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version 1.2, 2001/01/08 21:52:04 version 1.61, 2002/11/14 20:30:34
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 # The LearningOnline Network with CAPA  # The LearningOnline Network with CAPA
 # mutliple choice style responses  # mutliple choice style responses
   #
 # 11/23,11/24,11/28 Gerd Kortemeyer  # $Id$
   #
   # 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/
   #
   # 2/21 Guy
   
 package Apache::radiobuttonresponse;  package Apache::radiobuttonresponse;
 use strict;  use strict;
   use HTML::Entities();
   
 sub BEGIN {  BEGIN {
   &Apache::lonxml::register('Apache::radiobuttonresponse',('radiobuttonresponse','foilgroup','foil'));    &Apache::lonxml::register('Apache::radiobuttonresponse',('radiobuttonresponse'));
 }  }
   
 sub start_radiobuttonresponse {  sub start_radiobuttonresponse {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;
     #when in a radiobutton response use these
     &Apache::lonxml::register('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup'));
     push (@Apache::lonxml::namespace,'radiobuttonresponse');
     my $id = &Apache::response::start_response($parstack,$safeeval);
     %Apache::hint::radiobutton=();
     if ($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($token)."</td><td>Delete:".
    &Apache::edit::deletelist($target,$token)
    ."</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').
    &Apache::edit::select_arg('Randomize Foil Order','randomize',
     ['yes','no'],$token).
           &Apache::edit::end_row().&Apache::edit::start_spanning_row()."\n";
     } elsif ($target eq 'modified') {
       my $constructtag=&Apache::edit::get_new_args($token,$parstack,
    $safeeval,'max','randomize');
       if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
     } elsif ($target eq 'tex') {
         $result .= '\begin{enumerate}';
     }
     return $result;
 }  }
   
 sub end_radiobuttonresponse {  sub end_radiobuttonresponse {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;
     if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
     if ($target eq 'tex') { $result .= '\end{enumerate}'; }
     &Apache::response::end_response;
     pop @Apache::lonxml::namespace;
     &Apache::lonxml::deregister('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup'));
     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=();
     $Apache::radiobuttonresponse::conceptgroup=0;
     &Apache::response::setrandomnumber();
     if ($target eq 'tex' && $Apache::lonhomework::type eq 'exam') {
         $result.='\item[\textbf{'.$Apache::lonxml::counter.'}.]';
         &Apache::lonxml::increment_counter();
     }
     return $result;
   }
   
   sub storesurvey {
     if ( !defined($ENV{'form.submitted'})) { return ''; }
     my $response = $ENV{'form.HWVAL'.$Apache::inputtags::response['-1']};
     &Apache::lonxml::debug("Here I am!:$response:");
     if ( $response !~ /[0-9]+/) { return ''; }
     my $id = $Apache::inputtags::response['-1'];
     my @whichfoils=@{ $Apache::response::foilgroup{'names'} };
     my %responsehash;
     $responsehash{$whichfoils[$response]}=$response;
     $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.submission"}=&Apache::lonnet::hash2str(%responsehash);
     $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}='SUBMITTED';
     &Apache::lonxml::debug("submitted a $response<br />\n");
     return '';
   }
   
   sub grade_response {
     my ($max,$randomize)=@_;
     #keep the random numbers the same must always call this
     my ($answer,@whichfoils)=&whichfoils($max,$randomize);
     if (!defined($ENV{'form.submitted'})) { return; }
     my $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);
 }  }
   
 sub end_foilgroup {  sub end_foilgroup {
   my ($target,$token,$parstack,$parser,$safeeval,$style)=@_;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   
     my $result;
     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || $target eq 'tex') {
       my $style = $Apache::lonhomework::type;
       if ( $style eq 'survey' ) {
         if ($target eq 'web' || $target eq 'answer' || $target eq 'tex') {
    $result=&displayallfoils();
         } elsif ( $target eq 'grade' ) {
    $result=&storesurvey();
         }
       } else {
         my $name;
         my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
         my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
    $safeeval,'-2');
         if ($target eq 'web' || $target eq 'tex') {
    $result=&displayfoils($target,$max,$randomize);
         } elsif ($target eq 'answer' ) {
    $result=&displayanswers($max,$randomize);
         } elsif ( $target eq 'grade') {
    &grade_response($max,$randomize);
         }
       }
     }
     return $result;
   }
   
   sub getfoilcounts {
     my @names;
     my $truecnt=0;
     my $falsecnt=0;
   my $name;    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 displayallfoils {
   my $result;    my $result;
   foreach $name ($Apache::response::foilgroup{'names'}) {    &Apache::lonxml::debug("survey style display");
     $result.="<br><b>$name</b> is <i> $Apache::response::foilgroup{$name.'.value'} </i>";    my @names = @{ $Apache::response::foilgroup{'names'} };
     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($lastresponse);
     if (($Apache::lonhomework::history{"resource.$part.solved"} =~ /^correct/)  || ($Apache::inputtags::status[-1] eq  'SHOW_ANSWER')) {
       foreach my $name (@names) {
         if ($Apache::response::foilgroup{$name.'.value'} ne 'unused') {
    $result.="<br />".$Apache::response::foilgroup{$name.'.value'};
    if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
     $result.='<b>';
    }
    $result .= $Apache::response::foilgroup{$name.'.text'};
    if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
     $result.='</b>';
    }
         }
       }
     } 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;    return $result;
 }  }
   
   sub whichfoils {
     my ($max,$randomize)=@_;
   
     my @truelist;
     my @falselist;
     my @whichfalse =();
     my ($truecnt,$falsecnt) = &getfoilcounts();
     my $count=0;
     # we will add in 1 of the true statements
     if (($falsecnt+1)>$max) { $count=$max } else { $count=$falsecnt+1; }
     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>"));
     }
         }
     } 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 $whichtrue = int(&Math::Random::random_uniform() * ($#truelist+1));
       &Apache::lonxml::debug("Max is $max, From $#truelist elms, picking $whichtrue");
       my $numinserted;
       my (@toplist, @bottomlist);
       my $topcount=0;
       # assign everyone to either toplist/bottomlist or whichfalse
       # which false is randomized, toplist bottomlist are in order
       while ((($numinserted) < $max-1) && ($#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;
    } else {
       push (@whichfalse,$afalse);
    }
       }
       my $truename=$truelist[$whichtrue];
       my $dosplice=1;
       #insert the true statement, keeping track of where it wants to be
       if ($Apache::response::foilgroup{$truename.'.location'} eq 'top' ) {
    $toplist[$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') {
    $bottomlist[$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) { 
     $answer = int(&Math::Random::random_uniform() * ($#whichfalse+1))
       + $topcount;
    }
       }
       #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 ($target,$max,$randomize)=@_;
     my $result;
   
     my ($answer,@whichfoils)=&whichfoils($max,$randomize);
     if ($Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"} =~ /^correct/ || ($Apache::inputtags::status[-1] eq  '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','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z');
       my $i = 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);
       foreach my $name (@whichfoils) {
         if ($target ne 'tex') {
     $result.="<br /><input type=\"radio\" name=\"HWVAL$Apache::inputtags::response['-1']\" value=\"$temp\" ";
     if (defined($lastresponse{$name})) { $result .= 'checked="on"'; }
     $result .= '>'.$Apache::response::foilgroup{$name.'.text'}."</input>\n";
     if ($Apache::lonhomework::type eq 'exam') {
         $result .= '<table border="1"><tr><td>A: &nbsp;&nbsp;Correct</td><td>B: &nbsp;&nbsp;Incorrect</td></tr></table>';
     }
         } else {
     if ($Apache::lonhomework::type eq 'exam') {
         $result .= '{\small \textbf{'.$alphabet[$i].'}}$\bigcirc$'.$Apache::response::foilgroup{$name.'.text'}.'\\\\';  #' stupid emacs
         $i++;
     } else {
         $result .= '\vspace*{-2 mm}\item '.$Apache::response::foilgroup{$name.'.text'};
     }
         }
         $temp++;
       }
     }
     if ($target ne 'tex') { $result.="<br />"; } else { $result.='\vskip 0 mm '; }
     return $result;
   }
   
   sub displayanswers {
     my ($max,$randomize)=@_;
     my ($answer,@whichopt) = &whichfoils($max,$randomize);
     my $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') {
       if (defined(@{ $Apache::response::conceptgroup{'names'} })) {
         my @names = @{ $Apache::response::conceptgroup{'names'} };
         my $pick=int(&Math::Random::random_uniform() * ($#names+1));
         my $name=$names[$pick];
         push @{ $Apache::response::foilgroup{'names'} }, $name;
         $Apache::response::foilgroup{"$name.text"} =  $Apache::response::conceptgroup{"$name.text"};
         $Apache::response::foilgroup{"$name.value"} = $Apache::response::conceptgroup{"$name.value"};
         $Apache::response::foilgroup{"$name.location"} = $Apache::response::conceptgroup{"$name.location"};
         my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
         $Apache::response::foilgroup{"$name.concept"} = $concept;
         &Apache::lonxml::debug("Selecting $name in $concept");
         my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
         push(@{ $Apache::hint::radiobutton{"$part_id.concepts"} },$concept);
         $Apache::hint::radiobutton{"$part_id.concept.$concept"}=
     $Apache::response::conceptgroup{'names'};
       }
     } elsif ($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 {
   $Apache::lonxml::redirection++;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result='';
     if ($target eq 'web' || $target eq 'tex') {
       &Apache::lonxml::startredirection;
     } elsif ($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)=@_;
   my $args ='';    my $text='';
   if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }    if ($target eq 'web' || $target eq 'tex') { $text=&Apache::lonxml::endredirection; }
   my $name = &Apache::run::run("{$args;".'return $name}',$safeeval);    if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'  || $target eq 'tex') {
   push @{ $Apache::response::foilgroup{'names'} }, $name;      my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
   my $value = &Apache::run::run("{$args;".'return $value}',$safeeval);      if ($value ne 'unused') {
   $Apache::response::foilgroup{"$name.value"} = $value;        my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
   $Apache::response::foilgroup{"$name.text"} = $Apache::lonxml::outputstack;        my $location =&Apache::lonxml::get_param('location',$parstack,$safeeval);
   $Apache::lonxml::redirection--;        if (!$name) { $name=$Apache::lonxml::curdepth; }
         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 '';    return '';
 }  }
   
   sub insert_foil {
     return '
   <foil name="" value="unused">
   <startouttext />
   <endouttext />
   </foil>';
   }
 1;  1;
 __END__  __END__
     
Removed from v.1.2  
changed lines
  Added in v.1.61

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