File:  [LON-CAPA] / loncom / homework / optionresponse.pm
Revision 1.93: download - view: text, annotated - select for diffs
Mon Oct 27 19:27:09 2003 UTC (20 years, 7 months ago) by albertel
Branches: MAIN
CVS tags: HEAD
- fixing up analyze mode for radiobutton/option/rank/match/image to all use the smae code

    1: # LearningOnline Network with CAPA
    2: # option list style responses
    3: #
    4: # $Id: optionresponse.pm,v 1.93 2003/10/27 19:27:09 albertel 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: package Apache::optionresponse;
   29: use strict;
   30: use Apache::response;
   31: 
   32: BEGIN {
   33:   &Apache::lonxml::register('Apache::optionresponse',('optionresponse'));
   34: }
   35: 
   36: sub start_optionresponse {
   37:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   38:   my $result='';
   39:   #when in a option response use these
   40:   &Apache::lonxml::register('Apache::optionresponse',('foilgroup','foil','conceptgroup'));
   41:   push (@Apache::lonxml::namespace,'optionresponse');
   42:   my $id = &Apache::response::start_response($parstack,$safeeval);
   43:   %Apache::hint::option=();
   44:   if ($target eq 'edit') {
   45:     $result.=&Apache::edit::start_table($token).
   46: 	"<tr><td>Multiple Option Response Question</td><td>Delete:".
   47: 	&Apache::edit::deletelist($target,$token)
   48: 	."</td><td>&nbsp;".
   49:         &Apache::edit::end_row().
   50:         &Apache::edit::start_spanning_row().
   51:         "\n";
   52:     $result.=&Apache::edit::text_arg('Max Number Of Shown Foils:','max',
   53: 				     $token,'4').
   54:         &Apache::edit::select_arg('Randomize Foil Order','randomize',
   55: 				  ['yes','no'],$token).
   56:         &Apache::edit::end_row().&Apache::edit::start_spanning_row();
   57:   } elsif ($target eq 'modified') {
   58:     my $constructtag=&Apache::edit::get_new_args($token,$parstack,
   59: 						 $safeeval,'max','randomize');
   60:     if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
   61:   } elsif ($target eq 'meta') {
   62:     $result=&Apache::response::meta_package_write('optionresponse');
   63:   } elsif ($target eq 'analyze') {
   64:     my $part_id="$Apache::inputtags::part.$id";
   65:     push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
   66:   }
   67:   return $result;
   68: }
   69: 
   70: sub end_optionresponse {
   71:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   72:   &Apache::response::end_response;
   73:   pop @Apache::lonxml::namespace;
   74:   &Apache::lonxml::deregister('Apache::optionresponse',('foilgroup','foil','conceptgroup'));
   75:   my $result;
   76:   if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
   77:   return $result;
   78: }
   79: 
   80: %Apache::response::foilgroup=();
   81: sub start_foilgroup {
   82:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   83: 
   84:   my $result='';
   85:   %Apache::response::foilgroup=();
   86:   $Apache::optionresponse::conceptgroup=0;
   87:   &Apache::response::setrandomnumber();
   88:   if ($target eq 'edit') {
   89:     my $optionlist="<option></option>\n";
   90:     my $option;
   91:     my @opt;
   92:     eval '@opt ='. &Apache::lonxml::get_param('options',$parstack,$safeeval);
   93:     my $count=1;
   94:     foreach $option (@opt) {
   95:       $optionlist.="<option value=\"$count\">$option</option>\n";
   96:       $count++;
   97:     }
   98:     my $insertlist=&Apache::edit::insertlist($target,$token);
   99:     $result.=&Apache::edit::start_table($token);
  100:     $result.= (<<ENDTABLE);
  101:       <tr><td>Select Options</td>
  102:         <td>
  103: 	  Add new Option: <input type="text" name="$Apache::lonxml::curdepth.options" />
  104:         </td>
  105:         <td>Delete an Option:
  106: 	  <select name="$Apache::lonxml::curdepth.deleteopt">$optionlist</select>
  107: ENDTABLE
  108:     $result.= &Apache::edit::end_row();
  109:     $result.= &Apache::edit::start_spanning_row();
  110:     $result.= $insertlist.'<br />';
  111:   }
  112:   if ($target eq 'modified') {
  113:     my @options;
  114:     my $optchanged=0;
  115:     eval '@options ='.&Apache::lonxml::get_param('options',$parstack,$safeeval);
  116:     if ($ENV{"form.$Apache::lonxml::curdepth.deleteopt"}) {
  117:       my $delopt=$ENV{"form.$Apache::lonxml::curdepth.deleteopt"};
  118:       &Apache::lonxml::debug("Deleting :$delopt:");
  119:       splice(@options,$delopt-1,1);
  120:       $optchanged=1;
  121:     }
  122:     if ($ENV{"form.$Apache::lonxml::curdepth.options"}) {
  123:       my $newopt = $ENV{"form.$Apache::lonxml::curdepth.options"};
  124:       if ($options[0]) {
  125: 	push(@options,$newopt);
  126:       } else {
  127: 	$options[0]=$newopt;
  128:       }
  129:       $optchanged=1;
  130:     }
  131:     if ($optchanged) {
  132:       $result = "<foilgroup options=\"(";
  133:       foreach my $option (@options) {
  134: 	$option=~s/\'/\\\'/g;
  135: 	&Apache::lonxml::debug("adding option :$option:");
  136: 	$result .="'".$option."',";
  137:       }
  138:       chop $result;
  139:       $result.=')">';
  140:     } # else nothing changed so just use the default mechanism
  141:   }
  142:   if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
  143:       $result .= ' \begin{enumerate} ';
  144:   }
  145:   return $result;
  146: }
  147: 
  148: sub end_foilgroup {
  149:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  150:   
  151:   my $result;
  152:   if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || $target eq 'tex' || $target eq 'analyze') {
  153:     my $tex_option_switch=&Apache::lonxml::get_param('texoptions',$parstack,$safeeval);
  154:     my $name;
  155:     my @opt;
  156:     eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval);
  157:     if ($target eq 'tex' && $tex_option_switch eq 'nochoice') {@opt=();}
  158:     &Apache::lonxml::debug("Options are $#opt");
  159:     my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
  160:     my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
  161: 					       $safeeval,'-2');
  162:     if ($target eq 'web' || $target eq 'tex') {
  163:       $result.=&displayfoils($target,$max,$randomize,@opt);
  164:     } elsif ( $target eq 'answer') {
  165:       $result.=&displayanswers($max,$randomize,@opt);
  166:     } elsif ( $target eq 'analyze') {
  167: 	my @shown = &whichfoils($max,$randomize);
  168: 	&Apache::response::analyze_store_foilgroup(\@shown,['text','value']);
  169: 	my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
  170: 	push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },@opt);
  171:     } elsif ( $target eq 'grade') {
  172:       if ( defined $ENV{'form.submitted'}) {
  173: 	my @whichopt = &whichfoils($max,$randomize);
  174: 	my $temp=1;my $name;
  175: 	my %responsehash;
  176: 	my %grade;
  177: 	my $right=0;
  178: 	my $wrong=0;
  179: 	my $ignored=0;
  180: 	foreach $name (@whichopt) {
  181: 	  my $response=&Apache::response::getresponse($temp);
  182: 	  if ($ENV{'form.submitted'} eq 'scantron') {
  183: 	      $response = $opt[$response];
  184: 	  }
  185: 	  $responsehash{$name}=$response;
  186: 	  if ( $response =~ /[^\s]/) {
  187: 	    my $value=$Apache::response::foilgroup{$name.'.value'};
  188: 	    &Apache::lonxml::debug("submitted a $response for $value<br />\n");
  189: 	    if ($value eq $response) {
  190: 		$grade{$name}='1'; $right++;
  191: 	    } else {
  192: 		$grade{$name}='0'; $wrong++;
  193: 	    }
  194: 	  } else {
  195: 	    $ignored++;
  196: 	  }
  197: 	  $temp++;
  198: 	}
  199: 	my $part=$Apache::inputtags::part;
  200: 	my $id = $Apache::inputtags::response['-1'];
  201: 	my $responsestr=&Apache::lonnet::hash2str(%responsehash);
  202: 	my $gradestr   =&Apache::lonnet::hash2str(%grade);
  203: 	my %previous=&Apache::response::check_for_previous($responsestr,
  204: 							   $part,$id);
  205: 	&Apache::lonxml::debug("Got $right right and $wrong wrong, and $ignored were ignored");
  206: 	$Apache::lonhomework::results{"resource.$part.$id.submission"}=
  207: 	    $responsestr;
  208: 	$Apache::lonhomework::results{"resource.$part.$id.submissiongrading"}=$gradestr;
  209: 	
  210: 	if (!$Apache::lonhomework::scantronmode) {
  211: 	    my $ad;
  212: 	    if ($wrong==0 && $ignored==0) {
  213: 		$ad='EXACT_ANS';
  214: 	    } elsif ($wrong==0 && $right==0) {
  215: 		#nothing submitted
  216: 	    } else {
  217: 		if ($ignored==0) {
  218: 		    $ad='INCORRECT';
  219: 		} else {
  220: 		    $ad='MISSING_ANSWER';
  221: 		}
  222: 	    }
  223: 	    $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
  224: 	    &Apache::response::handle_previous(\%previous,$ad);
  225: 	} else {
  226: 	    my $ad;
  227: 	    if ($wrong==0 && $right==0) {
  228: 		#nothing submitted
  229: 	    } else {
  230: 		$ad='ASSIGNED_SCORE';
  231: 	    }
  232: 	    $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
  233: 	    $Apache::lonhomework::results{"resource.$part.$id.awarded"}=
  234: 		$right/(scalar(@whichopt));
  235: 	    $Apache::lonhomework::results{"resource.$part.$id.numfoils"}=
  236: 		scalar(@whichopt);
  237: 	}
  238:       }
  239:     }
  240:     &Apache::lonxml::increment_counter(&getfoilcounts($max));
  241:   } elsif ($target eq 'edit') {
  242:     $result.=&Apache::edit::end_table();
  243:   }
  244:   if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
  245:       $result .= '\end{enumerate}';
  246:   }
  247:   return $result;
  248: }
  249: 
  250: sub getfoilcounts {
  251:   my ($max)=@_;
  252:   # +1 since instructors will count from 1
  253:   my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
  254:   if (&Apache::response::showallfoils()) { $max=$count; }
  255:   if ($count>$max) { $count=$max } 
  256:   &Apache::lonxml::debug("Count is $count from $max");
  257:   return $count;
  258: }
  259: 
  260: sub whichfoils {
  261:     my ($max,$randomize)=@_;
  262:     return &Apache::response::whichorder($max,$randomize,
  263: 					 &Apache::response::showallfoils(),
  264: 					 \%Apache::response::foilgroup);
  265: }
  266: 
  267: sub displayanswers {
  268:   my ($max,$randomize,@opt)=@_;
  269:   if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
  270:   my @names = @{ $Apache::response::foilgroup{'names'} };
  271:   my @whichopt = &whichfoils($max,$randomize);
  272:   my $result=&Apache::response::answer_header('optionresponse');
  273:   foreach my $name (@whichopt) {
  274:     $result.=&Apache::response::answer_part('optionresponse',
  275: 		     $Apache::response::foilgroup{$name.'.value'})
  276:   }
  277:   $result.=&Apache::response::answer_footer('optionresponse');
  278:   return $result;
  279: }
  280: 
  281: sub displayfoils {
  282:   my ($target,$max,$randomize,@opt)=@_;
  283:   if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
  284:   my @names = @{ $Apache::response::foilgroup{'names'} };
  285:   my @truelist;
  286:   my @falselist;
  287:   my $result;  
  288:   my $name;
  289:   my $displayoptionintex=0;
  290:   my @alphabet = ('A'..'Z');
  291:   my @whichopt = &whichfoils($max,$randomize);
  292:   my $part=$Apache::inputtags::part;
  293:   my $id=$Apache::inputtags::response[-1];
  294:   my $break;
  295:   my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
  296:   if ( ($target ne 'tex') &&
  297:        &Apache::response::show_answer() ) {
  298:     my $temp=1;
  299:     foreach $name (@whichopt) {
  300: 	my $text=$Apache::response::foilgroup{$name.'.text'};
  301: 	my %lastresponse=&Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
  302: 	my $lastopt=$lastresponse{$name};
  303: 	if ($text!~/^\s*$/) {
  304: 	    if ($target eq 'tex') {
  305: 		$break='\vskip 0 mm ';
  306: 	    } elsif ($target eq 'web') {
  307: 		$break='<br />';
  308: 	    }
  309: 	}
  310: 	$result.=$break;
  311: 	if ($target eq 'web') {
  312: 	    my $value=$Apache::response::foilgroup{$name.'.value'};
  313: 	    if (!($text=~s|<drawoptionlist\s*/>|$value|)) {
  314: 		if ($text=~/^\s*$/) {
  315: 		    $text=$value.$text;
  316: 		} else {
  317: 		    $text=$value.': '.$text;
  318: 		}
  319: 	    }
  320: 	    $result.=$text."\n";
  321:       } elsif ($target eq 'tex') {
  322: 	  $Apache::response::foilgroup{$name.'.text'}=~s/\\item//;
  323: 	  if ($max>1) {$result .='\item ';}
  324:  	  $result .=' \textit{'.$Apache::response::foilgroup{$name.'.value'}.'}'.
  325: 	      ":".$Apache::response::foilgroup{$name.'.text'}."\n";
  326:       }
  327:       if ($Apache::lonhomework::type eq 'exam') {
  328: 	if ($target ne 'tex') {
  329: 	  $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
  330:         } else {
  331: 	  $result.=&bubbles(\@alphabet,\@opt);
  332:         }
  333:       }
  334:       $temp++;
  335:     }
  336:   } else {
  337:     my $temp=1;
  338:     my %lastresponse=&Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
  339:     my $internal_counter=$Apache::lonxml::counter;
  340:     foreach $name (@whichopt) {
  341:       my $text=$Apache::response::foilgroup{$name.'.text'};
  342:       if ($text!~/^\s*$/) {
  343: 	  if ($target eq 'tex') {
  344: 	      $break='\vskip 0 mm ';
  345: 	  } elsif ($target eq 'web') {
  346: 	      $break='<br />';
  347: 	  }
  348:       }
  349:       my $lastopt=$lastresponse{$name};
  350:       my $optionlist="<option></option>\n";
  351:       my $option;
  352:       foreach $option (@opt) {
  353: 	if ($option eq $lastopt) {
  354: 	  $optionlist.="<option selected=\"on\">$option</option>\n";
  355: 	} else {
  356: 	  $optionlist.="<option>$option</option>\n";
  357: 	}
  358:       }
  359:       if ($target ne 'tex') {
  360: 	  if ($Apache::lonhomework::type ne 'exam') {
  361: 	    $optionlist='<select name="HWVAL_'.
  362: 	      $Apache::inputtags::response['-1'].':'.$temp.'">'.
  363: 		  $optionlist."</select>\n";
  364: 	  }
  365: 	  my $text=$Apache::response::foilgroup{$name.'.text'};
  366: 	  if (!($text=~s|<drawoptionlist\s*/>|$optionlist|) && $Apache::lonhomework::type ne 'exam') {
  367: 	      $text=$optionlist.$text;
  368: 	  }
  369: 	  $result.=$break.$text."\n";
  370: 	  if ($Apache::lonhomework::type eq 'exam') {
  371: 	    $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
  372: 	  }
  373: 	  $temp++;
  374:       } else {
  375:           my $texoptionlist = &optionlist_correction($optionlist);
  376: 	  if ($displayoptionintex == 0) {
  377: 	      if ($Apache::lonhomework::type eq 'exam') {$texoptionlist='';} #if exam we do not need to show optionlist
  378: 	      if ($Apache::response::foilgroup{$name.'.text'}=~m/\\item /) {
  379: 		if ($Apache::lonhomework::type eq 'exam') {
  380: 	          $Apache::response::foilgroup{$name.'.text'}=~s/\\item/\\vskip 2 mm/;
  381: 	        }
  382: 	        if ($Apache::response::foilgroup{$name.'.text'}=~/<drawoptionlist\s*\/>/) {
  383: 	          $Apache::response::foilgroup{$name.'.text'}=~s|<drawoptionlist\s*/>| \\makebox\[0\.3in\]\[b\]\{\\hrulefill\} |;
  384: 	        }
  385: 		$result.= $texoptionlist.$Apache::response::foilgroup{$name.'.text'};
  386: 	      } else {
  387: 		  if ($Apache::lonhomework::type eq 'exam') {
  388: 		      $result.= $texoptionlist.'  '.$Apache::response::foilgroup{$name.'.text'};
  389: 		  } else {
  390: 		      $result.= $texoptionlist.'\vspace*{-2 mm}\item '.$Apache::response::foilgroup{$name.'.text'};
  391: 		  }
  392: 	      }
  393: 	      if ($Apache::lonhomework::type eq 'exam') {
  394: 		  $result.='\vskip -2 mm\parbox{\textwidth}{\begin{enumerate}\item[\textbf{'.$internal_counter.'}.]\parbox{\textwidth - 5 mm}{'.&bubbles(\@alphabet,\@opt).'}\end{enumerate}} \vskip -9 mm \strut ';
  395: 		  $internal_counter++;
  396: 	      }
  397: 	      $displayoptionintex=1;
  398: 	  } else {
  399: 	      if ($Apache::response::foilgroup{$name.'.text'}=~m/\\item /) {
  400: 		  if ($Apache::lonhomework::type eq 'exam') {
  401: 		      $Apache::response::foilgroup{$name.'.text'}=~s/\\item//;
  402: 		  }
  403: 	        if ($Apache::response::foilgroup{$name.'.text'}=~/<drawoptionlist\s*\/>/) {
  404: 	          $Apache::response::foilgroup{$name.'.text'}=~s|<drawoptionlist\s*/>| \\makebox\[0\.3in\]\[b\]\{\\hrulefill\} |;
  405: 	        }
  406: 		$result.= $Apache::response::foilgroup{$name.'.text'};
  407: 	      } else {
  408: 		  if ($Apache::lonhomework::type eq 'exam') {
  409: 		      $result.= '  '.$Apache::response::foilgroup{$name.'.text'};
  410: 		  } else {
  411: 		      $result.= '\item '.$Apache::response::foilgroup{$name.'.text'};
  412: 		  }
  413: 	      }
  414: 	      if ($Apache::lonhomework::type eq 'exam') {
  415: 		  $result.='\vskip -2 mm \parbox{\textwidth}{\begin{enumerate}\item[\textbf{'.$internal_counter.'}.]\parbox{\textwidth - 5 mm}{'.&bubbles(\@alphabet,\@opt).'}\end{enumerate}} \vskip -9 mm \strut ';
  416: 		  $internal_counter++;
  417: 	      }
  418: 	  }
  419:       }
  420:     }
  421:   }
  422:   if ($target ne 'tex') {
  423:       return $result.$break;
  424:   } else {
  425:       return $result;
  426:   }
  427: }
  428: 
  429: 
  430: sub optionlist_correction {
  431: 
  432:     my $texoptionlist = shift;
  433:     if ($texoptionlist=~/<option selected/ or $texoptionlist=~/<option>[^<]+<\/option>/) {
  434: 	$texoptionlist =~ s/<option><\/option>/\\item \[\] Choices: /;
  435: 	$texoptionlist =~ s/<option>/\{\\bf /g;
  436: 	$texoptionlist =~ s/<option selected="on">/\{\\bf /g;
  437: 	$texoptionlist =~ s/<\/option>/\},/g;
  438: 	$texoptionlist =~ s/,$/\./g;
  439: 	$texoptionlist =~ s/>/\$>\$/g;
  440: 	$texoptionlist =~ s/</\$<\$/g;
  441: 	$texoptionlist =~ s/=/\$=\$/g;
  442: 	$texoptionlist =~ s/\^(\d+)/<m>\$$1\$<\/m>/g;
  443:     } else {
  444: 	$texoptionlist =~ s/<option><\/option>/\\item \[\] \\vskip -5 mm/;
  445:     }
  446:     return $texoptionlist;
  447: }
  448: 
  449: 
  450: sub webbubbles {
  451: 
  452:     my ($ropt,$ralphabet,$temp,$lastopt)=@_;
  453:     my @opt=@$ropt; 
  454:     my @alphabet=@$ralphabet;
  455:     my $result='';
  456:     my $number_of_bubbles = $#opt + 1;
  457:     $result.= '<table border="1"><tr>';
  458:     for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
  459: 	my $checked='';
  460: 	if ($lastopt eq $opt[$ind]) {
  461: 	    $checked=' checked="on" ';
  462: 	}
  463: 	$result.='<td><input type="radio" name="HWVAL_'.
  464: 	    $Apache::inputtags::response['-1'].':'.$temp.
  465: 	    '" value="'.$opt[$ind].'" '.$checked.' />'.$alphabet[$ind].': '.
  466: 	    $opt[$ind].'</td>';
  467:     }
  468:     $result.='</tr></table>';
  469:     return $result;
  470: }
  471: 
  472: 
  473: sub bubbles {
  474: 
  475:     my ($ralphabit,$ropt) = @_;
  476:     my @alphabet = @$ralphabit;
  477:     my @opt = @$ropt;
  478:     my ($result,$head,$line) =('','','');
  479:     my $number_of_bubbles = $#opt + 1;
  480:     my $current_length = 0;
  481:     for (my $ind=0;$ind<=$number_of_bubbles;$ind++) {
  482: 	$current_length += (length($opt[$ind])+length($alphabet[$ind])+2)*2;
  483: 	if ($current_length<0.9*$ENV{'form.textwidth'} and $ind!=$number_of_bubbles) {
  484: 	    $line.='\hskip -1 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';
  485: 	    $head.='lr';
  486: 	} else {
  487: 	    $line=~s/\&\s*$//;
  488: 	    $result.='\vskip -5 mm\begin{tabular}{'.$head.'}\\\\'.$line.'\\\\\end{tabular}';
  489: 	    $line = '\hskip -1 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';;
  490: 	    $head ='lr';
  491: 	    $current_length = (length($opt[$ind])+length($alphabet[$ind]))*2;
  492: 	}
  493: 
  494:     }
  495:     return $result;
  496: }
  497: 
  498: 
  499: sub start_conceptgroup {
  500:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  501:   $Apache::optionresponse::conceptgroup=1;
  502:   %Apache::response::conceptgroup=();
  503:   my $result;
  504:   if ($target eq 'edit') {
  505:     $result.=&Apache::edit::tag_start($target,$token,"Concept Grouped Foils");
  506:     $result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').
  507:         &Apache::edit::end_row().&Apache::edit::start_spanning_row();
  508:   }
  509:   if ($target eq 'modified') {
  510:     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'concept');
  511:     if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
  512:   }
  513:   return $result;
  514: }
  515: 
  516: sub end_conceptgroup {
  517:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  518:   $Apache::optionresponse::conceptgroup=0;
  519:   my $result='';
  520:   if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
  521:       $target eq 'tex' || $target eq 'analyze') {
  522:     #if not there aren't any foils to display and thus no question
  523:       &Apache::response::pick_foil_for_concept($target,
  524: 					       ['value','text','location'],
  525: 					       \%Apache::hint::option,
  526: 					       $parstack,$safeeval);
  527:   } elsif ($target eq 'edit') {
  528:     $result=&Apache::edit::end_table();
  529:   }
  530:   return $result;
  531: }
  532: 
  533: sub insert_conceptgroup {
  534:   my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
  535:   return $result;
  536: }
  537: 
  538: sub start_foil {
  539:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  540:   my $result='';
  541:   if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze' ) {
  542:     &Apache::lonxml::startredirection;
  543:   } elsif ($target eq 'edit') {
  544:     $result=&Apache::edit::tag_start($target,$token,"Foil");
  545:     my $level='-2';
  546:     if ($$tagstack['-2'] eq 'conceptgroup') { $level = '-3'; }
  547:     my @opt;
  548:     eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval,$level);
  549:     $result.=&Apache::edit::text_arg('Name:','name',$token);
  550:     $result.= &Apache::edit::select_or_text_arg('Correct Option:','value',
  551: 					       ['unused',(@opt)],$token,'15');
  552:     my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
  553: 					     $safeeval,'-3');
  554:     if ($randomize ne 'no') {
  555: 	$result.=&Apache::edit::select_arg('Location:','location',
  556: 					   ['random','top','bottom'],$token);
  557:     }
  558:     $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
  559:   } elsif ($target eq 'modified') {
  560:     my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
  561: 						 'value','name','location');
  562:     if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
  563:   } 
  564:   return $result;
  565: }
  566: 
  567: sub end_foil {
  568:   my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  569:   my $text ='';
  570:   my $result = '';
  571:   if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') { 
  572:       $text=&Apache::lonxml::endredirection;
  573:       if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') { $text = '\vspace*{-2 mm}\item '.$text; }
  574:   }
  575:   if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' 
  576:       || $target eq 'tex' || $target eq 'analyze') {
  577:     my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
  578:     if ($value ne 'unused') {
  579:       my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
  580:       my $location =&Apache::lonxml::get_param('location',$parstack,$safeeval);
  581:       &Apache::lonxml::debug("Got a name of :$name:");
  582:       if (!$name) { $name=$Apache::lonxml::curdepth; }
  583:       &Apache::lonxml::debug("Using a name of :$name:");
  584:       if ( $Apache::optionresponse::conceptgroup
  585: 	   && !&Apache::response::showallfoils() ) {
  586: 	push @{ $Apache::response::conceptgroup{'names'} }, $name;
  587: 	$Apache::response::conceptgroup{"$name.value"} = $value;
  588: 	if ($target eq 'tex' and $Apache::lonhomework::type eq 'exam') {
  589: 	    $Apache::response::conceptgroup{"$name.text"} = '\vskip 4 mm $\triangleright$ '.$text;
  590: 	} else {
  591: 	    $Apache::response::conceptgroup{"$name.text"} = $text;
  592: 	}
  593: 	$Apache::response::conceptgroup{"$name.location"} = $location;
  594:       } else {
  595: 	push @{ $Apache::response::foilgroup{'names'} }, $name;
  596: 	$Apache::response::foilgroup{"$name.value"} = $value;
  597: 	if ($target eq 'tex' and $Apache::lonhomework::type eq 'exam') {
  598: 	    $Apache::response::foilgroup{"$name.text"} = '\vskip 5 mm $\triangleright$ '.$text;
  599: 	} else {
  600: 	    $Apache::response::foilgroup{"$name.text"} = $text;
  601: 	}
  602: 	$Apache::response::foilgroup{"$name.location"} = $location;
  603:       }
  604:     }
  605:   }
  606:   if ($target eq 'edit') {
  607:     $result.= &Apache::edit::tag_end($target,$token,'');
  608:   }
  609:   return $result;
  610: }
  611: 
  612: sub insert_foil {
  613:   return '
  614: <foil name="" value="unused">
  615: <startouttext />
  616: <endouttext />
  617: </foil>';
  618: }
  619: 1;
  620: __END__
  621:  

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