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version 1.4, 2001/01/11 22:17:30 version 1.146, 2010/06/14 02:08:28
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 # The LearningOnline Network with CAPA  # The LearningOnline Network with CAPA
 # mutliple choice style responses  # mutliple choice style responses
   #
   # $Id$
   #
   # Copyright Michigan State University Board of Trustees
   #
   # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
   #
   # LON-CAPA is free software; you can redistribute it and/or modify
   # it under the terms of the GNU General Public License as published by
   # the Free Software Foundation; either version 2 of the License, or
   # (at your option) any later version.
   #
   # LON-CAPA is distributed in the hope that it will be useful,
   # but WITHOUT ANY WARRANTY; without even the implied warranty of
   # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   # GNU General Public License for more details.
   #
   # You should have received a copy of the GNU General Public License
   # along with LON-CAPA; if not, write to the Free Software# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   #
   # /home/httpd/html/adm/gpl.txt
   #
   # http://www.lon-capa.org/
   #
   
   
 # 11/23,11/24,11/28 Gerd Kortemeyer  
   
 package Apache::radiobuttonresponse;  package Apache::radiobuttonresponse;
 use strict;  use strict;
   use HTML::Entities();
   use Apache::lonlocal;
   use Apache::lonnet;
   use Apache::response;
   
   my $default_bubbles_per_line = 10;
   
   
   BEGIN {
       &Apache::lonxml::register('Apache::radiobuttonresponse',('radiobuttonresponse'));
   }
   
 sub BEGIN {  sub bubble_line_count {
   &Apache::lonxml::register('Apache::radiobuttonresponse',('radiobuttonresponse'));      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,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   #when in a radiobutton response use these      my $result;
   &Apache::lonxml::register('Apache::radiobuttonresponse',('foilgroup','foil'));  
   my $id = &Apache::response::start_response($parstack,$safeeval);      #when in a radiobutton response use these
   return '';      &Apache::lonxml::register('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup'));
       push (@Apache::lonxml::namespace,'radiobuttonresponse');
       my $id = &Apache::response::start_response($parstack,$safeeval);
   
       %Apache::hint::radiobutton=();
       undef(%Apache::response::foilnames);
       if ($target eq 'meta') {
    $result=&Apache::response::meta_package_write('radiobuttonresponse');
       } elsif ($target eq 'edit' ) {
    $result.=&Apache::edit::start_table($token)
              .'<tr><td>'.&Apache::lonxml::description($token)
              .&Apache::loncommon::help_open_topic('Radio_Response_Problems')
              .'</td>'
              .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
              .&Apache::edit::deletelist($target,$token)
              .'</span></td>'
              .'<td>&nbsp;'.&Apache::edit::end_row()
              .&Apache::edit::start_spanning_row();
    $result.=
       &Apache::edit::text_arg('Max Number Of Shown Foils:','max',
       $token,'4').'&nbsp;'x 3 .
       &Apache::edit::select_arg('Randomize Foil Order:','randomize',
         ['yes','no'],$token).'&nbsp;'x 3 .
       &Apache::edit::select_arg('Display Direction:','direction',
         ['vertical','horizontal'],$token).
         &Apache::edit::end_row().
         &Apache::edit::start_spanning_row()."\n";
       } elsif ($target eq 'modified') {
    my $constructtag=&Apache::edit::get_new_args($token,$parstack,
        $safeeval,'max',
        'randomize','direction');
    if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
       } elsif ($target eq 'tex') {
    my $type=&Apache::lonxml::get_param('TeXtype',$parstack,$safeeval,
       undef,0);
    if ($type eq '1') {
       $result .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}';
    } elsif ($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 {
   &Apache::response::end_response;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   return '';      my $result;
       if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
       if ($target eq 'tex' ) {
           if($env{'form.pdfFormFields'} eq 'yes' and $Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
               $result .= '\end{itemize}';
           } else {
               $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 {
   %Apache::response::foilgroup={};      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       my $result;
       %Apache::response::foilgroup=();
       $Apache::radiobuttonresponse::conceptgroup=0;
       &Apache::response::pushrandomnumber();
       if ($target eq 'tex' && $Apache::lonhomework::type eq 'exam') {
    $result.='\item[\textbf{'.$Apache::lonxml::counter.'}.]';
       }
       return $result;
   }
   
   sub storesurvey {
       my ($style) = @_;
       if ( !&Apache::response::submitted() ) { return ''; }
       my $response = $env{'form.HWVAL_'.$Apache::inputtags::response['-1']};
       &Apache::lonxml::debug("Here I am!:$response:");
       if ( $response !~ /[0-9]+/) { return ''; }
       my $part = $Apache::inputtags::part;
       my $id = $Apache::inputtags::response['-1'];
       my @whichfoils=@{ $Apache::response::foilgroup{'names'} };
       my %responsehash;
       $responsehash{$whichfoils[$response]}=$response;
       my $responsestr=&Apache::lonnet::hash2str(%responsehash);
       $Apache::lonhomework::results{"resource.$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 {
       my ($answer, $whichfoils, $bubbles_per_line)=@_;
   
       if ( !&Apache::response::submitted() ) { return; }
       my $response;
       
       if ($env{'form.submitted'} eq 'scantron') {
    $response = &Apache::response::getresponse(1,undef,
      &bubble_line_count(scalar(@{ $whichfoils}),
         $bubbles_per_line),
      $bubbles_per_line);
   
       } else {
    $response = $env{'form.HWVAL_'.$Apache::inputtags::response['-1']};
       }
   
   
       if ( $response !~ /[0-9]+/) { return; }
       my $part=$Apache::inputtags::part;
       my $id = $Apache::inputtags::response['-1'];
       my %responsehash;
       $responsehash{$whichfoils->[$response]}=$response;
       my $responsestr=&Apache::lonnet::hash2str(%responsehash);
       my %previous=&Apache::response::check_for_previous($responsestr,
          $part,$id);
       $Apache::lonhomework::results{"resource.$part.$id.submission"}=
    $responsestr;
       &Apache::lonxml::debug("submitted a $response<br />\n");
       my $ad;
       if ($response == $answer) {
    $ad='EXACT_ANS';
       } else {
    $ad='INCORRECT';
       }
       $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
       &Apache::response::handle_previous(\%previous,$ad);
 }  }
   
 #FIXME needs to stablely do random picks  
 sub end_foilgroup {  sub end_foilgroup {
   my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   my $name;  
   my $result;      my $result;
   my @names = @{ $Apache::response::foilgroup{'names'} };      my $bubble_lines;
   my @truelist;      my $bubbles_per_line;
   my @falselist;      my $answer_count;
   my $rndseed=&Apache::lonnet::rndseed();      my $id   = $Apache::inputtags::response['-1'];
   $rndseed=$rndseed      my $part = $Apache::inputtags::part;
     +&Apache::lonnet::numval($Apache::inputtags::part)      $bubbles_per_line = 
       +&Apache::lonnet::numval($Apache::inputtags::response['-1']);   &Apache::response::get_response_param($Apache::inputtags::part."_$id",
   srand($rndseed*10);        'numbubbles',
   foreach $name (@names) {        $default_bubbles_per_line);
     $result.="<br><b>$name</b> is <i> $Apache::response::foilgroup{$name.'.value'} </i>";  
     if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {  
       push (@truelist,$name);      if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
     } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {   $target eq 'tex' || $target eq 'analyze') {
       push (@falselist,$name);   my $style = $Apache::lonhomework::type;
     } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'unused') {   my $direction = &Apache::lonxml::get_param('direction',$parstack,
     } else {     $safeeval,'-2');
       &Apache::lonxml::error("Unknow state $Apache::response::foilgroup{$name.'.value'} for $name in <foilgroup>");   if ( (($style eq 'survey') || ($style eq 'surveycred') || 
     }                ($style eq 'anonsurvey') || ($style eq 'anonsurveycred')) 
   }               && ($target ne 'analyze')) {
   my $rrargs ='';      if ($target eq 'web' || $target eq 'tex') {
   if ( $#$parstack > 0 ) { $rrargs=$$parstack['-2']; }   $result=&displayallfoils($direction, $target);
   my $max = &Apache::run::run("{$rrargs;".'return $max}',$safeeval);      } elsif ( $target eq 'answer' ) {
   my $whichtrue = rand $#truelist;   $result=&displayallanswers();
   &Apache::lonxml::debug("Max is $max, From $#truelist elms, picking $whichtrue");      } elsif ( $target eq 'grade' ) {
   my @whichfalse =();   $result=&storesurvey($style);
   my $temp=0;      }
   while ((($#whichfalse+2) < $max) && ($#falselist > -1)) {      $answer_count = scalar(@{$Apache::response::foilgroup{'names'}});
     my $afalse=rand $#falselist;  
     &Apache::lonxml::debug("From $#falselist elms, picking $afalse");   } else {
     $afalse=splice(@falselist,$afalse,1);  
     &Apache::lonxml::debug("Picked $afalse");      my $name;
     push (@whichfalse,$afalse);      my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,
   }   '-2');
   my $where = rand $max;      my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
   splice(@whichfalse,$where,0,$truelist[$whichtrue]);         $safeeval,'-2');
   my $temp;      my ($answer, @shown) = &whichfoils($max, $randomize);
   foreach $temp (@whichfalse) {      $answer_count = scalar(@shown);
     $result.='<input type="radio" name="bob">'.$Apache::response::foilgroup{$temp.'.text'}."</input><br />\n";  
   }      if ($target eq 'web' || $target eq 'tex') {
   return $result;   $result=&displayfoils($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 {
       my @names;
       my $truecnt=0;
       my $falsecnt=0;
       my $name;
       if ( $Apache::response::foilgroup{'names'} ) {
    @names= @{ $Apache::response::foilgroup{'names'} };
       }
       foreach $name (@names) {
    if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
       $truecnt++;
    } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
       $falsecnt++;
    }
       }
       return ($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 {
       my ($direction, $target)=@_;
       my $result;
       &Apache::lonxml::debug("survey style display");
       my @names;
       if ( $Apache::response::foilgroup{'names'} ) {
    @names= @{ $Apache::response::foilgroup{'names'} };
       }
   
       my $temp=0;
       my $i   =0;
       my $id=$Apache::inputtags::response['-1'];
       my $part=$Apache::inputtags::part;
       my $lastresponse;
       unless ((($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurvey') || ($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurveycred')) && (defined($env{'form.grade_symb'}))) {
           $lastresponse = 
       $Apache::lonhomework::history{"resource.$part.$id.submission"};
       }
       if ($direction eq 'horizontal') { $result.='<table><tr>'; }
       my %lastresponse=&Apache::lonnet::str2hash($lastresponse);
       if (&Apache::response::show_answer() ) {
    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>"; }
       }
    }
       } else {
    foreach my $name (@names) {
       if ($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 ';
    }
       }
    }
       }
       
       if (($direction eq 'horizontal') && ($target ne 'tex')) { $result.='</tr></table>'; }
       return $result;
   }
   
   
   sub whichfoils {
       my ($max,$randomize)=@_;
   
       my @truelist;
       my @falselist;
       my @whichfalse =();
       my ($truecnt,$falsecnt) = &getfoilcounts();
       my $count=0;
       # we will add in 1 of the true statements
       if ( $max>0 && ($falsecnt+1)>$max) { $count=$max } else { $count=$falsecnt+1; $max=$count; }
       my $answer=int(&Math::Random::random_uniform() * ($count));
       &Apache::lonxml::debug("Count is $count, $answer is $answer");
       my @names;
       if ( $Apache::response::foilgroup{'names'} ) {
    @names= @{ $Apache::response::foilgroup{'names'} };
       }
       if (&Apache::response::showallfoils()) {
    @whichfalse=@names;
       } elsif ($randomize eq 'no') {
    &Apache::lonxml::debug("No randomization");
    my $havetrue=0;
    foreach my $name (@names) {
       if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
    if (!$havetrue ) {
       push(@whichfalse,$name); $havetrue++; $answer=$#whichfalse;
    }
       } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
    push (@whichfalse,$name);
       } elsif ($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 $name in <foilgroup>",'<>&"'));
       }
    }
    if ((!$havetrue) && 
               ($Apache::lonhomework::type ne 'survey') && 
               ($Apache::lonhomework::type ne 'surveycred') &&
               ($Apache::lonhomework::type ne 'anonsurvey') &&
               ($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>",'<>&"'));
       }
    }
    #pick a true statement
    my $notrue=0;
    if (scalar(@truelist) == 0) { $notrue=1; }
    my $whichtrue = int(&Math::Random::random_uniform() * ($#truelist+1));
    &Apache::lonxml::debug("Max is $max, From $#truelist elms, picking $whichtrue");
    my (@toplist, @bottomlist);
    my $topcount=0;
    my $bottomcount=0;
    # assign everyone to either toplist/bottomlist or whichfalse
    # which false is randomized, toplist bottomlist are in order
    while ((($#whichfalse+$topcount+$bottomcount) < $max-2) && ($#falselist > -1)) {
       &Apache::lonxml::debug("Have $#whichfalse max is $max");
       my $afalse=int(&Math::Random::random_uniform() * ($#falselist+1));
       &Apache::lonxml::debug("From $#falselist elms, picking $afalse");
       $afalse=splice(@falselist,$afalse,1);
       &Apache::lonxml::debug("Picked $afalse");
       &Apache::lonhomework::showhash(('names'=>\@names));
       &Apache::lonhomework::showhash(%top);
       if ($top{$afalse}) {
    $toplist[$top{$afalse}]=$afalse;
    $topcount++;
       } elsif ($bottom{$afalse}) {
    $bottomlist[$bottom{$afalse}]=$afalse;
    $bottomcount++;
       } else {
    push (@whichfalse,$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;
       $dosplice=0;
    } else {
       if ($topcount>0 || $bottomcount>0) {
    $answer = int(&Math::Random::random_uniform() * ($#whichfalse+1))
       + $topcount;
       }
    }
    &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 {
       my ($target,$answer,$whichfoils,$direction, $bubbles_per_line)=@_;
       my $result;
   
       my $part=$Apache::inputtags::part;
       my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
       if ( ($target ne 'tex') &&
    &Apache::response::show_answer() ) {
    if ($direction eq 'horizontal') {
       if ($target ne 'tex') {
    $result.='<table><tr>';
       }
    }
    foreach my $name (@{ $whichfoils }) {
       if ($direction eq 'horizontal') {
    if ($target ne 'tex') { $result.='<td>'; }
       }
       if ($target ne 'tex') {
    $result.="<br />";
       } else {
    $result.='\item \vskip -2 mm  ';
       }
       if ($Apache::response::foilgroup{$name.'.value'} eq 'true') { 
    if ($target ne 'tex') {
                       $result.=&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 $lastresponse=$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 {
       my ($answer, $whichopt, $bubbles_per_line)=@_;
       my $result;
   
       if ($Apache::lonhomework::type eq 'exam') {
    my $line = int($answer/$bubbles_per_line);
    my $correct = ('A'..'Z')[$answer%$bubbles_per_line];
    $result .= &Apache::response::answer_header('radiobuttonresponse',
       $line);
    $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 {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       $Apache::radiobuttonresponse::conceptgroup=1;
       %Apache::response::conceptgroup=();
       my $result;
       if ($target eq 'edit') {
    $result.=&Apache::edit::tag_start($target,$token);
    $result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').
       &Apache::edit::end_row().&Apache::edit::start_spanning_row();
       } elsif ($target eq 'modified') {
    my $constructtag=&Apache::edit::get_new_args($token,$parstack,
        $safeeval,'concept');
    if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
       }
       return $result;
   }
   
   sub end_conceptgroup {
       my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
       $Apache::radiobuttonresponse::conceptgroup=0;
       my $result;
       if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'  ||
    $target eq 'tex' || $target eq 'analyze') {
    &Apache::response::pick_foil_for_concept($target,
    ['value','text','location'],
    \%Apache::hint::radiobutton,
    $parstack,$safeeval);
       } elsif ($target eq 'edit') {
    $result=&Apache::edit::end_table();
       }
       return $result;
   }
   
   sub insert_conceptgroup {
       my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
       return $result;
 }  }
   
 sub start_foil {  sub start_foil {
   &Apache::lonxml::debug("redirection be  $Apache::lonxml::redirection");      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   $Apache::lonxml::redirection--;      my $result='';
       if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
    &Apache::lonxml::startredirection;
    if ($target eq 'analyze') {
       &Apache::response::check_if_computed($token,$parstack,$safeeval,'value');
    }
       } elsif ($target eq 'edit') {
    $result=&Apache::edit::tag_start($target,$token);
    $result.=&Apache::edit::text_arg('Name:','name',$token);
    $result.=&Apache::edit::select_or_text_arg('Correct Option:','value',
      ['unused','true','false'],
      $token);
    my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
    $safeeval,'-3');
    if ($randomize ne 'no') {
       $result.=&Apache::edit::select_arg('Location:','location',
          ['random','top','bottom'],$token);
    }
    $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
       } elsif ($target eq 'modified') {
    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,$parstack,$parser,$safeeval,$style)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   if ($target eq 'web' || $target eq 'grade') {      my $text='';
     my $args ='';      if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
     if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }   $text=&Apache::lonxml::endredirection;
     my $name = &Apache::run::run("{$args;".'return $name}',$safeeval);      }
     push @{ $Apache::response::foilgroup{'names'} }, $name;      if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'
     my $value = &Apache::run::run("{$args;".'return $value}',$safeeval);   || $target eq 'tex' || $target eq 'analyze') {
     $Apache::response::foilgroup{"$name.value"} = $value;   my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
     $Apache::response::foilgroup{"$name.text"} = $Apache::lonxml::outputstack;   if ($value ne 'unused') {
   }      my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
         if ($name eq "") {
   $Apache::lonxml::redirection++;   &Apache::lonxml::warning(&mt('Foils without names exist. This can cause problems to malfunction.'));
   &Apache::lonxml::debug("redirection is  $Apache::lonxml::redirection");   $name=$Apache::lonxml::curdepth;
   if ($Apache::lonxml::redirection == 1) {       }
     &Apache::lonxml::debug("reset $Apache::lonxml::outputstack");      if (defined($Apache::response::foilnames{$name})) {
     $Apache::lonxml::outputstack='';    &Apache::lonxml::error(&mt('Foil name [_1] appears more than once. Foil names need to be unique.','<b><tt>'.$name.'</tt></b>'));
   }      }
   return '';      $Apache::response::foilnames{$name}++;
       my $location =&Apache::lonxml::get_param('location',$parstack,
        $safeeval);
       if ( $Apache::radiobuttonresponse::conceptgroup
    && !&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 '';
 }  }
   
   sub insert_foil {
       return '
   <foil name="" value="unused">
   <startouttext />
   <endouttext />
   </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.1.4  
changed lines
  Added in v.1.146

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