--- loncom/homework/radiobuttonresponse.pm 2001/06/02 03:59:59 1.20
+++ loncom/homework/radiobuttonresponse.pm 2007/08/29 13:40:18 1.127
@@ -1,235 +1,794 @@
# The LearningOnline Network with CAPA
# mutliple choice style responses
-# 2/21 Guy
+#
+# $Id: radiobuttonresponse.pm,v 1.127 2007/08/29 13:40:18 albertel Exp $
+#
+# Copyright Michigan State University Board of Trustees
+#
+# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
+#
+# LON-CAPA is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# LON-CAPA is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with LON-CAPA; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+# /home/httpd/html/adm/gpl.txt
+#
+# http://www.lon-capa.org/
+#
package Apache::radiobuttonresponse;
use strict;
+use HTML::Entities();
+use Apache::lonlocal;
+use Apache::lonnet;
+use Apache::response;
-sub BEGIN {
- &Apache::lonxml::register('Apache::radiobuttonresponse',('radiobuttonresponse'));
+my $default_bubbles_per_line = 10;
+
+
+BEGIN {
+ &Apache::lonxml::register('Apache::radiobuttonresponse',('radiobuttonresponse'));
}
+sub bubble_line_count {
+ my ($numfoils, $bubbles_per_line) = @_;
+ my $bubble_lines;
+ $bubble_lines = int($numfoils / $bubbles_per_line);
+ if (($numfoils % $bubbles_per_line) != 0) {
+ $bubble_lines++;
+ }
+ return $bubble_lines;
+
+}
+
+
sub start_radiobuttonresponse {
- my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
- #when in a radiobutton response use these
- &Apache::lonxml::register('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup'));
- my $id = &Apache::response::start_response($parstack,$safeeval);
- return '';
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result;
+
+ #when in a radiobutton response use these
+ &Apache::lonxml::register('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup'));
+ push (@Apache::lonxml::namespace,'radiobuttonresponse');
+ my $id = &Apache::response::start_response($parstack,$safeeval);
+
+ %Apache::hint::radiobutton=();
+ undef(%Apache::response::foilnames);
+ if ($target eq 'meta') {
+ $result=&Apache::response::meta_package_write('radiobuttonresponse');
+ } elsif ($target eq 'edit' ) {
+ $result.=&Apache::edit::start_table($token).
+ '
 ".&Apache::edit::end_row()
+ .&Apache::edit::start_spanning_row();
+ $result.=
+ &Apache::edit::text_arg('Max Number Of Shown Foils:','max',
+ $token,'4').
+ &Apache::edit::select_arg('Randomize Foil Order','randomize',
+ ['yes','no'],$token).
+ &Apache::edit::select_arg('Display Direction','direction',
+ ['vertical','horizontal'],$token).
+ &Apache::edit::end_row().
+ &Apache::edit::start_spanning_row()."\n";
+ } elsif ($target eq 'modified') {
+ my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+ $safeeval,'max',
+ 'randomize','direction');
+ if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
+ } elsif ($target eq 'tex') {
+ my $type=&Apache::lonxml::get_param('TeXtype',$parstack,$safeeval,
+ undef,0);
+ if ($type eq '1') {
+ $result .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}';
+ } elsif ($type eq 'A') {
+ $result .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}';
+ } elsif ($type eq 'a') {
+ $result .= ' \renewcommand{\labelenumi}{\alph{enumi}.}';
+ } elsif ($type eq 'i') {
+ $result .= ' \renewcommand{\labelenumi}{\roman{enumi}.}';
+ } else {
+ $result .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}';
+ }
+ $result .= '\begin{enumerate}';
+ } elsif ($target eq 'analyze') {
+ my $part_id="$Apache::inputtags::part.$id";
+ push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
+ }
+ return $result;
}
sub end_radiobuttonresponse {
- &Apache::response::end_response;
- return '';
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result;
+ if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
+ if ($target eq 'tex') { $result .= '\end{enumerate}'; }
+ &Apache::response::end_response;
+ pop @Apache::lonxml::namespace;
+ &Apache::lonxml::deregister('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup'));
+ undef(%Apache::response::foilnames);
+ return $result;
}
-%Apache::response::foilgroup={};
+%Apache::response::foilgroup=();
sub start_foilgroup {
- %Apache::response::foilgroup={};
- $Apache::radiobuttonresponse::conceptgroup=0;
- &Apache::response::setrandomnumber();
- return '';
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+ my $result;
+ %Apache::response::foilgroup=();
+ $Apache::radiobuttonresponse::conceptgroup=0;
+ &Apache::response::pushrandomnumber();
+ if ($target eq 'tex' && $Apache::lonhomework::type eq 'exam') {
+ $result.='\item[\textbf{'.$Apache::lonxml::counter.'}.]';
+ }
+ return $result;
}
sub storesurvey {
- if ( defined $ENV{'form.submitted'}) {
- my $response = $ENV{'form.HWVAL'.$Apache::inputtags::response['-1']};
+ if ( !&Apache::response::submitted() ) { return ''; }
+ my $response = $env{'form.HWVAL_'.$Apache::inputtags::response['-1']};
&Apache::lonxml::debug("Here I am!:$response:");
- if ( $response =~ /[^\s]/) {
- my $id = $Apache::inputtags::response['-1'];
- $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.submission"}=$response;
- $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}='SUBMITTED';
- &Apache::lonxml::debug("submitted a $response \n");
+ if ( $response !~ /[0-9]+/) { return ''; }
+ my $part = $Apache::inputtags::part;
+ my $id = $Apache::inputtags::response['-1'];
+ my @whichfoils=@{ $Apache::response::foilgroup{'names'} };
+ my %responsehash;
+ $responsehash{$whichfoils[$response]}=$response;
+ my $responsestr=&Apache::lonnet::hash2str(%responsehash);
+ $Apache::lonhomework::results{"resource.$part.$id.submission"}=
+ $responsestr;
+ my %previous=&Apache::response::check_for_previous($responsestr,$part,$id);
+ my $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED';
+ &Apache::response::handle_previous(\%previous,$ad);
+ &Apache::lonxml::debug("submitted a $response \n");
+ return '';
+}
+
+
+sub grade_response {
+ my ($answer, $whichfoils, $bubbles_per_line)=@_;
+
+ if ( !&Apache::response::submitted() ) { return; }
+ my $response;
+
+ if ($env{'form.submitted'} eq 'scantron') {
+ $response = &Apache::response::getresponse(1,undef,
+ &bubble_line_count(scalar(@{ $whichfoils}),
+ $bubbles_per_line),
+ $bubbles_per_line);
+
+ } else {
+ $response = $env{'form.HWVAL_'.$Apache::inputtags::response['-1']};
}
- }
- return '';
+
+
+ if ( $response !~ /[0-9]+/) { return; }
+ my $part=$Apache::inputtags::part;
+ my $id = $Apache::inputtags::response['-1'];
+ my %responsehash;
+ $responsehash{$whichfoils->[$response]}=$response;
+ my $responsestr=&Apache::lonnet::hash2str(%responsehash);
+ my %previous=&Apache::response::check_for_previous($responsestr,
+ $part,$id);
+ $Apache::lonhomework::results{"resource.$part.$id.submission"}=
+ $responsestr;
+ &Apache::lonxml::debug("submitted a $response \n");
+ my $ad;
+ if ($response == $answer) {
+ $ad='EXACT_ANS';
+ } else {
+ $ad='INCORRECT';
+ }
+ $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
+ &Apache::response::handle_previous(\%previous,$ad);
}
sub end_foilgroup {
- my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
-
- my $result;
- if ($target ne 'meta') {
- my $style = &Apache::lonxml::get_param('style',$parstack,$safeeval,'-2');
- if ( $style eq 'survey' ) {
- if ($target eq 'web') {
- $result=&displayallfoils();
- } elsif ( $target eq 'grade' ) {
- $result=&storesurvey();
- }
- } else {
- my $name;
- my ($truecnt,$falsecnt,$max) = &getfoilcounts($parstack,$safeeval);
- my $count=0;
- # we will add in 1 of the true statements
- if (($falsecnt+1)>$max) { $count=$max } else { $count=$falsecnt+1; }
- my $answer = int(rand ($count));
- &Apache::lonxml::debug("Answer is $answer, $count from $max, $falsecnt");
- if ($target eq 'web') {
- $result=&displayfoils($max,$answer);
- } elsif ( $target eq 'grade') {
- if ( defined $ENV{'form.submitted'}) {
- my $response = $ENV{'form.HWVAL'.$Apache::inputtags::response['-1']};
- if ( $response =~ /[^\s]/) {
- my $id = $Apache::inputtags::response['-1'];
- $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.submission"}=$response;
- &Apache::lonxml::debug("submitted a $response \n");
- if ($response == $answer) {
- $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}='EXACT_ANS';
- } else {
- $Apache::lonhomework::results{"resource.$Apache::inputtags::part.$id.awarddetail"}='INCORRECT';
+ my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+
+ my $result;
+ my $bubble_lines;
+ my $bubbles_per_line;
+ my $answer_count;
+ my $id = $Apache::inputtags::response['-1'];
+ $bubbles_per_line =
+ &Apache::response::get_response_param($Apache::inputtags::part."_$id",
+ 'numbubbles',
+ $default_bubbles_per_line);
+
+
+ if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
+ $target eq 'tex' || $target eq 'analyze') {
+ my $style = $Apache::lonhomework::type;
+ my $direction = &Apache::lonxml::get_param('direction',$parstack,
+ $safeeval,'-2');
+ if ( $style eq 'survey' && $target ne 'analyze') {
+ if ($target eq 'web' || $target eq 'tex') {
+ $result=&displayallfoils($direction, $target);
+ } elsif ( $target eq 'answer' ) {
+ $result=&displayallanswers();
+ } elsif ( $target eq 'grade' ) {
+ $result=&storesurvey();
+ }
+ $answer_count = scalar(@{$Apache::response::foilgroup{'names'}});
+
+ } else {
+
+ my $name;
+ my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,
+ '-2');
+ my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
+ $safeeval,'-2');
+ my ($answer, @shown) = &whichfoils($max, $randomize);
+ $answer_count = scalar(@shown);
+
+ if ($target eq 'web' || $target eq 'tex') {
+ $result=&displayfoils($target,
+ $answer, \@shown,
+ $direction,
+ $bubbles_per_line);
+ } elsif ($target eq 'answer' ) {
+ $result=&displayanswers($answer, \@shown, $bubbles_per_line);
+ } elsif ( $target eq 'grade') {
+ &grade_response($answer, \@shown, $bubbles_per_line);
+ } elsif ( $target eq 'analyze') {
+ my $bubble_lines = &bubble_line_count($answer_count,
+ $bubbles_per_line);
+ &Apache::response::analyze_store_foilgroup(\@shown,
+ ['text','value','location']);
+ my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
+ push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },
+ ('true','false'));
+ push (@{ $Apache::lonhomework::analyze{"$part_id.bubble_lines"} },
+ $bubble_lines);
}
- }
}
- }
+ $Apache::lonxml::post_evaluate=0;
+ }
+ if ($target eq 'web') {
+ &Apache::response::setup_prior_tries_hash(\&format_prior_answer,
+ [\%Apache::response::foilgroup]);
}
- }
- return $result;
+ $bubble_lines = &bubble_line_count($answer_count, $bubbles_per_line);
+ &Apache::response::poprandomnumber();
+ &Apache::lonxml::increment_counter($bubble_lines);
+ return $result;
}
sub getfoilcounts {
- my ($parstack,$safeeval)=@_;
- my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
- my @names = @{ $Apache::response::foilgroup{'names'} };
- my $truecnt=0;
- my $falsecnt=0;
- my $name;
-
- foreach $name (@names) {
- if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
- $truecnt++;
- } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
- $falsecnt++;
+ my @names;
+ my $truecnt=0;
+ my $falsecnt=0;
+ my $name;
+ if ( $Apache::response::foilgroup{'names'} ) {
+ @names= @{ $Apache::response::foilgroup{'names'} };
+ }
+ foreach $name (@names) {
+ if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
+ $truecnt++;
+ } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
+ $falsecnt++;
+ }
}
- }
- return ($truecnt,$falsecnt,$max);
+ return ($truecnt,$falsecnt);
}
-sub displayallfoils {
- my $result;
- &Apache::lonxml::debug("survey style display");
- my @names = @{ $Apache::response::foilgroup{'names'} };
- my $temp=0;
- my $id=$Apache::inputtags::response['-1'];
- my $part=$Apache::inputtags::part;
- my $lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"};
- foreach my $name (@names) {
- if ($Apache::response::foilgroup{$name.'.value'} ne 'unused') {
- $result.=" \n";
- $temp++;
- }
- }
- return $result;
+sub format_prior_answer {
+ my ($mode,$answer,$other_data) = @_;
+ my $foil_data = $other_data->[0];
+ my %response = &Apache::lonnet::str2hash($answer);
+ my ($name) = keys(%response);
+ return ''.
+ $foil_data->{$name.'.text'}.'';
+
}
-sub displayfoils {
- my ($max,$answer)=@_;
- my @names = @{ $Apache::response::foilgroup{'names'} };
- my @truelist;
- my @falselist;
- my $result;
- my $name;
-
- foreach $name (@names) {
- #result.=" $name is $Apache::response::foilgroup{$name.'.value'} ";
- if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
- push (@truelist,$name);
- } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
- push (@falselist,$name);
- } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'unused') {
- } else {
- &Apache::lonxml::error("Unknown state $Apache::response::foilgroup{$name.'.value'} for $name in ");
- }
- }
- my $whichtrue = int(rand($#truelist+1));
- &Apache::lonxml::debug("Max is $max, From $#truelist elms, picking $whichtrue");
- my @whichfalse =();
- while ((($#whichfalse+1) < $max) && ($#falselist > -1)) {
- &Apache::lonxml::debug("Have $#whichfalse max is $max");
- my $afalse=int(rand($#falselist+1));
- &Apache::lonxml::debug("From $#falselist elms, picking $afalse");
- $afalse=splice(@falselist,$afalse,1);
- &Apache::lonxml::debug("Picked $afalse");
- push (@whichfalse,$afalse);
- }
- splice(@whichfalse,$answer,0,$truelist[$whichtrue]);
- &Apache::lonxml::debug("the true statement is $answer");
- if ($Apache::lonhomework::history{"resource.$Apache::inputtags::part.solved"} =~ /^correct/ ) {
- foreach $name (@whichfalse) {
- $result.=" ";
- if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
- $result.='Correct';
- } else {
- $result.='Incorrect';
- }
- $result.=":".$Apache::response::foilgroup{$name.'.text'}."\n";
+sub displayallfoils {
+ my ($direction, $target)=@_;
+ my $result;
+ &Apache::lonxml::debug("survey style display");
+ my @names;
+ if ( $Apache::response::foilgroup{'names'} ) {
+ @names= @{ $Apache::response::foilgroup{'names'} };
}
- } else {
+
my $temp=0;
+ my $i =0;
my $id=$Apache::inputtags::response['-1'];
my $part=$Apache::inputtags::part;
- my $lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"};
- foreach $name (@whichfalse) {
- $result.=" \n";
- $temp++;
+ my $lastresponse=
+ $Apache::lonhomework::history{"resource.$part.$id.submission"};
+ if ($direction eq 'horizontal') { $result.='
'; }
+ my %lastresponse=&Apache::lonnet::str2hash($lastresponse);
+ if (&Apache::response::show_answer() ) {
+ foreach my $name (@names) {
+ if ($Apache::response::foilgroup{$name.'.value'} ne 'unused') {
+ if (($direction eq 'horizontal') && ($target ne 'tex')) {
+ $result.="
'; }
+ return $result;
+}
+
+=pod
+
+=item &whichfoils($max,$randomize)
+
+Randomizes the list of foils.
+Respects
+ - each foils desire to be randomized
+ - the existance of Concept groups of foils (select 1 foil from each)
+ - and selects a single correct statement from all possilble true statments
+ - and limits it to a toal of $max foils
+
+WARNING: this routine uses the random number generator, it should only
+be called once per target, otherwise it can cause randomness changes in
+homework problems.
+
+Arguments
+ $max - maximum number of foils to select (including the true one)
+ (so a max of 5 is: 1 true, 4 false)
+
+ $randomize - whether to randomize the listing of foils, by default
+ will randomize, only if randomize is 'no' will it not
+
+Returns
+ $answer - location in the array of the correct answer
+ @foils - array of foil names in to display order
+
+=cut
+
+sub whichfoils {
+ my ($max,$randomize)=@_;
+
+ my @truelist;
+ my @falselist;
+ my @whichfalse =();
+ my ($truecnt,$falsecnt) = &getfoilcounts();
+ my $count=0;
+ # we will add in 1 of the true statements
+ if ( $max>0 && ($falsecnt+1)>$max) { $count=$max } else { $count=$falsecnt+1; $max=$count; }
+ my $answer=int(&Math::Random::random_uniform() * ($count));
+ &Apache::lonxml::debug("Count is $count, $answer is $answer");
+ my @names;
+ if ( $Apache::response::foilgroup{'names'} ) {
+ @names= @{ $Apache::response::foilgroup{'names'} };
}
- }
- return $result." ";
+ if (&Apache::response::showallfoils()) {
+ @whichfalse=@names;
+ } elsif ($randomize eq 'no') {
+ &Apache::lonxml::debug("No randomization");
+ my $havetrue=0;
+ foreach my $name (@names) {
+ if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
+ if (!$havetrue ) {
+ push(@whichfalse,$name); $havetrue++; $answer=$#whichfalse;
+ }
+ } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
+ push (@whichfalse,$name);
+ } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'unused') {
+ } else {
+ &Apache::lonxml::error(&HTML::Entities::encode("No valid value assigned ($Apache::response::foilgroup{$name.'.value'}) for foil $name in ",'<>&"'));
+ }
+ }
+ if (!$havetrue && $Apache::lonhomework::type ne 'survey') {
+ &Apache::lonxml::error("There are no true statements available. ");
+ }
+ } else {
+ my $current=0;
+ &Apache::lonhomework::showhash(%Apache::response::foilgroup);
+ my (%top,%bottom);
+ #first find out where everyone wants to be
+ foreach my $name (@names) {
+ $current++;
+ if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
+ push (@truelist,$name);
+ if ($Apache::response::foilgroup{$name.'.location'} eq 'top') {
+ $top{$name}=$current;
+ } elsif ($Apache::response::foilgroup{$name.'.location'} eq 'bottom') {
+ $bottom{$name}=$current;
+ }
+ } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
+ push (@falselist,$name);
+ if ($Apache::response::foilgroup{$name.'.location'} eq 'top') {
+ $top{$name}=$current;
+ } elsif ($Apache::response::foilgroup{$name.'.location'} eq 'bottom') {
+ $bottom{$name}=$current;
+ }
+ } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'unused') {
+ } else {
+ &Apache::lonxml::error(&HTML::Entities::encode("No valid value assigned ($Apache::response::foilgroup{$name.'.value'}) for foil $name in ",'<>&"'));
+ }
+ }
+ #pick a true statement
+ my $notrue=0;
+ if (scalar(@truelist) == 0) { $notrue=1; }
+ my $whichtrue = int(&Math::Random::random_uniform() * ($#truelist+1));
+ &Apache::lonxml::debug("Max is $max, From $#truelist elms, picking $whichtrue");
+ my (@toplist, @bottomlist);
+ my $topcount=0;
+ my $bottomcount=0;
+ # assign everyone to either toplist/bottomlist or whichfalse
+ # which false is randomized, toplist bottomlist are in order
+ while ((($#whichfalse+$topcount+$bottomcount) < $max-2) && ($#falselist > -1)) {
+ &Apache::lonxml::debug("Have $#whichfalse max is $max");
+ my $afalse=int(&Math::Random::random_uniform() * ($#falselist+1));
+ &Apache::lonxml::debug("From $#falselist elms, picking $afalse");
+ $afalse=splice(@falselist,$afalse,1);
+ &Apache::lonxml::debug("Picked $afalse");
+ &Apache::lonhomework::showhash(('names'=>\@names));
+ &Apache::lonhomework::showhash(%top);
+ if ($top{$afalse}) {
+ $toplist[$top{$afalse}]=$afalse;
+ $topcount++;
+ } elsif ($bottom{$afalse}) {
+ $bottomlist[$bottom{$afalse}]=$afalse;
+ $bottomcount++;
+ } else {
+ push (@whichfalse,$afalse);
+ }
+ }
+ &Apache::lonxml::debug("Answer wants $answer");
+ my $truename=$truelist[$whichtrue];
+ my $dosplice=1;
+ if ($notrue && $Apache::lonhomework::type ne 'survey') {
+ $dosplice=0;
+ &Apache::lonxml::error("There are no true statements available. ");
+ }
+ #insert the true statement, keeping track of where it wants to be
+ if ($Apache::response::foilgroup{$truename.'.location'} eq 'top' && $dosplice) {
+ $toplist[$top{$truename}]=$truename;
+ $answer=-1;
+ foreach my $top (reverse(@toplist)) {
+ if ($top) { $answer++;}
+ if ($top eq $truename) { last; }
+ }
+ $dosplice=0;
+ } elsif ($Apache::response::foilgroup{$truename.'.location'} eq 'bottom' && $dosplice) {
+ $bottomlist[$bottom{$truename}]=$truename;
+ $answer=-1;
+ foreach my $bot (@bottomlist) {
+ if ($bot) { $answer++;}
+ if ($bot eq $truename) { last; }
+ }
+ $answer+=$topcount+$#whichfalse+1;
+ $dosplice=0;
+ } else {
+ if ($topcount>0 || $bottomcount>0) {
+ $answer = int(&Math::Random::random_uniform() * ($#whichfalse+1))
+ + $topcount;
+ }
+ }
+ &Apache::lonxml::debug("Answer now wants $answer");
+ #add the top items to the top, bottom items to the bottom
+ for (my $i=0;$i<=$#toplist;$i++) {
+ if ($toplist[$i]) { unshift(@whichfalse,$toplist[$i]) }
+ }
+ for (my $i=0;$i<=$#bottomlist;$i++) {
+ if ($bottomlist[$i]) { push(@whichfalse,$bottomlist[$i]) }
+ }
+ #if the true statement is randomized insert it into the list
+ if ($dosplice) { splice(@whichfalse,$answer,0,$truelist[$whichtrue]); }
+ }
+ &Apache::lonxml::debug("Answer is $answer");
+ return ($answer,@whichfalse);
+}
+
+sub displayfoils {
+ my ($target,$answer,$whichfoils,$direction, $bubbles_per_line)=@_;
+ my $result;
+
+ my $part=$Apache::inputtags::part;
+ my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
+ if ( ($target ne 'tex') &&
+ &Apache::response::show_answer() ) {
+ if ($direction eq 'horizontal') {
+ if ($target ne 'tex') {
+ $result.='
';
+ }
+ }
+ foreach my $name (@{ $whichfoils }) {
+ if ($direction eq 'horizontal') {
+ if ($target ne 'tex') { $result.='
'; }
+ }
+ if ($target ne 'tex') {
+ $result.=" ";
+ } else {
+ $result.='\item \vskip -2 mm ';
+ }
+ if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
+ if ($target ne 'tex') { $result.='Correct:'; } else { $result.='Correct: \textbf{';}
+ } else {
+ $result.='Incorrect:';
+ }
+ if ($target eq 'web') { $result.=""; }
+ if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
+ if ($target ne 'tex') { $result.='';} else {$result.='}';}
+ }
+ if ($direction eq 'horizontal') {
+ if ($target ne 'tex') { $result.='
'; }
+ }
+ }
+ if ($direction eq 'horizontal') {
+ if ($target ne 'tex') {
+ $result.='
';
+ }
+ }
+ } else {
+ my @alphabet = ('A'..'Z');
+ my $i = 0;
+ my $bubble_number = 0;
+ my $line = 0;
+ my $temp=0;
+ my $id=$Apache::inputtags::response['-1'];
+ my $part=$Apache::inputtags::part;
+ my $lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"};
+ my %lastresponse=&Apache::lonnet::str2hash($lastresponse);
+ if ($target ne 'tex' && $direction eq 'horizontal') {
+ $result.="
";
+ }
+ foreach my $name (@{ $whichfoils }) {
+ if ($target ne 'tex') {
+ if ($direction eq 'horizontal') {
+ $result.="