1: # The LearningOnline Network
2: # Bulletin Board Handler
3: #
4: # $Id: lonbulletin.pm,v 1.31 2005/10/30 02:39:09 www 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::lonbulletin;
30:
31: use strict;
32: use Apache::Constants qw(:common);
33: use Apache::loncommon;
34: use Apache::lonnet;
35: use Apache::lontexconvert;
36: use Apache::lonfeedback;
37: use Apache::lonlocal;
38:
39: sub handler {
40: my $r = shift;
41: &Apache::loncommon::content_type($r,'text/html');
42: $r->send_http_header;
43: return OK if $r->header_only;
44: my $target=$env{'form.grade_target'};
45:
46: # ------------------------------------------------------------ Print the screen
47: if ($target ne 'tex') {
48: my $html=&Apache::lonxml::xmlbegin();
49: $r->print(<<ENDDOCUMENT);
50: $html
51: <head>
52: <title>The LearningOnline Network with CAPA</title>
53: ENDDOCUMENT
54: } else {
55: $r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
56: }
57: my (undef,undef,undef,undef,$marker)=split(/\//,$r->uri);
58: # Is this even in a course?
59: unless ($env{'request.course.id'}) {
60: $r->print('</head><body>Not in a course</body></html>');
61: return OK;
62: }
63:
64: $marker=~s/\D//g;
65:
66: unless ($marker) {
67: $r->print('<body>Invalid call</body>');
68: return OK;
69: }
70:
71: my $dom = $env{'course.'.$env{'request.course.id'}.'.domain'};
72: my $crs = $env{'course.'.$env{'request.course.id'}.'.num'};
73:
74: # --------------------------------------------------------- The syllabus fields
75: my %syllabusfields=&Apache::lonlocal::texthash(
76: 'aaa_title' => 'Topic',
77: 'bbb_content' => 'Task',
78: 'ccc_webreferences' => 'Web References');
79:
80: # ------------------------------------------------------------ Get Query String
81: &Apache::loncommon::get_unprocessed_cgi
82: ($ENV{'QUERY_STRING'},['forcestudent','forceedit','register','origpage']);
83: # ----------------------------------------------------- Force menu registration
84: my $addentries='';
85: if ($env{'form.register'}) {
86: $addentries=' onLoad="'.&Apache::lonmenu::loadevents();
87: if ($env{'form.origpage'}) {
88: $addentries .= "document.location='#newpost';";
89: }
90: $addentries .= '" onUnload="'.&Apache::lonmenu::unloadevents().'"';
91: $r->print(&Apache::lonmenu::registerurl(1));
92: } elsif ($env{'form.origpage'}) {
93: $addentries = "onLoad=\"document.location='#newpost';\"";
94: }
95: # --------------------------------------------------------------- Force Student
96: my $forcestudent='';
97: if ($env{'form.forcestudent'}) { $forcestudent='student'; }
98:
99: my $forceedit='';
100: if ($env{'form.forceedit'}) { $forceedit='edit'; }
101:
102: my %syllabus=&Apache::lonnet::dump('bulletinpage_'.$marker,$dom,$crs);
103:
104: # --------------------------------------- There is such a user, get environment
105: if ($target ne 'tex') {
106: $r->print('</head>'.&Apache::loncommon::bodytag
107: ("Bulletin Board/Discussion",$forcestudent,$addentries,'',$dom,
108: $env{'form.register'}));
109: }
110: my $allowed=&Apache::lonnet::allowed('mdc',$env{'request.course.id'});
111:
112: my $privileged=$allowed;
113: if (($syllabus{'uploaded.lastmodified'}) && (!$forceedit)) {
114: $forcestudent='student';
115: }
116: if ($target ne 'tex') { $r->print('<table><tr><td>'); }
117: if ($forcestudent or $target eq 'tex') { $allowed=0; }
118:
119: if ($allowed) {
120: $r->print(
121: '<p>'.
122: &Apache::loncommon::help_open_topic('Uploaded_Templates_TextBoxes','Help with filling in text boxes').'<br /><a href="'.$r->uri.'?forcestudent=1"><font size="+1">'.&mt('Show Student View').'</font></a>'.
123: &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').'</p>');
124: } elsif ($privileged and $target ne 'tex') {
125: $r->print('<a href="'.$r->uri.'?forceedit=edit"><font size="+1">'
126: .&mt('Edit').'</font></a>');
127: }
128:
129: if (($env{'form.uploaddoc.filename'}) &&
130: ($env{'form.storeupl'}) && ($allowed)) {
131: if ($env{'form.uploaddoc.filename'}=~/\.(gif|jpg|png|jpeg)$/i) {
132: if ($syllabus{'uploaded.photourl'}) {
133: &Apache::lonnet::removeuploadedurl($syllabus{'uploaded.photourl'});
134: }
135: $syllabus{'uploaded.photourl'}=
136: &Apache::lonnet::userfileupload('uploaddoc',1,'bulletin');
137: }
138: $syllabus{'uploaded.lastmodified'}=time;
139: &Apache::lonnet::put('bulletinpage_'.$marker,\%syllabus,$dom,$crs);
140: }
141: if (($allowed) && ($env{'form.storesyl'})) {
142: foreach (keys %syllabusfields) {
143: my $field=$env{'form.'.$_};
144: $field=~s/\s+$//s;
145: $field=&Apache::lonfeedback::clear_out_html($field,1);
146: $syllabus{$_}=$field;
147: }
148: $syllabus{'uploaded.lastmodified'}=time;
149: &Apache::lonnet::put('bulletinpage_'.$marker,\%syllabus,$dom,$crs);
150: }
151:
152: # ---------------------------------------------------------------- Get syllabus
153: if (($syllabus{'uploaded.lastmodified'}) || ($allowed)) {
154: if ($syllabus{'uploaded.photourl'}) {
155: &Apache::lonnet::allowuploaded('/adm/syllabus',
156: $syllabus{'uploaded.photourl'});
157: $r->print('<img src="'.$syllabus{'uploaded.photourl'}.
158: '" align="right" />');
159: }
160: if ($allowed) {
161: $r->print(
162: '<form method="post" enctype="multipart/form-data">'.
163: '<input type="hidden" name="forceedit" value="edit" />'.
164: '<h3>'.&mt('Upload a Photo').'</h3>'.
165: '<input type="file" name="uploaddoc" size="50">'.
166: '<input type="submit" name="storeupl" value="'.&mt('Upload').'">'.
167: '</form><form method="post">');
168: }
169: foreach (sort keys %syllabusfields) {
170: if (($syllabus{$_}) || ($allowed)) {
171: my $message=$syllabus{$_};
172: &Apache::lonfeedback::newline_to_br(\$message);
173: $message
174: =~s/(https*\:\/\/[^\s]+)/\<a href=\"$1\"\>\<tt\>$1\<\/tt\>\<\/a\>/g;
175: if ($allowed) {
176: $message=&Apache::lonspeller::markeduptext($message);
177: }
178: $message=&Apache::lontexconvert::msgtexconverted($message);
179: unless ($_ eq 'aaa_title') {
180: if (($_ ne 'bbb_content') || ($allowed)) {
181: if ($target ne 'tex') {
182: $r->print('<h3>'.$syllabusfields{$_}.'</h3>');
183: } else {
184: $r->print('\\\\\textbf{'.$syllabusfields{$_}.'}\\\\');
185: }
186: }
187: if ($target ne 'tex') {
188: $r->print('<blockquote>'.
189: $message.'</blockquote>');
190: } else {
191: $r->print(' '.&Apache::lonxml::xmlparse($r,'tex',$message).' ');
192: }
193: if ($allowed) {
194: $r->print('<br /><textarea cols="80" rows="10" name="'.$_.'">'.
195: $syllabus{$_}.
196: '</textarea><input type="submit" name="storesyl" value="'.&mt('Store').'" />');
197: }
198: } else {
199: if ($target ne 'tex') {
200: $r->print('<h1>'.$message.'</h1>');
201: } else {
202: $r->print('\\\\\textbf{'.&Apache::lonxml::xmlparse($r,'tex',$message).'}\\\\');
203: }
204: if ($allowed) {
205: $r->print(
206: '<br />'.&mt('Topic').'<br /><textarea cols="80" rows="2" name="'.$_.'">'.
207: $syllabus{$_}.
208: '</textarea><input type="submit" name="storesyl" value="'.&mt('Store').'" />');
209: }
210: }
211: }
212: }
213: if ($allowed) {
214: $r->print('</form>');
215: }
216: if ($target ne 'tex') {$r->print('</p>');} else {$r->print('\\\\');}
217: } else {
218: $r->print('<p>'.&mt('No page information provided.').'</p>');
219: }
220: if ($target ne 'tex') { $r->print('</td></tr></table>'); }
221: if ($target ne 'tex') {
222: $r->print(&Apache::lonfeedback::list_discussion
223: ('board','OPEN','bulletin___'.$marker.'___'.
224: $r->uri));
225: } else {
226: $r->print('\\\\'.&Apache::lonxml::xmlparse($r,'tex',&Apache::lonfeedback::list_discussion
227: ('board','OPEN','bulletin___'.$marker.'___'.
228: $r->uri)));
229: }
230: if ($target ne 'tex') {$r->print('</body></html>');} else {$r->print('\end{document}');}
231: return OK;
232: }
233:
234: 1;
235: __END__
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