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version 1.21, 2001/08/06 19:36:27 version 1.51, 2002/09/26 20:45:00
Line 1 Line 1
 # The LON-CAPA radio button response handler  # The LearningOnline Network with CAPA
   # mutliple choice style responses
 #  #
 # Multiple choice style responses  # $Id$
 #  #
 # YEAR=2001  # Copyright Michigan State University Board of Trustees
 # 1/8,1/11,1/12,1/15,1/19,2/5,2/19,2/21,2/22,3/1,4/23,5/4,5/31 Guy Albertelli  #
 # 6/1,6/2 Guy Albertelli  # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
 # 8/6 Scott Harrison  #
   # 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();
   
 # ======================================================================= BEGIN  BEGIN {
 sub BEGIN {    &Apache::lonxml::register('Apache::radiobuttonresponse',('radiobuttonresponse'));
   &Apache::lonxml::register('Apache::radiobuttonresponse',  
     ('radiobuttonresponse'));  
 }  }
   
 # ================================================= Start radio button response  
 sub start_radiobuttonresponse {  sub start_radiobuttonresponse {
   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;
   #when in a radiobutton response use these    #when in a radiobutton response use these
   &Apache::lonxml::register('Apache::radiobuttonresponse',('foilgroup','foil',    &Apache::lonxml::register('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup'));
    'conceptgroup'));    push (@Apache::lonxml::namespace,'radiobuttonresponse');
   my $id = &Apache::response::start_response($parstack,$safeeval);    my $id = &Apache::response::start_response($parstack,$safeeval);
   return '';    if ($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;
 }  }
   
 # =================================================== End radio button response  
 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') { $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=();
 # ============================================================ Start foil group  
 sub start_foilgroup {  sub start_foilgroup {
     %Apache::response::foilgroup = {};    %Apache::response::foilgroup=();
     $Apache::radiobuttonresponse::conceptgroup = 0;    $Apache::radiobuttonresponse::conceptgroup=0;
     &Apache::response::setrandomnumber();    &Apache::response::setrandomnumber();
     return '';    return '';
 }  }
   
 # ================================================================ Store survey  
 sub storesurvey {  sub storesurvey {
     if ( defined $ENV{'form.submitted'}) {    if ( !defined($ENV{'form.submitted'})) { return ''; }
  my $response = $ENV{'form.HWVAL'.$Apache::inputtags::response['-1']};    my $response = $ENV{'form.HWVAL'.$Apache::inputtags::response['-1']};
  &Apache::lonxml::debug("Here I am!:$response:");    &Apache::lonxml::debug("Here I am!:$response:");
  if ( $response =~ /[^\s]/) {    if ( $response !~ /[0-9]+/) { return ''; }
     my $id = $Apache::inputtags::response['-1'];    my $id = $Apache::inputtags::response['-1'];
     $Apache::lonhomework::results{"resource.$Apache::inputtags::part".    my @whichfoils=@{ $Apache::response::foilgroup{'names'} };
   ".$id.submission"}=$response;    my %responsehash;
     $Apache::lonhomework::results{"resource.$Apache::inputtags::part".    $responsehash{$whichfoils[$response]}=$response;
   ".$id.awarddetail"}='SUBMITTED';    $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.submission"}=&Apache::lonnet::hash2str(%responsehash);
     &Apache::lonxml::debug("submitted a $response<br />\n");    $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}='SUBMITTED';
  }    &Apache::lonxml::debug("submitted a $response<br />\n");
     }    return '';
     return '';  }
   
   sub grade_response {
     my ($max,$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 = $Apache::inputtags::response['-1'];
     my ($answer,@whichfoils)=&whichfoils($max,$randomize);
     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);
 }  }
   
 # ======================================= End foil group (return scalar string)  
 sub end_foilgroup {  sub end_foilgroup {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result;  
     if ($target ne 'meta') {    my $result;
  my $style = &Apache::lonxml::get_param('style',$parstack,$safeeval,    if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || $target eq 'tex') {
        '-2');      my $style = $Apache::lonhomework::type;
  if ( $style eq 'survey' ) {      if ( $style eq 'survey' ) {
     if ($target eq 'web') {        if ($target eq 'web' || $target eq 'answer' || $target eq 'tex') {
  $result = &displayallfoils();   $result=&displayallfoils();
     } elsif ( $target eq 'grade' ) {        } elsif ( $target eq 'grade' ) {
  $result = &storesurvey();   $result=&storesurvey();
     }        }
  } else {      } else {
     my $name;        my $name;
     my ($truecnt,$falsecnt,$max) = &getfoilcounts($parstack,$safeeval);        my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
     my $count = 0;        my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
     # we will add in 1 of the true statements   $safeeval,'-2');
     if (($falsecnt+1) > $max) { $count = $max } else {        if ($target eq 'web' || $target eq 'tex') {
  $count = $falsecnt+1; }   $result=&displayfoils($target,$max,$randomize);
     my $answer = int(rand ($count));        } elsif ($target eq 'answer' ) {
     &Apache::lonxml::debug("Answer is $answer, $count from $max, $falsecnt");   $result=&displayanswers($max,$randomize);
     if ($target eq 'web') {        } elsif ( $target eq 'grade') {
  $result=&displayfoils($max,$answer);   &grade_response($max,$randomize);
     } elsif ( $target eq 'grade') {        }
  if ( defined $ENV{'form.submitted'}) {  
     my $response = $ENV{'form.HWVAL'.  
    $Apache::inputtags::response['-1']};  
     if ( $response =~ /[^\s]/) {  
  my $id = $Apache::inputtags::response['-1'];  
  $Apache::lonhomework::results{"resource.".  
                   $Apache::inputtags::part.".  
                                                   $id.submission"} = $response;  
  &Apache::lonxml::debug("submitted a $response<br />".  
        "\n");  
  if ($response == $answer) {  
     $Apache::lonhomework::results{"resource.".  
       $Apache::inputtags::part.  
      ".$id.awarddetail"} = 'EXACT_ANS';  
  } else {  
     $Apache::lonhomework::results{"resource.".  
       $Apache::inputtags::part.  
      ".$id.awarddetail"} = 'INCORRECT';  
   }  
     }  
  }  
     }  
  }  
     }      }
     return $result;    }
     return $result;
 }  }
   
 # ==================================== Get foil counts (return 3 element array)  
 sub getfoilcounts {  sub getfoilcounts {
     my ($parstack,$safeeval)=@_;    my @names;
     my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');    my $truecnt=0;
     my @names = @{ $Apache::response::foilgroup{'names'} };    my $falsecnt=0;
     my $truecnt = 0;    my $name;
     my $falsecnt = 0;    if ( $Apache::response::foilgroup{'names'} ) {
     my $name;      @names= @{ $Apache::response::foilgroup{'names'} };
     foreach $name (@names) {    }
  if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {    foreach $name (@names) {
     $truecnt++;      if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
  } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {        $truecnt++;
     $falsecnt++;      } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
  }        $falsecnt++;
     }      }
     return ($truecnt,$falsecnt,$max);    }
     return ($truecnt,$falsecnt);
 }  }
   
 # ==================================== Display all foils (return scalar string)  
 sub displayallfoils {  sub displayallfoils {
     my $result;    my $result;
     &Apache::lonxml::debug("survey style display");    &Apache::lonxml::debug("survey style display");
     my @names = @{ $Apache::response::foilgroup{'names'} };    my @names = @{ $Apache::response::foilgroup{'names'} };
     my $temp = 0;    my $temp=0;
     my $id = $Apache::inputtags::response['-1'];    my $id=$Apache::inputtags::response['-1'];
     my $part = $Apache::inputtags::part;    my $part=$Apache::inputtags::part;
     my $lastresponse = $Apache::lonhomework::history{"resource.$part.$id.".    my $lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"};
    "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) {      foreach my $name (@names) {
  if ($Apache::response::foilgroup{$name.'.value'} ne 'unused') {        if ($Apache::response::foilgroup{$name.'.value'} ne 'unused') {
     $result .= "<br /><input type=\"radio\" name=\"HWVAL".   $result.="<br />".$Apache::response::foilgroup{$name.'.value'};
        $Apache::inputtags::response['-1'].   if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
        "\" value=\"$temp\" ";    $result.='<b>';
     if ($lastresponse eq $temp) { $result .= 'checked="on"'; }   }
     $result .= '>'.$Apache::response::foilgroup{$name.'.text'}.   $result .= $Apache::response::foilgroup{$name.'.text'};
        "</input>\n";   if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
     $temp++;    $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;
 }  }
   
 # ======================================== Display foils (return scalar string)  sub whichfoils {
 sub displayfoils {    my ($max,$randomize)=@_;
     my ($max,$answer) = @_;  
     my @names = @{ $Apache::response::foilgroup{'names'} };    my @truelist;
     my @truelist;    my @falselist;
     my @falselist;    my @whichfalse =();
     my $result;    my ($truecnt,$falsecnt) = &getfoilcounts();
     my $name;    my $count=0;
     foreach $name (@names) {    # we will add in 1 of the true statements
  #result .= "<br /><b>$name</b> is <i> $Apache::response::foilgroup{$name.'.value'} </i>";    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{$name.'.value'} eq 'true') {   if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
     push (@truelist,$name);      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{$name.'.value'} eq 'false') {   } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
     push (@falselist,$name);      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{$name.'.value'} eq 'unused') {   } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'unused') {
  } else {   } else {
     &Apache::lonxml::error("Unknown state ".      &Apache::lonxml::error(&HTML::Entities::encode("No valid value assigned ($Apache::response::foilgroup{$name.'.value'}) for foil $name in <foilgroup>"));
   $Apache::response::foilgroup{$name.'.value'}.  
   " for $name in <foilgroup>");  
  }   }
     }      }
     my $whichtrue = int(rand($#truelist+1));      #pick a true statement
     &Apache::lonxml::debug("Max is $max, From $#truelist elms, picking ".      my $whichtrue = int(&Math::Random::random_uniform() * ($#truelist+1));
    $whichtrue);      &Apache::lonxml::debug("Max is $max, From $#truelist elms, picking $whichtrue");
     my @whichfalse = ();      my $numinserted;
     while ((($#whichfalse+1) < $max) && ($#falselist > -1)) {      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");   &Apache::lonxml::debug("Have $#whichfalse max is $max");
  my $afalse = int(rand($#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 $afalse");
  push (@whichfalse,$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,$afalse);
    }
     }      }
     splice(@whichfalse,$answer,0,$truelist[$whichtrue]);      my $truename=$truelist[$whichtrue];
     &Apache::lonxml::debug("the true statement is $answer");      my $dosplice=1;
     if ($Apache::lonhomework::history{      #insert the true statement, keeping track of where it wants to be
  "resource.$Apache::inputtags::part.solved"} =~ /^correct/ ) {      if ($Apache::response::foilgroup{$truename.'.location'} eq 'top' ) {
  foreach $name (@whichfalse) {   $toplist[$top{$truename}]=$truename;
     $result .= "<br />";   $answer=-1;
     if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {    foreach my $top (reverse(@toplist)) {
  $result .= 'Correct';      if ($top) { $answer++;}
     } else {      if ($top eq $truename) { last; }
  $result.='Incorrect';  
     }  
     $result .= ":".$Apache::response::foilgroup{$name.'.text'}.  
        "</input>\n";  
  }   }
    $dosplice=0;
       } elsif ($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 {      } else {
  my $temp=0;   if ($topcount>0) { 
  my $id=$Apache::inputtags::response['-1'];    $answer = int(&Math::Random::random_uniform() * ($#whichfalse+1))
  my $part=$Apache::inputtags::part;      + $topcount;
  my $lastresponse=$Apache::lonhomework::history{"resource.$part.$id.".  
        "submission"};  
  foreach $name (@whichfalse) {  
     $result.="<br /><input type=\"radio\" name=\"HWVAL".  
      $Apache::inputtags::response['-1'].  
      "\" value=\"$temp\" ";  
     if ($lastresponse eq $temp) { $result .= 'checked="on"'; }  
     $result .= '>'.$Apache::response::foilgroup{$name.'.text'}.  
  "</input>\n";  
     $temp++;  
  }   }
     }      }
     return $result."<br />";      #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 {
     $result.='\vskip 0 mm \item ';
         }
         if ($Apache::response::foilgroup{$name.'.value'} eq 'true') { 
     if ($target ne 'tex') { $result.='Correct:<b>'; } else { $result.='Correct: ';}
         } 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 {
       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";
         } else {
     $result .= '\item '.$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;
 }  }
   
 # ========================================================= Start concept group  
 sub start_conceptgroup {  sub start_conceptgroup {
     $Apache::radiobuttonresponse::conceptgroup = 1;    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     %Apache::response::conceptgroup = {};    $Apache::radiobuttonresponse::conceptgroup=1;
     return '';    %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;
 }  }
   
 # =========================================================== End concept group  
 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;    $Apache::radiobuttonresponse::conceptgroup=0;
     if ($target eq 'web' || $target eq 'grade') {    my $result;
  my @names = @{ $Apache::response::conceptgroup{'names'} };    if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'  || $target eq 'tex') {
  my $pick = int rand $#names+1;      if (defined(@{ $Apache::response::conceptgroup{'names'} })) {
  my $name = $names[$pick];        my @names = @{ $Apache::response::conceptgroup{'names'} };
  push @{ $Apache::response::foilgroup{'names'} }, $name;        my $pick=int(&Math::Random::random_uniform() * ($#names+1));
  $Apache::response::foilgroup{"$name.text"} =         my $name=$names[$pick];
     $Apache::response::conceptgroup{"$name.text"};        push @{ $Apache::response::foilgroup{'names'} }, $name;
  $Apache::response::foilgroup{"$name.value"} =        $Apache::response::foilgroup{"$name.text"} =  $Apache::response::conceptgroup{"$name.text"};
     $Apache::response::conceptgroup{"$name.value"};        $Apache::response::foilgroup{"$name.value"} = $Apache::response::conceptgroup{"$name.value"};
  my $concept =         $Apache::response::foilgroup{"$name.location"} = $Apache::response::conceptgroup{"$name.location"};
     &Apache::lonxml::get_param('concept',$parstack,$safeeval);        my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
  $Apache::response::foilgroup{"$name.concept"} = $concept;        $Apache::response::foilgroup{"$name.concept"} = $concept;
  &Apache::lonxml::debug("Selecting $name in $concept");        &Apache::lonxml::debug("Selecting $name in $concept");
     }      }
     return '';    } elsif ($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;
 }  }
   
 # ================================================================== Start foil  
 sub start_foil {  sub start_foil {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result='';
     if ($target eq 'web' || $target eq 'tex') {
     &Apache::lonxml::startredirection;      &Apache::lonxml::startredirection;
     return '';    } elsif ($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 eq 'yes') {
         $result.=&Apache::edit::select_arg('Location:','location',
    ['random','bottom','top'],$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;
 }  }
   
 # ==================================================================== End foil  
 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') { $text = &Apache::lonxml::endredirection; }    if ($target eq 'web' || $target eq 'tex') { $text=&Apache::lonxml::endredirection; }
     if ($target eq 'web' || $target eq 'grade') {    if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'  || $target eq 'tex') {
     my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);      my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
     if ($value ne 'unused') {      if ($value ne 'unused') {
       my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);        my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
       if ( $Apache::radiobuttonresponse::conceptgroup ) {        my $location =&Apache::lonxml::get_param('location',$parstack,$safeeval);
         if (!$name) { $name=$Apache::lonxml::curdepth; }
         if ( $Apache::radiobuttonresponse::conceptgroup
      && !&Apache::response::showallfoils() ) {
  push @{ $Apache::response::conceptgroup{'names'} }, $name;   push @{ $Apache::response::conceptgroup{'names'} }, $name;
  $Apache::response::conceptgroup{"$name.value"} = $value;   $Apache::response::conceptgroup{"$name.value"} = $value;
  $Apache::response::conceptgroup{"$name.text"} = $text;   $Apache::response::conceptgroup{"$name.text"} = $text;
    $Apache::response::conceptgroup{"$name.location"} = $location;
       } else {        } else {
  push @{ $Apache::response::foilgroup{'names'} }, $name;   push @{ $Apache::response::foilgroup{'names'} }, $name;
  $Apache::response::foilgroup{"$name.value"} = $value;   $Apache::response::foilgroup{"$name.value"} = $value;
  $Apache::response::foilgroup{"$name.text"} = $text;   $Apache::response::foilgroup{"$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.1.21  
changed lines
  Added in v.1.51

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