# The LearningOnline Network with CAPA
# definition of tags that give a structure to a document
# 2/19 Guy
# 6/26/2001 fixed extra web display at end of tags
# 8/17,8/18 Gerd Kortemeyer
package Apache::structuretags;
use strict;
use Apache::lonnet;
sub BEGIN {
&Apache::lonxml::register('Apache::structuretags',('block','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext'));
# &Apache::lonxml::register_insert('problem','',('part','postanswerdate','preduedate'))
}
sub start_web {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $bodytext=&Apache::lonxml::get_all_text("/web",$$parser[$#$parser]);
if ($target eq 'web') {
return $bodytext;
}
return '';
}
sub end_web {
return '';
}
sub start_tex {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $bodytext=&Apache::lonxml::get_all_text("/tex",$$parser[$#$parser]);
if ($target eq 'tex') {
return $bodytext
}
return '';
}
sub end_tex {
return '';
}
sub page_start {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result=&Apache::londefdef::start_html($target,$token,$tagstack,$parstack,$parser,$safeeval);
my $head_tag_start='
'.&Apache::lonxml::registerurl();
my $body_tag_start='';
return ($result,$head_tag_start,$body_tag_start);
}
sub start_problem {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
#intialize globals
$Apache::inputtags::part='0';
@Apache::inputtags::responselist = ();
@Apache::inputtags::previous=();
$Apache::lonhomework::type=&Apache::lonnet::EXT('resource.0.type');
&Apache::lonxml::debug("Found this to be of type :$Apache::lonhomework::type:");
if ($Apache::lonhomework::type eq '') {
my $uri=$ENV{'request.uri'};
if ($uri=~/\.(\w+)$/) {
$Apache::lonhomework::type=$1;
&Apache::lonxml::debug("Using type of $1");
} else {
$Apache::lonhomework::type='problem';
&Apache::lonxml::debug("Using default type, problem, :$uri:");
}
}
#adeed vars to the scripting enviroment
my $expression='$external::part='.$Apache::inputtags::part.';';
&Apache::run::run($expression,$safeeval);
my $status;
my $accessmsg;
#should get back a or the neccesary stuff to start XML/MathML
my ($result,$head_tag_start,$body_tag_start)=
&page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
if ($Apache::lonhomework::type eq 'exam') {
if ($target eq 'web') {
my $token=$Apache::lonhomework::history{"resource.0.outtoken"};
if (($ENV{'form.doescheckout'}) && (!$token)) {
$token=&Apache::lonxml::maketoken();
}
$body_tag_start.=&Apache::lonxml::printtokenheader($target,$token);
}
if ($target eq 'meta') {
print "Cool, I was called";
return (<
ENDSTORES
}
}
if ($target eq 'web' || $target eq 'grade') {
($status,$accessmsg) = &Apache::lonhomework::check_access('0');
push (@Apache::inputtags::status,$status);
my $expression='$external::datestatus="'.$status.'";';
$expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
&Apache::run::run($expression,$safeeval);
if (( $status eq 'CLOSED' ) ||
( $status eq 'UNCHECKEDOUT') ||
( $status eq 'BANNED')) {
my $bodytext=&Apache::lonxml::get_all_text("/problem",$$parser[$#$parser]);
if ( $target eq "web" ) {
$result.= $head_tag_start.'';
my $msg=$body_tag_start.
'Not open to be viewed
';
if ($status eq 'CLOSED') {
$msg.='The problem '.$accessmsg;
} elsif ($status eq 'UNCHECKEDOUT') {
$msg.=(<The resource needs to be checked out
As a resource gets checked out, a unique timestamped ID is given to it, and a
permanent record is left in the system.
Checking out resources is subject to course policies, and may exclude future
credit even if done erroneously.
ENDCHECKOUT
}
return $result.$msg.'
';
}
}
}
if ($target eq 'web') {
my $name= &Apache::lonxml::get_param('name',$parstack,$safeeval);
if ($name eq '') {
$name=&Apache::lonnet::EXT('resource.title');
if ($name eq 'con_lost') { $name = ''; }
}
$Apache::lonhomework::name=$name;
if ($status eq 'CAN_ANSWER') {
# create a page header and exit
$result.="$head_tag_start$name\n
$body_tag_start\n