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Diff for /loncom/homework/radiobuttonresponse.pm between versions 1.79 and 1.147

version 1.79, 2003/10/27 20:04:34 version 1.147, 2010/12/19 04:24:29
Line 18 Line 18
 # GNU General Public License for more details.  # GNU General Public License for more details.
 #  #
 # You should have received a copy of the GNU General Public License  # You should have received a copy of the GNU General Public License
 # along with LON-CAPA; if not, write to the Free Software  # along with LON-CAPA; if not, write to the Free Software# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA  
 #  #
 # /home/httpd/html/adm/gpl.txt  # /home/httpd/html/adm/gpl.txt
 #  #
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  #
   
   
   
 package Apache::radiobuttonresponse;  package Apache::radiobuttonresponse;
 use strict;  use strict;
 use HTML::Entities();  use HTML::Entities();
   use Apache::lonlocal;
   use Apache::lonnet;
   use Apache::response;
   
   my $default_bubbles_per_line = 10;
   
   
 BEGIN {  BEGIN {
   &Apache::lonxml::register('Apache::radiobuttonresponse',('radiobuttonresponse'));      &Apache::lonxml::register('Apache::radiobuttonresponse',('radiobuttonresponse'));
   }
   
   sub bubble_line_count {
       my ($numfoils, $bubbles_per_line) = @_;
       my $bubble_lines;
       $bubble_lines = int($numfoils / $bubbles_per_line);
       if (($numfoils % $bubbles_per_line) != 0) {
    $bubble_lines++;
       }
       return $bubble_lines;
       
 }  }
   
   
 sub start_radiobuttonresponse {  sub start_radiobuttonresponse {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   my $result;      my $result;
   #when in a radiobutton response use these  
   &Apache::lonxml::register('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup'));      #when in a radiobutton response use these
   push (@Apache::lonxml::namespace,'radiobuttonresponse');      &Apache::lonxml::register('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup'));
   my $id = &Apache::response::start_response($parstack,$safeeval);      push (@Apache::lonxml::namespace,'radiobuttonresponse');
   %Apache::hint::radiobutton=();      my $id = &Apache::response::start_response($parstack,$safeeval);
   if ($target eq 'meta') {  
     $result=&Apache::response::meta_package_write('radiobuttonresponse');      %Apache::hint::radiobutton=();
   } elsif ($target eq 'edit' ) {      undef(%Apache::response::foilnames);
     $result.=&Apache::edit::start_table($token).      if ($target eq 'meta') {
  '<tr><td>'.&Apache::lonxml::description($token)."</td><td>Delete:".   $result=&Apache::response::meta_package_write('radiobuttonresponse');
  &Apache::edit::deletelist($target,$token)      } elsif ($target eq 'edit' ) {
  ."</td><td>&nbsp".&Apache::edit::end_row()   $result.=&Apache::edit::start_table($token)
         .&Apache::edit::start_spanning_row();             .'<tr><td>'.&Apache::lonxml::description($token)
              .&Apache::loncommon::help_open_topic('Radio_Response_Problems')
     $result.=             .'</td>'
  &Apache::edit::text_arg('Max Number Of Shown Foils:','max',$token,'4').             .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
  &Apache::edit::select_arg('Randomize Foil Order','randomize',             .&Apache::edit::deletelist($target,$token)
   ['yes','no'],$token).             .'</span></td>'
         &Apache::edit::end_row().&Apache::edit::start_spanning_row()."\n";             .'<td>&nbsp;'.&Apache::edit::end_row()
   } elsif ($target eq 'modified') {             .&Apache::edit::start_spanning_row();
     my $constructtag=&Apache::edit::get_new_args($token,$parstack,   $result.=
  $safeeval,'max','randomize');      &Apache::edit::text_arg('Max Number Of Shown Foils:','max',
     if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }      $token,'4').'&nbsp;'x 3 .
   } elsif ($target eq 'tex') {      &Apache::edit::select_arg('Randomize Foil Order:','randomize',
       my $type=&Apache::lonxml::get_param('TeXtype',$parstack,$safeeval,undef,0);        ['yes','no'],$token).'&nbsp;'x 3 .
       if ($type eq '1') {      &Apache::edit::select_arg('Display Direction:','direction',
   $result .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}';        ['vertical','horizontal'],$token).
       } elsif ($type eq 'A') {        &Apache::edit::end_row().
   $result .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}';        &Apache::edit::start_spanning_row()."\n";
       } elsif ($type eq 'a') {      } elsif ($target eq 'modified') {
   $result .= ' \renewcommand{\labelenumi}{\alph{enumi}.}';   my $constructtag=&Apache::edit::get_new_args($token,$parstack,
       } elsif ($type eq 'i') {       $safeeval,'max',
   $result .= ' \renewcommand{\labelenumi}{\roman{enumi}.}';       'randomize','direction');
       }   if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
       $result .= '\begin{enumerate}';      } elsif ($target eq 'tex') {
   } elsif ($target eq 'analyze') {   my $type=&Apache::lonxml::get_param('TeXtype',$parstack,$safeeval,
       my $part_id="$Apache::inputtags::part.$id";      undef,0);
       push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);   if ($type eq '1') {
   }      $result .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}';
   return $result;   } elsif ($type eq 'A') {
       $result .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}';
    } elsif ($type eq 'a') {
       $result .= ' \renewcommand{\labelenumi}{\alph{enumi}.}';
    } elsif ($type eq 'i') {
       $result .= ' \renewcommand{\labelenumi}{\roman{enumi}.}';
    } else {
       $result .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}';
    }
           if($env{'form.pdfFormFields'} eq 'yes' && $Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
               $result .= '\begin{itemize}';
           } else {
               $result .= '\begin{enumerate}';
           }
       } elsif ($target eq 'analyze') {
    my $part_id="$Apache::inputtags::part.$id";
           $Apache::lonhomework::analyze{"$part_id.type"} = 'radiobuttonresponse';
    push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
       }
       return $result;
 }  }
   
 sub end_radiobuttonresponse {  sub end_radiobuttonresponse {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   my $result;      my $result;
   if ($target eq 'edit') { $result=&Apache::edit::end_table(); }      if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
   if ($target eq 'tex') { $result .= '\end{enumerate}'; }      if ($target eq 'tex' ) {
   &Apache::response::end_response;          if($env{'form.pdfFormFields'} eq 'yes' and $Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
   pop @Apache::lonxml::namespace;              $result .= '\end{itemize}';
   &Apache::lonxml::deregister('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup'));          } else {
   return $result;              $result .= '\end{enumerate}';
           }
       }
       &Apache::response::end_response;
       pop @Apache::lonxml::namespace;
       &Apache::lonxml::deregister('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup'));
       undef(%Apache::response::foilnames);
       return $result;
 }  }
   
 %Apache::response::foilgroup=();  %Apache::response::foilgroup=();
 sub start_foilgroup {  sub start_foilgroup {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   my $result;      my $result;
   %Apache::response::foilgroup=();      %Apache::response::foilgroup=();
   $Apache::radiobuttonresponse::conceptgroup=0;      $Apache::radiobuttonresponse::conceptgroup=0;
   &Apache::response::setrandomnumber();      &Apache::response::pushrandomnumber(undef,$target);
   if ($target eq 'tex' && $Apache::lonhomework::type eq 'exam') {      if ($target eq 'tex' && $Apache::lonhomework::type eq 'exam') {
       $result.='\item[\textbf{'.$Apache::lonxml::counter.'}.]';   $result.='\item[\textbf{'.$Apache::lonxml::counter.'}.]';
   }      }
   return $result;      return $result;
 }  }
   
 sub storesurvey {  sub storesurvey {
   if ( !defined($ENV{'form.submitted'})) { return ''; }      my ($style) = @_;
   my $response = $ENV{'form.HWVAL_'.$Apache::inputtags::response['-1']};      if ( !&Apache::response::submitted() ) { return ''; }
   &Apache::lonxml::debug("Here I am!:$response:");      my $response = $env{'form.HWVAL_'.$Apache::inputtags::response['-1']};
   if ( $response !~ /[0-9]+/) { return ''; }      &Apache::lonxml::debug("Here I am!:$response:");
   my $id = $Apache::inputtags::response['-1'];      if ( $response !~ /[0-9]+/) { return ''; }
   my @whichfoils=@{ $Apache::response::foilgroup{'names'} };      my $part = $Apache::inputtags::part;
   my %responsehash;      my $id = $Apache::inputtags::response['-1'];
   $responsehash{$whichfoils[$response]}=$response;      my @whichfoils=@{ $Apache::response::foilgroup{'names'} };
   $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.submission"}=&Apache::lonnet::hash2str(%responsehash);      my %responsehash;
   $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}='SUBMITTED';      $responsehash{$whichfoils[$response]}=$response;
   &Apache::lonxml::debug("submitted a $response<br />\n");      my $responsestr=&Apache::lonnet::hash2str(%responsehash);
   return '';      $Apache::lonhomework::results{"resource.$part.$id.submission"}=
    $responsestr;
       my %previous=&Apache::response::check_for_previous($responsestr,$part,$id);
       my $ad;
       if ($style eq 'anonsurvey') {
           $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='ANONYMOUS';
       } elsif ($style eq 'anonsurveycred') {
           $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='ANONYMOUS_CREDIT';
       } elsif ($style eq 'surveycred') {
           $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED_CREDIT';
       } else {
           $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED';
       }
       &Apache::response::handle_previous(\%previous,$ad);
       &Apache::lonxml::debug("submitted a $response<br />\n");
       return '';
 }  }
   
   
 sub grade_response {  sub grade_response {
   my ($max,$randomize)=@_;      my ($answer, $whichfoils, $bubbles_per_line)=@_;
   #keep the random numbers the same must always call this  
   my ($answer,@whichfoils)=&whichfoils($max,$randomize);      if ( !&Apache::response::submitted() ) { return; }
   if (!defined($ENV{'form.submitted'})) { return; }      my $response;
   my $response;      
   if ($ENV{'form.submitted'} eq 'scantron') {      if ($env{'form.submitted'} eq 'scantron') {
       $response=&Apache::response::getresponse();   $response = &Apache::response::getresponse(1,undef,
   } else {     &bubble_line_count(scalar(@{ $whichfoils}),
       $response = $ENV{'form.HWVAL_'.$Apache::inputtags::response['-1']};        $bubbles_per_line),
   }     $bubbles_per_line);
   if ( $response !~ /[0-9]+/) { return; }  
   my $part=$Apache::inputtags::part;      } else {
   my $id = $Apache::inputtags::response['-1'];   $response = $env{'form.HWVAL_'.$Apache::inputtags::response['-1']};
   my %responsehash;      }
   $responsehash{$whichfoils[$response]}=$response;  
   my $responsestr=&Apache::lonnet::hash2str(%responsehash);  
   my %previous=&Apache::response::check_for_previous($responsestr,      if ( $response !~ /[0-9]+/) { return; }
      $part,$id);      my $part=$Apache::inputtags::part;
   $Apache::lonhomework::results{"resource.$part.$id.submission"}=      my $id = $Apache::inputtags::response['-1'];
     $responsestr;      my %responsehash;
   &Apache::lonxml::debug("submitted a $response<br />\n");      $responsehash{$whichfoils->[$response]}=$response;
   my $ad;      my $responsestr=&Apache::lonnet::hash2str(%responsehash);
   if ($response == $answer) {      my %previous=&Apache::response::check_for_previous($responsestr,
     $ad='EXACT_ANS';         $part,$id);
   } else {      $Apache::lonhomework::results{"resource.$part.$id.submission"}=
     $ad='INCORRECT';   $responsestr;
   }      &Apache::lonxml::debug("submitted a $response<br />\n");
   $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;      my $ad;
   &Apache::response::handle_previous(\%previous,$ad);      if ($response == $answer) {
    $ad='EXACT_ANS';
       } else {
    $ad='INCORRECT';
       }
       $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
       &Apache::response::handle_previous(\%previous,$ad);
 }  }
   
 sub end_foilgroup {  sub end_foilgroup {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   
   my $result;      my $result;
   if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||      my $bubble_lines;
       $target eq 'tex' || $target eq 'analyze') {      my $bubbles_per_line;
     my $style = $Apache::lonhomework::type;      my $answer_count;
     if ( $style eq 'survey'  && $target ne 'analyze') {      my $id   = $Apache::inputtags::response['-1'];
       if ($target eq 'web' || $target eq 'answer' || $target eq 'tex') {      my $part = $Apache::inputtags::part;
  $result=&displayallfoils();      $bubbles_per_line = 
       } elsif ( $target eq 'grade' ) {   &Apache::response::get_response_param($Apache::inputtags::part."_$id",
  $result=&storesurvey();        'numbubbles',
       }        $default_bubbles_per_line);
     } else {  
       my $name;  
       my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');      if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
       my $randomize = &Apache::lonxml::get_param('randomize',$parstack,   $target eq 'tex' || $target eq 'analyze') {
  $safeeval,'-2');   my $style = $Apache::lonhomework::type;
       if ($target eq 'web' || $target eq 'tex') {   my $direction = &Apache::lonxml::get_param('direction',$parstack,
  $result=&displayfoils($target,$max,$randomize);     $safeeval,'-2');
       } elsif ($target eq 'answer' ) {   if ( (($style eq 'survey') || ($style eq 'surveycred') || 
  $result=&displayanswers($max,$randomize);                ($style eq 'anonsurvey') || ($style eq 'anonsurveycred')) 
       } elsif ( $target eq 'grade') {               && ($target ne 'analyze')) {
  &grade_response($max,$randomize);      if ($target eq 'web' || $target eq 'tex') {
       }  elsif ( $target eq 'analyze') {   $result=&displayallfoils($direction, $target);
   my @shown = &whichfoils($max,$randomize);      } elsif ( $target eq 'answer' ) {
   &Apache::response::analyze_store_foilgroup(\@shown,   $result=&displayallanswers();
   ['text','value','location']);      } elsif ( $target eq 'grade' ) {
   my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";   $result=&storesurvey($style);
   push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },      }
  ('true','false'));      $answer_count = scalar(@{$Apache::response::foilgroup{'names'}});
       }  
     }   } else {
   }  
   &Apache::lonxml::increment_counter();      my $name;
   return $result;      my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,
    '-2');
       my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
          $safeeval,'-2');
       my ($answer, @shown) = &whichfoils($max, $randomize);
       $answer_count = scalar(@shown);
   
       if ($target eq 'web' || $target eq 'tex') {
    $result=&displayfoils($target,
         $answer, \@shown,
         $direction,
         $bubbles_per_line);
       } elsif ($target eq 'answer' ) {
    $result=&displayanswers($answer, \@shown, $bubbles_per_line);
       } elsif ( $target eq 'grade') {
    &grade_response($answer, \@shown, $bubbles_per_line);
       }  elsif ( $target eq 'analyze') {
    my $bubble_lines = &bubble_line_count($answer_count, 
         $bubbles_per_line);
    &Apache::response::analyze_store_foilgroup(\@shown,
      ['text','value','location']);
    my $part_id="$part.$id";
    push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },
         ('true','false'));
   
       }
    }
    $Apache::lonxml::post_evaluate=0;
       }
       if ($target eq 'web') {
    &Apache::response::setup_prior_tries_hash(\&format_prior_answer,
     [\%Apache::response::foilgroup]);
       }
       &Apache::response::poprandomnumber();
       $bubble_lines = &bubble_line_count($answer_count, $bubbles_per_line);
       &Apache::lonxml::increment_counter($bubble_lines,
          "$part.$id");
       if ($target eq 'analyze') {
    &Apache::lonhomework::set_bubble_lines();
       }
       return $result;
 }  }
   
 sub getfoilcounts {  sub getfoilcounts {
   my @names;      my @names;
   my $truecnt=0;      my $truecnt=0;
   my $falsecnt=0;      my $falsecnt=0;
   my $name;      my $name;
   if ( $Apache::response::foilgroup{'names'} ) {      if ( $Apache::response::foilgroup{'names'} ) {
     @names= @{ $Apache::response::foilgroup{'names'} };   @names= @{ $Apache::response::foilgroup{'names'} };
   }      }
   foreach $name (@names) {      foreach $name (@names) {
     if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {   if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
       $truecnt++;      $truecnt++;
     } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {   } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
       $falsecnt++;      $falsecnt++;
    }
     }      }
   }      return ($truecnt,$falsecnt);
   return ($truecnt,$falsecnt);  }
   
   sub format_prior_answer {
       my ($mode,$answer,$other_data) = @_;
       my $foil_data = $other_data->[0];
       my %response = &Apache::lonnet::str2hash($answer);
       my ($name)   = keys(%response);
       return '<span class="LC_prior_radiobutton">'.
    $foil_data->{$name.'.text'}.'</span>';
   
 }  }
   
 sub displayallfoils {  sub displayallfoils {
   my $result;      my ($direction, $target)=@_;
   &Apache::lonxml::debug("survey style display");      my $result;
   my @names = @{ $Apache::response::foilgroup{'names'} };      &Apache::lonxml::debug("survey style display");
   my $temp=0;      my @names;
   my $id=$Apache::inputtags::response['-1'];      if ( $Apache::response::foilgroup{'names'} ) {
   my $part=$Apache::inputtags::part;   @names= @{ $Apache::response::foilgroup{'names'} };
   my $lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"};      }
   my %lastresponse=&Apache::lonnet::str2hash($lastresponse);  
   if (&Apache::response::show_answer() ) {      my $temp=0;
     foreach my $name (@names) {      my $i   =0;
       if ($Apache::response::foilgroup{$name.'.value'} ne 'unused') {      my $id=$Apache::inputtags::response['-1'];
  $result.="<br />".$Apache::response::foilgroup{$name.'.value'};      my $part=$Apache::inputtags::part;
  if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {      my $lastresponse;
   $result.='<b>';      my ($lastresponse,$newvariation,$showanswer);
       if ((($Apache::lonhomework::history{"resource.$part.type"} eq 'randomizetry') ||
           ($Apache::lonhomework::type eq 'randomizetry')) &&
           ($Apache::inputtags::status[-1] eq 'CAN_ANSWER')) {
           if ($env{'form.'.$part.'.rndseed'} ne
               $Apache::lonhomework::history{"resource.$part.rndseed"}) {
               $newvariation = 1;
           }
       }
       $showanswer = &Apache::response::show_answer();
       unless ((($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurvey') || ($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurveycred')) && (defined($env{'form.grade_symb'})) ||
              ($newvariation && !$showanswer)) {
           $lastresponse = 
       $Apache::lonhomework::history{"resource.$part.$id.submission"};
       }
       if ($direction eq 'horizontal') { $result.='<table><tr>'; }
       my %lastresponse=&Apache::lonnet::str2hash($lastresponse);
       if ($showanswer) {
    foreach my $name (@names) {
       if ($Apache::response::foilgroup{$name.'.value'} ne 'unused') {
    if (($direction eq 'horizontal') && ($target ne 'tex')) {
       $result.="<td>";
    } else {
       if ($target eq 'tex') {
    $result .= '\item \vskip -2mm ';
       } else {
    $result.="<br />";
       }
    }
    if (defined($lastresponse{$name})) {
       if ($target eq 'tex') {
    $result .= '}';
       } else {
    $result.='<b>';
       }
    }
    $result .= $Apache::response::foilgroup{$name.'.text'};
    if (defined($lastresponse{$name}) && ($target ne 'tex')) {
       $result.='</b>';
    }
    if (($direction eq 'horizontal') && ($target ne 'tex')) { $result.="</td>"; }
       }
  }   }
  $result .= $Apache::response::foilgroup{$name.'.text'};      } else {
  if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {   foreach my $name (@names) {
   $result.='</b>';      if ($Apache::response::foilgroup{$name.'.value'} ne 'unused') {
    if ($direction eq 'horizontal') {
       $result.="<td>";
    } else {
       if ($target eq 'tex') {
           if($env{'form.pdfFormFields'} eq 'yes' && $Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
                               my $fieldname = $env{'request.symb'}.'&part_'. $Apache::inputtags::part
                                               .'&radiobuttonresponse'.'&HWVAL_'.$Apache::inputtags::response['-1'];
                               $result .= '\item[{'.&Apache::lonxml::print_pdf_radiobutton($fieldname,$temp).'}]'
                                          .$Apache::response::foilgroup{$name.'.text'}."\n";
                           } else {
                               $result .= '\item \vskip -2mm ';
                           }
                       } else {
    $result.="<br />";
       }
    }
    if ($target eq 'tex') {
       if($env{'form.pdfFormFields'} ne 'yes' or $Apache::inputtags::status[-1] ne 'CAN_ANSWER') {
                           $result .= '$\bigcirc$'.$Apache::response::foilgroup{$name.'.text'}.'\\\\';  #' stupid emacs
                       }
       $i++;
    } else {
       $result .= '<label>';
       $result.="<input
                          onchange=\"javascript:setSubmittedPart('$part');\"
                          type=\"radio\"
                          name=\"HWVAL_$Apache::inputtags::response['-1']\"
                          value=\"$temp\"";
   
       if (defined($lastresponse{$name})) { $result .= ' checked="checked"'; }
       $result .= ' />'.$Apache::response::foilgroup{$name.'.text'}.
    '</label>';
    }
    $temp++;
    if ($target ne 'tex') {
       if (($direction eq 'horizontal') && ($target ne 'tex')) { $result.="</td>"; }
    } else {
       $result.='\vskip 0 mm ';
    }
       }
  }   }
       }  
     }  
   } else {  
     foreach my $name (@names) {  
       if ($Apache::response::foilgroup{$name.'.value'} ne 'unused') {  
  $result.="<br /><input type=\"radio\" name=\"HWVAL_$Apache::inputtags::response['-1']\" value=\"$temp\" ";  
  if (defined($lastresponse{$name})) { $result .= 'checked="on"'; }  
  $result .= '>'.$Apache::response::foilgroup{$name.'.text'}."</input>\n";  
  $temp++;  
       }  
     }      }
   }      
   return $result;      if (($direction eq 'horizontal') && ($target ne 'tex')) { $result.='</tr></table>'; }
       return $result;
 }  }
   
   
 sub whichfoils {  sub whichfoils {
   my ($max,$randomize)=@_;      my ($max,$randomize)=@_;
   
   my @truelist;      my @truelist;
   my @falselist;      my @falselist;
   my @whichfalse =();      my @whichfalse =();
   my ($truecnt,$falsecnt) = &getfoilcounts();      my ($truecnt,$falsecnt) = &getfoilcounts();
   my $count=0;      my $count=0;
   # we will add in 1 of the true statements      # we will add in 1 of the true statements
   if (($falsecnt+1)>$max) { $count=$max } else { $count=$falsecnt+1; }      if ( $max>0 && ($falsecnt+1)>$max) { $count=$max } else { $count=$falsecnt+1; $max=$count; }
   my $answer=int(&Math::Random::random_uniform() * ($count));      my $answer=int(&Math::Random::random_uniform() * ($count));
   &Apache::lonxml::debug("Count is $count, $answer is $answer");      &Apache::lonxml::debug("Count is $count, $answer is $answer");
   my @names;      my @names;
   if ( $Apache::response::foilgroup{'names'} ) {      if ( $Apache::response::foilgroup{'names'} ) {
       @names= @{ $Apache::response::foilgroup{'names'} };   @names= @{ $Apache::response::foilgroup{'names'} };
   }      }
   if (&Apache::response::showallfoils()) {      if (&Apache::response::showallfoils()) {
       @whichfalse=@names;   @whichfalse=@names;
   } elsif ($randomize eq 'no') {      } elsif ($randomize eq 'no') {
       &Apache::lonxml::debug("No randomization");   &Apache::lonxml::debug("No randomization");
       my $havetrue=0;   my $havetrue=0;
       foreach my $name (@names) {   foreach my $name (@names) {
   if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {      if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
       if (!$havetrue ) {   if (!$havetrue ) {
   push(@whichfalse,$name); $havetrue++; $answer=$#whichfalse;      push(@whichfalse,$name); $havetrue++; $answer=$#whichfalse;
       }   }
   } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {      } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
       push (@whichfalse,$name);   push (@whichfalse,$name);
   } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'unused') {      } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'unused') {
   } else {      } else {
       &Apache::lonxml::error(&HTML::Entities::encode("No valid value assigned ($Apache::response::foilgroup{$name.'.value'}) for foil $name in <foilgroup>"));   &Apache::lonxml::error(&HTML::Entities::encode("No valid value assigned ($Apache::response::foilgroup{$name.'.value'}) for foil $name in <foilgroup>",'<>&"'));
   }  
       }  
   } else {  
     my $current=0;  
     &Apache::lonhomework::showhash(%Apache::response::foilgroup);  
     my (%top,%bottom);  
     #first find out where everyone wants to be  
     foreach my $name (@names) {  
  $current++;  
  if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {  
     push (@truelist,$name);  
     if ($Apache::response::foilgroup{$name.'.location'} eq 'top') {  
  $top{$name}=$current;  
     } elsif ($Apache::response::foilgroup{$name.'.location'} eq 'bottom') {  
  $bottom{$name}=$current;  
     }      }
  } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {   }
     push (@falselist,$name);   if ((!$havetrue) && 
     if ($Apache::response::foilgroup{$name.'.location'} eq 'top') {              ($Apache::lonhomework::type ne 'survey') && 
  $top{$name}=$current;              ($Apache::lonhomework::type ne 'surveycred') &&
     } elsif ($Apache::response::foilgroup{$name.'.location'} eq 'bottom') {              ($Apache::lonhomework::type ne 'anonsurvey') &&
  $bottom{$name}=$current;              ($Apache::lonhomework::type ne 'anonsurveycred')) {
       &Apache::lonxml::error(&mt('There are no true statements available.').'<br />');
    }
       } else {
    my $current=0;
    &Apache::lonhomework::showhash(%Apache::response::foilgroup);
    my (%top,%bottom);
    #first find out where everyone wants to be
    foreach my $name (@names) {
       $current++;
       if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
    push (@truelist,$name);
    if ($Apache::response::foilgroup{$name.'.location'} eq 'top') {
       $top{$name}=$current;
    } elsif ($Apache::response::foilgroup{$name.'.location'} eq 'bottom') {
       $bottom{$name}=$current;
    }
       } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
    push (@falselist,$name);
    if ($Apache::response::foilgroup{$name.'.location'} eq 'top') {
       $top{$name}=$current;
    } elsif ($Apache::response::foilgroup{$name.'.location'} eq 'bottom') {
       $bottom{$name}=$current;
    }
       } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'unused') {
       } else {
    &Apache::lonxml::error(&HTML::Entities::encode("No valid value assigned ($Apache::response::foilgroup{$name.'.value'}) for foil $name in <foilgroup>",'<>&"'));
     }      }
  } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'unused') {  
  } else {  
     &Apache::lonxml::error(&HTML::Entities::encode("No valid value assigned ($Apache::response::foilgroup{$name.'.value'}) for foil $name in <foilgroup>"));  
  }   }
     }   #pick a true statement
     #pick a true statement   my $notrue=0;
     my $notrue=0;   if (scalar(@truelist) == 0) { $notrue=1; }
     if (scalar(@truelist) == 0) { $notrue=1; }   my $whichtrue = int(&Math::Random::random_uniform() * ($#truelist+1));
     my $whichtrue = int(&Math::Random::random_uniform() * ($#truelist+1));   &Apache::lonxml::debug("Max is $max, From $#truelist elms, picking $whichtrue");
     &Apache::lonxml::debug("Max is $max, From $#truelist elms, picking $whichtrue");   my (@toplist, @bottomlist);
     my (@toplist, @bottomlist);   my $topcount=0;
     my $topcount=0;   my $bottomcount=0;
     my $bottomcount=0;   # assign everyone to either toplist/bottomlist or whichfalse
     # assign everyone to either toplist/bottomlist or whichfalse   # which false is randomized, toplist bottomlist are in order
     # which false is randomized, toplist bottomlist are in order   while ((($#whichfalse+$topcount+$bottomcount) < $max-2) && ($#falselist > -1)) {
     while ((($#whichfalse+$topcount+$bottomcount) < $max-2) && ($#falselist > -1)) {      &Apache::lonxml::debug("Have $#whichfalse max is $max");
  &Apache::lonxml::debug("Have $#whichfalse max is $max");      my $afalse=int(&Math::Random::random_uniform() * ($#falselist+1));
  my $afalse=int(&Math::Random::random_uniform() * ($#falselist+1));      &Apache::lonxml::debug("From $#falselist elms, picking $afalse");
  &Apache::lonxml::debug("From $#falselist elms, picking $afalse");      $afalse=splice(@falselist,$afalse,1);
  $afalse=splice(@falselist,$afalse,1);      &Apache::lonxml::debug("Picked $afalse");
  &Apache::lonxml::debug("Picked $afalse");      &Apache::lonhomework::showhash(('names'=>\@names));
  &Apache::lonhomework::showhash(('names'=>\@names));      &Apache::lonhomework::showhash(%top);
  &Apache::lonhomework::showhash(%top);      if ($top{$afalse}) {
  if ($top{$afalse}) {   $toplist[$top{$afalse}]=$afalse;
     $toplist[$top{$afalse}]=$afalse;   $topcount++;
     $topcount++;      } elsif ($bottom{$afalse}) {
  } elsif ($bottom{$afalse}) {   $bottomlist[$bottom{$afalse}]=$afalse;
     $bottomlist[$bottom{$afalse}]=$afalse;   $bottomcount++;
     $bottomcount++;      } else {
    push (@whichfalse,$afalse);
       }
    }
    &Apache::lonxml::debug("Answer wants $answer");
    my $truename=$truelist[$whichtrue];
    my $dosplice=1;
    if (($notrue) && 
               ($Apache::lonhomework::type ne 'survey') &&
               ($Apache::lonhomework::type ne 'surveycred') &&
               ($Apache::lonhomework::type ne 'anonsurvey') &&
               ($Apache::lonhomework::type ne 'anonsurveycred')) {
       $dosplice=0;
       &Apache::lonxml::error(&mt('There are no true statements available.').'<br />');
    }
    #insert the true statement, keeping track of where it wants to be
    if ($Apache::response::foilgroup{$truename.'.location'} eq 'top' && $dosplice) {
       $toplist[$top{$truename}]=$truename;
       $answer=-1;
       foreach my $top (reverse(@toplist)) {
    if ($top) { $answer++;}
    if ($top eq $truename) { last; }
       }
       $dosplice=0;
    } elsif ($Apache::response::foilgroup{$truename.'.location'} eq 'bottom' && $dosplice) {
       $bottomlist[$bottom{$truename}]=$truename;
       $answer=-1;
       foreach my $bot (@bottomlist) {
    if ($bot) { $answer++;}
    if ($bot eq $truename) { last; }
       }
       $answer+=$topcount+$#whichfalse+1;
       $dosplice=0;
  } else {   } else {
     push (@whichfalse,$afalse);      if ($topcount>0 || $bottomcount>0) {
    $answer = int(&Math::Random::random_uniform() * ($#whichfalse+1))
       + $topcount;
       }
  }   }
     }   &Apache::lonxml::debug("Answer now wants $answer");
     &Apache::lonxml::debug("Answer wants $answer");   #add the top items to the top, bottom items to the bottom
     my $truename=$truelist[$whichtrue];   for (my $i=0;$i<=$#toplist;$i++) {
     my $dosplice=1;      if ($toplist[$i]) { unshift(@whichfalse,$toplist[$i]) }
     if ($notrue) {  
  $dosplice=0;  
  &Apache::lonxml::error("There are no true statements available.<br />");  
     }  
     #insert the true statement, keeping track of where it wants to be  
     if ($Apache::response::foilgroup{$truename.'.location'} eq 'top' && $dosplice) {  
  $toplist[$top{$truename}]=$truename;  
  $answer=-1;  
  foreach my $top (reverse(@toplist)) {  
     if ($top) { $answer++;}  
     if ($top eq $truename) { last; }  
  }  
  $dosplice=0;  
     } elsif ($Apache::response::foilgroup{$truename.'.location'} eq 'bottom' && $dosplice) {  
  $bottomlist[$bottom{$truename}]=$truename;  
  $answer=-1;  
  foreach my $bot (@bottomlist) {  
     if ($bot) { $answer++;}  
     if ($bot eq $truename) { last; }  
  }   }
  $answer+=$topcount+$#whichfalse+1;   for (my $i=0;$i<=$#bottomlist;$i++) {
  $dosplice=0;      if ($bottomlist[$i]) { push(@whichfalse,$bottomlist[$i]) }
     } else {   }
  if ($topcount>0 || $bottomcount>0) {   #if the true statement is randomized insert it into the list
     $answer = int(&Math::Random::random_uniform() * ($#whichfalse+1))   if ($dosplice) { splice(@whichfalse,$answer,0,$truelist[$whichtrue]); }
  + $topcount;      }
  }      &Apache::lonxml::debug("Answer is $answer");
     }      return ($answer,@whichfalse);
     &Apache::lonxml::debug("Answer now wants $answer");  
     #add the top items to the top, bottom items to the bottom  
     for (my $i=0;$i<=$#toplist;$i++) {  
  if ($toplist[$i]) { unshift(@whichfalse,$toplist[$i]) }  
     }  
     for (my $i=0;$i<=$#bottomlist;$i++) {  
  if ($bottomlist[$i]) { push(@whichfalse,$bottomlist[$i]) }  
     }  
     #if the true statement is randomized insert it into the list  
     if ($dosplice) { splice(@whichfalse,$answer,0,$truelist[$whichtrue]); }  
   }  
   &Apache::lonxml::debug("Answer is $answer");  
   return ($answer,@whichfalse);  
 }  }
   
 sub displayfoils {  sub displayfoils {
   my ($target,$max,$randomize)=@_;      my ($target,$answer,$whichfoils,$direction, $bubbles_per_line)=@_;
   my $result;      my $result;
   
   my ($answer,@whichfoils)=&whichfoils($max,$randomize);  
   my $part=$Apache::inputtags::part;  
   my $solved=$Apache::lonhomework::history{"resource.$part.solved"};  
   if ( ($target ne 'tex') &&  
        &Apache::response::show_answer() ) {  
     foreach my $name (@whichfoils) {  
       if ($target ne 'tex') {  
   $result.="<br />";  
       } else {  
   $result.='\item \vskip -2 mm  ';  
       }  
       if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {   
   if ($target ne 'tex') { $result.='Correct:<b>'; } else { $result.='Correct: \textbf{';}  
       } else {  
  $result.='Incorrect:';  
       }  
       if ($target ne 'tex') {  
   $result.=$Apache::response::foilgroup{$name.'.text'}."</input>\n";  
       } else {  
   $result.=$Apache::response::foilgroup{$name.'.text'};  
       }  
       if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {  
   if ($target ne 'tex') { $result.='</b>';} else {$result.='}';}  
       }  
     }  
   } else {  
     my @alphabet = ('A'..'Z');  
     my $i = 0;  
     my $temp=0;    
     my $id=$Apache::inputtags::response['-1'];  
     my $part=$Apache::inputtags::part;      my $part=$Apache::inputtags::part;
     my $lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"};      my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
     my %lastresponse=&Apache::lonnet::str2hash($lastresponse);      if ( ($target ne 'tex') &&
     foreach my $name (@whichfoils) {   &Apache::response::show_answer() ) {
       if ($target ne 'tex') {   if ($direction eq 'horizontal') {
   $result.="<br /><input type=\"radio\" name=\"HWVAL_$Apache::inputtags::response['-1']\" value=\"$temp\" ";      if ($target ne 'tex') {
   if (defined($lastresponse{$name})) { $result .= 'checked="on"'; }   $result.='<table><tr>';
   $result .= '>'.$Apache::response::foilgroup{$name.'.text'}."</input>\n";      }
       } else {   }
   if ($Apache::lonhomework::type eq 'exam') {   foreach my $name (@{ $whichfoils }) {
       $result .= '{\small \textbf{'.$alphabet[$i].'}}$\bigcirc$'.$Apache::response::foilgroup{$name.'.text'}.'\\\\';  #' stupid emacs      if ($direction eq 'horizontal') {
       $i++;   if ($target ne 'tex') { $result.='<td>'; }
   } else {      }
       $result .= '\vspace*{-2 mm}\item '.$Apache::response::foilgroup{$name.'.text'};      if ($target ne 'tex') {
   }   $result.="<br />";
       }      } else {
       $temp++;   $result.='\item \vskip -2 mm  ';
     }      }
   }      if ($Apache::response::foilgroup{$name.'.value'} eq 'true') { 
   if ($target ne 'tex') { $result.="<br />"; } else { $result.='\vskip 0 mm '; }   if ($target ne 'tex') {
   return $result;                      $result.=&mt('Correct:').'<b>';
                   } else {
                       $result.=&mt('Correct:').' \textbf{';
                   }
       } else {
    $result.=&mt('Incorrect:');
       }
       if ($target eq 'web') { $result.="<label>"; }
       $result.=$Apache::response::foilgroup{$name.'.text'};
       if ($target eq 'web') { $result.="</label>"; }
       if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
    if ($target ne 'tex') { $result.='</b>';} else {$result.='}';}
       }
       if ($direction eq 'horizontal') {
    if ($target ne 'tex') { $result.='</td>'; }
       }
    }
    if ($direction eq 'horizontal') {
       if ($target ne 'tex') {
    $result.='</tr></table>';
       }
    }
       } else {
    my @alphabet = ('A'..'Z');
    my $i = 0;
    my $bubble_number = 0;
    my $line = 0;
    my $temp=0;  
    my $id=$Apache::inputtags::response['-1'];
    my $part=$Apache::inputtags::part;
           my ($lastresponse,$newvariation);
           if ((($Apache::lonhomework::history{"resource.$part.type"} eq 'randomizetry') ||
                ($Apache::lonhomework::type eq 'randomizetry')) && 
           ($Apache::inputtags::status[-1] eq 'CAN_ANSWER')) {
               if ($env{'form.'.$part.'.rndseed'} ne
                   $Apache::lonhomework::history{"resource.$part.rndseed"}) {
                   $newvariation = 1;
               }
           }
           unless ($newvariation) {
       $lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"};
           }
    my %lastresponse=&Apache::lonnet::str2hash($lastresponse);
    if ($target ne 'tex' && $direction eq 'horizontal') {
       $result.="<table><tr>";
    }
    foreach my $name (@{ $whichfoils }) {
       if ($target ne 'tex') {
    if ($direction eq 'horizontal') {
       $result.="<td>"; 
    } else { 
       $result.="<br />";
    } 
       }
       if ($target ne 'tex') { 
                   $result.= '<label>';
    $result.=
       "<input type=\"radio\"
                               onchange=\"javascript:setSubmittedPart('$part');\"
                               name=\"HWVAL_$Apache::inputtags::response['-1']\"
                               value=\"$temp\"";
    if (defined($lastresponse{$name})) { $result .= ' checked="checked"'; }
    $result .= ' />'.$Apache::response::foilgroup{$name.'.text'}."</label>";
       } else {
    if ($Apache::lonhomework::type eq 'exam') {
       if($bubble_number >= $bubbles_per_line) {
    $line++;
    $i = 0;
    $bubble_number = 0;
    $result.='\item[\textbf{'.($Apache::lonxml::counter+$line).'}.]';
       }
       $result .= '{\small \textbf{'.$alphabet[$i].'}}$\bigcirc$'.$Apache::response::foilgroup{$name.'.text'}.'\\\\';  #' stupid emacs
       $i++;
       $bubble_number++;
    } else {
                       if($env{'form.pdfFormFields'} eq 'yes' && $Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
                           my $fieldname = $env{'request.symb'}.'&part_'. $Apache::inputtags::part
                                           .'&radiobuttonresponse'.'&HWVAL_'.$Apache::inputtags::response['-1'];
                           $result .= '\item[{'.&Apache::lonxml::print_pdf_radiobutton($fieldname,$temp).'}]'
                                      .$Apache::response::foilgroup{$name.'.text'}."\n";
                       } else { 
                           $result .= '\vspace*{-2 mm}\item '.$Apache::response::foilgroup{$name.'.text'};
                       }
                   }
       }
       if ($target ne 'tex' && $direction eq 'horizontal') {
    $result.="</td>"; 
       }
       $temp++;
    }
    if ($target ne 'tex' && $direction eq 'horizontal') {
       $result.="</tr></table>";
    }
       }
       if ($target ne 'tex') { if ($direction ne 'horizontal') { $result.="<br />";} } else { $result.='\vskip 0 mm '; }
       return $result;
   }
   
   sub displayallanswers {
       my @names;
       if ( $Apache::response::foilgroup{'names'} ) {
    @names= @{ $Apache::response::foilgroup{'names'} };
       }
       my $result=&Apache::response::answer_header('radiobuttonresponse');
       foreach my $name (@names) {
    $result.=&Apache::response::answer_part('radiobuttonresponse',
    $Apache::response::foilgroup{$name.'.value'});
       }
       $result.=&Apache::response::answer_footer('radiobuttonresponse');
       return $result;
 }  }
   
 sub displayanswers {  sub displayanswers {
   my ($max,$randomize)=@_;      my ($answer, $whichopt, $bubbles_per_line)=@_;
   my ($answer,@whichopt) = &whichfoils($max,$randomize);      my $result;
   my $result=&Apache::response::answer_header('radiobuttonresponse');  
   foreach my $name (@whichopt) {      if ($Apache::lonhomework::type eq 'exam') {
     $result.=&Apache::response::answer_part('radiobuttonresponse',   my $line = int($answer/$bubbles_per_line);
      $Apache::response::foilgroup{$name.'.value'})   my $correct = ('A'..'Z')[$answer%$bubbles_per_line];
   }   $result .= &Apache::response::answer_header('radiobuttonresponse',
   $result.=&Apache::response::answer_footer('radiobuttonresponse');      $line);
   return $result;   $result .= &Apache::response::answer_part('radiobuttonresponse',
     $correct);
       } else {
    $result .= &Apache::response::answer_header('radiobuttonresponse');
       }
       foreach my $name (@{ $whichopt }) {
    $result.=&Apache::response::answer_part('radiobuttonresponse',
    $Apache::response::foilgroup{$name.'.value'});
       }
       $result.=&Apache::response::answer_footer('radiobuttonresponse');
       return $result;
 }  }
   
 sub start_conceptgroup {  sub start_conceptgroup {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   $Apache::radiobuttonresponse::conceptgroup=1;      $Apache::radiobuttonresponse::conceptgroup=1;
   %Apache::response::conceptgroup=();      %Apache::response::conceptgroup=();
   my $result;      my $result;
   if ($target eq 'edit') {      if ($target eq 'edit') {
     $result.=&Apache::edit::tag_start($target,$token);   $result.=&Apache::edit::tag_start($target,$token);
     $result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').   $result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').
  &Apache::edit::end_row().&Apache::edit::start_spanning_row();      &Apache::edit::end_row().&Apache::edit::start_spanning_row();
   } elsif ($target eq 'modified') {      } elsif ($target eq 'modified') {
     my $constructtag=&Apache::edit::get_new_args($token,$parstack,   my $constructtag=&Apache::edit::get_new_args($token,$parstack,
  $safeeval,'concept');       $safeeval,'concept');
     if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }   if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
   }      }
   return $result;      return $result;
 }  }
   
 sub end_conceptgroup {  sub end_conceptgroup {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   $Apache::radiobuttonresponse::conceptgroup=0;      $Apache::radiobuttonresponse::conceptgroup=0;
   my $result;      my $result;
   if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'  ||      if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'  ||
       $target eq 'tex' || $target eq 'analyze') {   $target eq 'tex' || $target eq 'analyze') {
       &Apache::response::pick_foil_for_concept($target,   &Apache::response::pick_foil_for_concept($target,
        ['value','text','location'],   ['value','text','location'],
        \%Apache::hint::radiobutton,   \%Apache::hint::radiobutton,
        $parstack,$safeeval);   $parstack,$safeeval);
   } elsif ($target eq 'edit') {      } elsif ($target eq 'edit') {
     $result=&Apache::edit::end_table();   $result=&Apache::edit::end_table();
   }      }
   return $result;      return $result;
 }  }
   
 sub insert_conceptgroup {  sub insert_conceptgroup {
   my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";      my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
   return $result;      return $result;
 }  }
   
 sub start_foil {  sub start_foil {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   my $result='';      my $result='';
   if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {      if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
     &Apache::lonxml::startredirection;   &Apache::lonxml::startredirection;
   } elsif ($target eq 'edit') {   if ($target eq 'analyze') {
     $result=&Apache::edit::tag_start($target,$token);      &Apache::response::check_if_computed($token,$parstack,$safeeval,'value');
     $result.=&Apache::edit::text_arg('Name:','name',$token);   }
     $result.=&Apache::edit::select_or_text_arg('Correct Option:','value',      } elsif ($target eq 'edit') {
        ['unused','true','false'],$token);   $result=&Apache::edit::tag_start($target,$token);
     my $randomize=&Apache::lonxml::get_param('randomize',$parstack,   $result.=&Apache::edit::text_arg('Name:','name',$token);
      $safeeval,'-3');   $result.=&Apache::edit::select_or_text_arg('Correct Option:','value',
     if ($randomize ne 'no') {     ['unused','true','false'],
       $result.=&Apache::edit::select_arg('Location:','location',     $token);
  ['random','top','bottom'],$token);   my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
     }   $safeeval,'-3');
     $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();   if ($randomize ne 'no') {
   } elsif ($target eq 'modified') {      $result.=&Apache::edit::select_arg('Location:','location',
      my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,         ['random','top','bottom'],$token);
   'value','name','location');   }
     if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }   $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
   }       } elsif ($target eq 'modified') {
   return $result;   my $constructtag=&Apache::edit::get_new_args($token,$parstack,
        $safeeval,'value','name',
        'location');
    if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
       } 
       return $result;
 }  }
   
 sub end_foil {  sub end_foil {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   my $text='';      my $text='';
   if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {      if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
       $text=&Apache::lonxml::endredirection;   $text=&Apache::lonxml::endredirection;
   }      }
   if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'  || $target eq 'tex' || $target eq 'analyze') {      if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'
     my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);   || $target eq 'tex' || $target eq 'analyze') {
     if ($value ne 'unused') {   my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
       my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);   if ($value ne 'unused') {
       my $location =&Apache::lonxml::get_param('location',$parstack,$safeeval);      my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
       if (!$name) { $name=$Apache::lonxml::curdepth; }      if ($name eq "") {
       if ( $Apache::radiobuttonresponse::conceptgroup   &Apache::lonxml::warning(&mt('Foils without names exist. This can cause problems to malfunction.'));
    && !&Apache::response::showallfoils() ) {   $name=$Apache::lonxml::curdepth;
  push @{ $Apache::response::conceptgroup{'names'} }, $name;      }
  $Apache::response::conceptgroup{"$name.value"} = $value;      if (defined($Apache::response::foilnames{$name})) {
  $Apache::response::conceptgroup{"$name.text"} = $text;   &Apache::lonxml::error(&mt('Foil name [_1] appears more than once. Foil names need to be unique.','<b><tt>'.$name.'</tt></b>'));
  $Apache::response::conceptgroup{"$name.location"} = $location;      }
       } else {      $Apache::response::foilnames{$name}++;
  push @{ $Apache::response::foilgroup{'names'} }, $name;      my $location =&Apache::lonxml::get_param('location',$parstack,
  $Apache::response::foilgroup{"$name.value"} = $value;       $safeeval);
  $Apache::response::foilgroup{"$name.text"} = $text;      if ( $Apache::radiobuttonresponse::conceptgroup
  $Apache::response::foilgroup{"$name.location"} = $location;   && !&Apache::response::showallfoils() ) {
       }   push @{ $Apache::response::conceptgroup{'names'} }, $name;
    $Apache::response::conceptgroup{"$name.value"} = $value;
    $Apache::response::conceptgroup{"$name.text"} = $text;
    $Apache::response::conceptgroup{"$name.location"} = $location;
       } else {
    push @{ $Apache::response::foilgroup{'names'} }, $name;
    $Apache::response::foilgroup{"$name.value"} = $value;
    $Apache::response::foilgroup{"$name.text"} = $text;
    $Apache::response::foilgroup{"$name.location"} = $location;
       }
    }
     }      }
   }      return '';
   return '';  
 }  }
   
 sub insert_foil {  sub insert_foil {
   return '      return '
 <foil name="" value="unused">  <foil name="" value="unused">
 <startouttext />  <startouttext />
 <endouttext />  <endouttext />
Line 544  sub insert_foil { Line 848  sub insert_foil {
 }  }
 1;  1;
 __END__  __END__
   
   
   
   =head1 NAME
   
   Apache::radiobuttonresponse
   
   =head1 SYNOPSIS
   
   Handles multiple-choice style responses.
   
   This is part of the LearningOnline Network with CAPA project
   described at http://www.lon-capa.org.
   
   =head1 SUBROUTINES
   
   =over
   
   =item start_radiobuttonresponse()
   
   =item bubble_line_count()
   
   =item end_radiobuttonresponse()
   
   =item start_foilgroup()
   
   =item storesurvey()
   
   =item grade_response()
   
   =item end_foilgroup()
   
   =item getfoilcounts()
   
   =item format_prior_answer()
   
   =item displayallfoils()
   
   =item &whichfoils($max,$randomize)
   
   Randomizes the list of foils.
   Respects
     - each foils desire to be randomized
     - the existance of Concept groups of foils (select 1 foil from each)
     - and selects a single correct statement from all possilble true statments
     - and limits it to a toal of $max foils
   
   WARNING: this routine uses the random number generator, it should only
   be called once per target, otherwise it can cause randomness changes in
   homework problems.
   
   Arguments
     $max - maximum number of foils to select (including the true one)
            (so a max of 5 is: 1 true, 4 false)
   
     $randomize - whether to randomize the listing of foils, by default
                  will randomize, only if randomize is 'no' will it not
   
   Returns
     $answer - location in the array of the correct answer
     @foils  - array of foil names in to display order
   
   =item displayfoils()
   
   =item displayallanswers()
   
   =item displayanswers()
   
   =item start_conceptgroup()
   
   =item end_conceptgroup()
   
   =item insert_conceptgroup()
   
   =item start_foil()
   
   =item end_foil()
   
   =item insert_foil()
   
   =back
   
   =cut
     
Removed from v.1.79  
changed lines
  Added in v.1.147

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