1: # The LearningOnline Network with CAPA
2: # Handler for displaying the course catalog interface
3: #
4: # $Id: coursecatalog.pm,v 1.17 2007/01/12 21:07:37 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::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 %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
50: my $lonid=$cookies{'lonID'};
51: my $lonidsdir=$r->dir_config('lonIDsDir');
52: my $handle;
53: if ($lonid) {
54: $handle=&LONCAPA::clean_handle($lonid->value);
55: }
56: if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
57: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
58: }
59: &Apache::lonacc::get_posted_cgi($r);
60: &Apache::lonlocal::get_language_handle($r);
61: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['sortby']);
62: my $codedom = $Apache::lonnet::perlvar{'lonDefDomain'};
63: my $formname = 'coursecatalog';
64: my $domdesc = $Apache::lonnet::domaindescription{$codedom};
65:
66: &Apache::lonhtmlcommon::clear_breadcrumbs();
67: if ($env{'form.coursenum'} ne '' && &user_is_known()) {
68: &course_details($r,$codedom,$formname,$domdesc);
69: } else {
70: &course_selector($r,$codedom,$formname,$domdesc);
71: if ($env{'form.state'} eq 'listing') {
72: $r->print('<br /><br />'.&print_course_listing($codedom).'<br />');
73: }
74: }
75: $r->print(&Apache::loncommon::end_page());
76: return OK;
77: }
78:
79: sub course_details {
80: my ($r,$codedom,$formname,$domdesc) = @_;
81: my $output;
82: my %add_entries = (topmargin => "0",
83: marginheight => "0",);
84: my $start_page =
85: &Apache::loncommon::start_page('Course Catalog','',
86: {
87: 'add_entries' => \%add_entries,
88: 'no_inline_link' => 1,});
89: $r->print($start_page);
90: &Apache::lonhtmlcommon::add_breadcrumb
91: ({href=>"/adm/coursecatalog",
92: text=>"Select courses"},
93: {href=>"javascript:document.$formname.submit()",
94: text=>"Course listing"},
95: {text=>"Course details"});
96: $r->print(&Apache::lonhtmlcommon::breadcrumbs('Course Details'));
97: $r->print('<br />'.&mt('Detailed course information:').'<br /><br />'.
98: '<form name="coursecatalog" method="post">'.
99: &print_course_listing($codedom).'<br /><br />');
100: $r->print('<a href = "javascript:document.coursecatalog.submit()">'.
101: &mt('Back to course listing').'</a>'.
102: '<input type="hidden" name="sortby" value="'.
103: $env{'form.sortby'}.'" />'.
104: '<input type="hidden" name="state" value="listing" /></form>');
105: }
106:
107: sub course_selector {
108: my ($r,$codedom,$formname,$domdesc) = @_;
109: my %coursecodes = ();
110: my %codes = ();
111: my @codetitles = ();
112: my %cat_titles = ();
113: my %cat_order = ();
114: my %idlist = ();
115: my %idnums = ();
116: my %idlist_titles = ();
117: my %by_year;
118: my %by_sem;
119: my %by_dept;
120: my %cat_items;
121: my $caller = 'global';
122: my $format_reply;
123: my $totcodes = 0;
124: my $jscript = '';
125: my ($numtitles,$lasttitle);
126: $totcodes = &Apache::courseclassifier::retrieve_instcodes(\%coursecodes,$codedom,$totcodes);
127: if ($totcodes > 0) {
128: $format_reply = &Apache::lonnet::auto_instcode_format($caller,$codedom,\%coursecodes,\%codes,\@codetitles,\%cat_titles,\%cat_order);
129: if ($format_reply eq 'ok') {
130: my $numtypes = @codetitles;
131: &Apache::courseclassifier::build_code_selections(\%codes,\@codetitles,\%cat_titles,\%cat_order,\%idlist,\%idnums,\%idlist_titles);
132: my ($scripttext,$longtitles) = &Apache::courseclassifier::javascript_definitions(\@codetitles,\%idlist,\%idlist_titles,\%idnums,\%cat_titles);
133: my $longtitles_str = join('","',@{$longtitles});
134: my $allidlist = $idlist{$codetitles[0]};
135: $numtitles = @codetitles;
136: $lasttitle = $numtitles;
137: if ($numtitles > 4) {
138: $lasttitle = 4;
139: }
140: my @data = ('top');
141: for (my $k=0; $k<$lasttitle; $k++) {
142: my $cat = $codetitles[$k];
143: my $level = 1;
144: $level = &recurse_options($codetitles[$k],$idlist{$codetitles[$k]},$level,$cat,\%cat_items,\@data,\%by_year,\%by_sem,\%by_dept); }
145: $scripttext .= &build_javascript(\%by_year,\%by_sem,\%by_dept,\%cat_order,\@codetitles);
146: $jscript .= &javascript_select_filler($formname,$scripttext,\@codetitles,$longtitles_str,$allidlist);
147: }
148: if ($env{'form.state'} eq 'listing') {
149: $jscript .= '
150: function setElements() {
151: ';
152: for (my $i=0; $i<@codetitles-1; $i++) {
153: if ($env{'form.'.$codetitles[$i]} != -1) {
154: $jscript .= '
155: for (var j=0; j<document.'.$formname.'.'.$codetitles[$i].'.length; j++) {
156: if (document.'.$formname.'.'.$codetitles[$i].'[j].value == "'.$env{'form.'.$codetitles[$i]}.'") {
157: document.'.$formname.'.'.$codetitles[$i].'.selectedIndex = j;
158: }
159: }
160: ';
161: }
162: }
163: $jscript .= ' courseSet()'."\n";
164: if ($env{'form.'.$codetitles[-1]} != -1) {
165: $jscript .= '
166: for (var j=0; j<document.'.$formname.'.'.$codetitles[-1].'.length; j++) {
167: if (document.'.$formname.'.'.$codetitles[-1].'[j].value == "'.$env{'form.'.$codetitles[-1]}.'") {
168: document.'.$formname.'.'.$codetitles[-1].'.selectedIndex = j;
169: }
170: }
171: ';
172: }
173: $jscript .= '}';
174: $jscript .= qq|
175: function changeSort(caller) {
176: document.$formname.sortby.value = caller;
177: document.$formname.submit();
178: }
179: function setCourseId(caller) {
180: document.$formname.coursenum.value = caller;
181: document.$formname.submit();
182: }\n|;
183: }
184: my $js = '<script type"text/javascript">'."\n$jscript\n".
185: '</script>';
186: my %add_entries = (topmargin => "0",
187: marginheight => "0",);
188: if ($env{'form.state'} eq 'listing') {
189: $add_entries{'onLoad'} = 'setElements()';
190: }
191: my $start_page =
192: &Apache::loncommon::start_page('Course Catalog',$js,
193: {
194: 'add_entries' => \%add_entries,
195: 'no_inline_link' => 1,});
196: $r->print($start_page);
197: if ($env{'form.state'} eq 'listing') {
198: &Apache::lonhtmlcommon::add_breadcrumb
199: ({href=>"/adm/coursecatalog",
200: text=>"Select courses"},
201: {text=>"Course listing"});
202: $r->print(&Apache::lonhtmlcommon::breadcrumbs('Course Listing'));
203: } else {
204: &Apache::lonhtmlcommon::add_breadcrumb
205: ({href=>"/adm/coursecatalog",
206: text=>"Select courses"});
207: $r->print(&Apache::lonhtmlcommon::breadcrumbs('Select courses'));
208: }
209: $r->print('<h3>'.&mt('Display information about official [_1] classes for which LON-CAPA courses have been created:',$domdesc).'</h3>');
210: $r->print(&mt('<b>Choose which course(s) to list.</b><br />'));
211: $r->print('<form name="coursecatalog" method="post">');
212: if ($numtitles > 0) {
213: $r->print('<table><tr>');
214: for (my $k=0; $k<$lasttitle-1; $k++) {
215: my @unsorted = @{$cat_items{$codetitles[$k]}};
216: my @items;
217: &Apache::courseclassifier::sort_cats($k,\%cat_order,\@codetitles,\@unsorted,\@items);
218: my @longitems;
219: if (defined($cat_titles{$codetitles[$k]})) {
220: foreach my $item (@items) {
221: push(@longitems,$cat_titles{$codetitles[$k]}{$item});
222: }
223: } else {
224: @longitems = @items;
225: }
226: $r->print('<td align="center">'.$codetitles[$k].'<br />'."\n".
227: '<select name="'.$codetitles[$k].'" onChange="courseSet()"');
228: $r->print('>'."\n".'<option value="0" />All'."\n");
229: for (my $i=0; $i<@items; $i++) {
230: if ($longitems[$i] eq '') {
231: $longitems[$i] = $items[$i];
232: }
233: $r->print(' <option value="'.$items[$i].'">'.$longitems[$i].'</option>');
234: }
235: $r->print('</select></td>');
236: }
237: $r->print('<td align="center">'.$codetitles[$lasttitle-1].'<br />'."\n".
238: '<select name="'.$codetitles[$lasttitle-1].'">'."\n".
239: '<option value="0">All'."\n".
240: '</option>'."\n".'</select>'."\n".
241: '</td>'
242: );
243: if (&user_is_dc($codedom)) {
244: my $showdetails_status;
245: if ($env{'form.showdetails'}) {
246: $showdetails_status = 'checked="checked" ';
247: }
248: $r->print('<td></td><td><input type="checkbox" name="showdetails" value="1" '.$showdetails_status.'/>'.&mt('Show full details for each course (DC only)').'</td>');
249: }
250: $r->print('</tr></table>');
251: if ($numtitles > 4) {
252: $r->print('<br /><br />'.$codetitles[$numtitles-1].'<br />'."\n".
253: '<input type="text" name="'.$codetitles[$numtitles-1].'" /><br />'."\n");
254: }
255: }
256: $r->print('<br /><input type="hidden" name="coursenum" value="" /><input type="hidden" name="state" value="listing" /><input type="hidden" name="sortby" value="" /><input type="submit" name="catalogfilter" value="'.&mt('Display courses').'" /></form>');
257: } else {
258: $r->print(&Apache::loncommon::start_page('Course Catalog','',
259: {
260: 'no_inline_link' => 1,}));
261: $r->print('<br />'.&mt('No official courses to display for [_1].',$domdesc));
262: }
263: return;
264: }
265:
266: sub user_is_dc {
267: my ($codedom) = @_;
268: if (exists($env{'user.role.dc./'.$codedom.'/'})) {
269: my $livedc = 1;
270: my $now = time;
271: my ($start,$end)=split(/\./,$env{'user.role.dc./'.$codedom.'/'});
272: if ($start && $start>$now) { $livedc = 0; }
273: if ($end && $end <$now) { $livedc = 0; }
274: return $livedc;
275: }
276: return;
277: }
278:
279: sub recurse_options {
280: my ($currkey,$currlist,$level,$cat,$cat_options,$data,$by_year,$by_sem,$by_dept) = @_;
281: if (ref($currlist) eq 'HASH') {
282: $level ++;
283: foreach my $key (sort(keys(%{$currlist}))) {
284: $$data[$level-1]= $key;
285: &recurse_options($key,$currlist->{$key},$level,$cat,$cat_options,$data,$by_year,$by_sem,$by_dept);
286: }
287: } else {
288: $level --;
289: my @contents = split(/","/,$currlist);
290: foreach my $item (@contents) {
291: if (!grep(/^\Q$item\E$/,@{$cat_options->{$cat}})) {
292: push(@{$cat_options->{$cat}},$item);
293: }
294: if ($level == 3) {
295: if (!grep/^\Q$item\E$/,@{$by_year->{$data->[1]}->{$currkey}}) {
296: push(@{$by_year->{$data->[1]}->{$currkey}},$item);
297: }
298: if (!grep/^\Q$item\E$/,@{$by_sem->{$data->[2]}->{$currkey}}) {
299: push(@{$by_sem->{$data->[2]}->{$currkey}},$item);
300: }
301: if (!grep/^\Q$item\E$/,@{$by_dept->{$currkey}}) {
302: push(@{$by_dept->{$currkey}},$item);
303: }
304:
305: }
306: }
307: }
308: return $level;
309: }
310:
311: sub build_javascript {
312: my ($by_year,$by_sem,$by_dept,$cat_order,$codetitles) = @_;
313: my @unsorted = keys(%{$by_year});
314: my @sorted_yrs;
315: &Apache::courseclassifier::sort_cats('0',$cat_order,$codetitles,\@unsorted,\@sorted_yrs);
316: my $output = 'var idcse_by_yr_year = new Array("'.join('","',@sorted_yrs).'");'."\n".
317: 'var idcse_by_yr_dept = new Array('.scalar(@sorted_yrs).');'."\n".
318: 'var idcse_by_yr_num = new Array('.scalar(@sorted_yrs).');'."\n";
319: for (my $i=0; $i<@sorted_yrs; $i++) {
320: my $numkeys = keys(%{$by_year->{$sorted_yrs[$i]}});
321: $output .= " idcse_by_yr_num[$i] = new Array($numkeys);\n";
322: if (ref($by_year->{$sorted_yrs[$i]}) eq 'HASH') {
323: @unsorted = keys(%{$by_year->{$sorted_yrs[$i]}});
324: my @sorted_depts;
325: &Apache::courseclassifier::sort_cats('2',$cat_order,$codetitles,\@unsorted,\@sorted_depts);
326: $output .= qq| idcse_by_yr_dept[$i] = new Array ("|.join('","',@sorted_depts).'");'."\n";
327: for (my $j=0; $j<@sorted_depts; $j++) {
328: $output .= qq| idcse_by_yr_num[$i][$j] = new Array ("|;
329: $output .= join('","',sort(@{$by_year->{$sorted_yrs[$i]}->{$sorted_depts[$j]}})).'");'."\n";
330: }
331: }
332: }
333: @unsorted = keys(%{$by_sem});
334: my @sorted_sems;
335: &Apache::courseclassifier::sort_cats('1',$cat_order,$codetitles,\@unsorted,\@sorted_sems);
336: $output .= 'idcse_by_sem_sems = new Array("'.join('","',@sorted_sems).'");'."\n".
337: 'idcse_by_sem_dept = new Array('.scalar(@sorted_sems).');'."\n".
338: 'idcse_by_sem_num = new Array('.scalar(@sorted_sems).');'."\n";
339: for (my $i=0; $i<@sorted_sems; $i++) {
340: my $numkeys = keys(%{$by_sem->{$sorted_sems[$i]}});
341: $output .= " idcse_by_sem_num[$i] = new Array($numkeys);\n";
342: if (ref($by_sem->{$sorted_sems[$i]}) eq 'HASH') {
343: @unsorted = keys(%{$by_sem->{$sorted_sems[$i]}});
344: my @sorted_depts;
345: &Apache::courseclassifier::sort_cats('2',$cat_order,$codetitles,\@unsorted,\@sorted_depts);
346: $output .= qq| idcse_by_sem_dept[$i] = new Array("|.join('","',@sorted_depts).'");'."\n";
347: for (my $j=0; $j<@sorted_depts; $j++) {
348: $output .= qq| idcse_by_sem_num[$i][$j] = new Array ("|.join('","',sort(@{$by_sem->{$sorted_sems[$i]}->{$sorted_depts[$j]}})).'");'."\n";
349: }
350: }
351: }
352: @unsorted = keys(%{$by_dept});
353: my @sorted_deps;
354: &Apache::courseclassifier::sort_cats('2',$cat_order,$codetitles,\@unsorted,\@sorted_deps);
355: $output .= 'idcse_by_dep = new Array('.scalar(@sorted_deps).');'."\n";
356: for (my $k=0; $k<@sorted_deps; $k++) {
357: $output .= qq| idcse_by_dep[$k] = new Array ("|.join('","',sort(@{$by_dept->{$sorted_deps[$k]}})).'");'."\n";
358: }
359: return $output;
360: }
361:
362: sub search_courselist {
363: my ($domain) = @_;
364: my ($instcode,%codedefaults,@code_order);
365: my $defaults_result =
366: &Apache::lonnet::auto_instcode_defaults($domain,\%codedefaults,
367: \@code_order);
368: if ($defaults_result eq 'ok') {
369: $instcode ='^';
370: foreach my $item (@code_order) {
371: if ($env{'form.'.$item} eq '0' ) {
372: $instcode .= $codedefaults{$item};
373: } else {
374: $instcode .= $env{'form.'.$item};
375: }
376: }
377: $instcode .= '$';
378: } else {
379: $instcode = '.';
380: }
381: my %courses = &Apache::lonnet::courseiddump($domain,'.',1,$instcode,'.','.',
382: undef,undef,'Course',1);
383: return %courses;
384: }
385:
386:
387: sub print_course_listing {
388: my ($domain) = @_;
389: my $output;
390: my %courses;
391: my $knownuser = &user_is_known();
392: my $details = $env{'form.coursenum'};
393: if (&user_is_dc($domain)) {
394: if ($env{'form.showdetails'}) {
395: $details = 1;
396: }
397: }
398: if ($env{'form.coursenum'} ne '') {
399: %courses = &Apache::lonnet::courseiddump($domain,'.',1,'.','.',
400: $env{'form.coursenum'},
401: undef,undef,'Course');
402: if (keys(%courses) == 0) {
403: $output .= &mt('The courseID provided does not match a course in this domain.');
404: return $output;
405: }
406: } else {
407: %courses = &search_courselist($domain);
408: if (keys(%courses) == 0) {
409: $output = &mt('No courses match the criteria you selected.');
410: return $output;
411: }
412: if ($knownuser && !$env{'form.showdetails'}) {
413: $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 />');
414: }
415: }
416: $output .= &construct_data_table($knownuser,\%courses,$details);
417: $output .= &Apache::lonhtmlcommon::echo_form_input(['coursenum','state','catalogfilter','sortby','showdetails']);
418: return $output;
419: }
420:
421: sub construct_data_table {
422: my ($knownuser,$courses,$details,$usersections) = @_;
423: my %sortname;
424: if (($details eq '') || ($env{'form.showdetails'})) {
425: $sortname{'Code'} = 'code';
426: $sortname{'Title'} = 'title';
427: $sortname{'Owner'} = 'owner';
428: }
429: my $output = &Apache::loncommon::start_data_table().
430: &Apache::loncommon::start_data_table_header_row();
431: my @coltitles = ('Code','Sections','Crosslisted','Title','Owner');
432: if (ref($usersections) eq 'HASH') {
433: $coltitles[1] = 'Your Section';
434: }
435: foreach my $item (@coltitles) {
436: $output .= '<th>';
437: if (defined($sortname{$item})) {
438: $output .= '<a href="javascript:changeSort('."'$sortname{$item}'".')">'.&mt($item).'</a>';
439: } else {
440: $output .= &mt($item);
441: }
442: $output .= '</th>';
443: }
444: if ($knownuser) {
445: if ($details) {
446: $output .=
447: '<th>'.&mt('Default Access Dates for Students').'</th>'.
448: '<th>'.&mt('Student Counts').'</th>'.
449: '<th>'.&mt('Auto-enrollment of <br />registered students').'</th>';
450: } else {
451: $output .= '<th> </th>';
452: }
453: }
454: &Apache::loncommon::end_data_table_header_row();
455: my %courseinfo = &build_courseinfo_hash($courses,$knownuser,$details,
456: $usersections);
457: my %Sortby;
458: foreach my $course (sort(keys(%{$courses}))) {
459: if ($env{'form.sortby'} eq 'code') {
460: push(@{$Sortby{$courseinfo{$course}{'code'}}},$course);
461: } elsif ($env{'form.sortby'} eq 'owner') {
462: push(@{$Sortby{$courseinfo{$course}{'ownerlastname'}}},$course);
463: } else {
464: push(@{$Sortby{$courseinfo{$course}{'title'}}},$course);
465: }
466: }
467: my @sorted_courses;
468: if (($env{'form.sortby'} eq 'code') || ($env{'form.sortby'} eq 'owner')) {
469: @sorted_courses = sort(keys(%Sortby));
470: } else {
471: @sorted_courses = sort { lc($a) cmp lc($b) } (keys(%Sortby));
472: }
473: foreach my $item (@sorted_courses) {
474: foreach my $course (@{$Sortby{$item}}) {
475: $output.=&Apache::loncommon::start_data_table_row();
476: $output.=&courseinfo_row($courseinfo{$course},$knownuser,$details);
477: $output.=&Apache::loncommon::end_data_table_row();
478: }
479: }
480: $output .= &Apache::loncommon::end_data_table();
481: return $output;
482: }
483:
484: sub build_courseinfo_hash {
485: my ($courses,$knownuser,$details,$usersections) = @_;
486: my %courseinfo;
487: my $now = time;
488: foreach my $course (keys(%{$courses})) {
489: my $descr;
490: if ($courses->{$course} =~ m/^([^:]*):/i) {
491: $descr = &unescape($1);
492: } else {
493: $descr = &unescape($courses->{$course});
494: }
495: my $cleandesc=&HTML::Entities::encode($descr,'<>&"');
496: $cleandesc=~s/'/\\'/g;
497: $cleandesc =~ s/^\s+//;
498: my ($cdom,$cnum)=split(/\_/,$course);
499:
500: my ($desc,$instcode,$owner,$ttype) = split(/:/,$courses->{$course});
501: $owner = &unescape($owner);
502: my ($ownername,$ownerdom);
503: if ($owner =~ /:/) {
504: ($ownername,$ownerdom) = split(/:/,$owner);
505: } else {
506: $ownername = $owner;
507: if ($owner ne '') {
508: $ownerdom = $cdom;
509: }
510: }
511: my %ownernames;
512: if ($ownername ne '' && $ownerdom ne '') {
513: %ownernames = &Apache::loncommon::getnames($ownername,$ownerdom);
514: }
515: $courseinfo{$course}{'cdom'} = $cdom;
516: $courseinfo{$course}{'cnum'} = $cnum;
517: $courseinfo{$course}{'code'} = $instcode;
518: $courseinfo{$course}{'ownerlastname'} = $ownernames{'lastname'};
519: $courseinfo{$course}{'title'} = $cleandesc;
520: $courseinfo{$course}{'owner'} = $owner;
521:
522: my %coursehash = &Apache::lonnet::dump('environment',$cdom,$cnum);
523: my @classids;
524: my @crosslistings;
525: my ($seclist,$numsec) =
526: &identify_sections($coursehash{'internal.sectionnums'});
527: if (ref($usersections) eq 'HASH') {
528: if (ref($usersections->{$course}) eq 'ARRAY') {
529: $seclist = join(', ',@{$usersections->{$course}});
530: }
531: }
532: $courseinfo{$course}{'seclist'} = $seclist;
533: my ($xlist_items,$numxlist) =
534: &identify_sections($coursehash{'internal.crosslistings'});
535: my $showsyllabus = 1; # default is to include a syllabus link
536: if (defined($coursehash{'showsyllabus'})) {
537: $showsyllabus = $coursehash{'showsyllabus'};
538: }
539: $courseinfo{$course}{'showsyllabus'} = $showsyllabus;
540: if (((defined($env{'form.coursenum'}) && ($cnum eq $env{'form.coursenum'}))) ||
541: ($knownuser && ($details == 1))) {
542: $courseinfo{$course}{'counts'} = &count_students($cdom,$cnum,$numsec);
543: $courseinfo{$course}{'autoenrollment'} =
544: &autoenroll_info(\%coursehash,$now,$seclist,$xlist_items,
545: $instcode,$owner,$cdom,$cnum);
546:
547: my $startaccess = '';
548: my $endaccess = '';
549: my $accessdates;
550: if ( defined($coursehash{'default_enrollment_start_date'}) ) {
551: $startaccess = &Apache::lonlocal::locallocaltime($coursehash{'default_enrollment_start_date'});
552: }
553: if ( defined($coursehash{'default_enrollment_end_date'}) ) {
554: $endaccess = &Apache::lonlocal::locallocaltime($coursehash{'default_enrollment_end_date'});
555: if ($coursehash{'default_enrollment_end_date'} == 0) {
556: $endaccess = "No ending date";
557: }
558: }
559: if ($startaccess) {
560: $accessdates .= &mt('<i>From:</i> ').$startaccess.'<br />';
561: }
562: if ($endaccess) {
563: $accessdates .= &mt('<i>To:</i> ').$endaccess.'<br />';
564: }
565: $courseinfo{$course}{'access'} = $accessdates;
566: }
567: if ($xlist_items eq '') {
568: $xlist_items = &mt('No');
569: }
570: $courseinfo{$course}{'xlist'} = $xlist_items;
571: }
572: return %courseinfo;
573: }
574:
575: sub count_students {
576: my ($cdom,$cnum,$numsec) = @_;
577: my $classlist = &Apache::loncoursedata::get_classlist($cdom,$cnum);
578: my %student_count = (
579: Active => 0,
580: Future => 0,
581: Expired => 0,
582: );
583: my %idx;
584: $idx{'status'} = &Apache::loncoursedata::CL_STATUS();
585: my %status_title = &Apache::lonlocal::texthash(
586: Expired => 'Previous access',
587: Active => 'Current access',
588: Future => 'Future access',
589: );
590:
591: while (my ($student,$data) = each(%$classlist)) {
592: $student_count{$data->[$idx{'status'}]} ++;
593: }
594:
595: my $countslist = &mt('[quant,_1,section]',$numsec).':<br />';
596: foreach my $status ('Active','Future') {
597: $countslist .= '<nobr>'.$status_title{$status}.': '.
598: $student_count{$status}.'</nobr><br />';
599: }
600: return $countslist;
601: }
602:
603: sub courseinfo_row {
604: my ($info,$knownuser,$details) = @_;
605: my ($cdom,$cnum,$title,$ownerlast,$code,$owner,$seclist,$xlist_items,
606: $accessdates,$showsyllabus,$counts,$autoenrollment,$output);
607: if (ref($info) eq 'HASH') {
608: $cdom = $info->{'cdom'};
609: $cnum = $info->{'cnum'};
610: $title = $info->{'title'};
611: $ownerlast = $info->{'ownerlastname'};
612: $code = $info->{'code'};
613: $owner = $info->{'owner'};
614: $seclist = $info->{'seclist'};
615: $xlist_items = $info->{'xlist'};
616: $accessdates = $info->{'access'};
617: $counts = $info->{'counts'};
618: $autoenrollment = $info->{'autoenrollment'};
619: $showsyllabus = $info->{'showsyllabus'};
620: } else {
621: $output = '<td colspan="8">'.&mt('No information available for [_1].',
622: $code).'</td>';
623: return $output;
624: }
625: $output .= '<td>'.$code.'</td>'.
626: '<td>'.$seclist.'</td>'.
627: '<td>'.$xlist_items.'</td>'.
628: '<td>'.$title.' <font size="-2">';
629: if ($showsyllabus) {
630: $output .= &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$cnum,$cdom);
631: } else {
632: $output .= ' ';
633: }
634: $output .= '</font></td>'.
635: '<td>'.$ownerlast.'</td>';
636: if ($knownuser) {
637: if ($details) {
638: $output .=
639: '<td>'.$accessdates.'</td>'.
640: '<td>'.$counts.'</td>'.
641: '<td>'.$autoenrollment.'</td>';
642: } else {
643: $output .= "<td><a href=\"javascript:setCourseId('$cnum')\">".&mt('Show more details').'</a></td>';
644: }
645: }
646: return $output;
647: }
648:
649: sub identify_sections {
650: my ($seclist) = @_;
651: my @secnums;
652: if ($seclist =~ /,/) {
653: my @sections = split(/,/,$seclist);
654: foreach my $sec (@sections) {
655: $sec =~ s/:[^:]*$//;
656: push(@secnums,$sec);
657: }
658: } else {
659: if ($seclist =~ m/^([^:]+):/) {
660: my $sec = $1;
661: if (!grep(/^\Q$sec\E$/,@secnums)) {
662: push(@secnums,$sec);
663: }
664: }
665: }
666: @secnums = sort {$a <=> $b} @secnums;
667: my $seclist = join(', ',@secnums);
668: my $numsec = @secnums;
669: return ($seclist,$numsec);
670: }
671:
672: sub get_valid_classes {
673: my ($seclist,$xlist_items,$crscode,$owner,$cdom,$cnum) = @_;
674: my $response;
675: my %validations;
676: @{$validations{'sections'}} = ();
677: @{$validations{'xlists'}} = ();
678: my $totalitems = 0;
679: if ($seclist) {
680: foreach my $sec (split(/, /,$seclist)) {
681: my $class = $crscode.$sec;
682: if (&Apache::lonnet::auto_validate_class_sec($cdom,$cnum,$owner,
683: $class) eq 'ok') {
684: if (!grep(/^\Q$sec$\E/,@{$validations{'sections'}})) {
685: push(@{$validations{'sections'}},$sec);
686: $totalitems ++;
687: }
688: }
689: }
690: }
691: if ($xlist_items) {
692: foreach my $item (split(/, /,$xlist_items)) {
693: if (&Apache::lonnet::auto_validate_class_sec($cdom,$cnum,$owner,
694: $item) eq 'ok') {
695: if (!grep(/^\Q$item$\E/,@{$validations{'xlists'}})) {
696: push(@{$validations{'xlists'}},$item);
697: $totalitems ++;
698: }
699: }
700: }
701: }
702: if ($totalitems > 0) {
703: if (@{$validations{'sections'}}) {
704: $response = &mt('Sections: ').
705: join(', ',@{$validations{'sections'}}).'<br />';
706: }
707: if (@{$validations{'xlists'}}) {
708: $response .= &mt('Courses: ').
709: join(', ',@{$validations{'xlists'}});
710: }
711: }
712: return $response;
713: }
714:
715: sub javascript_select_filler {
716: my ($formname,$scripttext,$codetitles,$longtitles_str,$allidlist) = @_;
717: my $output = <<END;
718: function courseSet() {
719: var longtitles = new Array ("$longtitles_str");
720: var valyr = document.$formname.Year.options[document.$formname.Year.selectedIndex].value
721: var valsem = document.$formname.Semester.options[document.$formname.Semester.selectedIndex].value
722: var valdept = document.$formname.Department.options[document.$formname.Department.selectedIndex].value
723: var valclass = document.$formname.Number.options[document.$formname.Number.selectedIndex].value
724: var idyears = new Array("$allidlist");
725: var idyr = -1;
726: var idsem = -1;
727: var iddept = -1;
728: document.$formname.Number.length = 0;
729:
730: $scripttext
731:
732: selYear = document.$formname.Year.selectedIndex-1;
733: selSemester = document.$formname.Semester.selectedIndex-1;
734: selDepartment = document.$formname.Department.selectedIndex-1;
735: if (selYear == -1) {
736: if (selSemester == -1) {
737: if (selDepartment > -1) {
738: document.$formname.Number.options[0] = new Option('All','0',false,false);
739: for (var k=0; k<idcse_by_dep[selDepartment].length; k++) {
740: document.$formname.Number.options[k+1] = new Option(idcse_by_dep[selDepartment][k],idcse_by_dep[selDepartment][k],false,false);
741:
742: }
743: }
744: else {
745: document.$formname.Number.options[0] = new Option("All","0",true,true);
746: }
747: }
748: else {
749: if (selDepartment > -1) {
750: for (var i=0; i<idcse_by_sem_sems.length; i++) {
751: if (idcse_by_sem_sems[i] == valsem) {
752: idsem = i;
753: }
754: }
755: if (idsem != -1) {
756: for (var i=0; i<idcse_by_sem_dept[idsem].length; i++) {
757: if (idcse_by_sem_dept[idsem][i] == valdept) {
758: iddept = i;
759: }
760: }
761: }
762: if (iddept != -1) {
763: document.$formname.Number.options[0] = new Option('All','0',false,false);
764: for (var k=0; k<idcse_by_sem_num[idsem][iddept].length; k++) {
765: document.$formname.Number.options[k+1] = new Option(idcse_by_sem_num[idsem][iddept][k],idcse_by_sem_num[idsem][iddept][k],false,false);
766: }
767: }
768: else {
769: document.$formname.Number.options[0] = new Option('No courses','0',true,true);
770: }
771: }
772: else {
773: document.$formname.Number.options[0] = new Option("All","0",true,true);
774: }
775: }
776: }
777: else {
778: if (selSemester == -1) {
779: if (selDepartment > -1) {
780: for (var i=0; i<idcse_by_yr_year.length; i++) {
781: if (idcse_by_yr_year[i] == valyr) {
782: idyr = i;
783: }
784: }
785: if (idyr != -1) {
786: for (var i=0; i<idcse_by_yr_dept[idyr].length; i++) {
787: if (idcse_by_yr_dept[idyr][i] == valdept) {
788: iddept = i;
789: }
790: }
791: }
792: if (iddept != -1) {
793: document.$formname.Number.options[0] = new Option('All','0',false,false);
794: for (var k=0; k<idcse_by_yr_num[idyr][iddept].length; k++) {
795: document.$formname.Number.options[k+1] = new Option(idcse_by_yr_num[idyr][iddept][k],idcse_by_yr_num[idyr][iddept][k],false,false);
796: }
797: }
798: else {
799: document.$formname.Number.options[0] = new Option('No courses','0',true,true);
800: }
801: }
802: else {
803: document.$formname.Number.options[0] = new Option("All","0",true,true);
804: }
805: }
806: else {
807: if (selDepartment > -1) {
808: for (var k=0; k<idyears.length; k++) {
809: if (idyears[k] == valyr) {
810: idyr = k;
811: }
812: }
813: if (idyr != -1) {
814: for (var k=0; k<idsems[idyr].length; k++) {
815: if (idsems[idyr][k] == valsem) {
816: idsem = k;
817: }
818: }
819: }
820: if (idsem != -1) {
821: for (var k=0; k<idcodes[idyr][idsem].length; k++) {
822: if (idcodes[idyr][idsem][k] == valdept) {
823: iddept = k;
824: }
825: }
826: }
827: if (iddept != -1) {
828: document.$formname.Number.options[0] = new Option('All','0',false,false);
829: for (var i=0; i<idcourses[idyr][idsem][iddept].length; i++) {
830: var display = idcourses[idyr][idsem][iddept][i];
831: if (longtitles[3] == 1) {
832: if (idcourseslongs[idyr][idsem][iddept][i] != "") {
833: display = idcourseslongs[idyr][idsem][iddept][i]
834: }
835: }
836: document.$formname.Number.options[i+1] = new Option(display,idcourses[idyr][idsem][iddept][i],false,false)
837: }
838: }
839: else {
840: document.$formname.Number.options[0] = new Option('No courses','0',true,true);
841: }
842: }
843: else {
844: document.$formname.Number.options[0] = new Option('All','0',true,true);
845: }
846: }
847: document.$formname.Number.selectedIndex = 0
848: }
849: }
850: END
851: return $output;
852: }
853:
854: sub autoenroll_info {
855: my ($coursehash,$now,$seclist,$xlist_items,$code,$owner,$cdom,$cnum) = @_;
856: my $autoenrolldates = &mt('Not enabled');
857: if (defined($coursehash->{'internal.autoadds'}) && $coursehash->{'internal.autoadds'} == 1) {
858: my ($autostart,$autoend);
859: if ( defined($coursehash->{'internal.autostart'}) ) {
860: $autostart = &Apache::lonlocal::locallocaltime($coursehash->{'internal.autostart'});
861: }
862: if ( defined($coursehash->{'internal.autoend'}) ) {
863: $autoend = &Apache::lonlocal::locallocaltime($coursehash->{'internal.autoend'});
864: }
865: if ($coursehash->{'internal.autostart'} > $now) {
866: if ($coursehash->{'internal.autoend'} && $coursehash->{'internal.autoend'} < $now) {
867: $autoenrolldates = &mt('Not enabled');
868: } else {
869: my $valid_classes =
870: &get_valid_classes($seclist,$xlist_items,$code,
871: $owner,$cdom,$cnum);
872: if ($valid_classes ne '') {
873: $autoenrolldates = &mt('Not enabled<br />Starts: ').
874: $autostart.'<br />'.$valid_classes; }
875: }
876: } else {
877: if ($coursehash->{'internal.autoend'} && $coursehash->{'internal.autoend'} < $now) {
878: $autoenrolldates = &mt('Not enabled<br />Ended: ').$autoend;
879: } else {
880: my $valid_classes = &get_valid_classes($seclist,$xlist_items,
881: $code,$owner,$cdom,$cnum);
882: if ($valid_classes ne '') {
883: $autoenrolldates = &mt('Currently enabled<br />').
884: $valid_classes;
885: }
886: }
887: }
888: }
889: return $autoenrolldates;
890: }
891:
892: sub user_is_known {
893: my $known = 0;
894: if ($env{'user.name'} ne '' && $env{'user.name'} ne 'public'
895: && $env{'user.domain'} ne '' && $env{'user.domain'} ne 'public') {
896: $known = 1;
897: }
898: return $known;
899: }
900:
901: 1;
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