File:
[LON-CAPA] /
loncom /
homework /
hint.pm
Revision
1.68:
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Wed May 23 22:36:21 2007 UTC (17 years, 3 months ago) by
albertel
Branches:
MAIN
CVS tags:
version_2_7_0,
version_2_6_X,
version_2_6_99_1,
version_2_6_99_0,
version_2_6_3,
version_2_6_2,
version_2_6_1,
version_2_6_0,
version_2_5_X,
version_2_5_99_1,
version_2_5_99_0,
version_2_5_2,
version_2_5_1,
version_2_5_0,
version_2_4_X,
version_2_4_99_0,
version_2_4_2,
version_2_4_1,
version_2_4_0,
HEAD
- lonxml takes care of all insertions now, and thus the tags that were attempting to handle it themselves could cause double insertions so elimnate external insertion calls
# The LearningOnline Network with CAPA
# implements the tags that control the hints
#
# $Id: hint.pm,v 1.68 2007/05/23 22:36:21 albertel Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA me&aree 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::hinttags;
use strict;
use Apache::lonnet();
use capa;
use Apache::caparesponse();
use Apache::lonmaxima();
use Apache::response();
use Apache::lonlocal;
use Storable qw(dclone);
BEGIN {
&Apache::lonxml::register('Apache::hinttags',('hintgroup','hintpart','numericalhint','stringhint','formulahint','optionhint','radiobuttonhint','mathhint','customhint'));
}
@Apache::hint::which=();
sub start_hintgroup {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $skiptoend='0';
my $result;
if ($target eq 'web') {
my $id=$Apache::inputtags::part;
my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
if ( $numtries eq '') { $numtries = 0; }
my $hinttries=&Apache::response::get_response_param($id,"hinttries",1);
&Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
my $gradestatus=
$Apache::lonhomework::history{"resource.$id.solved"};
my $showoncorrect=lc(&Apache::lonxml::get_param('showoncorrect',$parstack,$safeeval));
&Apache::lonxml::debug("onc orrect $showoncorrect, $gradestatus");
if ( ($showoncorrect ne 'yes' && &Apache::response::show_answer()) ||
( $numtries < $hinttries) ) {
&Apache::lonxml::debug("Grabbin all");
&Apache::lonxml::get_all_text("/hintgroup",$parser,$style);
}
&Apache::lonxml::startredirection;
} elsif ($target eq 'tex') {
$result .= '\keephidden{';
} elsif ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token);
$result.=&Apache::edit::select_arg('Show hint even if problem Correct:','showoncorrect',[['no',&mt('No')],['yes',&mt('Yes')]],$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,'showoncorrect');
if ($constructtag) {
$result =&Apache::edit::rebuild_tag($token);
}
}
@Apache::hint::which=();
return $result;
}
sub end_hintgroup {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
if ($target eq 'web') {
my $id=$Apache::inputtags::part;
my $numtries=$Apache::lonhomework::history{"resource.$id.tries"};
if ( $numtries eq '') { $numtries = 0; }
my $hinttries=&Apache::response::get_response_param($id,"hinttries",1);
&Apache::lonxml::debug("found :$id:$numtries:$hinttries:");
my $hinttext=&Apache::lonxml::endredirection;
if ($Apache::lonhomework::type ne 'exam' &&
$numtries >= $hinttries && $hinttext =~/\S/) {
$result='<table bgcolor="#dddddd"><tr><td>'.
$hinttext.'</td></tr></table>';
}
} elsif ($target eq 'edit') {
$result.=&Apache::edit::end_row().&Apache::edit::end_table();
} elsif ($target eq 'tex') {
$result .= '}';
}
@Apache::hint::which=();
return $result;
}
sub start_numericalhint {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
#do everything in end, so intervening <responseparams> work
&Apache::response::start_hintresponse($parstack,$safeeval);
&Apache::caparesponse::push_answer();
my $result;
if ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token);
$result.=&Apache::edit::text_arg('Name:','name',$token);
$result.=&Apache::edit::text_arg('Answer:','answer',$token);
if ($token->[1] eq 'numericalhint') {
$result.=&Apache::edit::text_arg('Unit:','unit',$token,5).
&Apache::loncommon::help_open_topic('Physical_Units');
$result.=&Apache::edit::text_arg('Format:','format',$token,4).
&Apache::loncommon::help_open_topic('Numerical_Response_Format');
} elsif ($token->[1] eq 'formulahint') {
$result.=&Apache::edit::text_arg('Sample Points:','samples',
$token,40).
&Apache::loncommon::help_open_topic('Formula_Response_Sampling');
}
$result.=&Apache::edit::end_row();
$result.=&Apache::edit::start_spanning_row();
} elsif ($target eq 'modified') {
my $constructtag;
if ($token->[1] eq 'numericalhint') {
$constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'name',
'answer','unit','format');
} elsif ($token->[1] eq 'formulahint') {
$constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'name','answer',
'samples');
}
if ($constructtag) {
$result = &Apache::edit::rebuild_tag($token);
}
} elsif ($target eq 'web') {
&Apache::response::reset_params();
}
return $result;
}
sub end_numericalhint {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
if ($target eq 'web') {
if (!$Apache::lonxml::default_homework_loaded) {
&Apache::lonxml::default_homework_load($safeeval);
}
$safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
my $hint_name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
&Apache::response::setup_params('numericalhint',$safeeval);
my $partid=$Apache::inputtags::part;
my $id=$Apache::inputtags::hint[-1];
#id submissions occured under
my $submitid=$Apache::inputtags::response[-1];
my $response = $Apache::lonhomework::history{
"resource.$partid.$submitid.submission"};
&Apache::lonxml::debug("hintgroup is using $response<br />\n");
my @args = ('type','tol','sig','ans_fmt','unit','calc','samples');
my $args_ref =
&Apache::caparesponse::setup_capa_args($safeeval,$parstack,
\@args,$response);
my $hideunit=&Apache::response::get_response_param($partid.'_'.$submitid,'turnoffunit');
if (lc($hideunit) eq "yes") { delete($$args_ref{'unit'}); }
if ($$tagstack[-1] eq 'formulahint') {
if ($$args_ref{'samples'}) {
$$args_ref{'type'}='fml';
} else {
$$args_ref{'type'}='math';
}
} elsif ($$tagstack[-1] eq 'numericalhint') {
$$args_ref{'type'}='float';
}
&Apache::caparesponse::add_in_tag_answer($parstack,$safeeval);
my %answer = &Apache::caparesponse::get_answer();
my (@final_awards,@final_msgs,@ans_names);
foreach my $ans_name (keys(%answer)) {
&Apache::lonxml::debug(" doing $ans_name with ".join(':',@{ $answer{$ans_name}{'answers'} }));
${$safeeval->varglob('LONCAPA::CAPAresponse_answer')}=
dclone($answer{$ans_name});
&Apache::caparesponse::setup_capa_response($args_ref,$response);
my ($result,@msgs) =
&Apache::run::run("&caparesponse_check_list()",$safeeval);
&Apache::lonxml::debug("checking $ans_name $result with $response");
&Apache::lonxml::debug('msgs are '.join(':',@msgs));
my ($awards)=split(/:/,$result);
my @awards= split(/,/,$awards);
my ($ad, $msg) =
&Apache::inputtags::finalizeawards(\@awards,\@msgs);
push(@final_awards,$ad);
push(@final_msgs,$msg);
push(@ans_names,$ans_name);
}
my ($ad, $msg, $ans_name) =
&Apache::inputtags::finalizeawards(\@final_awards,
\@final_msgs,
\@ans_names,1);
if ($ad eq 'EXACT_ANS' || $ad eq 'APPROX_ANS') {
push(@Apache::hint::which,$hint_name);
}
$result='';
} elsif ($target eq 'meta') {
$result=&Apache::response::meta_package_write($token->[1]);
} elsif ($target eq 'edit') {
$result.=&Apache::edit::end_row().&Apache::edit::end_table();
}
&Apache::caparesponse::pop_answer();
&Apache::response::end_hintresponse();
return $result;
}
sub start_formulahint {
return &start_numericalhint(@_);
}
sub end_formulahint {
return &end_numericalhint(@_);
}
sub start_mathhint {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
#do everything in end, so intervening <responseparams> and <answer> work
&Apache::response::start_hintresponse($parstack,$safeeval);
&Apache::lonxml::register('Apache::response',('answer'));
my $result;
if ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token);
$result.=&Apache::edit::text_arg('Name:','name',$token);
$result.=&Apache::edit::select_arg('Algebra System:',
'cas',
['maxima'],
$token);
$result.=&Apache::edit::text_arg('Argument Array:',
'args',$token);
$result.=&Apache::edit::end_row();
$result.=&Apache::edit::start_spanning_row();
} elsif ($target eq 'modified') {
my $constructtag;
$constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'name','cas',
'args');
$result = &Apache::edit::rebuild_tag($token);
} elsif ($target eq 'web') {
&Apache::response::reset_params();
}
return $result;
}
sub end_mathhint {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
if ($target eq 'web') {
if (!$Apache::lonxml::default_homework_loaded) {
&Apache::lonxml::default_homework_load($safeeval);
}
my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
&Apache::response::setup_params('mathhint',$safeeval);
my $partid=$Apache::inputtags::part;
my $submitid=$Apache::inputtags::response[-1];
my $response = $Apache::lonhomework::history{
"resource.$partid.$submitid.submission"};
my $cas = &Apache::lonxml::get_param('cas',$parstack,$safeeval);
my $award;
if ($cas eq 'maxima') {
my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
$award=&Apache::lonmaxima::maxima_run($Apache::response::custom_answer[-1],$response,$args);
}
if ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS') {
push (@Apache::hint::which,$name);
}
$result='';
} elsif ($target eq 'meta') {
$result=&Apache::response::meta_package_write($token->[1]);
} elsif ($target eq 'edit') {
$result.=&Apache::edit::end_row().&Apache::edit::end_table();
}
pop(@Apache::response::custom_answer);
pop(@Apache::response::custom_answer_type);
&Apache::response::end_hintresponse();
return $result;
}
sub start_customhint {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
#do everything in end, so intervening <responseparams> and <answer> work
&Apache::response::start_hintresponse($parstack,$safeeval);
&Apache::lonxml::register('Apache::response',('answer'));
my $result;
if ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token);
$result.=&Apache::edit::text_arg('Name:','name',$token);
$result.=&Apache::edit::end_row();
$result.=&Apache::edit::start_spanning_row();
} elsif ($target eq 'modified') {
my $constructtag;
$constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'name');
$result = &Apache::edit::rebuild_tag($token);
} elsif ($target eq 'web') {
&Apache::response::reset_params();
}
return $result;
}
sub end_customhint {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
if ($target eq 'web') {
if (!$Apache::lonxml::default_homework_loaded) {
&Apache::lonxml::default_homework_load($safeeval);
}
my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
&Apache::response::setup_params('customhint',$safeeval);
my $partid=$Apache::inputtags::part;
my $submitid=$Apache::inputtags::response[-1];
my $response = $Apache::lonhomework::history{
"resource.$partid.$submitid.submission"};
my $award;
if ( $response =~ /[^\s]/ &&
$Apache::response::custom_answer_type[-1] eq 'loncapa/perl') {
if (!$Apache::lonxml::default_homework_loaded) {
&Apache::lonxml::default_homework_load($safeeval);
}
${$safeeval->varglob('LONCAPA::customresponse_submission')}=
$response;
$award = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer[-1].'}',$safeeval);
}
if ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS') {
push (@Apache::hint::which,$name);
}
$result='';
} elsif ($target eq 'meta') {
$result=&Apache::response::meta_package_write($token->[1]);
} elsif ($target eq 'edit') {
$result.=&Apache::edit::end_row().&Apache::edit::end_table();
}
pop(@Apache::response::custom_answer);
pop(@Apache::response::custom_answer_type);
&Apache::response::end_hintresponse();
return $result;
}
sub start_stringhint {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
#do everything in end, so intervening <responseparams> work
&Apache::response::start_hintresponse($parstack,$safeeval);
my $result;
if ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token);
$result.=&Apache::edit::text_arg('Name:','name',$token);
$result.=&Apache::edit::text_arg('Answer:','answer',$token);
$result.=&Apache::edit::select_arg('Type:','type',
[['cs','Case Sensitive'],['ci','Case Insensitive'],
['mc','Case Insensitive, Any Order'],
['re','Regular Expression']],$token);
$result.=&Apache::edit::end_row();
$result.=&Apache::edit::start_spanning_row();
} elsif ($target eq 'modified') {
my $constructtag;
$constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'name','answer',
'type');
$result = &Apache::edit::rebuild_tag($token);
} elsif ($target eq 'web') {
&Apache::response::reset_params();
}
return $result;
}
sub end_stringhint {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
if ($target eq 'web') {
if (!$Apache::lonxml::default_homework_loaded) {
&Apache::lonxml::default_homework_load($safeeval);
}
$safeeval->share_from('capa',['&caparesponse_capa_check_answer']);
my $hint_name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
&Apache::response::setup_params('stringhint',$safeeval);
my $partid=$Apache::inputtags::part;
my $id=$Apache::inputtags::hint[-1];
#id submissions occured under
my $submitid=$Apache::inputtags::response[-1];
my $response = $Apache::lonhomework::history{
"resource.$partid.$submitid.submission"};
&Apache::lonxml::debug("hintgroup is using $response<br />\n");
my $type = &Apache::lonxml::get_param('type',$parstack,$safeeval);
my ($ad,$msg);
if ($type eq 're' ) {
my $answer=&Apache::lonxml::get_param('answer',$parstack,
$safeeval);
${$safeeval->varglob('LONCAPA::response')}=$response;
my $compare='=';
if ($answer=~/^\s*NOT\s*/) {
$answer=~s/^\s*NOT\s*//;
$compare='!';
}
my $test='$LONCAPA::response'.$compare.'~m'.$answer;
&Apache::lonxml::debug("test $test");
$result = &Apache::run::run("return $test",$safeeval);
&Apache::lonxml::debug("current $response");
&Apache::lonxml::debug("current $answer");
$ad = ($result) ? 'APPROX_ANS' : 'INCORRECT';
} else {
my @args = ('type');
my $args_ref =
&Apache::caparesponse::setup_capa_args($safeeval,$parstack,
\@args,$response);
&Apache::caparesponse::add_in_tag_answer($parstack,$safeeval);
my (@final_awards,@final_msgs,@ans_names);
my %answer = &Apache::caparesponse::get_answer();
foreach my $ans_name (keys(%answer)) {
&Apache::lonxml::debug(" doing $ans_name with ".join(':',@{ $answer{$ans_name}{'answers'} }));
${$safeeval->varglob('LONCAPA::CAPAresponse_answer')}=dclone($answer{$ans_name});
my ($result, @msgs)=&Apache::run::run("&caparesponse_check_list()",$safeeval);
&Apache::lonxml::debug('msgs are'.join(':',@msgs));
my ($awards) = split(/:/,$result);
my (@awards) = split(/,/,$awards);
($ad,$msg) =
&Apache::inputtags::finalizeawards(\@awards,\@msgs);
push(@final_awards,$ad);
push(@final_msgs,$msg);
push(@ans_names,$ans_name);
&Apache::lonxml::debug("\n<br>result:$result:$Apache::lonxml::curdepth<br>\n");
}
my ($ad, $msg, $ans_name) =
&Apache::inputtags::finalizeawards(\@final_awards,
\@final_msgs,
\@ans_names,1);
}
if ($ad eq 'EXACT_ANS' || $ad eq 'APPROX_ANS') {
push(@Apache::hint::which,$hint_name);
}
$result='';
} elsif ($target eq 'meta') {
$result=&Apache::response::meta_package_write($token->[1]);
} elsif ($target eq 'edit') {
$result.=&Apache::edit::end_row().&Apache::edit::end_table();
}
&Apache::response::end_hintresponse();
return $result;
}
# a part shows if it is on, if no specific parts are on, then default shows
sub start_hintpart {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $show ='0';
my $result = '';
if ($target eq 'web') {
my $on= &Apache::lonxml::get_param('on',$parstack,$safeeval);
&Apache::lonxml::debug("hintpart sees $on and ,$#Apache::hint::which");
if ( $on eq 'default' && $#Apache::hint::which == '-1') {
$show=1;
} else {
my $which;
foreach $which (@Apache::hint::which) { if ($which eq $on) { $show = 1; last } }
}
if (!$show) {
&Apache::lonxml::get_all_text("/hintpart",$parser,$style);
}
} elsif ($target eq 'grade') {
&Apache::lonxml::get_all_text("/hintpart",$parser,$style);
} elsif ($target eq 'edit') {
$result.= &Apache::edit::tag_start($target,$token);
$result.= &Apache::edit::text_arg('On:','on',$token);
$result.= &Apache::edit::end_row();
$result.= &Apache::edit::start_spanning_row();
} elsif ($target eq 'modified') {
my $constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'on');
if ($constructtag) {
$result = &Apache::edit::rebuild_tag($token);
}
}
return $result;
}
sub end_hintpart {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result;
if ($target eq 'edit') {
$result.=&Apache::edit::end_row().&Apache::edit::end_table();
}
return $result;
}
sub start_optionhint {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result;
&Apache::response::start_hintresponse($parstack,$safeeval);
if ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token);
$result.=&Apache::edit::text_arg('Name:','name',$token);
$result.=&Apache::edit::text_arg('Answer:','answer',$token,40);
$result.=&Apache::edit::text_arg('Concept:','concept',$token,50);
} elsif ($target eq 'modified') {
my $constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'name',
'answer','concept');
if ($constructtag) {
$result = &Apache::edit::rebuild_tag($token);
}
} elsif ($target eq 'meta') {
$result=&Apache::response::meta_package_write('numericalhint');
}
return $result;
}
sub end_optionhint {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result;
if ($target eq 'web') {
my ($foilmatch,$conceptmatch)=(-1,-1);
my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
my $partid=$Apache::inputtags::part;
#id submissions occured under
my $submitid=$Apache::inputtags::response[-1];
my $part_id="$partid.$submitid";
my %answer;
my $answer=&Apache::lonxml::get_param('answer',$parstack,$safeeval);
if ($answer) {
eval('%answer ='.$answer);
&Apache::lonxml::debug("answwer hash");
&Apache::lonhomework::showhash(%answer);
my $response = $Apache::lonhomework::history{
"resource.$part_id.submission"};
my %response=&Apache::lonnet::str2hash($response);
&Apache::lonhomework::showhash(%response);
foreach my $foil (keys(%answer)) {
$foilmatch=1;
if ($answer{$foil} ne $response{$foil}) {$foilmatch=0;last;}
}
}
my %concept;
my $constr=&Apache::lonxml::get_param('concept',$parstack,$safeeval);
if ( $constr ) { eval('%concept ='.$constr); }
my $response = $Apache::lonhomework::history{
"resource.$part_id.submissiongrading"};
my %response=&Apache::lonnet::str2hash($response);
foreach my $concept (keys(%concept)) {
my $compare;
if ($concept{$concept} eq 'correct') {$compare=1}else{$compare=0}
$conceptmatch=1;
if (ref($Apache::hint::option{"$part_id.concepts"})) {
foreach my $foil (@{ $Apache::hint::option{"$part_id.concept.$concept"} }) {
&Apache::lonxml::debug("compare -$foil- -$response{$foil}-$compare-");
if ( exists($response{$foil}) &&
$response{$foil} ne $compare) {$conceptmatch=0;last;}
}
} else {
$conceptmatch=0;
}
if ($conceptmatch eq '0') { last; }
}
if ( ($conceptmatch eq '-1' || $conceptmatch eq '1') &&
($foilmatch eq '-1' || $foilmatch eq '1') ) {
push(@Apache::hint::which,$name);
}
} elsif ($target eq 'edit') {
$result.=&Apache::edit::end_row().&Apache::edit::end_table();
}
&Apache::response::end_hintresponse();
return $result;
}
sub start_radiobuttonhint {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result;
&Apache::response::start_hintresponse($parstack,$safeeval);
if ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token);
$result.=&Apache::edit::text_arg('Name:','name',$token);
$result.=&Apache::edit::text_arg('Answer:','answer',$token);
} elsif ($target eq 'modified') {
my $constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'name',
'answer');
if ($constructtag) {
$result = &Apache::edit::rebuild_tag($token);
}
} elsif ($target eq 'meta') {
$result=&Apache::response::meta_package_write('numericalhint');
}
return $result;
}
sub end_radiobuttonhint {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result;
if ($target eq 'web') {
my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
my @answer;
my $answer=&Apache::lonxml::get_param('answer',$parstack,$safeeval);
eval('@answer ='.$answer);
my $partid=$Apache::inputtags::part;
#id submissions occured under
my $submitid=$Apache::inputtags::response[-1];
my $part_id="$partid.$submitid";
my $response = $Apache::lonhomework::history{
"resource.$part_id.submission"};
($response)=&Apache::lonnet::str2hash($response);
&Apache::lonxml::debug("response is $response");
if ($answer[0] eq 'foil') {
shift(@answer);
foreach my $answer (@answer) {
if ($response eq $answer) {
push (@Apache::hint::which,$name);
last;
}
}
} elsif ($answer[0] eq 'concept') {
shift(@answer);
foreach my $answer (@answer) {
if (ref($Apache::hint::radiobutton{"$part_id.concept.".$answer})) {
my @names=@{ $Apache::hint::radiobutton{"$part_id.concept.".$answer} };
if (grep(/^\Q$response\E$/,@names)) {
push(@Apache::hint::which,$name);
last;
}
}
}
}
} elsif ($target eq 'edit') {
$result.=&Apache::edit::end_row().&Apache::edit::end_table();
}
&Apache::response::end_hintresponse();
return $result;
}
1;
__END__
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