1: # The LearningOnline Network
2: # Pick a course
3: #
4: # $Id: lonpickcourse.pm,v 1.43 2006/05/08 21:40:20 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::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:
38: sub handler {
39: my $r = shift;
40: &Apache::loncommon::content_type($r,'text/html');
41: $r->send_http_header;
42: return OK if $r->header_only;
43:
44: # ------------------------------------------------------------ Print the screen
45:
46: # Get parameters from query string
47: &Apache::loncommon::get_unprocessed_cgi
48: ($ENV{'QUERY_STRING'},['domainfilter','descriptfilter',
49: 'sincefilter','form','cnumelement',
50: 'cdomelement','cnameelement','roleelement',
51: 'pickedcourse','instcodefilter',
52: 'ownerfilter','coursefilter','multiple']);
53: # domain filter and selection
54: my $domainfilter=$env{'form.domainfilter'};
55: $domainfilter=~s/\W//g;
56: unless ($domainfilter) { $domainfilter=''; }
57: my $domainselectform=&Apache::loncommon::select_dom_form($domainfilter,
58: 'domainfilter',1);
59: # description filter
60: my $descriptfilter=$env{'form.descriptfilter'};
61: unless ($descriptfilter) { $descriptfilter=''; }
62: my $listdescript=&HTML::Entities::encode($descriptfilter,'<>&"');
63: # institutional code filter
64: my $instcodefilter=$env{'form.instcodefilter'};
65: unless ($instcodefilter) { $instcodefilter=''; }
66: my $listinstcode=&HTML::Entities::encode($instcodefilter,'<>&"');
67: # course owner filter
68: my $ownerfilter=$env{'form.ownerfilter'};
69: unless ($ownerfilter) { $ownerfilter=''; }
70: my $listowner=&HTML::Entities::encode($ownerfilter,'<>&"');
71: # course ID filter for DCs only
72: my ($courseidtag,$coursefilter);
73: if ($env{'user.adv'} && $domainfilter && exists($env{'user.role.dc./'.
74: $domainfilter.'/'})) {
75: $coursefilter=$env{'form.coursefilter'};
76: unless ($coursefilter) { $coursefilter=''; }
77: my $listcourseid=&HTML::Entities::encode($coursefilter,'<>&"');
78: $courseidtag = &mt('LON-CAPA course ID');
79: $courseidtag .= qq|: <input type="text" name="coursefilter" size="25" value="$listcourseid" />
80: <br />
81: |;
82: }
83: # last course activity filter and selection
84: my $sincefilter=$env{'form.sincefilter'};
85: $sincefilter=~s/[^\d-]//g;
86: unless ($sincefilter) { $sincefilter=-1; }
87: my $sincefilterform=&Apache::loncommon::select_form($sincefilter,
88: 'sincefilter',('-1'=>'',
89: '86400' => 'today',
90: '604800' => 'last week',
91: '2592000' => 'last month',
92: '7776000' => 'last three months',
93: '15552000' => 'last six months',
94: '31104000' => 'last year',
95: 'select_form_order' =>
96: ['-1','86400','604800','2592000','7776000',
97: '15552000','31104000']));
98: # if called from loncreateuser, report sections, then close
99: my (%loaditem,$seclist,$groupslist);
100: my $num_sections = 0;
101: if ($env{'form.form'} eq 'cu' && $env{'form.pickedcourse'}) {
102: $loaditem{'onload'} ="setSections()";
103: my ($cdom,$cnum) = split/_/,$env{'form.pickedcourse'};
104: my %sections_count = ();
105: $num_sections = &Apache::loncommon::get_sections($cdom,$cnum,\%sections_count);
106: my @sections = ();
107: if ($num_sections > 0) {
108: @sections = (sort {$a <=> $b} keys(%sections_count));
109: $seclist = join('","',@sections);
110: }
111: my (%curr_groups,$numgroups);
112: $numgroups = &Apache::loncommon::coursegroups(\%curr_groups,$cdom,
113: $cnum);
114: if ($numgroups > 0) {
115: $groupslist = join(',',sort(keys(%curr_groups)));
116: }
117: }
118: my $jscript;
119: my $title = 'Selecting a course';
120: # Setup for multiple course selections, if flag for multiples set.
121: my $multiple = $env{'form.multiple'};
122: my $multelement;
123: if ($multiple) {
124: $title = 'Selecting course(s)';
125: $jscript = &Apache::loncommon::check_uncheck_jscript();
126: $multelement = '<input type="hidden" name="multiple" value="'.$multiple.'" />';
127: }
128: $r->print(&Apache::loncommon::start_page($title,undef,
129: {'add_entries' => \%loaditem,
130: 'no_nav_bar' => 1, }));
131: my %lt=&Apache::lonlocal::texthash(
132: 'cac' => 'Course Activity',
133: 'cde' => 'Course Description',
134: 'cdo' => 'Course Domain',
135: 'cin' => 'Course Institutional Code',
136: 'cow' => "Course Owner's Username");
137: my ($name_code,$name_input);
138: if (defined($env{'form.cnameelement'}) && $env{'form.cnameelement'} ne '') {
139: $name_code = "opener.document.$env{'form.form'}.$env{'form.cnameelement'}.value=cdesc;";
140: $name_input ='<input type="hidden" name="cnameelement" value="'.
141: $env{'form.cnameelement'}.'" />';
142: }
143: my $submitopener = '';
144: my $autosubmit = '';
145: my $roleelement = '';
146: my $lastaction = 'self.close()';
147: if ($env{'form.form'} eq 'cu') {
148: $lastaction = 'document.courselist.pickedcourse.value = cdom+"_"+cname;'."\n".
149: 'document.courselist.submit();';
150: }
151: my $roledom = $env{'form.roleelement'};
152: if ($roledom) {
153: $roleelement = '<input type="hidden" name="roleelement" value="'.$roledom.'" />';
154: $submitopener = &Apache::lonroles::processpick();
155: $autosubmit = 'process_pick("'.$roledom.'")';
156: }
157: $r->print(<<ENDSCRIPT);
158: <script>
159: function gochoose(cname,cdom,cdesc,multiple,caller) {
160: var openerForm = "$env{'form.form'}";
161: courseCount = 0;
162: var courses = '';
163: if (multiple) {
164: if (typeof(document.courselist.course_id.length) == 'undefined') {
165: // only 1 course checkbox was created
166: if (document.courselist.course_id.checked) {
167: courses = courses + document.courselist.course_id.value + "&&";
168: courseCount ++;
169: }
170: } else {
171: for (var j=0; j<document.courselist.course_id.length; j++) {
172: if (document.courselist.course_id[j].checked) {
173: courses = courses + document.courselist.course_id[j].value + "&&";
174: courseCount ++;
175: }
176: }
177: }
178: opener.document.$env{'form.form'}.coursetotal.value = courseCount;
179: if (typeof(opener.document.$env{'form.form'}.coursepick.length) ==
180: 'undefined') {
181: if (opener.document.$env{'form.form'}.coursepick.value == 'specific') {
182: opener.document.$env{'form.form'}.coursepick.checked = true;
183: } else {
184: opener.document.$env{'form.form'}.coursepick.checked = false;
185: }
186: } else {
187: for (var j=0; j<opener.document.$env{'form.form'}.coursepick.length; j++) {
188: if (opener.document.$env{'form.form'}.coursepick[j].value == 'specific') {
189: opener.document.$env{'form.form'}.coursepick[j].checked = true;
190: } else {
191: opener.document.$env{'form.form'}.coursepick[j].checked = false;
192: }
193: }
194: }
195: if (courseCount > 0) {
196: courses = courses.substr(0,courses.length-2);
197: opener.document.$env{'form.form'}.courselist.value = courses;
198: }
199: } else {
200: $name_code
201: opener.document.$env{'form.form'}.$env{'form.cnumelement'}.value=cname;
202: var slct=opener.document.$env{'form.form'}.$env{'form.cdomelement'};
203: if (slct.options == undefined) {
204: opener.document.$env{'form.form'}.$env{'form.cdomelement'}.value=cdom;
205: }
206: else {
207: var i;
208: for (i=0;i<slct.length;i++) {
209: if (slct.options[i].value==cdom) { slct.selectedIndex=i; }
210: }
211: }
212: }
213: $autosubmit
214: $lastaction
215: }
216:
217: function setSections() {
218: var numSections = $num_sections
219: var sectionsArray = new Array("$seclist")
220: opener.document.$env{"form.form"}.currsec.length = 0
221: if (numSections == 0) {
222: opener.document.$env{"form.form"}.currsec.multiple=false
223: opener.document.$env{"form.form"}.currsec.size=1;
224: opener.document.$env{"form.form"}.currsec.options[0] = new Option('No existing sections','',false,false)
225: } else {
226: if (numSections == 1) {
227: opener.document.$env{"form.form"}.currsec.multiple=false;
228: opener.document.$env{"form.form"}.currsec.size=1;
229: opener.document.$env{"form.form"}.currsec.options[0] = new Option('Select','',true,true);
230: opener.document.$env{"form.form"}.currsec.options[1] = new Option('No section','',false,false)
231: opener.document.$env{"form.form"}.currsec.options[2] = new Option(sectionsArray[0],sectionsArray[0],false,false);
232: } else {
233: for (var i=0; i<numSections; i++) {
234: opener.document.$env{"form.form"}.currsec.options[i] = new Option(sectionsArray[i],sectionsArray[i],false,false)
235: }
236: opener.document.$env{"form.form"}.currsec.multiple=true
237: if (numSections < 3) {
238: opener.document.$env{"form.form"}.currsec.size=numSections;
239: } else {
240: opener.document.$env{"form.form"}.currsec.size=3;
241: }
242: opener.document.$env{"form.form"}.currsec.options[0].selected = false
243: }
244: }
245: opener.document.$env{"form.form"}.groups.value='$groupslist';
246: self.close()
247: }
248:
249: $jscript
250: </script>
251: $submitopener
252: <form method="post" name="filterpicker">
253: <input type="hidden" name="cnumelement" value="$env{'form.cnumelement'}" />
254: <input type="hidden" name="cdomelement" value="$env{'form.cdomelement'}" />
255: $name_input
256: <input type="hidden" name="form" value="$env{'form.form'}" />
257: $roleelement
258: $multelement
259: $lt{'cac'}: $sincefilterform
260: <br />
261: $lt{'cdo'}: $domainselectform
262: <br />
263: $lt{'cin'}:
264: <input type="text" name="instcodefilter" size="10" value="$listinstcode" />
265: <br />
266: $lt{'cow'}:
267: <input type="text" name="ownerfilter" size="10" value="$listowner" />
268: <br />
269: $courseidtag
270: $lt{'cde'}:
271: <input type="text" name="descriptfilter" size="40" value="$listdescript" />
272: <p><input type="submit" name="gosearch" value="Search" /></p>
273: </form>
274: <hr />
275: ENDSCRIPT
276: # ---------------------------------------------------------------- Get the data
277: if ($env{'form.gosearch'}) {
278: $r->print(&mt('Searching').' ...<br /> <br />');
279: $r->rflush();
280: unless ($descriptfilter) { $descriptfilter='.'; }
281: unless ($instcodefilter) { $instcodefilter='.'; }
282: unless ($ownerfilter) { $ownerfilter='.'; }
283: unless ($coursefilter) { $coursefilter='.'; }
284: my $timefilter=($sincefilter==-1?1:time-$sincefilter);
285: my %courses=
286: &Apache::lonnet::courseiddump
287: ($domainfilter,$descriptfilter,$timefilter,$instcodefilter,$ownerfilter,$coursefilter);
288: $r->print('<form name="courselist">');
289: my %by_descrip;
290: my $numcourses = keys(%courses);
291: foreach my $course (keys(%courses)) {
292: my $descr;
293: if ($courses{$course} =~ m/^([^:]*):/i) {
294: $descr = &Apache::lonnet::unescape($1);
295: } else {
296: $descr = &Apache::lonnet::unescape($courses{$course});
297: }
298: my $description = $descr;
299: push (@{$by_descrip{$description}}, $course);
300: }
301: if ($numcourses > 1 && $multiple) {
302: $r->print('<input type="button" value="check all"
303: onclick="javascript:checkAll(document.courselist.course_id)" /> <input type="button" value="uncheck all"
304: onclick="javascript:uncheckAll(document.courselist.course_id)" />
305: <br /><br />');
306: }
307: foreach my $description (sort
308: { lc($a) cmp lc($b) } (keys(%by_descrip))) {
309: foreach my $course (@{$by_descrip{$description}}) {
310: my $cleandesc=&HTML::Entities::encode($description,'<>&"');
311: $cleandesc=~s/'/\\'/g;
312: my ($cdom,$cnum)=split(/\_/,$course);
313: my ($descr,$instcode,$owner) = split/:/,$courses{$course};
314: $r->print(&course_chooser($multiple,$cdom,$cnum,$cleandesc));
315: $r->print($description.'('.
316: ($Apache::lonnet::domaindescription{$cdom}?
317: $Apache::lonnet::domaindescription{$cdom}:$cdom).")");
318: unless ($instcode eq '') {
319: $r->print(" - ".&Apache::lonnet::unescape($instcode));
320: }
321: unless ($owner eq '') {
322: $r->print(", owner - ".&Apache::lonnet::unescape($owner));
323: }
324: if ($multiple) { $r->print("</label>\n"); }
325: $r->print("<br />\n");
326: }
327: }
328: if (!%courses) {
329: $r->print(&mt('None found'));
330: } elsif ($multiple) {
331: $r->print('<input type="button" value="Submit" onClick="gochoose('."'','','',1)".'" />');
332: }
333: $r->print('<input type="hidden" name="form" value="'.$env{'form.form'}.'" />'."\n".
334: '<input type="hidden" name="pickedcourse" value="" />'."\n".
335: '<input type="hidden" name="cnumelement" value="'.$env{'form.cnumelement'}.'" />'."\n".
336: '<input type="hidden" name="cdomelement" value="'.$env{'form.cdomelement'}.'" />'."\n");
337: if ((exists($env{'form.roleelement'})) && ($env{'form.form'} eq 'rolechoice')) {
338: $r->print('<input type="hidden" name="roleelement" value="'.$env{'form.roleelement'}.'" />'."\n");
339: }
340: $r->print("</form>\n");
341: }
342: $r->print(&Apache::loncommon::end_page());
343: return OK;
344: }
345:
346: sub course_chooser {
347: my ($multiple,$cdom,$cnum,$cleandesc) = @_;
348: my $output;
349: if ($multiple) {
350: $output = '<label><input type="checkbox" name="course_id" value="'.$cdom.'_'.$cnum.'" />'."\n";
351: } else {
352: $output = '<input type="button" value="Select" onClick="gochoose('.
353: "'".$cnum."','".$cdom."','".$cleandesc."')".'" />'."\n";
354: }
355: return $output;
356: }
357:
358: 1;
359: __END__
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