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- retabinate
- <displaytitle /> and <displayduedate /> should only have an effect once

# The LearningOnline Network with CAPA 
# tags that create controlled output
#
# $Id: outputtags.pm,v 1.20 2002/10/16 19:21:32 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::outputtags; 

use strict;
use Apache::lonnet;
use POSIX qw(strftime);

BEGIN {
    &Apache::lonxml::register('Apache::outputtags',('displayduedate','displaytitle'));
}

sub initialize_outputtags {
    %Apache::outputtags::showonce=();
}

sub start_displayduedate {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
    my $result;
    if (exists($Apache::outputtags::showonce{'displayduedate'})) {
	return '';
    } else {
	$Apache::outputtags::showonce{'displayduedate'}=1;
    }
    my $status=$Apache::inputtags::status['-1'];
    &Apache::lonxml::debug("got a $status in duedatebox");
    if (($status =~ /CAN.*_ANSWER/) && ($target eq 'web')) {
	my $format = &Apache::lonxml::get_param('format',$parstack,$safeeval);
	if ($format eq '') {
	    &Apache::lonxml::debug("using default format");
	    $format="%c";
	}
	my $id = $Apache::inputtags::part;
	my $date = &Apache::lonnet::EXT("resource.$id.duedate");
	&Apache::lonxml::debug("duedatebox found $date for $id");
	if ($date) {
	    $result ='<table border="on"><tr><td>Due at '.
		POSIX::strftime($format,localtime($date)).
			'</td></tr></table>';
	} else {
	    $result ='<table border="on"><tr><td>No due date set.</td></tr></table>';
	}
    } elsif ( $target eq 'edit' ) {
	$result=&Apache::edit::tag_start($target,$token);
	$result.='</td></tr>';
	$result.=&Apache::edit::end_table();
    }
    return $result;
}

sub end_displayduedate {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
    my @result;
    if ($target eq 'edit') { $result[1]='no'; }
    return @result;
}

sub start_displaytitle {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
    my $result='';
    if (exists($Apache::outputtags::showonce{'displayduedate'})) {
	return '';
    } else {
	$Apache::outputtags::showonce{'displayduedate'}=1;
    }
    if ($target eq 'web') {
	$result="<h1>$Apache::lonhomework::name</h1>";
    } elsif ($target eq 'edit') {
	$result=&Apache::edit::tag_start($target,$token);
	$result.='</td></tr>';
	$result.=&Apache::edit::end_table();
    } elsif ($target eq 'tex') {
	$Apache::lonhomework::name=~s/%/\%/g;
	$Apache::lonhomework::name=~s/&/\&/g;
	$result='\vskip 0 mm\noindent\textbf{'.$Apache::lonhomework::name.'}\vskip 0 mm';
    }
    return $result;
}

sub end_displaytitle {
    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
    my @result;
    if ($target eq 'edit') { $result[1]='no'; }
    return @result;
}

1;
__END__