Annotation of loncom/homework/radiobuttonresponse.pm, revision 1.151

1.22      albertel    1: # The LearningOnline Network with CAPA
                      2: # mutliple choice style responses
1.31      albertel    3: #
1.151   ! raeburn     4: # $Id: radiobuttonresponse.pm,v 1.150 2011/08/26 22:40:17 raeburn Exp $
1.31      albertel    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
1.130     foxr       21: # along with LON-CAPA; if not, write to the Free Software# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
1.31      albertel   22: #
                     23: # /home/httpd/html/adm/gpl.txt
                     24: #
                     25: # http://www.lon-capa.org/
                     26: #
1.1       albertel   27: 
1.137     jms        28: 
                     29: 
1.1       albertel   30: package Apache::radiobuttonresponse;
                     31: use strict;
1.42      albertel   32: use HTML::Entities();
1.85      albertel   33: use Apache::lonlocal;
1.100     albertel   34: use Apache::lonnet;
1.115     foxr       35: use Apache::response;
1.1       albertel   36: 
1.120     foxr       37: my $default_bubbles_per_line = 10;
1.121     foxr       38: 
1.116     foxr       39: 
1.36      harris41   40: BEGIN {
1.83      albertel   41:     &Apache::lonxml::register('Apache::radiobuttonresponse',('radiobuttonresponse'));
1.1       albertel   42: }
                     43: 
1.121     foxr       44: sub bubble_line_count {
                     45:     my ($numfoils, $bubbles_per_line) = @_;
                     46:     my $bubble_lines;
                     47:     $bubble_lines = int($numfoils / $bubbles_per_line);
                     48:     if (($numfoils % $bubbles_per_line) != 0) {
                     49: 	$bubble_lines++;
                     50:     }
                     51:     return $bubble_lines;
                     52:     
                     53: }
                     54: 
                     55: 
1.1       albertel   56: sub start_radiobuttonresponse {
1.83      albertel   57:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                     58:     my $result;
1.115     foxr       59: 
1.83      albertel   60:     #when in a radiobutton response use these
                     61:     &Apache::lonxml::register('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup'));
                     62:     push (@Apache::lonxml::namespace,'radiobuttonresponse');
                     63:     my $id = &Apache::response::start_response($parstack,$safeeval);
1.120     foxr       64: 
1.83      albertel   65:     %Apache::hint::radiobutton=();
1.85      albertel   66:     undef(%Apache::response::foilnames);
1.83      albertel   67:     if ($target eq 'meta') {
                     68: 	$result=&Apache::response::meta_package_write('radiobuttonresponse');
                     69:     } elsif ($target eq 'edit' ) {
1.136     bisitz     70: 	$result.=&Apache::edit::start_table($token)
                     71:            .'<tr><td>'.&Apache::lonxml::description($token)
                     72:            .&Apache::loncommon::help_open_topic('Radio_Response_Problems')
                     73:            .'</td>'
                     74:            .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
                     75:            .&Apache::edit::deletelist($target,$token)
                     76:            .'</span></td>'
1.140     raeburn    77:            .'<td>&nbsp;'.&Apache::edit::end_row()
1.136     bisitz     78:            .&Apache::edit::start_spanning_row();
1.83      albertel   79: 	$result.=
                     80: 	    &Apache::edit::text_arg('Max Number Of Shown Foils:','max',
1.141     raeburn    81: 				    $token,'4').'&nbsp;'x 3 .
1.136     bisitz     82: 	    &Apache::edit::select_arg('Randomize Foil Order:','randomize',
1.141     raeburn    83: 				      ['yes','no'],$token).'&nbsp;'x 3 .
                     84: 	    &Apache::edit::select_arg('Display Direction:','direction',
1.103     albertel   85: 				      ['vertical','horizontal'],$token).
1.83      albertel   86: 				      &Apache::edit::end_row().
                     87: 				      &Apache::edit::start_spanning_row()."\n";
                     88:     } elsif ($target eq 'modified') {
                     89: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                     90: 						     $safeeval,'max',
1.103     albertel   91: 						     'randomize','direction');
1.83      albertel   92: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                     93:     } elsif ($target eq 'tex') {
                     94: 	my $type=&Apache::lonxml::get_param('TeXtype',$parstack,$safeeval,
                     95: 					    undef,0);
                     96: 	if ($type eq '1') {
                     97: 	    $result .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}';
                     98: 	} elsif ($type eq 'A') {
                     99: 	    $result .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}';
                    100: 	} elsif ($type eq 'a') {
                    101: 	    $result .= ' \renewcommand{\labelenumi}{\alph{enumi}.}';
                    102: 	} elsif ($type eq 'i') {
                    103: 	    $result .= ' \renewcommand{\labelenumi}{\roman{enumi}.}';
1.88      albertel  104: 	} else {
                    105: 	    $result .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}';
1.83      albertel  106: 	}
1.143     onken     107:         if($env{'form.pdfFormFields'} eq 'yes' && $Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
1.145     onken     108:             $result .= '\begin{itemize}';
1.135     onken     109:         } else {
                    110:             $result .= '\begin{enumerate}';
                    111:         }
1.83      albertel  112:     } elsif ($target eq 'analyze') {
                    113: 	my $part_id="$Apache::inputtags::part.$id";
1.131     raeburn   114:         $Apache::lonhomework::analyze{"$part_id.type"} = 'radiobuttonresponse';
1.83      albertel  115: 	push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
                    116:     }
                    117:     return $result;
1.1       albertel  118: }
                    119: 
                    120: sub end_radiobuttonresponse {
1.83      albertel  121:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    122:     my $result;
                    123:     if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
1.145     onken     124:     if ($target eq 'tex' ) {
                    125:         if($env{'form.pdfFormFields'} eq 'yes' and $Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
                    126:             $result .= '\end{itemize}';
                    127:         } else {
                    128:             $result .= '\end{enumerate}';
                    129:         }
1.135     onken     130:     }
1.83      albertel  131:     &Apache::response::end_response;
                    132:     pop @Apache::lonxml::namespace;
                    133:     &Apache::lonxml::deregister('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup'));
1.85      albertel  134:     undef(%Apache::response::foilnames);
1.83      albertel  135:     return $result;
1.1       albertel  136: }
                    137: 
1.43      albertel  138: %Apache::response::foilgroup=();
1.1       albertel  139: sub start_foilgroup {
1.83      albertel  140:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    141:     %Apache::response::foilgroup=();
                    142:     $Apache::radiobuttonresponse::conceptgroup=0;
1.147     raeburn   143:     &Apache::response::pushrandomnumber(undef,$target);
1.151   ! raeburn   144:     return;
1.5       albertel  145: }
                    146: 
1.15      albertel  147: sub storesurvey {
1.144     raeburn   148:     my ($style) = @_;
1.99      albertel  149:     if ( !&Apache::response::submitted() ) { return ''; }
1.100     albertel  150:     my $response = $env{'form.HWVAL_'.$Apache::inputtags::response['-1']};
1.83      albertel  151:     &Apache::lonxml::debug("Here I am!:$response:");
                    152:     if ( $response !~ /[0-9]+/) { return ''; }
1.96      albertel  153:     my $part = $Apache::inputtags::part;
1.83      albertel  154:     my $id = $Apache::inputtags::response['-1'];
                    155:     my @whichfoils=@{ $Apache::response::foilgroup{'names'} };
                    156:     my %responsehash;
                    157:     $responsehash{$whichfoils[$response]}=$response;
1.96      albertel  158:     my $responsestr=&Apache::lonnet::hash2str(%responsehash);
                    159:     $Apache::lonhomework::results{"resource.$part.$id.submission"}=
                    160: 	$responsestr;
                    161:     my %previous=&Apache::response::check_for_previous($responsestr,$part,$id);
1.144     raeburn   162:     my $ad;
                    163:     if ($style eq 'anonsurvey') {
                    164:         $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='ANONYMOUS';
                    165:     } elsif ($style eq 'anonsurveycred') {
1.146     raeburn   166:         $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='ANONYMOUS_CREDIT';
1.144     raeburn   167:     } elsif ($style eq 'surveycred') {
                    168:         $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED_CREDIT';
                    169:     } else {
                    170:         $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED';
                    171:     }
1.96      albertel  172:     &Apache::response::handle_previous(\%previous,$ad);
1.83      albertel  173:     &Apache::lonxml::debug("submitted a $response<br />\n");
                    174:     return '';
1.15      albertel  175: }
                    176: 
1.120     foxr      177: 
1.32      albertel  178: sub grade_response {
1.123     albertel  179:     my ($answer, $whichfoils, $bubbles_per_line)=@_;
                    180: 
1.99      albertel  181:     if ( !&Apache::response::submitted() ) { return; }
1.83      albertel  182:     my $response;
1.118     foxr      183:     
1.100     albertel  184:     if ($env{'form.submitted'} eq 'scantron') {
1.121     foxr      185: 	$response = &Apache::response::getresponse(1,undef,
1.123     albertel  186: 						   &bubble_line_count(scalar(@{ $whichfoils}),
1.121     foxr      187: 								      $bubbles_per_line),
                    188: 						   $bubbles_per_line);
1.116     foxr      189: 
1.83      albertel  190:     } else {
1.100     albertel  191: 	$response = $env{'form.HWVAL_'.$Apache::inputtags::response['-1']};
1.83      albertel  192:     }
1.120     foxr      193: 
1.118     foxr      194: 
1.83      albertel  195:     if ( $response !~ /[0-9]+/) { return; }
                    196:     my $part=$Apache::inputtags::part;
                    197:     my $id = $Apache::inputtags::response['-1'];
                    198:     my %responsehash;
1.123     albertel  199:     $responsehash{$whichfoils->[$response]}=$response;
1.83      albertel  200:     my $responsestr=&Apache::lonnet::hash2str(%responsehash);
                    201:     my %previous=&Apache::response::check_for_previous($responsestr,
                    202: 						       $part,$id);
                    203:     $Apache::lonhomework::results{"resource.$part.$id.submission"}=
                    204: 	$responsestr;
                    205:     &Apache::lonxml::debug("submitted a $response<br />\n");
                    206:     my $ad;
                    207:     if ($response == $answer) {
                    208: 	$ad='EXACT_ANS';
                    209:     } else {
                    210: 	$ad='INCORRECT';
                    211:     }
                    212:     $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
                    213:     &Apache::response::handle_previous(\%previous,$ad);
1.32      albertel  214: }
                    215: 
1.1       albertel  216: sub end_foilgroup {
1.83      albertel  217:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.29      albertel  218: 
1.83      albertel  219:     my $result;
1.121     foxr      220:     my $bubble_lines;
                    221:     my $answer_count;
1.129     foxr      222:     my $id   = $Apache::inputtags::response['-1'];
                    223:     my $part = $Apache::inputtags::part;
1.151   ! raeburn   224:     my $bubbles_per_line = &getbubblesnum($part,$id);
1.121     foxr      225: 
1.83      albertel  226:     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
                    227: 	$target eq 'tex' || $target eq 'analyze') {
                    228: 	my $style = $Apache::lonhomework::type;
1.93      albertel  229: 	my $direction = &Apache::lonxml::get_param('direction',$parstack,
                    230: 						   $safeeval,'-2');
1.144     raeburn   231: 	if ( (($style eq 'survey') || ($style eq 'surveycred') || 
                    232:               ($style eq 'anonsurvey') || ($style eq 'anonsurveycred')) 
                    233:              && ($target ne 'analyze')) {
1.83      albertel  234: 	    if ($target eq 'web' || $target eq 'tex') {
1.110     foxr      235: 		$result=&displayallfoils($direction, $target);
1.83      albertel  236: 	    } elsif ( $target eq 'answer' ) {
                    237: 		$result=&displayallanswers();
                    238: 	    } elsif ( $target eq 'grade' ) {
1.144     raeburn   239: 		$result=&storesurvey($style);
1.83      albertel  240: 	    }
1.121     foxr      241: 	    $answer_count = scalar(@{$Apache::response::foilgroup{'names'}});
                    242: 
1.83      albertel  243: 	} else {
1.121     foxr      244: 
1.83      albertel  245: 	    my $name;
                    246: 	    my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,
                    247: 						 '-2');
                    248: 	    my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
                    249: 						       $safeeval,'-2');
1.123     albertel  250: 	    my ($answer, @shown) = &whichfoils($max, $randomize);
1.121     foxr      251: 	    $answer_count = scalar(@shown);
                    252: 
1.83      albertel  253: 	    if ($target eq 'web' || $target eq 'tex') {
1.151   ! raeburn   254:                 $result=&displayfoils($target,
1.123     albertel  255: 				      $answer, \@shown,
1.121     foxr      256: 				      $direction,
                    257: 				      $bubbles_per_line);
1.83      albertel  258: 	    } elsif ($target eq 'answer' ) {
1.124     albertel  259: 		$result=&displayanswers($answer, \@shown, $bubbles_per_line);
1.83      albertel  260: 	    } elsif ( $target eq 'grade') {
1.123     albertel  261: 		&grade_response($answer, \@shown, $bubbles_per_line);
1.83      albertel  262: 	    }  elsif ( $target eq 'analyze') {
1.126     foxr      263: 		my $bubble_lines = &bubble_line_count($answer_count, 
                    264: 						      $bubbles_per_line);
1.83      albertel  265: 		&Apache::response::analyze_store_foilgroup(\@shown,
                    266: 							   ['text','value','location']);
1.129     foxr      267: 		my $part_id="$part.$id";
1.83      albertel  268: 		push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },
                    269: 		      ('true','false'));
1.130     foxr      270: 
1.83      albertel  271: 	    }
1.81      albertel  272: 	}
1.111     albertel  273: 	$Apache::lonxml::post_evaluate=0;
1.83      albertel  274:     }
1.114     albertel  275:     if ($target eq 'web') {
                    276: 	&Apache::response::setup_prior_tries_hash(\&format_prior_answer,
                    277: 						  [\%Apache::response::foilgroup]);
                    278:     }
1.128     foxr      279:     &Apache::response::poprandomnumber();
1.121     foxr      280:     $bubble_lines = &bubble_line_count($answer_count, $bubbles_per_line);
1.128     foxr      281:     &Apache::lonxml::increment_counter($bubble_lines,
1.129     foxr      282: 				       "$part.$id");
1.128     foxr      283:     if ($target eq 'analyze') {
                    284: 	&Apache::lonhomework::set_bubble_lines();
                    285:     }
1.83      albertel  286:     return $result;
1.6       albertel  287: }
                    288: 
1.151   ! raeburn   289: sub getbubblesnum {
        !           290:     my ($part,$id) = @_;
        !           291:     my $bubbles_per_line;
        !           292:     my $default_numbubbles = $default_bubbles_per_line;
        !           293:     if (($env{'form.bubbles_per_row'} =~ /^\d+$/) &&
        !           294:         ($env{'form.bubbles_per_row'} > 0)) {
        !           295:         $default_numbubbles = $env{'form.bubbles_per_row'};
        !           296:     }
        !           297:     $bubbles_per_line =
        !           298:         &Apache::response::get_response_param($part."_$id",'numbubbles',
        !           299:                                               $default_numbubbles);
        !           300:     return $bubbles_per_line;
        !           301: }
        !           302: 
1.6       albertel  303: sub getfoilcounts {
1.83      albertel  304:     my @names;
                    305:     my $truecnt=0;
                    306:     my $falsecnt=0;
                    307:     my $name;
                    308:     if ( $Apache::response::foilgroup{'names'} ) {
                    309: 	@names= @{ $Apache::response::foilgroup{'names'} };
1.6       albertel  310:     }
1.83      albertel  311:     foreach $name (@names) {
                    312: 	if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
                    313: 	    $truecnt++;
                    314: 	} elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
                    315: 	    $falsecnt++;
                    316: 	}
                    317:     }
                    318:     return ($truecnt,$falsecnt);
1.5       albertel  319: }
                    320: 
1.114     albertel  321: sub format_prior_answer {
                    322:     my ($mode,$answer,$other_data) = @_;
                    323:     my $foil_data = $other_data->[0];
                    324:     my %response = &Apache::lonnet::str2hash($answer);
                    325:     my ($name)   = keys(%response);
                    326:     return '<span class="LC_prior_radiobutton">'.
                    327: 	$foil_data->{$name.'.text'}.'</span>';
                    328: 
1.112     albertel  329: }
                    330: 
1.15      albertel  331: sub displayallfoils {
1.110     foxr      332:     my ($direction, $target)=@_;
1.83      albertel  333:     my $result;
                    334:     &Apache::lonxml::debug("survey style display");
1.106     albertel  335:     my @names;
                    336:     if ( $Apache::response::foilgroup{'names'} ) {
                    337: 	@names= @{ $Apache::response::foilgroup{'names'} };
                    338:     }
1.120     foxr      339: 
1.83      albertel  340:     my $temp=0;
1.110     foxr      341:     my $i   =0;
1.83      albertel  342:     my $id=$Apache::inputtags::response['-1'];
                    343:     my $part=$Apache::inputtags::part;
1.147     raeburn   344:     my ($lastresponse,$newvariation,$showanswer);
                    345:     if ((($Apache::lonhomework::history{"resource.$part.type"} eq 'randomizetry') ||
                    346:         ($Apache::lonhomework::type eq 'randomizetry')) &&
                    347:         ($Apache::inputtags::status[-1] eq 'CAN_ANSWER')) {
                    348:         if ($env{'form.'.$part.'.rndseed'} ne
                    349:             $Apache::lonhomework::history{"resource.$part.rndseed"}) {
                    350:             $newvariation = 1;
                    351:         }
                    352:     }
                    353:     $showanswer = &Apache::response::show_answer();
                    354:     unless ((($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurvey') || ($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurveycred')) && (defined($env{'form.grade_symb'})) ||
                    355:            ($newvariation && !$showanswer)) {
1.144     raeburn   356:         $lastresponse = 
                    357: 	    $Apache::lonhomework::history{"resource.$part.$id.submission"};
                    358:     }
1.93      albertel  359:     if ($direction eq 'horizontal') { $result.='<table><tr>'; }
1.83      albertel  360:     my %lastresponse=&Apache::lonnet::str2hash($lastresponse);
1.147     raeburn   361:     if ($showanswer) {
1.83      albertel  362: 	foreach my $name (@names) {
                    363: 	    if ($Apache::response::foilgroup{$name.'.value'} ne 'unused') {
1.110     foxr      364: 		if (($direction eq 'horizontal') && ($target ne 'tex')) {
1.93      albertel  365: 		    $result.="<td>";
                    366: 		} else {
1.110     foxr      367: 		    if ($target eq 'tex') {
                    368: 			$result .= '\item \vskip -2mm ';
                    369: 		    } else {
                    370: 			$result.="<br />";
                    371: 		    }
1.93      albertel  372: 		}
1.84      albertel  373: 		if (defined($lastresponse{$name})) {
1.110     foxr      374: 		    if ($target eq 'tex') {
                    375: 			$result .= '}';
                    376: 		    } else {
                    377: 			$result.='<b>';
                    378: 		    }
1.83      albertel  379: 		}
                    380: 		$result .= $Apache::response::foilgroup{$name.'.text'};
1.110     foxr      381: 		if (defined($lastresponse{$name}) && ($target ne 'tex')) {
1.83      albertel  382: 		    $result.='</b>';
                    383: 		}
1.110     foxr      384: 		if (($direction eq 'horizontal') && ($target ne 'tex')) { $result.="</td>"; }
1.83      albertel  385: 	    }
1.45      albertel  386: 	}
1.83      albertel  387:     } else {
                    388: 	foreach my $name (@names) {
                    389: 	    if ($Apache::response::foilgroup{$name.'.value'} ne 'unused') {
1.93      albertel  390: 		if ($direction eq 'horizontal') {
                    391: 		    $result.="<td>";
                    392: 		} else {
1.110     foxr      393: 		    if ($target eq 'tex') {
1.143     onken     394: 		        if($env{'form.pdfFormFields'} eq 'yes' && $Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
1.145     onken     395:                             my $fieldname = $env{'request.symb'}.'&part_'. $Apache::inputtags::part
                    396:                                             .'&radiobuttonresponse'.'&HWVAL_'.$Apache::inputtags::response['-1'];
                    397:                             $result .= '\item[{'.&Apache::lonxml::print_pdf_radiobutton($fieldname,$temp).'}]'
                    398:                                        .$Apache::response::foilgroup{$name.'.text'}."\n";
1.135     onken     399:                         } else {
                    400:                             $result .= '\item \vskip -2mm ';
                    401:                         }
                    402:                     } else {
1.110     foxr      403: 			$result.="<br />";
                    404: 		    }
                    405: 		}
                    406: 		if ($target eq 'tex') {
1.143     onken     407: 		    if($env{'form.pdfFormFields'} ne 'yes' or $Apache::inputtags::status[-1] ne 'CAN_ANSWER') {
1.135     onken     408:                         $result .= '$\bigcirc$'.$Apache::response::foilgroup{$name.'.text'}.'\\\\';  #' stupid emacs
                    409:                     }
1.110     foxr      410: 		    $i++;
                    411: 		} else {
                    412: 		    $result .= '<label>';
1.113     albertel  413: 		    $result.="<input
                    414:                        onchange=\"javascript:setSubmittedPart('$part');\"
                    415:                        type=\"radio\"
                    416:                        name=\"HWVAL_$Apache::inputtags::response['-1']\"
1.142     bisitz    417:                        value=\"$temp\"";
1.147     raeburn   418: 
1.142     bisitz    419: 		    if (defined($lastresponse{$name})) { $result .= ' checked="checked"'; }
1.110     foxr      420: 		    $result .= ' />'.$Apache::response::foilgroup{$name.'.text'}.
                    421: 			'</label>';
1.93      albertel  422: 		}
1.83      albertel  423: 		$temp++;
1.110     foxr      424: 		if ($target ne 'tex') {
                    425: 		    if (($direction eq 'horizontal') && ($target ne 'tex')) { $result.="</td>"; }
                    426: 		} else {
                    427: 		    $result.='\vskip 0 mm ';
                    428: 		}
1.83      albertel  429: 	    }
1.45      albertel  430: 	}
                    431:     }
1.120     foxr      432:     
1.110     foxr      433:     if (($direction eq 'horizontal') && ($target ne 'tex')) { $result.='</tr></table>'; }
1.83      albertel  434:     return $result;
1.15      albertel  435: }
                    436: 
1.122     albertel  437: 
1.28      albertel  438: sub whichfoils {
1.83      albertel  439:     my ($max,$randomize)=@_;
1.28      albertel  440: 
1.83      albertel  441:     my @truelist;
                    442:     my @falselist;
                    443:     my @whichfalse =();
                    444:     my ($truecnt,$falsecnt) = &getfoilcounts();
                    445:     my $count=0;
                    446:     # we will add in 1 of the true statements
1.104     albertel  447:     if ( $max>0 && ($falsecnt+1)>$max) { $count=$max } else { $count=$falsecnt+1; $max=$count; }
1.83      albertel  448:     my $answer=int(&Math::Random::random_uniform() * ($count));
                    449:     &Apache::lonxml::debug("Count is $count, $answer is $answer");
                    450:     my @names;
                    451:     if ( $Apache::response::foilgroup{'names'} ) {
                    452: 	@names= @{ $Apache::response::foilgroup{'names'} };
                    453:     }
                    454:     if (&Apache::response::showallfoils()) {
                    455: 	@whichfalse=@names;
                    456:     } elsif ($randomize eq 'no') {
                    457: 	&Apache::lonxml::debug("No randomization");
                    458: 	my $havetrue=0;
                    459: 	foreach my $name (@names) {
                    460: 	    if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
                    461: 		if (!$havetrue ) {
                    462: 		    push(@whichfalse,$name); $havetrue++; $answer=$#whichfalse;
                    463: 		}
                    464: 	    } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
                    465: 		push (@whichfalse,$name);
                    466: 	    } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'unused') {
                    467: 	    } else {
1.87      albertel  468: 		&Apache::lonxml::error(&HTML::Entities::encode("No valid value assigned ($Apache::response::foilgroup{$name.'.value'}) for foil $name in <foilgroup>",'<>&"'));
1.83      albertel  469: 	    }
                    470: 	}
1.144     raeburn   471: 	if ((!$havetrue) && 
                    472:             ($Apache::lonhomework::type ne 'survey') && 
                    473:             ($Apache::lonhomework::type ne 'surveycred') &&
                    474:             ($Apache::lonhomework::type ne 'anonsurvey') &&
                    475:             ($Apache::lonhomework::type ne 'anonsurveycred')) {
1.134     bisitz    476: 	    &Apache::lonxml::error(&mt('There are no true statements available.').'<br />');
1.97      albertel  477: 	}
1.83      albertel  478:     } else {
                    479: 	my $current=0;
                    480: 	&Apache::lonhomework::showhash(%Apache::response::foilgroup);
                    481: 	my (%top,%bottom);
                    482: 	#first find out where everyone wants to be
                    483: 	foreach my $name (@names) {
                    484: 	    $current++;
                    485: 	    if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
                    486: 		push (@truelist,$name);
                    487: 		if ($Apache::response::foilgroup{$name.'.location'} eq 'top') {
                    488: 		    $top{$name}=$current;
                    489: 		} elsif ($Apache::response::foilgroup{$name.'.location'} eq 'bottom') {
                    490: 		    $bottom{$name}=$current;
                    491: 		}
                    492: 	    } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
                    493: 		push (@falselist,$name);
                    494: 		if ($Apache::response::foilgroup{$name.'.location'} eq 'top') {
                    495: 		    $top{$name}=$current;
                    496: 		} elsif ($Apache::response::foilgroup{$name.'.location'} eq 'bottom') {
                    497: 		    $bottom{$name}=$current;
                    498: 		}
                    499: 	    } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'unused') {
                    500: 	    } else {
1.87      albertel  501: 		&Apache::lonxml::error(&HTML::Entities::encode("No valid value assigned ($Apache::response::foilgroup{$name.'.value'}) for foil $name in <foilgroup>",'<>&"'));
1.83      albertel  502: 	    }
                    503: 	}
                    504: 	#pick a true statement
                    505: 	my $notrue=0;
                    506: 	if (scalar(@truelist) == 0) { $notrue=1; }
                    507: 	my $whichtrue = int(&Math::Random::random_uniform() * ($#truelist+1));
                    508: 	&Apache::lonxml::debug("Max is $max, From $#truelist elms, picking $whichtrue");
                    509: 	my (@toplist, @bottomlist);
                    510: 	my $topcount=0;
                    511: 	my $bottomcount=0;
                    512: 	# assign everyone to either toplist/bottomlist or whichfalse
                    513: 	# which false is randomized, toplist bottomlist are in order
                    514: 	while ((($#whichfalse+$topcount+$bottomcount) < $max-2) && ($#falselist > -1)) {
                    515: 	    &Apache::lonxml::debug("Have $#whichfalse max is $max");
                    516: 	    my $afalse=int(&Math::Random::random_uniform() * ($#falselist+1));
                    517: 	    &Apache::lonxml::debug("From $#falselist elms, picking $afalse");
                    518: 	    $afalse=splice(@falselist,$afalse,1);
                    519: 	    &Apache::lonxml::debug("Picked $afalse");
                    520: 	    &Apache::lonhomework::showhash(('names'=>\@names));
                    521: 	    &Apache::lonhomework::showhash(%top);
                    522: 	    if ($top{$afalse}) {
                    523: 		$toplist[$top{$afalse}]=$afalse;
                    524: 		$topcount++;
                    525: 	    } elsif ($bottom{$afalse}) {
                    526: 		$bottomlist[$bottom{$afalse}]=$afalse;
                    527: 		$bottomcount++;
                    528: 	    } else {
                    529: 		push (@whichfalse,$afalse);
                    530: 	    }
                    531: 	}
                    532: 	&Apache::lonxml::debug("Answer wants $answer");
                    533: 	my $truename=$truelist[$whichtrue];
                    534: 	my $dosplice=1;
1.144     raeburn   535: 	if (($notrue) && 
                    536:             ($Apache::lonhomework::type ne 'survey') &&
                    537:             ($Apache::lonhomework::type ne 'surveycred') &&
                    538:             ($Apache::lonhomework::type ne 'anonsurvey') &&
                    539:             ($Apache::lonhomework::type ne 'anonsurveycred')) {
1.83      albertel  540: 	    $dosplice=0;
1.134     bisitz    541: 	    &Apache::lonxml::error(&mt('There are no true statements available.').'<br />');
1.83      albertel  542: 	}
                    543: 	#insert the true statement, keeping track of where it wants to be
                    544: 	if ($Apache::response::foilgroup{$truename.'.location'} eq 'top' && $dosplice) {
                    545: 	    $toplist[$top{$truename}]=$truename;
                    546: 	    $answer=-1;
                    547: 	    foreach my $top (reverse(@toplist)) {
                    548: 		if ($top) { $answer++;}
                    549: 		if ($top eq $truename) { last; }
1.49      albertel  550: 	    }
1.83      albertel  551: 	    $dosplice=0;
                    552: 	} elsif ($Apache::response::foilgroup{$truename.'.location'} eq 'bottom' && $dosplice) {
                    553: 	    $bottomlist[$bottom{$truename}]=$truename;
                    554: 	    $answer=-1;
                    555: 	    foreach my $bot (@bottomlist) {
                    556: 		if ($bot) { $answer++;}
                    557: 		if ($bot eq $truename) { last; }
1.49      albertel  558: 	    }
1.83      albertel  559: 	    $answer+=$topcount+$#whichfalse+1;
                    560: 	    $dosplice=0;
1.49      albertel  561: 	} else {
1.83      albertel  562: 	    if ($topcount>0 || $bottomcount>0) {
1.150     raeburn   563:                 my $inc = 1;
                    564:                 if (($bottomcount > 0) && ($Apache::lonhomework::type ne 'exam')) {
                    565:                     $inc = 2;
                    566:                 }
                    567:                 $answer=int(&Math::Random::random_uniform() * ($#whichfalse+$inc))
                    568:                         + $topcount;
1.83      albertel  569: 	    }
                    570: 	}
                    571: 	&Apache::lonxml::debug("Answer now wants $answer");
                    572: 	#add the top items to the top, bottom items to the bottom
                    573: 	for (my $i=0;$i<=$#toplist;$i++) {
                    574: 	    if ($toplist[$i]) { unshift(@whichfalse,$toplist[$i]) }
1.49      albertel  575: 	}
1.83      albertel  576: 	for (my $i=0;$i<=$#bottomlist;$i++) {
                    577: 	    if ($bottomlist[$i]) { push(@whichfalse,$bottomlist[$i]) }
1.49      albertel  578: 	}
1.83      albertel  579: 	#if the true statement is randomized insert it into the list
                    580: 	if ($dosplice) { splice(@whichfalse,$answer,0,$truelist[$whichtrue]); }
1.49      albertel  581:     }
1.83      albertel  582:     &Apache::lonxml::debug("Answer is $answer");
                    583:     return ($answer,@whichfalse);
1.28      albertel  584: }
                    585: 
                    586: sub displayfoils {
1.123     albertel  587:     my ($target,$answer,$whichfoils,$direction, $bubbles_per_line)=@_;
1.83      albertel  588:     my $result;
1.28      albertel  589: 
1.22      albertel  590:     my $part=$Apache::inputtags::part;
1.83      albertel  591:     my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
                    592:     if ( ($target ne 'tex') &&
                    593: 	 &Apache::response::show_answer() ) {
1.90      albertel  594: 	if ($direction eq 'horizontal') {
                    595: 	    if ($target ne 'tex') {
                    596: 		$result.='<table><tr>';
                    597: 	    }
                    598: 	}
1.123     albertel  599: 	foreach my $name (@{ $whichfoils }) {
1.90      albertel  600: 	    if ($direction eq 'horizontal') {
                    601: 		if ($target ne 'tex') { $result.='<td>'; }
                    602: 	    }
1.83      albertel  603: 	    if ($target ne 'tex') {
                    604: 		$result.="<br />";
                    605: 	    } else {
                    606: 		$result.='\item \vskip -2 mm  ';
                    607: 	    }
                    608: 	    if ($Apache::response::foilgroup{$name.'.value'} eq 'true') { 
1.132     bisitz    609: 		if ($target ne 'tex') {
                    610:                     $result.=&mt('Correct:').'<b>';
                    611:                 } else {
                    612:                     $result.=&mt('Correct:').' \textbf{';
                    613:                 }
1.83      albertel  614: 	    } else {
1.132     bisitz    615: 		$result.=&mt('Incorrect:');
1.83      albertel  616: 	    }
1.94      matthew   617: 	    if ($target eq 'web') { $result.="<label>"; }
1.90      albertel  618: 	    $result.=$Apache::response::foilgroup{$name.'.text'};
1.94      matthew   619: 	    if ($target eq 'web') { $result.="</label>"; }
1.83      albertel  620: 	    if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
                    621: 		if ($target ne 'tex') { $result.='</b>';} else {$result.='}';}
                    622: 	    }
1.90      albertel  623: 	    if ($direction eq 'horizontal') {
                    624: 		if ($target ne 'tex') { $result.='</td>'; }
                    625: 	    }
                    626: 	}
                    627: 	if ($direction eq 'horizontal') {
                    628: 	    if ($target ne 'tex') {
                    629: 		$result.='</tr></table>';
                    630: 	    }
1.83      albertel  631: 	}
                    632:     } else {
                    633: 	my @alphabet = ('A'..'Z');
                    634: 	my $i = 0;
1.116     foxr      635: 	my $bubble_number = 0;
1.124     albertel  636: 	my $line = 0;
1.83      albertel  637: 	my $temp=0;  
                    638: 	my $id=$Apache::inputtags::response['-1'];
                    639: 	my $part=$Apache::inputtags::part;
1.147     raeburn   640:         my ($lastresponse,$newvariation);
                    641:         if ((($Apache::lonhomework::history{"resource.$part.type"} eq 'randomizetry') ||
                    642:              ($Apache::lonhomework::type eq 'randomizetry')) && 
                    643:         ($Apache::inputtags::status[-1] eq 'CAN_ANSWER')) {
                    644:             if ($env{'form.'.$part.'.rndseed'} ne
                    645:                 $Apache::lonhomework::history{"resource.$part.rndseed"}) {
                    646:                 $newvariation = 1;
                    647:             }
                    648:         }
                    649:         unless ($newvariation) {
                    650: 	    $lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"};
                    651:         }
1.83      albertel  652: 	my %lastresponse=&Apache::lonnet::str2hash($lastresponse);
1.90      albertel  653: 	if ($target ne 'tex' && $direction eq 'horizontal') {
                    654: 	    $result.="<table><tr>";
                    655: 	}
1.151   ! raeburn   656:         my $numlines;
        !           657:         if (($target eq 'tex') && ($Apache::lonhomework::type eq 'exam')) {
        !           658:             my $numitems = scalar(@{ $whichfoils });
        !           659:             $numlines = int($numitems/$bubbles_per_line);
        !           660:             if (($numitems % $bubbles_per_line) != 0) {
        !           661:                 $numlines ++;
        !           662:             }
        !           663:             if ($numlines < 1) {
        !           664:                 $numlines = 1;
        !           665:             }
        !           666:             if ($numlines > 1) {
        !           667:                 my $linetext;
        !           668:                 for (my $i=0; $i<$numlines; $i++) {
        !           669:                     $linetext .= $Apache::lonxml::counter+$i.', ';
        !           670:                 }
        !           671:                 $linetext =~ s/,\s$//;
        !           672:                 $result .= '\item[\small {\textbf{'.$linetext.'}}]'.
        !           673:                            ' {\footnotesize '.
        !           674:                            &mt('(Bubble once in [_1] lines)',$numlines).
        !           675:                            '} \hspace*{\fill} \\\\';
        !           676:             } else {
        !           677:                 $result .= '\item[\textbf{'.$Apache::lonxml::counter.'}.]';
        !           678:             }
        !           679:         }
1.123     albertel  680: 	foreach my $name (@{ $whichfoils }) {
1.83      albertel  681: 	    if ($target ne 'tex') {
1.90      albertel  682: 		if ($direction eq 'horizontal') {
                    683: 		    $result.="<td>"; 
                    684: 		} else { 
                    685: 		    $result.="<br />";
                    686: 		} 
                    687: 	    }
                    688: 	    if ($target ne 'tex') { 
1.94      matthew   689:                 $result.= '<label>';
1.113     albertel  690: 		$result.=
                    691: 		    "<input type=\"radio\"
                    692:                             onchange=\"javascript:setSubmittedPart('$part');\"
                    693:                             name=\"HWVAL_$Apache::inputtags::response['-1']\"
1.142     bisitz    694:                             value=\"$temp\"";
                    695: 		if (defined($lastresponse{$name})) { $result .= ' checked="checked"'; }
1.108     albertel  696: 		$result .= ' />'.$Apache::response::foilgroup{$name.'.text'}."</label>";
1.83      albertel  697: 	    } else {
                    698: 		if ($Apache::lonhomework::type eq 'exam') {
1.116     foxr      699: 		    if($bubble_number >= $bubbles_per_line) {
1.124     albertel  700: 			$line++;
1.116     foxr      701: 			$i = 0;
                    702: 			$bubble_number = 0;
                    703: 		    }
1.151   ! raeburn   704:                     my $identifier;
        !           705:                     if ($numlines > 1) {
        !           706:                         $identifier = $Apache::lonxml::counter+$line;
        !           707:                     }
        !           708:                     $result .= '{\small \textbf{'.$identifier.$alphabet[$i].'}}$\bigcirc$'.$Apache::response::foilgroup{$name.'.text'}.'\\\\';  #' stupid emacs
1.124     albertel  709: 		    $i++;
                    710: 		    $bubble_number++;
1.83      albertel  711: 		} else {
1.145     onken     712:                     if($env{'form.pdfFormFields'} eq 'yes' && $Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
                    713:                         my $fieldname = $env{'request.symb'}.'&part_'. $Apache::inputtags::part
                    714:                                         .'&radiobuttonresponse'.'&HWVAL_'.$Apache::inputtags::response['-1'];
                    715:                         $result .= '\item[{'.&Apache::lonxml::print_pdf_radiobutton($fieldname,$temp).'}]'
                    716:                                    .$Apache::response::foilgroup{$name.'.text'}."\n";
                    717:                     } else { 
                    718:                         $result .= '\vspace*{-2 mm}\item '.$Apache::response::foilgroup{$name.'.text'};
                    719:                     }
1.135     onken     720:                 }
1.83      albertel  721: 	    }
1.90      albertel  722: 	    if ($target ne 'tex' && $direction eq 'horizontal') {
                    723: 		$result.="</td>"; 
                    724: 	    }
1.83      albertel  725: 	    $temp++;
                    726: 	}
1.90      albertel  727: 	if ($target ne 'tex' && $direction eq 'horizontal') {
                    728: 	    $result.="</tr></table>";
                    729: 	}
1.83      albertel  730:     }
1.92      albertel  731:     if ($target ne 'tex') { if ($direction ne 'horizontal') { $result.="<br />";} } else { $result.='\vskip 0 mm '; }
1.83      albertel  732:     return $result;
1.81      albertel  733: }
                    734: 
                    735: sub displayallanswers {
1.106     albertel  736:     my @names;
                    737:     if ( $Apache::response::foilgroup{'names'} ) {
                    738: 	@names= @{ $Apache::response::foilgroup{'names'} };
                    739:     }
1.81      albertel  740:     my $result=&Apache::response::answer_header('radiobuttonresponse');
                    741:     foreach my $name (@names) {
                    742: 	$result.=&Apache::response::answer_part('radiobuttonresponse',
                    743: 				$Apache::response::foilgroup{$name.'.value'});
                    744:     }
                    745:     $result.=&Apache::response::answer_footer('radiobuttonresponse');
                    746:     return $result;
1.14      albertel  747: }
                    748: 
1.28      albertel  749: sub displayanswers {
1.124     albertel  750:     my ($answer, $whichopt, $bubbles_per_line)=@_;
                    751:     my $result;
                    752: 
1.105     albertel  753:     if ($Apache::lonhomework::type eq 'exam') {
1.124     albertel  754: 	my $line = int($answer/$bubbles_per_line);
                    755: 	my $correct = ('A'..'Z')[$answer%$bubbles_per_line];
                    756: 	$result .= &Apache::response::answer_header('radiobuttonresponse',
                    757: 						    $line);
                    758: 	$result .= &Apache::response::answer_part('radiobuttonresponse',
                    759: 						  $correct);
                    760:     } else {
                    761: 	$result .= &Apache::response::answer_header('radiobuttonresponse');
1.105     albertel  762:     }
1.123     albertel  763:     foreach my $name (@{ $whichopt }) {
1.83      albertel  764: 	$result.=&Apache::response::answer_part('radiobuttonresponse',
1.105     albertel  765: 						$Apache::response::foilgroup{$name.'.value'});
                    766:     }
1.83      albertel  767:     $result.=&Apache::response::answer_footer('radiobuttonresponse');
                    768:     return $result;
1.28      albertel  769: }
                    770: 
1.14      albertel  771: sub start_conceptgroup {
1.83      albertel  772:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    773:     $Apache::radiobuttonresponse::conceptgroup=1;
                    774:     %Apache::response::conceptgroup=();
                    775:     my $result;
                    776:     if ($target eq 'edit') {
                    777: 	$result.=&Apache::edit::tag_start($target,$token);
                    778: 	$result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').
                    779: 	    &Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    780:     } elsif ($target eq 'modified') {
                    781: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    782: 						     $safeeval,'concept');
                    783: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                    784:     }
                    785:     return $result;
1.14      albertel  786: }
                    787: 
                    788: sub end_conceptgroup {
1.83      albertel  789:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    790:     $Apache::radiobuttonresponse::conceptgroup=0;
                    791:     my $result;
                    792:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'  ||
                    793: 	$target eq 'tex' || $target eq 'analyze') {
                    794: 	&Apache::response::pick_foil_for_concept($target,
                    795: 						 ['value','text','location'],
                    796: 						 \%Apache::hint::radiobutton,
                    797: 						 $parstack,$safeeval);
                    798:     } elsif ($target eq 'edit') {
                    799: 	$result=&Apache::edit::end_table();
                    800:     }
                    801:     return $result;
1.26      albertel  802: }
                    803: 
                    804: sub insert_conceptgroup {
1.83      albertel  805:     my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
                    806:     return $result;
1.1       albertel  807: }
                    808: 
                    809: sub start_foil {
1.83      albertel  810:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    811:     my $result='';
                    812:     if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
                    813: 	&Apache::lonxml::startredirection;
1.95      albertel  814: 	if ($target eq 'analyze') {
                    815: 	    &Apache::response::check_if_computed($token,$parstack,$safeeval,'value');
                    816: 	}
1.83      albertel  817:     } elsif ($target eq 'edit') {
                    818: 	$result=&Apache::edit::tag_start($target,$token);
                    819: 	$result.=&Apache::edit::text_arg('Name:','name',$token);
                    820: 	$result.=&Apache::edit::select_or_text_arg('Correct Option:','value',
                    821: 						   ['unused','true','false'],
                    822: 						   $token);
                    823: 	my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
                    824: 						 $safeeval,'-3');
                    825: 	if ($randomize ne 'no') {
                    826: 	    $result.=&Apache::edit::select_arg('Location:','location',
                    827: 					       ['random','top','bottom'],$token);
                    828: 	}
                    829: 	$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    830:     } elsif ($target eq 'modified') {
                    831: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    832: 						     $safeeval,'value','name',
                    833: 						     'location');
                    834: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                    835:     } 
                    836:     return $result;
1.1       albertel  837: }
                    838: 
                    839: sub end_foil {
1.83      albertel  840:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    841:     my $text='';
                    842:     if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
                    843: 	$text=&Apache::lonxml::endredirection;
                    844:     }
1.85      albertel  845:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'
                    846: 	|| $target eq 'tex' || $target eq 'analyze') {
1.83      albertel  847: 	my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
                    848: 	if ($value ne 'unused') {
                    849: 	    my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
1.102     albertel  850: 	    if ($name eq "") {
1.134     bisitz    851: 		&Apache::lonxml::warning(&mt('Foils without names exist. This can cause problems to malfunction.'));
1.98      albertel  852: 		$name=$Apache::lonxml::curdepth;
                    853: 	    }
1.149     www       854:             if ($name eq "0") {
                    855:                 &Apache::lonxml::error(&mt('Foil name [_1] is not supported. Please choose another name.','<b><tt>'.$name.'</tt></b>'));
                    856:             }
1.85      albertel  857: 	    if (defined($Apache::response::foilnames{$name})) {
1.134     bisitz    858: 		&Apache::lonxml::error(&mt('Foil name [_1] appears more than once. Foil names need to be unique.','<b><tt>'.$name.'</tt></b>'));
1.85      albertel  859: 	    }
1.86      albertel  860: 	    $Apache::response::foilnames{$name}++;
1.85      albertel  861: 	    my $location =&Apache::lonxml::get_param('location',$parstack,
                    862: 						     $safeeval);
1.83      albertel  863: 	    if ( $Apache::radiobuttonresponse::conceptgroup
                    864: 		 && !&Apache::response::showallfoils() ) {
                    865: 		push @{ $Apache::response::conceptgroup{'names'} }, $name;
                    866: 		$Apache::response::conceptgroup{"$name.value"} = $value;
                    867: 		$Apache::response::conceptgroup{"$name.text"} = $text;	
                    868: 		$Apache::response::conceptgroup{"$name.location"} = $location;
                    869: 	    } else {
                    870: 		push @{ $Apache::response::foilgroup{'names'} }, $name;
                    871: 		$Apache::response::foilgroup{"$name.value"} = $value;
                    872: 		$Apache::response::foilgroup{"$name.text"} = $text;
                    873: 		$Apache::response::foilgroup{"$name.location"} = $location;
                    874: 	    }
                    875: 	}
1.18      albertel  876:     }
1.83      albertel  877:     return '';
1.1       albertel  878: }
                    879: 
1.27      albertel  880: sub insert_foil {
1.83      albertel  881:     return '
1.27      albertel  882: <foil name="" value="unused">
                    883: <startouttext />
                    884: <endouttext />
                    885: </foil>';
                    886: }
1.151   ! raeburn   887: 
1.1       albertel  888: 1;
                    889: __END__
1.139     jms       890: 
                    891: 
                    892: 
                    893: =head1 NAME
                    894: 
                    895: Apache::radiobuttonresponse
                    896: 
                    897: =head1 SYNOPSIS
                    898: 
                    899: Handles multiple-choice style responses.
                    900: 
                    901: This is part of the LearningOnline Network with CAPA project
                    902: described at http://www.lon-capa.org.
                    903: 
                    904: =head1 SUBROUTINES
                    905: 
                    906: =over
                    907: 
                    908: =item start_radiobuttonresponse()
                    909: 
                    910: =item bubble_line_count()
                    911: 
                    912: =item end_radiobuttonresponse()
                    913: 
                    914: =item start_foilgroup()
                    915: 
                    916: =item storesurvey()
                    917: 
                    918: =item grade_response()
                    919: 
                    920: =item end_foilgroup()
                    921: 
                    922: =item getfoilcounts()
                    923: 
                    924: =item format_prior_answer()
                    925: 
                    926: =item displayallfoils()
                    927: 
                    928: =item &whichfoils($max,$randomize)
                    929: 
                    930: Randomizes the list of foils.
                    931: Respects
                    932:   - each foils desire to be randomized
                    933:   - the existance of Concept groups of foils (select 1 foil from each)
                    934:   - and selects a single correct statement from all possilble true statments
                    935:   - and limits it to a toal of $max foils
                    936: 
                    937: WARNING: this routine uses the random number generator, it should only
                    938: be called once per target, otherwise it can cause randomness changes in
                    939: homework problems.
                    940: 
                    941: Arguments
                    942:   $max - maximum number of foils to select (including the true one)
                    943:          (so a max of 5 is: 1 true, 4 false)
                    944: 
                    945:   $randomize - whether to randomize the listing of foils, by default
                    946:                will randomize, only if randomize is 'no' will it not
                    947: 
                    948: Returns
                    949:   $answer - location in the array of the correct answer
                    950:   @foils  - array of foil names in to display order
                    951: 
                    952: =item displayfoils()
                    953: 
                    954: =item displayallanswers()
                    955: 
                    956: =item displayanswers()
                    957: 
                    958: =item start_conceptgroup()
                    959: 
                    960: =item end_conceptgroup()
                    961: 
                    962: =item insert_conceptgroup()
                    963: 
                    964: =item start_foil()
                    965: 
                    966: =item end_foil()
                    967: 
                    968: =item insert_foil()
                    969: 
                    970: =back
                    971: 
                    972: =cut
1.1       albertel  973:  

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