# The LearningOnline Network with CAPA
# mutliple choice style responses
#
# $Id: radiobuttonresponse.pm,v 1.153 2012/01/05 11:56:34 foxr 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;
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 ) =
@_;
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::lonxml::description($token)
. &Apache::loncommon::help_open_topic('Radio_Response_Problems')
. ' '
. ''
. &mt('Delete?') . ' '
. &Apache::edit::deletelist( $target, $token )
. ' '
. ' '
. &Apache::edit::end_row()
. &Apache::edit::start_spanning_row();
$result .= &Apache::edit::text_arg( 'Max Number Of Shown Foils:',
'max', $token, '4' )
. ' ' x 3
. &Apache::edit::select_arg( 'Randomize Foil Order:',
'randomize', [ 'yes', 'no' ], $token )
. ' ' x 3
. &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}.}';
}
if ( $env{'form.pdfFormFields'} eq 'yes'
&& $Apache::inputtags::status[-1] eq 'CAN_ANSWER' )
{
$result .= '\begin{itemize}';
}
else {
$result .= '\begin{enumerate}';
}
}
elsif ( $target eq 'analyze' ) {
my $part_id = "$Apache::inputtags::part.$id";
$Apache::lonhomework::analyze{"$part_id.type"} = 'radiobuttonresponse';
push( @{ $Apache::lonhomework::analyze{"parts"} }, $part_id );
}
return $result;
}
sub end_radiobuttonresponse {
my ( $target, $token, $tagstack, $parstack, $parser, $safeeval, $style ) =
@_;
my $result;
if ( $target eq 'edit' ) { $result = &Apache::edit::end_table(); }
if ( $target eq 'tex' ) {
if ( $env{'form.pdfFormFields'} eq 'yes'
and $Apache::inputtags::status[-1] eq 'CAN_ANSWER' )
{
$result .= '\end{itemize}';
}
else {
$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 = ();
sub start_foilgroup {
my ( $target, $token, $tagstack, $parstack, $parser, $safeeval, $style ) =
@_;
%Apache::response::foilgroup = ();
$Apache::radiobuttonresponse::conceptgroup = 0;
&Apache::response::pushrandomnumber( undef, $target );
return;
}
sub storesurvey {
my ($style) = @_;
if ( !&Apache::response::submitted() ) { return ''; }
my $response = $env{ 'form.HWVAL_' . $Apache::inputtags::response['-1'] };
&Apache::lonxml::debug("Here I am!:$response:");
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;
if ( $style eq 'anonsurvey' ) {
$ad = $Apache::lonhomework::results{"resource.$part.$id.awarddetail"} =
'ANONYMOUS';
}
elsif ( $style eq 'anonsurveycred' ) {
$ad = $Apache::lonhomework::results{"resource.$part.$id.awarddetail"} =
'ANONYMOUS_CREDIT';
}
elsif ( $style eq 'surveycred' ) {
$ad = $Apache::lonhomework::results{"resource.$part.$id.awarddetail"} =
'SUBMITTED_CREDIT';
}
else {
$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'] };
}
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;
my $bubble_lines;
my $answer_count;
my $id = $Apache::inputtags::response['-1'];
my $part = $Apache::inputtags::part;
my $bubbles_per_line = &getbubblesnum( $part, $id );
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' )
|| ( $style eq 'surveycred' )
|| ( $style eq 'anonsurvey' )
|| ( $style eq 'anonsurveycred' )
)
&& ( $target ne 'analyze' )
)
{
if ( $target eq 'web' || $target eq 'tex' ) {
$result = &displayallfoils( $direction, $target );
}
elsif ( $target eq 'answer' ) {
$result = &displayallanswers();
}
elsif ( $target eq 'grade' ) {
$result = &storesurvey($style);
}
$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 $part_id = "$part.$id";
push(
@{ $Apache::lonhomework::analyze{"$part_id.options"} },
( 'true', 'false' )
);
}
}
$Apache::lonxml::post_evaluate = 0;
}
if ( $target eq 'web' ) {
&Apache::response::setup_prior_tries_hash( \&format_prior_answer,
[ \%Apache::response::foilgroup ] );
}
&Apache::response::poprandomnumber();
$bubble_lines = &bubble_line_count( $answer_count, $bubbles_per_line );
&Apache::lonxml::increment_counter( $bubble_lines, "$part.$id" );
if ( $target eq 'analyze' ) {
&Apache::lonhomework::set_bubble_lines();
}
return $result;
}
sub getbubblesnum {
my ( $part, $id ) = @_;
my $bubbles_per_line;
my $default_numbubbles = $default_bubbles_per_line;
if ( ( $env{'form.bubbles_per_row'} =~ /^\d+$/ )
&& ( $env{'form.bubbles_per_row'} > 0 ) )
{
$default_numbubbles = $env{'form.bubbles_per_row'};
}
$bubbles_per_line = &Apache::response::get_response_param( $part . "_$id",
'numbubbles', $default_numbubbles );
return $bubbles_per_line;
}
sub getfoilcounts {
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 );
}
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 displayallfoils {
my ( $direction, $target ) = @_;
my $result;
&Apache::lonxml::debug("survey style display");
my @names;
if ( $Apache::response::foilgroup{'names'} ) {
@names = @{ $Apache::response::foilgroup{'names'} };
}
my $temp = 0;
my $i = 0;
my $id = $Apache::inputtags::response['-1'];
my $part = $Apache::inputtags::part;
my ( $lastresponse, $newvariation, $showanswer );
if (
(
(
$Apache::lonhomework::history{"resource.$part.type"} eq
'randomizetry'
)
|| ( $Apache::lonhomework::type eq 'randomizetry' )
)
&& ( $Apache::inputtags::status[-1] eq 'CAN_ANSWER' )
)
{
if ( $env{ 'form.' . $part . '.rndseed' } ne
$Apache::lonhomework::history{"resource.$part.rndseed"} )
{
$newvariation = 1;
}
}
$showanswer = &Apache::response::show_answer();
unless (
(
(
$Apache::lonhomework::history{"resource.$part.type"} eq
'anonsurvey'
)
|| ( $Apache::lonhomework::history{"resource.$part.type"} eq
'anonsurveycred' )
)
&& ( defined( $env{'form.grade_symb'} ) )
|| ( $newvariation && !$showanswer )
)
{
$lastresponse =
$Apache::lonhomework::history{"resource.$part.$id.submission"};
}
if ( $direction eq 'horizontal' ) { $result .= '';
}
return $result;
}
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'} };
}
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::lonhomework::type ne 'surveycred' )
&& ( $Apache::lonhomework::type ne 'anonsurvey' )
&& ( $Apache::lonhomework::type ne 'anonsurveycred' ) )
{
&Apache::lonxml::error(
&mt('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' )
&& ( $Apache::lonhomework::type ne 'surveycred' )
&& ( $Apache::lonhomework::type ne 'anonsurvey' )
&& ( $Apache::lonhomework::type ne 'anonsurveycred' ) )
{
$dosplice = 0;
&Apache::lonxml::error(
&mt('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 ) {
my $inc = 1;
if ( ( $bottomcount > 0 )
&& ( $Apache::lonhomework::type ne 'exam' ) )
{
$inc = 2;
}
$answer = int(
&Math::Random::random_uniform() * ( $#whichfalse + $inc ) )
+ $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 .= &mt('Correct:') . '';
}
else {
$result .= &mt('Correct:') . ' \textbf{';
}
}
else {
$result .= &mt('Incorrect:');
}
if ( $target eq 'web' ) { $result .= ""; }
$result .= $Apache::response::foilgroup{ $name . '.text' };
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, $newvariation );
if (
(
(
$Apache::lonhomework::history{"resource.$part.type"} eq
'randomizetry'
)
|| ( $Apache::lonhomework::type eq 'randomizetry' )
)
&& ( $Apache::inputtags::status[-1] eq 'CAN_ANSWER' )
)
{
if ( $env{ 'form.' . $part . '.rndseed' } ne
$Apache::lonhomework::history{"resource.$part.rndseed"} )
{
$newvariation = 1;
}
}
unless ($newvariation) {
$lastresponse =
$Apache::lonhomework::history{"resource.$part.$id.submission"};
}
my %lastresponse = &Apache::lonnet::str2hash($lastresponse);
if ( $target ne 'tex' && $direction eq 'horizontal' ) {
$result .= "";
}
}
if ( $target ne 'tex' ) {
if ( $direction ne 'horizontal' ) { $result .= " "; }
}
else { $result .= '\vskip 0 mm '; }
return $result;
}
sub displayallanswers {
my @names;
if ( $Apache::response::foilgroup{'names'} ) {
@names = @{ $Apache::response::foilgroup{'names'} };
}
my $result = &Apache::response::answer_header('radiobuttonresponse');
foreach my $name (@names) {
$result .=
&Apache::response::answer_part( 'radiobuttonresponse',
$Apache::response::foilgroup{ $name . '.value' } );
}
$result .= &Apache::response::answer_footer('radiobuttonresponse');
return $result;
}
sub displayanswers {
my ( $answer, $whichopt, $bubbles_per_line ) = @_;
my $result;
if ( $Apache::lonhomework::type eq 'exam' ) {
my $line = int( $answer / $bubbles_per_line );
my $correct = ( 'A' .. 'Z' )[ $answer % $bubbles_per_line ];
$result .=
&Apache::response::answer_header( 'radiobuttonresponse', $line );
$result .=
&Apache::response::answer_part( 'radiobuttonresponse', $correct );
}
else {
$result .= &Apache::response::answer_header('radiobuttonresponse');
}
foreach my $name ( @{$whichopt} ) {
$result .=
&Apache::response::answer_part( 'radiobuttonresponse',
$Apache::response::foilgroup{ $name . '.value' } );
}
$result .= &Apache::response::answer_footer('radiobuttonresponse');
return $result;
}
sub start_conceptgroup {
my ( $target, $token, $tagstack, $parstack, $parser, $safeeval, $style ) =
@_;
$Apache::radiobuttonresponse::conceptgroup = 1;
%Apache::response::conceptgroup = ();
my $result;
if ( $target eq 'edit' ) {
$result .= &Apache::edit::tag_start( $target, $token );
$result .=
&Apache::edit::text_arg( 'Concept:', 'concept', $token, '50' )
. &Apache::edit::end_row()
. &Apache::edit::start_spanning_row();
}
elsif ( $target eq 'modified' ) {
my $constructtag =
&Apache::edit::get_new_args( $token, $parstack, $safeeval,
'concept' );
if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
}
return $result;
}
sub end_conceptgroup {
my ( $target, $token, $tagstack, $parstack, $parser, $safeeval, $style ) =
@_;
$Apache::radiobuttonresponse::conceptgroup = 0;
my $result;
if ( $target eq 'web'
|| $target eq 'grade'
|| $target eq 'answer'
|| $target eq 'tex'
|| $target eq 'analyze' )
{
&Apache::response::pick_foil_for_concept( $target,
[ 'value', 'text', 'location' ],
\%Apache::hint::radiobutton, $parstack, $safeeval );
}
elsif ( $target eq 'edit' ) {
$result = &Apache::edit::end_table();
}
return $result;
}
sub insert_conceptgroup {
my $result =
"\n\t\t"
. &insert_foil()
. "\n\t\t \n";
return $result;
}
sub start_foil {
my ( $target, $token, $tagstack, $parstack, $parser, $safeeval, $style ) =
@_;
my $result = '';
if ( $target eq 'web' || $target eq 'tex' || $target eq 'analyze' ) {
&Apache::lonxml::startredirection;
if ( $target eq 'analyze' ) {
&Apache::response::check_if_computed( $token, $parstack, $safeeval,
'value' );
}
}
elsif ( $target eq 'edit' ) {
$result = &Apache::edit::tag_start( $target, $token );
$result .= &Apache::edit::text_arg( 'Name:', 'name', $token );
$result .= &Apache::edit::select_or_text_arg(
'Correct Option:', 'value',
[ 'unused', 'true', 'false' ], $token
);
my $randomize =
&Apache::lonxml::get_param( 'randomize', $parstack, $safeeval, '-3' );
if ( $randomize ne 'no' ) {
$result .=
&Apache::edit::select_arg( 'Location:', 'location',
[ 'random', 'top', 'bottom' ], $token );
}
$result .=
&Apache::edit::end_row() . &Apache::edit::start_spanning_row();
}
elsif ( $target eq 'modified' ) {
my $constructtag =
&Apache::edit::get_new_args( $token, $parstack, $safeeval, 'value',
'name', 'location' );
if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
}
return $result;
}
sub end_foil {
my ( $target, $token, $tagstack, $parstack, $parser, $safeeval, $style ) =
@_;
my $text = '';
if ( $target eq 'web' || $target eq 'tex' || $target eq 'analyze' ) {
$text = &Apache::lonxml::endredirection;
}
if ( $target eq 'web'
|| $target eq 'grade'
|| $target eq 'answer'
|| $target eq 'tex'
|| $target eq 'analyze' )
{
my $value = &Apache::lonxml::get_param( 'value', $parstack, $safeeval );
if ( $value ne 'unused' ) {
my $name =
&Apache::lonxml::get_param( 'name', $parstack, $safeeval );
if ( $name eq "" ) {
&Apache::lonxml::warning(
&mt(
'Foils without names exist. This can cause problems to malfunction.'
)
);
$name = $Apache::lonxml::curdepth;
}
if ( defined( $Apache::response::foilnames{$name} ) ) {
&Apache::lonxml::error(
&mt(
'Foil name [_1] appears more than once. Foil names need to be unique.',
'' . $name . ' '
)
);
}
$Apache::response::foilnames{$name}++;
my $location =
&Apache::lonxml::get_param( 'location', $parstack, $safeeval );
if ( $Apache::radiobuttonresponse::conceptgroup
&& !&Apache::response::showallfoils() )
{
push @{ $Apache::response::conceptgroup{'names'} }, $name;
$Apache::response::conceptgroup{"$name.value"} = $value;
$Apache::response::conceptgroup{"$name.text"} = $text;
$Apache::response::conceptgroup{"$name.location"} = $location;
}
else {
push @{ $Apache::response::foilgroup{'names'} }, $name;
$Apache::response::foilgroup{"$name.value"} = $value;
$Apache::response::foilgroup{"$name.text"} = $text;
$Apache::response::foilgroup{"$name.location"} = $location;
}
}
}
return '';
}
sub insert_foil {
return '
';
}
1;
__END__
=head1 NAME
Apache::radiobuttonresponse
=head1 SYNOPSIS
Handles multiple-choice style responses.
This is part of the LearningOnline Network with CAPA project
described at http://www.lon-capa.org.
=head1 SUBROUTINES
=over
=item start_radiobuttonresponse()
=item bubble_line_count()
=item end_radiobuttonresponse()
=item start_foilgroup()
=item storesurvey()
=item grade_response()
=item end_foilgroup()
=item getfoilcounts()
=item format_prior_answer()
=item displayallfoils()
=item &whichfoils($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
=item displayfoils()
=item displayallanswers()
=item displayanswers()
=item start_conceptgroup()
=item end_conceptgroup()
=item insert_conceptgroup()
=item start_foil()
=item end_foil()
=item insert_foil()
=back
=cut