File:  [LON-CAPA] / loncom / homework / optionresponse.pm
Revision 1.91: download - view: text, annotated - select for diffs
Fri Oct 24 17:56:42 2003 UTC (20 years, 6 months ago) by sakharuk
Branches: MAIN
CVS tags: HEAD
Bug 2323 (problem numbering when printing exam with answers) fixed for optionresponse problems.

    1: # LearningOnline Network with CAPA
    2: # option list style responses
    3: #
    4: # $Id: optionresponse.pm,v 1.91 2003/10/24 17:56:42 sakharuk Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: # 2/21 Guy
   29: # 01/18 Alex
   30: package Apache::optionresponse;
   31: use strict;
   32: use Apache::response;
   33: 
   34: BEGIN {
   35:   &Apache::lonxml::register('Apache::optionresponse',('optionresponse'));
   36: }
   37: 
   38: sub start_optionresponse {
   39:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   40:   my $result='';
   41:   #when in a option response use these
   42:   &Apache::lonxml::register('Apache::optionresponse',('foilgroup','foil','conceptgroup'));
   43:   push (@Apache::lonxml::namespace,'optionresponse');
   44:   my $id = &Apache::response::start_response($parstack,$safeeval);
   45:   %Apache::hint::option=();
   46:   if ($target eq 'edit') {
   47:     $result.=&Apache::edit::start_table($token).
   48: 	"<tr><td>Multiple Option Response Question</td><td>Delete:".
   49: 	&Apache::edit::deletelist($target,$token)
   50: 	."</td><td>&nbsp;".
   51:         &Apache::edit::end_row().
   52:         &Apache::edit::start_spanning_row().
   53:         "\n";
   54:     $result.=&Apache::edit::text_arg('Max Number Of Shown Foils:','max',
   55: 				     $token,'4').
   56:         &Apache::edit::select_arg('Randomize Foil Order','randomize',
   57: 				  ['yes','no'],$token).
   58:         &Apache::edit::end_row().&Apache::edit::start_spanning_row();
   59:   } elsif ($target eq 'modified') {
   60:     my $constructtag=&Apache::edit::get_new_args($token,$parstack,
   61: 						 $safeeval,'max','randomize');
   62:     if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
   63:   } elsif ($target eq 'meta') {
   64:     $result=&Apache::response::meta_package_write('optionresponse');
   65:   } elsif ($target eq 'analyze') {
   66:     my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
   67:     push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
   68:   }
   69:   return $result;
   70: }
   71: 
   72: sub end_optionresponse {
   73:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   74:   &Apache::response::end_response;
   75:   pop @Apache::lonxml::namespace;
   76:   &Apache::lonxml::deregister('Apache::optionresponse',('foilgroup','foil','conceptgroup'));
   77:   my $result;
   78:   if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
   79:   return $result;
   80: }
   81: 
   82: %Apache::response::foilgroup=();
   83: sub start_foilgroup {
   84:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   85: 
   86:   my $result='';
   87:   %Apache::response::foilgroup=();
   88:   $Apache::optionresponse::conceptgroup=0;
   89:   &Apache::response::setrandomnumber();
   90:   if ($target eq 'edit') {
   91:     my $optionlist="<option></option>\n";
   92:     my $option;
   93:     my @opt;
   94:     eval '@opt ='. &Apache::lonxml::get_param('options',$parstack,$safeeval);
   95:     my $count=1;
   96:     foreach $option (@opt) {
   97:       $optionlist.="<option value=\"$count\">$option</option>\n";
   98:       $count++;
   99:     }
  100:     my $insertlist=&Apache::edit::insertlist($target,$token);
  101:     $result.=&Apache::edit::start_table($token);
  102:     $result.= (<<ENDTABLE);
  103:       <tr><td>Select Options</td>
  104:         <td>
  105: 	  Add new Option: <input type="text" name="$Apache::lonxml::curdepth.options" />
  106:         </td>
  107:         <td>Delete an Option:
  108: 	  <select name="$Apache::lonxml::curdepth.deleteopt">$optionlist</select>
  109: ENDTABLE
  110:     $result.= &Apache::edit::end_row();
  111:     $result.= &Apache::edit::start_spanning_row();
  112:     $result.= $insertlist.'<br />';
  113:   }
  114:   if ($target eq 'modified') {
  115:     my @options;
  116:     my $optchanged=0;
  117:     eval '@options ='.&Apache::lonxml::get_param('options',$parstack,$safeeval);
  118:     if ($ENV{"form.$Apache::lonxml::curdepth.deleteopt"}) {
  119:       my $delopt=$ENV{"form.$Apache::lonxml::curdepth.deleteopt"};
  120:       &Apache::lonxml::debug("Deleting :$delopt:");
  121:       splice(@options,$delopt-1,1);
  122:       $optchanged=1;
  123:     }
  124:     if ($ENV{"form.$Apache::lonxml::curdepth.options"}) {
  125:       my $newopt = $ENV{"form.$Apache::lonxml::curdepth.options"};
  126:       if ($options[0]) {
  127: 	push(@options,$newopt);
  128:       } else {
  129: 	$options[0]=$newopt;
  130:       }
  131:       $optchanged=1;
  132:     }
  133:     if ($optchanged) {
  134:       $result = "<foilgroup options=\"(";
  135:       foreach my $option (@options) {
  136: 	$option=~s/\'/\\\'/g;
  137: 	&Apache::lonxml::debug("adding option :$option:");
  138: 	$result .="'".$option."',";
  139:       }
  140:       chop $result;
  141:       $result.=')">';
  142:     } # else nothing changed so just use the default mechanism
  143:   }
  144:   if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
  145:       $result .= ' \begin{enumerate} ';
  146:   }
  147:   return $result;
  148: }
  149: 
  150: sub end_foilgroup {
  151:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  152:   
  153:   my $result;
  154:   if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || $target eq 'tex' || $target eq 'analyze') {
  155:     my $tex_option_switch=&Apache::lonxml::get_param('texoptions',$parstack,$safeeval);
  156:     my $name;
  157:     my @opt;
  158:     eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval);
  159:     if ($target eq 'tex' && $tex_option_switch eq 'nochoice') {@opt=();}
  160:     &Apache::lonxml::debug("Options are $#opt");
  161:     my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
  162:     my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
  163: 					       $safeeval,'-2');
  164:     if ($target eq 'web' || $target eq 'tex') {
  165:       $result.=&displayfoils($target,$max,$randomize,@opt);
  166:     } elsif ( $target eq 'answer') {
  167:       $result.=&displayanswers($max,$randomize,@opt);
  168:     } elsif ( $target eq 'analyze') {
  169:       my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
  170:       foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
  171: 	if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
  172: 	push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
  173: 	$Apache::lonhomework::analyze{"$part_id.foil.value.$name"} =
  174: 	  $Apache::response::foilgroup{"$name.value"};
  175: 	$Apache::lonhomework::analyze{"$part_id.foil.text.$name"} =
  176: 	  $Apache::response::foilgroup{"$name.text"};
  177:       }
  178:       push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },@opt);
  179:       push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} },&whichfoils($max,$randomize));
  180:     } elsif ( $target eq 'grade') {
  181:       if ( defined $ENV{'form.submitted'}) {
  182: 	my @whichopt = &whichfoils($max,$randomize);
  183: 	my $temp=1;my $name;
  184: 	my %responsehash;
  185: 	my %grade;
  186: 	my $right=0;
  187: 	my $wrong=0;
  188: 	my $ignored=0;
  189: 	foreach $name (@whichopt) {
  190: 	  my $response=&Apache::response::getresponse($temp);
  191: 	  if ($ENV{'form.submitted'} eq 'scantron') {
  192: 	      $response = $opt[$response];
  193: 	  }
  194: 	  $responsehash{$name}=$response;
  195: 	  if ( $response =~ /[^\s]/) {
  196: 	    my $value=$Apache::response::foilgroup{$name.'.value'};
  197: 	    &Apache::lonxml::debug("submitted a $response for $value<br />\n");
  198: 	    if ($value eq $response) {
  199: 		$grade{$name}='1'; $right++;
  200: 	    } else {
  201: 		$grade{$name}='0'; $wrong++;
  202: 	    }
  203: 	  } else {
  204: 	    $ignored++;
  205: 	  }
  206: 	  $temp++;
  207: 	}
  208: 	my $part=$Apache::inputtags::part;
  209: 	my $id = $Apache::inputtags::response['-1'];
  210: 	my $responsestr=&Apache::lonnet::hash2str(%responsehash);
  211: 	my $gradestr   =&Apache::lonnet::hash2str(%grade);
  212: 	my %previous=&Apache::response::check_for_previous($responsestr,
  213: 							   $part,$id);
  214: 	&Apache::lonxml::debug("Got $right right and $wrong wrong, and $ignored were ignored");
  215: 	$Apache::lonhomework::results{"resource.$part.$id.submission"}=
  216: 	    $responsestr;
  217: 	$Apache::lonhomework::results{"resource.$part.$id.submissiongrading"}=$gradestr;
  218: 	
  219: 	if (!$Apache::lonhomework::scantronmode) {
  220: 	    my $ad;
  221: 	    if ($wrong==0 && $ignored==0) {
  222: 		$ad='EXACT_ANS';
  223: 	    } elsif ($wrong==0 && $right==0) {
  224: 		#nothing submitted
  225: 	    } else {
  226: 		if ($ignored==0) {
  227: 		    $ad='INCORRECT';
  228: 		} else {
  229: 		    $ad='MISSING_ANSWER';
  230: 		}
  231: 	    }
  232: 	    $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
  233: 	    &Apache::response::handle_previous(\%previous,$ad);
  234: 	} else {
  235: 	    my $ad;
  236: 	    if ($wrong==0 && $right==0) {
  237: 		#nothing submitted
  238: 	    } else {
  239: 		$ad='ASSIGNED_SCORE';
  240: 	    }
  241: 	    $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
  242: 	    $Apache::lonhomework::results{"resource.$part.$id.awarded"}=
  243: 		$right/(scalar(@whichopt));
  244: 	    $Apache::lonhomework::results{"resource.$part.$id.numfoils"}=
  245: 		scalar(@whichopt);
  246: 	}
  247:       }
  248:     }
  249:     if ($target ne 'answer') {&Apache::lonxml::increment_counter(&getfoilcounts($max));}
  250:   } elsif ($target eq 'edit') {
  251:     $result.=&Apache::edit::end_table();
  252:   }
  253:   if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
  254:       $result .= '\end{enumerate}';
  255:   }
  256:   return $result;
  257: }
  258: 
  259: sub getfoilcounts {
  260:   my ($max)=@_;
  261:   # +1 since instructors will count from 1
  262:   my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
  263:   if (&Apache::response::showallfoils()) { $max=$count; }
  264:   if ($count>$max) { $count=$max } 
  265:   &Apache::lonxml::debug("Count is $count from $max");
  266:   return $count;
  267: }
  268: 
  269: sub whichfoils {
  270:     my ($max,$randomize)=@_;
  271:     return &Apache::response::whichorder($max,$randomize,
  272: 					 &Apache::response::showallfoils(),
  273: 					 \%Apache::response::foilgroup);
  274: }
  275: 
  276: sub displayanswers {
  277:   my ($max,$randomize,@opt)=@_;
  278:   if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
  279:   my @names = @{ $Apache::response::foilgroup{'names'} };
  280:   my @whichopt = &whichfoils($max,$randomize);
  281:   my $result=&Apache::response::answer_header('optionresponse');
  282:   foreach my $name (@whichopt) {
  283:     $result.=&Apache::response::answer_part('optionresponse',
  284: 		     $Apache::response::foilgroup{$name.'.value'})
  285:   }
  286:   $result.=&Apache::response::answer_footer('optionresponse');
  287:   return $result;
  288: }
  289: 
  290: sub displayfoils {
  291:   my ($target,$max,$randomize,@opt)=@_;
  292:   if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
  293:   my @names = @{ $Apache::response::foilgroup{'names'} };
  294:   my @truelist;
  295:   my @falselist;
  296:   my $result;  
  297:   my $name;
  298:   my $displayoptionintex=0;
  299:   my @alphabet = ('A'..'Z');
  300:   my @whichopt = &whichfoils($max,$randomize);
  301:   my $part=$Apache::inputtags::part;
  302:   my $id=$Apache::inputtags::response[-1];
  303:   my $break;
  304:   my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
  305:   if ( ($target ne 'tex') &&
  306:        &Apache::response::show_answer() ) {
  307:     my $temp=1;
  308:     foreach $name (@whichopt) {
  309: 	my $text=$Apache::response::foilgroup{$name.'.text'};
  310: 	my %lastresponse=&Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
  311: 	my $lastopt=$lastresponse{$name};
  312: 	if ($text!~/^\s*$/) {
  313: 	    if ($target eq 'tex') {
  314: 		$break='\vskip 0 mm ';
  315: 	    } elsif ($target eq 'web') {
  316: 		$break='<br />';
  317: 	    }
  318: 	}
  319: 	$result.=$break;
  320: 	if ($target eq 'web') {
  321: 	    my $value=$Apache::response::foilgroup{$name.'.value'};
  322: 	    if (!($text=~s|<drawoptionlist\s*/>|$value|)) {
  323: 		if ($text=~/^\s*$/) {
  324: 		    $text=$value.$text;
  325: 		} else {
  326: 		    $text=$value.': '.$text;
  327: 		}
  328: 	    }
  329: 	    $result.=$text."\n";
  330:       } elsif ($target eq 'tex') {
  331: 	  $Apache::response::foilgroup{$name.'.text'}=~s/\\item//;
  332: 	  if ($max>1) {$result .='\item ';}
  333:  	  $result .=' \textit{'.$Apache::response::foilgroup{$name.'.value'}.'}'.
  334: 	      ":".$Apache::response::foilgroup{$name.'.text'}."\n";
  335:       }
  336:       if ($Apache::lonhomework::type eq 'exam') {
  337: 	if ($target ne 'tex') {
  338: 	  $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
  339:         } else {
  340: 	  $result.=&bubbles(\@alphabet,\@opt);
  341:         }
  342:       }
  343:       $temp++;
  344:     }
  345:   } else {
  346:     my $temp=1;
  347:     my %lastresponse=&Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
  348:     my $internal_counter=$Apache::lonxml::counter;
  349:     foreach $name (@whichopt) {
  350:       my $text=$Apache::response::foilgroup{$name.'.text'};
  351:       if ($text!~/^\s*$/) {
  352: 	  if ($target eq 'tex') {
  353: 	      $break='\vskip 0 mm ';
  354: 	  } elsif ($target eq 'web') {
  355: 	      $break='<br />';
  356: 	  }
  357:       }
  358:       my $lastopt=$lastresponse{$name};
  359:       my $optionlist="<option></option>\n";
  360:       my $option;
  361:       foreach $option (@opt) {
  362: 	if ($option eq $lastopt) {
  363: 	  $optionlist.="<option selected=\"on\">$option</option>\n";
  364: 	} else {
  365: 	  $optionlist.="<option>$option</option>\n";
  366: 	}
  367:       }
  368:       if ($target ne 'tex') {
  369: 	  if ($Apache::lonhomework::type ne 'exam') {
  370: 	    $optionlist='<select name="HWVAL_'.
  371: 	      $Apache::inputtags::response['-1'].':'.$temp.'">'.
  372: 		  $optionlist."</select>\n";
  373: 	  }
  374: 	  my $text=$Apache::response::foilgroup{$name.'.text'};
  375: 	  if (!($text=~s|<drawoptionlist\s*/>|$optionlist|) && $Apache::lonhomework::type ne 'exam') {
  376: 	      $text=$optionlist.$text;
  377: 	  }
  378: 	  $result.=$break.$text."\n";
  379: 	  if ($Apache::lonhomework::type eq 'exam') {
  380: 	    $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
  381: 	  }
  382: 	  $temp++;
  383:       } else {
  384:           my $texoptionlist = &optionlist_correction($optionlist);
  385: 	  if ($displayoptionintex == 0) {
  386: 	      if ($Apache::lonhomework::type eq 'exam') {$texoptionlist='';} #if exam we do not need to show optionlist
  387: 	      if ($Apache::response::foilgroup{$name.'.text'}=~m/\\item /) {
  388: 		if ($Apache::lonhomework::type eq 'exam') {
  389: 	          $Apache::response::foilgroup{$name.'.text'}=~s/\\item/\\vskip 2 mm/;
  390: 	        }
  391: 	        if ($Apache::response::foilgroup{$name.'.text'}=~/<drawoptionlist\s*\/>/) {
  392: 	          $Apache::response::foilgroup{$name.'.text'}=~s|<drawoptionlist\s*/>| \\makebox\[0\.3in\]\[b\]\{\\hrulefill\} |;
  393: 	        }
  394: 		$result.= $texoptionlist.$Apache::response::foilgroup{$name.'.text'};
  395: 	      } else {
  396: 		  if ($Apache::lonhomework::type eq 'exam') {
  397: 		      $result.= $texoptionlist.'  '.$Apache::response::foilgroup{$name.'.text'};
  398: 		  } else {
  399: 		      $result.= $texoptionlist.'\vspace*{-2 mm}\item '.$Apache::response::foilgroup{$name.'.text'};
  400: 		  }
  401: 	      }
  402: 	      if ($Apache::lonhomework::type eq 'exam') {
  403: 		  $result.='\vskip -2 mm\parbox{\textwidth}{\begin{enumerate}\item[\textbf{'.$internal_counter.'}.]\parbox{\textwidth - 5 mm}{'.&bubbles(\@alphabet,\@opt).'}\end{enumerate}} \vskip -9 mm \strut ';
  404: 		  $internal_counter++;
  405: 	      }
  406: 	      $displayoptionintex=1;
  407: 	  } else {
  408: 	      if ($Apache::response::foilgroup{$name.'.text'}=~m/\\item /) {
  409: 		  if ($Apache::lonhomework::type eq 'exam') {
  410: 		      $Apache::response::foilgroup{$name.'.text'}=~s/\\item//;
  411: 		  }
  412: 	        if ($Apache::response::foilgroup{$name.'.text'}=~/<drawoptionlist\s*\/>/) {
  413: 	          $Apache::response::foilgroup{$name.'.text'}=~s|<drawoptionlist\s*/>| \\makebox\[0\.3in\]\[b\]\{\\hrulefill\} |;
  414: 	        }
  415: 		$result.= $Apache::response::foilgroup{$name.'.text'};
  416: 	      } else {
  417: 		  if ($Apache::lonhomework::type eq 'exam') {
  418: 		      $result.= '  '.$Apache::response::foilgroup{$name.'.text'};
  419: 		  } else {
  420: 		      $result.= '\item '.$Apache::response::foilgroup{$name.'.text'};
  421: 		  }
  422: 	      }
  423: 	      if ($Apache::lonhomework::type eq 'exam') {
  424: 		  $result.='\vskip -2 mm \parbox{\textwidth}{\begin{enumerate}\item[\textbf{'.$internal_counter.'}.]\parbox{\textwidth - 5 mm}{'.&bubbles(\@alphabet,\@opt).'}\end{enumerate}} \vskip -9 mm \strut ';
  425: 		  $internal_counter++;
  426: 	      }
  427: 	  }
  428:       }
  429:     }
  430:   }
  431:   if ($target ne 'tex') {
  432:       return $result.$break;
  433:   } else {
  434:       return $result;
  435:   }
  436: }
  437: 
  438: 
  439: sub optionlist_correction {
  440: 
  441:     my $texoptionlist = shift;
  442:     if ($texoptionlist=~/<option selected/ or $texoptionlist=~/<option>[^<]+<\/option>/) {
  443: 	$texoptionlist =~ s/<option><\/option>/\\item \[\] Choices: /;
  444: 	$texoptionlist =~ s/<option>/\{\\bf /g;
  445: 	$texoptionlist =~ s/<option selected="on">/\{\\bf /g;
  446: 	$texoptionlist =~ s/<\/option>/\},/g;
  447: 	$texoptionlist =~ s/,$/\./g;
  448: 	$texoptionlist =~ s/>/\$>\$/g;
  449: 	$texoptionlist =~ s/</\$<\$/g;
  450: 	$texoptionlist =~ s/=/\$=\$/g;
  451: 	$texoptionlist =~ s/\^(\d+)/<m>\$$1\$<\/m>/g;
  452:     } else {
  453: 	$texoptionlist =~ s/<option><\/option>/\\item \[\] \\vskip -5 mm/;
  454:     }
  455:     return $texoptionlist;
  456: }
  457: 
  458: 
  459: sub webbubbles {
  460: 
  461:     my ($ropt,$ralphabet,$temp,$lastopt)=@_;
  462:     my @opt=@$ropt; 
  463:     my @alphabet=@$ralphabet;
  464:     my $result='';
  465:     my $number_of_bubbles = $#opt + 1;
  466:     $result.= '<table border="1"><tr>';
  467:     for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
  468: 	my $checked='';
  469: 	if ($lastopt eq $opt[$ind]) {
  470: 	    $checked=' checked="on" ';
  471: 	}
  472: 	$result.='<td><input type="radio" name="HWVAL_'.
  473: 	    $Apache::inputtags::response['-1'].':'.$temp.
  474: 	    '" value="'.$opt[$ind].'" '.$checked.' />'.$alphabet[$ind].': '.
  475: 	    $opt[$ind].'</td>';
  476:     }
  477:     $result.='</tr></table>';
  478:     return $result;
  479: }
  480: 
  481: 
  482: sub bubbles {
  483: 
  484:     my ($ralphabit,$ropt) = @_;
  485:     my @alphabet = @$ralphabit;
  486:     my @opt = @$ropt;
  487:     my ($result,$head,$line) =('','','');
  488:     my $number_of_bubbles = $#opt + 1;
  489:     my $current_length = 0;
  490:     for (my $ind=0;$ind<=$number_of_bubbles;$ind++) {
  491: 	$current_length += (length($opt[$ind])+length($alphabet[$ind])+2)*2;
  492: 	if ($current_length<0.9*$ENV{'form.textwidth'} and $ind!=$number_of_bubbles) {
  493: 	    $line.='\hskip -1 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';
  494: 	    $head.='lr';
  495: 	} else {
  496: 	    $line=~s/\&\s*$//;
  497: 	    $result.='\vskip -5 mm\begin{tabular}{'.$head.'}\\\\'.$line.'\\\\\end{tabular}';
  498: 	    $line = '\hskip -1 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';;
  499: 	    $head ='lr';
  500: 	    $current_length = (length($opt[$ind])+length($alphabet[$ind]))*2;
  501: 	}
  502: 
  503:     }
  504:     return $result;
  505: }
  506: 
  507: 
  508: sub start_conceptgroup {
  509:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  510:   $Apache::optionresponse::conceptgroup=1;
  511:   %Apache::response::conceptgroup=();
  512:   my $result;
  513:   if ($target eq 'edit') {
  514:     $result.=&Apache::edit::tag_start($target,$token,"Concept Grouped Foils");
  515:     $result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').
  516:         &Apache::edit::end_row().&Apache::edit::start_spanning_row();
  517:   }
  518:   if ($target eq 'modified') {
  519:     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'concept');
  520:     if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
  521:   }
  522:   return $result;
  523: }
  524: 
  525: sub end_conceptgroup {
  526:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  527:   $Apache::optionresponse::conceptgroup=0;
  528:   my $result='';
  529:   if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'
  530:       || $target eq 'tex' || $target eq 'analyze') {
  531:     #if not there aren't any foils to display and thus no question
  532:     if (defined(@{ $Apache::response::conceptgroup{'names'} })) {
  533:       my @names = @{ $Apache::response::conceptgroup{'names'} };
  534:       my $pick=int(&Math::Random::random_uniform() * ($#names+1));
  535:       my $name=$names[$pick];
  536:       push @{ $Apache::response::foilgroup{'names'} }, $name;
  537:       $Apache::response::foilgroup{"$name.value"} =
  538: 	$Apache::response::conceptgroup{"$name.value"};
  539:       $Apache::response::foilgroup{"$name.text"} =
  540: 	$Apache::response::conceptgroup{"$name.text"};
  541:       $Apache::response::foilgroup{"$name.location"} =
  542: 	$Apache::response::conceptgroup{"$name.location"};
  543:       my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
  544:       $Apache::response::foilgroup{"$name.concept"} = $concept;
  545:       &Apache::lonxml::debug("Selecting $name in $concept");
  546:       if ($target eq 'analyze') {
  547: 	my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
  548:         push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
  549: 	      $concept);
  550: 	$Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
  551: 	  $Apache::response::conceptgroup{'names'};
  552: 	foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
  553: 	  push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
  554: 		$name);
  555: 	  $Apache::lonhomework::analyze{"$part_id.foil.value.$name"} =
  556: 	    $Apache::response::conceptgroup{"$name.value"};
  557: 	  $Apache::lonhomework::analyze{"$part_id.foil.text.$name"} =
  558: 	    $Apache::response::conceptgroup{"$name.text"};
  559: 	  $Apache::lonhomework::analyze{"$part_id.foil.location.$name"} =
  560: 	    $Apache::response::conceptgroup{"$name.location"};
  561: 	}
  562:       } elsif ($target eq 'web') {
  563: 	  my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
  564: 	  push(@{ $Apache::hint::option{"$part_id.concepts"} },
  565: 	       $concept);
  566: 	  $Apache::hint::option{"$part_id.concept.$concept"}=
  567: 	      $Apache::response::conceptgroup{'names'};
  568:       }
  569:     }
  570:   } elsif ($target eq 'edit') {
  571:     $result=&Apache::edit::end_table();
  572:   }
  573:   return $result;
  574: }
  575: 
  576: sub insert_conceptgroup {
  577:   my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
  578:   return $result;
  579: }
  580: 
  581: sub start_foil {
  582:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  583:   my $result='';
  584:   if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze' ) {
  585:     &Apache::lonxml::startredirection;
  586:   } elsif ($target eq 'edit') {
  587:     $result=&Apache::edit::tag_start($target,$token,"Foil");
  588:     my $level='-2';
  589:     if ($$tagstack['-2'] eq 'conceptgroup') { $level = '-3'; }
  590:     my @opt;
  591:     eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval,$level);
  592:     $result.=&Apache::edit::text_arg('Name:','name',$token);
  593:     $result.= &Apache::edit::select_or_text_arg('Correct Option:','value',
  594: 					       ['unused',(@opt)],$token,'15');
  595:     my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
  596: 					     $safeeval,'-3');
  597:     if ($randomize ne 'no') {
  598: 	$result.=&Apache::edit::select_arg('Location:','location',
  599: 					   ['random','top','bottom'],$token);
  600:     }
  601:     $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
  602:   } elsif ($target eq 'modified') {
  603:     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
  604: 						 'value','name','location');
  605:     if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
  606:   } 
  607:   return $result;
  608: }
  609: 
  610: sub end_foil {
  611:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  612:   my $text ='';
  613:   my $result = '';
  614:   if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') { 
  615:       $text=&Apache::lonxml::endredirection;
  616:       if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') { $text = '\vspace*{-2 mm}\item '.$text; }
  617:   }
  618:   if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' 
  619:       || $target eq 'tex' || $target eq 'analyze') {
  620:     my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
  621:     if ($value ne 'unused') {
  622:       my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
  623:       my $location =&Apache::lonxml::get_param('location',$parstack,$safeeval);
  624:       &Apache::lonxml::debug("Got a name of :$name:");
  625:       if (!$name) { $name=$Apache::lonxml::curdepth; }
  626:       &Apache::lonxml::debug("Using a name of :$name:");
  627:       if ( $Apache::optionresponse::conceptgroup
  628: 	   && !&Apache::response::showallfoils() ) {
  629: 	push @{ $Apache::response::conceptgroup{'names'} }, $name;
  630: 	$Apache::response::conceptgroup{"$name.value"} = $value;
  631: 	if ($target eq 'tex' and $Apache::lonhomework::type eq 'exam') {
  632: 	    $Apache::response::conceptgroup{"$name.text"} = '\vskip 4 mm $\triangleright$ '.$text;
  633: 	} else {
  634: 	    $Apache::response::conceptgroup{"$name.text"} = $text;
  635: 	}
  636: 	$Apache::response::conceptgroup{"$name.location"} = $location;
  637:       } else {
  638: 	push @{ $Apache::response::foilgroup{'names'} }, $name;
  639: 	$Apache::response::foilgroup{"$name.value"} = $value;
  640: 	if ($target eq 'tex' and $Apache::lonhomework::type eq 'exam') {
  641: 	    $Apache::response::foilgroup{"$name.text"} = '\vskip 5 mm $\triangleright$ '.$text;
  642: 	} else {
  643: 	    $Apache::response::foilgroup{"$name.text"} = $text;
  644: 	}
  645: 	$Apache::response::foilgroup{"$name.location"} = $location;
  646:       }
  647:     }
  648:   }
  649:   if ($target eq 'edit') {
  650:     $result.= &Apache::edit::tag_end($target,$token,'');
  651:   }
  652:   return $result;
  653: }
  654: 
  655: sub insert_foil {
  656:   return '
  657: <foil name="" value="unused">
  658: <startouttext />
  659: <endouttext />
  660: </foil>';
  661: }
  662: 1;
  663: __END__
  664:  

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