1: # The LearningOnline Network
2: # Syllabus
3: #
4: # $Id: lonsyllabus.pm,v 1.33 2004/06/03 14:28:39 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::lonsyllabus;
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::lonannounce;
38: use Apache::lonlocal;
39: use Apache::lonhtmlcommon;
40:
41: sub handler {
42: my $r = shift;
43: &Apache::loncommon::content_type($r,'text/html');
44: $r->send_http_header;
45: return OK if $r->header_only;
46:
47: # ------------------------------------------------------------ Print the screen
48: my $target=$ENV{'form.grade_target'};
49: if ($target ne 'tex') {
50: $r->print(<<ENDDOCUMENT);
51: <html>
52: <head>
53: <title>The LearningOnline Network with CAPA</title>
54: ENDDOCUMENT
55: } else {
56: $r->print(&Apache::lonprintout::print_latex_header($ENV{'form.latex_type'}));
57: }
58: my (undef,undef,$cdom,$cnum)=split(/\//,$r->uri);
59: # Is this even a course?
60: my $homeserver=&Apache::lonnet::homeserver($cnum,$cdom);
61: if ($homeserver eq 'no_host') {
62: $r->print('</head><body>'.&mt('No syllabus available').'</body></html>');
63: return OK;
64: }
65: # --------------------------------------------------------- The syllabus fields
66: my %syllabusfields=&Apache::lonlocal::texthash(
67: 'aaa_instructorinfo' => 'Instructor Information',
68: 'bbb_description' => 'Course Description',
69: 'ccc_prereq' => 'Prerequisites',
70: 'cdc_classhours' => 'Class Hours',
71: 'ddd_officehours' => 'Office Hours',
72: 'eee_helproom' => 'Helproom Hours',
73: 'efe_projectinfo' => 'Project Information',
74: 'fff_examinfo' => 'Exam Information',
75: 'fgf_deadlines' => 'Deadlines',
76: 'ggg_grading' => 'Grading Information',
77: 'hhh_readings' => 'Readings',
78: 'iii_coursepack' => 'Coursepack',
79: 'jjj_weblinks' => 'Web Links',
80: 'kkk_textbook' => 'Textbook',
81: 'lll_includeurl' => 'URLs To Include in Syllabus');
82:
83: # ------------------------------------------------------------ Get query string
84: &Apache::loncommon::get_unprocessed_cgi
85: ($ENV{'QUERY_STRING'},['forcestudent','register','forceedit']);
86: # ----------------------------------------------------- Force menu registration
87: my $addentries='';
88: if ($ENV{'form.register'}) {
89: $addentries=' onLoad="'.&Apache::lonmenu::loadevents().
90: '" onUnload="'.&Apache::lonmenu::unloadevents().'"';
91: $r->print(&Apache::lonmenu::registerurl(1));
92: }
93: # --------------------------------------------------------------- Force Student
94: my $forcestudent='';
95: if ($ENV{'form.forcestudent'}) { $forcestudent='student'; };
96: my $forceedit='';
97: if ($ENV{'form.forceedit'}) { $forceedit='edit'; }
98:
99: # ------------------------------------- There is such a course, get environment
100: my %courseenv=&Apache::lonnet::dump('environment',$cdom,$cnum);
101: if ($target ne 'tex') {
102: $r->print(&Apache::lonhtmlcommon::htmlareaheaders().
103: '</head>'.&Apache::loncommon::bodytag
104: ("Syllabus",$forcestudent,$addentries,'',$cdom,$ENV{'form.register'}));
105: $r->print('<h1>'.$courseenv{'description'}.'</h1><h3>'.
106: $Apache::lonnet::domaindescription{$cdom}.'</h3>');
107: } else {
108: $r->print('\noindent{\large\textbf{'.$courseenv{'description'}.'}}\\\\\\\\\textbf{'.
109: $Apache::lonnet::domaindescription{$cdom}.'}\\\\');
110: }
111: # -------------------------------------------------------------- Announcements?
112: $r->print(&Apache::lonannounce::showday(time,2,
113: &Apache::lonannounce::readcalendar($cdom.'_'.$cnum)));
114: # -------------------------------------------------------- Get course personnel
115: my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum);
116: if ($target ne 'tex') {
117: $r->print('<table border="2">');
118: } else {
119: $r->print('\begin{tabular}{|c|c|}\hline');
120: }
121: foreach (sort keys %coursepersonnel) {
122: if ($target ne 'tex') {
123: $r->print('<tr><td>'.$_.'</td><td>');
124: } else {
125: $r->print(' '.$_.'\\\\ ');
126: }
127: foreach (split(/\,/,$coursepersonnel{$_})) {
128: my ($puname,$pudom)=split(/\:/,$_);
129: if ($target ne 'tex') {
130: $r->print(' '.&Apache::loncommon::aboutmewrapper(
131: &Apache::loncommon::plainname($puname,
132: $pudom),$puname,$pudom));
133: } else {
134: $r->print(' '.&Apache::loncommon::plainname($puname,
135: $pudom).' ');
136: }
137: }
138: if ($target ne 'tex') {
139: $r->print('</td></tr>');
140: } else {
141: $r->print('\\\\ \hline');
142: }
143: }
144: if ($target ne 'tex') {
145: $r->print('</table>');
146: } else {
147: $r->print('\end{tabular}\\\\');
148: }
149: # ---------------------------------------------------------- Load syllabus info
150: my %syllabus=&Apache::lonnet::dump('syllabus',$cdom,$cnum);
151: my $allowed=0;
152: my $privileged=0;
153:
154: # This handler might be called anonymously ...
155: # ----------------------------------------------------- Only if not public call
156: if ($ENV{'user.environment'}) {
157: # does this user have privileges to post, etc?
158: if ($ENV{'request.course.id'}) {
159: $allowed=&Apache::lonnet::allowed('mdc',$ENV{'request.course.id'});
160: $privileged=$allowed;
161: if (($syllabus{'uploaded.lastmodified'}) && (!$forceedit)) {
162: $forcestudent='student';
163: }
164: if ($forcestudent or $target eq 'tex') { $allowed=0; }
165: }
166: if ($allowed) {
167: $r->print('<p>'.
168: &Apache::loncommon::help_open_topic('Uploaded_Templates_TextBoxes','Help with filling in text boxes').'</p><p>'.&mt('This syllabus can be publicly viewed at')
169: .' <tt>http://'.
170: $Apache::lonnet::hostname{$homeserver}.$r->uri.'</tt>'.
171: &Apache::loncommon::help_open_topic('Syllabus_ExtLink').'</p>'.
172: '<p><a href="'.$r->uri.'?forcestudent=1"><font size="+1">'.
173: &mt('Show Public View').'</font></a>'.
174: &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').
175: '</p>');
176: } elsif ($privileged) {
177: if ($target ne 'tex') {
178: $r->print('<p><a href="'.$r->uri.'?forceedit=1"><font size="+1">'.
179: &mt('Edit').'</font></a>');
180: }
181: }
182: if (($allowed) && ($ENV{'form.storesyl'})) {
183: foreach (keys %syllabusfields) {
184: my $field=$ENV{'form.'.$_};
185: chomp($field);
186: $field=~s/\s+$//s;
187: $field=~s/^\s+//s;
188: $field=~s/\<br\s*\/*\>$//s;
189: $field=&Apache::lonfeedback::clear_out_html($field,1);
190: $syllabus{$_}=$field;
191: if ($_ eq 'lll_includeurl') { # clean up included URLs
192: my $field='';
193: foreach (split(/\n/,$syllabus{$_})) {
194: my $url=$_;
195: # get rid of leading and trailing spaces
196: $url=~s/^\s+//;
197: $url=~s/\s+$//;
198: if ($url=~/^http\:\/\/([^\/]+)\/(.+)$/) {
199: my $remainder=$2;
200: # remove the hostname from internal URLs
201: foreach (keys %Apache::lonnet::hostname) {
202: if ($1=~/$Apache::lonnet::hostname{$_}/i) {
203: $url=$remainder;
204: }
205: }
206: }
207: # norm internal URLs
208: unless ($url=~/^http\:/) {
209: $url=&Apache::lonnet::clutter($url);
210: }
211: # re-assemble field
212: if ($url) {
213: $field.=$url."\n";
214: }
215: }
216: $syllabus{$_}=$field;
217: }
218: }
219: $syllabus{'uploaded.domain'}=$ENV{'user.domain'};
220: $syllabus{'uploaded.name'}=$ENV{'user.name'};
221: $syllabus{'uploaded.lastmodified'}=time;
222: &Apache::lonnet::put('syllabus',\%syllabus,$cdom,$cnum);
223: }
224: }
225: # ---------------------------------------------------------------- Get syllabus
226: if (($syllabus{'uploaded.lastmodified'}) || ($allowed)) {
227: my $lastmod=$syllabus{'uploaded.lastmodified'};
228: $lastmod=($lastmod?&Apache::lonlocal::locallocaltime($lastmod):&mt('never'));
229: my $who = &Apache::loncommon::aboutmewrapper(
230: &Apache::loncommon::plainname($syllabus{'uploaded.name'},
231: $syllabus{'uploaded.domain'}),$syllabus{'uploaded.name'},
232: $syllabus{'uploaded.domain'});
233: if ($target ne 'tex') {
234: $r->print('<table><tr><td>'.&mt('Last updated').':</td><td>'.
235: $lastmod.'</td><td>'.&mt('by').' '.$who.
236: '</td></tr></table><p>');
237: } else {
238: $r->print('\\\\ '.&mt('Last updated').': '.$lastmod.' '.&mt('by').'\\\\ '.
239: &Apache::loncommon::plainname($syllabus{'uploaded.name'},
240: $syllabus{'uploaded.domain'}).'\\\\');
241: }
242: if ($allowed) {
243: $r->print('<form method="post">'.
244: '<input type="hidden" name="forceedit" value="edit" />');
245: }
246: my @htmlids=();
247: foreach (sort keys %syllabusfields) {
248: if (($syllabus{$_}=~/\w/) || ($allowed)) {
249: my $message=$syllabus{$_};
250: if ($_ eq 'lll_includeurl') { # this is the "included" field
251: my $urls=$message;
252: $message='';
253: foreach my $filelink (split(/\n/,$urls)) {
254: my $output='';
255: # embed style?
256: my ($curfext)=($filelink=~/\.([^\.]+)$/);
257: my $embstyle=&Apache::loncommon::fileembstyle($curfext);
258: if (($embstyle eq 'ssi') || ($curfext=~/\/$/)) {
259: # make ssi call and remove everything but the body contents
260: $output=&Apache::lonnet::ssi_body($filelink);
261: } elsif ($embstyle eq 'img') {
262: # embed as an image
263: $output='<img src="'.$filelink.'" />';
264: }
265: $message.='<p>'.$output.'</p>';
266: }
267: if ($allowed) {
268: $r->print('<h3>'.$syllabusfields{$_}.
269: &Apache::loncommon::help_open_topic('Syllabus_URLs').'</h3>'.
270: '<p><a href="'.$r->uri.'?forcestudent=1"><font size="+1">'.&mt('Show Public View').'</font></a>'.
271: &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').'</p>');
272: } else {
273: $r->print($message);
274: }
275: } else {
276: $message=~s/\n/\<br \/\>/g;
277: $message
278: =~s/(https*\:\/\/[^\s]+)/\<a href=\"$1\"\>\<tt\>$1\<\/tt\>\<\/a\>/g;
279: $message=&Apache::lontexconvert::msgtexconverted($message);
280: if ($target ne 'tex') {
281: $r->print('<h3>'.$syllabusfields{$_}.'</h3><blockquote>'.
282: $message.'</blockquote>');
283: } else {
284: $r->print('\\\\\textbf{'.$syllabusfields{$_}.'}\\\\'.
285: &Apache::lonxml::xmlparse($r,'tex',$message).'\\\\');
286: }
287: push @htmlids,$_;
288: }
289: if ($allowed) {
290: $r->print(
291: '<br /><textarea cols="80" rows="12" name="'.$_.'" id="'.$_.'">'.
292: $syllabus{$_}.
293: '</textarea> <input type="submit" name="storesyl" value="Store" />');
294: }
295: }
296: }
297: if ($allowed) {
298: $r->print('</form>'.
299: &Apache::lonhtmlcommon::htmlareaselectactive(@htmlids));
300: }
301: if ($target ne 'tex') {$r->print('</p>');} else {$r->print('\\\\');}
302: } else {
303: $r->print('<p>No syllabus information provided.</p>');
304: }
305: if ($target ne 'tex') {$r->print('</body></html>');} else {$r->print('\end{document}');}
306: return OK;
307: }
308:
309: 1;
310: __END__
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