1: # The LearningOnline Network
2: # Syllabus
3: #
4: # $Id: lonsyllabus.pm,v 1.52 2006/05/11 16:29:20 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: 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: # -------------------------------------------------- Let's see who handles this
75: my $externalsyllabus=$courseenv{'externalsyllabus'};
76:
77: if ($externalsyllabus=~/\w/) {
78:
79: if ($env{'form.wrapperdisplay'} eq 'menu') {
80: $r->print(&Apache::lonwrapper::simple_menu());
81: } else {
82: $r->print(&Apache::lonwrapper::wrapper("/public/$cdom/$cnum/syllabus?wrapperdisplay=menu",
83: $externalsyllabus));
84: }
85: return OK;
86: }
87:
88: # ------------------------------ The buck stops here: internal syllabus display
89: # --------------------------------------------------------- The syllabus fields
90: my %syllabusfields=&Apache::lonlocal::texthash(
91: 'aaa_instructorinfo' => 'Instructor Information',
92: 'bbb_description' => 'Course Description',
93: 'ccc_prereq' => 'Prerequisites',
94: 'cdc_classhours' => 'Class Hours',
95: 'ddd_officehours' => 'Office Hours',
96: 'eee_helproom' => 'Helproom Hours',
97: 'efe_projectinfo' => 'Project Information',
98: 'fff_examinfo' => 'Exam Information',
99: 'fgf_deadlines' => 'Deadlines',
100: 'ggg_grading' => 'Grading Information',
101: 'hhh_readings' => 'Readings',
102: 'iii_coursepack' => 'Coursepack',
103: 'jjj_weblinks' => 'Web Links',
104: 'kkk_textbook' => 'Textbook',
105: 'lll_includeurl' => 'URLs To Include in Syllabus');
106: # --------------------------------------------------------------- Force Student
107: my $forcestudent='';
108: if ($env{'form.forcestudent'}) { $forcestudent='student'; };
109: my $forceedit='';
110: if ($env{'form.forceedit'}) { $forceedit='edit'; }
111:
112: # ----------------------------------------------------------------- Make header
113: if ($target ne 'tex') {
114: my $start_page =
115: &Apache::loncommon::start_page("Syllabus", $rss_link,
116: {'function' => $forcestudent,
117: 'domain' => $cdom,
118: 'force_register' =>
119: $env{'form.register'},});
120:
121: $r->print($start_page.'<h1>'.$courseenv{'description'}.'</h1><h3>'.
122: $Apache::lonnet::domaindescription{$cdom}.'</h3>');
123: } else {
124: $r->print('\noindent{\large\textbf{'.$courseenv{'description'}.'}}\\\\\\\\\textbf{'.
125: $Apache::lonnet::domaindescription{$cdom}.'}\\\\');
126: }
127: # -------------------------------------------------------------- Announcements?
128: my $day = &Apache::lonannounce::showday(time,2,
129: &Apache::lonannounce::readcalendar($cdom.'_'.$cnum));
130: if ($target ne 'tex') {
131: $r->print($day. &Apache::lonrss::advertisefeeds($cnum,$cdom,$forceedit));
132: } else {
133: $r->print(&Apache::lonxml::xmlparse($r,'tex',$day));
134: }
135:
136: # -------------------------------------------------------- Get course personnel
137: my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum);
138: if ($target ne 'tex') {
139: $r->print('<table border="2">');
140: } else {
141: $r->print('\begin{tabular}{|p{0.45\textwidth}|p{0.45\textwidth}|}\hline');
142: }
143: foreach my $element (sort keys %coursepersonnel) {
144: if ($target ne 'tex') {
145: $r->print('<tr><td>'.$element.'</td><td>');
146: } else {
147: $r->print(' '.&Apache::lonxml::xmlparse($r,'tex',$element).' & ');
148: }
149: foreach (split(/\,/,$coursepersonnel{$element})) {
150: my ($puname,$pudom)=split(/\:/,$_);
151: if ($target ne 'tex') {
152: $r->print(' '.&Apache::loncommon::aboutmewrapper(
153: &Apache::loncommon::plainname($puname,
154: $pudom),$puname,$pudom));
155: } else {
156: $r->print(' '.&Apache::loncommon::plainname($puname,
157: $pudom).' ');
158: }
159: }
160: if ($target ne 'tex') {
161: $r->print('</td></tr>');
162: } else {
163: $r->print('\\\\ \hline');
164: }
165: }
166: if ($target ne 'tex') {
167: $r->print('</table>');
168: } else {
169: $r->print('\end{tabular}\\\\');
170: }
171: # ---------------------------------------------------------- Load syllabus info
172: my %syllabus=&Apache::lonnet::dump('syllabus',$cdom,$cnum);
173: my $allowed=0;
174: my $privileged=0;
175:
176: # This handler might be called anonymously ...
177: # ----------------------------------------------------- Only if not public call
178: if ($env{'user.environment'}) {
179: # does this user have privileges to post, etc?
180: if ($env{'request.course.id'}) {
181: $allowed=&Apache::lonnet::allowed('mdc',$env{'request.course.id'});
182: $privileged=$allowed;
183: if (($syllabus{'uploaded.lastmodified'}) && (!$forceedit)) {
184: $forcestudent='student';
185: }
186: if ($forcestudent or $target eq 'tex') { $allowed=0; }
187: }
188: if ($allowed) {
189: $r->print('<p>'.
190: &Apache::loncommon::help_open_topic('Uploaded_Templates_TextBoxes','Help with filling in text boxes').'</p><p>'.&mt('This syllabus can be publicly viewed at')
191: .' <tt>http://'.
192: $Apache::lonnet::hostname{$homeserver}.$r->uri.'</tt>'.
193: &Apache::loncommon::help_open_topic('Syllabus_ExtLink').'</p>'.
194: '<p>'.&mt('You can specify an external URL as Syllabus in the [_1].','<a href="/adm/parmset?action=crsenv">'.&mt('Course Parameters').'</a>').'</p>'.
195: '<p><a href="'.$r->uri.'?forcestudent=1"><font size="+1">'.
196: &mt('Show Public View').'</font></a>'.
197: &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').
198: '</p>');
199: } elsif ($privileged) {
200: if ($target ne 'tex') {
201: $r->print('<p><a href="'.$r->uri.'?forceedit=1"><font size="+1">'.
202: &mt('Edit').'</font></a>');
203: }
204: }
205: if (($allowed) && ($env{'form.storesyl'})) {
206: foreach (keys %syllabusfields) {
207: my $field=$env{'form.'.$_};
208: chomp($field);
209: $field=~s/\s+$//s;
210: $field=~s/^\s+//s;
211: $field=~s/\<br\s*\/*\>$//s;
212: $field=&Apache::lonfeedback::clear_out_html($field,1);
213: $syllabus{$_}=$field;
214: if ($_ eq 'lll_includeurl') { # clean up included URLs
215: my $field='';
216: foreach (split(/\n/,$syllabus{$_})) {
217: my $url=$_;
218: # get rid of leading and trailing spaces
219: $url=~s/^\s+//;
220: $url=~s/\s+$//;
221: if ($url=~/^http\:\/\/([^\/]+)\/(.+)$/) {
222: my $remainder=$2;
223: # remove the hostname from internal URLs
224: foreach (keys %Apache::lonnet::hostname) {
225: if ($1=~/$Apache::lonnet::hostname{$_}/i) {
226: $url=$remainder;
227: }
228: }
229: }
230: # norm internal URLs
231: unless ($url=~/^http\:/) {
232: $url=&Apache::lonnet::clutter($url);
233: }
234: # re-assemble field
235: if ($url) {
236: $field.=$url."\n";
237: }
238: }
239: $syllabus{$_}=$field;
240: }
241: }
242: $syllabus{'uploaded.domain'}=$env{'user.domain'};
243: $syllabus{'uploaded.name'}=$env{'user.name'};
244: $syllabus{'uploaded.lastmodified'}=time;
245: &Apache::lonnet::put('syllabus',\%syllabus,$cdom,$cnum);
246: }
247: }
248: # ---------------------------------------------------------------- Get syllabus
249: if (($syllabus{'uploaded.lastmodified'}) || ($allowed)) {
250: my $lastmod=$syllabus{'uploaded.lastmodified'};
251: $lastmod=($lastmod?&Apache::lonlocal::locallocaltime($lastmod):&mt('never'));
252: my $who = &Apache::loncommon::aboutmewrapper(
253: &Apache::loncommon::plainname($syllabus{'uploaded.name'},
254: $syllabus{'uploaded.domain'}),$syllabus{'uploaded.name'},
255: $syllabus{'uploaded.domain'});
256: if ($target ne 'tex') {
257: $r->print('<table><tr><td>'.&mt('Last updated').':</td><td>'.
258: $lastmod.'</td><td>'.&mt('by').' '.$who.
259: '</td></tr></table><p>');
260: } else {
261: $r->print('\\\\ '.&mt('Last updated').': '.$lastmod.' '.&mt('by').'\\\\ '.
262: &Apache::loncommon::plainname($syllabus{'uploaded.name'},
263: $syllabus{'uploaded.domain'}).'\\\\');
264: }
265: if ($allowed) {
266: $r->print('<form method="post">'.
267: '<input type="hidden" name="forceedit" value="edit" />');
268: }
269: my @htmlids=();
270: foreach (sort keys %syllabusfields) {
271: if (($syllabus{$_}=~/\w/) || ($allowed)) {
272: my $message=$syllabus{$_};
273: if ($_ eq 'lll_includeurl') { # this is the "included" field
274: my $urls=$message;
275: $message='';
276: foreach my $filelink (split(/\n/,$urls)) {
277: my $output='';
278: # embed style?
279: my ($curfext)=($filelink=~/\.([^\.]+)$/);
280: my $embstyle=&Apache::loncommon::fileembstyle($curfext);
281: if (($embstyle eq 'ssi') || ($curfext=~/\/$/)) {
282: # make ssi call and remove everything but the body contents
283: $output=&Apache::lonnet::ssi_body($filelink);
284: } elsif ($embstyle eq 'img') {
285: # embed as an image
286: $output='<img src="'.$filelink.'" />';
287: }
288: if ($target ne 'tex') {
289: $message.='<p>'.$output.'</p>';
290: } else {
291: $message.=' '.&Apache::lonxml::xmlparse($r,'tex','<p>'.$output.'</p>').' ';
292: }
293: }
294: if ($allowed) {
295: $r->print('<h3>'.$syllabusfields{$_}.
296: &Apache::loncommon::help_open_topic('Syllabus_URLs').'</h3>'.
297: '<p><a href="'.$r->uri.'?forcestudent=1"><font size="+1">'.&mt('Show Public View').'</font></a>'.
298: &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView').'</p>');
299: } else {
300: $r->print($message);
301: }
302: } else {
303: &Apache::lonfeedback::newline_to_br(\$message);
304: $message
305: =~s/(https*\:\/\/[^\s]+)/\<a href=\"$1\"\>\<tt\>$1\<\/tt\>\<\/a\>/g;
306: if ($allowed) {
307: $message=&Apache::lonspeller::markeduptext($message);
308: }
309: $message=&Apache::lontexconvert::msgtexconverted($message);
310: if ($target ne 'tex') {
311: $r->print('<h3>'.$syllabusfields{$_}.'</h3><blockquote>'.
312: $message.'</blockquote>');
313: } else {
314: $r->print('\\\\\textbf{'.$syllabusfields{$_}.'}\\\\'.
315: &Apache::lonxml::xmlparse($r,'tex',$message).'\\\\');
316: }
317: push @htmlids,$_;
318: }
319: if ($allowed) {
320: $r->print(
321: '<br /><textarea cols="80" rows="12" name="'.$_.'" id="'.$_.'">'.
322: $syllabus{$_}.
323: '</textarea> <input type="submit" name="storesyl" value="Store" />');
324: }
325: }
326: }
327: if ($allowed) {
328: $r->print('</form>'.
329: &Apache::lonhtmlcommon::htmlareaselectactive(@htmlids));
330: }
331: if ($target ne 'tex') {$r->print('</p>');} else {$r->print('\\\\');}
332: } else {
333: if ($target ne 'tex') {$r->print('<p>');} else {$r->print('\par ');}
334: $r->print('No syllabus information provided.');
335: if ($target ne 'tex') {$r->print('</p>');}
336: }
337: if ($target ne 'tex') {
338: $r->print(&Apache::loncommon::end_page());
339: } else {
340: $r->print('\end{document}');
341: }
342: return OK;
343: }
344:
345: 1;
346: __END__
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