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Diff for /loncom/homework/inputtags.pm between versions 1.57 and 1.179

version 1.57, 2002/06/24 21:23:26 version 1.179, 2005/11/10 22:19:27
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::lonlocal;
   use Apache::lonnet;
   
 BEGIN {  BEGIN {
   &Apache::lonxml::register('Apache::inputtags',('textfield','textline','datasubmission'));      &Apache::lonxml::register('Apache::inputtags',('hiddenline','textfield','textline'));
 }  }
   
   #   Initializes a set of global variables used during the parse of the problem.
   #
   #  @Apache::inputtags::input        - List of current input ids.
   #  @Apache::inputtags::inputlist    - List of all input ids seen this problem.
   #  @Apache::inputtags::response     - List of all current resopnse ids.
   #  @Apache::inputtags::responselist - List of all response ids seen this 
   #                                       problem.
   #  @Apache::inputtags::hint         - List of all hint ids.
   #  @Apache::inputtags::hintlist     - List of all hint ids seen this problem.
   #  @Apache::inputtags::previous     - List describing if specific responseds
   #                                       have been used
   #  @Apache::inputtags::previous_version - Submission responses were used in.
   #  $Apache::inputtags::part         - Current part id (valid only in 
   #                                       <problem>)
   #                                     0 if not in a part.
   #  @Apache::inputtags::partlist     - List of part ids seen in the current
   #                                       <problem>
   #  @Apache::inputtags::status       - List of problem  statuses. First 
   #                                     element is the status of the <problem>
   #                                     the remainder are for individual <part>s.
   #  %Apache::inputtags::params       - Hash of defined parameters for the
   #                                     current response.
   #  @Apache::inputtags::import       - List of all ids for <import> thes get
   #                                     join()ed and prepended.
   #  @Apache::inputtags::importlist   - List of all import ids seen.
   #  $Apache::inputtags::response_with_no_part
   #                                   - Flag set true if we have seen a response
   #                                     that is not inside a <part>
   #  %Apache::inputtags::answertxt    - <*response> tags store correct
   #                                     answer strings for display by <textline/>
   #                                     in this hash.
   
 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=();
   # id of current part, 0 means that no part is current (inside <problem> only      @Apache::inputtags::status=();
   $Apache::inputtags::part='';      %Apache::inputtags::params=();
   # list of problem date statuses, the first element is for <problem>      @Apache::inputtags::import=();
   # if there is a second element it is for the current <part>      @Apache::inputtags::importlist=();
   @Apache::inputtags::status=();      $Apache::inputtags::response_with_no_part=0;
   # hash of defined params for the current response      %Apache::inputtags::answertxt=();
   %Apache::inputtags::params=();  }
   # list of all ids, for <import>, these get join()ed and prepended  
   @Apache::inputtags::import=();  sub check_for_duplicate_ids {
       my %check;
       foreach my $id (@Apache::inputtags::partlist,
       @Apache::inputtags::responselist,
       @Apache::inputtags::hintlist,
       @Apache::inputtags::importlist) {
    $check{$id}++;
       }
       my @duplicates;
       foreach my $id (sort(keys(%check))) {
    if ($check{$id} > 1) {
       push(@duplicates,$id);
    }
       }
       if (@duplicates) {
    &Apache::lonxml::error("Duplicated ids found, problem will operate incorrectly. Duplicated ids seen: ",join(', ',@duplicates));
       }
 }  }
   
 sub start_input {  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 start_textfield {  sub addchars {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($fieldid,$addchars)=@_;
   my $result = "";      my $output='';
   my $id = &start_input($parstack,$safeeval);      foreach (split(/\,/,$addchars)) {
   my $resid=$Apache::inputtags::response[-1];   $output.='<a href="javascript:void(document.forms.lonhomework.'.
   if ($target eq 'web') {      $fieldid.'.value+=\''.$_.'\')">'.$_.'</a> ';
     $Apache::lonxml::evaluate--;  
     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 '') { $rows = 10; }  
     if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {  
       $result= '<textarea name="HWVAL'.$resid.'" '.  
  "rows=\"$rows\" cols=\"$cols\">".$oldresponse;  
     } else {  
       $result='<table border="1"><tr><td><i>'.$oldresponse.'</i></td></tr></table>';  
     }      }
     if ($oldresponse ne '') {      return $output;
       #get rid of any startup text if the user has already responded  }
       &Apache::lonxml::get_all_text("/textfield",$$parser[-1]);  
     }  sub start_textfield {
   }      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   if ($target eq 'grade') {      my $result = "";
     my $seedtext=&Apache::lonxml::get_all_text("/textfield",$$parser[-1]);      my $id = &start_input($parstack,$safeeval);
     if ($seedtext eq $ENV{'form.HWVAL'.$resid}) {      my $resid=$Apache::inputtags::response[-1];
       # if the seed text is still there it wasn't a real submission      if ($target eq 'web') {
       $ENV{'form.HWVAL'.$resid}='';   $Apache::lonxml::evaluate--;
    if ($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 = 16; }
       my $addchars=&Apache::lonxml::get_param('addchars',$parstack,$safeeval);
       $result='';
       if ($addchars) {
    $result.=&addchars('HWVAL_'.$resid,$addchars);
       }
       push @Apache::lonxml::htmlareafields,'HWVAL_'.$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",$parser);
       }
    } else {
       #right or wrong don't show it
       #$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;
   return $result;  
 }  }
   
 sub end_textfield {  sub end_textfield {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   if ($target eq 'web') {      my $result;
     $Apache::lonxml::evaluate++;      if ($target eq 'web') {
     if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {   $Apache::lonxml::evaluate++;
       return "</textarea>";   if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
     }      return "</textarea>";
   }   }
   &end_input;      } elsif ($target eq 'edit') {
   return '';   $result=&Apache::edit::end_table();
       }
       &end_input;
       return $result;
 }  }
   
 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') {      if ($target eq 'web') {
     $Apache::lonxml::evaluate--;   $Apache::lonxml::evaluate--;
     my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);   my $partid=$Apache::inputtags::part;
     if ($size eq '') { $size=20; }   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);
     my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"});      my $maxlength;
     if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {      if ($size eq '') { $size=20; } else {
       $result= '<input type="text" name="HWVAL'.$id.'" value="'.   if ($size < 20) { $maxlength=$size; }
  $oldresponse.'" size="'.$size.'" />';      }
     } else {      my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"},'<>&"');
       $result='<i>'.$oldresponse.'</i>';      if ($Apache::lonhomework::type ne 'exam') {
    my $addchars=&Apache::lonxml::get_param('addchars',$parstack,$safeeval);
    $result='';
    if ($addchars) {
       $result.=&addchars('HWVAL_'.$id,$addchars);
    }
    my $readonly=&Apache::lonxml::get_param('readonly',$parstack,
    $safeeval);
    if (lc($readonly) eq 'yes') {
       $readonly=' readonly="readonly" ';
    } else {
       $readonly='';
    }
    $result.= '<input type="text" '.$readonly.' name="HWVAL_'.$id.'" value="'.
       $oldresponse.'" size="'.$size.'" maxlength="'.$maxlength.'" />';
       }
    } else {
       #right or wrong don't show what was last typed in.
       $result='<b>'.$Apache::inputtags::answertxt{$id}.'</b>';
       #$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' 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}';
     }      }
   } elsif ($target eq 'edit') {      return $result;
     $result=&Apache::edit::tag_start($target,$token);  
     $result.=&Apache::edit::text_arg('Size:','size',$token,'5')."</td></tr>";  
     $result.=&Apache::edit::end_table;  
   } elsif ($target eq 'modified') {  
     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'size');  
     if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }  
   }  
   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 "";      return "";
 }  }
   
 sub start_datasubmission {  sub start_hiddenline {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   my $id = &Apache::response::start_response($parstack,$safeeval);      my $result = "";
   my $result;      if ($target eq 'web') {
   if ($target eq 'meta') {   $Apache::lonxml::evaluate--;
     $result = &Apache::response::meta_stores_write($token->[2]->{'name'},   if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
    $token->[2]->{'type'},      my $partid=$Apache::inputtags::part;
    $token->[2]->{'display'});      my $id=$Apache::inputtags::response[-1];
     $result .= &Apache::response::meta_package_write('datasubmission');      my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"},'<>&"');
   }      if ($Apache::lonhomework::type ne 'exam') {
   return $result;   $result= '<input type="hidden" name="HWVAL_'.$id.'" value="'.
 }      $oldresponse.'" />';
       }
 sub end_datasubmission {   }
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      } elsif ($target eq 'edit') {
   my $result;   $result=&Apache::edit::tag_start($target,$token);
   if ( $target eq 'web' ) {   $result.=&Apache::edit::end_table;
   } elsif ($target eq 'grade' ) {      }
     if ( defined $ENV{'form.submitted'}) {      return $result;
       &Apache::response::setup_params('datasubmission');  }
       my $partid = $Apache::inputtags::part;  
       my $id = $Apache::inputtags::response['-1'];  sub end_hiddenline {
       my $response = $ENV{'form.HWVAL'.$id};      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
       my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);      if    ($target eq 'web') { $Apache::lonxml::evaluate++; }
       if ( $response =~ /[^\s]/) {      elsif ($target eq 'edit') { return ('','no'); }
  $Apache::lonhomework::results{"resource.$partid.$id.$name"}=      return "";
   $response;  }
       }  
     }  # $part -> partid
   }  # $id -> responseid
   &Apache::response::end_response;  # $uploadefiletypes -> comma seperated list of extensions allowed or * for any
   return $result;  # $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 />';
    my $uploadedfile= &HTML::Entities::encode($Apache::lonhomework::history{"resource.$part.$id.uploadedfile"},'<>&"');
   
    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>';
       $result.=&mt('Currently submitted: <tt>[_1]</tt>',$curfile);
    } else {
       #$result.=&mt('(Hand in a file you have prepared on your computer)');
    }
       }
       if ( $which eq 'both') { 
    $result.='<br />'.'<strong>'.&mt('OR:').'</strong><br />';
       }
       if ($which eq 'portfolioonly' || $which eq 'both') { 
    $result.=$extratext.'<a href='."'".'javascript:void(window.open("/adm/portfolio?mode=selectfile&amp;fieldname=HWPORT'.$jspart.'_'.$id.'","cat","height=600,width=800,scrollbars=1,resizable=1,menubar=2,location=1"))'."'".'>'.
       &mt('Select Portfolio Files').'</a><br />'.
       '<input type="text" size="50" name="HWPORT'.$jspart.'_'.$id.'" value="" />'.
       '<br />';
    if ($Apache::lonhomework::history{"resource.$part.$id.portfiles"}=~/[^\s]/){
       my @filelist;
       foreach my $file (split(',',&Apache::lonnet::unescape($Apache::lonhomework::history{"resource.$part.$id.portfiles"}))) {
    my (undef,undef,$domain,$user)=&Apache::lonxml::whichuser();
    my $url="/uploaded/$domain/$user/portfolio$file";
    my $icon=&Apache::loncommon::icon($url);
    push(@filelist,'<a href="'.$url.'"><img src="'.$icon.
        '" border="0" />'.$file.'</a>');
       }
       $result.=&mt("Portfolio files previously selected: <strong>[_1]</strong>",join(', ',@filelist));
    }
       }
       $result.='</td></tr>'; 
       return $result;
   }
   
   sub checkstatus {
       my ($value,$awardref,$msgref)=@_;
       for (my $i=0;$i<=$#$awardref;$i++) {
    if ($$awardref[$i] eq $value) {
       return ($$awardref[$i],$$msgref[$i]);
    }
       }
       return(undef,undef);
   }
   
   sub valid_award {
       my ($award) =@_;
       foreach my $possibleaward ('MISSING_ANSWER', 'ERROR', 'NO_RESPONSE',
          'TOO_LONG', 'UNIT_INVALID_INSTRUCTOR',
          'UNIT_INVALID_STUDENT', 'UNIT_IRRECONCIBLE',
          'UNIT_FAIL', 'NO_UNIT',
          'UNIT_NOTNEEDED', 'WANTED_NUMERIC',
          'BAD_FORMULA', 'SIG_FAIL', 'INCORRECT', 
          'MISORDERED_RANK', 'INVALID_FILETYPE',
          'DRAFT', 'SUBMITTED', 'ASSIGNED_SCORE',
          'APPROX_ANS', 'EXACT_ANS','COMMA_FAIL') {
    if ($award eq $possibleaward) { return 1; }
       }
       return 0;
 }  }
   
 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;
     my $blankcount;      if ($#$awardref == -1) { $result = "NO_RESPONSE"; }
     foreach $award (@_) {      if ($result eq '' ) {
       if ($award eq '') {   my $blankcount;
  $result='MISSING_ANSWER';   foreach $award (@$awardref) {
  $blankcount++;      if ($award eq '') {
       }   $result='MISSING_ANSWER';
     }   $blankcount++;
     if ($blankcount == ($#_ + 1)) { $result = 'NO_RESPONSE'; }      }
   }   }
   if ($result eq '' ) {   if ($blankcount == ($#$awardref + 1)) { $result = 'NO_RESPONSE'; }
     foreach $award (@_) { if ($award eq 'MISSING_ANSWER') {$result='MISSING_ANSWER'; last;}}      }
   }      if (defined($result)) { return ($result,$msg); }
   if ($result eq '' ) {      foreach my $possibleaward ('MISSING_ANSWER', 'ERROR', 'NO_RESPONSE',
     foreach $award (@_) { if ($award eq 'ERROR') {$result='ERROR'; last;}}         'TOO_LONG', 'UNIT_INVALID_INSTRUCTOR',
   }         'UNIT_INVALID_STUDENT', 'UNIT_IRRECONCIBLE',
   if ($result eq '' ) {         'UNIT_FAIL', 'NO_UNIT',
     foreach $award (@_) { if ($award eq 'NO_RESPONSE') {$result='NO_RESPONSE'; last;} }         'UNIT_NOTNEEDED', 'WANTED_NUMERIC',
   }         'BAD_FORMULA', 'SIG_FAIL', 'INCORRECT', 
          'MISORDERED_RANK', 'INVALID_FILETYPE',
   if ($result eq '' ) {         'DRAFT', 'SUBMITTED', 'ASSIGNED_SCORE',
     foreach $award (@_) {          'APPROX_ANS', 'EXACT_ANS','COMMA_FAIL') {
       if ($award eq 'UNIT_FAIL' ||   ($result,$msg)=&checkstatus($possibleaward,$awardref,$msgref);
   $award eq 'NO_UNIT' ||   if (defined($result)) { return ($result,$msg); }
   $award eq 'UNIT_NOTNEEDED') {      }
  $result=$award; last;      return ('ERROR',undef);
       }  
     }  
   }  
   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 'SUBMITTED') {$result=$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,$previous)=@_;      my ($award,$awarded,$awardmsg,$solved,$previous,$target)=@_;
   my $message='';      my $message='';
   my $button=0;      my $button=0;
   my $previousmsg;      my $previousmsg;
       my $bgcolor='orange';
   if ($previous) { $previousmsg='You have entered that answer before'; }      my $added_computer_text=0;
       my %possiblecolors =
   if      ($solved =~ /^correct/) {   ( 'correct' => '#aaffaa',
     $message = "<b>You are correct.</b> Your receipt is ".    'charged_try' => '#ffaaaa',
       &Apache::lonnet::receipt;    'not_charged_try' => '#ffffaa',
     $button=0;    'no_message' => '#fffff',
     $previousmsg='';    );
   } elsif ($solved =~ /^excused/) {  
     $message = "<b>You are excused from the problem.</b>";      if ($previous) { $previousmsg=&mt('You have entered that answer before'); }
     $button=0;      
     $previousmsg='';      if      ($solved =~ /^correct/) {
   } elsif ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS' ) {   $bgcolor=$possiblecolors{'correct'};
     if ($solved =~ /^incorrect/ || $solved eq '') {   $message=&mt('You are correct.');
       $message = "Incorrect";   if ($awarded < 1 && $awarded > 0) {
       $button=1;      $message=&mt('You are partially correct.');
       $bgcolor=$possiblecolors{'not_charged_try'};
    } elsif ($awarded < 1) {
       $message=&mt('Incorrect.');
       $bgcolor=$possiblecolors{'charged_try'};
    }
    if ($env{'request.filename'} =~ 
       m|/res/lib/templates/examupload.problem$|) {
       $message = &mt("A score has been assigned.");
       $added_computer_text=1;
    } else {
       if ($target eq 'tex') {
    $message = '\textbf{'.$message.'}';
       } else {
    $message = "<b>".$message."</b>";
    $message.=" ".&mt("Computer's answer now shown above.");
       }
       $added_computer_text=1;
       unless ($env{'course.'.
        $env{'request.course.id'}.
        '.disable_receipt_display'} eq 'yes') { 
    $message.=(($target eq 'web')?'<br />':' ').
       &mt('Your receipt is').' '.&Apache::lonnet::receipt($Apache::inputtags::part).
       (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'');
       }
    }
    $button=0;
    $previousmsg='';
       } elsif ($solved =~ /^excused/) {
    if ($target eq 'tex') {
       $message = ' \textbf{'.&mt('You are excused from the problem.').'} ';
    } else {
       $message = "<b>".&mt('You are excused from the problem.')."</b>";
    }
    $bgcolor=$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'};
       $button=1;
    } else {
       if ($target eq 'tex') {
    $message = '\textbf{'.&mt('You are correct.').'}';
       } else {
    $message = "<b>".&mt('You are correct.')."</b>";
    $message.=" ".&mt("Computer's answer now shown above.");
       }
       $added_computer_text=1;
       unless ($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('Submission won\'t be graded. The type of file submitted is not allowed.');
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'SIG_FAIL') {
    my ($used,$min,$max)=split(':',$awardmsg);
    my $word;
    if ($used < $min) { $word=&mt('more'); }
    if ($used > $max) { $word=&mt('fewer'); }
    $message = &mt("Submission not graded.  Use [_2] digits.",$used,$word);
    $bgcolor=$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') {
    $message = &mt('Unable to interpret units. Computer reads units as "[_1]".',&markup_unit($awardmsg,$target));
    if ($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') {
    $message = &mt('Incompatible units. No conversion found between "[_1]" and the required units.',&markup_unit($awardmsg,$target));
    if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units');} 
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'UNIT_NOTNEEDED') {
    $message = &mt('Only a number required. Computer reads units of "[_1]".',&markup_unit($awardmsg,$target));
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($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 'COMMA_FAIL') {
    $message = &mt("Proper comma separation is required").'.';
    $bgcolor=$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 = &mt("A draft copy has been saved.");
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
       } elsif ($award eq 'ASSIGNED_SCORE') {
    $message = &mt("A score has been assigned.");
    $bgcolor=$possiblecolors{'correct'};
    $button=0;
       } elsif ($award eq '') {
    $bgcolor=$possiblecolors{'not_charged_try'};
    $button=1;
     } else {      } else {
       $message = "<b>You are correct.</b> Your receipt is ".   $message = &mt("Unknown message").": $award";
  &Apache::lonnet::receipt;   $button=1;
       $button=0;      }
       $previousmsg='';      if (lc($Apache::lonhomework::problemstatus) eq 'no'  && 
     }   $Apache::inputtags::status[-1] ne 'SHOW_ANSWER') {
   } elsif ($award eq 'NO_RESPONSE') {   $message = &mt("Answer Submitted: Your final submission will be graded after the due date.");
     $message = '';   $bgcolor=$possiblecolors{'correct'};
     $button=1;   $button=1;
   } elsif ($award eq 'MISSING_ANSWER') {      }
     $message = 'Some parts were not submitted';      if ($Apache::inputtags::status[-1] eq 'SHOW_ANSWER' && 
     $button = 1;   !$added_computer_text && $target ne 'tex') {
   } elsif ($award eq 'WANTED_NUMERIC') {   $message.=" ".&mt("Computer's answer now shown above.");
     $message = "This question expects a numeric answer";   $added_computer_text=1;
     $button=1;      }
   } elsif ($award eq 'SIG_FAIL') {      return ($button,$bgcolor,$message,$previousmsg);
     $message = "Please adjust significant figures.";# you provided %s significant figures";  }
     $button=1;  
   } elsif ($award eq 'UNIT_FAIL') {  sub markup_unit {
     $message = "Units incorrect."; #Computer reads units as %s";      my ($unit,$target)=@_;
     $button=1;      if ($target eq 'tex') {
   } elsif ($award eq 'UNIT_NOTNEEDED') {   return '\texttt{'.&Apache::lonxml::latex_special_symbols($unit).'}'; 
     $message = "Only a number required.";# Computer reads units of %s";      } else {
     $button=1;   return "<tt>".$unit."</tt>";
   } elsif ($award eq 'NO_UNIT') {      }
     $message = "Units required";  
     $button=1;  
   } elsif ($award eq 'BAD_FORMULA') {  
     $message = "Unable to understand formula";  
     $button=1;  
   } elsif ($award eq 'INCORRECT') {  
     $message = "Incorrect";  
     $button=1;  
   } elsif ($award eq 'SUBMITTED') {  
     $message = "Your submission has been recorded.";  
     $button=1;  
   } else {  
     $message = "Unknown message: $award";  
     $button=1;  
   }  
   return ($button,$message,$previousmsg);  
 }  }
   
 sub setgradedata {  sub removealldata {
   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\./) && ($key !~ /\.collaborators$/)) {
     $Apache::lonhomework::results{"resource.$id.afterduedate"}=$award;      &Apache::lonxml::debug("Removing $key");
     return '';      delete($Apache::lonhomework::results{$key});
   } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} !~   }
        /^correct/ ) {  
     #handle assignment of tries and solved status  
     if ($Apache::lonhomework::history{"resource.$id.afterduedate"}) {  
       $Apache::lonhomework::results{"resource.$id.afterduedate"}='';  
     }  
     if ( $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"} =  
  'correct_by_student';  
       $Apache::lonhomework::results{"resource.$id.awarded"} = '1';  
     } elsif ( $award eq 'INCORRECT' ) {  
       $Apache::lonhomework::results{"resource.$id.tries"} =  
  $Apache::lonhomework::history{"resource.$id.tries"} + 1;  
       $Apache::lonhomework::results{"resource.$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 'NO_RESPONSE' ) {  
       return '';  
     } else {  
       $Apache::lonhomework::results{"resource.$id.solved"} =  
  'incorrect_attempted';  
     }      }
   }
   
     # check if this was a previous submission if it was delete the  sub hidealldata {
     # unneeded data and update the previously_used attribute      my ($id)=@_;
     if ( $previously_used eq 'PREVIOUSLY_USED') {      foreach my $key (keys(%Apache::lonhomework::results)) {
       delete($Apache::lonhomework::results{"resource.$id.tries"});   if (($key =~ /^resource\.\Q$id\E\./) && ($key !~ /\.collaborators$/)) {
       $Apache::lonhomework::results{"resource.$id.previous"} = '1';      &Apache::lonxml::debug("Hidding $key");
     } elsif ( $previously_used eq 'PREVIOUSLY_LAST') {      my $newkey=$key;
       #delete all data as they student didn't do anything      $newkey=~s/^(resource\.\Q$id\E\.[^\.]+\.)(.*)$/${1}hidden${2}/;
       foreach my $key (keys(%Apache::lonhomework::results)) {      $Apache::lonhomework::results{$newkey}=
  if ($key =~ /^resource\.$id\./) {   $Apache::lonhomework::results{$key};
   &Apache::lonxml::debug("Removing $key");      delete($Apache::lonhomework::results{$key});
   delete($Apache::lonhomework::results{$key});   }
  }      }
       }  }
       #and since they didn't do anything we were never here  
       return '';  sub setgradedata {
     } else {      my ($award,$msg,$id,$previously_used) = @_;
       $Apache::lonhomework::results{"resource.$id.previous"} = '0';      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 (!$Apache::lonhomework::scantronmode &&
    $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') {
           # the student doesn't already have it correct,
    # or we are in a mode (scantron orno problem status) where a correct 
           # can become incorrect
    # handle assignment of tries and solved status
    my $solvemsg;
    if ($Apache::lonhomework::scantronmode) {
       $solvemsg='correct_by_scantron';
    } else {
       $solvemsg='correct_by_student';
    }
    if ($Apache::lonhomework::history{"resource.$id.afterduedate"}) {
       $Apache::lonhomework::results{"resource.$id.afterduedate"}='';
    }
    if ( $award eq 'ASSIGNED_SCORE') {
       $Apache::lonhomework::results{"resource.$id.tries"} =
    $Apache::lonhomework::history{"resource.$id.tries"} + 1;
       $Apache::lonhomework::results{"resource.$id.solved"} =
    $solvemsg;
       my $numawards=scalar(@Apache::inputtags::response);
       $Apache::lonhomework::results{"resource.$id.awarded"} = 0;
       foreach my $res (@Apache::inputtags::response) {
    $Apache::lonhomework::results{"resource.$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::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);
    #and since they didn't do anything we were never here
    return '';
     }      }
   }      $Apache::lonhomework::results{"resource.$id.award"} = $award;
   $Apache::lonhomework::results{"resource.$id.award"} = $award;  
 }  }
   
 sub grade {  sub grade {
   my ($target) = @_;      my ($target) = @_;
   my $id = $Apache::inputtags::part;      my $id = $Apache::inputtags::part;
   my $response='';      my $response='';
   if ( defined $ENV{'form.submitted'}) {      if ( defined $env{'form.submitted'}) {
     my @awards = ();   my (@awards,@msgs);
     foreach $response (@Apache::inputtags::responselist) {   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 ) {   }
       $previously_used = 'PREVIOUSLY_LAST';   my ($finalaward,$msg) = &finalizeawards(\@awards,\@msgs);
       foreach my $value (@Apache::inputtags::previous) {   my $previously_used;
  if ($value eq 'PREVIOUSLY_USED' ) {   if ( $#Apache::inputtags::previous eq $#awards ) {
   $previously_used = $value;      my $match=0;
   last;      my @matches;
  }      foreach my $versionar (@Apache::inputtags::previous_version) {
       }   foreach my $version (@$versionar) {
     }      $matches[$version]++;
     &Apache::lonxml::debug("final award $finalaward, $previously_used");   }
     &setgradedata($finalaward,$id,$previously_used);      }
   }      foreach my $elem (@matches) {if ($elem eq ($#awards+1)) {$match=1;}}
   return '';      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 '';
 }  }
   
 sub gradestatus {  sub gradestatus {
   my ($id) = @_;      my ($id,$target) = @_;
   my $showbutton = 1;      my $showbutton = 1;
   my $message = '';      my $bgcolor = '';
   my $latemessage = '';      my $message = '';
   my $trystr='';      my $latemessage = '';
   my $button='';      my $trystr='';
   my $previousmsg='';      my $button='';
       my $previousmsg='';
   my $status = $Apache::inputtags::status['-1'];  
   &Apache::lonxml::debug("gradestatus has :$status:");      my $status = $Apache::inputtags::status['-1'];
   if ( $status ne 'CLOSED' ) {        &Apache::lonxml::debug("gradestatus has :$status:");
     my $award = $Apache::lonhomework::history{"resource.$id.award"};      if ( $status ne 'CLOSED' && $status ne 'UNAVAILABLE' &&
     my $solved = $Apache::lonhomework::history{"resource.$id.solved"};   $status ne 'INVALID_ACCESS') {  
     my $previous = $Apache::lonhomework::history{"resource.$id.previous"};   my $award = $Apache::lonhomework::history{"resource.$id.award"};
     &Apache::lonxml::debug("Found Award |$award|$solved|");   my $awarded = $Apache::lonhomework::history{"resource.$id.awarded"};
     if ( $award ne '' ) {   my $solved = $Apache::lonhomework::history{"resource.$id.solved"};
       &Apache::lonxml::debug('Getting message');   my $previous = $Apache::lonhomework::history{"resource.$id.previous"};
       ($showbutton,$message,$previousmsg) =   my $awardmsg = $Apache::lonhomework::history{"resource.$id.awardmsg"};
  &decideoutput($award,$solved,$previous);   &Apache::lonxml::debug("Found Award |$award|$solved|$awardmsg");
       $message="<td bgcolor=\"#aaffaa\">$message</td>";   if ( $award ne '' || $solved ne '' || $status eq 'SHOW_ANSWER') {
       if ($previousmsg) {      &Apache::lonxml::debug('Getting message');
  $previousmsg="<td bgcolor=\"#ffaaaa\">$previousmsg</td>";      ($showbutton,$bgcolor,$message,$previousmsg) =
       }   &decideoutput($award,$awarded,$awardmsg,$solved,$previous,
     }        $target);
     my $tries = $Apache::lonhomework::history{"resource.$id.tries"};      if ($target eq 'tex') {
     my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");   $message='\vskip 2 mm '.$message.' ';
     &Apache::lonxml::debug("got maxtries of :$maxtries:");      } else {
     if ( $tries eq '' ) { $tries = '0'; }   $message="<td bgcolor=\"$bgcolor\">$message</td>";
     if ( $maxtries eq '' ) { $maxtries = '2'; }    if ($previousmsg) {
     if ( $maxtries eq 'con_lost' ) { $maxtries = '0'; }       $previousmsg="<td bgcolor=\"#aaaaff\">$previousmsg</td>";
     if ( $showbutton ) {   }
       $trystr = "<td>Tries $tries/$maxtries</td>";      }
     }   }
     if ( $status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') {$showbutton = 0;}   my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
     if ( $showbutton ) {    my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
       $button = '<br /><input type="submit" name="submit" value="Submit Answer" />';   &Apache::lonxml::debug("got maxtries of :$maxtries:");
     }   #if tries are set to negative turn off the Tries/Button and messages
     if ($Apache::lonhomework::history{"resource.$id.afterduedate"}) {   if (defined($maxtries) && $maxtries < 0) { return ''; }
       #last submissions was after due date   if ( $tries eq '' ) { $tries = '0'; }
       $latemessage="<td bgcolor=\"#ffaaaa\">The last submission was after the Due Date</td>";   if ( $maxtries eq '' ) { $maxtries = '2'; } 
     }   if ( $maxtries eq 'con_lost' ) { $maxtries = '0'; } 
   }   my $tries_text=&mt('Tries');
   my $output= $previousmsg.$latemessage.$message.$trystr;   if ( $Apache::lonhomework::type eq 'survey' ||
   if ($output =~ /^\s*$/) {       $Apache::lonhomework::parsing_a_task) {
     return $button;      $tries_text=&mt('Submissions');
   } else {   }
     return $button.'<table><tr>'.$output.'</tr></table>';   if ( $showbutton ) {
   }      if ($target eq 'tex') {
    if ($env{'request.state'} ne "construct" && $Apache::lonhomework::type ne 'exam' && $env{'form.suppress_tries'} ne 'yes') {
       $trystr = ' {\vskip 1 mm \small \textit{'.$tries_text.'} '.$tries.'/'.$maxtries.'} \vskip 2 mm ';
    } else {
       $trystr = '\vskip 0 mm ';
    }
       } else {
    $trystr = "<td><nobr>".$tries_text." $tries";
    if ($Apache::lonhomework::parsing_a_task) {
    } elsif($env{'request.state'} ne 'construct') {
       $trystr.="/$maxtries";
    } else {
       if (defined($Apache::inputtags::params{'maxtries'})) {
    $trystr.="/".$Apache::inputtags::params{'maxtries'};
       }
    }
    $trystr.="</nobr></td>";
       }
    }
    if ( $status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') {$showbutton = 0;}
    if ( $showbutton ) { 
       if ($target ne 'tex') {
    $button = '<input type="submit" name="submit_'.$id.'" value="'.&mt('Submit Answer').'" />';
       }
    }
    if ($Apache::lonhomework::history{"resource.$id.afterduedate"}) {
       #last submissions was after due date
       $latemessage=&mt(' The last submission was after the Due Date ');;
       if ($target eq 'web') {
    $latemessage='<td bgcolor="#ffaaaa">'.$latemessage.'</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>';
    }
       }
 }  }
 1;  1;
 __END__  __END__
Removed from v.1.57  
changed lines
  Added in v.1.179

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