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Diff for /loncom/homework/inputtags.pm between versions 1.1 and 1.125

version 1.1, 2000/07/25 21:27:30 version 1.125, 2003/12/22 22:24:21
Line 1 Line 1
 # The LearningOnline Network with CAPA  # The LearningOnline Network with CAPA
 # input  definitons  # input  definitons
   #
   # $Id$
   #
   # Copyright Michigan State University Board of Trustees
   #
   # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
   #
   # LON-CAPA is free software; you can redistribute it and/or modify
   # it under the terms of the GNU General Public License as published by
   # the Free Software Foundation; either version 2 of the License, or
   # (at your option) any later version.
   #
   # LON-CAPA is distributed in the hope that it will be useful,
   # but WITHOUT ANY WARRANTY; without even the implied warranty of
   # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   # GNU General Public License for more details.
   #
   # You should have received a copy of the GNU General Public License
   # along with LON-CAPA; if not, write to the Free Software
   # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   #
   # /home/httpd/html/adm/gpl.txt
   #
   # http://www.lon-capa.org/
   
 package Apache::inputtags;  package Apache::inputtags;
   use HTML::Entities();
 use strict;  use strict;
   use Apache::loncommon;
   use Apache::lonlocal;
   
 sub BEGIN {  BEGIN {
   &Apache::lonxml::register('Apache::inputtags',('textline','answergroup'));    &Apache::lonxml::register('Apache::inputtags',('hiddenline','textfield','textline'));
 }  }
   
   
 sub initialize_inputtags {  sub initialize_inputtags {
   $Apache::inputtags::curvalue=0;    # list of current input ids
     @Apache::inputtags::input=();
     # list of all input ids seen in this problem
     @Apache::inputtags::inputlist=();
     # list of all current response ids
     @Apache::inputtags::response=();
     # list of all response ids seen in this problem
     @Apache::inputtags::responselist=();
     # list of whether or not a specific response was previously used
     @Apache::inputtags::previous=();
     # submission it was used in
     @Apache::inputtags::previous_version=();
     # id of current part, 0 means that no part is current (inside <problem> only
     $Apache::inputtags::part='';
     # list of all part ids seen
     @Apache::inputtags::partlist=();
     # list of problem date statuses, the first element is for <problem>
     # 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 {
       my %check;
       foreach my $id (@Apache::inputtags::partlist,
       @Apache::inputtags::responselist,
       @Apache::inputtags::importlist) {
    $check{$id}++;
       }
       my @duplicates;
       foreach my $id (sort(keys(%check))) {
    if ($check{$id} > 1) {
       push(@duplicates,$id);
    }
       }
       if (@duplicates) {
    &Apache::lonxml::error("Duplicated ids found, problem will operate incorrectly. Duplicated ids seen: ",join(', ',@duplicates));
       }
   }
   
   sub start_input {
     my ($parstack,$safeeval)=@_;
     my $id = &Apache::lonxml::get_param('id',$parstack,$safeeval);
     if ($id eq '') { $id = $Apache::lonxml::curdepth; }
     push (@Apache::inputtags::input,$id);
     push (@Apache::inputtags::inputlist,$id);
     return $id;
   }
   
   sub end_input {
     pop @Apache::inputtags::input;
     return '';
   }
   
   sub addchars {
       my ($fieldid,$addchars)=@_;
       my $output='';
       foreach (split(/\,/,$addchars)) {
    $output.='<a href="javascript:void(document.forms.lonhomework.'.
       $fieldid.'.value+=\''.$_.'\')">'.$_.'</a> ';
       }
       return $output;
   }
   
   sub start_textfield {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $result = "";
     my $id = &start_input($parstack,$safeeval);
     my $resid=$Apache::inputtags::response[-1];
     if ($target eq 'web') {
       $Apache::lonxml::evaluate--;
       if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
    my $partid=$Apache::inputtags::part;
    my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$resid.submission"});
    my $cols = &Apache::lonxml::get_param('cols',$parstack,$safeeval);
    if ( $cols eq '') { $cols = 80; }
    my $rows = &Apache::lonxml::get_param('rows',$parstack,$safeeval);
    if ( $rows eq '') { $rows = 10; }
    my $addchars=&Apache::lonxml::get_param('addchars',$parstack,$safeeval);
    $result='';
           if ($addchars) {
       $result.=&addchars('HWVAL_'.$resid,$addchars);
    }
    $result.= '<textarea wrap="hard" name="HWVAL_'.$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",$parser);
    }
       } else {
    #right or wrong don't show it
    #$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);
       $result.=&Apache::edit::text_arg
    ('Click-On Texts (comma sep):','addchars',$token,10);
       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,
      $safeeval,'rows','cols','addchars');
       if ($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 start_textline {  sub start_textline {
   my ($target,$token,$parstack,$parser,$safeeval)=@_;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   my $result = "";    my $result = "";
   $Apache::inputtags::curvalue++;  
   if ($target eq 'web') {    if ($target eq 'web') {
     $result= '<input name="HWVAL'.$Apache::inputtags::curvalue.'" value="">';      $Apache::lonxml::evaluate--;
       my $partid=$Apache::inputtags::part;
       my $id=$Apache::inputtags::response[-1];
       if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
         my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);
         my $maxlength;
         if ($size eq '') { $size=20; } else {
    if ($size < 20) { $maxlength=$size; }
         }
         my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"});
         if ($Apache::lonhomework::type ne 'exam') {
    my $addchars=&Apache::lonxml::get_param('addchars',$parstack,$safeeval);
    $result='';
           if ($addchars) {
       $result.=&addchars('HWVAL_'.$id,$addchars);
    }
           $result.= '<input type="text" name="HWVAL_'.$id.'" value="'.
       $oldresponse.'" size="'.$size.'" maxlength="'.$maxlength.'" />';
         }
       } else {
         #right or wrong don't show what was last typed in.
         #$result='<i>'.$oldresponse.'</i>';
         $result='';
       }
     } elsif ($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)."</td></tr>";
       $result.=&Apache::edit::end_table;
     } elsif ($target eq 'modified') {
       my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'size','addchars');
       if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
     } elsif ($target eq 'tex' and $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}';
   }    }
   return $result;    return $result;
 }  }
   
 sub end_textline {  sub end_textline {
   my ($target,$token,$parstack,$parser,$safeeval)=@_;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     if    ($target eq 'web') { $Apache::lonxml::evaluate++; }
     elsif ($target eq 'edit') { return ('','no'); }
     return "";
 }  }
   
 sub start_answergroup {  sub start_hiddenline {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $result = "";
       if ($target eq 'web') {
    $Apache::lonxml::evaluate--;
    if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
       my $partid=$Apache::inputtags::part;
       my $id=$Apache::inputtags::response[-1];
       my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"});
       if ($Apache::lonhomework::type ne 'exam') {
    $result= '<input type="hidden" name="HWVAL_'.$id.'" value="'.
       $oldresponse.'" />';
       }
    }
       } elsif ($target eq 'edit') {
    $result=&Apache::edit::tag_start($target,$token);
    $result.=&Apache::edit::end_table;
       }
       return $result;
 }  }
   
 sub end_answergroup {  sub end_hiddenline {
   return '<input type="submit" value="Submit All Answers"';    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     if    ($target eq 'web') { $Apache::lonxml::evaluate++; }
     elsif ($target eq 'edit') { return ('','no'); }
     return "";
 }  }
   
   sub finalizeawards {
     my $result='';
     my $award;
     if ($#_ == '-1') { $result = "NO_RESPONSE"; }
     if ($result eq '' ) {
       my $blankcount;
       foreach $award (@_) {
         if ($award eq '') {
    $result='MISSING_ANSWER';
    $blankcount++;
         }
       }
       if ($blankcount == ($#_ + 1)) { $result = 'NO_RESPONSE'; }
     }
     if ($result eq '' ) {
       foreach $award (@_) { if ($award eq 'MISSING_ANSWER') {$result='MISSING_ANSWER'; last;}}
     }
     if ($result eq '' ) {
       foreach $award (@_) { if ($award eq 'ERROR') {$result='ERROR'; last;}}
     }
     if ($result eq '' ) {
       foreach $award (@_) { if ($award eq 'NO_RESPONSE') {$result='NO_RESPONSE'; last;} }
     }
     if ($result eq '' ) {
       foreach $award (@_) { if ($award eq 'TOO_LONG') {$result='TOO_LONG'; last;}}
     }
     if ($result eq '' ) {
       foreach $award (@_) { 
         if ($award eq 'UNIT_FAIL' ||
     $award eq 'NO_UNIT' ||
     $award eq 'UNIT_NOTNEEDED') {
    $result=$award; last;
         }
       }
     }
     if ($result eq '' ) {
       foreach $award (@_) { 
         if ($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 {
     my ($award,$solved,$previous,$target)=@_;
     my $message='';
     my $button=0;
     my $previousmsg;
     my $bgcolor='orange';
     my %possiblecolors =
         ( 'correct' => '#aaffaa',
    'charged_try' => '#ffaaaa',
    'not_charged_try' => '#ffffaa',
    'no_message' => '#fffff',
         );
     if ($previous) { $previousmsg=&mt('You have entered that answer before'); }
   
     if      ($solved =~ /^correct/) {
         if ($award eq 'ASSIGNED_SCORE') {
     $message = &mt("A score has been assigned.");
         } else {
     if ($target eq 'tex') {
         $message = '\textbf{'.&mt('You are correct.').'}';
     } else {
         $message = "<b>".&mt('You are correct.')."</b>";
     }
             unless ($ENV{'course.'.
      $ENV{'request.course.id'}.
      '.disable_receipt_display'} eq 'yes') { 
         $message.=(($target eq 'web')?'<br />':' ').
     &mt('Your receipt is').' '.&Apache::lonnet::receipt().
          (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'');
     }
         }
         $bgcolor=$possiblecolors{'correct'};
         $button=0;
         $previousmsg='';
     } elsif ($solved =~ /^excused/) {
         if ($target eq 'tex') {
     $message = ' \textbf{'.&mt('You are excused from the problem.').'} ';
         } else {
     $message = "<b>".&mt('You are excused from the problem.')."</b>";
         }
         $bgcolor=$possiblecolors{'charged_try'};
         $button=0;
         $previousmsg='';
     } elsif ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS' ) {
         if ($solved =~ /^incorrect/ || $solved eq '') {
     $message = &mt("Incorrect");
     $bgcolor=$possiblecolors{'charged_try'};
     $button=1;
         } else {
     $message = "<b>".&mt('You are correct.')."</b>";
             unless ($ENV{'course.'.
      $ENV{'request.course.id'}.
      '.disable_receipt_display'} eq 'yes') { 
         $message.=(($target eq 'web')?'<br />':' ').
     'Your receipt is '.&Apache::lonnet::receipt().
          (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'');
     }
     $bgcolor=$possiblecolors{'correct'};
     $button=0;
     $previousmsg='';
         }
     } elsif ($award eq 'NO_RESPONSE') {
         $message = '';
         $bgcolor=$possiblecolors{'no_feedback'};
         $button=1;
     } elsif ($award eq 'MISSING_ANSWER') {
         $message = &mt('Some parts were not submitted.');
         $bgcolor=$possiblecolors{'not_charged_try'};
         $button = 1;
     } elsif ($award eq 'ERROR') {
         $message = &mt('An error occured while grading your answer.');
         $bgcolor=$possiblecolors{'not_charged_try'};
         $button = 1;
     } elsif ($award eq 'TOO_LONG') {
         $message = &mt("The submitted answer was too long.");
         $bgcolor=$possiblecolors{'not_charged_try'};
         $button=1;
     } elsif ($award eq 'WANTED_NUMERIC') {
         $message = &mt("This question expects a numeric answer.");
         $bgcolor=$possiblecolors{'not_charged_try'};
         $button=1;
     } elsif ($award eq 'MISORDERED_RANK') {
         $message = &mt('You have provided an invalid ranking');
         if ($target ne 'tex') {
     $message.=', '.&mt('please refer to').' '.&Apache::loncommon::help_open_topic('Ranking_Problems','help on ranking problems').'.';
         }
         $bgcolor=$possiblecolors{'not_charged_try'};
         $button=1;
     } elsif ($award eq 'INVALID_FILETYPE') {
         $message = &mt('The filetype extension of the file you uploaded is not allowed.');
         $bgcolor=$possiblecolors{'not_charged_try'};
         $button=1;
     } elsif ($award eq 'SIG_FAIL') {
         $message = &mt("Significant figures are incorrect, submission was not graded.");# you provided %s significant figures";
         $bgcolor=$possiblecolors{'not_charged_try'};
         $button=1;
     } elsif ($award eq 'UNIT_FAIL') {
         $message = &mt("Units incorrect.");
         if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units');} #Computer reads units as %s";
         $bgcolor=$possiblecolors{'not_charged_try'};
         $button=1;
     } elsif ($award eq 'UNIT_NOTNEEDED') {
         $message = &mt("Only a number required.");# Computer reads units of %s";
         $bgcolor=$possiblecolors{'not_charged_try'};
         $button=1;
     } elsif ($award eq 'NO_UNIT') {
         $message = &mt("Units required");
         if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units')};
         $bgcolor=$possiblecolors{'not_charged_try'};
         $button=1;
     } elsif ($award eq 'BAD_FORMULA') {
         $message = &mt("Unable to understand formula");
         $bgcolor=$possiblecolors{'not_charged_try'};
         $button=1;
     } elsif ($award eq 'INCORRECT') {
         $message = &mt("Incorrect");
         $bgcolor=$possiblecolors{'charged_try'};
         $button=1;
     } elsif ($award eq 'SUBMITTED') {
         $message = &mt("Your submission has been recorded.");
         $bgcolor=$possiblecolors{'correct'};
         $button=1;
     } elsif ($award eq 'DRAFT') {
         $message = "A draft copy has been saved.";
         $bgcolor=$possiblecolors{'not_charged_try'};
         $button=1;
     } elsif ($award eq 'ASSIGNED_SCORE') {
         $message = "A score has been assigned.";
         $bgcolor=$possiblecolors{'correct'};
         $button=0;
     } else {
         $message = &mt("Unknown message").": $award";
         $button=1;
     }
     if (lc($Apache::lonhomework::problemstatus) eq 'no'  && 
         $Apache::inputtags::status[-1] ne 'SHOW_ANSWER') {
         $message = &mt("Answer Submitted");
         $bgcolor=$possiblecolors{'correct'};
         $button=1;
     }
     return ($button,$bgcolor,$message,$previousmsg);
   }
   
   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 setgradedata {
     my ($award,$id,$previously_used) = @_;
     # if the student already has it correct, don't modify the status
     if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
         $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
       $Apache::lonhomework::results{"resource.$id.afterduedate"}=$award;
       return '';
     } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} !~
          /^correct/ || $Apache::lonhomework::scantronmode ||
       lc($Apache::lonhomework::problemstatus) eq 'no') {
       #handle assignment of tries and solved status
       my $solvemsg;
       if ($Apache::lonhomework::scantronmode) {
    $solvemsg='correct_by_scantron';
       } else {
    $solvemsg='correct_by_student';
       }
       if ($Apache::lonhomework::history{"resource.$id.afterduedate"}) {
         $Apache::lonhomework::results{"resource.$id.afterduedate"}='';
       }
       if ( $award eq 'ASSIGNED_SCORE') {
    $Apache::lonhomework::results{"resource.$id.tries"} =
       $Apache::lonhomework::history{"resource.$id.tries"} + 1;
    $Apache::lonhomework::results{"resource.$id.solved"} =
       $solvemsg;
    my $numawards=scalar(@Apache::inputtags::response);
    $Apache::lonhomework::results{"resource.$id.awarded"} = 0;
    foreach my $res (@Apache::inputtags::response) {
       $Apache::lonhomework::results{"resource.$id.awarded"}+=
          $Apache::lonhomework::results{"resource.$id.$res.awarded"};
    }
    if ($numawards > 0) {
       $Apache::lonhomework::results{"resource.$id.awarded"}/=
    $numawards;
    }
       } elsif ( $award eq 'APPROX_ANS' || $award eq 'EXACT_ANS' ) {
         $Apache::lonhomework::results{"resource.$id.tries"} =
    $Apache::lonhomework::history{"resource.$id.tries"} + 1;
         $Apache::lonhomework::results{"resource.$id.solved"} =
    $solvemsg;
         $Apache::lonhomework::results{"resource.$id.awarded"} = '1';
       } elsif ( $award eq 'INCORRECT' ) {
         $Apache::lonhomework::results{"resource.$id.tries"} =
    $Apache::lonhomework::history{"resource.$id.tries"} + 1;
         if (lc($Apache::lonhomework::problemstatus) eq 'no') {
     $Apache::lonhomework::results{"resource.$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') {
     $Apache::lonhomework::results{"resource.$id.tries"} =
         $Apache::lonhomework::history{"resource.$id.tries"} + 1;
     $Apache::lonhomework::results{"resource.$id.awarded"} = 0;
         }
       }
   
       # check if this was a previous submission if it was delete the
       # unneeded data and update the previously_used attribute
       if ( $previously_used eq 'PREVIOUSLY_USED') {
    if (lc($Apache::lonhomework::problemstatus) ne 'no') {
       delete($Apache::lonhomework::results{"resource.$id.tries"});
       $Apache::lonhomework::results{"resource.$id.previous"} = '1';
    }
       } elsif ( $previously_used eq 'PREVIOUSLY_LAST') {
         #delete all data as they student didn't do anything, but save
         #the list of collaborators.
         &removealldata($id);
         #and since they didn't do anything we were never here
         return '';
       } else {
         $Apache::lonhomework::results{"resource.$id.previous"} = '0';
       }
     } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} =~
       /^correct/ ) {
         #delete all data as they student already has it correct
         &removealldata($id);
         #and since they didn't do anything we were never here
         return '';
     }
     $Apache::lonhomework::results{"resource.$id.award"} = $award;
   }
   
   sub grade {
     my ($target) = @_;
     my $id = $Apache::inputtags::part;
     my $response='';
     if ( defined $ENV{'form.submitted'}) {
       my @awards = ();
       foreach $response (@Apache::inputtags::response) {
         &Apache::lonxml::debug("looking for response.$id.$response.awarddetail");
         my $value=$Apache::lonhomework::results{"resource.$id.$response.awarddetail"};
         &Apache::lonxml::debug("keeping $value from $response for $id");
         push (@awards,$value);
       }
       my $finalaward = &finalizeawards(@awards);
       my $previously_used;
       if ( $#Apache::inputtags::previous eq $#awards ) {
    my $match=0;
    my @matches;
    foreach my $versionar (@Apache::inputtags::previous_version) {
       foreach my $version (@$versionar) {
    $matches[$version]++;
       }
    }
    foreach my $elem (@matches) {if ($elem eq ($#awards+1)) {$match=1;}}
    if ($match) {
       $previously_used = 'PREVIOUSLY_LAST';
       foreach my $value (@Apache::inputtags::previous) {
    if ($value eq 'PREVIOUSLY_USED' ) {
       $previously_used = $value;
       last;
    }
       }
    }
       }
       &Apache::lonxml::debug("final award $finalaward, $previously_used");
       &setgradedata($finalaward,$id,$previously_used);
     }
     return '';
   }
   
   sub gradestatus {
     my ($id,$target) = @_;
     my $showbutton = 1;
     my $bgcolor = '';
     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') {  
       my $award = $Apache::lonhomework::history{"resource.$id.award"};
       my $solved = $Apache::lonhomework::history{"resource.$id.solved"};
       my $previous = $Apache::lonhomework::history{"resource.$id.previous"};
       &Apache::lonxml::debug("Found Award |$award|$solved|");
       if ( $award ne '' || $solved ne '') {
         &Apache::lonxml::debug('Getting message');
         ($showbutton,$bgcolor,$message,$previousmsg) =
    &decideoutput($award,$solved,$previous,$target);
         if ($target eq 'tex') {
    $message=' '.$message.' ';
         } else {
    $message="<td bgcolor=\"$bgcolor\">$message</td>";
    if ($previousmsg) {
     $previousmsg="<td bgcolor=\"#aaaaff\">$previousmsg</td>";
    }
         }
       }
       my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
       my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
       &Apache::lonxml::debug("got maxtries of :$maxtries:");
       #if tries are set to negative turn off the Tries/Button and messages
       if (defined($maxtries) && $maxtries < 0) { return ''; }
       if ( $tries eq '' ) { $tries = '0'; }
       if ( $maxtries eq '' ) { $maxtries = '2'; } 
       if ( $maxtries eq 'con_lost' ) { $maxtries = '0'; } 
       if ( $showbutton ) {
         if ($target eq 'tex') {
     if ($ENV{'request.state'} ne "construct" && $Apache::lonhomework::type ne 'exam') {
         $trystr = ' {\vskip 1 mm \small \textit{'.&mt('Tries').'} '.$tries.'/'.$maxtries.'} \vskip 2 mm ';
     } else {
         $trystr = '\vskip 0 mm ';
     }
         } else {
     $trystr = "<td>".&mt('Tries')." $tries";
     if($ENV{'request.state'} ne 'construct') { $trystr.="/$maxtries"; }
     $trystr.="</td>";
         }
       }
       if ( $status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') {$showbutton = 0;}
       if ( $showbutton ) { 
         if ($target ne 'tex') {
           $button = '<br /><input type="submit" name="submit" value="'.&mt('Submit Answer').'" />';
         }
       }
       if ($Apache::lonhomework::history{"resource.$id.afterduedate"}) {
         #last submissions was after due date
         if ($target eq 'tex') {
     $latemessage=' The last submission was after the Due Date ';
         } else {
           $latemessage="<td bgcolor=\"#ffaaaa\">The last submission was after the Due Date</td>";
         }
       }
     }
     my $output= $previousmsg.$latemessage.$message.$trystr;
     if ($output =~ /^\s*$/) {
       return $button;
     } else {
       if ($target eq 'tex') {
         return $button.' \vskip 0 mm '.$output.' ';
       } else {
         return $button.'<table><tr>'.$output.'</tr></table>';
       }
     }
   }
 1;  1;
 __END__  __END__
     
Removed from v.1.1  
changed lines
  Added in v.1.125

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