1: # The LearningOnline Network with CAPA
2: # tags that create controlled output
3: #
4: # $Id: outputtags.pm,v 1.30 2003/07/01 21:10:43 albertel Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: package Apache::outputtags;
30:
31: use strict;
32: use Apache::lonnet;
33: use POSIX qw(strftime);
34:
35: BEGIN {
36: &Apache::lonxml::register('Apache::outputtags',('displayduedate','displaytitle','displayweight'));
37: }
38:
39: sub initialize_outputtags {
40: %Apache::outputtags::showonce=();
41: }
42:
43: sub start_displayduedate {
44: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
45: my $result;
46: if (exists($Apache::outputtags::showonce{'displayduedate'})) {
47: return '';
48: } else {
49: $Apache::outputtags::showonce{'displayduedate'}=1;
50: }
51: my $status=$Apache::inputtags::status['-1'];
52: &Apache::lonxml::debug("got a $status in duedatebox");
53: if (($status =~ /CAN.*_ANSWER/) && ($target eq 'web')) {
54: # my $format = &Apache::lonxml::get_param('format',$parstack,$safeeval);
55: # if ($format eq '') {
56: # &Apache::lonxml::debug("using default format");
57: # $format="%c";
58: # }
59: my $id = $Apache::inputtags::part;
60: my $date = &Apache::lonnet::EXT("resource.$id.duedate");
61: &Apache::lonxml::debug("duedatebox found $date for $id");
62: $result ='<table border="on"><tr><td>Due '.
63: &Apache::lonnavmaps::timeToHumanString($date).
64: '</td></tr></table>';
65: # } else {
66: # $result ='<table border="on"><tr><td>No due date set.</td></tr></table>';
67: # }
68: } elsif ( $target eq 'edit' ) {
69: $result=&Apache::edit::tag_start($target,$token);
70: $result.='</td></tr>';
71: $result.=&Apache::edit::end_table();
72: }
73: return $result;
74: }
75:
76: sub end_displayduedate {
77: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
78: my @result;
79: if ($target eq 'edit') { $result[1]='no'; }
80: return @result;
81: }
82:
83: sub start_displaytitle {
84: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
85: my $result='';
86: if (exists($Apache::outputtags::showonce{'displayduetitle'})) {
87: return '';
88: } else {
89: $Apache::outputtags::showonce{'displayduetitle'}=1;
90: }
91: if ($target eq 'web') {
92: $result="<h1>$Apache::lonhomework::name</h1>";
93: } elsif ($target eq 'edit') {
94: $result=&Apache::edit::tag_start($target,$token);
95: $result.='</td></tr>';
96: $result.=&Apache::edit::end_table();
97: } elsif ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
98: $Apache::lonhomework::name=~s/%/\%/g;
99: $Apache::lonhomework::name=~s/&/\&/g;
100: $result='\vskip 0 mm\noindent\textbf{'.$Apache::lonhomework::name.'}\vskip 0 mm';
101: }
102: return $result;
103: }
104:
105: sub end_displaytitle {
106: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
107: my @result;
108: if ($target eq 'edit') { $result[1]='no'; }
109: return @result;
110: }
111:
112: sub multipart {
113: my ($uri)=@_;
114: if (!defined($uri)) { $uri=$ENV{'request.uri'}; }
115: my @parts;
116: my $metadata = &Apache::lonnet::metadata($uri,'packages');
117: foreach (split(/\,/,$metadata)) {
118: if ($_ =~ /^part_(.*)$/) {
119: my $part = $1;
120: if ($part ne '0') { push(@parts,$part); }
121: }
122: }
123: return @parts;
124: }
125:
126: sub start_displayweight {
127: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
128: my $result;
129: if (exists($Apache::outputtags::showonce{'displayweight'})) {
130: if(grep(/^\Q$Apache::inputtags::part\E$/,
131: @{$Apache::outputtags::showonce{'displayweight'}})) {
132: return '';
133: }
134: }
135: push(@{$Apache::outputtags::showonce{'displayweight'}},
136: $Apache::inputtags::part);
137: my $status=$Apache::inputtags::status['-1'];
138: if ($target eq 'web' || $target eq 'tex') {
139: my $id = $Apache::inputtags::part;
140: if ($id ne '0') {
141: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
142: if (!defined($weight) || ($weight eq '')) { $weight=1; }
143: $result.=$weight;
144: } else {
145: my @parts=&multipart($ENV{'request.uri'});
146: my $weight;
147: if (@parts) {
148: foreach my $part (@parts) {
149: my $pweight=&Apache::lonnet::EXT("resource.$part.weight");
150: if (!defined($pweight) || ($pweight eq '')) { $pweight=1; }
151: $weight+=$pweight;
152: }
153: } else {
154: $weight = &Apache::lonnet::EXT("resource.$id.weight");
155: if (!defined($weight) || ($weight eq '')) { $weight=1; }
156: }
157: $result=$weight;
158: }
159: } elsif ( $target eq 'edit' ) {
160: $result=&Apache::edit::tag_start($target,$token);
161: $result.='</td></tr>';
162: $result.=&Apache::edit::end_table();
163: }
164: return $result;
165: }
166:
167: sub end_displayweight {
168: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
169: my @result;
170: if ($target eq 'edit') { $result[1]='no'; }
171: return @result;
172: }
173:
174: 1;
175: __END__
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