1: # The LearningOnline Network
2: # Syllabus
3: #
4: # $Id: lonsyllabus.pm,v 1.49 2006/03/21 21:25:33 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::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: my $target=$env{'form.grade_target'};
49: # --------------------------------------------------- Get course info from URL
50: my (undef,undef,$cdom,$cnum)=split(/\//,$r->uri);
51: # ------------------------------------------------------------ Get query string
52: &Apache::loncommon::get_unprocessed_cgi
53: ($ENV{'QUERY_STRING'},['forcestudent','register','forceedit','wrapperdisplay']);
54: # ----------------------------------------------------- Is this even a course?
55: my $homeserver=&Apache::lonnet::homeserver($cnum,$cdom);
56: if ($homeserver eq 'no_host') {
57: &Apache::loncommon::content_type($r,'text/html');
58: $r->send_http_header;
59: &Apache::loncommon::simple_error_page($r,'No syllabus available',
60: 'No syllabus available');
61: return OK;
62: }
63: # ------------------------------------- There is such a course, get environment
64: my %courseenv=&Apache::lonnet::dump('environment',$cdom,$cnum);
65:
66: # ------------------------------------------------------------ Print the screen
67:
68: my $rss_link =
69: &Apache::lonrss::rss_link('http://'.$ENV{'HTTP_HOST'}.'/public/'.$cdom.'/'.$cnum.'/Course_Announcements.rss');
70:
71: if ($target eq 'tex') {
72: $r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
73: }
74: # ----------------------------------------------------- Force menu registration
75: my $addentries='';
76: if ($env{'form.register'}) {
77: $addentries=' onLoad="'.&Apache::lonmenu::loadevents().
78: '" onUnload="'.&Apache::lonmenu::unloadevents().'"';
79: $r->print(&Apache::lonmenu::registerurl(1));
80: }
81: # -------------------------------------------------- Let's see who handles this
82: my $externalsyllabus=$courseenv{'externalsyllabus'};
83:
84: if ($externalsyllabus=~/\w/) {
85: $r->print(&Apache::loncommon::endheadtag());
86: if ($env{'form.wrapperdisplay'} eq 'menu') {
87: #
88: # Producing the menu buttons
89: #
90: $r->print('<body bgcolor="#FFFFFF">'.
91: &Apache::lonmenu::menubuttons(1,'web',1).
92: &Apache::loncommon::end_page());
93: } else {
94: if ($env{'browser.interface'} eq 'textual') {
95: #
96: # ssi-based rendering for text-based interface
97: #
98: $r->print('<body bgcolor="#FFFFFF">'.
99: &Apache::lonmenu::menubuttons(1).
100: &Apache::lonnet::ssi_body($externalsyllabus).
101: &Apache::loncommon::end_page());
102: } elsif ($env{'environment.remote'} eq 'off') {
103: #
104: # This is inline remote
105: #
106: $r->print(<<ENDDOCUMENTINL);
107: <frameset rows="180,*" border="0" $addentries>
108: <frame src="/public/$cdom/$cnum/syllabus?wrapperdisplay=menu">
109: <frame src="$externalsyllabus">
110: </frameset>
111: </html>
112: ENDDOCUMENTINL
113: } else {
114: #
115: # frame-based rendering for graphical interface
116: #
117: $r->print(<<ENDDOCUMENT);
118: <frameset rows="1,*" border="0" $addentries>
119: <frame src="/adm/rat/empty.html">
120: <frame src="$externalsyllabus">
121: </frameset>
122: </html>
123: ENDDOCUMENT
124: }
125: }
126: return OK;
127: }
128:
129: # ------------------------------ The buck stops here: internal syllabus display
130: # --------------------------------------------------------- The syllabus fields
131: my %syllabusfields=&Apache::lonlocal::texthash(
132: 'aaa_instructorinfo' => 'Instructor Information',
133: 'bbb_description' => 'Course Description',
134: 'ccc_prereq' => 'Prerequisites',
135: 'cdc_classhours' => 'Class Hours',
136: 'ddd_officehours' => 'Office Hours',
137: 'eee_helproom' => 'Helproom Hours',
138: 'efe_projectinfo' => 'Project Information',
139: 'fff_examinfo' => 'Exam Information',
140: 'fgf_deadlines' => 'Deadlines',
141: 'ggg_grading' => 'Grading Information',
142: 'hhh_readings' => 'Readings',
143: 'iii_coursepack' => 'Coursepack',
144: 'jjj_weblinks' => 'Web Links',
145: 'kkk_textbook' => 'Textbook',
146: 'lll_includeurl' => 'URLs To Include in Syllabus');
147: # --------------------------------------------------------------- Force Student
148: my $forcestudent='';
149: if ($env{'form.forcestudent'}) { $forcestudent='student'; };
150: my $forceedit='';
151: if ($env{'form.forceedit'}) { $forceedit='edit'; }
152:
153: # ----------------------------------------------------------------- Make header
154: if ($target ne 'tex') {
155: my $start_page =
156: &Apache::loncommon::start_page("Syllabus", $rss_link,
157: {'function' => $forcestudent,
158: 'add_entries' => $addentries,
159: 'domain' => $cdom,
160: 'force_register' =>
161: $env{'form.register'},});
162:
163: $r->print($start_page.'<h1>'.$courseenv{'description'}.'</h1><h3>'.
164: $Apache::lonnet::domaindescription{$cdom}.'</h3>');
165: } else {
166: $r->print('\noindent{\large\textbf{'.$courseenv{'description'}.'}}\\\\\\\\\textbf{'.
167: $Apache::lonnet::domaindescription{$cdom}.'}\\\\');
168: }
169: # -------------------------------------------------------------- Announcements?
170: my $day = &Apache::lonannounce::showday(time,2,
171: &Apache::lonannounce::readcalendar($cdom.'_'.$cnum));
172: if ($target ne 'tex') {
173: $r->print($day. &Apache::lonrss::advertisefeeds($cnum,$cdom));
174: } else {
175: $r->print(&Apache::lonxml::xmlparse($r,'tex',$day));
176: }
177:
178: # -------------------------------------------------------- Get course personnel
179: my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum);
180: if ($target ne 'tex') {
181: $r->print('<table border="2">');
182: } else {
183: $r->print('\begin{tabular}{|p{0.45\textwidth}|p{0.45\textwidth}|}\hline');
184: }
185: foreach my $element (sort keys %coursepersonnel) {
186: if ($target ne 'tex') {
187: $r->print('<tr><td>'.$element.'</td><td>');
188: } else {
189: $r->print(' '.&Apache::lonxml::xmlparse($r,'tex',$element).' & ');
190: }
191: foreach (split(/\,/,$coursepersonnel{$element})) {
192: my ($puname,$pudom)=split(/\:/,$_);
193: if ($target ne 'tex') {
194: $r->print(' '.&Apache::loncommon::aboutmewrapper(
195: &Apache::loncommon::plainname($puname,
196: $pudom),$puname,$pudom));
197: } else {
198: $r->print(' '.&Apache::loncommon::plainname($puname,
199: $pudom).' ');
200: }
201: }
202: if ($target ne 'tex') {
203: $r->print('</td></tr>');
204: } else {
205: $r->print('\\\\ \hline');
206: }
207: }
208: if ($target ne 'tex') {
209: $r->print('</table>');
210: } else {
211: $r->print('\end{tabular}\\\\');
212: }
213: # ---------------------------------------------------------- Load syllabus info
214: my %syllabus=&Apache::lonnet::dump('syllabus',$cdom,$cnum);
215: my $allowed=0;
216: my $privileged=0;
217:
218: # This handler might be called anonymously ...
219: # ----------------------------------------------------- Only if not public call
220: if ($env{'user.environment'}) {
221: # does this user have privileges to post, etc?
222: if ($env{'request.course.id'}) {
223: $allowed=&Apache::lonnet::allowed('mdc',$env{'request.course.id'});
224: $privileged=$allowed;
225: if (($syllabus{'uploaded.lastmodified'}) && (!$forceedit)) {
226: $forcestudent='student';
227: }
228: if ($forcestudent or $target eq 'tex') { $allowed=0; }
229: }
230: if ($allowed) {
231: $r->print('<p>'.
232: &Apache::loncommon::help_open_topic('Uploaded_Templates_TextBoxes','Help with filling in text boxes').'</p><p>'.&mt('This syllabus can be publicly viewed at')
233: .' <tt>http://'.
234: $Apache::lonnet::hostname{$homeserver}.$r->uri.'</tt>'.
235: &Apache::loncommon::help_open_topic('Syllabus_ExtLink').'</p>'.
236: '<p>'.&mt('You can specify an external URL as Syllabus in the [_1].','<a href="/adm/parmset?action=crsenv">'.&mt('Course Parameters').'</a>').'</p>'.
237: '<p><a href="'.$r->uri.'?forcestudent=1"><font size="+1">'.
238: &mt('Show Public View').'</font></a>'.
239: &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').
240: '</p>');
241: } elsif ($privileged) {
242: if ($target ne 'tex') {
243: $r->print('<p><a href="'.$r->uri.'?forceedit=1"><font size="+1">'.
244: &mt('Edit').'</font></a>');
245: }
246: }
247: if (($allowed) && ($env{'form.storesyl'})) {
248: foreach (keys %syllabusfields) {
249: my $field=$env{'form.'.$_};
250: chomp($field);
251: $field=~s/\s+$//s;
252: $field=~s/^\s+//s;
253: $field=~s/\<br\s*\/*\>$//s;
254: $field=&Apache::lonfeedback::clear_out_html($field,1);
255: $syllabus{$_}=$field;
256: if ($_ eq 'lll_includeurl') { # clean up included URLs
257: my $field='';
258: foreach (split(/\n/,$syllabus{$_})) {
259: my $url=$_;
260: # get rid of leading and trailing spaces
261: $url=~s/^\s+//;
262: $url=~s/\s+$//;
263: if ($url=~/^http\:\/\/([^\/]+)\/(.+)$/) {
264: my $remainder=$2;
265: # remove the hostname from internal URLs
266: foreach (keys %Apache::lonnet::hostname) {
267: if ($1=~/$Apache::lonnet::hostname{$_}/i) {
268: $url=$remainder;
269: }
270: }
271: }
272: # norm internal URLs
273: unless ($url=~/^http\:/) {
274: $url=&Apache::lonnet::clutter($url);
275: }
276: # re-assemble field
277: if ($url) {
278: $field.=$url."\n";
279: }
280: }
281: $syllabus{$_}=$field;
282: }
283: }
284: $syllabus{'uploaded.domain'}=$env{'user.domain'};
285: $syllabus{'uploaded.name'}=$env{'user.name'};
286: $syllabus{'uploaded.lastmodified'}=time;
287: &Apache::lonnet::put('syllabus',\%syllabus,$cdom,$cnum);
288: }
289: }
290: # ---------------------------------------------------------------- Get syllabus
291: if (($syllabus{'uploaded.lastmodified'}) || ($allowed)) {
292: my $lastmod=$syllabus{'uploaded.lastmodified'};
293: $lastmod=($lastmod?&Apache::lonlocal::locallocaltime($lastmod):&mt('never'));
294: my $who = &Apache::loncommon::aboutmewrapper(
295: &Apache::loncommon::plainname($syllabus{'uploaded.name'},
296: $syllabus{'uploaded.domain'}),$syllabus{'uploaded.name'},
297: $syllabus{'uploaded.domain'});
298: if ($target ne 'tex') {
299: $r->print('<table><tr><td>'.&mt('Last updated').':</td><td>'.
300: $lastmod.'</td><td>'.&mt('by').' '.$who.
301: '</td></tr></table><p>');
302: } else {
303: $r->print('\\\\ '.&mt('Last updated').': '.$lastmod.' '.&mt('by').'\\\\ '.
304: &Apache::loncommon::plainname($syllabus{'uploaded.name'},
305: $syllabus{'uploaded.domain'}).'\\\\');
306: }
307: if ($allowed) {
308: $r->print('<form method="post">'.
309: '<input type="hidden" name="forceedit" value="edit" />');
310: }
311: my @htmlids=();
312: foreach (sort keys %syllabusfields) {
313: if (($syllabus{$_}=~/\w/) || ($allowed)) {
314: my $message=$syllabus{$_};
315: if ($_ eq 'lll_includeurl') { # this is the "included" field
316: my $urls=$message;
317: $message='';
318: foreach my $filelink (split(/\n/,$urls)) {
319: my $output='';
320: # embed style?
321: my ($curfext)=($filelink=~/\.([^\.]+)$/);
322: my $embstyle=&Apache::loncommon::fileembstyle($curfext);
323: if (($embstyle eq 'ssi') || ($curfext=~/\/$/)) {
324: # make ssi call and remove everything but the body contents
325: $output=&Apache::lonnet::ssi_body($filelink);
326: } elsif ($embstyle eq 'img') {
327: # embed as an image
328: $output='<img src="'.$filelink.'" />';
329: }
330: if ($target ne 'tex') {
331: $message.='<p>'.$output.'</p>';
332: } else {
333: $message.=' '.&Apache::lonxml::xmlparse($r,'tex','<p>'.$output.'</p>').' ';
334: }
335: }
336: if ($allowed) {
337: $r->print('<h3>'.$syllabusfields{$_}.
338: &Apache::loncommon::help_open_topic('Syllabus_URLs').'</h3>'.
339: '<p><a href="'.$r->uri.'?forcestudent=1"><font size="+1">'.&mt('Show Public View').'</font></a>'.
340: &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').'</p>');
341: } else {
342: $r->print($message);
343: }
344: } else {
345: &Apache::lonfeedback::newline_to_br(\$message);
346: $message
347: =~s/(https*\:\/\/[^\s]+)/\<a href=\"$1\"\>\<tt\>$1\<\/tt\>\<\/a\>/g;
348: if ($allowed) {
349: $message=&Apache::lonspeller::markeduptext($message);
350: }
351: $message=&Apache::lontexconvert::msgtexconverted($message);
352: if ($target ne 'tex') {
353: $r->print('<h3>'.$syllabusfields{$_}.'</h3><blockquote>'.
354: $message.'</blockquote>');
355: } else {
356: $r->print('\\\\\textbf{'.$syllabusfields{$_}.'}\\\\'.
357: &Apache::lonxml::xmlparse($r,'tex',$message).'\\\\');
358: }
359: push @htmlids,$_;
360: }
361: if ($allowed) {
362: $r->print(
363: '<br /><textarea cols="80" rows="12" name="'.$_.'" id="'.$_.'">'.
364: $syllabus{$_}.
365: '</textarea> <input type="submit" name="storesyl" value="Store" />');
366: }
367: }
368: }
369: if ($allowed) {
370: $r->print('</form>'.
371: &Apache::lonhtmlcommon::htmlareaselectactive(@htmlids));
372: }
373: if ($target ne 'tex') {$r->print('</p>');} else {$r->print('\\\\');}
374: } else {
375: if ($target ne 'tex') {$r->print('<p>');} else {$r->print('\par ');}
376: $r->print('No syllabus information provided.');
377: if ($target ne 'tex') {$r->print('</p>');}
378: }
379: if ($target ne 'tex') {
380: $r->print(&Apache::loncommon::end_page());
381: } else {
382: $r->print('\end{document}');
383: }
384: return OK;
385: }
386:
387: 1;
388: __END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonsyllabus.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / interface