1: # The LearningOnline Network
2: # Pick a course
3: #
4: # $Id: lonpickcourse.pm,v 1.45 2006/05/09 15:09:27 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::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:
105: my %sections_count = &Apache::loncommon::get_sections($cdom,$cnum);
106: my @sections = (sort {$a <=> $b} keys(%sections_count));
107: $seclist = join('","',@sections);
108:
109: my %curr_groups = &Apache::loncommon::coursegroups($cdom,$cnum);
110: $groupslist = join(',',sort(keys(%curr_groups)));
111: }
112: my $jscript;
113: my $title = 'Selecting a course';
114: # Setup for multiple course selections, if flag for multiples set.
115: my $multiple = $env{'form.multiple'};
116: my $multelement;
117: if ($multiple) {
118: $title = 'Selecting course(s)';
119: $jscript = &Apache::loncommon::check_uncheck_jscript();
120: $multelement = '<input type="hidden" name="multiple" value="'.$multiple.'" />';
121: }
122: $r->print(&Apache::loncommon::start_page($title,undef,
123: {'add_entries' => \%loaditem,
124: 'no_nav_bar' => 1, }));
125: my %lt=&Apache::lonlocal::texthash(
126: 'cac' => 'Course Activity',
127: 'cde' => 'Course Description',
128: 'cdo' => 'Course Domain',
129: 'cin' => 'Course Institutional Code',
130: 'cow' => "Course Owner's Username");
131: my ($name_code,$name_input);
132: if (defined($env{'form.cnameelement'}) && $env{'form.cnameelement'} ne '') {
133: $name_code = "opener.document.$env{'form.form'}.$env{'form.cnameelement'}.value=cdesc;";
134: $name_input ='<input type="hidden" name="cnameelement" value="'.
135: $env{'form.cnameelement'}.'" />';
136: }
137: my $submitopener = '';
138: my $autosubmit = '';
139: my $roleelement = '';
140: my $lastaction = 'self.close()';
141: if ($env{'form.form'} eq 'cu') {
142: $lastaction = 'document.courselist.pickedcourse.value = cdom+"_"+cname;'."\n".
143: 'document.courselist.submit();';
144: }
145: my $roledom = $env{'form.roleelement'};
146: if ($roledom) {
147: $roleelement = '<input type="hidden" name="roleelement" value="'.$roledom.'" />';
148: $submitopener = &Apache::lonroles::processpick();
149: $autosubmit = 'process_pick("'.$roledom.'")';
150: }
151: $r->print(<<ENDSCRIPT);
152: <script>
153: function gochoose(cname,cdom,cdesc,multiple,caller) {
154: var openerForm = "$env{'form.form'}";
155: courseCount = 0;
156: var courses = '';
157: if (multiple) {
158: if (typeof(document.courselist.course_id.length) == 'undefined') {
159: // only 1 course checkbox was created
160: if (document.courselist.course_id.checked) {
161: courses = courses + document.courselist.course_id.value + "&&";
162: courseCount ++;
163: }
164: } else {
165: for (var j=0; j<document.courselist.course_id.length; j++) {
166: if (document.courselist.course_id[j].checked) {
167: courses = courses + document.courselist.course_id[j].value + "&&";
168: courseCount ++;
169: }
170: }
171: }
172: opener.document.$env{'form.form'}.coursetotal.value = courseCount;
173: if (typeof(opener.document.$env{'form.form'}.coursepick.length) ==
174: 'undefined') {
175: if (opener.document.$env{'form.form'}.coursepick.value == 'specific') {
176: opener.document.$env{'form.form'}.coursepick.checked = true;
177: } else {
178: opener.document.$env{'form.form'}.coursepick.checked = false;
179: }
180: } else {
181: for (var j=0; j<opener.document.$env{'form.form'}.coursepick.length; j++) {
182: if (opener.document.$env{'form.form'}.coursepick[j].value == 'specific') {
183: opener.document.$env{'form.form'}.coursepick[j].checked = true;
184: } else {
185: opener.document.$env{'form.form'}.coursepick[j].checked = false;
186: }
187: }
188: }
189: if (courseCount > 0) {
190: courses = courses.substr(0,courses.length-2);
191: opener.document.$env{'form.form'}.courselist.value = courses;
192: }
193: } else {
194: $name_code
195: opener.document.$env{'form.form'}.$env{'form.cnumelement'}.value=cname;
196: var slct=opener.document.$env{'form.form'}.$env{'form.cdomelement'};
197: if (slct.options == undefined) {
198: opener.document.$env{'form.form'}.$env{'form.cdomelement'}.value=cdom;
199: }
200: else {
201: var i;
202: for (i=0;i<slct.length;i++) {
203: if (slct.options[i].value==cdom) { slct.selectedIndex=i; }
204: }
205: }
206: }
207: $autosubmit
208: $lastaction
209: }
210:
211: function setSections() {
212: var numSections = $num_sections
213: var sectionsArray = new Array("$seclist")
214: opener.document.$env{"form.form"}.currsec.length = 0
215: if (numSections == 0) {
216: opener.document.$env{"form.form"}.currsec.multiple=false
217: opener.document.$env{"form.form"}.currsec.size=1;
218: opener.document.$env{"form.form"}.currsec.options[0] = new Option('No existing sections','',false,false)
219: } else {
220: if (numSections == 1) {
221: opener.document.$env{"form.form"}.currsec.multiple=false;
222: opener.document.$env{"form.form"}.currsec.size=1;
223: opener.document.$env{"form.form"}.currsec.options[0] = new Option('Select','',true,true);
224: opener.document.$env{"form.form"}.currsec.options[1] = new Option('No section','',false,false)
225: opener.document.$env{"form.form"}.currsec.options[2] = new Option(sectionsArray[0],sectionsArray[0],false,false);
226: } else {
227: for (var i=0; i<numSections; i++) {
228: opener.document.$env{"form.form"}.currsec.options[i] = new Option(sectionsArray[i],sectionsArray[i],false,false)
229: }
230: opener.document.$env{"form.form"}.currsec.multiple=true
231: if (numSections < 3) {
232: opener.document.$env{"form.form"}.currsec.size=numSections;
233: } else {
234: opener.document.$env{"form.form"}.currsec.size=3;
235: }
236: opener.document.$env{"form.form"}.currsec.options[0].selected = false
237: }
238: }
239: opener.document.$env{"form.form"}.groups.value='$groupslist';
240: self.close()
241: }
242:
243: $jscript
244: </script>
245: $submitopener
246: <form method="post" name="filterpicker">
247: <input type="hidden" name="cnumelement" value="$env{'form.cnumelement'}" />
248: <input type="hidden" name="cdomelement" value="$env{'form.cdomelement'}" />
249: $name_input
250: <input type="hidden" name="form" value="$env{'form.form'}" />
251: $roleelement
252: $multelement
253: $lt{'cac'}: $sincefilterform
254: <br />
255: $lt{'cdo'}: $domainselectform
256: <br />
257: $lt{'cin'}:
258: <input type="text" name="instcodefilter" size="10" value="$listinstcode" />
259: <br />
260: $lt{'cow'}:
261: <input type="text" name="ownerfilter" size="10" value="$listowner" />
262: <br />
263: $courseidtag
264: $lt{'cde'}:
265: <input type="text" name="descriptfilter" size="40" value="$listdescript" />
266: <p><input type="submit" name="gosearch" value="Search" /></p>
267: </form>
268: <hr />
269: ENDSCRIPT
270: # ---------------------------------------------------------------- Get the data
271: if ($env{'form.gosearch'}) {
272: $r->print(&mt('Searching').' ...<br /> <br />');
273: $r->rflush();
274: unless ($descriptfilter) { $descriptfilter='.'; }
275: unless ($instcodefilter) { $instcodefilter='.'; }
276: unless ($ownerfilter) { $ownerfilter='.'; }
277: unless ($coursefilter) { $coursefilter='.'; }
278: my $timefilter=($sincefilter==-1?1:time-$sincefilter);
279: my %courses=
280: &Apache::lonnet::courseiddump
281: ($domainfilter,$descriptfilter,$timefilter,$instcodefilter,$ownerfilter,$coursefilter);
282: $r->print('<form name="courselist">');
283: my %by_descrip;
284: my $numcourses = keys(%courses);
285: foreach my $course (keys(%courses)) {
286: my $descr;
287: if ($courses{$course} =~ m/^([^:]*):/i) {
288: $descr = &Apache::lonnet::unescape($1);
289: } else {
290: $descr = &Apache::lonnet::unescape($courses{$course});
291: }
292: my $description = $descr;
293: push (@{$by_descrip{$description}}, $course);
294: }
295: if ($numcourses > 1 && $multiple) {
296: $r->print('<input type="button" value="check all"
297: onclick="javascript:checkAll(document.courselist.course_id)" /> <input type="button" value="uncheck all"
298: onclick="javascript:uncheckAll(document.courselist.course_id)" />
299: <br /><br />');
300: }
301: foreach my $description (sort
302: { lc($a) cmp lc($b) } (keys(%by_descrip))) {
303: foreach my $course (@{$by_descrip{$description}}) {
304: my $cleandesc=&HTML::Entities::encode($description,'<>&"');
305: $cleandesc=~s/'/\\'/g;
306: my ($cdom,$cnum)=split(/\_/,$course);
307: my ($descr,$instcode,$owner) = split/:/,$courses{$course};
308: $r->print(&course_chooser($multiple,$cdom,$cnum,$cleandesc));
309: $r->print($description.'('.
310: ($Apache::lonnet::domaindescription{$cdom}?
311: $Apache::lonnet::domaindescription{$cdom}:$cdom).")");
312: unless ($instcode eq '') {
313: $r->print(" - ".&Apache::lonnet::unescape($instcode));
314: }
315: unless ($owner eq '') {
316: $r->print(", owner - ".&Apache::lonnet::unescape($owner));
317: }
318: if ($multiple) { $r->print("</label>\n"); }
319: $r->print("<br />\n");
320: }
321: }
322: if (!%courses) {
323: $r->print(&mt('None found'));
324: } elsif ($multiple) {
325: $r->print('<input type="button" value="Submit" onClick="gochoose('."'','','',1)".'" />');
326: }
327: $r->print('<input type="hidden" name="form" value="'.$env{'form.form'}.'" />'."\n".
328: '<input type="hidden" name="pickedcourse" value="" />'."\n".
329: '<input type="hidden" name="cnumelement" value="'.$env{'form.cnumelement'}.'" />'."\n".
330: '<input type="hidden" name="cdomelement" value="'.$env{'form.cdomelement'}.'" />'."\n");
331: if ((exists($env{'form.roleelement'})) && ($env{'form.form'} eq 'rolechoice')) {
332: $r->print('<input type="hidden" name="roleelement" value="'.$env{'form.roleelement'}.'" />'."\n");
333: }
334: $r->print("</form>\n");
335: }
336: $r->print(&Apache::loncommon::end_page());
337: return OK;
338: }
339:
340: sub course_chooser {
341: my ($multiple,$cdom,$cnum,$cleandesc) = @_;
342: my $output;
343: if ($multiple) {
344: $output = '<label><input type="checkbox" name="course_id" value="'.$cdom.'_'.$cnum.'" />'."\n";
345: } else {
346: $output = '<input type="button" value="Select" onClick="gochoose('.
347: "'".$cnum."','".$cdom."','".$cleandesc."')".'" />'."\n";
348: }
349: return $output;
350: }
351:
352: 1;
353: __END__
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