1: # The LearningOnline Network
2: # Pick a course
3: #
4: # $Id: lonpickcourse.pm,v 1.37 2006/01/10 21:36:45 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: my $html=&Apache::lonxml::xmlbegin();
46: $r->print(<<ENDDOCUMENT);
47: $html
48: <head>
49: <title>The LearningOnline Network with CAPA</title>
50: </head>
51: ENDDOCUMENT
52: # Get parameters from query string
53: &Apache::loncommon::get_unprocessed_cgi
54: ($ENV{'QUERY_STRING'},['domainfilter','descriptfilter',
55: 'sincefilter','form','cnumelement',
56: 'cdomelement','cnameelement','roleelement',
57: 'pickedcourse','instcodefilter',
58: 'ownerfilter','coursefilter','multiple']);
59: # domain filter and selection
60: my $domainfilter=$env{'form.domainfilter'};
61: $domainfilter=~s/\W//g;
62: unless ($domainfilter) { $domainfilter=''; }
63: my $domainselectform=&Apache::loncommon::select_dom_form($domainfilter,
64: 'domainfilter',1);
65: # description filter
66: my $descriptfilter=$env{'form.descriptfilter'};
67: unless ($descriptfilter) { $descriptfilter=''; }
68: my $listdescript=&HTML::Entities::encode($descriptfilter,'<>&"');
69: # institutional code filter
70: my $instcodefilter=$env{'form.instcodefilter'};
71: unless ($instcodefilter) { $instcodefilter=''; }
72: my $listinstcode=&HTML::Entities::encode($instcodefilter,'<>&"');
73: # course owner filter
74: my $ownerfilter=$env{'form.ownerfilter'};
75: unless ($ownerfilter) { $ownerfilter=''; }
76: my $listowner=&HTML::Entities::encode($ownerfilter,'<>&"');
77: # course ID filter for DCs only
78: my ($courseidtag,$coursefilter);
79: if ($env{'user.adv'} && $domainfilter && exists($env{'user.role.dc./'.
80: $domainfilter.'/'})) {
81: $coursefilter=$env{'form.coursefilter'};
82: unless ($coursefilter) { $coursefilter=''; }
83: my $listcourseid=&HTML::Entities::encode($coursefilter,'<>&"');
84: $courseidtag = &mt('LON-CAPA course ID');
85: $courseidtag .= qq|: <input type="text" name="coursefilter" size="25" value="$listcourseid" />
86: <br />
87: |;
88: }
89: # last course activity filter and selection
90: my $sincefilter=$env{'form.sincefilter'};
91: $sincefilter=~s/[^\d-]//g;
92: unless ($sincefilter) { $sincefilter=-1; }
93: my $sincefilterform=&Apache::loncommon::select_form($sincefilter,
94: 'sincefilter',('-1'=>'',
95: '86400' => 'today',
96: '604800' => 'last week',
97: '2592000' => 'last month',
98: '7776000' => 'last three months',
99: '15552000' => 'last six months',
100: '31104000' => 'last year',
101: 'select_form_order' =>
102: ['-1','86400','604800','2592000','7776000',
103: '15552000','31104000']));
104: # if called from loncreateuser, report sections, then close
105: my ($loaditem,$seclist);
106: my $num_sections = 0;
107: if ($env{'form.form'} eq 'cu' && $env{'form.pickedcourse'}) {
108: $loaditem = 'onLoad="setSections()"';
109: my ($cdom,$cnum) = split/_/,$env{'form.pickedcourse'};
110: my %sections_count = ();
111: $num_sections = &Apache::loncommon::get_sections($cdom,$cnum,\%sections_count);
112: my @sections = ();
113: if ($num_sections > 0) {
114: @sections = (sort {$a <=> $b} keys(%sections_count));
115: $seclist = join('","',@sections);
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: $r->print(&Apache::loncommon::bodytag($title,undef,$loaditem,undef,undef,undef,undef,1));
129: my %lt=&Apache::lonlocal::texthash(
130: 'cac' => 'Course Activity',
131: 'cde' => 'Course Description',
132: 'cdo' => 'Course Domain',
133: 'cin' => 'Course Institutional Code',
134: 'cow' => "Course Owner's usename");
135: my ($name_code,$name_input);
136: if (defined($env{'form.cnameelement'}) && $env{'form.cnameelement'} ne '') {
137: $name_code = "opener.document.$env{'form.form'}.$env{'form.cnameelement'}.value=cdesc;";
138: $name_input ='<input type="hidden" name="cnameelement" value="'.
139: $env{'form.cnameelement'}.'" />';
140: }
141: my $submitopener = '';
142: my $autosubmit = '';
143: my $roleelement = '';
144: my $lastaction = 'self.close()';
145: if ($env{'form.form'} eq 'cu') {
146: $lastaction = 'document.courselist.pickedcourse.value = cdom+"_"+cname;'."\n".
147: 'document.courselist.submit();';
148: }
149: my $roledom = $env{'form.roleelement'};
150: if ($roledom) {
151: $roleelement = '<input type="hidden" name="roleelement" value="'.$roledom.'" />';
152: $submitopener = &Apache::lonroles::processpick();
153: $autosubmit = 'process_pick("'.$roledom.'")';
154: }
155: $r->print(<<ENDSCRIPT);
156: <script>
157: function gochoose(cname,cdom,cdesc,multiple,caller) {
158: var openerForm = "$env{'form.form'}";
159: courseCount = 0;
160: var courses = '';
161: if (multiple) {
162: if (typeof(document.courselist.course_id.length) == 'undefined') {
163: // only 1 course checkbox was created
164: if (document.courselist.course_id.checked) {
165: courses = courses + document.courselist.course_id.value + "&&";
166: courseCount ++;
167: }
168: } else {
169: for (var j=0; j<document.courselist.course_id.length; j++) {
170: if (document.courselist.course_id[j].checked) {
171: courses = courses + document.courselist.course_id[j].value + "&&";
172: courseCount ++;
173: }
174: }
175: }
176: opener.document.$env{'form.form'}.coursetotal.value = courseCount;
177: if (typeof(opener.document.$env{'form.form'}.coursepick.length) ==
178: 'undefined') {
179: if (opener.document.$env{'form.form'}.coursepick.value == 'specific') {
180: opener.document.$env{'form.form'}.coursepick.checked = true;
181: } else {
182: opener.document.$env{'form.form'}.coursepick.checked = false;
183: }
184: } else {
185: for (var j=0; j<opener.document.$env{'form.form'}.coursepick.length; j++) {
186: if (opener.document.$env{'form.form'}.coursepick[j].value == 'specific') {
187: opener.document.$env{'form.form'}.coursepick[j].checked = true;
188: } else {
189: opener.document.$env{'form.form'}.coursepick[j].checked = false;
190: }
191: }
192: }
193: if (courseCount > 0) {
194: courses = courses.substr(0,courses.length-2);
195: opener.document.$env{'form.form'}.courselist.value = courses;
196: }
197: } else {
198: $name_code
199: opener.document.$env{'form.form'}.$env{'form.cnumelement'}.value=cname;
200: var slct=opener.document.$env{'form.form'}.$env{'form.cdomelement'};
201: if (slct.options == undefined) {
202: opener.document.$env{'form.form'}.$env{'form.cdomelement'}.value=cdom;
203: }
204: else {
205: var i;
206: for (i=0;i<slct.length;i++) {
207: if (slct.options[i].value==cdom) { slct.selectedIndex=i; }
208: }
209: }
210: }
211: $autosubmit
212: $lastaction
213: }
214:
215: function setSections() {
216: var numSections = $num_sections
217: var sectionsArray = new Array("$seclist")
218: opener.document.$env{"form.form"}.currsec.length = 0
219: if (numSections == 0) {
220: opener.document.$env{"form.form"}.currsec.multiple=false
221: opener.document.$env{"form.form"}.currsec.size=1;
222: opener.document.$env{"form.form"}.currsec.options[0] = new Option('No existing sections','',false,false)
223: } else {
224: if (numSections == 1) {
225: opener.document.$env{"form.form"}.currsec.multiple=false;
226: opener.document.$env{"form.form"}.currsec.size=1;
227: opener.document.$env{"form.form"}.currsec.options[0] = new Option('Select','',true,true);
228: opener.document.$env{"form.form"}.currsec.options[1] = new Option('No section','',false,false)
229: opener.document.$env{"form.form"}.currsec.options[2] = new Option(sectionsArray[0],sectionsArray[0],false,false);
230: } else {
231: for (var i=0; i<numSections; i++) {
232: opener.document.$env{"form.form"}.currsec.options[i] = new Option(sectionsArray[i],sectionsArray[i],false,false)
233: }
234: opener.document.$env{"form.form"}.currsec.multiple=true
235: if (numSections < 3) {
236: opener.document.$env{"form.form"}.currsec.size=numSections;
237: } else {
238: opener.document.$env{"form.form"}.currsec.size=3;
239: }
240: opener.document.$env{"form.form"}.currsec.options[0].selected = false
241: }
242: }
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/^([^:]*):/) {
291: $descr = &Apache::lonnet::unescape($1);
292: } else {
293: $descr = &Apache::lonnet::unescape($courses{$course});
294: }
295: my $description = lc($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(keys(%by_descrip))) {
305: foreach my $course (@{$by_descrip{$description}}) {
306: my $cleandesc=&HTML::Entities::encode($description,'<>&"');
307: $cleandesc=~s/'/\\'/g;
308: my ($cdom,$cnum)=split(/\_/,$course);
309: my ($descr,$instcode,$owner) = split/:/,$courses{$course};
310: $r->print(&course_chooser($multiple,$cdom,$cnum,$cleandesc));
311: $r->print($description.'('.
312: ($Apache::lonnet::domaindescription{$cdom}?
313: $Apache::lonnet::domaindescription{$cdom}:$cdom).")");
314: unless ($instcode eq '') {
315: $r->print(" - ".&Apache::lonnet::unescape($instcode));
316: }
317: unless ($owner eq '') {
318: $r->print(", owner - ".&Apache::lonnet::unescape($owner));
319: }
320: if ($multiple) { $r->print("</label>\n"); }
321: $r->print("<br />\n");
322: }
323: }
324: if (!%courses) {
325: $r->print(&mt('None found'));
326: } elsif ($multiple) {
327: $r->print('<input type="button" value="Submit" onClick="gochoose('."'','','',1)".'" />');
328: }
329: $r->print('<input type="hidden" name="form" value="'.$env{'form.form'}.'" />'."\n".
330: '<input type="hidden" name="pickedcourse" value="" />'."\n".
331: '<input type="hidden" name="cnumelement" value="'.$env{'form.cnumelement'}.'" />'."\n".
332: '<input type="hidden" name="cdomelement" value="'.$env{'form.cdomelement'}.'" />'."\n");
333: if ((exists($env{'form.roleelement'})) && ($env{'form.form'} eq 'rolechoice')) {
334: $r->print('<input type="hidden" name="roleelement" value="'.$env{'form.roleelement'}.'" />'."\n");
335: }
336: $r->print("</form>\n");
337: }
338: $r->print('</body></html>');
339: return OK;
340: }
341:
342: sub course_chooser {
343: my ($multiple,$cdom,$cnum,$cleandesc) = @_;
344: my $output;
345: if ($multiple) {
346: $output = '<label><input type="checkbox" name="course_id" value="'.$cdom.'_'.$cnum.'" />'."\n";
347: } else {
348: $output = '<input type="button" value="Select" onClick="gochoose('.
349: "'".$cnum."','".$cdom."','".$cleandesc."')".'" />'."\n";
350: }
351: return $output;
352: }
353:
354: 1;
355: __END__
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