1: # The LearningOnline Network
2: # Pick a course
3: #
4: # $Id: lonpickcourse.pm,v 1.47 2006/05/30 12:46:09 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::lonpickcourse;
30:
31: use strict;
32: use Apache::Constants qw(:common);
33: use Apache::loncommon;
34: use Apache::loncoursedata;
35: use Apache::lonnet;
36: use Apache::lonlocal;
37: use Apache::longroup;
38: use lib '/home/httpd/lib/perl/';
39: use LONCAPA;
40:
41: sub handler {
42: my $r = shift;
43: &Apache::loncommon::content_type($r,'text/html');
44: $r->send_http_header;
45: return OK if $r->header_only;
46:
47: # ------------------------------------------------------------ Print the screen
48:
49: # Get parameters from query string
50: &Apache::loncommon::get_unprocessed_cgi
51: ($ENV{'QUERY_STRING'},['domainfilter','descriptfilter',
52: 'sincefilter','form','cnumelement',
53: 'cdomelement','cnameelement','roleelement',
54: 'pickedcourse','instcodefilter',
55: 'ownerfilter','coursefilter','multiple']);
56: # domain filter and selection
57: my $domainfilter=$env{'form.domainfilter'};
58: $domainfilter=~s/\W//g;
59: unless ($domainfilter) { $domainfilter=''; }
60: my $domainselectform=&Apache::loncommon::select_dom_form($domainfilter,
61: 'domainfilter',1);
62: # description filter
63: my $descriptfilter=$env{'form.descriptfilter'};
64: unless ($descriptfilter) { $descriptfilter=''; }
65: my $listdescript=&HTML::Entities::encode($descriptfilter,'<>&"');
66: # institutional code filter
67: my $instcodefilter=$env{'form.instcodefilter'};
68: unless ($instcodefilter) { $instcodefilter=''; }
69: my $listinstcode=&HTML::Entities::encode($instcodefilter,'<>&"');
70: # course owner filter
71: my $ownerfilter=$env{'form.ownerfilter'};
72: unless ($ownerfilter) { $ownerfilter=''; }
73: my $listowner=&HTML::Entities::encode($ownerfilter,'<>&"');
74: # course ID filter for DCs only
75: my ($courseidtag,$coursefilter);
76: if ($env{'user.adv'} && $domainfilter && exists($env{'user.role.dc./'.
77: $domainfilter.'/'})) {
78: $coursefilter=$env{'form.coursefilter'};
79: unless ($coursefilter) { $coursefilter=''; }
80: my $listcourseid=&HTML::Entities::encode($coursefilter,'<>&"');
81: $courseidtag = &mt('LON-CAPA course ID');
82: $courseidtag .= qq|: <input type="text" name="coursefilter" size="25" value="$listcourseid" />
83: <br />
84: |;
85: }
86: # last course activity filter and selection
87: my $sincefilter=$env{'form.sincefilter'};
88: $sincefilter=~s/[^\d-]//g;
89: unless ($sincefilter) { $sincefilter=-1; }
90: my $sincefilterform=&Apache::loncommon::select_form($sincefilter,
91: 'sincefilter',('-1'=>'',
92: '86400' => 'today',
93: '604800' => 'last week',
94: '2592000' => 'last month',
95: '7776000' => 'last three months',
96: '15552000' => 'last six months',
97: '31104000' => 'last year',
98: 'select_form_order' =>
99: ['-1','86400','604800','2592000','7776000',
100: '15552000','31104000']));
101: # if called from loncreateuser, report sections, then close
102: my (%loaditem,$seclist,$groupslist);
103: my $num_sections = 0;
104: if ($env{'form.form'} eq 'cu' && $env{'form.pickedcourse'}) {
105: $loaditem{'onload'} ="setSections()";
106: my ($cdom,$cnum) = split/_/,$env{'form.pickedcourse'};
107:
108: my %sections_count = &Apache::loncommon::get_sections($cdom,$cnum);
109: my @sections = (sort {$a <=> $b} keys(%sections_count));
110: $seclist = join('","',@sections);
111:
112: my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum);
113: $groupslist = join(',',sort(keys(%curr_groups)));
114: }
115: my $jscript;
116: my $title = 'Selecting a course';
117: # Setup for multiple course selections, if flag for multiples set.
118: my $multiple = $env{'form.multiple'};
119: my $multelement;
120: if ($multiple) {
121: $title = 'Selecting course(s)';
122: $jscript = &Apache::loncommon::check_uncheck_jscript();
123: $multelement = '<input type="hidden" name="multiple" value="'.$multiple.'" />';
124: }
125: $r->print(&Apache::loncommon::start_page($title,undef,
126: {'add_entries' => \%loaditem,
127: 'no_nav_bar' => 1, }));
128: my %lt=&Apache::lonlocal::texthash(
129: 'cac' => 'Course Activity',
130: 'cde' => 'Course Description',
131: 'cdo' => 'Course Domain',
132: 'cin' => 'Course Institutional Code',
133: 'cow' => "Course Owner's Username");
134: my ($name_code,$name_input);
135: if (defined($env{'form.cnameelement'}) && $env{'form.cnameelement'} ne '') {
136: $name_code = "opener.document.$env{'form.form'}.$env{'form.cnameelement'}.value=cdesc;";
137: $name_input ='<input type="hidden" name="cnameelement" value="'.
138: $env{'form.cnameelement'}.'" />';
139: }
140: my $submitopener = '';
141: my $autosubmit = '';
142: my $roleelement = '';
143: my $lastaction = 'self.close()';
144: if ($env{'form.form'} eq 'cu') {
145: $lastaction = 'document.courselist.pickedcourse.value = cdom+"_"+cname;'."\n".
146: 'document.courselist.submit();';
147: }
148: my $roledom = $env{'form.roleelement'};
149: if ($roledom) {
150: $roleelement = '<input type="hidden" name="roleelement" value="'.$roledom.'" />';
151: $submitopener = &Apache::lonroles::processpick();
152: $autosubmit = 'process_pick("'.$roledom.'")';
153: }
154: $r->print(<<ENDSCRIPT);
155: <script>
156: function gochoose(cname,cdom,cdesc,multiple,caller) {
157: var openerForm = "$env{'form.form'}";
158: courseCount = 0;
159: var courses = '';
160: if (multiple) {
161: if (typeof(document.courselist.course_id.length) == 'undefined') {
162: // only 1 course checkbox was created
163: if (document.courselist.course_id.checked) {
164: courses = courses + document.courselist.course_id.value + "&&";
165: courseCount ++;
166: }
167: } else {
168: for (var j=0; j<document.courselist.course_id.length; j++) {
169: if (document.courselist.course_id[j].checked) {
170: courses = courses + document.courselist.course_id[j].value + "&&";
171: courseCount ++;
172: }
173: }
174: }
175: opener.document.$env{'form.form'}.coursetotal.value = courseCount;
176: if (typeof(opener.document.$env{'form.form'}.coursepick.length) ==
177: 'undefined') {
178: if (opener.document.$env{'form.form'}.coursepick.value == 'specific') {
179: opener.document.$env{'form.form'}.coursepick.checked = true;
180: } else {
181: opener.document.$env{'form.form'}.coursepick.checked = false;
182: }
183: } else {
184: for (var j=0; j<opener.document.$env{'form.form'}.coursepick.length; j++) {
185: if (opener.document.$env{'form.form'}.coursepick[j].value == 'specific') {
186: opener.document.$env{'form.form'}.coursepick[j].checked = true;
187: } else {
188: opener.document.$env{'form.form'}.coursepick[j].checked = false;
189: }
190: }
191: }
192: if (courseCount > 0) {
193: courses = courses.substr(0,courses.length-2);
194: opener.document.$env{'form.form'}.courselist.value = courses;
195: }
196: } else {
197: $name_code
198: opener.document.$env{'form.form'}.$env{'form.cnumelement'}.value=cname;
199: var slct=opener.document.$env{'form.form'}.$env{'form.cdomelement'};
200: if (slct.options == undefined) {
201: opener.document.$env{'form.form'}.$env{'form.cdomelement'}.value=cdom;
202: }
203: else {
204: var i;
205: for (i=0;i<slct.length;i++) {
206: if (slct.options[i].value==cdom) { slct.selectedIndex=i; }
207: }
208: }
209: }
210: $autosubmit
211: $lastaction
212: }
213:
214: function setSections() {
215: var numSections = $num_sections
216: var sectionsArray = new Array("$seclist")
217: opener.document.$env{"form.form"}.currsec.length = 0
218: if (numSections == 0) {
219: opener.document.$env{"form.form"}.currsec.multiple=false
220: opener.document.$env{"form.form"}.currsec.size=1;
221: opener.document.$env{"form.form"}.currsec.options[0] = new Option('No existing sections','',false,false)
222: } else {
223: if (numSections == 1) {
224: opener.document.$env{"form.form"}.currsec.multiple=false;
225: opener.document.$env{"form.form"}.currsec.size=1;
226: opener.document.$env{"form.form"}.currsec.options[0] = new Option('Select','',true,true);
227: opener.document.$env{"form.form"}.currsec.options[1] = new Option('No section','',false,false)
228: opener.document.$env{"form.form"}.currsec.options[2] = new Option(sectionsArray[0],sectionsArray[0],false,false);
229: } else {
230: for (var i=0; i<numSections; i++) {
231: opener.document.$env{"form.form"}.currsec.options[i] = new Option(sectionsArray[i],sectionsArray[i],false,false)
232: }
233: opener.document.$env{"form.form"}.currsec.multiple=true
234: if (numSections < 3) {
235: opener.document.$env{"form.form"}.currsec.size=numSections;
236: } else {
237: opener.document.$env{"form.form"}.currsec.size=3;
238: }
239: opener.document.$env{"form.form"}.currsec.options[0].selected = false
240: }
241: }
242: opener.document.$env{"form.form"}.groups.value='$groupslist';
243: self.close()
244: }
245:
246: $jscript
247: </script>
248: $submitopener
249: <form method="post" name="filterpicker">
250: <input type="hidden" name="cnumelement" value="$env{'form.cnumelement'}" />
251: <input type="hidden" name="cdomelement" value="$env{'form.cdomelement'}" />
252: $name_input
253: <input type="hidden" name="form" value="$env{'form.form'}" />
254: $roleelement
255: $multelement
256: $lt{'cac'}: $sincefilterform
257: <br />
258: $lt{'cdo'}: $domainselectform
259: <br />
260: $lt{'cin'}:
261: <input type="text" name="instcodefilter" size="10" value="$listinstcode" />
262: <br />
263: $lt{'cow'}:
264: <input type="text" name="ownerfilter" size="10" value="$listowner" />
265: <br />
266: $courseidtag
267: $lt{'cde'}:
268: <input type="text" name="descriptfilter" size="40" value="$listdescript" />
269: <p><input type="submit" name="gosearch" value="Search" /></p>
270: </form>
271: <hr />
272: ENDSCRIPT
273: # ---------------------------------------------------------------- Get the data
274: if ($env{'form.gosearch'}) {
275: $r->print(&mt('Searching').' ...<br /> <br />');
276: $r->rflush();
277: unless ($descriptfilter) { $descriptfilter='.'; }
278: unless ($instcodefilter) { $instcodefilter='.'; }
279: unless ($ownerfilter) { $ownerfilter='.'; }
280: unless ($coursefilter) { $coursefilter='.'; }
281: my $timefilter=($sincefilter==-1?1:time-$sincefilter);
282: my %courses=
283: &Apache::lonnet::courseiddump
284: ($domainfilter,$descriptfilter,$timefilter,$instcodefilter,$ownerfilter,$coursefilter);
285: $r->print('<form name="courselist">');
286: my %by_descrip;
287: my $numcourses = keys(%courses);
288: foreach my $course (keys(%courses)) {
289: my $descr;
290: if ($courses{$course} =~ m/^([^:]*):/i) {
291: $descr = &unescape($1);
292: } else {
293: $descr = &unescape($courses{$course});
294: }
295: my $description = $descr;
296: push (@{$by_descrip{$description}}, $course);
297: }
298: if ($numcourses > 1 && $multiple) {
299: $r->print('<input type="button" value="check all"
300: onclick="javascript:checkAll(document.courselist.course_id)" /> <input type="button" value="uncheck all"
301: onclick="javascript:uncheckAll(document.courselist.course_id)" />
302: <br /><br />');
303: }
304: foreach my $description (sort
305: { lc($a) cmp lc($b) } (keys(%by_descrip))) {
306: foreach my $course (@{$by_descrip{$description}}) {
307: my $cleandesc=&HTML::Entities::encode($description,'<>&"');
308: $cleandesc=~s/'/\\'/g;
309: my ($cdom,$cnum)=split(/\_/,$course);
310: my ($descr,$instcode,$owner) = split/:/,$courses{$course};
311: $r->print(&course_chooser($multiple,$cdom,$cnum,$cleandesc));
312: $r->print($description.'('.
313: ($Apache::lonnet::domaindescription{$cdom}?
314: $Apache::lonnet::domaindescription{$cdom}:$cdom).")");
315: unless ($instcode eq '') {
316: $r->print(" - ".&unescape($instcode));
317: }
318: unless ($owner eq '') {
319: $r->print(", owner - ".&unescape($owner));
320: }
321: if ($multiple) { $r->print("</label>\n"); }
322: $r->print("<br />\n");
323: }
324: }
325: if (!%courses) {
326: $r->print(&mt('None found'));
327: } elsif ($multiple) {
328: $r->print('<input type="button" value="Submit" onClick="gochoose('."'','','',1)".'" />');
329: }
330: $r->print('<input type="hidden" name="form" value="'.$env{'form.form'}.'" />'."\n".
331: '<input type="hidden" name="pickedcourse" value="" />'."\n".
332: '<input type="hidden" name="cnumelement" value="'.$env{'form.cnumelement'}.'" />'."\n".
333: '<input type="hidden" name="cdomelement" value="'.$env{'form.cdomelement'}.'" />'."\n");
334: if ((exists($env{'form.roleelement'})) && ($env{'form.form'} eq 'rolechoice')) {
335: $r->print('<input type="hidden" name="roleelement" value="'.$env{'form.roleelement'}.'" />'."\n");
336: }
337: $r->print("</form>\n");
338: }
339: $r->print(&Apache::loncommon::end_page());
340: return OK;
341: }
342:
343: sub course_chooser {
344: my ($multiple,$cdom,$cnum,$cleandesc) = @_;
345: my $output;
346: if ($multiple) {
347: $output = '<label><input type="checkbox" name="course_id" value="'.$cdom.'_'.$cnum.'" />'."\n";
348: } else {
349: $output = '<input type="button" value="Select" onClick="gochoose('.
350: "'".$cnum."','".$cdom."','".$cleandesc."')".'" />'."\n";
351: }
352: return $output;
353: }
354:
355: 1;
356: __END__
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