# The LearningOnline Network with CAPA
# tags that create controlled output
#
# $Id: outputtags.pm,v 1.33 2003/10/07 17:52:29 www 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','displayweight'));
}
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");
my $style = &Apache::lonxml::get_param('style',$parstack,$safeeval);
if (($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 $id");
if (lc($style) !~ 'plain') {
$result ='
Due '.
&Apache::lonnavmaps::timeToHumanString($date).
' |
';
} else {
$result=&mt('Due').' '.&Apache::lonnavmaps::timeToHumanString($date);
}
# } else {
# $result ='';
# }
} elsif ( $target eq 'edit' ) {
$result=&Apache::edit::tag_start($target,$token);
$result.='';
$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{'displayduetitle'})) {
return '';
} else {
$Apache::outputtags::showonce{'displayduetitle'}=1;
}
my $name=&Apache::structuretags::get_resource_name();
my $style = &Apache::lonxml::get_param('style',$parstack,$safeeval);
if ($target eq 'web') {
$result=$name;
if (lc($style) !~ 'plain') { $result="$name
"; }
} elsif ($target eq 'edit') {
$result=&Apache::edit::tag_start($target,$token);
$result.='';
$result.=&Apache::edit::end_table();
} elsif ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
$name=&Apache::lonxml::latex_special_symbols($name);
if (lc($style) !~ 'plain') {
$result='\vskip 0 mm\noindent\textbf{'.$name.'}\vskip 0 mm';
} else {
$result=$name;
}
}
return $result;
}
sub end_displaytitle {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my @result;
if ($target eq 'edit') { $result[1]='no'; }
return @result;
}
sub multipart {
my ($uri)=@_;
if (!defined($uri)) { $uri=$ENV{'request.uri'}; }
my @parts;
my $metadata = &Apache::lonnet::metadata($uri,'packages');
foreach (split(/\,/,$metadata)) {
if ($_ =~ /^part_(.*)$/) {
my $part = $1;
if ($part ne '0') { push(@parts,$part); }
}
}
return @parts;
}
sub start_displayweight {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my $result;
if (exists($Apache::outputtags::showonce{'displayweight'})) {
if(grep(/^\Q$Apache::inputtags::part\E$/,
@{$Apache::outputtags::showonce{'displayweight'}})) {
return '';
}
}
push(@{$Apache::outputtags::showonce{'displayweight'}},
$Apache::inputtags::part);
my $status=$Apache::inputtags::status['-1'];
if ($target eq 'web' || $target eq 'tex') {
my $id = $Apache::inputtags::part;
if ($id ne '0') {
my $weight = &Apache::lonnet::EXT("resource.$id.weight");
if (!defined($weight) || ($weight eq '')) { $weight=1; }
$result.=$weight;
} else {
my @parts=&multipart($ENV{'request.uri'});
my $weight;
if (@parts) {
foreach my $part (@parts) {
my $pweight=&Apache::lonnet::EXT("resource.$part.weight");
if (!defined($pweight) || ($pweight eq '')) { $pweight=1; }
$weight+=$pweight;
}
} else {
$weight = &Apache::lonnet::EXT("resource.$id.weight");
if (!defined($weight) || ($weight eq '')) { $weight=1; }
}
$result=$weight;
}
} elsif ( $target eq 'edit' ) {
$result=&Apache::edit::tag_start($target,$token);
$result.='';
$result.=&Apache::edit::end_table();
}
return $result;
}
sub end_displayweight {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
my @result;
if ($target eq 'edit') { $result[1]='no'; }
return @result;
}
1;
__END__