1: # The LearningOnline Network
2: # Syllabus
3: #
4: # $Id: lonsyllabus.pm,v 1.43 2005/11/17 22:36:37 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 $r = shift;
44: &Apache::loncommon::content_type($r,'text/html');
45: $r->send_http_header;
46: return OK if $r->header_only;
47:
48: # ------------------------------------------------------------ Print the screen
49: my $target=$env{'form.grade_target'};
50: my (undef,undef,$cdom,$cnum)=split(/\//,$r->uri);
51: my $feedurl='feed://'.$ENV{'HTTP_HOST'}.'/public/'.$cdom.'/'.$cnum.'/Course_Announcements.rss';
52: if ($target ne 'tex') {
53: my $html=&Apache::lonxml::xmlbegin();
54: $r->print(<<ENDDOCUMENT);
55: $html
56: <head>
57: <title>The LearningOnline Network with CAPA</title>
58: <link rel="alternate" type="application/rss+xml" title="Course Announcements" href="$feedurl" />
59: ENDDOCUMENT
60: } else {
61: $r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
62: }
63:
64: # Is this even a course?
65: my $homeserver=&Apache::lonnet::homeserver($cnum,$cdom);
66: if ($homeserver eq 'no_host') {
67: $r->print('</head><body>'.&mt('No syllabus available').'</body></html>');
68: return OK;
69: }
70: # --------------------------------------------------------- The syllabus fields
71: my %syllabusfields=&Apache::lonlocal::texthash(
72: 'aaa_instructorinfo' => 'Instructor Information',
73: 'bbb_description' => 'Course Description',
74: 'ccc_prereq' => 'Prerequisites',
75: 'cdc_classhours' => 'Class Hours',
76: 'ddd_officehours' => 'Office Hours',
77: 'eee_helproom' => 'Helproom Hours',
78: 'efe_projectinfo' => 'Project Information',
79: 'fff_examinfo' => 'Exam Information',
80: 'fgf_deadlines' => 'Deadlines',
81: 'ggg_grading' => 'Grading Information',
82: 'hhh_readings' => 'Readings',
83: 'iii_coursepack' => 'Coursepack',
84: 'jjj_weblinks' => 'Web Links',
85: 'kkk_textbook' => 'Textbook',
86: 'lll_includeurl' => 'URLs To Include in Syllabus');
87:
88: # ------------------------------------------------------------ Get query string
89: &Apache::loncommon::get_unprocessed_cgi
90: ($ENV{'QUERY_STRING'},['forcestudent','register','forceedit']);
91: # ----------------------------------------------------- Force menu registration
92: my $addentries='';
93: if ($env{'form.register'}) {
94: $addentries=' onLoad="'.&Apache::lonmenu::loadevents().
95: '" onUnload="'.&Apache::lonmenu::unloadevents().'"';
96: $r->print(&Apache::lonmenu::registerurl(1));
97: }
98: # --------------------------------------------------------------- Force Student
99: my $forcestudent='';
100: if ($env{'form.forcestudent'}) { $forcestudent='student'; };
101: my $forceedit='';
102: if ($env{'form.forceedit'}) { $forceedit='edit'; }
103:
104: # ------------------------------------- There is such a course, get environment
105: my %courseenv=&Apache::lonnet::dump('environment',$cdom,$cnum);
106: if ($target ne 'tex') {
107: $r->print(&Apache::lonhtmlcommon::htmlareaheaders().
108: '</head>'.&Apache::loncommon::bodytag
109: ("Syllabus",$forcestudent,$addentries,'',$cdom,$env{'form.register'}));
110: $r->print('<h1>'.$courseenv{'description'}.'</h1><h3>'.
111: $Apache::lonnet::domaindescription{$cdom}.'</h3>');
112: } else {
113: $r->print('\noindent{\large\textbf{'.$courseenv{'description'}.'}}\\\\\\\\\textbf{'.
114: $Apache::lonnet::domaindescription{$cdom}.'}\\\\');
115: }
116: # -------------------------------------------------------------- Announcements?
117: if ($target ne 'tex') {
118: $r->print(&Apache::lonannounce::showday(time,2,
119: &Apache::lonannounce::readcalendar($cdom.'_'.$cnum)).
120: '<p>'.&mt('Course Announcement RSS Feed').': '.
121: '<a href="'.$feedurl.'"><tt>'.$feedurl.'</tt></a></p>');
122: } else {
123: $r->print(&Apache::lonxml::xmlparse($r,'tex',
124: &Apache::lonannounce::showday(time,2,
125: &Apache::lonannounce::readcalendar($cdom.'_'.$cnum))));
126: }
127: # -------------------------------------------------------- Get course personnel
128: my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum);
129: if ($target ne 'tex') {
130: $r->print('<table border="2">');
131: } else {
132: $r->print('\begin{tabular}{|p{0.45\textwidth}|p{0.45\textwidth}|}\hline');
133: }
134: foreach my $element (sort keys %coursepersonnel) {
135: if ($target ne 'tex') {
136: $r->print('<tr><td>'.$element.'</td><td>');
137: } else {
138: $r->print(' '.&Apache::lonxml::xmlparse($r,'tex',$element).' & ');
139: }
140: foreach (split(/\,/,$coursepersonnel{$element})) {
141: my ($puname,$pudom)=split(/\:/,$_);
142: if ($target ne 'tex') {
143: $r->print(' '.&Apache::loncommon::aboutmewrapper(
144: &Apache::loncommon::plainname($puname,
145: $pudom),$puname,$pudom));
146: } else {
147: $r->print(' '.&Apache::loncommon::plainname($puname,
148: $pudom).' ');
149: }
150: }
151: if ($target ne 'tex') {
152: $r->print('</td></tr>');
153: } else {
154: $r->print('\\\\ \hline');
155: }
156: }
157: if ($target ne 'tex') {
158: $r->print('</table>');
159: } else {
160: $r->print('\end{tabular}\\\\');
161: }
162: # ---------------------------------------------------------- Load syllabus info
163: my %syllabus=&Apache::lonnet::dump('syllabus',$cdom,$cnum);
164: my $allowed=0;
165: my $privileged=0;
166:
167: # This handler might be called anonymously ...
168: # ----------------------------------------------------- Only if not public call
169: if ($env{'user.environment'}) {
170: # does this user have privileges to post, etc?
171: if ($env{'request.course.id'}) {
172: $allowed=&Apache::lonnet::allowed('mdc',$env{'request.course.id'});
173: $privileged=$allowed;
174: if (($syllabus{'uploaded.lastmodified'}) && (!$forceedit)) {
175: $forcestudent='student';
176: }
177: if ($forcestudent or $target eq 'tex') { $allowed=0; }
178: }
179: if ($allowed) {
180: $r->print('<p>'.
181: &Apache::loncommon::help_open_topic('Uploaded_Templates_TextBoxes','Help with filling in text boxes').'</p><p>'.&mt('This syllabus can be publicly viewed at')
182: .' <tt>http://'.
183: $Apache::lonnet::hostname{$homeserver}.$r->uri.'</tt>'.
184: &Apache::loncommon::help_open_topic('Syllabus_ExtLink').'</p>'.
185: '<p><a href="'.$r->uri.'?forcestudent=1"><font size="+1">'.
186: &mt('Show Public View').'</font></a>'.
187: &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').
188: '</p>');
189: } elsif ($privileged) {
190: if ($target ne 'tex') {
191: $r->print('<p><a href="'.$r->uri.'?forceedit=1"><font size="+1">'.
192: &mt('Edit').'</font></a>');
193: }
194: }
195: if (($allowed) && ($env{'form.storesyl'})) {
196: foreach (keys %syllabusfields) {
197: my $field=$env{'form.'.$_};
198: chomp($field);
199: $field=~s/\s+$//s;
200: $field=~s/^\s+//s;
201: $field=~s/\<br\s*\/*\>$//s;
202: $field=&Apache::lonfeedback::clear_out_html($field,1);
203: $syllabus{$_}=$field;
204: if ($_ eq 'lll_includeurl') { # clean up included URLs
205: my $field='';
206: foreach (split(/\n/,$syllabus{$_})) {
207: my $url=$_;
208: # get rid of leading and trailing spaces
209: $url=~s/^\s+//;
210: $url=~s/\s+$//;
211: if ($url=~/^http\:\/\/([^\/]+)\/(.+)$/) {
212: my $remainder=$2;
213: # remove the hostname from internal URLs
214: foreach (keys %Apache::lonnet::hostname) {
215: if ($1=~/$Apache::lonnet::hostname{$_}/i) {
216: $url=$remainder;
217: }
218: }
219: }
220: # norm internal URLs
221: unless ($url=~/^http\:/) {
222: $url=&Apache::lonnet::clutter($url);
223: }
224: # re-assemble field
225: if ($url) {
226: $field.=$url."\n";
227: }
228: }
229: $syllabus{$_}=$field;
230: }
231: }
232: $syllabus{'uploaded.domain'}=$env{'user.domain'};
233: $syllabus{'uploaded.name'}=$env{'user.name'};
234: $syllabus{'uploaded.lastmodified'}=time;
235: &Apache::lonnet::put('syllabus',\%syllabus,$cdom,$cnum);
236: }
237: }
238: # ---------------------------------------------------------------- Get syllabus
239: if (($syllabus{'uploaded.lastmodified'}) || ($allowed)) {
240: my $lastmod=$syllabus{'uploaded.lastmodified'};
241: $lastmod=($lastmod?&Apache::lonlocal::locallocaltime($lastmod):&mt('never'));
242: my $who = &Apache::loncommon::aboutmewrapper(
243: &Apache::loncommon::plainname($syllabus{'uploaded.name'},
244: $syllabus{'uploaded.domain'}),$syllabus{'uploaded.name'},
245: $syllabus{'uploaded.domain'});
246: if ($target ne 'tex') {
247: $r->print('<table><tr><td>'.&mt('Last updated').':</td><td>'.
248: $lastmod.'</td><td>'.&mt('by').' '.$who.
249: '</td></tr></table><p>');
250: } else {
251: $r->print('\\\\ '.&mt('Last updated').': '.$lastmod.' '.&mt('by').'\\\\ '.
252: &Apache::loncommon::plainname($syllabus{'uploaded.name'},
253: $syllabus{'uploaded.domain'}).'\\\\');
254: }
255: if ($allowed) {
256: $r->print('<form method="post">'.
257: '<input type="hidden" name="forceedit" value="edit" />');
258: }
259: my @htmlids=();
260: foreach (sort keys %syllabusfields) {
261: if (($syllabus{$_}=~/\w/) || ($allowed)) {
262: my $message=$syllabus{$_};
263: if ($_ eq 'lll_includeurl') { # this is the "included" field
264: my $urls=$message;
265: $message='';
266: foreach my $filelink (split(/\n/,$urls)) {
267: my $output='';
268: # embed style?
269: my ($curfext)=($filelink=~/\.([^\.]+)$/);
270: my $embstyle=&Apache::loncommon::fileembstyle($curfext);
271: if (($embstyle eq 'ssi') || ($curfext=~/\/$/)) {
272: # make ssi call and remove everything but the body contents
273: $output=&Apache::lonnet::ssi_body($filelink);
274: } elsif ($embstyle eq 'img') {
275: # embed as an image
276: $output='<img src="'.$filelink.'" />';
277: }
278: if ($target ne 'tex') {
279: $message.='<p>'.$output.'</p>';
280: } else {
281: $message.=' '.&Apache::lonxml::xmlparse($r,'tex','<p>'.$output.'</p>').' ';
282: }
283: }
284: if ($allowed) {
285: $r->print('<h3>'.$syllabusfields{$_}.
286: &Apache::loncommon::help_open_topic('Syllabus_URLs').'</h3>'.
287: '<p><a href="'.$r->uri.'?forcestudent=1"><font size="+1">'.&mt('Show Public View').'</font></a>'.
288: &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').'</p>');
289: } else {
290: $r->print($message);
291: }
292: } else {
293: &Apache::lonfeedback::newline_to_br(\$message);
294: $message
295: =~s/(https*\:\/\/[^\s]+)/\<a href=\"$1\"\>\<tt\>$1\<\/tt\>\<\/a\>/g;
296: if ($allowed) {
297: $message=&Apache::lonspeller::markeduptext($message);
298: }
299: $message=&Apache::lontexconvert::msgtexconverted($message);
300: if ($target ne 'tex') {
301: $r->print('<h3>'.$syllabusfields{$_}.'</h3><blockquote>'.
302: $message.'</blockquote>');
303: } else {
304: $r->print('\\\\\textbf{'.$syllabusfields{$_}.'}\\\\'.
305: &Apache::lonxml::xmlparse($r,'tex',$message).'\\\\');
306: }
307: push @htmlids,$_;
308: }
309: if ($allowed) {
310: $r->print(
311: '<br /><textarea cols="80" rows="12" name="'.$_.'" id="'.$_.'">'.
312: $syllabus{$_}.
313: '</textarea> <input type="submit" name="storesyl" value="Store" />');
314: }
315: }
316: }
317: if ($allowed) {
318: $r->print('</form>'.
319: &Apache::lonhtmlcommon::htmlareaselectactive(@htmlids));
320: }
321: if ($target ne 'tex') {$r->print('</p>');} else {$r->print('\\\\');}
322: } else {
323: if ($target ne 'tex') {$r->print('<p>');} else {$r->print('\par ');}
324: $r->print('No syllabus information provided.');
325: if ($target ne 'tex') {$r->print('</p>');}
326: }
327: if ($target ne 'tex') {$r->print('</body></html>');} else {$r->print('\end{document}');}
328: return OK;
329: }
330:
331: 1;
332: __END__
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