1: # The LearningOnline Network
2: # Pick a course
3: #
4: # $Id: lonpickcourse.pm,v 1.30 2005/10/03 23:53:25 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: 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']);
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: # if called from rolefilter, setup for multiple course selections.
119: my $multflag = 0;
120: my $jscript;
121: my $title = 'Selecting a course';
122: if ($env{'form.form'} eq 'rolefilter') {
123: $multflag = 1;
124: $title = 'Selecting course(s)';
125: }
126: if ($multflag) {
127: $jscript = &Apache::loncommon::check_uncheck_jscript();
128: }
129: $r->print(&Apache::loncommon::bodytag($title,undef,$loaditem,undef,undef,undef,undef,1));
130: my %lt=&Apache::lonlocal::texthash(
131: 'cac' => 'Course Activity',
132: 'cde' => 'Course Description',
133: 'cdo' => 'Course Domain',
134: 'cin' => 'Course Institutional Code',
135: 'cow' => "Course Owner's usename");
136: my ($name_code,$name_input);
137: if (defined($env{'form.cnameelement'}) && $env{'form.cnameelement'} ne '') {
138: $name_code = "opener.document.$env{'form.form'}.$env{'form.cnameelement'}.value=cdesc;";
139: $name_input ='<input type="hidden" name="cnameelement" value="'.
140: $env{'form.cnameelement'}.'" />';
141: }
142: my $submitopener = '';
143: my $autosubmit = '';
144: my $roleelement = '';
145: my $lastaction = 'self.close()';
146: if ($env{'form.form'} eq 'cu') {
147: $lastaction = 'document.courselist.pickedcourse.value = cdom+"_"+cname;'."\n".
148: 'document.courselist.submit();';
149: }
150: my $roledom = $env{'form.roleelement'};
151: if ($roledom) {
152: $roleelement = '<input type="hidden" name="roleelement" value="'.$roledom.'" />';
153: $submitopener = &Apache::lonroles::processpick($roledom);
154: $autosubmit = 'process_pick("'.$roledom.'")';
155: }
156: $r->print(<<ENDSCRIPT);
157: <script>
158: function gochoose(cname,cdom,cdesc,multflag,caller) {
159: var openerForm = "$env{'form.form'}";
160: courseCount = 0;
161: var courses = '';
162: if (multflag) {
163: for (var j=0; j<document.courselist.course_id.length; j++) {
164: if (document.courselist.course_id[j].checked) {
165: courses = courses + document.courselist.course_id[j].value + "&&";
166: courseCount ++;
167: }
168: }
169: opener.document.$env{'form.form'}.coursetotal.value = courseCount;
170: for (var j=0; j<opener.document.$env{'form.form'}.coursepick.length; j++) {
171: if (opener.document.$env{'form.form'}.coursepick[j].value == 'specific') {
172: opener.document.$env{'form.form'}.coursepick[j].checked = true;
173: }
174: else {
175: opener.document.$env{'form.form'}.coursepick[j].checked = false;
176: }
177: }
178: if (courseCount > 0) {
179: courses = courses.substr(0,courses.length-2);
180: opener.document.$env{'form.form'}.courselist.value = courses
181: }
182: }
183: else {
184: $name_code
185: opener.document.$env{'form.form'}.$env{'form.cnumelement'}.value=cname;
186: if (openerForm == 'cu') {
187: opener.document.$env{'form.form'}.$env{'form.cdomelement'}.value=cdom;
188: }
189: else {
190: var slct=opener.document.$env{'form.form'}.$env{'form.cdomelement'};
191: var i;
192: for (i=0;i<slct.length;i++) {
193: if (slct.options[i].value==cdom) { slct.selectedIndex=i; }
194: }
195: }
196: }
197: $autosubmit
198: $lastaction
199: }
200:
201: function setSections() {
202: var numSections = $num_sections
203: var sectionsArray = new Array("$seclist")
204: opener.document.$env{"form.form"}.currsec.length = 0
205: if (numSections == 0) {
206: opener.document.$env{"form.form"}.currsec.multiple=false
207: opener.document.$env{"form.form"}.currsec.size=1;
208: opener.document.$env{"form.form"}.currsec.options[0] = new Option('No existing sections','',false,false)
209: }
210: else {
211: if (numSections == 1) {
212: opener.document.$env{"form.form"}.currsec.multiple=false;
213: opener.document.$env{"form.form"}.currsec.size=1;
214: opener.document.$env{"form.form"}.currsec.options[0] = new Option('Select','',true,true);
215: opener.document.$env{"form.form"}.currsec.options[1] = new Option('No section','',false,false)
216: opener.document.$env{"form.form"}.currsec.options[2] = new Option(sectionsArray[0],sectionsArray[0],false,false);
217: }
218: else {
219: for (var i=0; i<numSections; i++) {
220: opener.document.$env{"form.form"}.currsec.options[i] = new Option(sectionsArray[i],sectionsArray[i],false,false)
221: }
222: opener.document.$env{"form.form"}.currsec.multiple=true
223: if (numSections < 3) {
224: opener.document.$env{"form.form"}.currsec.size=numSections;
225: }
226: else {
227: opener.document.$env{"form.form"}.currsec.size=3;
228: }
229: opener.document.$env{"form.form"}.currsec.options[0].selected = false
230: }
231: }
232: self.close()
233: }
234:
235: $jscript
236: </script>
237: $submitopener
238: <form method="post" name="filterpicker">
239: <input type="hidden" name="cnumelement" value="$env{'form.cnumelement'}" />
240: <input type="hidden" name="cdomelement" value="$env{'form.cdomelement'}" />
241: $name_input
242: <input type="hidden" name="form" value="$env{'form.form'}" />
243: $roleelement
244: $lt{'cac'}: $sincefilterform
245: <br />
246: $lt{'cdo'}: $domainselectform
247: <br />
248: $lt{'cin'}:
249: <input type="text" name="instcodefilter" size="10" value="$listinstcode" />
250: <br />
251: $lt{'cow'}:
252: <input type="text" name="ownerfilter" size="10" value="$listowner" />
253: <br />
254: $courseidtag
255: $lt{'cde'}:
256: <input type="text" name="descriptfilter" size="40" value="$listdescript" />
257: <p><input type="submit" name="gosearch" value="Search" /></p>
258: </form>
259: <hr />
260: ENDSCRIPT
261: # ---------------------------------------------------------------- Get the data
262: if ($env{'form.gosearch'}) {
263: $r->print(&mt('Searching').' ...<br /> <br />');
264: $r->rflush();
265: unless ($descriptfilter) { $descriptfilter='.'; }
266: unless ($instcodefilter) { $instcodefilter='.'; }
267: unless ($ownerfilter) { $ownerfilter='.'; }
268: unless ($coursefilter) { $coursefilter='.'; }
269: my $timefilter=($sincefilter==-1?1:time-$sincefilter);
270: my %courses=
271: &Apache::lonnet::courseiddump
272: ($domainfilter,$descriptfilter,$timefilter,$instcodefilter,$ownerfilter,$coursefilter);
273: $r->print('<form name="courselist">');
274: my %by_descrip;
275: my $numcourses = keys %courses;
276: foreach my $course (keys %courses) {
277: my $descr;
278: if ($courses{$course} =~ m/^([^:]*):/) {
279: $descr = &Apache::lonnet::unescape($1);
280: } else {
281: $descr = &Apache::lonnet::unescape($courses{$course});
282: }
283: my $description = lc($descr);
284: push (@{$by_descrip{$description}}, $course);
285: }
286: if ($numcourses > 1 && $multflag) {
287: $r->print('<input type="button" value="check all"
288: onclick="javascript:checkAll(document.courselist.course_id)" /> <input type="button" value="uncheck all"
289: onclick="javascript:uncheckAll(document.courselist.course_id)" />
290: <br /><br />');
291: }
292: foreach my $description (sort(keys(%by_descrip))) {
293: foreach my $course (@{$by_descrip{$description}}) {
294: my $cleandesc=&HTML::Entities::encode($description,'<>&"');
295: $cleandesc=~s/'/\\'/g;
296: my ($cdom,$cnum)=split(/\_/,$course);
297: my ($descr,$instcode,$owner) = split/:/,$courses{$course};
298: $r->print(&course_chooser($multflag,$cdom,$cnum,$cleandesc));
299: $r->print($description.'('.
300: ($Apache::lonnet::domaindescription{$cdom}?
301: $Apache::lonnet::domaindescription{$cdom}:$cdom).")");
302: unless ($instcode eq '') {
303: $r->print(" - ".&Apache::lonnet::unescape($instcode));
304: }
305: unless ($owner eq '') {
306: $r->print(", owner - ".&Apache::lonnet::unescape($owner));
307: }
308: $r->print("<br />\n");
309: }
310: }
311: if (!%courses) {
312: $r->print(&mt('None found'));
313: } elsif ($multflag) {
314: $r->print('<input type="button" value="Submit" onClick="gochoose('."'','','',1)".'" />');
315: }
316: $r->print('<input type="hidden" name="form" value="'.$env{'form.form'}.'" />'."\n".
317: '<input type="hidden" name="pickedcourse" value="" />'."\n".
318: '<input type="hidden" name="cnumelement" value="'.$env{'form.cnumelement'}.'" />'."\n".
319: '<input type="hidden" name="cdomelement" value="'.$env{'form.cdomelement'}.'" />'."\n".
320: '</form>');
321: }
322: $r->print('</body></html>');
323: return OK;
324: }
325:
326: sub course_chooser {
327: my ($multflag,$cdom,$cnum,$cleandesc) = @_;
328: my $output;
329: if ($multflag) {
330: $output = '<input type="checkbox" name="course_id" value="'.$cdom.'_'.$cnum.'" />'."\n";
331: } else {
332: $output = '<input type="button" value="Select" onClick="gochoose('.
333: "'".$cnum."','".$cdom."','".$cleandesc."')".'" />'."\n";
334: }
335: return $output;
336: }
337:
338: 1;
339: __END__
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