1: # The LearningOnline Network with CAPA
2: # Handler for displaying the course catalog interface
3: #
4: # $Id: coursecatalog.pm,v 1.27 2008/03/08 04:00:53 raeburn 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::coursecatalog;
30:
31: use strict;
32: use lib qw(/home/httpd/lib/perl);
33: use Apache::Constants qw(:common);
34: use Apache::loncommon;
35: use Apache::lonhtmlcommon;
36: use Apache::lonnet;
37: use Apache::lonlocal;
38: use Apache::courseclassifier;
39: use Apache::lonacc;
40: use LONCAPA;
41:
42: sub handler {
43: my ($r) = @_;
44: &Apache::loncommon::content_type($r,'text/html');
45: $r->send_http_header;
46: if ($r->header_only) {
47: return OK;
48: }
49: my $handle = &Apache::lonnet::check_for_valid_session($r);
50: my $lonidsdir=$r->dir_config('lonIDsDir');
51: if ($handle ne '') {
52: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
53: }
54: &Apache::lonacc::get_posted_cgi($r);
55: &Apache::lonlocal::get_language_handle($r);
56: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['sortby']);
57: my $codedom = &Apache::lonnet::default_login_domain();
58:
59: if (($env{'user.domain'} ne '') && ($env{'user.domain'} ne 'public')) {
60: $codedom = $env{'user.domain'};
61: if ($env{'request.role.domain'} ne '') {
62: $codedom = $env{'request.role.domain'};
63: }
64: }
65: my $formname = 'coursecatalog';
66: my $domdesc = &Apache::lonnet::domain($codedom,'description');
67:
68: &Apache::lonhtmlcommon::clear_breadcrumbs();
69: if ($env{'form.coursenum'} ne '' && &user_is_known()) {
70: &course_details($r,$codedom,$formname,$domdesc);
71: } else {
72: my $numtitles = &course_selector($r,$codedom,$formname,$domdesc);
73: if ($env{'form.state'} eq 'listing') {
74: $r->print(&print_course_listing($codedom,$numtitles).'<br />');
75: }
76: }
77: $r->print(&Apache::loncommon::end_page());
78: return OK;
79: }
80:
81: sub course_details {
82: my ($r,$codedom,$formname,$domdesc) = @_;
83: my $output;
84: my %add_entries = (topmargin => "0",
85: marginheight => "0",);
86: my $start_page =
87: &Apache::loncommon::start_page('Course Catalog','',
88: {
89: 'add_entries' => \%add_entries,
90: 'no_inline_link' => 1,});
91: $r->print($start_page);
92: if ($env{'form.numtitles'} > 0) {
93: &Apache::lonhtmlcommon::add_breadcrumb
94: ({href=>"/adm/coursecatalog",
95: text=>"Select courses"});
96: }
97: &Apache::lonhtmlcommon::add_breadcrumb
98: ({href=>"javascript:document.$formname.submit()",
99: text=>"Course listing"},
100: {text=>"Course details"});
101: $r->print(&Apache::lonhtmlcommon::breadcrumbs('Course Details'));
102: $r->print('<br />'.&mt('Detailed course information:').'<br /><br />'.
103: '<form name="coursecatalog" method="post">'.
104: &print_course_listing($codedom).'<br /><br />');
105: $r->print('<a href = "javascript:document.coursecatalog.submit()">'.
106: &mt('Back to course listing').'</a>'.
107: '<input type="hidden" name="sortby" value="'.
108: $env{'form.sortby'}.'" />'.
109: '<input type="hidden" name="state" value="listing" /></form>');
110: }
111:
112: sub course_selector {
113: my ($r,$codedom,$formname,$domdesc) = @_;
114: my %coursecodes = ();
115: my %codes = ();
116: my @codetitles = ();
117: my %cat_titles = ();
118: my %cat_order = ();
119: my %idlist = ();
120: my %idnums = ();
121: my %idlist_titles = ();
122: my %by_year;
123: my %by_sem;
124: my %by_dept;
125: my %cat_items;
126: my $caller = 'global';
127: my $format_reply;
128: my $totcodes = 0;
129: my $jscript = '';
130: my ($numtitles,$lasttitle);
131: $totcodes = &Apache::courseclassifier::retrieve_instcodes(\%coursecodes,$codedom);
132: if ($totcodes > 0) {
133: $format_reply = &Apache::lonnet::auto_instcode_format($caller,$codedom,\%coursecodes,\%codes,\@codetitles,\%cat_titles,\%cat_order);
134: if ($format_reply eq 'ok') {
135: my $numtypes = @codetitles;
136: &Apache::courseclassifier::build_code_selections(\%codes,\@codetitles,\%cat_titles,\%cat_order,\%idlist,\%idnums,\%idlist_titles);
137: my ($scripttext,$longtitles) = &Apache::courseclassifier::javascript_definitions(\@codetitles,\%idlist,\%idlist_titles,\%idnums,\%cat_titles);
138: my $longtitles_str = join('","',@{$longtitles});
139: my $allidlist = $idlist{$codetitles[0]};
140: $numtitles = @codetitles;
141: $lasttitle = $numtitles;
142: if ($numtitles > 4) {
143: $lasttitle = 4;
144: }
145: if ($numtitles == 0) {
146: if (!defined($env{'form.state'})) {
147: $env{'form.state'} = 'listing';
148: }
149: } else {
150: my @data = ('top');
151: for (my $k=0; $k<$lasttitle; $k++) {
152: my $cat = $codetitles[$k];
153: my $level = 1;
154: $level = &recurse_options($codetitles[$k],$idlist{$codetitles[$k]},$level,$cat,\%cat_items,\@data,\%by_year,\%by_sem,\%by_dept);
155: }
156: $scripttext .= &build_javascript(\%by_year,\%by_sem,\%by_dept,\%cat_order,\@codetitles);
157: $jscript .= &javascript_select_filler($formname,$scripttext,\@codetitles,$longtitles_str,$allidlist);
158: if ($env{'form.state'} eq 'listing') {
159: $jscript .= '
160: function setElements() {
161: ';
162: for (my $i=0; $i<@codetitles-1; $i++) {
163: if ($env{'form.'.$codetitles[$i]} != -1) {
164: $jscript .= '
165: for (var j=0; j<document.'.$formname.'.'.$codetitles[$i].'.length; j++) {
166: if (document.'.$formname.'.'.$codetitles[$i].'[j].value == "'.$env{'form.'.$codetitles[$i]}.'") {
167: document.'.$formname.'.'.$codetitles[$i].'.selectedIndex = j;
168: }
169: }
170: ';
171: }
172: }
173: $jscript .= ' courseSet()'."\n";
174: if ($env{'form.'.$codetitles[-1]} != -1) {
175: $jscript .= '
176: for (var j=0; j<document.'.$formname.'.'.$codetitles[-1].'.length; j++) {
177: if (document.'.$formname.'.'.$codetitles[-1].'[j].value == "'.$env{'form.'.$codetitles[-1]}.'") {
178: document.'.$formname.'.'.$codetitles[-1].'.selectedIndex = j;
179: }
180: }
181: ';
182: }
183: $jscript .= '}';
184: }
185: }
186: if ($env{'form.state'} eq 'listing') {
187: $jscript .= qq|
188: function changeSort(caller) {
189: document.$formname.sortby.value = caller;
190: document.$formname.submit();
191: }
192: function setCourseId(caller) {
193: document.$formname.coursenum.value = caller;
194: document.$formname.submit();
195: }\n|;
196: }
197: }
198: my $js = '<script type"text/javascript">'."\n$jscript\n".
199: '</script>';
200: my %add_entries = (topmargin => "0",
201: marginheight => "0",);
202: if (($env{'form.state'} eq 'listing') && ($numtitles > 0)) {
203: $add_entries{'onLoad'} = 'setElements()';
204: }
205: my $start_page =
206: &Apache::loncommon::start_page('Course Catalog',$js,
207: {
208: 'add_entries' => \%add_entries,
209: 'no_inline_link' => 1,});
210: $r->print($start_page);
211: if ($env{'form.state'} eq 'listing') {
212: if ($numtitles > 0) {
213: &Apache::lonhtmlcommon::add_breadcrumb
214: ({href=>"/adm/coursecatalog",
215: text=>"Select courses"},
216: {text=>"Course listing"});
217: } else {
218: &Apache::lonhtmlcommon::add_breadcrumb
219: ({text=>"Course listing"});
220: }
221: $r->print(&Apache::lonhtmlcommon::breadcrumbs('Course Listing'));
222: } else {
223: &Apache::lonhtmlcommon::add_breadcrumb
224: ({href=>"/adm/coursecatalog",
225: text=>"Select courses"});
226: $r->print(&Apache::lonhtmlcommon::breadcrumbs('Select courses'));
227: }
228: $r->print('<h3>'.&mt('Display information about official [_1] classes for which LON-CAPA courses have been created:',$domdesc).'</h3>');
229: $r->print('<form name="coursecatalog" method="post">');
230: if ($numtitles > 0) {
231: $r->print(&mt('<b>Choose which course(s) to list.</b><br />'));
232: $r->print('<table><tr>');
233: for (my $k=0; $k<$lasttitle-1; $k++) {
234: my (@items,@unsorted);
235: if (ref($cat_items{$codetitles[$k]}) eq 'ARRAY') {
236: @unsorted = @{$cat_items{$codetitles[$k]}};
237: }
238: &Apache::courseclassifier::sort_cats($k,\%cat_order,\@codetitles,\@unsorted,\@items);
239: my @longitems;
240: if (defined($cat_titles{$codetitles[$k]})) {
241: foreach my $item (@items) {
242: push(@longitems,$cat_titles{$codetitles[$k]}{$item});
243: }
244: } else {
245: @longitems = @items;
246: }
247: $r->print('<td align="center">'.$codetitles[$k].'<br />'."\n".
248: '<select name="'.$codetitles[$k].'" onChange="courseSet()"');
249: $r->print('>'."\n".'<option value="0" />All'."\n");
250: for (my $i=0; $i<@items; $i++) {
251: if ($longitems[$i] eq '') {
252: $longitems[$i] = $items[$i];
253: }
254: $r->print(' <option value="'.$items[$i].'">'.$longitems[$i].'</option>');
255: }
256: $r->print('</select></td>');
257: }
258: $r->print('<td align="center">'.$codetitles[$lasttitle-1].'<br />'."\n".
259: '<select name="'.$codetitles[$lasttitle-1].'">'."\n".
260: '<option value="0">All'."\n".
261: '</option>'."\n".'</select>'."\n".
262: '</td>'
263: );
264: my $show_selfenroll_status;
265: if ($env{'form.showselfenroll'}) {
266: $show_selfenroll_status = 'checked="checked" ';
267: }
268: if (&user_is_dc($codedom)) {
269: my $showdetails_status;
270: if ($env{'form.showdetails'}) {
271: $showdetails_status = 'checked="checked" ';
272: }
273: $r->print('<td></td><td><label><input type="checkbox" name="showdetails" value="1" '.$showdetails_status.'/>'.&mt('Show full details for each course (DC only)').'</label><br /><label><input type="checkbox" name="showselfenroll" value="1" '.$show_selfenroll_status.'/>'.&mt('Only show courses which allow self-enrollment').'</label></td>');
274: } else {
275: $r->print('<td></td><td><br /><label><input type="checkbox" name="showselfenroll" value="1" '.$show_selfenroll_status.'/>'.&mt('Only show courses which allow self-enrollment').'</label></td>');
276: }
277: $r->print('</tr></table>');
278: if ($numtitles > 4) {
279: $r->print('<br /><br />'.$codetitles[$numtitles-1].'<br />'."\n".
280: '<input type="text" name="'.$codetitles[$numtitles-1].'" /><br />'."\n");
281: }
282: $r->print('<br />');
283: }
284: $r->print('<input type="hidden" name="coursenum" value="" /><input type="hidden" name="sortby" value="" /><input type="hidden" name="state" value="listing" />');
285: if ($numtitles > 0) {
286: $r->print('<input type="submit" name="catalogfilter" value="'.&mt('Display courses').'" />');
287: }
288: $r->print('<input type="hidden" name="numtitles" value="'.
289: $numtitles.'" /></form>');
290: if (($numtitles > 0) && ($env{'form.state'} eq 'listing')) {
291: $r->print('<br /><br />');
292: }
293: } else {
294: $r->print(&Apache::loncommon::start_page('Course Catalog','',
295: {
296: 'no_inline_link' => 1,}));
297: $r->print('<br />'.&mt('No official courses to display for [_1].',$domdesc));
298: }
299: return $numtitles;
300: }
301:
302: sub user_is_dc {
303: my ($codedom) = @_;
304: if (exists($env{'user.role.dc./'.$codedom.'/'})) {
305: my $livedc = 1;
306: my $now = time;
307: my ($start,$end)=split(/\./,$env{'user.role.dc./'.$codedom.'/'});
308: if ($start && $start>$now) { $livedc = 0; }
309: if ($end && $end <$now) { $livedc = 0; }
310: return $livedc;
311: }
312: return;
313: }
314:
315: sub recurse_options {
316: my ($currkey,$currlist,$level,$cat,$cat_options,$data,$by_year,$by_sem,$by_dept) = @_;
317: if (ref($currlist) eq 'HASH') {
318: $level ++;
319: foreach my $key (sort(keys(%{$currlist}))) {
320: $$data[$level-1]= $key;
321: &recurse_options($key,$currlist->{$key},$level,$cat,$cat_options,$data,$by_year,$by_sem,$by_dept);
322: }
323: } else {
324: $level --;
325: my @contents = split(/","/,$currlist);
326: foreach my $item (@contents) {
327: if (!grep(/^\Q$item\E$/,@{$cat_options->{$cat}})) {
328: push(@{$cat_options->{$cat}},$item);
329: }
330: if ($level == 3) {
331: if (!grep/^\Q$item\E$/,@{$by_year->{$data->[1]}->{$currkey}}) {
332: push(@{$by_year->{$data->[1]}->{$currkey}},$item);
333: }
334: if (!grep/^\Q$item\E$/,@{$by_sem->{$data->[2]}->{$currkey}}) {
335: push(@{$by_sem->{$data->[2]}->{$currkey}},$item);
336: }
337: if (!grep/^\Q$item\E$/,@{$by_dept->{$currkey}}) {
338: push(@{$by_dept->{$currkey}},$item);
339: }
340:
341: }
342: }
343: }
344: return $level;
345: }
346:
347: sub build_javascript {
348: my ($by_year,$by_sem,$by_dept,$cat_order,$codetitles) = @_;
349: my @unsorted = keys(%{$by_year});
350: my @sorted_yrs;
351: &Apache::courseclassifier::sort_cats('0',$cat_order,$codetitles,\@unsorted,\@sorted_yrs);
352: my $output = 'var idcse_by_yr_year = new Array("'.join('","',@sorted_yrs).'");'."\n".
353: 'var idcse_by_yr_dept = new Array('.scalar(@sorted_yrs).');'."\n".
354: 'var idcse_by_yr_num = new Array('.scalar(@sorted_yrs).');'."\n";
355: for (my $i=0; $i<@sorted_yrs; $i++) {
356: my $numkeys = keys(%{$by_year->{$sorted_yrs[$i]}});
357: $output .= " idcse_by_yr_num[$i] = new Array($numkeys);\n";
358: if (ref($by_year->{$sorted_yrs[$i]}) eq 'HASH') {
359: @unsorted = keys(%{$by_year->{$sorted_yrs[$i]}});
360: my @sorted_depts;
361: &Apache::courseclassifier::sort_cats('2',$cat_order,$codetitles,\@unsorted,\@sorted_depts);
362: $output .= qq| idcse_by_yr_dept[$i] = new Array ("|.join('","',@sorted_depts).'");'."\n";
363: for (my $j=0; $j<@sorted_depts; $j++) {
364: $output .= qq| idcse_by_yr_num[$i][$j] = new Array ("|;
365: $output .= join('","',sort(@{$by_year->{$sorted_yrs[$i]}->{$sorted_depts[$j]}})).'");'."\n";
366: }
367: }
368: }
369: @unsorted = keys(%{$by_sem});
370: my @sorted_sems;
371: &Apache::courseclassifier::sort_cats('1',$cat_order,$codetitles,\@unsorted,\@sorted_sems);
372: $output .= 'idcse_by_sem_sems = new Array("'.join('","',@sorted_sems).'");'."\n".
373: 'idcse_by_sem_dept = new Array('.scalar(@sorted_sems).');'."\n".
374: 'idcse_by_sem_num = new Array('.scalar(@sorted_sems).');'."\n";
375: for (my $i=0; $i<@sorted_sems; $i++) {
376: my $numkeys = keys(%{$by_sem->{$sorted_sems[$i]}});
377: $output .= " idcse_by_sem_num[$i] = new Array($numkeys);\n";
378: if (ref($by_sem->{$sorted_sems[$i]}) eq 'HASH') {
379: @unsorted = keys(%{$by_sem->{$sorted_sems[$i]}});
380: my @sorted_depts;
381: &Apache::courseclassifier::sort_cats('2',$cat_order,$codetitles,\@unsorted,\@sorted_depts);
382: $output .= qq| idcse_by_sem_dept[$i] = new Array("|.join('","',@sorted_depts).'");'."\n";
383: for (my $j=0; $j<@sorted_depts; $j++) {
384: $output .= qq| idcse_by_sem_num[$i][$j] = new Array ("|.join('","',sort(@{$by_sem->{$sorted_sems[$i]}->{$sorted_depts[$j]}})).'");'."\n";
385: }
386: }
387: }
388: @unsorted = keys(%{$by_dept});
389: my @sorted_deps;
390: &Apache::courseclassifier::sort_cats('2',$cat_order,$codetitles,\@unsorted,\@sorted_deps);
391: $output .= 'idcse_by_dep = new Array('.scalar(@sorted_deps).');'."\n";
392: for (my $k=0; $k<@sorted_deps; $k++) {
393: $output .= qq| idcse_by_dep[$k] = new Array ("|.join('","',sort(@{$by_dept->{$sorted_deps[$k]}})).'");'."\n";
394: }
395: return $output;
396: }
397:
398: sub search_courselist {
399: my ($domain,$numtitles) = @_;
400: my $instcode;
401: if (defined($numtitles) && $numtitles == 0) {
402: $instcode = '.+';
403: } else {
404: my (%codedefaults,@code_order);
405: my $defaults_result =
406: &Apache::lonnet::auto_instcode_defaults($domain,\%codedefaults,
407: \@code_order);
408: if ($defaults_result eq 'ok') {
409: $instcode ='^';
410: foreach my $item (@code_order) {
411: if ($env{'form.'.$item} eq '0' ) {
412: $instcode .= $codedefaults{$item};
413: } else {
414: $instcode .= $env{'form.'.$item};
415: }
416: }
417: $instcode .= '$';
418: } else {
419: $instcode = '.';
420: }
421: }
422: my %courses = &Apache::lonnet::courseiddump($domain,'.',1,$instcode,'.','.',
423: undef,undef,'Course',1,
424: $env{'form.showselfenroll'});
425: return %courses;
426: }
427:
428:
429: sub print_course_listing {
430: my ($domain,$numtitles) = @_;
431: my $output;
432: my %courses;
433: my $knownuser = &user_is_known();
434: my $details = $env{'form.coursenum'};
435: if (&user_is_dc($domain)) {
436: if ($env{'form.showdetails'}) {
437: $details = 1;
438: }
439: }
440: if ($env{'form.coursenum'} ne '') {
441: %courses = &Apache::lonnet::courseiddump($domain,'.',1,'.','.',
442: $env{'form.coursenum'},
443: undef,undef,'Course',1);
444: if (keys(%courses) == 0) {
445: $output .= &mt('The courseID provided does not match a course in this domain.');
446: return $output;
447: }
448: } else {
449: %courses = &search_courselist($domain,$numtitles);
450: if (keys(%courses) == 0) {
451: $output = &mt('No courses match the criteria you selected.');
452: return $output;
453: }
454: if ($knownuser && !$env{'form.showdetails'}) {
455: $output = &mt('<b>Note for students:</b> If you are officially enrolled in a course but the course is not listed in your LON-CAPA courses, click the "Show more details" link for the specific course and check the default access dates and/or automated enrollment settings.<br /><br />');
456: }
457: }
458: my $now = time;
459: my %domconfig =
460: &Apache::lonnet::get_dom('configuration',['usercreation'],$domain);
461: $output .= &construct_data_table($knownuser,\%courses,$details,undef,$now,\%domconfig);
462: $output .= &Apache::lonhtmlcommon::echo_form_input(['coursenum','state','catalogfilter','sortby','showdetails']);
463: return $output;
464: }
465:
466: sub construct_data_table {
467: my ($knownuser,$courses,$details,$usersections,$now,$domconfig) = @_;
468: my %sortname;
469: if (($details eq '') || ($env{'form.showdetails'})) {
470: $sortname{'Code'} = 'code';
471: $sortname{'Title'} = 'title';
472: $sortname{'Owner(s)'} = 'owner';
473: }
474: my $output = &Apache::loncommon::start_data_table().
475: &Apache::loncommon::start_data_table_header_row();
476: my @coltitles = ('Count','Code','Sections','Crosslisted','Title','Owner(s)');
477: if (ref($usersections) eq 'HASH') {
478: $coltitles[1] = 'Your Section';
479: }
480: foreach my $item (@coltitles) {
481: $output .= '<th>';
482: if (defined($sortname{$item})) {
483: $output .= '<a href="javascript:changeSort('."'$sortname{$item}'".')">'.&mt($item).'</a>';
484: } elsif ($item eq 'Count') {
485: $output .= ' ';
486: } else {
487: $output .= &mt($item);
488: }
489: $output .= '</th>';
490: }
491: if ($knownuser) {
492: if ($details) {
493: $output .=
494: '<th>'.&mt('Default Access Dates for Students').'</th>'.
495: '<th>'.&mt('Student Counts').'</th>'.
496: '<th>'.&mt('Auto-enrollment of <br />registered students').'</th>';
497: } else {
498: $output .= '<th>'.&mt('Details').'</th>';
499: }
500: }
501: $output .= '<th>'.&mt('Self-enroll (if permitted)').'</th>';
502: &Apache::loncommon::end_data_table_header_row();
503: my %courseinfo = &build_courseinfo_hash($courses,$knownuser,$details,
504: $usersections);
505: my %Sortby;
506: foreach my $course (sort(keys(%{$courses}))) {
507: if ($env{'form.sortby'} eq 'code') {
508: push(@{$Sortby{$courseinfo{$course}{'code'}}},$course);
509: } elsif ($env{'form.sortby'} eq 'owner') {
510: push(@{$Sortby{$courseinfo{$course}{'ownerlastnames'}}},$course);
511: } else {
512: my $clean_title = $courseinfo{$course}{'title'};
513: $clean_title =~ s/\W+//g;
514: if ($clean_title eq '') {
515: $clean_title = $courseinfo{$course}{'title'};
516: }
517: push(@{$Sortby{$clean_title}},$course);
518: }
519: }
520: my @sorted_courses;
521: if (($env{'form.sortby'} eq 'code') || ($env{'form.sortby'} eq 'owner')) {
522: @sorted_courses = sort(keys(%Sortby));
523: } else {
524: @sorted_courses = sort { lc($a) cmp lc($b) } (keys(%Sortby));
525: }
526: my $count = 1;
527: foreach my $item (@sorted_courses) {
528: foreach my $course (@{$Sortby{$item}}) {
529: $output.=&Apache::loncommon::start_data_table_row();
530: $output.=&courseinfo_row($courseinfo{$course},$knownuser,
531: $details,\$count,$now,$course);
532: $output.=&Apache::loncommon::end_data_table_row();
533: }
534: }
535: $output .= &Apache::loncommon::end_data_table();
536: return $output;
537: }
538:
539: sub build_courseinfo_hash {
540: my ($courses,$knownuser,$details,$usersections) = @_;
541: my %courseinfo;
542: my $now = time;
543: foreach my $course (keys(%{$courses})) {
544: my $descr;
545: if (ref($courses->{$course}) eq 'HASH') {
546: $descr = $courses->{$course}{'description'};
547: }
548: my $cleandesc=&HTML::Entities::encode($descr,'<>&"');
549: $cleandesc=~s/'/\\'/g;
550: $cleandesc =~ s/^\s+//;
551: my ($cdom,$cnum)=split(/\_/,$course);
552: my ($descr,$instcode,$singleowner,$ttype,$selfenroll_types,
553: $selfenroll_start,$selfenroll_end,@owners,%ownernames);
554: if (ref($courses->{$course}) eq 'HASH') {
555: $descr = $courses->{$course}{'description'};
556: $instcode = $courses->{$course}{'inst_code'};
557: $singleowner = $courses->{$course}{'owner'};
558: $ttype = $courses->{$course}{'type'};
559: $selfenroll_types = $courses->{$course}{'selfenroll_types'};
560: $selfenroll_start = $courses->{$course}{'selfenroll_start_date'};
561: $selfenroll_end = $courses->{$course}{'selfenroll_end_date'};
562: push(@owners,$singleowner);
563: if (ref($courses->{$course}{'co-owners'}) eq 'ARRAY') {
564: foreach my $item (@{$courses->{$course}{'co-owners'}}) {
565: push(@owners,$item);
566: }
567: }
568: }
569: foreach my $owner (@owners) {
570: my ($ownername,$ownerdom) = @_;
571: if ($owner =~ /:/) {
572: ($ownername,$ownerdom) = split(/:/,$owner);
573: } else {
574: $ownername = $owner;
575: if ($owner ne '') {
576: $ownerdom = $cdom;
577: }
578: }
579: if ($ownername ne '' && $ownerdom ne '') {
580: my %namehash=&Apache::loncommon::getnames($ownername,$ownerdom);
581: $ownernames{$ownername.':'.$ownerdom} = \%namehash;
582: }
583: }
584: $courseinfo{$course}{'cdom'} = $cdom;
585: $courseinfo{$course}{'cnum'} = $cnum;
586: $courseinfo{$course}{'code'} = $instcode;
587: my @lastnames;
588: foreach my $owner (keys(%ownernames)) {
589: if (ref($ownernames{$owner}) eq 'HASH') {
590: push(@lastnames,$ownernames{$owner}{'lastname'});
591: }
592: }
593: $courseinfo{$course}{'ownerlastnames'} = join(', ',sort(@lastnames));
594: $courseinfo{$course}{'title'} = $cleandesc;
595: $courseinfo{$course}{'owner'} = $singleowner;
596: $courseinfo{$course}{'selfenroll_types'} = $selfenroll_types;
597: $courseinfo{$course}{'selfenroll_start'} = $selfenroll_start;
598: $courseinfo{$course}{'selfenroll_end'} = $selfenroll_end;
599:
600: my %coursehash = &Apache::lonnet::dump('environment',$cdom,$cnum);
601: my @classids;
602: my @crosslistings;
603: my ($seclist,$numsec) =
604: &identify_sections($coursehash{'internal.sectionnums'});
605: if (ref($usersections) eq 'HASH') {
606: if (ref($usersections->{$course}) eq 'ARRAY') {
607: $seclist = join(', ',@{$usersections->{$course}});
608: }
609: }
610: $courseinfo{$course}{'seclist'} = $seclist;
611: my ($xlist_items,$numxlist) =
612: &identify_sections($coursehash{'internal.crosslistings'});
613: my $showsyllabus = 1; # default is to include a syllabus link
614: if (defined($coursehash{'showsyllabus'})) {
615: $showsyllabus = $coursehash{'showsyllabus'};
616: }
617: $courseinfo{$course}{'showsyllabus'} = $showsyllabus;
618: if (((defined($env{'form.coursenum'}) && ($cnum eq $env{'form.coursenum'}))) ||
619: ($knownuser && ($details == 1))) {
620: $courseinfo{$course}{'counts'} = &count_students($cdom,$cnum,$numsec);
621: $courseinfo{$course}{'autoenrollment'} =
622: &autoenroll_info(\%coursehash,$now,$seclist,$xlist_items,
623: $instcode,\@owners,$cdom,$cnum);
624:
625: my $startaccess = '';
626: my $endaccess = '';
627: my $accessdates;
628: if ( defined($coursehash{'default_enrollment_start_date'}) ) {
629: $startaccess = &Apache::lonlocal::locallocaltime($coursehash{'default_enrollment_start_date'});
630: }
631: if ( defined($coursehash{'default_enrollment_end_date'}) ) {
632: $endaccess = &Apache::lonlocal::locallocaltime($coursehash{'default_enrollment_end_date'});
633: if ($coursehash{'default_enrollment_end_date'} == 0) {
634: $endaccess = "No ending date";
635: }
636: }
637: if ($startaccess) {
638: $accessdates .= &mt('<i>From:</i> ').$startaccess.'<br />';
639: }
640: if ($endaccess) {
641: $accessdates .= &mt('<i>To:</i> ').$endaccess.'<br />';
642: }
643: $courseinfo{$course}{'access'} = $accessdates;
644: }
645: if ($xlist_items eq '') {
646: $xlist_items = &mt('No');
647: }
648: $courseinfo{$course}{'xlist'} = $xlist_items;
649: }
650: return %courseinfo;
651: }
652:
653: sub count_students {
654: my ($cdom,$cnum,$numsec) = @_;
655: my $classlist = &Apache::loncoursedata::get_classlist($cdom,$cnum);
656: my %student_count = (
657: Active => 0,
658: Future => 0,
659: Expired => 0,
660: );
661: my %idx;
662: $idx{'status'} = &Apache::loncoursedata::CL_STATUS();
663: my %status_title = &Apache::lonlocal::texthash(
664: Expired => 'Previous access',
665: Active => 'Current access',
666: Future => 'Future access',
667: );
668:
669: while (my ($student,$data) = each(%$classlist)) {
670: $student_count{$data->[$idx{'status'}]} ++;
671: }
672:
673: my $countslist = &mt('[quant,_1,section]',$numsec).':<br />';
674: foreach my $status ('Active','Future') {
675: $countslist .= '<nobr>'.$status_title{$status}.': '.
676: $student_count{$status}.'</nobr><br />';
677: }
678: return $countslist;
679: }
680:
681: sub courseinfo_row {
682: my ($info,$knownuser,$details,$countref,$now,$course) = @_;
683: my ($cdom,$cnum,$title,$ownerlast,$code,$owner,$seclist,$xlist_items,
684: $accessdates,$showsyllabus,$counts,$autoenrollment,$output);
685: if (ref($info) eq 'HASH') {
686: $cdom = $info->{'cdom'};
687: $cnum = $info->{'cnum'};
688: $title = $info->{'title'};
689: $ownerlast = $info->{'ownerlastnames'};
690: $code = $info->{'code'};
691: $owner = $info->{'owner'};
692: $seclist = $info->{'seclist'};
693: $xlist_items = $info->{'xlist'};
694: $accessdates = $info->{'access'};
695: $counts = $info->{'counts'};
696: $autoenrollment = $info->{'autoenrollment'};
697: $showsyllabus = $info->{'showsyllabus'};
698: } else {
699: $output = '<td colspan="8">'.&mt('No information available for [_1].',
700: $code).'</td>';
701: return $output;
702: }
703: $output .= '<td>'.$$countref.'</td>'.
704: '<td>'.$code.'</td>'.
705: '<td>'.$seclist.'</td>'.
706: '<td>'.$xlist_items.'</td>'.
707: '<td>'.$title.' <font size="-2">';
708: if ($showsyllabus) {
709: $output .= &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$cnum,$cdom);
710: } else {
711: $output .= ' ';
712: }
713: $output .= '</font></td>'.
714: '<td>'.$ownerlast.'</td>';
715: if ($knownuser) {
716: if ($details) {
717: $output .=
718: '<td>'.$accessdates.'</td>'.
719: '<td>'.$counts.'</td>'.
720: '<td>'.$autoenrollment.'</td>';
721: } else {
722: $output .= "<td><a href=\"javascript:setCourseId('$cnum')\">".&mt('Show more details').'</a></td>';
723: }
724: }
725: my $selfenroll;
726: if ($info->{'selfenroll_types'}) {
727: my $showstart = &Apache::lonlocal::locallocaltime($info->{'selfenroll_start'});
728: my $showend = &Apache::lonlocal::locallocaltime($info->{'selfenroll_end'});
729: if (($info->{'selfenroll_end'} > 0) && ($info->{'selfenroll_end'} > $now)) {
730: if (($info->{'selfenroll_start'} > 0) && ($info->{'selfenroll_start'} > $now)) {
731: $output .= '<td>'.&mt('Starts: [_1]','<span class="LC_cusr_emph">'.$showstart.'</span>').'<br />'.&mt('Ends: [_1]','<span class="LC_cusr_emph">'.$showend.'</span>').'</td>';
732: } else {
733: $output .= '<td><a href="/adm/selfenroll?cid='.$course.'">'.&mt('Enroll in course').'</a></td>';
734: }
735: $selfenroll = 1;
736: }
737: }
738: if (!$selfenroll) {
739: $output .= '<td> </td>';
740: }
741: $$countref ++;
742: return $output;
743: }
744:
745: sub identify_sections {
746: my ($seclist) = @_;
747: my @secnums;
748: if ($seclist =~ /,/) {
749: my @sections = split(/,/,$seclist);
750: foreach my $sec (@sections) {
751: $sec =~ s/:[^:]*$//;
752: push(@secnums,$sec);
753: }
754: } else {
755: if ($seclist =~ m/^([^:]+):/) {
756: my $sec = $1;
757: if (!grep(/^\Q$sec\E$/,@secnums)) {
758: push(@secnums,$sec);
759: }
760: }
761: }
762: @secnums = sort {$a <=> $b} @secnums;
763: my $seclist = join(', ',@secnums);
764: my $numsec = @secnums;
765: return ($seclist,$numsec);
766: }
767:
768: sub get_valid_classes {
769: my ($seclist,$xlist_items,$crscode,$owners,$cdom,$cnum) = @_;
770: my $response;
771: my %validations;
772: @{$validations{'sections'}} = ();
773: @{$validations{'xlists'}} = ();
774: my $totalitems = 0;
775: if ($seclist) {
776: foreach my $sec (split(/, /,$seclist)) {
777: my $class = $crscode.$sec;
778: if (&Apache::lonnet::auto_validate_class_sec($cdom,$cnum,$owners,
779: $class) eq 'ok') {
780: if (!grep(/^\Q$sec$\E/,@{$validations{'sections'}})) {
781: push(@{$validations{'sections'}},$sec);
782: $totalitems ++;
783: }
784: }
785: }
786: }
787: if ($xlist_items) {
788: foreach my $item (split(/, /,$xlist_items)) {
789: if (&Apache::lonnet::auto_validate_class_sec($cdom,$cnum,$owners,
790: $item) eq 'ok') {
791: if (!grep(/^\Q$item$\E/,@{$validations{'xlists'}})) {
792: push(@{$validations{'xlists'}},$item);
793: $totalitems ++;
794: }
795: }
796: }
797: }
798: if ($totalitems > 0) {
799: if (@{$validations{'sections'}}) {
800: $response = &mt('Sections: ').
801: join(', ',@{$validations{'sections'}}).'<br />';
802: }
803: if (@{$validations{'xlists'}}) {
804: $response .= &mt('Courses: ').
805: join(', ',@{$validations{'xlists'}});
806: }
807: }
808: return $response;
809: }
810:
811: sub javascript_select_filler {
812: my ($formname,$scripttext,$codetitles,$longtitles_str,$allidlist) = @_;
813: my $output = <<END;
814: function courseSet() {
815: var longtitles = new Array ("$longtitles_str");
816: var valyr = document.$formname.Year.options[document.$formname.Year.selectedIndex].value
817: var valsem = document.$formname.Semester.options[document.$formname.Semester.selectedIndex].value
818: var valdept = document.$formname.Department.options[document.$formname.Department.selectedIndex].value
819: var valclass = document.$formname.Number.options[document.$formname.Number.selectedIndex].value
820: var idyears = new Array("$allidlist");
821: var idyr = -1;
822: var idsem = -1;
823: var iddept = -1;
824: document.$formname.Number.length = 0;
825:
826: $scripttext
827:
828: selYear = document.$formname.Year.selectedIndex-1;
829: selSemester = document.$formname.Semester.selectedIndex-1;
830: selDepartment = document.$formname.Department.selectedIndex-1;
831: if (selYear == -1) {
832: if (selSemester == -1) {
833: if (selDepartment > -1) {
834: document.$formname.Number.options[0] = new Option('All','0',false,false);
835: for (var k=0; k<idcse_by_dep[selDepartment].length; k++) {
836: document.$formname.Number.options[k+1] = new Option(idcse_by_dep[selDepartment][k],idcse_by_dep[selDepartment][k],false,false);
837:
838: }
839: }
840: else {
841: document.$formname.Number.options[0] = new Option("All","0",true,true);
842: }
843: }
844: else {
845: if (selDepartment > -1) {
846: for (var i=0; i<idcse_by_sem_sems.length; i++) {
847: if (idcse_by_sem_sems[i] == valsem) {
848: idsem = i;
849: }
850: }
851: if (idsem != -1) {
852: for (var i=0; i<idcse_by_sem_dept[idsem].length; i++) {
853: if (idcse_by_sem_dept[idsem][i] == valdept) {
854: iddept = i;
855: }
856: }
857: }
858: if (iddept != -1) {
859: document.$formname.Number.options[0] = new Option('All','0',false,false);
860: for (var k=0; k<idcse_by_sem_num[idsem][iddept].length; k++) {
861: document.$formname.Number.options[k+1] = new Option(idcse_by_sem_num[idsem][iddept][k],idcse_by_sem_num[idsem][iddept][k],false,false);
862: }
863: }
864: else {
865: document.$formname.Number.options[0] = new Option('No courses','0',true,true);
866: }
867: }
868: else {
869: document.$formname.Number.options[0] = new Option("All","0",true,true);
870: }
871: }
872: }
873: else {
874: if (selSemester == -1) {
875: if (selDepartment > -1) {
876: for (var i=0; i<idcse_by_yr_year.length; i++) {
877: if (idcse_by_yr_year[i] == valyr) {
878: idyr = i;
879: }
880: }
881: if (idyr != -1) {
882: for (var i=0; i<idcse_by_yr_dept[idyr].length; i++) {
883: if (idcse_by_yr_dept[idyr][i] == valdept) {
884: iddept = i;
885: }
886: }
887: }
888: if (iddept != -1) {
889: document.$formname.Number.options[0] = new Option('All','0',false,false);
890: for (var k=0; k<idcse_by_yr_num[idyr][iddept].length; k++) {
891: document.$formname.Number.options[k+1] = new Option(idcse_by_yr_num[idyr][iddept][k],idcse_by_yr_num[idyr][iddept][k],false,false);
892: }
893: }
894: else {
895: document.$formname.Number.options[0] = new Option('No courses','0',true,true);
896: }
897: }
898: else {
899: document.$formname.Number.options[0] = new Option("All","0",true,true);
900: }
901: }
902: else {
903: if (selDepartment > -1) {
904: for (var k=0; k<idyears.length; k++) {
905: if (idyears[k] == valyr) {
906: idyr = k;
907: }
908: }
909: if (idyr != -1) {
910: for (var k=0; k<idsems[idyr].length; k++) {
911: if (idsems[idyr][k] == valsem) {
912: idsem = k;
913: }
914: }
915: }
916: if (idsem != -1) {
917: for (var k=0; k<idcodes[idyr][idsem].length; k++) {
918: if (idcodes[idyr][idsem][k] == valdept) {
919: iddept = k;
920: }
921: }
922: }
923: if (iddept != -1) {
924: document.$formname.Number.options[0] = new Option('All','0',false,false);
925: for (var i=0; i<idcourses[idyr][idsem][iddept].length; i++) {
926: var display = idcourses[idyr][idsem][iddept][i];
927: if (longtitles[3] == 1) {
928: if (idcourseslongs[idyr][idsem][iddept][i] != "") {
929: display = idcourseslongs[idyr][idsem][iddept][i]
930: }
931: }
932: document.$formname.Number.options[i+1] = new Option(display,idcourses[idyr][idsem][iddept][i],false,false)
933: }
934: }
935: else {
936: document.$formname.Number.options[0] = new Option('No courses','0',true,true);
937: }
938: }
939: else {
940: document.$formname.Number.options[0] = new Option('All','0',true,true);
941: }
942: }
943: document.$formname.Number.selectedIndex = 0
944: }
945: }
946: END
947: return $output;
948: }
949:
950: sub autoenroll_info {
951: my ($coursehash,$now,$seclist,$xlist_items,$code,$owners,$cdom,$cnum) = @_;
952: my $autoenrolldates = &mt('Not enabled');
953: if (defined($coursehash->{'internal.autoadds'}) && $coursehash->{'internal.autoadds'} == 1) {
954: my ($autostart,$autoend);
955: if ( defined($coursehash->{'internal.autostart'}) ) {
956: $autostart = &Apache::lonlocal::locallocaltime($coursehash->{'internal.autostart'});
957: }
958: if ( defined($coursehash->{'internal.autoend'}) ) {
959: $autoend = &Apache::lonlocal::locallocaltime($coursehash->{'internal.autoend'});
960: }
961: if ($coursehash->{'internal.autostart'} > $now) {
962: if ($coursehash->{'internal.autoend'} && $coursehash->{'internal.autoend'} < $now) {
963: $autoenrolldates = &mt('Not enabled');
964: } else {
965: my $valid_classes =
966: &get_valid_classes($seclist,$xlist_items,$code,
967: $owners,$cdom,$cnum);
968: if ($valid_classes ne '') {
969: $autoenrolldates = &mt('Not enabled<br />Starts: ').
970: $autostart.'<br />'.$valid_classes; }
971: }
972: } else {
973: if ($coursehash->{'internal.autoend'} && $coursehash->{'internal.autoend'} < $now) {
974: $autoenrolldates = &mt('Not enabled<br />Ended: ').$autoend;
975: } else {
976: my $valid_classes = &get_valid_classes($seclist,$xlist_items,
977: $code,$owners,$cdom,$cnum);
978: if ($valid_classes ne '') {
979: $autoenrolldates = &mt('Currently enabled<br />').
980: $valid_classes;
981: }
982: }
983: }
984: }
985: return $autoenrolldates;
986: }
987:
988: sub user_is_known {
989: my $known = 0;
990: if ($env{'user.name'} ne '' && $env{'user.name'} ne 'public'
991: && $env{'user.domain'} ne '' && $env{'user.domain'} ne 'public') {
992: $known = 1;
993: }
994: return $known;
995: }
996:
997: 1;
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