# The LearningOnline Network with CAPA
# definition of tags that give a structure to a document
#
# $Id: structuretags.pm,v 1.175 2003/05/15 21:44:23 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/
#
# 2/19 Guy
# 6/26/2001 fixed extra web display at end of tags
# 8/17,8/18,8/20 Gerd Kortemeyer
package Apache::structuretags;
use strict;
use Apache::lonnet;
use Apache::File();
use Apache::lonmenu;
BEGIN {
&Apache::lonxml::register('Apache::structuretags',('block','languageblock','instructorcomment','while','randomlist','problem','library','web','tex','part','preduedate','postanswerdate','solved','notsolved','startouttext','endouttext'));
}
sub start_web {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $bodytext=&Apache::lonxml::get_all_text("/web",$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);
if ($target eq 'tex') {
return $bodytext.' ';
}
return '';
}
sub end_tex {
return '';
}
sub page_start {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my %found;
foreach my $taginside ($tagstack) {
foreach my $taglookedfor ('html','body','form') {
if ($taginside =~ /^$taglookedfor$/i) {$found{$taglookedfor} = 1;}
}
}
my $result;
my $head_tag_start;
if (!defined($found{'html'})) {
$result=&Apache::londefdef::start_html($target,$token,$tagstack,
$parstack,$parser,$safeeval);
$head_tag_start='
'.&Apache::lonmenu::registerurl(undef,$target);
}
my $body_tag_start;
if (!defined($found{'body'})) {
$body_tag_start=''.&Apache::lonmenu::menubuttons(undef,$target,1);
if ($target eq 'web' && $ENV{'request.state'} ne 'construct') {
my ($symb,undef,undef,undef,$publicuser)=
&Apache::lonxml::whichuser();
if ($symb eq '' && !$publicuser) {
my $help = &Apache::loncommon::help_open_topic("Ambiguous_Reference");
$help="Browsing resource, all submissions are temporary.
";
$body_tag_start.=$help;
}
}
}
my $form_tag_start;
if (!defined($found{'form'})) {
$form_tag_start='