Annotation of loncom/homework/radiobuttonresponse.pm, revision 1.138

1.22      albertel    1: # The LearningOnline Network with CAPA
                      2: # mutliple choice style responses
1.31      albertel    3: #
1.138   ! jms         4: # $Id: radiobuttonresponse.pm,v 1.137 2008/11/14 21:27:17 jms 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: =head1 NAME
                     30: 
                     31: Apache::radiobuttonresponse
                     32: 
                     33: =head1 SYNOPSIS
                     34: 
                     35: Handles multiple-choice style responses.
                     36: 
                     37: This is part of the LearningOnline Network with CAPA project
                     38: described at http://www.lon-capa.org.
                     39: 
1.138   ! jms        40: =head1 SUBROUTINES
1.137     jms        41: 
                     42: =over
                     43: 
1.138   ! jms        44: =item start_radiobuttonresponse()
1.137     jms        45: 
1.138   ! jms        46: =item bubble_line_count()
1.137     jms        47: 
1.138   ! jms        48: =item end_radiobuttonresponse()
1.137     jms        49: 
1.138   ! jms        50: =item start_foilgroup()
1.137     jms        51: 
1.138   ! jms        52: =item storesurvey()
1.137     jms        53: 
1.138   ! jms        54: =item grade_response()
1.137     jms        55: 
1.138   ! jms        56: =item end_foilgroup()
1.137     jms        57: 
1.138   ! jms        58: =item getfoilcounts()
1.137     jms        59: 
1.138   ! jms        60: =item format_prior_answer()
1.137     jms        61: 
1.138   ! jms        62: =item displayallfoils()
1.137     jms        63: 
1.138   ! jms        64: =item &whichfoils($max,$randomize)
1.137     jms        65: 
                     66: Randomizes the list of foils.
                     67: Respects
                     68:   - each foils desire to be randomized
                     69:   - the existance of Concept groups of foils (select 1 foil from each)
                     70:   - and selects a single correct statement from all possilble true statments
                     71:   - and limits it to a toal of $max foils
                     72: 
                     73: WARNING: this routine uses the random number generator, it should only
                     74: be called once per target, otherwise it can cause randomness changes in
                     75: homework problems.
                     76: 
                     77: Arguments
                     78:   $max - maximum number of foils to select (including the true one)
                     79:          (so a max of 5 is: 1 true, 4 false)
                     80: 
                     81:   $randomize - whether to randomize the listing of foils, by default
                     82:                will randomize, only if randomize is 'no' will it not
                     83: 
                     84: Returns
                     85:   $answer - location in the array of the correct answer
                     86:   @foils  - array of foil names in to display order
                     87: 
1.138   ! jms        88: =item displayfoils()
1.137     jms        89: 
1.138   ! jms        90: =item displayallanswers()
1.137     jms        91: 
1.138   ! jms        92: =item displayanswers()
1.137     jms        93: 
1.138   ! jms        94: =item start_conceptgroup()
1.137     jms        95: 
1.138   ! jms        96: =item end_conceptgroup()
1.137     jms        97: 
1.138   ! jms        98: =item insert_conceptgroup()
1.137     jms        99: 
1.138   ! jms       100: =item start_foil()
1.137     jms       101: 
1.138   ! jms       102: =item end_foil()
1.137     jms       103: 
1.138   ! jms       104: =item insert_foil()
1.137     jms       105: 
                    106: =back
                    107: 
                    108: =cut
                    109: 
1.1       albertel  110: package Apache::radiobuttonresponse;
                    111: use strict;
1.42      albertel  112: use HTML::Entities();
1.85      albertel  113: use Apache::lonlocal;
1.100     albertel  114: use Apache::lonnet;
1.115     foxr      115: use Apache::response;
1.1       albertel  116: 
1.120     foxr      117: my $default_bubbles_per_line = 10;
1.121     foxr      118: 
1.116     foxr      119: 
1.36      harris41  120: BEGIN {
1.83      albertel  121:     &Apache::lonxml::register('Apache::radiobuttonresponse',('radiobuttonresponse'));
1.1       albertel  122: }
                    123: 
1.121     foxr      124: sub bubble_line_count {
                    125:     my ($numfoils, $bubbles_per_line) = @_;
                    126:     my $bubble_lines;
                    127:     $bubble_lines = int($numfoils / $bubbles_per_line);
                    128:     if (($numfoils % $bubbles_per_line) != 0) {
                    129: 	$bubble_lines++;
                    130:     }
                    131:     return $bubble_lines;
                    132:     
                    133: }
                    134: 
                    135: 
1.1       albertel  136: sub start_radiobuttonresponse {
1.83      albertel  137:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    138:     my $result;
1.115     foxr      139: 
1.83      albertel  140:     #when in a radiobutton response use these
                    141:     &Apache::lonxml::register('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup'));
                    142:     push (@Apache::lonxml::namespace,'radiobuttonresponse');
                    143:     my $id = &Apache::response::start_response($parstack,$safeeval);
1.120     foxr      144: 
1.83      albertel  145:     %Apache::hint::radiobutton=();
1.85      albertel  146:     undef(%Apache::response::foilnames);
1.83      albertel  147:     if ($target eq 'meta') {
                    148: 	$result=&Apache::response::meta_package_write('radiobuttonresponse');
                    149:     } elsif ($target eq 'edit' ) {
1.136     bisitz    150: 	$result.=&Apache::edit::start_table($token)
                    151:            .'<tr><td>'.&Apache::lonxml::description($token)
                    152:            .&Apache::loncommon::help_open_topic('Radio_Response_Problems')
                    153:            .'</td>'
                    154:            .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
                    155:            .&Apache::edit::deletelist($target,$token)
                    156:            .'</span></td>'
                    157:            .'<td>&nbsp'.&Apache::edit::end_row()
                    158:            .&Apache::edit::start_spanning_row();
1.83      albertel  159: 	$result.=
                    160: 	    &Apache::edit::text_arg('Max Number Of Shown Foils:','max',
                    161: 				    $token,'4').
1.136     bisitz    162: 	    &Apache::edit::select_arg('Randomize Foil Order:','randomize',
1.83      albertel  163: 				      ['yes','no'],$token).
1.103     albertel  164: 	    &Apache::edit::select_arg('Display Direction','direction',
                    165: 				      ['vertical','horizontal'],$token).
1.83      albertel  166: 				      &Apache::edit::end_row().
                    167: 				      &Apache::edit::start_spanning_row()."\n";
                    168:     } elsif ($target eq 'modified') {
                    169: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    170: 						     $safeeval,'max',
1.103     albertel  171: 						     'randomize','direction');
1.83      albertel  172: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                    173:     } elsif ($target eq 'tex') {
                    174: 	my $type=&Apache::lonxml::get_param('TeXtype',$parstack,$safeeval,
                    175: 					    undef,0);
                    176: 	if ($type eq '1') {
                    177: 	    $result .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}';
                    178: 	} elsif ($type eq 'A') {
                    179: 	    $result .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}';
                    180: 	} elsif ($type eq 'a') {
                    181: 	    $result .= ' \renewcommand{\labelenumi}{\alph{enumi}.}';
                    182: 	} elsif ($type eq 'i') {
                    183: 	    $result .= ' \renewcommand{\labelenumi}{\roman{enumi}.}';
1.88      albertel  184: 	} else {
                    185: 	    $result .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}';
1.83      albertel  186: 	}
1.135     onken     187:         if($env{'form.pdfFormFields'} eq 'yes') {
                    188:             $result .= &Apache::lonxml::print_pdf_hiddenfield('meta', $env{'user.name'}, $env{'user.domain'});
                    189:             $result .= "\n\\\\\n\\\\\n";
                    190:         } else {
                    191:             $result .= '\begin{enumerate}';
                    192:         }
1.83      albertel  193:     } elsif ($target eq 'analyze') {
                    194: 	my $part_id="$Apache::inputtags::part.$id";
1.131     raeburn   195:         $Apache::lonhomework::analyze{"$part_id.type"} = 'radiobuttonresponse';
1.83      albertel  196: 	push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
                    197:     }
                    198:     return $result;
1.1       albertel  199: }
                    200: 
                    201: sub end_radiobuttonresponse {
1.83      albertel  202:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    203:     my $result;
                    204:     if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
1.135     onken     205:     if ($target eq 'tex' and $env{'form.pdfFormFields'} ne 'yes') { 
                    206:         $result .= '\end{enumerate}'; 
                    207:     }
1.83      albertel  208:     &Apache::response::end_response;
                    209:     pop @Apache::lonxml::namespace;
                    210:     &Apache::lonxml::deregister('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup'));
1.85      albertel  211:     undef(%Apache::response::foilnames);
1.83      albertel  212:     return $result;
1.1       albertel  213: }
                    214: 
1.43      albertel  215: %Apache::response::foilgroup=();
1.1       albertel  216: sub start_foilgroup {
1.83      albertel  217:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    218:     my $result;
                    219:     %Apache::response::foilgroup=();
                    220:     $Apache::radiobuttonresponse::conceptgroup=0;
1.89      albertel  221:     &Apache::response::pushrandomnumber();
1.83      albertel  222:     if ($target eq 'tex' && $Apache::lonhomework::type eq 'exam') {
                    223: 	$result.='\item[\textbf{'.$Apache::lonxml::counter.'}.]';
                    224:     }
                    225:     return $result;
1.5       albertel  226: }
                    227: 
1.15      albertel  228: sub storesurvey {
1.99      albertel  229:     if ( !&Apache::response::submitted() ) { return ''; }
1.100     albertel  230:     my $response = $env{'form.HWVAL_'.$Apache::inputtags::response['-1']};
1.83      albertel  231:     &Apache::lonxml::debug("Here I am!:$response:");
                    232:     if ( $response !~ /[0-9]+/) { return ''; }
1.96      albertel  233:     my $part = $Apache::inputtags::part;
1.83      albertel  234:     my $id = $Apache::inputtags::response['-1'];
                    235:     my @whichfoils=@{ $Apache::response::foilgroup{'names'} };
                    236:     my %responsehash;
                    237:     $responsehash{$whichfoils[$response]}=$response;
1.96      albertel  238:     my $responsestr=&Apache::lonnet::hash2str(%responsehash);
                    239:     $Apache::lonhomework::results{"resource.$part.$id.submission"}=
                    240: 	$responsestr;
                    241:     my %previous=&Apache::response::check_for_previous($responsestr,$part,$id);
                    242:     my $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED';
                    243:     &Apache::response::handle_previous(\%previous,$ad);
1.83      albertel  244:     &Apache::lonxml::debug("submitted a $response<br />\n");
                    245:     return '';
1.15      albertel  246: }
                    247: 
1.120     foxr      248: 
1.32      albertel  249: sub grade_response {
1.123     albertel  250:     my ($answer, $whichfoils, $bubbles_per_line)=@_;
                    251: 
1.99      albertel  252:     if ( !&Apache::response::submitted() ) { return; }
1.83      albertel  253:     my $response;
1.118     foxr      254:     
1.100     albertel  255:     if ($env{'form.submitted'} eq 'scantron') {
1.121     foxr      256: 	$response = &Apache::response::getresponse(1,undef,
1.123     albertel  257: 						   &bubble_line_count(scalar(@{ $whichfoils}),
1.121     foxr      258: 								      $bubbles_per_line),
                    259: 						   $bubbles_per_line);
1.116     foxr      260: 
1.83      albertel  261:     } else {
1.100     albertel  262: 	$response = $env{'form.HWVAL_'.$Apache::inputtags::response['-1']};
1.83      albertel  263:     }
1.120     foxr      264: 
1.118     foxr      265: 
1.83      albertel  266:     if ( $response !~ /[0-9]+/) { return; }
                    267:     my $part=$Apache::inputtags::part;
                    268:     my $id = $Apache::inputtags::response['-1'];
                    269:     my %responsehash;
1.123     albertel  270:     $responsehash{$whichfoils->[$response]}=$response;
1.83      albertel  271:     my $responsestr=&Apache::lonnet::hash2str(%responsehash);
                    272:     my %previous=&Apache::response::check_for_previous($responsestr,
                    273: 						       $part,$id);
                    274:     $Apache::lonhomework::results{"resource.$part.$id.submission"}=
                    275: 	$responsestr;
                    276:     &Apache::lonxml::debug("submitted a $response<br />\n");
                    277:     my $ad;
                    278:     if ($response == $answer) {
                    279: 	$ad='EXACT_ANS';
                    280:     } else {
                    281: 	$ad='INCORRECT';
                    282:     }
                    283:     $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
                    284:     &Apache::response::handle_previous(\%previous,$ad);
1.32      albertel  285: }
                    286: 
1.1       albertel  287: sub end_foilgroup {
1.83      albertel  288:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1.29      albertel  289: 
1.83      albertel  290:     my $result;
1.121     foxr      291:     my $bubble_lines;
                    292:     my $bubbles_per_line;
                    293:     my $answer_count;
1.129     foxr      294:     my $id   = $Apache::inputtags::response['-1'];
                    295:     my $part = $Apache::inputtags::part;
1.121     foxr      296:     $bubbles_per_line = 
                    297: 	&Apache::response::get_response_param($Apache::inputtags::part."_$id",
                    298: 					      'numbubbles',
                    299: 					      $default_bubbles_per_line);
                    300: 
                    301: 
1.83      albertel  302:     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
                    303: 	$target eq 'tex' || $target eq 'analyze') {
                    304: 	my $style = $Apache::lonhomework::type;
1.93      albertel  305: 	my $direction = &Apache::lonxml::get_param('direction',$parstack,
                    306: 						   $safeeval,'-2');
1.83      albertel  307: 	if ( $style eq 'survey'  && $target ne 'analyze') {
                    308: 	    if ($target eq 'web' || $target eq 'tex') {
1.110     foxr      309: 		$result=&displayallfoils($direction, $target);
1.83      albertel  310: 	    } elsif ( $target eq 'answer' ) {
                    311: 		$result=&displayallanswers();
                    312: 	    } elsif ( $target eq 'grade' ) {
                    313: 		$result=&storesurvey();
                    314: 	    }
1.121     foxr      315: 	    $answer_count = scalar(@{$Apache::response::foilgroup{'names'}});
                    316: 
1.83      albertel  317: 	} else {
1.121     foxr      318: 
1.83      albertel  319: 	    my $name;
                    320: 	    my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,
                    321: 						 '-2');
                    322: 	    my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
                    323: 						       $safeeval,'-2');
1.123     albertel  324: 	    my ($answer, @shown) = &whichfoils($max, $randomize);
1.121     foxr      325: 	    $answer_count = scalar(@shown);
                    326: 
1.83      albertel  327: 	    if ($target eq 'web' || $target eq 'tex') {
1.121     foxr      328: 		$result=&displayfoils($target,
1.123     albertel  329: 				      $answer, \@shown,
1.121     foxr      330: 				      $direction,
                    331: 				      $bubbles_per_line);
1.83      albertel  332: 	    } elsif ($target eq 'answer' ) {
1.124     albertel  333: 		$result=&displayanswers($answer, \@shown, $bubbles_per_line);
1.83      albertel  334: 	    } elsif ( $target eq 'grade') {
1.123     albertel  335: 		&grade_response($answer, \@shown, $bubbles_per_line);
1.83      albertel  336: 	    }  elsif ( $target eq 'analyze') {
1.126     foxr      337: 		my $bubble_lines = &bubble_line_count($answer_count, 
                    338: 						      $bubbles_per_line);
1.83      albertel  339: 		&Apache::response::analyze_store_foilgroup(\@shown,
                    340: 							   ['text','value','location']);
1.129     foxr      341: 		my $part_id="$part.$id";
1.83      albertel  342: 		push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },
                    343: 		      ('true','false'));
1.130     foxr      344: 
1.83      albertel  345: 	    }
1.81      albertel  346: 	}
1.111     albertel  347: 	$Apache::lonxml::post_evaluate=0;
1.83      albertel  348:     }
1.114     albertel  349:     if ($target eq 'web') {
                    350: 	&Apache::response::setup_prior_tries_hash(\&format_prior_answer,
                    351: 						  [\%Apache::response::foilgroup]);
                    352:     }
1.128     foxr      353:     &Apache::response::poprandomnumber();
1.121     foxr      354:     $bubble_lines = &bubble_line_count($answer_count, $bubbles_per_line);
1.128     foxr      355:     &Apache::lonxml::increment_counter($bubble_lines,
1.129     foxr      356: 				       "$part.$id");
1.128     foxr      357:     if ($target eq 'analyze') {
                    358: 	&Apache::lonhomework::set_bubble_lines();
                    359:     }
1.83      albertel  360:     return $result;
1.6       albertel  361: }
                    362: 
                    363: sub getfoilcounts {
1.83      albertel  364:     my @names;
                    365:     my $truecnt=0;
                    366:     my $falsecnt=0;
                    367:     my $name;
                    368:     if ( $Apache::response::foilgroup{'names'} ) {
                    369: 	@names= @{ $Apache::response::foilgroup{'names'} };
1.6       albertel  370:     }
1.83      albertel  371:     foreach $name (@names) {
                    372: 	if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
                    373: 	    $truecnt++;
                    374: 	} elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
                    375: 	    $falsecnt++;
                    376: 	}
                    377:     }
                    378:     return ($truecnt,$falsecnt);
1.5       albertel  379: }
                    380: 
1.114     albertel  381: sub format_prior_answer {
                    382:     my ($mode,$answer,$other_data) = @_;
                    383:     my $foil_data = $other_data->[0];
                    384:     my %response = &Apache::lonnet::str2hash($answer);
                    385:     my ($name)   = keys(%response);
                    386:     return '<span class="LC_prior_radiobutton">'.
                    387: 	$foil_data->{$name.'.text'}.'</span>';
                    388: 
1.112     albertel  389: }
                    390: 
1.15      albertel  391: sub displayallfoils {
1.110     foxr      392:     my ($direction, $target)=@_;
1.83      albertel  393:     my $result;
                    394:     &Apache::lonxml::debug("survey style display");
1.106     albertel  395:     my @names;
                    396:     if ( $Apache::response::foilgroup{'names'} ) {
                    397: 	@names= @{ $Apache::response::foilgroup{'names'} };
                    398:     }
1.120     foxr      399: 
1.83      albertel  400:     my $temp=0;
1.110     foxr      401:     my $i   =0;
1.83      albertel  402:     my $id=$Apache::inputtags::response['-1'];
                    403:     my $part=$Apache::inputtags::part;
                    404:     my $lastresponse=
                    405: 	$Apache::lonhomework::history{"resource.$part.$id.submission"};
1.93      albertel  406:     if ($direction eq 'horizontal') { $result.='<table><tr>'; }
1.83      albertel  407:     my %lastresponse=&Apache::lonnet::str2hash($lastresponse);
                    408:     if (&Apache::response::show_answer() ) {
                    409: 	foreach my $name (@names) {
                    410: 	    if ($Apache::response::foilgroup{$name.'.value'} ne 'unused') {
1.110     foxr      411: 		if (($direction eq 'horizontal') && ($target ne 'tex')) {
1.93      albertel  412: 		    $result.="<td>";
                    413: 		} else {
1.110     foxr      414: 		    if ($target eq 'tex') {
                    415: 			$result .= '\item \vskip -2mm ';
                    416: 		    } else {
                    417: 			$result.="<br />";
                    418: 		    }
1.93      albertel  419: 		}
1.84      albertel  420: 		if (defined($lastresponse{$name})) {
1.110     foxr      421: 		    if ($target eq 'tex') {
                    422: 			$result .= '}';
                    423: 		    } else {
                    424: 			$result.='<b>';
                    425: 		    }
1.83      albertel  426: 		}
                    427: 		$result .= $Apache::response::foilgroup{$name.'.text'};
1.110     foxr      428: 		if (defined($lastresponse{$name}) && ($target ne 'tex')) {
1.83      albertel  429: 		    $result.='</b>';
                    430: 		}
1.110     foxr      431: 		if (($direction eq 'horizontal') && ($target ne 'tex')) { $result.="</td>"; }
1.83      albertel  432: 	    }
1.45      albertel  433: 	}
1.83      albertel  434:     } else {
                    435: 	foreach my $name (@names) {
                    436: 	    if ($Apache::response::foilgroup{$name.'.value'} ne 'unused') {
1.93      albertel  437: 		if ($direction eq 'horizontal') {
                    438: 		    $result.="<td>";
                    439: 		} else {
1.110     foxr      440: 		    if ($target eq 'tex') {
1.135     onken     441: 		        if($env{'form.pdfFormFields'} eq 'yes') {
                    442:                             my $fieldname = $env{'request.symb'}.
                    443:                                            '&part_'. $Apache::inputtags::part.
                    444:                                            '&radiobuttonresponse'.
                    445:                                            '&HWVAL_' . $Apache::inputtags::response['-1'];
                    446:                             my $value = $temp;
                    447:                             my $text = $Apache::response::foilgroup{$name.'.text'};
                    448:                             $result .= &Apache::lonxml::print_pdf_radiobutton($fieldname,
                    449:                                                                              $value,
                    450:                                                                              $text)."\n";
                    451:                         } else {
                    452:                             $result .= '\item \vskip -2mm ';
                    453:                         }
                    454:                     } else {
1.110     foxr      455: 			$result.="<br />";
                    456: 		    }
                    457: 		}
                    458: 		if ($target eq 'tex') {
1.135     onken     459: 		    if($env{'form.pdfFormFields'} ne 'yes') {
                    460:                         $result .= '$\bigcirc$'.$Apache::response::foilgroup{$name.'.text'}.'\\\\';  #' stupid emacs
                    461:                     }
1.110     foxr      462: 		    $i++;
                    463: 		} else {
                    464: 		    $result .= '<label>';
1.113     albertel  465: 		    $result.="<input
                    466:                        onchange=\"javascript:setSubmittedPart('$part');\"
                    467:                        type=\"radio\"
                    468:                        name=\"HWVAL_$Apache::inputtags::response['-1']\"
                    469:                        value=\"$temp\" ";
1.110     foxr      470: 		    if (defined($lastresponse{$name})) { $result .= 'checked="on"'; }
                    471: 		    $result .= ' />'.$Apache::response::foilgroup{$name.'.text'}.
                    472: 			'</label>';
1.93      albertel  473: 		}
1.83      albertel  474: 		$temp++;
1.110     foxr      475: 		if ($target ne 'tex') {
                    476: 		    if (($direction eq 'horizontal') && ($target ne 'tex')) { $result.="</td>"; }
                    477: 		} else {
                    478: 		    $result.='\vskip 0 mm ';
                    479: 		}
1.83      albertel  480: 	    }
1.45      albertel  481: 	}
                    482:     }
1.120     foxr      483:     
1.110     foxr      484:     if (($direction eq 'horizontal') && ($target ne 'tex')) { $result.='</tr></table>'; }
1.83      albertel  485:     return $result;
1.15      albertel  486: }
                    487: 
1.122     albertel  488: 
1.28      albertel  489: sub whichfoils {
1.83      albertel  490:     my ($max,$randomize)=@_;
1.28      albertel  491: 
1.83      albertel  492:     my @truelist;
                    493:     my @falselist;
                    494:     my @whichfalse =();
                    495:     my ($truecnt,$falsecnt) = &getfoilcounts();
                    496:     my $count=0;
                    497:     # we will add in 1 of the true statements
1.104     albertel  498:     if ( $max>0 && ($falsecnt+1)>$max) { $count=$max } else { $count=$falsecnt+1; $max=$count; }
1.83      albertel  499:     my $answer=int(&Math::Random::random_uniform() * ($count));
                    500:     &Apache::lonxml::debug("Count is $count, $answer is $answer");
                    501:     my @names;
                    502:     if ( $Apache::response::foilgroup{'names'} ) {
                    503: 	@names= @{ $Apache::response::foilgroup{'names'} };
                    504:     }
                    505:     if (&Apache::response::showallfoils()) {
                    506: 	@whichfalse=@names;
                    507:     } elsif ($randomize eq 'no') {
                    508: 	&Apache::lonxml::debug("No randomization");
                    509: 	my $havetrue=0;
                    510: 	foreach my $name (@names) {
                    511: 	    if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
                    512: 		if (!$havetrue ) {
                    513: 		    push(@whichfalse,$name); $havetrue++; $answer=$#whichfalse;
                    514: 		}
                    515: 	    } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
                    516: 		push (@whichfalse,$name);
                    517: 	    } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'unused') {
                    518: 	    } else {
1.87      albertel  519: 		&Apache::lonxml::error(&HTML::Entities::encode("No valid value assigned ($Apache::response::foilgroup{$name.'.value'}) for foil $name in <foilgroup>",'<>&"'));
1.83      albertel  520: 	    }
                    521: 	}
1.97      albertel  522: 	if (!$havetrue && $Apache::lonhomework::type ne 'survey') {
1.134     bisitz    523: 	    &Apache::lonxml::error(&mt('There are no true statements available.').'<br />');
1.97      albertel  524: 	}
1.83      albertel  525:     } else {
                    526: 	my $current=0;
                    527: 	&Apache::lonhomework::showhash(%Apache::response::foilgroup);
                    528: 	my (%top,%bottom);
                    529: 	#first find out where everyone wants to be
                    530: 	foreach my $name (@names) {
                    531: 	    $current++;
                    532: 	    if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
                    533: 		push (@truelist,$name);
                    534: 		if ($Apache::response::foilgroup{$name.'.location'} eq 'top') {
                    535: 		    $top{$name}=$current;
                    536: 		} elsif ($Apache::response::foilgroup{$name.'.location'} eq 'bottom') {
                    537: 		    $bottom{$name}=$current;
                    538: 		}
                    539: 	    } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
                    540: 		push (@falselist,$name);
                    541: 		if ($Apache::response::foilgroup{$name.'.location'} eq 'top') {
                    542: 		    $top{$name}=$current;
                    543: 		} elsif ($Apache::response::foilgroup{$name.'.location'} eq 'bottom') {
                    544: 		    $bottom{$name}=$current;
                    545: 		}
                    546: 	    } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'unused') {
                    547: 	    } else {
1.87      albertel  548: 		&Apache::lonxml::error(&HTML::Entities::encode("No valid value assigned ($Apache::response::foilgroup{$name.'.value'}) for foil $name in <foilgroup>",'<>&"'));
1.83      albertel  549: 	    }
                    550: 	}
                    551: 	#pick a true statement
                    552: 	my $notrue=0;
                    553: 	if (scalar(@truelist) == 0) { $notrue=1; }
                    554: 	my $whichtrue = int(&Math::Random::random_uniform() * ($#truelist+1));
                    555: 	&Apache::lonxml::debug("Max is $max, From $#truelist elms, picking $whichtrue");
                    556: 	my (@toplist, @bottomlist);
                    557: 	my $topcount=0;
                    558: 	my $bottomcount=0;
                    559: 	# assign everyone to either toplist/bottomlist or whichfalse
                    560: 	# which false is randomized, toplist bottomlist are in order
                    561: 	while ((($#whichfalse+$topcount+$bottomcount) < $max-2) && ($#falselist > -1)) {
                    562: 	    &Apache::lonxml::debug("Have $#whichfalse max is $max");
                    563: 	    my $afalse=int(&Math::Random::random_uniform() * ($#falselist+1));
                    564: 	    &Apache::lonxml::debug("From $#falselist elms, picking $afalse");
                    565: 	    $afalse=splice(@falselist,$afalse,1);
                    566: 	    &Apache::lonxml::debug("Picked $afalse");
                    567: 	    &Apache::lonhomework::showhash(('names'=>\@names));
                    568: 	    &Apache::lonhomework::showhash(%top);
                    569: 	    if ($top{$afalse}) {
                    570: 		$toplist[$top{$afalse}]=$afalse;
                    571: 		$topcount++;
                    572: 	    } elsif ($bottom{$afalse}) {
                    573: 		$bottomlist[$bottom{$afalse}]=$afalse;
                    574: 		$bottomcount++;
                    575: 	    } else {
                    576: 		push (@whichfalse,$afalse);
                    577: 	    }
                    578: 	}
                    579: 	&Apache::lonxml::debug("Answer wants $answer");
                    580: 	my $truename=$truelist[$whichtrue];
                    581: 	my $dosplice=1;
                    582: 	if ($notrue && $Apache::lonhomework::type ne 'survey') {
                    583: 	    $dosplice=0;
1.134     bisitz    584: 	    &Apache::lonxml::error(&mt('There are no true statements available.').'<br />');
1.83      albertel  585: 	}
                    586: 	#insert the true statement, keeping track of where it wants to be
                    587: 	if ($Apache::response::foilgroup{$truename.'.location'} eq 'top' && $dosplice) {
                    588: 	    $toplist[$top{$truename}]=$truename;
                    589: 	    $answer=-1;
                    590: 	    foreach my $top (reverse(@toplist)) {
                    591: 		if ($top) { $answer++;}
                    592: 		if ($top eq $truename) { last; }
1.49      albertel  593: 	    }
1.83      albertel  594: 	    $dosplice=0;
                    595: 	} elsif ($Apache::response::foilgroup{$truename.'.location'} eq 'bottom' && $dosplice) {
                    596: 	    $bottomlist[$bottom{$truename}]=$truename;
                    597: 	    $answer=-1;
                    598: 	    foreach my $bot (@bottomlist) {
                    599: 		if ($bot) { $answer++;}
                    600: 		if ($bot eq $truename) { last; }
1.49      albertel  601: 	    }
1.83      albertel  602: 	    $answer+=$topcount+$#whichfalse+1;
                    603: 	    $dosplice=0;
1.49      albertel  604: 	} else {
1.83      albertel  605: 	    if ($topcount>0 || $bottomcount>0) {
                    606: 		$answer = int(&Math::Random::random_uniform() * ($#whichfalse+1))
                    607: 		    + $topcount;
                    608: 	    }
                    609: 	}
                    610: 	&Apache::lonxml::debug("Answer now wants $answer");
                    611: 	#add the top items to the top, bottom items to the bottom
                    612: 	for (my $i=0;$i<=$#toplist;$i++) {
                    613: 	    if ($toplist[$i]) { unshift(@whichfalse,$toplist[$i]) }
1.49      albertel  614: 	}
1.83      albertel  615: 	for (my $i=0;$i<=$#bottomlist;$i++) {
                    616: 	    if ($bottomlist[$i]) { push(@whichfalse,$bottomlist[$i]) }
1.49      albertel  617: 	}
1.83      albertel  618: 	#if the true statement is randomized insert it into the list
                    619: 	if ($dosplice) { splice(@whichfalse,$answer,0,$truelist[$whichtrue]); }
1.49      albertel  620:     }
1.83      albertel  621:     &Apache::lonxml::debug("Answer is $answer");
                    622:     return ($answer,@whichfalse);
1.28      albertel  623: }
                    624: 
                    625: sub displayfoils {
1.123     albertel  626:     my ($target,$answer,$whichfoils,$direction, $bubbles_per_line)=@_;
1.83      albertel  627:     my $result;
1.28      albertel  628: 
1.22      albertel  629:     my $part=$Apache::inputtags::part;
1.83      albertel  630:     my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
                    631:     if ( ($target ne 'tex') &&
                    632: 	 &Apache::response::show_answer() ) {
1.90      albertel  633: 	if ($direction eq 'horizontal') {
                    634: 	    if ($target ne 'tex') {
                    635: 		$result.='<table><tr>';
                    636: 	    }
                    637: 	}
1.123     albertel  638: 	foreach my $name (@{ $whichfoils }) {
1.90      albertel  639: 	    if ($direction eq 'horizontal') {
                    640: 		if ($target ne 'tex') { $result.='<td>'; }
                    641: 	    }
1.83      albertel  642: 	    if ($target ne 'tex') {
                    643: 		$result.="<br />";
                    644: 	    } else {
                    645: 		$result.='\item \vskip -2 mm  ';
                    646: 	    }
                    647: 	    if ($Apache::response::foilgroup{$name.'.value'} eq 'true') { 
1.132     bisitz    648: 		if ($target ne 'tex') {
                    649:                     $result.=&mt('Correct:').'<b>';
                    650:                 } else {
                    651:                     $result.=&mt('Correct:').' \textbf{';
                    652:                 }
1.83      albertel  653: 	    } else {
1.132     bisitz    654: 		$result.=&mt('Incorrect:');
1.83      albertel  655: 	    }
1.94      matthew   656: 	    if ($target eq 'web') { $result.="<label>"; }
1.90      albertel  657: 	    $result.=$Apache::response::foilgroup{$name.'.text'};
1.94      matthew   658: 	    if ($target eq 'web') { $result.="</label>"; }
1.83      albertel  659: 	    if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
                    660: 		if ($target ne 'tex') { $result.='</b>';} else {$result.='}';}
                    661: 	    }
1.90      albertel  662: 	    if ($direction eq 'horizontal') {
                    663: 		if ($target ne 'tex') { $result.='</td>'; }
                    664: 	    }
                    665: 	}
                    666: 	if ($direction eq 'horizontal') {
                    667: 	    if ($target ne 'tex') {
                    668: 		$result.='</tr></table>';
                    669: 	    }
1.83      albertel  670: 	}
                    671:     } else {
                    672: 	my @alphabet = ('A'..'Z');
                    673: 	my $i = 0;
1.116     foxr      674: 	my $bubble_number = 0;
1.124     albertel  675: 	my $line = 0;
1.83      albertel  676: 	my $temp=0;  
                    677: 	my $id=$Apache::inputtags::response['-1'];
                    678: 	my $part=$Apache::inputtags::part;
                    679: 	my $lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"};
                    680: 	my %lastresponse=&Apache::lonnet::str2hash($lastresponse);
1.90      albertel  681: 	if ($target ne 'tex' && $direction eq 'horizontal') {
                    682: 	    $result.="<table><tr>";
                    683: 	}
1.123     albertel  684: 	foreach my $name (@{ $whichfoils }) {
1.83      albertel  685: 	    if ($target ne 'tex') {
1.90      albertel  686: 		if ($direction eq 'horizontal') {
                    687: 		    $result.="<td>"; 
                    688: 		} else { 
                    689: 		    $result.="<br />";
                    690: 		} 
                    691: 	    }
                    692: 	    if ($target ne 'tex') { 
1.94      matthew   693:                 $result.= '<label>';
1.113     albertel  694: 		$result.=
                    695: 		    "<input type=\"radio\"
                    696:                             onchange=\"javascript:setSubmittedPart('$part');\"
                    697:                             name=\"HWVAL_$Apache::inputtags::response['-1']\"
                    698:                             value=\"$temp\" ";
1.83      albertel  699: 		if (defined($lastresponse{$name})) { $result .= 'checked="on"'; }
1.108     albertel  700: 		$result .= ' />'.$Apache::response::foilgroup{$name.'.text'}."</label>";
1.83      albertel  701: 	    } else {
                    702: 		if ($Apache::lonhomework::type eq 'exam') {
1.116     foxr      703: 		    if($bubble_number >= $bubbles_per_line) {
1.124     albertel  704: 			$line++;
1.116     foxr      705: 			$i = 0;
                    706: 			$bubble_number = 0;
1.124     albertel  707: 			$result.='\item[\textbf{'.($Apache::lonxml::counter+$line).'}.]';
1.116     foxr      708: 		    }
1.124     albertel  709: 		    $result .= '{\small \textbf{'.$alphabet[$i].'}}$\bigcirc$'.$Apache::response::foilgroup{$name.'.text'}.'\\\\';  #' stupid emacs
                    710: 		    $i++;
                    711: 		    $bubble_number++;
1.83      albertel  712: 		} else {
1.135     onken     713: 		      if($env{'form.pdfFormFields'} eq 'yes') {
                    714: 
                    715:                          my $fieldname = $env{'request.symb'}.
                    716:                                          '&part_'. $Apache::inputtags::part.
                    717:                                          '&radiobuttonresponse'.
                    718:                                          '&HWVAL_' . $Apache::inputtags::response['-1'];
                    719:                          my $value = $temp;
                    720:                          my $text = $Apache::response::foilgroup{$name.'.text'};
                    721:                          $result .= &Apache::lonxml::print_pdf_radiobutton($fieldname, $value, $text).'\newline'."\n";
                    722:                      } else { 
                    723:                          $result .= '\vspace*{-2 mm}\item '.$Apache::response::foilgroup{$name.'.text'};
                    724:                      }
                    725:                 }
1.83      albertel  726: 	    }
1.90      albertel  727: 	    if ($target ne 'tex' && $direction eq 'horizontal') {
                    728: 		$result.="</td>"; 
                    729: 	    }
1.83      albertel  730: 	    $temp++;
                    731: 	}
1.90      albertel  732: 	if ($target ne 'tex' && $direction eq 'horizontal') {
                    733: 	    $result.="</tr></table>";
                    734: 	}
1.83      albertel  735:     }
1.92      albertel  736:     if ($target ne 'tex') { if ($direction ne 'horizontal') { $result.="<br />";} } else { $result.='\vskip 0 mm '; }
1.83      albertel  737:     return $result;
1.81      albertel  738: }
                    739: 
                    740: sub displayallanswers {
1.106     albertel  741:     my @names;
                    742:     if ( $Apache::response::foilgroup{'names'} ) {
                    743: 	@names= @{ $Apache::response::foilgroup{'names'} };
                    744:     }
1.81      albertel  745:     my $result=&Apache::response::answer_header('radiobuttonresponse');
                    746:     foreach my $name (@names) {
                    747: 	$result.=&Apache::response::answer_part('radiobuttonresponse',
                    748: 				$Apache::response::foilgroup{$name.'.value'});
                    749:     }
                    750:     $result.=&Apache::response::answer_footer('radiobuttonresponse');
                    751:     return $result;
1.14      albertel  752: }
                    753: 
1.28      albertel  754: sub displayanswers {
1.124     albertel  755:     my ($answer, $whichopt, $bubbles_per_line)=@_;
                    756:     my $result;
                    757: 
1.105     albertel  758:     if ($Apache::lonhomework::type eq 'exam') {
1.124     albertel  759: 	my $line = int($answer/$bubbles_per_line);
                    760: 	my $correct = ('A'..'Z')[$answer%$bubbles_per_line];
                    761: 	$result .= &Apache::response::answer_header('radiobuttonresponse',
                    762: 						    $line);
                    763: 	$result .= &Apache::response::answer_part('radiobuttonresponse',
                    764: 						  $correct);
                    765:     } else {
                    766: 	$result .= &Apache::response::answer_header('radiobuttonresponse');
1.105     albertel  767:     }
1.123     albertel  768:     foreach my $name (@{ $whichopt }) {
1.83      albertel  769: 	$result.=&Apache::response::answer_part('radiobuttonresponse',
1.105     albertel  770: 						$Apache::response::foilgroup{$name.'.value'});
                    771:     }
1.83      albertel  772:     $result.=&Apache::response::answer_footer('radiobuttonresponse');
                    773:     return $result;
1.28      albertel  774: }
                    775: 
1.14      albertel  776: sub start_conceptgroup {
1.83      albertel  777:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    778:     $Apache::radiobuttonresponse::conceptgroup=1;
                    779:     %Apache::response::conceptgroup=();
                    780:     my $result;
                    781:     if ($target eq 'edit') {
                    782: 	$result.=&Apache::edit::tag_start($target,$token);
                    783: 	$result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').
                    784: 	    &Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    785:     } elsif ($target eq 'modified') {
                    786: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    787: 						     $safeeval,'concept');
                    788: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                    789:     }
                    790:     return $result;
1.14      albertel  791: }
                    792: 
                    793: sub end_conceptgroup {
1.83      albertel  794:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    795:     $Apache::radiobuttonresponse::conceptgroup=0;
                    796:     my $result;
                    797:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'  ||
                    798: 	$target eq 'tex' || $target eq 'analyze') {
                    799: 	&Apache::response::pick_foil_for_concept($target,
                    800: 						 ['value','text','location'],
                    801: 						 \%Apache::hint::radiobutton,
                    802: 						 $parstack,$safeeval);
                    803:     } elsif ($target eq 'edit') {
                    804: 	$result=&Apache::edit::end_table();
                    805:     }
                    806:     return $result;
1.26      albertel  807: }
                    808: 
                    809: sub insert_conceptgroup {
1.83      albertel  810:     my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
                    811:     return $result;
1.1       albertel  812: }
                    813: 
                    814: sub start_foil {
1.83      albertel  815:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    816:     my $result='';
                    817:     if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
                    818: 	&Apache::lonxml::startredirection;
1.95      albertel  819: 	if ($target eq 'analyze') {
                    820: 	    &Apache::response::check_if_computed($token,$parstack,$safeeval,'value');
                    821: 	}
1.83      albertel  822:     } elsif ($target eq 'edit') {
                    823: 	$result=&Apache::edit::tag_start($target,$token);
                    824: 	$result.=&Apache::edit::text_arg('Name:','name',$token);
                    825: 	$result.=&Apache::edit::select_or_text_arg('Correct Option:','value',
                    826: 						   ['unused','true','false'],
                    827: 						   $token);
                    828: 	my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
                    829: 						 $safeeval,'-3');
                    830: 	if ($randomize ne 'no') {
                    831: 	    $result.=&Apache::edit::select_arg('Location:','location',
                    832: 					       ['random','top','bottom'],$token);
                    833: 	}
                    834: 	$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    835:     } elsif ($target eq 'modified') {
                    836: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    837: 						     $safeeval,'value','name',
                    838: 						     'location');
                    839: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                    840:     } 
                    841:     return $result;
1.1       albertel  842: }
                    843: 
                    844: sub end_foil {
1.83      albertel  845:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    846:     my $text='';
                    847:     if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
                    848: 	$text=&Apache::lonxml::endredirection;
                    849:     }
1.85      albertel  850:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'
                    851: 	|| $target eq 'tex' || $target eq 'analyze') {
1.83      albertel  852: 	my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
                    853: 	if ($value ne 'unused') {
                    854: 	    my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
1.102     albertel  855: 	    if ($name eq "") {
1.134     bisitz    856: 		&Apache::lonxml::warning(&mt('Foils without names exist. This can cause problems to malfunction.'));
1.98      albertel  857: 		$name=$Apache::lonxml::curdepth;
                    858: 	    }
1.85      albertel  859: 	    if (defined($Apache::response::foilnames{$name})) {
1.134     bisitz    860: 		&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  861: 	    }
1.86      albertel  862: 	    $Apache::response::foilnames{$name}++;
1.85      albertel  863: 	    my $location =&Apache::lonxml::get_param('location',$parstack,
                    864: 						     $safeeval);
1.83      albertel  865: 	    if ( $Apache::radiobuttonresponse::conceptgroup
                    866: 		 && !&Apache::response::showallfoils() ) {
                    867: 		push @{ $Apache::response::conceptgroup{'names'} }, $name;
                    868: 		$Apache::response::conceptgroup{"$name.value"} = $value;
                    869: 		$Apache::response::conceptgroup{"$name.text"} = $text;	
                    870: 		$Apache::response::conceptgroup{"$name.location"} = $location;
                    871: 	    } else {
                    872: 		push @{ $Apache::response::foilgroup{'names'} }, $name;
                    873: 		$Apache::response::foilgroup{"$name.value"} = $value;
                    874: 		$Apache::response::foilgroup{"$name.text"} = $text;
                    875: 		$Apache::response::foilgroup{"$name.location"} = $location;
                    876: 	    }
                    877: 	}
1.18      albertel  878:     }
1.83      albertel  879:     return '';
1.1       albertel  880: }
                    881: 
1.27      albertel  882: sub insert_foil {
1.83      albertel  883:     return '
1.27      albertel  884: <foil name="" value="unused">
                    885: <startouttext />
                    886: <endouttext />
                    887: </foil>';
                    888: }
1.1       albertel  889: 1;
                    890: __END__
                    891:  

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