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Diff for /loncom/homework/inputtags.pm between versions 1.104 and 1.221

version 1.104, 2003/06/07 03:57:28 version 1.221, 2007/04/16 22:50:41
Line 24 Line 24
 # /home/httpd/html/adm/gpl.txt  # /home/httpd/html/adm/gpl.txt
 #  #
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  
 # 2/19 Guy   
   
 package Apache::inputtags;  package Apache::inputtags;
 use HTML::Entities();  use HTML::Entities();
 use strict;  use strict;
 use Apache::loncommon;  use Apache::loncommon;
   use Apache::lonlocal;
   use Apache::lonnet;
   use lib '/home/httpd/lib/perl/';
   use LONCAPA;
    
   
 BEGIN {  BEGIN {
   &Apache::lonxml::register('Apache::inputtags',('hiddenline','textfield','textline'));      &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 {  sub initialize_inputtags {
   # list of current input ids      @Apache::inputtags::input=();
   @Apache::inputtags::input=();      @Apache::inputtags::inputlist=();
   # list of all input ids seen in this problem      @Apache::inputtags::response=();
   @Apache::inputtags::inputlist=();      @Apache::inputtags::responselist=();
   # list of all current response ids      @Apache::inputtags::hint=();
   @Apache::inputtags::response=();      @Apache::inputtags::hintlist=();
   # list of all response ids seen in this problem      @Apache::inputtags::previous=();
   @Apache::inputtags::responselist=();      @Apache::inputtags::previous_version=();
   # list of whether or not a specific response was previously used      $Apache::inputtags::part='';
   @Apache::inputtags::previous=();      @Apache::inputtags::partlist=();
   # submission it was used in      @Apache::inputtags::status=();
   @Apache::inputtags::previous_version=();      %Apache::inputtags::params=();
   # id of current part, 0 means that no part is current (inside <problem> only      @Apache::inputtags::import=();
   $Apache::inputtags::part='';      @Apache::inputtags::importlist=();
   # list of all part ids seen      $Apache::inputtags::response_with_no_part=0;
   @Apache::inputtags::partlist=();      %Apache::inputtags::answertxt=();
   # list of problem date statuses, the first element is for <problem>      %Apache::inputtags::submission_display=();
   # if there is a second element it is for the current <part>  
   @Apache::inputtags::status=();  
   # hash of defined params for the current response  
   %Apache::inputtags::params=();  
   # list of all ids, for <import>, these get join()ed and prepended  
   @Apache::inputtags::import=();  
   # list of all import ids seen  
   @Apache::inputtags::importlist=();  
 }  }
   
 sub check_for_duplicate_ids {  sub check_for_duplicate_ids {
     my %check;      my %check;
     foreach my $id (@Apache::inputtags::partlist,      foreach my $id (@Apache::inputtags::partlist,
     @Apache::inputtags::responselist,      @Apache::inputtags::responselist,
       @Apache::inputtags::hintlist,
     @Apache::inputtags::importlist) {      @Apache::inputtags::importlist) {
  $check{$id}++;   $check{$id}++;
     }      }
Line 84  sub check_for_duplicate_ids { Line 115  sub check_for_duplicate_ids {
 }  }
   
 sub start_input {  sub start_input {
   my ($parstack,$safeeval)=@_;      my ($parstack,$safeeval)=@_;
   my $id = &Apache::lonxml::get_param('id',$parstack,$safeeval);      my $id = &Apache::lonxml::get_param('id',$parstack,$safeeval);
   if ($id eq '') { $id = $Apache::lonxml::curdepth; }      if ($id eq '') { $id = $Apache::lonxml::curdepth; }
   push (@Apache::inputtags::input,$id);      push (@Apache::inputtags::input,$id);
   push (@Apache::inputtags::inputlist,$id);      push (@Apache::inputtags::inputlist,$id);
   return $id;      return $id;
 }  }
   
 sub end_input {  sub end_input {
   pop @Apache::inputtags::input;      pop @Apache::inputtags::input;
   return '';      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 {  sub start_textfield {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   my $result = "";      my $result = "";
   my $id = &start_input($parstack,$safeeval);      my $id = &start_input($parstack,$safeeval);
   my $resid=$Apache::inputtags::response[-1];      my $resid=$Apache::inputtags::response[-1];
   if ($target eq 'web') {      if ($target eq 'web') {
     $Apache::lonxml::evaluate--;   $Apache::lonxml::evaluate--;
     if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {  
  my $partid=$Apache::inputtags::part;   my $partid=$Apache::inputtags::part;
  my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$resid.submission"});   my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$resid.submission"},'<>&"');
  my $cols = &Apache::lonxml::get_param('cols',$parstack,$safeeval);   if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
  if ( $cols eq '') { $cols = 80; }      my $cols = &Apache::lonxml::get_param('cols',$parstack,$safeeval);
  my $rows = &Apache::lonxml::get_param('rows',$parstack,$safeeval);      if ( $cols eq '') { $cols = 80; }
  if ( $rows eq '') { $rows = 10; }      my $rows = &Apache::lonxml::get_param('rows',$parstack,$safeeval);
  $result= '<textarea name="HWVAL_'.$resid.'" '.      if ( $rows eq '') { $rows = 16; }
     "rows=\"$rows\" cols=\"$cols\">".$oldresponse;      my $addchars=&Apache::lonxml::get_param('addchars',$parstack,$safeeval);
  if ($oldresponse ne '') {      $result='';
     #get rid of any startup text if the user has already responded      if ($addchars) {
     &Apache::lonxml::get_all_text("/textfield",$parser);   $result.=&addchars('HWVAL_'.$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 ';
  }   }
     } else {  
  #right or wrong don't show it  
  #$result='<table border="1"><tr><td><i>'.$oldresponse.'</i></td></tr></table>';  
  $result='';  
  #get rid of any startup text  
  &Apache::lonxml::get_all_text("/textfield",$parser);  
     }  
   } elsif ($target eq 'grade') {  
     my $seedtext=&Apache::lonxml::get_all_text("/textfield",$parser);  
     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);  
     my $bodytext=&Apache::lonxml::get_all_text("/textfield",$parser);  
     $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');  
     if ($constructtag) {  
       $result = &Apache::edit::rebuild_tag($token);  
     } else {  
       $result=$token->[4];  
     }      }
     $result.=&Apache::edit::modifiedfield();      return $result;
   } 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 {  sub end_textfield {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   my $result;      my $result;
   if ($target eq 'web') {      if ($target eq 'web') {
     $Apache::lonxml::evaluate++;   $Apache::lonxml::evaluate++;
     if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {   if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
       return "</textarea>";      return "</textarea>";
     }   }
   } elsif ($target eq 'edit') {      } elsif ($target eq 'edit') {
     $result=&Apache::edit::end_table();   $result=&Apache::edit::end_table();
   }      }
   &end_input;      &end_input;
   return $result;      return $result;
   }
   
   sub exam_score_line {
       my ($target) = @_;
   
       my $result;
       if ($target eq 'tex') {
    my $repetition = &Apache::response::repetition();
    $result.='\begin{enumerate}';
    if ($env{'request.state'} eq "construct" ) {$result.='\item[\strut]';}
    foreach my $i (0..$repetition-1) {
       $result.='\item[\textbf{'.
    ($Apache::lonxml::counter+$i).
    '}.]\textit{Leave blank on scoring form}\vskip 0 mm';
    }
    $result.= '\end{enumerate}';
       }
   
       return $result;
   }
   
   sub exam_box {
       my ($target) = @_;
       my $result;
   
       if ($target eq 'tex') {
    $result .= '\fbox{\fbox{\parbox{\textwidth-5mm}{\strut\\\\\strut\\\\\strut\\\\\strut\\\\}}}';
    $result .= &exam_score_line($target);
       } elsif ($target eq 'web') {
    my $id=$Apache::inputtags::response[-1];
    $result.= '<br /><br />
                      <textarea name="HWVAL_'.$id.'" rows="4" cols="50">
                      </textarea> <br /><br />';
       }
       return $result;
   }
   
   sub needs_exam_box {
       my ($tagstack) = @_;
       my @tags = ('formularesponse',
    'stringresponse',
    'reactionresponse',
    'organicresponse',
    );
   
       foreach my $tag (@tags) {
    if (grep(/\Q$tag\E/,@$tagstack)) {
       return 1;
    }
       }
       return 0;
 }  }
   
 sub start_textline {  sub start_textline {
   my ($target,$token,$tagstack,$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);
     $Apache::lonxml::evaluate--;      if ($target eq 'web') {
     my $partid=$Apache::inputtags::part;   $Apache::lonxml::evaluate--;
     my $id=$Apache::inputtags::response[-1];   my $partid=$Apache::inputtags::part;
     if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {   my $id=$Apache::inputtags::response[-1];
       my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);   if (!&Apache::response::show_answer()) {
       my $maxlength;      my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);
       if ($size eq '') { $size=20; } else {      my $maxlength;
  if ($size < 20) { $maxlength=$size; }      if ($size eq '') { $size=20; } else {
       }   if ($size < 20) {
       my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"});      $maxlength = ' maxlength="'.$size.'"';
       if ($Apache::lonhomework::type ne 'exam') {   }
         $result= '<input type="text" name="HWVAL_'.$id.'" value="'.      }
     $oldresponse.'" size="'.$size.'" maxlength="'.$maxlength.'" />';      my $oldresponse = $Apache::lonhomework::history{"resource.$partid.$id.submission"};
       }      &Apache::lonxml::debug("oldresponse $oldresponse is ".ref($oldresponse));
     } else {  
       #right or wrong don't show what was last typed in.      if (ref($oldresponse) eq 'ARRAY') {
       #$result='<i>'.$oldresponse.'</i>';   $oldresponse = $oldresponse->[$#Apache::inputtags::inputlist];
       $result='';      }
     }      $oldresponse = &HTML::Entities::encode($oldresponse,'<>&"');
   } elsif ($target eq 'edit') {  
     $result=&Apache::edit::tag_start($target,$token);      if ($Apache::lonhomework::type ne 'exam') {
     $result.=&Apache::edit::text_arg('Size:','size',$token,'5')."</td></tr>";   my $addchars=&Apache::lonxml::get_param('addchars',$parstack,$safeeval);
     $result.=&Apache::edit::end_table;   $result='';
   } elsif ($target eq 'modified') {   if ($addchars) {
     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'size');      $result.=&addchars('HWVAL_'.$id,$addchars);
     if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }   }
   } elsif ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {   my $readonly=&Apache::lonxml::get_param('readonly',$parstack,
       my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);   $safeeval);
       if ($size != 0) {$size=$size*2; $size.=' mm';} else {$size='40 mm';}   if (lc($readonly) eq 'yes' 
       $result='\framebox['.$size.'][s]{\tiny\strut}';      || $Apache::inputtags::status[-1] eq 'CANNOT_ANSWER') {
   }      $readonly=' readonly="readonly" ';
   return $result;   } 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';}
    $result='\framebox['.$size.'][s]{\tiny\strut}';
   
       } elsif ($target eq 'tex' 
        && $Apache::lonhomework::type eq 'exam'
        && &needs_exam_box($tagstack)) {
    $result.=&exam_box($target);
       }
       return $result;
 }  }
   
 sub end_textline {  sub end_textline {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   if    ($target eq 'web') { $Apache::lonxml::evaluate++; }      if    ($target eq 'web') { $Apache::lonxml::evaluate++; }
   elsif ($target eq 'edit') { return ('','no'); }      elsif ($target eq 'edit') { return ('','no'); }
   return "";      &end_input();
       return "";
 }  }
   
 sub start_hiddenline {  sub start_hiddenline {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $result = "";      my $result = "";
       my $input_id = &start_input($parstack,$safeeval);
     if ($target eq 'web') {      if ($target eq 'web') {
  $Apache::lonxml::evaluate--;   $Apache::lonxml::evaluate--;
  if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {   if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
     my $partid=$Apache::inputtags::part;      my $partid=$Apache::inputtags::part;
     my $id=$Apache::inputtags::response[-1];      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 ($Apache::lonhomework::type ne 'exam') {      if ($Apache::lonhomework::type ne 'exam') {
  $result= '<input type="hidden" name="HWVAL_'.$id.'" value="'.   $result= '<input type="hidden" name="HWVAL_'.$id.'" value="'.
     $oldresponse.'" />';      $oldresponse.'" />';
Line 240  sub start_hiddenline { Line 400  sub start_hiddenline {
  $result=&Apache::edit::tag_start($target,$token);   $result=&Apache::edit::tag_start($target,$token);
  $result.=&Apache::edit::end_table;   $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;      return $result;
 }  }
   
 sub end_hiddenline {  sub end_hiddenline {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   if    ($target eq 'web') { $Apache::lonxml::evaluate++; }      if    ($target eq 'web') { $Apache::lonxml::evaluate++; }
   elsif ($target eq 'edit') { return ('','no'); }      elsif ($target eq 'edit') { return ('','no'); }
   return "";      &end_input();
       return "";
 }  }
   
   # $part -> partid
   # $id -> responseid
   # $uploadefiletypes -> comma seperated list of extensions allowed or * for any
   # $which -> 'uploadedonly'  -> only newly uploaded files
   #           'portfolioonly' -> only allow files from portfolio
   #           'both' -> allow files from either location
   # $extratext -> additional text to go between the link and the input box
   # returns a table row <tr> 
   sub file_selector {
       my ($part,$id,$uploadedfiletypes,$which,$extratext)=@_;
       if (!$uploadedfiletypes) { return ''; }
   
       my $jspart=$part;
       $jspart=~s/\./_/g;
   
       my $result;
       
       $result.='<tr><td>';
       if ($uploadedfiletypes ne '*') {
    $result.=
       &mt('Allowed filetypes: <b>[_1]</b>',$uploadedfiletypes).'<br />';
       }
       if ($which eq 'uploadonly' || $which eq 'both') { 
    $result.=&mt('Submit a file: (only one file can be uploaded)').
       ' <br /><input type="file" size="50" name="HWFILE'.
       $jspart.'_'.$id.'" /><br />';
    $result .= &show_past_file_submission($part,$id);
       }
       if ( $which eq 'both') { 
    $result.='<br />'.'<strong>'.&mt('OR:').'</strong><br />';
       }
       if ($which eq 'portfolioonly' || $which eq 'both') { 
    $result.=$extratext.'<a href='."'".'javascript:void(window.open("/adm/portfolio?mode=selectfile&amp;fieldname=HWPORT'.$jspart.'_'.$id.'","cat","height=600,width=800,scrollbars=1,resizable=1,menubar=2,location=1"))'."'".'>'.
       &mt('Select Portfolio Files').'</a><br />'.
       '<input type="text" size="50" name="HWPORT'.$jspart.'_'.$id.'" value="" />'.
       '<br />';
    $result .= &show_past_portfile_submission($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 $possibleaward ('EXTRA_ANSWER','MISSING_ANSWER', 'ERROR',
          'NO_RESPONSE',
          'TOO_LONG', 'UNIT_INVALID_INSTRUCTOR',
          'UNIT_INVALID_STUDENT', 'UNIT_IRRECONCIBLE',
          'UNIT_FAIL', 'NO_UNIT',
          'UNIT_NOTNEEDED', 'WANTED_NUMERIC',
          'BAD_FORMULA', 'SIG_FAIL', 'INCORRECT', 
          'MISORDERED_RANK', 'INVALID_FILETYPE',
          'DRAFT', 'SUBMITTED', 'ASSIGNED_SCORE',
          'APPROX_ANS', 'EXACT_ANS','COMMA_FAIL') {
    if ($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',
     'COMMA_FAIL', 'SIG_FAIL', 'INCORRECT', 'MISORDERED_RANK',
     'INVALID_FILETYPE', '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 finalizeawards {  sub finalizeawards {
   my $result='';      my ($awardref,$msgref,$nameref,$reverse)=@_;
   my $award;      my $result;
   if ($#_ == '-1') { $result = "NO_RESPONSE"; }      if ($#$awardref == -1) { $result = "NO_RESPONSE"; }
   if ($result eq '' ) {      if ($result eq '' ) {
     my $blankcount;   my $blankcount;
     foreach $award (@_) {   foreach my $award (@$awardref) {
       if ($award eq '') {      if ($award eq '') {
  $result='MISSING_ANSWER';   $result='MISSING_ANSWER';
  $blankcount++;   $blankcount++;
       }      }
     }   }
     if ($blankcount == ($#_ + 1)) { $result = 'NO_RESPONSE'; }   if ($blankcount == ($#$awardref + 1)) { $result = 'NO_RESPONSE'; }
   }      }
   if ($result eq '' ) {      if (defined($result)) { return ($result); }
     foreach $award (@_) { if ($award eq 'MISSING_ANSWER') {$result='MISSING_ANSWER'; last;}}  
   }      # these awards are ordered from most important error through best correct
   if ($result eq '' ) {      my $awards = (!$reverse) ? \%fwd_awards : \%rev_awards ;
     foreach $award (@_) { if ($award eq 'ERROR') {$result='ERROR'; last;}}  
   }      my $best = $max;
   if ($result eq '' ) {      my $j=0;
     foreach $award (@_) { if ($award eq 'NO_RESPONSE') {$result='NO_RESPONSE'; last;} }      my $which;
   }      foreach my $award (@$awardref) {
   if ($result eq '' ) {   if ($awards->{$award} < $best) {
     foreach $award (@_) { if ($award eq 'TOO_LONG') {$result='TOO_LONG'; last;}}      $best  = $awards->{$award};
   }      $which = $j;
   if ($result eq '' ) {   }
     foreach $award (@_) {    $j++;
       if ($award eq 'UNIT_FAIL' ||      }
   $award eq 'NO_UNIT' ||      if (defined($which)) {
   $award eq 'UNIT_NOTNEEDED') {   if (ref($nameref)) {
  $result=$award; last;      return ($$awardref[$which],$$msgref[$which],$$nameref[$which]);
       }   } else {
     }      return ($$awardref[$which],$$msgref[$which]);
   }   }
   if ($result eq '' ) {      }
     foreach $award (@_) {       return ('ERROR',undef);
       if ($award eq 'WANTED_NUMERIC' ||   }
   $award eq 'BAD_FORMULA') {$result=$award; last;}  
     }  
   }  
   if ($result eq '' ) {  
     foreach $award (@_) { if ($award eq 'SIG_FAIL') {$result=$award; last;} }  
   }  
   if ($result eq '' ) {  
     foreach $award (@_) { if ($award eq 'INCORRECT') {$result=$award; last;} }  
   }  
   if ($result eq '' ) {  
       foreach $award (@_) { if ($award eq 'MISORDERED_RANK') {$result=$award; last;} }  
   }  
   if ($result eq '' ) {  
       foreach $award (@_) { if ($award eq 'INVALID_FILETYPE') {$result=$award; last;} }  
   }  
   if ($result eq '' ) {  
     foreach $award (@_) { if ($award eq 'DRAFT') {$result=$award; last;} }  
   }  
   if ($result eq '' ) {  
     foreach $award (@_) { if ($award eq 'SUBMITTED') {$result=$award; last;} }  
   }  
   if ($result eq '' ) {  
     foreach $award (@_) { if ($award eq 'ASSIGNED_SCORE') {$result=$award; last;} }  
   }  
   if ($result eq '' ) {  
     foreach $award (@_) { if ($award eq 'APPROX_ANS') {$result=$award; last;} }  
   }  
   if ($result eq '' ) { $result='EXACT_ANS'; }  
   return $result  
 }  }
   
 sub decideoutput {  sub decideoutput {
   my ($award,$solved,$previous,$target)=@_;      my ($award,$awarded,$awardmsg,$solved,$previous,$target)=@_;
   my $message='';      my $message='';
   my $button=0;      my $button=0;
   my $previousmsg;      my $previousmsg;
       my $css_class='orange';
   if ($previous) { $previousmsg='You have entered that answer before'; }      my $added_computer_text=0;
       my %possible_class =
   if      ($solved =~ /^correct/) {   ( 'correct'         => 'LC_answer_correct',
       if ($award eq 'ASSIGNED_SCORE') {    'charged_try'     => 'LC_answer_charged_try',
   $message = "A score has been assigned.";    'not_charged_try' => 'LC_answer_not_charged_try',
       } else {    'no_grade'        => 'LC_answer_no_grade',
   if ($target eq 'tex') {    'no_message'      => 'LC_no_message',
       $message = '\textbf{You are correct}.';    );
   } else {  
       $message = "<b>You are correct.</b>";      my $part = $Apache::inputtags::part;
   }      my $handgrade = 
   $message.=' Your receipt is '.&Apache::lonnet::receipt;   ('yes' eq lc(&Apache::lonnet::EXT("resource.$part.handgrade")));
       }      
       $button=0;      my $computer = ($handgrade)? ''
       $previousmsg='';                         : " ".&mt("Computer's answer now shown above.");
   } elsif ($solved =~ /^excused/) {      &Apache::lonxml::debug("handgrade has :$handgrade:");
       $message = "<b>You are excused from the problem.</b>";  
       $button=0;      if ($previous) { $previousmsg=&mt('You have entered that answer before'); }
       $previousmsg='';      
   } elsif ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS' ) {      if ($solved =~ /^correct/) {
       if ($solved =~ /^incorrect/ || $solved eq '') {          $css_class=$possible_class{'correct'};
   $message = "Incorrect";   $message=&mt('You are correct.');
   $button=1;   if ($awarded < 1 && $awarded > 0) {
       } else {      $message=&mt('You are partially correct.');
   $message = "<b>You are correct.</b> Your receipt is ".      $css_class=$possible_class{'not_charged_try'};
    &Apache::lonnet::receipt;   } elsif ($awarded < 1) {
   $button=0;      $message=&mt('Incorrect.');
   $previousmsg='';      $css_class=$possible_class{'charged_try'};
       }   }
   } elsif ($award eq 'NO_RESPONSE') {   if ($env{'request.filename'} =~ 
       $message = '';      m|/res/lib/templates/examupload.problem$|) {
       $button=1;      $message = &mt("A score has been assigned.");
   } elsif ($award eq 'MISSING_ANSWER') {      $added_computer_text=1;
       $message = 'Some parts were not submitted';   } else {
       $button = 1;      if ($target eq 'tex') {
   } elsif ($award eq 'ERROR') {   $message = '\textbf{'.$message.'}';
       $message = 'An error occured while trying to grade answer.';      } else {
       $button = 1;   $message = "<b>".$message."</b>";
   } elsif ($award eq 'TOO_LONG') {   $message.= $computer;
       $message = "The submitted answer was too long.";      }
       $button=1;      $added_computer_text=1;
   } elsif ($award eq 'WANTED_NUMERIC') {      my ($symb) = &Apache::lonnet::whichuser();
       $message = "This question expects a numeric answer";      if ((!$env{'course.'.
       $button=1;       $env{'request.course.id'}.
   } elsif ($award eq 'MISORDERED_RANK') {       '.disable_receipt_display'} eq 'yes')&&
       $message = 'You have provided an invalid ranking, please refer to '.      $symb) { 
        &Apache::loncommon::help_open_topic('Ranking_Problems','help on ranking problems').'.';   $message.=(($target eq 'web')?'<br />':' ').
       $button=1;      &mt('Your receipt is').' '.&Apache::lonnet::receipt($Apache::inputtags::part).
   } elsif ($award eq 'INVALID_FILETYPE') {      (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'');
       $message = 'The filetype extension of the file you uploaded is not allowed.';      }
       $button=1;   }
   } elsif ($award eq 'SIG_FAIL') {   $button=0;
       $message = "Please adjust significant figures.";# you provided %s significant figures";   $previousmsg='';
       $button=1;      } elsif ($solved =~ /^excused/) {
   } elsif ($award eq 'UNIT_FAIL') {   if ($target eq 'tex') {
       $message = "Units incorrect. ".      $message = ' \textbf{'.&mt('You are excused from the problem.').'} ';
        &Apache::loncommon::help_open_topic('Physical_Units'); #Computer reads units as %s";   } else {
       $button=1;      $message = "<b>".&mt('You are excused from the problem.')."</b>";
   } elsif ($award eq 'UNIT_NOTNEEDED') {   }
       $message = "Only a number required.";# Computer reads units of %s";   $css_class=$possible_class{'charged_try'};
       $button=1;   $button=0;
   } elsif ($award eq 'NO_UNIT') {   $previousmsg='';
       $message = "Units required".      } elsif ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS' ) {
        &Apache::loncommon::help_open_topic('Physical_Units');   if ($solved =~ /^incorrect/ || $solved eq '') {
       $button=1;      $message = &mt("Incorrect").".";
   } elsif ($award eq 'BAD_FORMULA') {      $css_class=$possible_class{'charged_try'};
       $message = "Unable to understand formula";      $button=1;
       $button=1;   } else {
   } elsif ($award eq 'INCORRECT') {      if ($target eq 'tex') {
       $message = "Incorrect";   $message = '\textbf{'.&mt('You are correct.').'}';
       $button=1;      } else {
   } elsif ($award eq 'SUBMITTED') {   $message = "<b>".&mt('You are correct.')."</b>";
       $message = "Your submission has been recorded.";   $message.= $computer;
       $button=1;      }
   } elsif ($award eq 'DRAFT') {      $added_computer_text=1;
       $message = "A draft copy has been saved.";      unless ($env{'course.'.
       $button=1;       $env{'request.course.id'}.
   } elsif ($award eq 'ASSIGNED_SCORE') {       '.disable_receipt_display'} eq 'yes') { 
       $message = "A score has been assigned.";   $message.=(($target eq 'web')?'<br />':' ').
       $button=0;      'Your receipt is '.&Apache::lonnet::receipt($Apache::inputtags::part).
   } else {      (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'');
       $message = "Unknown message: $award";      }
       $button=1;      $css_class=$possible_class{'correct'};
   }      $button=0;
   if (lc($Apache::lonhomework::problemstatus) eq 'no') {      $previousmsg='';
       $message = "Answer Submitted";   }
       $button=1;      } elsif ($award eq 'NO_RESPONSE') {
   }   $message = '';
   return ($button,$message,$previousmsg);   $css_class=$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.');
    $css_class=$possible_class{'not_charged_try'};
    $button = 1;
       } elsif ($award eq 'ERROR') {
    $message = &mt('An error occured 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').' '.&Apache::loncommon::help_open_topic('Ranking_Problems','help on ranking problems');
    }
    $css_class=$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");
    $css_class=$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 (lc($Apache::lonhomework::problemstatus) eq 'no'  && 
    $Apache::inputtags::status[-1] ne 'SHOW_ANSWER') {
    $message = &mt("Answer Submitted: Your final submission will be graded after the due date.");
    $css_class=$possible_class{'no_grade'};
    $button=1;
       }
       if ($Apache::inputtags::status[-1] eq 'SHOW_ANSWER' && 
    !$added_computer_text && $target ne 'tex') {
    $message.= $computer;
    $added_computer_text=1;
       }
       return ($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 {  sub removealldata {
Line 426  sub removealldata { Line 821  sub removealldata {
     }      }
 }  }
   
 sub setgradedata {  sub hidealldata {
   my ($award,$id,$previously_used) = @_;      my ($id)=@_;
   # if the student already has it correct, don't modify the status      foreach my $key (keys(%Apache::lonhomework::results)) {
   if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&   if (($key =~ /^resource\.\Q$id\E\./) && ($key !~ /\.collaborators$/)) {
       $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {      &Apache::lonxml::debug("Hidding $key");
     $Apache::lonhomework::results{"resource.$id.afterduedate"}=$award;      my $newkey=$key;
     return '';      $newkey=~s/^(resource\.\Q$id\E\.[^\.]+\.)(.*)$/${1}hidden${2}/;
   } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} !~      $Apache::lonhomework::results{$newkey}=
        /^correct/ || $Apache::lonhomework::scantronmode ||   $Apache::lonhomework::results{$key};
     lc($Apache::lonhomework::problemstatus) eq 'no') {      delete($Apache::lonhomework::results{$key});
     #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"}='';  
   sub setgradedata {
       my ($award,$msg,$id,$previously_used) = @_;
       if ($Apache::lonhomework::scantronmode && 
    &Apache::lonnet::validCODE($env{'form.CODE'})) {
    $Apache::lonhomework::results{"resource.CODE"}=$env{'form.CODE'};
       } elsif ($Apache::lonhomework::scantronmode && 
        $env{'form.CODE'} eq '' &&
        $Apache::lonhomework::history{"resource.CODE"} ne '') {
    $Apache::lonhomework::results{"resource.CODE"}='';
     }      }
     if ( $award eq 'ASSIGNED_SCORE') {  
  $Apache::lonhomework::results{"resource.$id.tries"} =      if (!$Apache::lonhomework::scantronmode &&
     $Apache::lonhomework::history{"resource.$id.tries"} + 1;   $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
  $Apache::lonhomework::results{"resource.$id.solved"} =   $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
     $solvemsg;   $Apache::lonhomework::results{"resource.$id.afterduedate"}=$award;
  my $numawards=scalar(@Apache::inputtags::response);   return '';
  $Apache::lonhomework::results{"resource.$id.awarded"} = 0;      } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} !~
  foreach my $res (@Apache::inputtags::response) {        /^correct/ || $Apache::lonhomework::scantronmode ||
     $Apache::lonhomework::results{"resource.$id.awarded"}+=        lc($Apache::lonhomework::problemstatus) eq 'no') {
        $Apache::lonhomework::results{"resource.$id.$res.awarded"};          # the student doesn't already have it correct,
  }   # or we are in a mode (scantron orno problem status) where a correct 
  if ($numawards > 0) {          # can become incorrect
     $Apache::lonhomework::results{"resource.$id.awarded"}/=   # handle assignment of tries and solved status
  $numawards;   my $solvemsg;
  }   if ($Apache::lonhomework::scantronmode) {
     } elsif ( $award eq 'APPROX_ANS' || $award eq 'EXACT_ANS' ) {      $solvemsg='correct_by_scantron';
       $Apache::lonhomework::results{"resource.$id.tries"} =   } else {
  $Apache::lonhomework::history{"resource.$id.tries"} + 1;      $solvemsg='correct_by_student';
       $Apache::lonhomework::results{"resource.$id.solved"} =   }
  $solvemsg;   if ($Apache::lonhomework::history{"resource.$id.afterduedate"}) {
       $Apache::lonhomework::results{"resource.$id.awarded"} = '1';      $Apache::lonhomework::results{"resource.$id.afterduedate"}='';
     } elsif ( $award eq 'INCORRECT' ) {   }
       $Apache::lonhomework::results{"resource.$id.tries"} =   if ( $award eq 'ASSIGNED_SCORE') {
  $Apache::lonhomework::history{"resource.$id.tries"} + 1;      $Apache::lonhomework::results{"resource.$id.tries"} =
       $Apache::lonhomework::results{"resource.$id.solved"} =   $Apache::lonhomework::history{"resource.$id.tries"} + 1;
  'incorrect_attempted'      $Apache::lonhomework::results{"resource.$id.solved"} =
     } elsif ( $award eq 'SUBMITTED' ) {   $solvemsg;
       $Apache::lonhomework::results{"resource.$id.tries"} =      my $numawards=scalar(@Apache::inputtags::response);
  $Apache::lonhomework::history{"resource.$id.tries"} + 1;      $Apache::lonhomework::results{"resource.$id.awarded"} = 0;
       $Apache::lonhomework::results{"resource.$id.solved"} =      foreach my $res (@Apache::inputtags::response) {
  'ungraded_attempted';   $Apache::lonhomework::results{"resource.$id.awarded"}+=
     } elsif ( $award eq 'DRAFT' ) {      $Apache::lonhomework::results{"resource.$id.$res.awarded"};
       $Apache::lonhomework::results{"resource.$id.solved"} = '';      }
     } elsif ( $award eq 'NO_RESPONSE' ) {      if ($numawards > 0) {
  #no real response so delete any data that got stored   $Apache::lonhomework::results{"resource.$id.awarded"}/=
       $numawards;
       }
    } elsif ( $award eq 'APPROX_ANS' || $award eq 'EXACT_ANS' ) {
       $Apache::lonhomework::results{"resource.$id.tries"} =
    $Apache::lonhomework::history{"resource.$id.tries"} + 1;
       $Apache::lonhomework::results{"resource.$id.solved"} =
    $solvemsg;
       $Apache::lonhomework::results{"resource.$id.awarded"} = '1';
    } elsif ( $award eq 'INCORRECT' ) {
       $Apache::lonhomework::results{"resource.$id.tries"} =
    $Apache::lonhomework::history{"resource.$id.tries"} + 1;
       if (lc($Apache::lonhomework::problemstatus) eq 'no' ||
    $Apache::lonhomework::scantronmode) {
    $Apache::lonhomework::results{"resource.$id.awarded"} = 0;
       }
       $Apache::lonhomework::results{"resource.$id.solved"} =
    'incorrect_attempted';
    } elsif ( $award eq 'SUBMITTED' ) {
       $Apache::lonhomework::results{"resource.$id.tries"} =
    $Apache::lonhomework::history{"resource.$id.tries"} + 1;
       $Apache::lonhomework::results{"resource.$id.solved"} =
    'ungraded_attempted';
    } elsif ( $award eq 'DRAFT' ) {
       $Apache::lonhomework::results{"resource.$id.solved"} = '';
    } elsif ( $award eq 'NO_RESPONSE' ) {
       #no real response so delete any data that got stored
       &removealldata($id);
       return '';
    } else {
       $Apache::lonhomework::results{"resource.$id.solved"} =
    'incorrect_attempted';
       if (lc($Apache::lonhomework::problemstatus) eq 'no' ||
    $Apache::lonhomework::scantronmode) {
    $Apache::lonhomework::results{"resource.$id.tries"} =
       $Apache::lonhomework::history{"resource.$id.tries"} + 1;
    $Apache::lonhomework::results{"resource.$id.awarded"} = 0;
       }
    }
    if (defined($msg)) {
       $Apache::lonhomework::results{"resource.$id.awardmsg"} = $msg;
    }
    # did either of the overall awards chage? If so ignore the 
    # previous check
    if (($Apache::lonhomework::results{"resource.$id.awarded"} eq
        $Apache::lonhomework::history{"resource.$id.awarded"}) &&
       ($Apache::lonhomework::results{"resource.$id.solved"} eq
        $Apache::lonhomework::history{"resource.$id.solved"})) {
       # check if this was a previous submission if it was delete the
       # unneeded data and update the previously_used attribute
       if ( $previously_used eq 'PREVIOUSLY_USED') {
    if (lc($Apache::lonhomework::problemstatus) ne 'no') {
       delete($Apache::lonhomework::results{"resource.$id.tries"});
       $Apache::lonhomework::results{"resource.$id.previous"} = '1';
    }
       } elsif ( $previously_used eq 'PREVIOUSLY_LAST') {
    #delete all data as they student didn't do anything, but save
    #the list of collaborators.
    &removealldata($id);
    #and since they didn't do anything we were never here
    return '';
       } else {
    $Apache::lonhomework::results{"resource.$id.previous"} = '0';
       }
    }
       } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} =~
         /^correct/ ) {
    #delete all data as they student already has it correct
  &removealldata($id);   &removealldata($id);
    #and since they didn't do anything we were never here
  return '';   return '';
     } else {  
       $Apache::lonhomework::results{"resource.$id.solved"} =  
  'incorrect_attempted';  
       if (lc($Apache::lonhomework::problemstatus) eq 'no') {  
   $Apache::lonhomework::results{"resource.$id.tries"} =  
       $Apache::lonhomework::history{"resource.$id.tries"} + 1;  
       }  
     }  
   
     # check if this was a previous submission if it was delete the  
     # unneeded data and update the previously_used attribute  
     if ( $previously_used eq 'PREVIOUSLY_USED') {  
  if (lc($Apache::lonhomework::problemstatus) ne 'no') {  
     delete($Apache::lonhomework::results{"resource.$id.tries"});  
     $Apache::lonhomework::results{"resource.$id.previous"} = '1';  
  }  
     } elsif ( $previously_used eq 'PREVIOUSLY_LAST') {  
       #delete all data as they student didn't do anything, but save  
       #the list of collaborators.  
       &removealldata($id);  
       #and since they didn't do anything we were never here  
       return '';  
     } else {  
       $Apache::lonhomework::results{"resource.$id.previous"} = '0';  
     }      }
   } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} =~      $Apache::lonhomework::results{"resource.$id.award"} = $award;
     /^correct/ ) {      if ($award eq 'SUBMITTED') {
       #delete all data as they student already has it correct   &Apache::response::add_to_gradingqueue();
       &removealldata($id);      }
       #and since they didn't do anything we were never here  }
       return '';  
   }  sub find_which_previous {
   $Apache::lonhomework::results{"resource.$id.award"} = $award;      my ($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 {  sub grade {
   my ($target) = @_;      my ($target) = @_;
   my $id = $Apache::inputtags::part;      my $id = $Apache::inputtags::part;
   my $response='';      my $response='';
   if ( defined $ENV{'form.submitted'}) {      if ( defined $env{'form.submitted'}) {
     my @awards = ();   my (@awards,@msgs);
     foreach $response (@Apache::inputtags::response) {   foreach $response (@Apache::inputtags::response) {
       &Apache::lonxml::debug("looking for response.$id.$response.awarddetail");      &Apache::lonxml::debug("looking for response.$id.$response.awarddetail");
       my $value=$Apache::lonhomework::results{"resource.$id.$response.awarddetail"};      my $value=$Apache::lonhomework::results{"resource.$id.$response.awarddetail"};
       &Apache::lonxml::debug("keeping $value from $response for $id");      &Apache::lonxml::debug("keeping $value from $response for $id");
       push (@awards,$value);      push (@awards,$value);
     }      $value=$Apache::lonhomework::results{"resource.$id.$response.awardmsg"};
     my $finalaward = &finalizeawards(@awards);      &Apache::lonxml::debug("got message $value from $response for $id");
     my $previously_used;      push (@msgs,$value);
     if ( $#Apache::inputtags::previous eq $#awards ) {   }
  my $match=0;   my ($finalaward,$msg) = &finalizeawards(\@awards,\@msgs);
  my @matches;   my $previously_used;
  foreach my $versionar (@Apache::inputtags::previous_version) {   if ( $#Apache::inputtags::previous eq $#awards ) {
     foreach my $version (@$versionar) {      my ($match) =
  $matches[$version]++;   &previous_match(\@Apache::inputtags::previous_version,
     }   scalar(@Apache::inputtags::response));
  }      
  foreach my $elem (@matches) {if ($elem eq ($#awards+1)) {$match=1;}}      if ($match) {
  if ($match) {   $previously_used = 'PREVIOUSLY_LAST';
     $previously_used = 'PREVIOUSLY_LAST';   foreach my $value (@Apache::inputtags::previous) {
     foreach my $value (@Apache::inputtags::previous) {      if ($value eq 'PREVIOUSLY_USED' ) {
  if ($value eq 'PREVIOUSLY_USED' ) {   $previously_used = $value;
     $previously_used = $value;   last;
     last;      }
  }   }
     }      }
  }   }
    &Apache::lonxml::debug("final award $finalaward, $previously_used, message $msg");
    &setgradedata($finalaward,$msg,$id,$previously_used);
     }      }
     &Apache::lonxml::debug("final award $finalaward, $previously_used");      return '';
     &setgradedata($finalaward,$id,$previously_used);  
   }  
   return '';  
 }  }
   
 sub gradestatus {  sub get_grade_messages {
   my ($id,$target) = @_;      my ($id,$prefix,$target,$status) = @_;
   my $showbutton = 1;  
   my $message = '';      my ($message,$latemessage,$trystr,$previousmsg);
   my $latemessage = '';      my $showbutton = 1;
   my $trystr='';  
   my $button='';      my $award = $Apache::lonhomework::history{"$prefix.award"};
   my $previousmsg='';      my $awarded = $Apache::lonhomework::history{"$prefix.awarded"};
       my $solved = $Apache::lonhomework::history{"$prefix.solved"};
   my $status = $Apache::inputtags::status['-1'];      my $previous = $Apache::lonhomework::history{"$prefix.previous"};
   &Apache::lonxml::debug("gradestatus has :$status:");      my $awardmsg = $Apache::lonhomework::history{"$prefix.awardmsg"};
   if ( $status ne 'CLOSED' && $status ne 'UNAVAILABLE') {        &Apache::lonxml::debug("Found Award |$award|$solved|$awardmsg");
     my $award = $Apache::lonhomework::history{"resource.$id.award"};      if ( $award ne '' || $solved ne '' || $status eq 'SHOW_ANSWER') {
     my $solved = $Apache::lonhomework::history{"resource.$id.solved"};   &Apache::lonxml::debug('Getting message');
     my $previous = $Apache::lonhomework::history{"resource.$id.previous"};   ($showbutton,my $css_class,$message,$previousmsg) =
     &Apache::lonxml::debug("Found Award |$award|$solved|");      &decideoutput($award,$awarded,$awardmsg,$solved,$previous,
     if ( $award ne '' ) {    $target);
       &Apache::lonxml::debug('Getting message');   if ($target eq 'tex') {
       ($showbutton,$message,$previousmsg) =      $message='\vskip 2 mm '.$message.' ';
  &decideoutput($award,$solved,$previous,$target);   } else {
       if ($target eq 'tex') {      $message="<td class=\"$css_class\">$message</td>";
  $message=' '.$message.' ';      if ($previousmsg) {
       } else {   $previousmsg="<td class=\"LC_answer_previous\">$previousmsg</td>";
  $message="<td bgcolor=\"#aaffaa\">$message</td>";      }
  if ($previousmsg) {  
   $previousmsg="<td bgcolor=\"#ffaaaa\">$previousmsg</td>";  
  }   }
       }  
     }      }
     my $tries = $Apache::lonhomework::history{"resource.$id.tries"};      my $tries = $Apache::lonhomework::history{"$prefix.tries"};
     my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");      my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
     &Apache::lonxml::debug("got maxtries of :$maxtries:");      &Apache::lonxml::debug("got maxtries of :$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 ( $tries eq '' ) { $tries = '0'; }
     if ( $maxtries eq '' ) { $maxtries = '2'; }       if ( $maxtries eq '' ) { $maxtries = '2'; } 
     if ( $maxtries eq 'con_lost' ) { $maxtries = '0'; }       if ( $maxtries eq 'con_lost' ) { $maxtries = '0'; } 
     if ( $showbutton ) {      my $tries_text=&mt('Tries');
       if ($target eq 'tex') {      if ( $Apache::lonhomework::type eq 'survey' ||
   if ($ENV{'request.state'} ne "construct" && $Apache::lonhomework::type ne 'exam') {   $Apache::lonhomework::parsing_a_task) {
       $trystr = ' {\vskip 1 mm \small \textit{Tries} '.$tries.'/'.$maxtries.'} \vskip 2 mm ';   $tries_text=&mt('Submissions');
   } else {      }
       $trystr = '\vskip 0 mm ';  
   }      if ($showbutton) {
       } else {   if ($target eq 'tex') {
          $trystr = "<td>Tries $tries/$maxtries</td>";      if ($env{'request.state'} ne "construct"
       }   && $Apache::lonhomework::type ne 'exam'
     }   && $env{'form.suppress_tries'} ne 'yes') {
     if ( $status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') {$showbutton = 0;}   $trystr = ' {\vskip 1 mm \small \textit{'.$tries_text.'} '.
     if ( $showbutton ) {       $tries.'/'.$maxtries.'} \vskip 2 mm ';
       if ($target ne 'tex') {      } else {
         $button = '<br /><input type="submit" name="submit" value="Submit Answer" />';   $trystr = '\vskip 0 mm ';
       }      }
     }   } else {
     if ($Apache::lonhomework::history{"resource.$id.afterduedate"}) {      $trystr = "<td><nobr>".$tries_text." $tries";
       #last submissions was after due date      if ($Apache::lonhomework::parsing_a_task) {
       if ($target eq 'tex') {      } elsif($env{'request.state'} ne 'construct') {
   $latemessage=' The last submission was after the Due Date ';   $trystr.="/$maxtries";
       } else {      } else {
         $latemessage="<td bgcolor=\"#ffaaaa\">The last submission was after the Due Date</td>";   if (defined($Apache::inputtags::params{'maxtries'})) {
       }      $trystr.="/".$Apache::inputtags::params{'maxtries'};
     }   }
   }      }
   my $output= $previousmsg.$latemessage.$message.$trystr;      $trystr.="</nobr></td>";
   if ($output =~ /^\s*$/) {   }
     return $button;      }
   } else {  
     if ($target eq 'tex') {      if ($Apache::lonhomework::history{"$prefix.afterduedate"}) {
       return $button.' \vskip 0 mm '.$output.' ';   #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 ($id,$target) = @_;
       my $showbutton = 1;
       my $message = '';
       my $latemessage = '';
       my $trystr='';
       my $button='';
       my $previousmsg='';
   
       my $status = $Apache::inputtags::status['-1'];
       &Apache::lonxml::debug("gradestatus has :$status:");
       if ( $status ne 'CLOSED' 
    && $status ne 'UNAVAILABLE' 
    && $status ne 'INVALID_ACCESS' 
    && $status ne 'NEEDS_CHECKIN' 
    && $status ne 'NOT_IN_A_SLOT') {  
   
    ($previousmsg,$latemessage,$message,$trystr) =
       &get_grade_messages($id,"resource.$id",$target,$status,
    $showbutton);
    if ( $status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') {
       $showbutton = 0;
    }
    if ( $status eq 'SHOW_ANSWER') {
       undef($previousmsg);
    }
    if ( $showbutton ) { 
       if ($target ne 'tex') {
    $button = '<input onsubmit="javascript:setSubmittedPart(\''.$id.'\')" type="submit" name="submit_'.$id.'" value="'.&mt('Submit Answer').'" />';
       }
    }
   
       }
       my $output= $previousmsg.$latemessage.$message.$trystr;
       if ($output =~ /^\s*$/) {
    return $button;
     } else {      } else {
       return $button.'<table><tr>'.$output.'</tr></table>';   if ($target eq 'tex') {
       return $button.' \vskip 0 mm '.$output.' ';
    } else {
       return '<table><tr><td>'.$button.'</td>'.$output.'<td>'.&previous_tries($id,$target).'</td></tr></table>';
    }
       }
   }
   
   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 ( $Apache::lonhomework::history{"$prefix.solved"} =~ 
    /^correct/) {
    $message =~ s{(<td.*?>)(.*?)(</td>)}
                {$1 <strong>Correct</strong>. $3};
       }
       my $trystr = "(Try ".
    $Apache::lonhomework::history{"$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(' ').
    '</th><th colspan="'.scalar(@Apache::inputtags::response).'">'.
    &mt('Submitted Answer').'</th>';
       $output ='<table class="LC_prior_tries">'.$headers.$output.'</table>';
       #return $output;
       $output=~s/\\/\\\\/g;
       $output=~s/\'/\\\'/g;
       $output=~s/\s+/ /g;
       my $windowopen=&Apache::lonhtmlcommon::javascript_docopen();
       my $start_page =
    &Apache::loncommon::start_page('Previous Tries', undef,
          {'only_body' => 1,
    'bgcolor'   => '#FFFFFF',
    'js_ready'  => 1,});
       my $end_page =
    &Apache::loncommon::end_page({'js_ready' => 1,});
       
       my $result ="<script type=\"text/javascript\">
   // <![CDATA[
       function LONCAPA_previous_tries_$Apache::lonxml::curdepth() {newWindow=open('','new_W','width=500,height=500,scrollbars=1,resizable=yes');newWindow.$windowopen;newWindow.document.writeln('$start_page $output $end_page');newWindow.document.close();newWindow.focus()}
   // ]]>
   </script><a href=\"javascript:LONCAPA_previous_tries_$Apache::lonxml::curdepth();void(0);\">".&mt("Previous Tries")."</a><br />";
       #use Data::Dumper;
       #&Apache::lonnet::logthis(&Dumper(\%Apache::inputtags::submission_display));
       return $result;
 }  }
   
 1;  1;
 __END__  __END__
     
Removed from v.1.104  
changed lines
  Added in v.1.221

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