1: # The LearningOnline Network
2: # Syllabus
3: #
4: # $Id: lonsyllabus.pm,v 1.45 2006/03/06 22:17:48 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: use Apache::lonspeller();
41:
42: sub handler {
43: my $r = shift;
44:
45: # --------------------------------------------------- Get course info from URL
46: my (undef,undef,$cdom,$cnum)=split(/\//,$r->uri);
47: # ----------------------------------------------------- Is this even a course?
48: my $homeserver=&Apache::lonnet::homeserver($cnum,$cdom);
49: if ($homeserver eq 'no_host') {
50: &Apache::loncommon::content_type($r,'text/html');
51: $r->send_http_header;
52: $r->print('<html><body>'.&mt('No syllabus available').'</body></html>');
53: return OK;
54: }
55: # ------------------------------------- There is such a course, get environment
56: my %courseenv=&Apache::lonnet::dump('environment',$cdom,$cnum);
57:
58: &Apache::loncommon::content_type($r,'text/html');
59: $r->send_http_header;
60: return OK if $r->header_only;
61: # ------------------------------------------------------------ Print the screen
62: my $target=$env{'form.grade_target'};
63: my $feedurl='feed://'.$ENV{'HTTP_HOST'}.'/public/'.$cdom.'/'.$cnum.'/Course_Announcements.rss';
64: if ($target ne 'tex') {
65: my $html=&Apache::lonxml::xmlbegin();
66: $r->print(<<ENDDOCUMENT);
67: $html
68: <head>
69: <title>The LearningOnline Network with CAPA</title>
70: <link rel="alternate" type="application/rss+xml" title="Course Announcements" href="$feedurl" />
71: ENDDOCUMENT
72: } else {
73: $r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
74: }
75:
76: # --------------------------------------------------------- The syllabus fields
77: my %syllabusfields=&Apache::lonlocal::texthash(
78: 'aaa_instructorinfo' => 'Instructor Information',
79: 'bbb_description' => 'Course Description',
80: 'ccc_prereq' => 'Prerequisites',
81: 'cdc_classhours' => 'Class Hours',
82: 'ddd_officehours' => 'Office Hours',
83: 'eee_helproom' => 'Helproom Hours',
84: 'efe_projectinfo' => 'Project Information',
85: 'fff_examinfo' => 'Exam Information',
86: 'fgf_deadlines' => 'Deadlines',
87: 'ggg_grading' => 'Grading Information',
88: 'hhh_readings' => 'Readings',
89: 'iii_coursepack' => 'Coursepack',
90: 'jjj_weblinks' => 'Web Links',
91: 'kkk_textbook' => 'Textbook',
92: 'lll_includeurl' => 'URLs To Include in Syllabus');
93:
94: # ------------------------------------------------------------ Get query string
95: &Apache::loncommon::get_unprocessed_cgi
96: ($ENV{'QUERY_STRING'},['forcestudent','register','forceedit']);
97: # ----------------------------------------------------- Force menu registration
98: my $addentries='';
99: if ($env{'form.register'}) {
100: $addentries=' onLoad="'.&Apache::lonmenu::loadevents().
101: '" onUnload="'.&Apache::lonmenu::unloadevents().'"';
102: $r->print(&Apache::lonmenu::registerurl(1));
103: }
104: # --------------------------------------------------------------- Force Student
105: my $forcestudent='';
106: if ($env{'form.forcestudent'}) { $forcestudent='student'; };
107: my $forceedit='';
108: if ($env{'form.forceedit'}) { $forceedit='edit'; }
109:
110: # ----------------------------------------------------------------- Make header
111: if ($target ne 'tex') {
112: $r->print(&Apache::lonhtmlcommon::htmlareaheaders().
113: '</head>'.&Apache::loncommon::bodytag
114: ("Syllabus",$forcestudent,$addentries,'',$cdom,$env{'form.register'}));
115: $r->print('<h1>'.$courseenv{'description'}.'</h1><h3>'.
116: $Apache::lonnet::domaindescription{$cdom}.'</h3>');
117: } else {
118: $r->print('\noindent{\large\textbf{'.$courseenv{'description'}.'}}\\\\\\\\\textbf{'.
119: $Apache::lonnet::domaindescription{$cdom}.'}\\\\');
120: }
121: # -------------------------------------------------------------- Announcements?
122: if ($target ne 'tex') {
123: $r->print(&Apache::lonannounce::showday(time,2,
124: &Apache::lonannounce::readcalendar($cdom.'_'.$cnum)).
125: &Apache::lonrss::advertisefeeds($cnum,$cdom));
126: } else {
127: $r->print(&Apache::lonxml::xmlparse($r,'tex',
128: &Apache::lonannounce::showday(time,2,
129: &Apache::lonannounce::readcalendar($cdom.'_'.$cnum))));
130: }
131: # -------------------------------------------------------- Get course personnel
132: my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum);
133: if ($target ne 'tex') {
134: $r->print('<table border="2">');
135: } else {
136: $r->print('\begin{tabular}{|p{0.45\textwidth}|p{0.45\textwidth}|}\hline');
137: }
138: foreach my $element (sort keys %coursepersonnel) {
139: if ($target ne 'tex') {
140: $r->print('<tr><td>'.$element.'</td><td>');
141: } else {
142: $r->print(' '.&Apache::lonxml::xmlparse($r,'tex',$element).' & ');
143: }
144: foreach (split(/\,/,$coursepersonnel{$element})) {
145: my ($puname,$pudom)=split(/\:/,$_);
146: if ($target ne 'tex') {
147: $r->print(' '.&Apache::loncommon::aboutmewrapper(
148: &Apache::loncommon::plainname($puname,
149: $pudom),$puname,$pudom));
150: } else {
151: $r->print(' '.&Apache::loncommon::plainname($puname,
152: $pudom).' ');
153: }
154: }
155: if ($target ne 'tex') {
156: $r->print('</td></tr>');
157: } else {
158: $r->print('\\\\ \hline');
159: }
160: }
161: if ($target ne 'tex') {
162: $r->print('</table>');
163: } else {
164: $r->print('\end{tabular}\\\\');
165: }
166: # ---------------------------------------------------------- Load syllabus info
167: my %syllabus=&Apache::lonnet::dump('syllabus',$cdom,$cnum);
168: my $allowed=0;
169: my $privileged=0;
170:
171: # This handler might be called anonymously ...
172: # ----------------------------------------------------- Only if not public call
173: if ($env{'user.environment'}) {
174: # does this user have privileges to post, etc?
175: if ($env{'request.course.id'}) {
176: $allowed=&Apache::lonnet::allowed('mdc',$env{'request.course.id'});
177: $privileged=$allowed;
178: if (($syllabus{'uploaded.lastmodified'}) && (!$forceedit)) {
179: $forcestudent='student';
180: }
181: if ($forcestudent or $target eq 'tex') { $allowed=0; }
182: }
183: if ($allowed) {
184: $r->print('<p>'.
185: &Apache::loncommon::help_open_topic('Uploaded_Templates_TextBoxes','Help with filling in text boxes').'</p><p>'.&mt('This syllabus can be publicly viewed at')
186: .' <tt>http://'.
187: $Apache::lonnet::hostname{$homeserver}.$r->uri.'</tt>'.
188: &Apache::loncommon::help_open_topic('Syllabus_ExtLink').'</p>'.
189: '<p><a href="'.$r->uri.'?forcestudent=1"><font size="+1">'.
190: &mt('Show Public View').'</font></a>'.
191: &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').
192: '</p>');
193: } elsif ($privileged) {
194: if ($target ne 'tex') {
195: $r->print('<p><a href="'.$r->uri.'?forceedit=1"><font size="+1">'.
196: &mt('Edit').'</font></a>');
197: }
198: }
199: if (($allowed) && ($env{'form.storesyl'})) {
200: foreach (keys %syllabusfields) {
201: my $field=$env{'form.'.$_};
202: chomp($field);
203: $field=~s/\s+$//s;
204: $field=~s/^\s+//s;
205: $field=~s/\<br\s*\/*\>$//s;
206: $field=&Apache::lonfeedback::clear_out_html($field,1);
207: $syllabus{$_}=$field;
208: if ($_ eq 'lll_includeurl') { # clean up included URLs
209: my $field='';
210: foreach (split(/\n/,$syllabus{$_})) {
211: my $url=$_;
212: # get rid of leading and trailing spaces
213: $url=~s/^\s+//;
214: $url=~s/\s+$//;
215: if ($url=~/^http\:\/\/([^\/]+)\/(.+)$/) {
216: my $remainder=$2;
217: # remove the hostname from internal URLs
218: foreach (keys %Apache::lonnet::hostname) {
219: if ($1=~/$Apache::lonnet::hostname{$_}/i) {
220: $url=$remainder;
221: }
222: }
223: }
224: # norm internal URLs
225: unless ($url=~/^http\:/) {
226: $url=&Apache::lonnet::clutter($url);
227: }
228: # re-assemble field
229: if ($url) {
230: $field.=$url."\n";
231: }
232: }
233: $syllabus{$_}=$field;
234: }
235: }
236: $syllabus{'uploaded.domain'}=$env{'user.domain'};
237: $syllabus{'uploaded.name'}=$env{'user.name'};
238: $syllabus{'uploaded.lastmodified'}=time;
239: &Apache::lonnet::put('syllabus',\%syllabus,$cdom,$cnum);
240: }
241: }
242: # ---------------------------------------------------------------- Get syllabus
243: if (($syllabus{'uploaded.lastmodified'}) || ($allowed)) {
244: my $lastmod=$syllabus{'uploaded.lastmodified'};
245: $lastmod=($lastmod?&Apache::lonlocal::locallocaltime($lastmod):&mt('never'));
246: my $who = &Apache::loncommon::aboutmewrapper(
247: &Apache::loncommon::plainname($syllabus{'uploaded.name'},
248: $syllabus{'uploaded.domain'}),$syllabus{'uploaded.name'},
249: $syllabus{'uploaded.domain'});
250: if ($target ne 'tex') {
251: $r->print('<table><tr><td>'.&mt('Last updated').':</td><td>'.
252: $lastmod.'</td><td>'.&mt('by').' '.$who.
253: '</td></tr></table><p>');
254: } else {
255: $r->print('\\\\ '.&mt('Last updated').': '.$lastmod.' '.&mt('by').'\\\\ '.
256: &Apache::loncommon::plainname($syllabus{'uploaded.name'},
257: $syllabus{'uploaded.domain'}).'\\\\');
258: }
259: if ($allowed) {
260: $r->print('<form method="post">'.
261: '<input type="hidden" name="forceedit" value="edit" />');
262: }
263: my @htmlids=();
264: foreach (sort keys %syllabusfields) {
265: if (($syllabus{$_}=~/\w/) || ($allowed)) {
266: my $message=$syllabus{$_};
267: if ($_ eq 'lll_includeurl') { # this is the "included" field
268: my $urls=$message;
269: $message='';
270: foreach my $filelink (split(/\n/,$urls)) {
271: my $output='';
272: # embed style?
273: my ($curfext)=($filelink=~/\.([^\.]+)$/);
274: my $embstyle=&Apache::loncommon::fileembstyle($curfext);
275: if (($embstyle eq 'ssi') || ($curfext=~/\/$/)) {
276: # make ssi call and remove everything but the body contents
277: $output=&Apache::lonnet::ssi_body($filelink);
278: } elsif ($embstyle eq 'img') {
279: # embed as an image
280: $output='<img src="'.$filelink.'" />';
281: }
282: if ($target ne 'tex') {
283: $message.='<p>'.$output.'</p>';
284: } else {
285: $message.=' '.&Apache::lonxml::xmlparse($r,'tex','<p>'.$output.'</p>').' ';
286: }
287: }
288: if ($allowed) {
289: $r->print('<h3>'.$syllabusfields{$_}.
290: &Apache::loncommon::help_open_topic('Syllabus_URLs').'</h3>'.
291: '<p><a href="'.$r->uri.'?forcestudent=1"><font size="+1">'.&mt('Show Public View').'</font></a>'.
292: &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').'</p>');
293: } else {
294: $r->print($message);
295: }
296: } else {
297: &Apache::lonfeedback::newline_to_br(\$message);
298: $message
299: =~s/(https*\:\/\/[^\s]+)/\<a href=\"$1\"\>\<tt\>$1\<\/tt\>\<\/a\>/g;
300: if ($allowed) {
301: $message=&Apache::lonspeller::markeduptext($message);
302: }
303: $message=&Apache::lontexconvert::msgtexconverted($message);
304: if ($target ne 'tex') {
305: $r->print('<h3>'.$syllabusfields{$_}.'</h3><blockquote>'.
306: $message.'</blockquote>');
307: } else {
308: $r->print('\\\\\textbf{'.$syllabusfields{$_}.'}\\\\'.
309: &Apache::lonxml::xmlparse($r,'tex',$message).'\\\\');
310: }
311: push @htmlids,$_;
312: }
313: if ($allowed) {
314: $r->print(
315: '<br /><textarea cols="80" rows="12" name="'.$_.'" id="'.$_.'">'.
316: $syllabus{$_}.
317: '</textarea> <input type="submit" name="storesyl" value="Store" />');
318: }
319: }
320: }
321: if ($allowed) {
322: $r->print('</form>'.
323: &Apache::lonhtmlcommon::htmlareaselectactive(@htmlids));
324: }
325: if ($target ne 'tex') {$r->print('</p>');} else {$r->print('\\\\');}
326: } else {
327: if ($target ne 'tex') {$r->print('<p>');} else {$r->print('\par ');}
328: $r->print('No syllabus information provided.');
329: if ($target ne 'tex') {$r->print('</p>');}
330: }
331: if ($target ne 'tex') {$r->print('</body></html>');} else {$r->print('\end{document}');}
332: return OK;
333: }
334:
335: 1;
336: __END__
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