1: # The LearningOnline Network
2: # Syllabus
3: #
4: # $Id: lonsyllabus.pm,v 1.78 2009/02/19 18:55:53 neumanie 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::lontemplate;
33: use Apache::Constants qw(:common);
34: use Apache::loncommon;
35: use Apache::lonnet;
36: use Apache::lontexconvert;
37: use Apache::lonfeedback;
38: use Apache::lonannounce;
39: use Apache::lonlocal;
40: use Apache::lonhtmlcommon;
41: use Apache::lonspeller();
42: use HTML::Entities();
43:
44: sub handler {
45: my $r = shift;
46: &Apache::loncommon::content_type($r,'text/html');
47: $r->send_http_header;
48: return OK if $r->header_only;
49:
50: my $target=$env{'form.grade_target'};
51: # --------------------------------------------------- Get course info from URL
52: my (undef,undef,$cdom,$cnum)=split(/\//,$r->uri);
53: # ------------------------------------------------------------ Get query string
54: &Apache::loncommon::get_unprocessed_cgi
55: ($ENV{'QUERY_STRING'},['forcestudent','register','forceedit','wrapperdisplay']);
56: # ----------------------------------------------------- Is this even a course?
57: my $homeserver=&Apache::lonnet::homeserver($cnum,$cdom);
58: if ($homeserver eq 'no_host') {
59: &Apache::loncommon::content_type($r,'text/html');
60: $r->send_http_header;
61: &Apache::loncommon::simple_error_page($r,'No syllabus available',
62: 'No syllabus available');
63: return OK;
64: }
65: # ------------------------------------- There is such a course, get environment
66: my %courseenv=&Apache::lonnet::dump('environment',$cdom,$cnum);
67:
68: # ------------------------------------------------------------ Print the screen
69:
70: if ($target eq 'tex') {
71: $r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
72: }
73: # -------------------------------------------------- Let's see who handles this
74: my $externalsyllabus=$courseenv{'externalsyllabus'};
75:
76: if ($externalsyllabus=~/\w/) {
77:
78: if ($env{'form.wrapperdisplay'} eq 'menu') {
79: $r->print(&Apache::lonwrapper::simple_menu());
80: } else {
81: $r->print(&Apache::lonwrapper::wrapper("/public/$cdom/$cnum/syllabus?wrapperdisplay=menu",
82: $externalsyllabus));
83: }
84: return OK;
85: }
86:
87: # ------------------------------ The buck stops here: internal syllabus display
88: # --------------------------------------------------------- The syllabus fields
89: my %syllabusfields=&Apache::lonlocal::texthash(
90: 'aaa_instructorinfo' => 'Instructor Information',
91: 'bbb_description' => 'Course Description',
92: 'ccc_prereq' => 'Prerequisites',
93: 'cdc_classhours' => 'Class Hours',
94: 'ddd_officehours' => 'Office Hours',
95: 'eee_helproom' => 'Helproom Hours',
96: 'efe_projectinfo' => 'Project Information',
97: 'fff_examinfo' => 'Exam Information',
98: 'fgf_deadlines' => 'Deadlines',
99: 'ggg_grading' => 'Grading Information',
100: 'hhh_readings' => 'Readings',
101: 'iii_coursepack' => 'Coursepack',
102: 'jjj_weblinks' => 'Web Links',
103: 'kkk_textbook' => 'Textbook',
104: 'lll_includeurl' => 'URLs To Include in Syllabus');
105: # --------------------------------------------------------------- Force Student
106: my $forcestudent='';
107: if ($env{'form.forcestudent'}) { $forcestudent='student'; };
108: my $forceedit='';
109: if ($env{'form.forceedit'}) { $forceedit='edit'; }
110:
111: # ----------------------------------------------------------------- Make header
112: if ($target ne 'tex') {
113: my $rss_link = &Apache::lonrss::rss_link($cnum,$cdom);
114: my $js;
115: if ($env{'form.backto'} eq 'coursecatalog') {
116: $js .= <<"ENDSCRIPT";
117:
118: <script type="text/javascript">
119: function ToCatalog(caller) {
120: numidx = getIndexByName('coursenum');
121: if (numidx > -1) {
122: if (caller != 'details') {
123: document.backtocat.elements[numidx].value = '';
124: }
125: }
126: document.backtocat.submit();
127: }
128:
129: function getIndexByName(item) {
130: for (var i=0;i<document.backtocat.elements.length;i++) {
131: if (document.backtocat.elements[i].name == item) {
132: return i;
133: }
134: }
135: return -1;
136: }
137:
138: </script>
139:
140: ENDSCRIPT
141: }
142: my $start_page =
143: &Apache::loncommon::start_page("Syllabus", $rss_link.$js,
144: {'function' => $forcestudent,
145: 'domain' => $cdom,
146: 'force_register' =>
147: $env{'form.register'},});
148:
149: $r->print($start_page);
150: if ($env{'form.backto'} eq 'coursecatalog') {
151: &Apache::lonhtmlcommon::clear_breadcrumbs();
152: &Apache::lonhtmlcommon::add_breadcrumb
153: ({href=>"javascript:ToCatalog()",
154: text=>"Course Catalog"});
155: if ($env{'form.coursenum'} ne '') {
156: &Apache::lonhtmlcommon::add_breadcrumb
157: ({href=>"javascript:ToCatalog('details')",
158: text=>"Course details"});
159: }
160: &Apache::lonhtmlcommon::add_breadcrumb
161: ({href=>$r->uri,
162: text=>"Course syllabus"});
163: $r->print(&Apache::lonhtmlcommon::breadcrumbs());
164: }
165: $r->print('<h1>'.$courseenv{'description'}.'</h1><h3>'.
166: &Apache::lonnet::domain($cdom,'description').'</h3>');
167: } else {
168: $r->print('\noindent{\large\textbf{'.$courseenv{'description'}.'}}\\\\\\\\\textbf{'.
169: &Apache::lonnet::domain($cdom,'description').'}\\\\');
170: }
171: # -------------------------------------------------------- Get course personnel
172: my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum);
173: if ($target ne 'tex') {
174: $r->print(&Apache::lonhtmlcommon::start_pick_box());
175: } else {
176: $r->print('\begin{tabular}{|p{0.45\textwidth}|p{0.45\textwidth}|}\hline');
177: }
178: my @personnel=sort(keys(%coursepersonnel));
179: my $lastpers=$personnel[$#personnel];
180: foreach my $element (@personnel) {
181: if ($target ne 'tex') {
182: $r->print(&Apache::lonhtmlcommon::row_title($element));
183: } else {
184: $r->print(' '.&Apache::lonxml::xmlparse($r,'tex',$element).' & ');
185: }
186: foreach (split(/\,/,$coursepersonnel{$element})) {
187: my ($puname,$pudom)=split(/\:/,$_);
188: if ($target ne 'tex') {
189: my $courseperson = &Apache::loncommon::plainname($puname,$pudom);
190: if (($env{'user.name'} eq '') || ($env{'user.name'} eq 'public') ||
191: ($env{'user.domain'} eq '') || ($env{'user.domain'} eq 'public')) {
192: $r->print(' '.$courseperson);
193: } else {
194: $r->print(' '.&Apache::loncommon::aboutmewrapper($courseperson,
195: $puname,$pudom));
196: }
197: } else {
198: $r->print(' '.&Apache::loncommon::plainname($puname,
199: $pudom).' ');
200: }
201: }
202: if ($target ne 'tex') {
203: my $lastclose=$element eq $lastpers?1:0;
204: $r->print(&Apache::lonhtmlcommon::row_closure($lastclose));
205: } else {
206: $r->print('\\\\ \hline');
207: }
208: }
209: if ($target ne 'tex') {
210: $r->print(&Apache::lonhtmlcommon::end_pick_box());
211: } else {
212: $r->print('\end{tabular}\\\\');
213: }
214: # -------------------------------------------------------------- Announcements?
215: my $day = &Apache::lonannounce::showday(time,2,
216: &Apache::lonannounce::readcalendar($cdom.'_'.$cnum));
217: if ($target ne 'tex') {
218: &Apache::lontemplate::print_template($r,'RSS Feeds and Blogs',&Apache::lonrss::advertisefeeds($cnum,$cdom,$forceedit),1,'LC_ContentBoxSpecial');
219: } else {
220: $r->print(&Apache::lonxml::xmlparse($r,'tex',$day));
221: }
222: # ---------------------------------------------------------- Load syllabus info
223: my %syllabus=&Apache::lonnet::dump('syllabus',$cdom,$cnum);
224: my $allowed=0;
225: my $privileged=0;
226:
227: # This handler might be called anonymously ...
228: # ----------------------------------------------------- Only if not public call
229: if ($env{'user.environment'}) {
230: # does this user have privileges to post, etc?
231: if ($env{'request.course.id'}
232: && $cdom eq $env{'course.'.$env{'request.course.id'}.'.domain'}
233: && $cnum eq $env{'course.'.$env{'request.course.id'}.'.num'}) {
234: $allowed=&Apache::lonnet::allowed('mdc',$env{'request.course.id'});
235: $privileged=$allowed;
236: if (($syllabus{'uploaded.lastmodified'}) && (!$forceedit)) {
237: $forcestudent='student';
238: }
239: if ($forcestudent or $target eq 'tex') { $allowed=0; }
240: }
241: if ($allowed) {
242: my $protocol = $Apache::lonnet::protocol{$homeserver};
243: $protocol = 'http' if ($protocol ne 'https');
244: $r->print('<p>'.&Apache::loncommon::help_open_topic('Uploaded_Templates_TextBoxes',&mt('Help with filling in text boxes')).'</p><p>'.&mt('This syllabus can be publicly viewed at')
245: .' <tt>'.$protocol.'://'.
246: &Apache::lonnet::hostname($homeserver).$r->uri.'</tt>'.
247: &Apache::loncommon::help_open_topic('Syllabus_ExtLink').'</p>'.
248: '<p>'.&mt('You can specify an external URL as Syllabus in the [_1].','<a href="/adm/parmset?action=crsenv">'.&mt('Course Parameters').'</a>').'</p>');
249: }
250: if (($allowed) && ($env{'form.storesyl'})) {
251: foreach my $syl_field (keys(%syllabusfields)) {
252: my $field=$env{'form.'.$syl_field};
253: chomp($field);
254: $field=~s/\s+$//s;
255: $field=~s/^\s+//s;
256: $field=~s/\<br\s*\/*\>$//s;
257: $field=&Apache::lonfeedback::clear_out_html($field,1);
258: $syllabus{$syl_field}=$field;
259: if ($syl_field eq 'lll_includeurl') { # clean up included URLs
260: my $field='';
261: foreach my $value (split(/\n/,$syllabus{$syl_field})) {
262: my $url=$value;
263: # get rid of leading and trailing spaces
264: $url=~s/^\s+//;
265: $url=~s/\s+$//;
266: if ($url=~m|^https?\://([^/]+)/(.+)$|) {
267: my $host = $1;
268: my $remainder=$2;
269: # remove the hostname from internal URLs
270: my $hostname = &Apache::lonnet::hostname($host);
271: my %all_hostnames = &Apache::lonnet::all_hostnames();
272: foreach my $possible_host (keys(%all_hostnames)) {
273: if ($possible_host =~ /\Q$hostname\E/i) {
274: $url=$remainder;
275: }
276: }
277: }
278: # norm internal URLs
279: unless ($url=~/^https?\:/) {
280: $url=&Apache::lonnet::clutter($url);
281: }
282: # re-assemble field
283: if ($url) {
284: $field.=$url."\n";
285: }
286: }
287: $syllabus{$syl_field}=$field;
288: }
289: }
290: $syllabus{'uploaded.domain'}=$env{'user.domain'};
291: $syllabus{'uploaded.name'}=$env{'user.name'};
292: $syllabus{'uploaded.lastmodified'}=time;
293: &Apache::lonnet::put('syllabus',\%syllabus,$cdom,$cnum);
294: }
295: }
296: # ---------------------------------------------------------------- Get syllabus
297: if (($syllabus{'uploaded.lastmodified'}) || ($allowed)) {
298: my $lastmod=$syllabus{'uploaded.lastmodified'};
299: $lastmod=($lastmod?&Apache::lonlocal::locallocaltime($lastmod):&mt('never'));
300: my $who = &Apache::loncommon::aboutmewrapper(
301: &Apache::loncommon::plainname($syllabus{'uploaded.name'},
302: $syllabus{'uploaded.domain'}),$syllabus{'uploaded.name'},
303: $syllabus{'uploaded.domain'});
304: if ($target ne 'tex') {
305: $r->print('<table><tr><td>'.&mt('Last updated').':</td><td>'.
306: $lastmod.'</td><td>'.
307: ($who ? &mt('by').' '.$who
308: : '' ).
309: '</td></tr></table><p>');
310: } else {
311: $r->print('\\\\ '.&mt('Last updated').': '.$lastmod.' '.
312: ($who? &mt('by').'\\\\ '.
313: &Apache::loncommon::plainname($syllabus{'uploaded.name'},$syllabus{'uploaded.domain'})
314: :'')
315: .'\\\\');
316: }
317:
318: if ($target ne 'tex') {
319: &Apache::lontemplate::print_start_page_functions($r);
320: if($allowed){
321: &Apache::lontemplate::print_functions_content($r,'<a href="'.$r->uri.'?forcestudent=1">'.&mt('Show Public View').'</a>'.
322: &Apache::loncommon::help_open_topic('Uploaded_Templates_PublicView'));
323: }elsif($privileged){
324: &Apache::lontemplate::print_functions_content($r,'<a href="'.$r->uri.'?forceedit=1">'.&mt('Edit').'</a>');
325: }
326: &Apache::lontemplate::print_end_page_functions($r);
327: }
328:
329: if ($allowed) {
330: $r->print('<form method="post">'.
331: '<input type="hidden" name="forceedit" value="edit" />');
332: }
333: my @htmlids=();
334:
335: foreach my $field (sort(keys(%syllabusfields))) {
336: if (($syllabus{$field}=~/\w/) || ($allowed)) {
337: my $message=$syllabus{$field};
338: if ($field eq 'lll_includeurl') { # this is the "included" field
339: my $urls=$message;
340: $message='';
341: foreach my $filelink (split(/\n/,$urls)) {
342: my $output='';
343: # embed style?
344: my ($curfext)=($filelink=~/\.([^\.]+)$/);
345: my $embstyle=&Apache::loncommon::fileembstyle($curfext);
346: if (($embstyle eq 'ssi') || ($curfext=~/\/$/)) {
347: # make ssi call and remove everything but the body contents
348: $output=&Apache::lonnet::ssi_body($filelink);
349: } elsif ($embstyle eq 'img') {
350: # embed as an image
351: $output='<img src="'.$filelink.'" />';
352: }
353: if ($target ne 'tex') {
354: $message.='<p>'.$output.'</p>';
355: } else {
356: $message.=' '.&Apache::lonxml::xmlparse($r,'tex','<p>'.$output.'</p>').' ';
357: }
358: }
359: if ($allowed) {
360: $r->print('<h3>'.$syllabusfields{$field}.
361: &Apache::loncommon::help_open_topic('Syllabus_URLs').'</h3>');
362: } else {
363: $r->print($message);
364: }
365: } else {
366: &Apache::lonfeedback::newline_to_br(\$message);
367: $message =~s|(https?\://[^\s]+)|<a href="$1"><tt>$1</tt></a>|g;
368: if ($allowed) {
369: $message=&Apache::lonspeller::markeduptext($message);
370: }
371: $message=&Apache::lontexconvert::msgtexconverted($message);
372: if ($target ne 'tex') {
373: if($allowed){
374: $r->print('<p>');
375: }
376: &Apache::lontemplate::print_template($r, $syllabusfields{$field}, $message,$allowed,'LC_ContentBoxSpecial');
377: } else {
378: $r->print('\\\\\textbf{'.$syllabusfields{$field}.'}\\\\'.
379: &Apache::lonxml::xmlparse($r,'tex',$message).'\\\\');
380: }
381: push(@htmlids,$field);
382: }
383: if ($allowed) {
384: if($target ne 'tex'){
385: $r->print('</p>');
386: }
387: &Apache::lontemplate::print_editbox_template($r, $syllabus{$field}, $field);
388: }
389: }
390: }
391:
392: if ($allowed) {
393: $r->print('</form>'.
394: &Apache::lonhtmlcommon::htmlareaselectactive(@htmlids));
395: }
396: if ($target ne 'tex') {$r->print('</p>');} else {$r->print('\\\\');}
397: } else {
398: if ($target ne 'tex') {$r->print('<p>');} else {$r->print('\par ');}
399: $r->print(&mt('No syllabus information provided.'));
400: if ($target ne 'tex') {$r->print('</p>');}
401: }
402: if ($target ne 'tex') {
403: if ($env{'form.backto'} eq 'coursecatalog') {
404: $r->print('<form name="backtocat" method="post" action="/adm/coursecatalog">'.
405: &Apache::lonhtmlcommon::echo_form_input(['backto','courseid']).
406: '</form>');
407: }
408: $r->print(&Apache::loncommon::end_page());
409: } else {
410: $r->print('\end{document}');
411: }
412: return OK;
413: }
414:
415: 1;
416: __END__
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