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Diff for /loncom/homework/inputtags.pm between versions 1.27 and 1.138

version 1.27, 2001/02/19 20:34:20 version 1.138, 2004/03/31 05:23:59
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',('textarea','textline','datasubmission'));      &Apache::lonxml::register('Apache::inputtags',('hiddenline','textfield','textline'));
 }  }
   
   
 sub initialize_inputtags {  sub initialize_inputtags {
   @Apache::inputtags::input=();      # list of current input ids
   @Apache::inputtags::inputlist=();      @Apache::inputtags::input=();
   @Apache::inputtags::response=();      # list of all input ids seen in this problem
   @Apache::inputtags::responselist=();      @Apache::inputtags::inputlist=();
   @Apache::inputtags::answergroup=();      # list of all current response ids
   $Apache::inputtags::part='';      @Apache::inputtags::response=();
   @Apache::inputtags::status=();      # list of all response ids seen in this problem
   %Apache::inputtags::params=();      @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=();
       # just used to note whether we have seen a response that isn't in a part
       $Apache::inputtags::response_with_no_part=0;
   }
   
   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 {  sub start_input {
   my ($parstack,$safeeval)=@_;      my ($parstack,$safeeval)=@_;
   my $args ='';      my $id = &Apache::lonxml::get_param('id',$parstack,$safeeval);
   if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }      if ($id eq '') { $id = $Apache::lonxml::curdepth; }
   my $id = &Apache::run::run("{$args;".'return $id}',$safeeval);      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 start_textarea {  sub addchars {
   my ($target,$token,$parstack,$parser,$safeeval)=@_;      my ($fieldid,$addchars)=@_;
   my $result = "";      my $output='';
   my $id = &start_input($parstack,$safeeval);      foreach (split(/\,/,$addchars)) {
   if ($target eq 'web') {   $output.='<a href="javascript:void(document.forms.lonhomework.'.
     $result= '<textarea name="HWVAL'.$id.'" value="">';      $fieldid.'.value+=\''.$_.'\')">'.$_.'</a> ';
   }      }
   return $result;      return $output;
 }  }
   
 sub end_textarea {  sub start_textfield {
   my ($target,$token,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   if ($target eq 'web') {      my $result = "";
     return "</textarea>";      my $id = &start_input($parstack,$safeeval);
   }       my $resid=$Apache::inputtags::response[-1];
   &end_input;      if ($target eq 'web') {
   return '';   $Apache::lonxml::evaluate--;
    if ($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 $result = "";
   if ($target eq 'web') {      if ($target eq 'web') {
     my $args ='';   $Apache::lonxml::evaluate--;
     if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }   my $partid=$Apache::inputtags::part;
     my $size = &Apache::run::run("{$args;".'return $size}',$safeeval);   my $id=$Apache::inputtags::response[-1];
     if ($size eq '') { $size=20; }   if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
     my $oldresponse = $Apache::lonhomework::history{"resource.$Apache::inputtags::part.$Apache::inputtags::response['-1'].submission"};      my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);
     $result= '<input type="text" name="HWVAL'.$Apache::inputtags::response['-1'].'" value="'.$oldresponse.'" size="'.$size.'">';      my $maxlength;
   }      if ($size eq '') { $size=20; } else {
   return $result;   if ($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;
 }  }
   
 sub end_textline {  sub end_textline {
   my ($target,$token,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   return "";      if    ($target eq 'web') { $Apache::lonxml::evaluate++; }
       elsif ($target eq 'edit') { return ('','no'); }
       return "";
   }
   
   sub start_hiddenline {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $result = "";
       if ($target eq 'web') {
    $Apache::lonxml::evaluate--;
    if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
       my $partid=$Apache::inputtags::part;
       my $id=$Apache::inputtags::response[-1];
       my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"},'<>&"');
       if ($Apache::lonhomework::type ne 'exam') {
    $result= '<input type="hidden" name="HWVAL_'.$id.'" value="'.
       $oldresponse.'" />';
       }
    }
       } elsif ($target eq 'edit') {
    $result=&Apache::edit::tag_start($target,$token);
    $result.=&Apache::edit::end_table;
       }
       return $result;
 }  }
   
 #answergroup is deprecated  sub end_hiddenline {
 #sub start_answergroup {      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
 #  my ($target,$token,$parstack,$parser,$safeeval)=@_;      if    ($target eq 'web') { $Apache::lonxml::evaluate++; }
 #  my $args ='';      elsif ($target eq 'edit') { return ('','no'); }
 #  if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }      return "";
 #  my $id = &Apache::run::run("{$args;".'return $id}',$safeeval);  }
 #  push (@Apache::inputtags::answergroup,$id);  
 #  if ($target == 'web') {  sub checkstatus {
 #          my ($value,$awardref,$msgref)=@_;
 #  }      for (my $i=0;$i<=$#$awardref;$i++) {
 #  return '';   if ($$awardref[$i] eq $value) {
 #}      return ($$awardref[$i],$$msgref[$i]);
 #   }
 #sub end_answergroup {      }
 #  my ($target,$token,$parstack,$parser,$safeeval)=@_;      return(undef,undef);
 #  return ''; # <answergroup> has ben deprecated  
 #  my $args ='';  
 #  if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }  
 #  my $id = &Apache::run::run("{$args;".'return $id}',$safeeval);  
 #  push (@Apache::inputtags::answergroup,$id);  
 #  my $result='';  
 #  my $button='<input type="submit" name="submit" value="Submit All Answers">';  
 #  my $showbutton='1';  
 #  my $usedtry='1';  
 #  my $response='';  
 #  if ( $target == 'web' ) {  
 #    if ( defined $ENV{'form.submitted'}) {  
 #    }  
 #    if ($showbutton > 0) { $result.=$button }  
 #  }  
 #  pop @Apache::inputtags::answergroup;  
 #  return $result;  
 #}  
   
   
 sub start_datasubmission {  
 }  
   
 sub end_datasubmission {  
   my ($target,$token,$parstack,$parser,$safeeval)=@_;  
   if ( $target == 'web' ) {  
     return '<input type="submit" name="submit" value="Submit All Data">';  
   }  
   return '';  
 }  }
   
 sub finalizeawards {  sub finalizeawards {
   my $result='';      my ($awardref,$msgref)=@_;
   my $award;      my $result=undef;
   if ($#_ == '-1') { $result = "NO_RESPONSE"; }      my $award;
   if ($result eq '' ) {      my $msg;
     foreach $award (@_) { if ($award eq '') {$result='MISSING_ANSWER'; last;}}      if ($#$awardref == -1) { $result = "NO_RESPONSE"; }
   }      if ($result eq '' ) {
   if ($result eq '' ) {   my $blankcount;
     foreach $award (@_) { if ($award eq 'ERROR') {$result='ERROR'; last;}}   foreach $award (@$awardref) {
   }      if ($award eq '') {
    $result='MISSING_ANSWER';
   if ($result eq '' ) {   $blankcount++;
     foreach $award (@_) {       }
       if ($award eq 'UNIT_FAIL' ||   }
   $award eq 'NO_UNIT' ||   if ($blankcount == ($#$awardref + 1)) { $result = 'NO_RESPONSE'; }
   $award eq 'UNIT_NOTNEEDED') {      }
  $result=$award; last;      if (defined($result)) { return ($result,$msg); }
       }      foreach my $possibleaward ('MISSING_ANSWER', 'ERROR', 'NO_RESPONSE',
     }         'TOO_LONG', 'UNIT_INVALID_INSTRUCTOR',
   }         'UNIT_INVALID_STUDENT', 'UNIT_IRRECONCIBLE',
   if ($result eq '' ) {         'UNIT_FAIL', 'NO_UNIT',
     foreach $award (@_) {          'UNIT_NOTNEEDED', 'WANTED_NUMERIC',
       if ($award eq 'WANTED_NUMERIC' ||          'BAD_FORMULA', 'SIG_FAIL', 'INCORRECT', 
   $award eq 'BAD_FORMULA') {$result=$award; last;}         'MISORDERED_RANK', 'INVALID_FILETYPE',
     }         'DRAFT', 'SUBMITTED', 'ASSIGNED_SCORE',
   }         'APPROX_ANS', 'EXACT_ANS') {
   if ($result eq '' ) {   ($result,$msg)=&checkstatus($possibleaward,$awardref,$msgref);
     foreach $award (@_) { if ($award eq 'SIG_FAIL') {$result=$award; last;} }   if (defined($result)) { return ($result,$msg); }
   }      }
   if ($result eq '' ) {      return ('ERROR',undef);
     foreach $award (@_) { if ($award eq 'INCORRECT') {$result=$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 ($award)=@_;      my ($award,$awardmsg,$solved,$previous,$target)=@_;
   my $message='';      my $message='';
   my $button=0;      my $button=0;
   if      ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS' ) {      my $previousmsg;
     $message = "<b>You are correct.</b> Your receipt is ".&Apache::lonnet::receipt;      my $bgcolor='orange';
     $button=0;      my %possiblecolors =
   } elsif ($award eq 'NO_RESPONSE') {   ( 'correct' => '#aaffaa',
     $message = '';    'charged_try' => '#ffaaaa',
     $button=1;    'not_charged_try' => '#ffffaa',
   } elsif ($award eq 'MISSING_ANSWER') {    'no_message' => '#fffff',
     $message = 'Some parts were not submitted';    );
     $button = 1;      if ($previous) { $previousmsg=&mt('You have entered that answer before'); }
   } elsif ($award eq 'WANTED_NUMERIC') {      
     $message = "This question expects a numeric answer";      if      ($solved =~ /^correct/) {
     $button=1;   if ($award eq 'ASSIGNED_SCORE') {
   } elsif ($award eq 'SIG_FAIL') {      $message = &mt("A score has been assigned.");
     $message = "Please adjust significant figures.";# you provided %s significant figures";   } else {
     $button=1;      if ($target eq 'tex') {
   } elsif ($award eq 'UNIT_FAIL') {   $message = '\textbf{'.&mt('You are correct.').'}';
     $message = "Units incorrect."; #Computer reads units as %s";      } else {
     $button=1;   $message = "<b>".&mt('You are correct.')."</b>";
   } elsif ($award eq 'UNIT_NOTNEEDED') {      }
     $message = "Only a number required.";# Computer reads units of %s";      unless ($ENV{'course.'.
     $button=1;       $ENV{'request.course.id'}.
   } elsif ($award eq 'NO_UNIT') {       '.disable_receipt_display'} eq 'yes') { 
     $message = "Units required";   $message.=(($target eq 'web')?'<br />':' ').
     $button=1;      &mt('Your receipt is').' '.&Apache::lonnet::receipt($Apache::inputtags::part).
   } elsif ($award eq 'BAD_FORMULA') {      (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'');
     $message = "Unable to understand formula";      }
     $button=1;   }
   } elsif ($award eq 'INCORRECT') {   $bgcolor=$possiblecolors{'correct'};
     $message = "Incorrect";   $button=0;
     $button=1;   $previousmsg='';
   } else {      } elsif ($solved =~ /^excused/) {
     $message = "Unknown message: $award";   if ($target eq 'tex') {
     $button=1;      $message = ' \textbf{'.&mt('You are excused from the problem.').'} ';
   }   } else {
   return ($button,$message);      $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($Apache::inputtags::part).
       (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'');
       }
       $bgcolor=$possiblecolors{'correct'};
       $button=0;
       $previousmsg='';
    }
       } elsif ($award eq 'NO_RESPONSE') {
    $message = '';
    $bgcolor=$possiblecolors{'no_feedback'};
    $button=1;
       } elsif ($award eq 'MISSING_ANSWER') {
    $message = &mt('Some items were not submitted.');
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button = 1;
       } elsif ($award eq 'ERROR') {
    $message = &mt('An error occured while grading your answer.');
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button = 1;
       } elsif ($award eq 'TOO_LONG') {
    $message = &mt("The submitted answer was too long.");
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'WANTED_NUMERIC') {
    $message = &mt("This question expects a numeric answer.");
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'MISORDERED_RANK') {
    $message = &mt('You have provided an invalid ranking');
    if ($target ne 'tex') {
       $message.=', '.&mt('please refer to').' '.&Apache::loncommon::help_open_topic('Ranking_Problems','help on ranking problems').'.';
    }
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'INVALID_FILETYPE') {
    $message = &mt('The filetype extension of the file you uploaded is not allowed.');
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'SIG_FAIL') {
    $message = &mt("Significant figures are incorrect, you provided [_1] significant figures while [_2] to [_3] were expected. Submission not graded.",(split(/:/,$awardmsg)));
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'UNIT_INVALID_INSTRUCTOR') {
    $message = &mt('Error in instructor specifed unit. This error has been reported to the instructor.', $awardmsg);
    if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units');} 
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'UNIT_INVALID_STUDENT') {
    $message = &mt('Unable to interpret units. Computer reads units as "[_1]"',
          $awardmsg);
    if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units');} 
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'UNIT_FAIL' || $award eq 'UNIT_IRRECONCIBLE') {
    $message = &mt('Units incorrect. Computer reads units as "[_1]"',
          $awardmsg);
    if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units');} 
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'UNIT_NOTNEEDED') {
    $message = &mt('Only a number required. Computer reads units of "[_1]"',$awardmsg);
    $bgcolor=$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: Your final submission will be graded after the due date.");
    $bgcolor=$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 {  sub setgradedata {
   my ($award,$id) = @_;      my ($award,$msg,$id,$previously_used) = @_;
   if ( $award eq 'APPROX_ANS' || $award eq 'EXACT_ANS' ) {      # if the student already has it correct, don't modify the status
     $Apache::lonhomework::results{"resource.$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') {
       'correct_by_student';   $Apache::lonhomework::results{"resource.$id.afterduedate"}=$award;
     $Apache::lonhomework::results{"resource.$id.awarded"} = '1';   return '';
   } elsif ( $award eq 'INCORRECT' ) {      } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} !~
     $Apache::lonhomework::results{"resource.$id.tries"} =        /^correct/ || $Apache::lonhomework::scantronmode ||
       $Apache::lonhomework::history{"resource.$id.tries"} + 1;        lc($Apache::lonhomework::problemstatus) eq 'no') {
     $Apache::lonhomework::results{"resource.$id.solved"} =   #handle assignment of tries and solved status
       'incorrect_attempted';   my $solvemsg;
   } else {   if ($Apache::lonhomework::scantronmode) {
     $Apache::lonhomework::results{"resource.$id.solved"} =      $solvemsg='correct_by_scantron';
       'incorrect_attempted';   } else {
   }      $solvemsg='correct_by_student';
   $Apache::lonhomework::results{"resource.$id.award"} = $award;   }
    if ($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;
       }
    }
    if (defined($msg)) {
       $Apache::lonhomework::results{"resource.$id.awardmsg"} = $msg;
    }
    # did either of the overall awards chage? If so ignore the 
    # previous check
    if (($Apache::lonhomework::results{"resource.$id.awarded"} eq
        $Apache::lonhomework::history{"resource.$id.awarded"}) &&
       ($Apache::lonhomework::results{"resource.$id.solved"} eq
        $Apache::lonhomework::history{"resource.$id.solved"})) {
       # check if this was a previous submission if it was delete the
       # unneeded data and update the previously_used attribute
       if ( $previously_used eq 'PREVIOUSLY_USED') {
    if (lc($Apache::lonhomework::problemstatus) ne 'no') {
       delete($Apache::lonhomework::results{"resource.$id.tries"});
       $Apache::lonhomework::results{"resource.$id.previous"} = '1';
    }
       } elsif ( $previously_used eq 'PREVIOUSLY_LAST') {
    #delete all data as they student didn't do anything, but save
    #the list of collaborators.
    &removealldata($id);
    #and since they didn't do anything we were never here
    return '';
       } else {
    $Apache::lonhomework::results{"resource.$id.previous"} = '0';
       }
    }
       } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} =~
         /^correct/ ) {
    #delete all data as they student already has it correct
    &removealldata($id);
    #and since they didn't do anything we were never here
    return '';
       }
       $Apache::lonhomework::results{"resource.$id.award"} = $award;
 }  }
   
 sub grade {  sub grade {
   my ($target) = @_;      my ($target) = @_;
   my $id = $Apache::inputtags::part;      my $id = $Apache::inputtags::part;
 #  my $result='';      my $response='';
   my $response='';  
   if ( $target == 'web' ) {  
     if ( defined $ENV{'form.submitted'}) {      if ( defined $ENV{'form.submitted'}) {
       my @awards = ();   my (@awards,@msgs);
       &Apache::lonxml::debug("$#Apache::inputtags::responselist");   foreach $response (@Apache::inputtags::response) {
       foreach $response (@Apache::inputtags::responselist) {      &Apache::lonxml::debug("looking for response.$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");
  if ( $value ne '' ) {      push (@awards,$value);
   &Apache::lonxml::debug("keep ing $value from $response for $id");      $value=$Apache::lonhomework::results{"resource.$id.$response.awardmsg"};
   push (@awards,$value);      &Apache::lonxml::debug("got message $value from $response for $id");
  } else {      push (@msgs,$value);
   &Apache::lonxml::debug("skipping $value from $response for $id");  
  }   }
       }   my ($finalaward,$msg) = &finalizeawards(\@awards,\@msgs);
       my $finalaward = &finalizeawards(@awards);   my $previously_used;
       &Apache::lonxml::debug("final award $finalaward");   if ( $#Apache::inputtags::previous eq $#awards ) {
       &setgradedata($finalaward,$id);      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, message $msg");
    &setgradedata($finalaward,$msg,$id,$previously_used);
     }      }
   }      return '';
   return '';  
 }  }
   
 sub gradestatus {  sub gradestatus {
   my ($id) = @_;      my ($id,$target) = @_;
   my $showbutton = 1;      my $showbutton = 1;
   my $message = '';      my $bgcolor = '';
   my $trystr='';      my $message = '';
   my $button='';      my $latemessage = '';
         my $trystr='';
   my $status = $Apache::inputtags::status['-1'];      my $button='';
   &Apache::lonxml::debug("gradestatus has :$status:");      my $previousmsg='';
   if ( $status ne 'CLOSED' ) {    
     my $award = $Apache::lonhomework::history{"resource.$id.award"};      my $status = $Apache::inputtags::status['-1'];
     &Apache::lonxml::debug("Found Award |$award|");      &Apache::lonxml::debug("gradestatus has :$status:");
     if ( $award ne '' ) {      if ( $status ne 'CLOSED' && $status ne 'UNAVAILABLE' &&
       &Apache::lonxml::debug('Getting message');   $status ne 'INVALID_ACCESS') {  
       ($showbutton,$message) = &decideoutput($award);   my $award = $Apache::lonhomework::history{"resource.$id.award"};
       $message="<br /><table bgcolor=\"#aaffaa\"><tr><td>$message</td></tr></table>";   my $solved = $Apache::lonhomework::history{"resource.$id.solved"};
     }   my $previous = $Apache::lonhomework::history{"resource.$id.previous"};
     my $tries = $Apache::lonhomework::history{"resource.$id.tries"};   my $awardmsg = $Apache::lonhomework::history{"resource.$id.awardmsg"};
     my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");   &Apache::lonxml::debug("Found Award |$award|$solved|$awardmsg");
     &Apache::lonxml::debug("got maxtries of :$maxtries:");   if ( $award ne '' || $solved ne '') {
     if ( $tries eq '' ) { $tries = '0'; }      &Apache::lonxml::debug('Getting message');
     if ( $maxtries eq '' ) { $maxtries = '2'; }       ($showbutton,$bgcolor,$message,$previousmsg) =
     if ( $maxtries eq 'con_lost' ) { $maxtries = '0'; }    &decideoutput($award,$awardmsg,$solved,$previous,$target);
     if ( $showbutton ) {      if ($target eq 'tex') {
       $trystr = "<br />Tries $tries/$maxtries";   $message='\vskip 2 mm '.$message.' ';
     }      } else {
     if ( $status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') {$showbutton = 0;}   $message="<td bgcolor=\"$bgcolor\">$message</td>";
     if ( $showbutton ) {    if ($previousmsg) {
       $button = '<br /><input type="submit" name="submit" value="Submit All Answers" />';      $previousmsg="<td bgcolor=\"#aaaaff\">$previousmsg</td>";
    }
       }
    }
    my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
    my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
    &Apache::lonxml::debug("got maxtries of :$maxtries:");
    #if tries are set to negative turn off the Tries/Button and messages
    if (defined($maxtries) && $maxtries < 0) { return ''; }
    if ( $tries eq '' ) { $tries = '0'; }
    if ( $maxtries eq '' ) { $maxtries = '2'; } 
    if ( $maxtries eq 'con_lost' ) { $maxtries = '0'; } 
    my $tries_text=&mt('Tries');
    if ( $Apache::lonhomework::type eq 'survey') { $tries_text=&mt('Submissions'); }
    if ( $showbutton ) {
       if ($target eq 'tex') {
    if ($ENV{'request.state'} ne "construct" && $Apache::lonhomework::type ne 'exam') {
       $trystr = ' {\vskip 1 mm \small \textit{'.$tries_text.'} '.$tries.'/'.$maxtries.'} \vskip 2 mm ';
    } else {
       $trystr = '\vskip 0 mm ';
    }
       } else {
    $trystr = "<td><nobr>".$tries_text." $tries";
    if($ENV{'request.state'} ne 'construct') {
       $trystr.="/$maxtries";
    } else {
       if (defined($Apache::inputtags::params{'maxtries'})) {
    $trystr.="/".$Apache::inputtags::params{'maxtries'};
       }
    }
    $trystr.="</nobr></td>";
       }
    }
    if ( $status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') {$showbutton = 0;}
    if ( $showbutton ) { 
       if ($target ne 'tex') {
    $button = '<input type="submit" name="submit" value="'.&mt('Submit Answer').'" />';
       }
    }
    if ($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 '<table><tr><td>'.$button.'</td>'.$output.'</tr></table>';
    }
     }      }
   }  
   return $button.$message.$trystr;  
 }  }
 1;  1;
 __END__  __END__
Removed from v.1.27  
changed lines
  Added in v.1.138

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