apache::inputtags::status['-1'];
      &Apache::lonxml::debug("gradestatus has :$status:");
- Line 934  sub gradestatus {
+ Line 1753  sub gradestatus {
  	 && $status ne 'UNAVAILABLE'
  	 && $status ne 'INVALID_ACCESS'
  	 && $status ne 'NEEDS_CHECKIN'
- 	 && $status ne 'NOT_IN_A_SLOT') {
+ 	 && $status ne 'NOT_IN_A_SLOT'
- 	my $award = $Apache::lonhomework::history{"resource.$id.award"};
+          && $status ne 'RESERVABLE'
- 	my $awarded = $Apache::lonhomework::history{"resource.$id.awarded"};
+          && $status ne 'RESERVABLE_LATER'
- 	my $solved = $Apache::lonhomework::history{"resource.$id.solved"};
+          && $status ne 'NOTRESERVABLE'
- 	my $previous = $Apache::lonhomework::history{"resource.$id.previous"};
+          && $status ne 'NEED_DIFFERENT_IP') {
- 	my $awardmsg = $Apache::lonhomework::history{"resource.$id.awardmsg"};
- 	&Apache::lonxml::debug("Found Award |$award|$solved|$awardmsg");
+ 	if ($status eq 'SHOW_ANSWER') {
- 	if ( $award ne '' || $solved ne '' || $status eq 'SHOW_ANSWER') {
+             $showbutton = 0;
- 	    &Apache::lonxml::debug('Getting message');
+         }
- 	    ($showbutton,$bgcolor,$message,$previousmsg) =
- 		&decideoutput($award,$awarded,$awardmsg,$solved,$previous,
+         unless (($status eq 'SHOW_ANSWER') || ($status eq 'CANNOT_ANSWER')) {
- 			      $target);
+             if ($target ne 'tex') {
- 	    if ($target eq 'tex') {
+                 $tdclass = 'LC_status_submit_'.$id;
- 		$message='\vskip 2 mm '.$message.' ';
+             }
- 	    } else {
+         }
- 		$message="<td bgcolor=\"$bgcolor\">$message</td>";
- 		if ($previousmsg) {
+ 	($previousmsg,$latemessage,$message,$trystr) =
- 		    $previousmsg="<td bgcolor=\"#aaaaff\">$previousmsg</td>";
+ 	    &get_grade_messages($id,"resource.$id",$target,$status,
- 		}
+ 				$showbutton,$tdclass);
- 	    }
+ 	if ($status eq 'CANNOT_ANSWER') {
+ 	    $showbutton = 0;
  	}
- 	my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
+ 	if ( $status eq 'SHOW_ANSWER') {
- 	my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
+ 	    undef($previousmsg);
- 	&Apache::lonxml::debug("got maxtries of :$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').'" />';
+ 		$button =
- 	    }
+             '<input onmouseup="javascript:setSubmittedPart(\''.$id.'\');this.form.action+=\'#'.&escape($id).'\';"
- 	}
+                     type="submit" name="submit_'.$id.'" id="submit_'.$id.'" class="LC_hwk_submit"
- 	if ($Apache::lonhomework::history{"resource.$id.afterduedate"}) {
+                     value="'.&mt('Submit Answer').'" />&nbsp;'.
- 	    #last submissions was after due date
+                     '<div id="msg_submit_'.$id.'" style="display:none">'.
- 	    $latemessage=&mt(' The last submission was after the Due Date ');;
+                     &mt('Processing your submission ...').'</div>';
- 	    if ($target eq 'web') {
- 		$latemessage='<td bgcolor="#ffaaaa">'.$latemessage.'</td>';
  	    }
  	}
      }
      my $output= $previousmsg.$latemessage.$message.$trystr;
      if ($output =~ /^\s*$/) {
- Line 1009  sub gradestatus {
+ Line 1797  sub gradestatus {
  	if ($target eq 'tex') {
  	    return $button.' \vskip 0 mm '.$output.' ';
  	} else {
- 	    return '<table><tr><td>'.$button.'</td>'.$output.'</tr></table>';
+ 	    $output =
+ 		'<table><tr><td>'.$button.'</td>'.$output;
+ 	    if ((!$no_previous) &&
+                 (($env{'course.'.$env{'request.course.id'}.'.type'} ne 'Placement') ||
+                  ($env{'request.role.adv'}))) {
+ 		$output.='<td class="'.$tdclass.'">'.&previous_tries($id,$target).'</td>';
+ 	    }
+ 	    $output.= '</tr></table>';
+ 	    return $output;
  	}
      }
  }
+ sub previous_tries {
+     my ($id,$target) = @_;
+     my $output;
+     my $status = $Apache::inputtags::status['-1'];
+     my $count;
+     my %count_lookup;
+     my ($lastrndseed,$lasttype);
+     my $numstamps = 0;
+     foreach my $i (1..$Apache::lonhomework::history{'version'}) {
+ 	my $prefix = $i.":resource.$id";
+         my $is_anon;
+         my $curr_type = $Apache::lonhomework::history{"$prefix.type"};
+         if (defined($env{'form.grade_symb'})) {
+             if (($curr_type eq 'anonsurvey') || ($curr_type eq 'anonsurveycred')) {
+                 $is_anon = 1;
+             }
+         }
+ 	next if (!exists($Apache::lonhomework::history{"$prefix.award"}));
+ 	$count++;
+ 	$count_lookup{$i} = $count;
+         my $curr_rndseed = $Apache::lonhomework::history{"$prefix.rndseed"};
+ 	my ($previousmsg,$latemessage,$message,$trystr);
+ 	($previousmsg,$latemessage,$message,$trystr) =
+ 	    &get_grade_messages($id,"$prefix",$target,$status);
+ 	if ($previousmsg ne '') {
+ 	    my ($match,$which) = &find_which_previous($i);
+ 	    $message=$previousmsg;
+ 	    my $previous = $count_lookup{$which};
+ 	    $message =~ s{(</td>)}{ as submission \# $previous $1};
+ 	} elsif ($Apache::lonhomework::history{"$prefix.tries"}) {
+ 	    if (!(&Apache::lonhomework::hide_problem_status()
+ 		  && $Apache::inputtags::status[-1] ne 'SHOW_ANSWER')
+ 		&& $Apache::lonhomework::history{"$prefix.solved"} =~/^correct/
+ 		) {
+                 my $txt_correct = &mt('Correct');
+                 my $awarded = $Apache::lonhomework::history{"$prefix.awarded"};
+                 if ($awarded < 1 && $awarded > 0) {
+                     $txt_correct=&mt('Partially Correct');
+                 } elsif ($awarded < 1) {
+                     if ($awarded eq '') {
+                         $txt_correct='';
+                     } else {
+                         $txt_correct=&mt('Incorrect');
+                     }
+                 }
+ 		$message =~ s{(<td.*?>)(.*?)(</td>)}
+                              {$1 <strong>$txt_correct</strong>. $3}s;
+ 	    }
+             my $trystr = "(".&mt('Try [_1]',$Apache::lonhomework::history{"$prefix.tries"}).")";
+             if (($curr_rndseed ne '') &&  ($lastrndseed ne '')) {
+                 if (($curr_rndseed ne $lastrndseed) &&
+                     (($curr_type eq 'randomizetry') || ($lasttype eq 'randomizetry'))) {
+                     $trystr .= '<br /><span style="color: green; white-space: nowrap; font-style: italic; font-weight: bold; font-size: 80%;">'.&mt('New problem variation this try.').'</span>';
+                 }
+             }
+ 	    $message =~ s{(</td>)}{ $trystr $1};
+ 	}
+ 	my ($class) = ($message =~ m{<td.*class="([^"]*)"}); #"
+ 	$message =~ s{(<td.*?>)}{<td>};
+ 	$output .= '<tr class="'.$class.'">'.
+ 	           '<td align="center">'.$count.'</td>'.$message;
+         if ((!$is_anon) && ($Apache::lonhomework::history{"$prefix.tries"}) &&
+             ($Apache::lonhomework::history{"$prefix.award"} ne 'ASSIGNED_SCORE') &&
+             ($Apache::lonhomework::history{$i.':timestamp'})) {
+             $output .= '<td>'.&Apache::lonlocal::locallocaltime(
+                              $Apache::lonhomework::history{$i.':timestamp'}).'</td>';
+             $numstamps ++;
+         } else {
+             $output .= '<td></td>';
+         }
+ 	foreach my $resid (@Apache::inputtags::response) {
+ 	    my $prefix = $prefix.".$resid";
+ 	    if (exists($Apache::lonhomework::history{"$prefix.submission"})) {
+ 		my $submission =
+ 		    $Apache::inputtags::submission_display{"$prefix.submission"};
+ 		if (!defined($submission)) {
+ 		    $submission =
+ 			$Apache::lonhomework::history{"$prefix.submission"};
+ 		}
+                 if ($is_anon) {
+                     $output.='<td>'.&mt('(only shown to submitter)').'</td>';
+                 } else {
+ 		    $output.='<td>'.$submission.'</td>';
+                 }
+ 	    } else {
+ 		$output.='<td></td>';
+ 	    }
+ 	}
+ 	$output.=&Apache::loncommon::end_data_table_row()."\n";
+         $lastrndseed = $curr_rndseed;
+         $lasttype = $curr_type;
+     }
+     return if ($output eq '');
+     my $headers = '<tr>'.
+                   '<th>'.&mt('Submission #').'</th>'.
+                   '<th>'.&mt('Try').'</th><th>';
+     if ($numstamps) {
+         $headers .= &mt('When');
+     }
+     $headers .= '</th>';
+     my $colspan = scalar(@Apache::inputtags::response);
+     if ($colspan > 1) {
+         $headers .= '<th colspan="'.$colspan.'">';
+     } else {
+         $headers .= '<th>';
+     }
+     $headers .= &mt('Submitted Answer').'</th></tr>';
+     $output ='<table class="LC_prior_tries">'.$headers.$output.'</table>';
+     my $tries_text = &get_tries_text('link');
+     my $prefix = $env{'form.request.prefix'};
+     $prefix =~ tr{.}{_};
+     my $function_name = 'LONCAPA_previous_tries_'.$prefix;
+     if (($env{'request.state'} eq 'construct') || ($id =~ /\W/)) {
+         $function_name .= $Apache::lonxml::curdepth;
+     } else {
+         $function_name .= $id;
+     }
+     $function_name .= '_'.$Apache::lonxml::counter;
+     my $possmathjax = 1;
+     my $result = &Apache::loncommon::modal_adhoc_window($function_name,420,410,$output,
+                                                         &mt($tries_text),$possmathjax)."<br />";
+     return $result;
+ }
+ sub get_tries_text {
+     my ($context) = @_;
+     my $tries_text;
+     if ($context eq 'link') {
+         $tries_text = 'Previous Tries';
+     } else {
+         $tries_text = 'Tries';
+     }
+     if ( $Apache::lonhomework::type eq 'survey' ||
+          $Apache::lonhomework::type eq 'surveycred' ||
+          $Apache::lonhomework::type eq 'anonsurvey' ||
+          $Apache::lonhomework::type eq 'anonsurveycred' ||
+          $Apache::lonhomework::parsing_a_task) {
+         if ($context eq 'link') {
+             $tries_text = 'Previous Submissions';
+         } else {
+             $tries_text = 'Submissions';
+         }
+     }
+     return $tries_text;
+ }
+ sub spelling_languages {
+     my %langchoices;
+     foreach my $id (&Apache::loncommon::languageids()) {
+         my $code = &Apache::loncommon::supportedlanguagecode($id);
+         if ($code ne '') {
+             $langchoices{$code} =  &Apache::loncommon::plainlanguagedescription($id);
+         }
+     }
+     my @spelllangs = ('none');
+     foreach my $code ('en','de','he','es','fr','pt','tr') {
+         push(@spelllangs,[$code,$langchoices{$code}]);
+     }
+     return \@spelllangs;
+ }
+ sub edit_mathresponse_button {
+     my ($field) = @_;
+     my $eqneditor = 'lcmath';
+     if ($env{'browser.type'} eq 'safari') {
+         if ($env{'browser.os'} eq 'mac') {
+             my ($prefix,$version) = ($env{'browser.version'} =~ /^(\d*)(\d{3})\./);
+             if ($env{'browser.mobile'}) {
+                 if (($version < 531) || (($prefix eq '') && ($version < 533))) {
+                     $eqneditor = '';
+                 }
+             } elsif ($version < 533) {
+                 $eqneditor = 'dragmath';
+             }
+         } elsif ($env{'browser.os'} eq 'win') {
+             if ($env{'browser.version'} < 533) {
+                 $eqneditor = 'dragmath';
+             }
+         }
+     } elsif ($env{'browser.type'} eq 'explorer') {
+         if ($env{'browser.version'} < 9) {
+             $eqneditor = 'dragmath';
+         }
+     } elsif ($env{'browser.type'} eq 'mozilla') {
+         if ($env{'browser.version'} < 5) {
+             $eqneditor = 'dragmath';
+         } else {
+             if ($env{'browser.info'} =~ /^firefox\-([\d\.]+)/) {
+                 my $firefox = $1;
+                 if ($firefox < 4) {
+                     $eqneditor = 'dragmath';
+                 }
+             }
+         }
+     } elsif ($env{'browser.type'} eq 'chrome') {
+         if ($env{'browser.version'} < 5) {
+             $eqneditor = 'dragmath';
+         }
+     } elsif ($env{'browser.type'} eq 'opera') {
+         if ($env{'browser.version'} < 12) {
+             $eqneditor = 'dragmath';
+         }
+     }
+     if ($eqneditor eq 'lcmath') {
+         if (($env{'request.course.id'}) && ($env{'request.state'} ne 'construct')) {
+             if (exists($env{'course.'.$env{'request.course.id'}.'.uselcmath'})) {
+                 if ($env{'course.'.$env{'request.course.id'}.'.uselcmath'} eq '0') {
+                     $eqneditor = 'dragmath';
+                 }
+             } else {
+                 my %domdefs = &Apache::lonnet::get_domain_defaults($env{'course.'.$env{'request.course.id'}.'.domain'});
+                 if ($domdefs{'uselcmath'} eq '0') {
+                     $eqneditor = 'dragmath';
+                 }
+             }
+         } else {
+             my %domdefs = &Apache::lonnet::get_domain_defaults($env{'course.'.$env{'request.course.id'}.'.domain'});
+             if ($domdefs{'uselcmath'} eq '0') {
+                 $eqneditor = 'dragmath';
+             }
+         }
+     }
+     if ($eqneditor eq 'dragmath') {
+         # DragMath applet
+         my $button=&mt('Edit Answer');
+ #       my $helplink=&Apache::loncommon::help_open_topic('Formula_Editor');
+         my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'};
+         return(<<ENDFORMULABUTTON);
+ <script type="text/javascript" language="JavaScript">
+ function LC_mathedit_${field} (LCtextline) {
+     thenumber = LCtextline;
+     var thedata = '';
+     if (document.getElementById(LCtextline)) {
+         thedata = document.getElementById(LCtextline).value;
+     }
+     newwin = window.open("/adm/dragmath/MaximaPopup.html","","width=565,height=400,resizable");
+ }
+ </script>
+ <a href="javascript:LC_mathedit_${field}('${field}');void(0);"><img class="stift" src="$iconpath/stift.gif" alt="$button" title="$button" /></a>
+ ENDFORMULABUTTON
+     } elsif ($eqneditor eq 'lcmath') {
+         # LON-CAPA math equation editor
+         my $mathjaxjs;
+         unless (lc(&Apache::lontexconvert::tex_engine()) eq 'mathjax') {
+             $mathjaxjs = <<"MATHJAX_SCRIPT";
+ var mathjaxscript = document.createElement("script");
+     mathjaxscript.type = "text/javascript";
+     mathjaxscript.src = "/adm/MathJax/MathJax.js?config=TeX-AMS-MML_HTMLorMML";
+     document.body.appendChild(mathjaxscript);
+ MATHJAX_SCRIPT
+         }
+         return(<<EQ_EDITOR_SCRIPT);
+ <script type="text/javascript">
+   var LCmathField = document.getElementById('${field}');
+   LCmathField.className += ' math'; // note the space
+   LCmathField.setAttribute('data-implicit_operators', 'true');
+   var LCMATH_started;
+   if (typeof LCMATH_started === 'undefined') {
+     $mathjaxjs
+     LCMATH_started = true;
+     var script = document.createElement("script");
+     script.type = "text/javascript";
+     script.src = "/adm/LC_math_editor/LC_math_editor.min.js";
+     document.body.appendChild(script);
+     window.addEventListener('load', function(e) {
+         LCMATH.initEditors();
+     }, false);
+   }
+ </script>
+ EQ_EDITOR_SCRIPT
+     }
+ }
 ;
  __END__
+ =pod
+ =back
+ =cut

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

Removed from v.1.190
changed lines
	Added in v.1.355