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Diff for /loncom/homework/inputtags.pm between versions 1.13 and 1.248.2.2

-version 1.13, 2000/12/08 20:53:45
+version 1.248.2.2, 2008/12/10 22:54:12
  Line 1
  # The LearningOnline Network with CAPA
  # 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;
+ use HTML::Entities();
  use strict;
+ use Apache::loncommon;
+ use Apache::lonlocal;
+ use Apache::lonnet;
+ 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.
+ #  %Apache::inputtags::submission_display
+ #                                   - <*response> tags store improved display
+ #                                     of submission strings for display by part
+ #                                     end.
  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;
+     $Apache::inputtags::response_with_no_part=0;
- }
+     %Apache::inputtags::answertxt=();
+     %Apache::inputtags::submission_display=();
- sub end_textarea {
+ }
-   my ($target,$token,$parstack,$parser,$safeeval)=@_;
-   if ($target eq 'web') {
+ sub check_for_duplicate_ids {
-     return "</textarea>";
+     my %check;
-   }
+     foreach my $id (@Apache::inputtags::partlist,
-   return '';
+ 		    @Apache::inputtags::responselist,
+ 		    @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 $id = &Apache::lonxml::get_id($parstack,$safeeval);
+     push (@Apache::inputtags::input,$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--;
+ 	my $partid=$Apache::inputtags::part;
+ 	my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$resid.submission"},'<>&"');
+ 	if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
+ 	    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,$style);
+ 	    }
+ 	} else {
+ 	    #show past answer in the essayresponse case
+ 	    if ($oldresponse =~ /\S/
+ 		&& &Apache::londefdef::is_inside_of($tagstack,
+ 						    'essayresponse') ) {
+ 		$result='<table class="LC_pastsubmission"><tr><td>'.
+ 		    $oldresponse.'</td></tr></table>';
+ 	    }
+ 	    #get rid of any startup text
+ 	    &Apache::lonxml::get_all_text("/textfield",$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 {
-   my ($target,$token,$parstack,$parser,$safeeval)=@_;
+     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
-   my $result = "";
+     my $result = "";
-   if ($target eq 'web') {
+     my $input_id = &start_input($parstack,$safeeval);
-     my $args ='';
+     if ($target eq 'web') {
-     if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
+ 	$Apache::lonxml::evaluate--;
-     my $size = &Apache::run::run("{$args;".'return $size}',$safeeval);
+ 	my $partid=$Apache::inputtags::part;
-     if ($size eq '') { $size=20; }
+ 	my $id=$Apache::inputtags::response[-1];
-     $result= '<input type="text" name="HWVAL'.$Apache::inputtags::curvalue.'" value="" size="'.$size.'">';
+ 	if (!&Apache::response::show_answer()) {
-   }
+ 	    my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);
-   return $result;
+ 	    my $maxlength;
+ 	    if ($size eq '') { $size=20; } else {
+ 		if ($size < 20) {
+ 		    $maxlength = ' maxlength="'.$size.'"';
+ 		}
+ 	    }
+ 	    my $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);
+ 		$result='';
+ 		if ($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";
+ 		}
+ 		$result.= '<input onkeydown="javascript:setSubmittedPart(\''.$partid.'\');" type="text" '.$readonly.' name="'.$name.'" value="'.
+ 		    $oldresponse.'" size="'.$size.'"'.$maxlength.' />';
+ 	    }
+ 	    if ($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.
+ 	    my $count = scalar(@Apache::inputtags::inputlist)-1;
+ 	    $result='<b>'.$Apache::inputtags::answertxt{$id}[$count].'</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';}
+ 	if ($env{'form.pdfFormFields'} eq 'yes') {
+             my $fieldname = $env{'request.symb'}.
+                                  '&part_'. $Apache::inputtags::part.
+                                  '&textresponse'.
+                                  '&HWVAL_' . $Apache::inputtags::response['-1'];
+             $result="\n\\\\\n".'\textField{'.$fieldname.'}{'.$size.'}{12 bp}';
+         } else {
+             $result='\framebox['.$size.'][s]{\tiny\strut}';
+         }
+     } elsif ($target eq 'tex'
+ 	     && $Apache::lonhomework::type eq 'exam'
+ 	     && &needs_exam_box($tagstack)) {
+ 	$result.=&exam_box($target);
+     }
+     return $result;
  }
  sub end_textline {
-   my ($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'); }
+     &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 = $Apache::lonhomework::history{"resource.$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="'.
+ 		    $oldresponse.'" />';
+ 	    }
+ 	}
+     } elsif ($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'); }
+     &end_input();
+     return "";
  }
- #answergroup is deprecated
+ # $part -> partid
- #sub start_answergroup {
+ # $id -> responseid
- #  my ($target,$token,$parstack,$parser,$safeeval)=@_;
+ # $uploadefiletypes -> comma seperated list of extensions allowed or * for any
- #  my $args ='';
+ # $which -> 'uploadonly'  -> only newly uploaded files
- #  if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
+ #           'portfolioonly' -> only allow files from portfolio
- #  my $id = &Apache::run::run("{$args;".'return $id}',$safeeval);
+ #           'both' -> allow files from either location
- #  push (@Apache::inputtags::answergroup,$id);
+ # $extratext -> additional text to go between the link and the input box
- #  if ($target == 'web') {
+ # $maxfilesize -> maximum cumulative filesize for submitted files (in MB).
- #
+ # returns a table row <tr>
- #  }
+ sub file_selector {
- #  return '';
+     my ($part,$id,$uploadedfiletypes,$which,$extratext,$maxfilesize)=@_;
- #}
+     if (!$uploadedfiletypes) { return ''; }
- #
- #sub end_answergroup {
+     my $jspart=$part;
- #  my ($target,$token,$parstack,$parser,$safeeval)=@_;
+     $jspart=~s/\./_/g;
- #  return ''; # <answergroup> has ben deprecated
- #  my $args ='';
+     my $result;
- #  if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
- #  my $id = &Apache::run::run("{$args;".'return $id}',$safeeval);
+     $result.='<tr><td>';
- #  push (@Apache::inputtags::answergroup,$id);
+     if (($uploadedfiletypes ne '*') || ($maxfilesize)) {
- #  my $result='';
+         if ($uploadedfiletypes ne '*') {
- #  my $button='<input type="submit" name="submit" value="Submit All Answers">';
+             $result.=
- #  my $showbutton='1';
+                 &mt('Allowed filetypes: [_1]','<b>'.$uploadedfiletypes.'</b>').'<br />';
- #  my $usedtry='1';
+         }
- #  my $response='';
+         if ($maxfilesize) {
- #  if ( $target == 'web' ) {
+             $result.=&mt('Combined size of files not to exceed: [_1] MB[_2].',
- #    if ( defined $ENV{'form.submit'}) {
+                          '<b>'.$maxfilesize.'</b>').'<br />';
- #    }
+         }
- #    if ($showbutton > 0) { $result.=$button }
+         $result .= '<br />';
- #  }
+     }
- #  pop @Apache::inputtags::answergroup;
+     if ($which eq 'uploadonly' || $which eq 'both') {
- #  return $result;
+ 	$result.=&mt('Submit a file: (only one file can be uploaded)').
- #}
+ 	    ' <br /><input type="file" size="50" name="HWFILE'.
+ 	    $jspart.'_'.$id.'" /><br />';
+ 	$result .= &show_past_file_submission($part,$id);
- sub start_datasubmission {
+     }
- }
+     if ( $which eq 'both') {
+ 	$result.='<br />'.'<strong>'.&mt('OR:').'</strong><br />';
- sub end_datasubmission {
+     }
-   my ($target,$token,$parstack,$parser,$safeeval)=@_;
+     if ($which eq 'portfolioonly' || $which eq 'both') {
-   if ( $target == 'web' ) {
+ 	$result.=$extratext.'<a href='."'".'javascript:void(window.open("/adm/portfolio?mode=selectfile&amp;fieldname='.$env{'form.request.prefix'}.'HWPORT'.$jspart.'_'.$id.'","cat","height=600,width=800,scrollbars=1,resizable=1,menubar=2,location=1"))'."'".'>'.
-     return '<input type="submit" name="submit" value="Submit All Data">';
+ 	    &mt('Select Portfolio Files').'</a><br />'.
-   }
+ 	    '<input type="text" size="50" name="HWPORT'.$jspart.'_'.$id.'" value="" />'.
-   return '';
+ 	    '<br />';
+ 	$result .= &show_past_portfile_submission($part,$id);
+     }
+     $result.='</td></tr>';
+     return $result;
+ }
+ sub show_past_file_submission {
+     my ($part,$id) = @_;
+     my $uploadedfile= &HTML::Entities::encode($Apache::lonhomework::history{"resource.$part.$id.uploadedfile"},'<>&"');
+     return 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>';
+     return &mt('Currently submitted: <tt>[_1]</tt>',$curfile);
+ }
+ sub show_past_portfile_submission {
+     my ($part,$id) = @_;
+     if ($Apache::lonhomework::history{"resource.$part.$id.portfiles"}!~/[^\s]/){
+ 	return;
+     }
+     my (@file_list,@bad_file_list);
+     foreach my $file (split(/\s*,\s*/,&unescape($Apache::lonhomework::history{"resource.$part.$id.portfiles"}))) {
+ 	my (undef,undef,$domain,$user)=&Apache::lonnet::whichuser();
+ 	my $url="/uploaded/$domain/$user/portfolio$file";
+ 	my $icon=&Apache::loncommon::icon($url);
+ 	push(@file_list,'<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>');
+ 	}
+     }
+     my $files = '<span class="LC_filename">'.
+ 	join('</span>, <span class="LC_filename">',@file_list).
+ 	'</span>';
+     my $result = &mt("Portfolio files previously selected: [_1]",$files);
+     if (@bad_file_list) {
+ 	my $bad_files = '<span class="LC_filename">'.
+ 	    join('</span>, <span class="LC_filename">',@bad_file_list).
+ 	    '</span>';
+ 	$result.='<br />'.&mt('<span class="LC_error">These file(s) don\'t exist:</span> [_1]',$bad_files);
+     }
+     return $result;
+ }
+ sub valid_award {
+     my ($award) =@_;
+     foreach my $possibleaward ('EXTRA_ANSWER','MISSING_ANSWER', 'ERROR',
+ 			       'NO_RESPONSE',
+ 			       'TOO_LONG', 'UNIT_INVALID_INSTRUCTOR',
+ 			       'UNIT_INVALID_STUDENT', 'UNIT_IRRECONCIBLE',
+ 			       'UNIT_FAIL', 'NO_UNIT',
+ 			       'UNIT_NOTNEEDED', 'WANTED_NUMERIC',
+ 			       'BAD_FORMULA', 'INTERNAL_ERROR', 'SIG_FAIL', 'INCORRECT',
+ 			       'MISORDERED_RANK', 'INVALID_FILETYPE',
+                                'EXCESS_FILESIZE', 'DRAFT',
+ 			       'SUBMITTED', 'ASSIGNED_SCORE',
+ 			       'APPROX_ANS', 'EXACT_ANS','COMMA_FAIL') {
+ 	if ($award eq $possibleaward) { return 1; }
+     }
+     return 0;
+ }
+ {
+     my @awards = ('EXTRA_ANSWER', 'MISSING_ANSWER', 'ERROR', 'NO_RESPONSE',
+ 		  'TOO_LONG',
+ 		  'UNIT_INVALID_INSTRUCTOR', 'UNIT_INVALID_STUDENT',
+ 		  'UNIT_IRRECONCIBLE', 'UNIT_FAIL', 'NO_UNIT',
+ 		  'UNIT_NOTNEEDED', 'WANTED_NUMERIC', 'BAD_FORMULA', 'INTERNAL_ERROR',
+ 		  'COMMA_FAIL', 'SIG_FAIL', 'INCORRECT', 'MISORDERED_RANK',
+ 		  'INVALID_FILETYPE', 'EXCESS_FILESIZE', 'DRAFT', 'SUBMITTED',
+                   '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|ASSIGNED_SCORE|INCORRECT)/) {
+ 	return 1;
+     }
+     return 0;
  }
  sub finalizeawards {
-   my $result='';
+     my ($awardref,$msgref,$nameref,$reverse,$final_scantron)=@_;
-   my $award;
+     my $result;
-   if ($#_ == '-1') { $result = "NO_RESPONSE"; }
+     if ($#$awardref == -1) { $result = "NO_RESPONSE"; }
-   foreach $award (@_) { if ($award eq '') {$result='MISSING_ANSWER'; last;}}
+     if ($result eq '' ) {
-   if ($result eq '' ) {
+ 	my $blankcount;
-     foreach $award (@_) {
+ 	foreach my $award (@$awardref) {
-       if ($award eq 'UNIT_FAIL' ||
+ 	    if ($award eq '') {
- 	  $award eq 'NO_UNIT' ||
+ 		$result='MISSING_ANSWER';
- 	  $award eq 'UNIT_NOTNEEDED') {
+ 		$blankcount++;
- 	$result=$award; last;
+ 	    }
-       }
+ 	}
-     }
+ 	if ($blankcount == ($#$awardref + 1)) {
-   }
+ 	    return ('NO_RESPONSE');
-   if ($result eq '' ) {
+ 	}
-     foreach $award (@_) {
+     }
-       if ($award eq 'WANTED_NUMERIC' ||
- 	  $award eq 'BAD_FORMULA') {$result=$award; last;}
+     if ($Apache::lonxml::internal_error) { $result='INTERNAL_ERROR'; }
-     }
-   }
+     if (!$final_scantron && defined($result)) { return ($result); }
-   if ($result eq '' ) {
-     foreach $award (@_) { if ($award eq 'SIG_FAIL') {$result=$award; last;} }
+     # if in scantron mode, if the award for any response is
-   }
+     # assigned score, then the part gets an assigned score
-   if ($result eq '' ) {
+     if ($final_scantron
-     foreach $award (@_) { if ($award eq 'INCORRECT') {$result=$award; last;} }
+ 	&& grep {$_ eq 'ASSIGNED_SCORE'} (@$awardref)) {
-   }
+ 	return ('ASSIGNED_SCORE');
-   if ($result eq '' ) {
+     }
-     foreach $award (@_) { if ($award eq 'APPROX_ANS') {$result=$award; last;} }
-   }
+     # if in scantron mode, if the award for any response is
-   if ($result eq '' ) { $result='EXACT_ANS'; }
+     # correct and there are non-correct responses,
-   return $result
+     # then the part gets an assigned score
+     if ($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 $best = $max;
+     my $j=0;
+     my $which;
+     foreach my $award (@$awardref) {
+ 	if ($awards->{$award} < $best) {
+ 	    $best  = $awards->{$award};
+ 	    $which = $j;
+ 	}
+ 	$j++;
+     }
+     if (defined($which)) {
+ 	if (ref($nameref)) {
+ 	    return ($$awardref[$which],$$msgref[$which],$$nameref[$which]);
+ 	} else {
+ 	    return ($$awardref[$which],$$msgref[$which]);
+ 	}
+     }
+     return ('ERROR',undef);
+ }
  }
  sub decideoutput {
-   my ($award)=@_;
+     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 $css_class='orange';
-     $button=0;
+     my $added_computer_text=0;
-   } elsif ($award eq 'NO_RESPONSE') {
+     my %possible_class =
-     $message = '';
+ 	( 'correct'         => 'LC_answer_correct',
-     $button=1;
+ 	  'charged_try'     => 'LC_answer_charged_try',
-   } elsif ($award eq 'WANTED_NUMERIC') {
+ 	  'not_charged_try' => 'LC_answer_not_charged_try',
-     $message = "This question expects a numeric answer";
+ 	  'no_grade'        => 'LC_answer_no_grade',
-     $button=1;
+ 	  'no_message'      => 'LC_no_message',
-   } elsif ($award eq 'SIG_FAIL') {
+ 	  );
-     $message = "Please adjust significant figures, you provided %s significant figures";
-     $button=1;
+     my $part = $Apache::inputtags::part;
-   } elsif ($award eq 'UNIT_FAIL') {
+     my $tohandgrade = &Apache::lonnet::EXT("resource.$part.handgrade");
-     $message = "Units incorrect, Computer reads units as %s";
+     my $handgrade = ('yes' eq lc($tohandgrade));
-     $button=1;
-   } elsif ($award eq 'UNIT_NOTNEEDED') {
+     my $computer = ($handgrade)? ''
-     $message = "Only a number required, Computer reads units of %s";
+ 	                       : " ".&mt("Computer's answer now shown above.");
-     $button=1;
+     &Apache::lonxml::debug("handgrade has :$handgrade:");
-   } elsif ($award eq 'NO_UNIT') {
-     $message = "Units required";
+     if ($previous) { $previousmsg=&mt('You have entered that answer before'); }
-     $button=1;
-   } elsif ($award eq 'BAD_FORMULA') {
+     if ($solved =~ /^correct/) {
-     $message = "Unable to understand formula";
+         $css_class=$possible_class{'correct'};
-     $button=1;
+ 	$message=&mt('You are correct.');
-   } elsif ($award eq 'INCORRECT') {
+ 	if ($awarded < 1 && $awarded > 0) {
-     $message = "Incorrect";
+ 	    $message=&mt('You are partially correct.');
-     $button=1;
+ 	    $css_class=$possible_class{'not_charged_try'};
-   } else {
+ 	} elsif ($awarded < 1) {
-     $message = "Unknown message: $award";
+ 	    $message=&mt('Incorrect.');
-     $button=1;
+ 	    $css_class=$possible_class{'charged_try'};
-   }
+ 	}
-   return ($button,$message);
+ 	if ($env{'request.filename'} =~
+ 	    m|/res/lib/templates/examupload.problem$|) {
+ 	    $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;
+ 	    }
+ 	    $added_computer_text=1;
+ 	    if ($awarded > 0) {
+ 		my ($symb) = &Apache::lonnet::whichuser();
+ 		if (($symb ne '')
+ 		    &&
+ 		    ($env{'course.'.$env{'request.course.id'}.
+ 			      '.disable_receipt_display'} ne 'yes') &&
+                     ($Apache::lonhomework::type ne 'practice')) {
+ 		    $message.=(($target eq 'web')?'<br />':' ').
+ 			&mt('Your receipt is [_1]',
+ 			    (&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>";
+ 	}
+ 	$css_class=$possible_class{'charged_try'};
+ 	$button=0;
+ 	$previousmsg='';
+     } elsif ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS' ) {
+ 	if ($solved =~ /^incorrect/ || $solved eq '') {
+ 	    $message = &mt("Incorrect").".";
+ 	    $css_class=$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;
+ 	    }
+ 	    $added_computer_text=1;
+ 	    if  ($awarded > 0
+ 		 && $env{'course.'.
+ 			     $env{'request.course.id'}.
+ 			     '.disable_receipt_display'} ne 'yes') {
+ 		$message.=(($target eq 'web')?'<br />':' ').
+ 		    &mt('Your receipt is [_1]',
+ 			(&Apache::lonnet::receipt($Apache::inputtags::part).
+ 			 (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'')));
+ 	    }
+ 	    $css_class=$possible_class{'correct'};
+ 	    $button=0;
+ 	    $previousmsg='';
+ 	}
+     } elsif ($award eq 'NO_RESPONSE') {
+ 	$message = '';
+ 	$css_class=$possible_class{'no_feedback'};
+ 	$button=1;
+     } elsif ($award eq 'EXTRA_ANSWER') {
+ 	$message = &mt('Some extra items were submitted.');
+ 	$css_class=$possible_class{'not_charged_try'};
+ 	$button = 1;
+     } elsif ($award eq 'MISSING_ANSWER') {
+ 	$message = &mt('Some items were not submitted.');
+         if ($target ne 'tex') {
+            $message .= &Apache::loncommon::help_open_topic('Some_Items_Were_Not_Submitted');
+         }
+ 	$css_class=$possible_class{'not_charged_try'};
+ 	$button = 1;
+     } elsif ($award eq 'ERROR') {
+ 	$message = &mt('An error occurred while grading your answer.');
+ 	$css_class=$possible_class{'not_charged_try'};
+ 	$button = 1;
+     } elsif ($award eq 'TOO_LONG') {
+ 	$message = &mt("The submitted answer was too long.");
+ 	$css_class=$possible_class{'not_charged_try'};
+ 	$button=1;
+     } elsif ($award eq 'WANTED_NUMERIC') {
+ 	$message = &mt("This question expects a numeric answer.");
+ 	$css_class=$possible_class{'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 [_1]',&Apache::loncommon::help_open_topic('Ranking_Problems',&mt('help on ranking problems')));
+         }
+ 	$css_class=$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 'INVALID_FILETYPE') {
+ 	$message = &mt('Submission won\'t be graded. The type of file submitted is not allowed.');
+ 	$css_class=$possible_class{'not_charged_try'};
+ 	$button=1;
+     } elsif ($award eq 'SIG_FAIL') {
+ 	my ($used,$min,$max)=split(':',$awardmsg);
+ 	my $word = ($used < $min) ? 'more' : 'fewer';
+ 	$message = &mt("Submission not graded.  Use $word digits.",$used);
+ 	$css_class=$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');}
+ 	$css_class=$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');}
+ 	$css_class=$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');}
+ 	$css_class=$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));
+ 	$css_class=$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')};
+ 	$css_class=$possible_class{'not_charged_try'};
+ 	$button=1;
+     } elsif ($award eq 'COMMA_FAIL') {
+ 	$message = &mt("Proper comma separation is required").'.';
+ 	$css_class=$possible_class{'not_charged_try'};
+ 	$button=1;
+     } elsif ($award eq 'BAD_FORMULA') {
+ 	$message = &mt("Unable to understand formula").'.';
+         if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Formula_Answers')};
+ 	$css_class=$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").'.';
+ 	$css_class=$possible_class{'charged_try'};
+ 	$button=1;
+     } elsif ($award eq 'SUBMITTED') {
+ 	$message = &mt("Your submission has been recorded.");
+ 	$css_class=$possible_class{'no_grade'};
+ 	$button=1;
+     } elsif ($award eq 'DRAFT') {
+ 	$message = &mt("A draft copy has been saved.");
+ 	$css_class=$possible_class{'not_charged_try'};
+ 	$button=1;
+     } elsif ($award eq 'ASSIGNED_SCORE') {
+ 	$message = &mt("A score has been assigned.");
+ 	$css_class=$possible_class{'correct'};
+ 	$button=0;
+     } elsif ($award eq '') {
+ 	if ($handgrade && $Apache::inputtags::status[-1] eq 'SHOW_ANSWER') {
+ 	    $message = &mt("Nothing submitted.");
+ 	    $css_class=$possible_class{'charged_try'};
+ 	} else {
+ 	    $css_class=$possible_class{'not_charged_try'};
+ 	}
+ 	$button=1;
+     } else {
+ 	$message = &mt("Unknown message").": $award";
+ 	$button=1;
+     }
+     my (undef,undef,$domain,$user)=&Apache::lonnet::whichuser();
+     foreach my $resid(@Apache::inputtags::response){
+         if ($Apache::lonhomework::history{"resource.$part.$resid.handback"}) {
+ 	    $message.='<br />';
+ 	    my @files = split(/\s*,\s*/,
+ 			      $Apache::lonhomework::history{"resource.$part.$resid.handback"});
+ 	    my $file_msg;
+ 	    foreach my $file (@files) {
+ 		$file_msg.= '<br /><a href="/uploaded/'."$domain/$user".'/'.$file.'">'.$file.'</a>';
+ 	    }
+ 	    $message .= &mt('Returned file(s): [_1]',$file_msg);
+ 	}
+     }
+     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.");
+ 	$css_class=$possible_class{'no_grade'};
+ 	$button=1;
+     }
+     if ($Apache::inputtags::status[-1] eq 'SHOW_ANSWER' &&
+ 	!$added_computer_text && $target ne 'tex') {
+ 	$message.= $computer;
+ 	$added_computer_text=1;
+     }
+     if ($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,$previousmsg);
+ }
+ sub markup_unit {
+     my ($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 {
-   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
+ 	      || &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
+ 	# 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 $res (@Apache::inputtags::response) {
+ 		if (defined($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"}/=
+ 		    $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 (&Apache::lonhomework::hide_problem_status()
+ 		|| $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 (&Apache::lonhomework::show_no_problem_status()
+ 		|| $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"} = $msg;
+ 	}
+ 	# did either of the overall awards chage? If so ignore the
+ 	# previous check
+ 	if (($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 ( $previously_used eq 'PREVIOUSLY_USED') {
+ 		if (&Apache::lonhomework::show_problem_status()) {
+ 		    delete($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 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,$which);
  }
  sub grade {
-   my ($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) =
- 	  &Apache::lonxml::debug("skipping $value from $response for $id");
+ 	    &finalizeawards(\@awards,\@msgs,undef,undef,
- 	}
+ 			    $Apache::lonhomework::scantronmode);
-       }
+ 	my $previously_used;
-       my $finalaward = &finalizeawards(@awards);
+ 	if ( $#Apache::inputtags::previous eq $#awards ) {
-       &Apache::lonxml::debug("final award $finalaward");
+ 	    my ($match) =
-       &setgradedata($finalaward,$id);
+ 		&previous_match(\@Apache::inputtags::previous_version,
+ 				scalar(@Apache::inputtags::response));
+ 	    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 $result;
+ }
+ sub get_grade_messages {
+     my ($id,$prefix,$target,$status) = @_;
+     my ($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,
+ 			  $target);
+ 	if ($target eq 'tex') {
+ 	    $message='\vskip 2 mm '.$message.' ';
+ 	} else {
+ 	    $message="<td class=\"$css_class\">$message</td>";
+ 	    if ($previousmsg) {
+ 		$previousmsg="<td class=\"LC_answer_previous\">$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=&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'};
+ 		}
+ 	    }
+ 	    $trystr.="</nobr></td>";
+ 	}
+     }
+     if ($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') {
+ 	    $latemessage='<td class="LC_answer_late">'.$latemessage.'</td>';
+ 	}
+     }
+     return ($previousmsg,$latemessage,$message,$trystr,$showbutton);
  }
  sub gradestatus {
-   my ($id) = @_;
+     my ($id,$target,$no_previous) = @_;
-   my $showbutton = 1;
+     my $showbutton = 1;
-   my $message = '';
+     my $message = '';
-   my $award = $Apache::lonhomework::history{"resource.award.$id"};
+     my $latemessage = '';
-   &Apache::lonxml::debug("Found Award |$award|");
+     my $trystr='';
-   if ( $award ne '' ) {
+     my $button='';
-     &Apache::lonxml::debug('Getting message');
+     my $previousmsg='';
-     ($showbutton,$message) = &decideoutput($award);
-   }
+     my $status = $Apache::inputtags::status['-1'];
-   my $button='';
+     &Apache::lonxml::debug("gradestatus has :$status:");
-   my $tries = $Apache::lonhomework::history{"resource.tries.$id"};
+     if ( $status ne 'CLOSED'
-   my $maxtries = $Apache::lonhomework::history{"resource.maxtries.$id"};
+ 	 && $status ne 'UNAVAILABLE'
-   if ( $tries eq '' ) { $tries = '0'; }
+ 	 && $status ne 'INVALID_ACCESS'
-   if ( $maxtries eq '' ) { $maxtries = '2'; }
+ 	 && $status ne 'NEEDS_CHECKIN'
-   my $trystr='';
+ 	 && $status ne 'NOT_IN_A_SLOT') {
-   if ( $showbutton ) {
-     $trystr = "<br></br>Tries $tries/$maxtries";
+ 	($previousmsg,$latemessage,$message,$trystr) =
-   }
+ 	    &get_grade_messages($id,"resource.$id",$target,$status,
-   if ( $tries >= $maxtries ) { $showbutton = 0; }
+ 				$showbutton);
-   if ( $showbutton ) {
+ 	if ( $status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') {
-     $button = '<input type="submit" name="submit" value="Submit All Answers"><br></br>';
+ 	    $showbutton = 0;
-   }
+ 	}
-   return $button.$message.$trystr;
+ 	if ( $status eq 'SHOW_ANSWER') {
+ 	    undef($previousmsg);
+ 	}
+ 	if ( $showbutton ) {
+ 	    if ($target ne 'tex') {
+ 		$button =
+ 		    '<input
+                           onmouseup="javascript:setSubmittedPart(\''.$id.'\')"
+                            onsubmit="javascript:setSubmittedPart(\''.$id.'\')"
+                         type="submit" name="submit_'.$id.'"
+                          value="'.&mt('Submit Answer').'" />';
+ 	    }
+ 	}
+     }
+     my $output= $previousmsg.$latemessage.$message.$trystr;
+     if ($output =~ /^\s*$/) {
+ 	return $button;
+     } else {
+ 	if ($target eq 'tex') {
+ 	    return $button.' \vskip 0 mm '.$output.' ';
+ 	} else {
+ 	    $output =
+ 		'<table><tr><td>'.$button.'</td>'.$output;
+ 	    if (!$no_previous) {
+ 		$output.='<td>'.&previous_tries($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;
+     foreach my $i (1..$Apache::lonhomework::history{'version'}) {
+ 	my $prefix = $i.":resource.$id";
+ 	next if (!exists($Apache::lonhomework::history{"$prefix.award"}));
+ 	$count++;
+ 	$count_lookup{$i} = $count;
+ 	my ($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');
+ 		$message =~ s{(<td.*?>)(.*?)(</td>)}
+                              {$1 <strong>$txt_correct</strong>. $3}s;
+ 	    }
+             my $trystr = "(".&mt('Try [_1]',$Apache::lonhomework::history{"$prefix.tries"}).")";
+ 	    $message =~ s{(</td>)}{ $trystr $1};
+ 	}
+ 	my ($class) = ($message =~ m{<td.*class="([^"]*)"}); #"
+ 	$message =~ s{(<td.*?>)}{<td>};
+ 	$output.='<tr class="'.$class.'">';
+ 	$output.='<td align="center">'.$count.'</td>';
+ 	$output.=$message;
+ 	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"};
+ 		}
+ 		$output.='<td>'.$submission.'</td>';
+ 	    } else {
+ 		$output.='<td></td>';
+ 	    }
+ 	}
+ 	$output.=&Apache::loncommon::end_data_table_row()."\n";
+     }
+     return if ($output eq '');
+     my $headers =
+ 	'<tr>'.'<th>'.&mt('Submission #').'</th><th>'.&mt('Try').
+ 	'</th><th colspan="'.scalar(@Apache::inputtags::response).'">'.
+ 	&mt('Submitted Answer').'</th>';
+     $output ='<table class="LC_prior_tries">'.$headers.$output.'</table>';
+     #return $output;
+     $output = &Apache::loncommon::js_ready($output);
+     $output.='<br /><form action=""><center><input type="button" name="close" value="'.&mt('Close Window').'" onClick="window.close()" /></center></form>';
+     my $windowopen=&Apache::lonhtmlcommon::javascript_docopen();
+     my $start_page =
+ 	&Apache::loncommon::start_page('Previous Tries', undef,
+ 				       {'only_body'      => 1,
+ 					'bgcolor'        => '#FFFFFF',
+ 					'js_ready'       => 1,
+ 				        'inherit_jsmath' => 1, });
+     my $end_page =
+ 	&Apache::loncommon::end_page({'js_ready' => 1,});
+     my $prefix = $env{'form.request.prefix'};
+     $prefix =~ tr{.}{_};
+     my $function_name = "LONCAPA_previous_tries_".$prefix.
+ 	$Apache::lonxml::curdepth.'_'.$env{'form.counter'};
+     my $result ="<script type=\"text/javascript\">
+ // <![CDATA[
+     function $function_name() {newWindow=open('','new_W','width=500,height=500,scrollbars=1,resizable=yes');newWindow.$windowopen;newWindow.document.writeln('$start_page $output $end_page');newWindow.document.close();newWindow.focus()}
+ // ]]>
+ </script><a href=\"javascript:$function_name();void(0);\">".&mt("Previous Tries")."</a><br />";
+     #use Data::Dumper;
+     #&Apache::lonnet::logthis(&Dumper(\%Apache::inputtags::submission_display));
+     return $result;
+ }
 ;
  __END__

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Removed from v.1.13
changed lines
	Added in v.1.248.2.2