1: # The LearningOnline Network
2: # Pick a course
3: #
4: # $Id: lonpickcourse.pm,v 1.48 2006/05/30 20:12:15 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: 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: 'type']);
57: # domain filter and selection
58: my $domainfilter=$env{'form.domainfilter'};
59: $domainfilter=~s/\W//g;
60: unless ($domainfilter) { $domainfilter=''; }
61: my $domainselectform=&Apache::loncommon::select_dom_form($domainfilter,
62: 'domainfilter',1);
63: # description filter
64: my $descriptfilter=$env{'form.descriptfilter'};
65: unless ($descriptfilter) { $descriptfilter=''; }
66: my $listdescript=&HTML::Entities::encode($descriptfilter,'<>&"');
67: # institutional code filter
68: my $instcodefilter=$env{'form.instcodefilter'};
69: unless ($instcodefilter) { $instcodefilter=''; }
70: my $listinstcode=&HTML::Entities::encode($instcodefilter,'<>&"');
71: # course owner filter
72: my $ownerfilter=$env{'form.ownerfilter'};
73: unless ($ownerfilter) { $ownerfilter=''; }
74: my $listowner=&HTML::Entities::encode($ownerfilter,'<>&"');
75: # course ID filter for DCs only
76: my ($courseidtag,$coursefilter);
77: if ($env{'user.adv'} && $domainfilter && exists($env{'user.role.dc./'.
78: $domainfilter.'/'})) {
79: $coursefilter=$env{'form.coursefilter'};
80: unless ($coursefilter) { $coursefilter=''; }
81: my $listcourseid=&HTML::Entities::encode($coursefilter,'<>&"');
82: $courseidtag = &mt('LON-CAPA course ID');
83: $courseidtag .= qq|: <input type="text" name="coursefilter" size="25" value="$listcourseid" />
84: <br />
85: |;
86: }
87: # last course activity filter and selection
88: my $sincefilter=$env{'form.sincefilter'};
89: $sincefilter=~s/[^\d-]//g;
90: unless ($sincefilter) { $sincefilter=-1; }
91: my $sincefilterform=&Apache::loncommon::select_form($sincefilter,
92: 'sincefilter',('-1'=>'',
93: '86400' => 'today',
94: '604800' => 'last week',
95: '2592000' => 'last month',
96: '7776000' => 'last three months',
97: '15552000' => 'last six months',
98: '31104000' => 'last year',
99: 'select_form_order' =>
100: ['-1','86400','604800','2592000','7776000',
101: '15552000','31104000']));
102: # if called from loncreateuser, report sections, then close
103: my (%loaditem,$seclist,$groupslist);
104: my $num_sections = 0;
105: if ($env{'form.form'} eq 'cu' && $env{'form.pickedcourse'}) {
106: $loaditem{'onload'} ="setSections()";
107: my ($cdom,$cnum) = split/_/,$env{'form.pickedcourse'};
108:
109: my %sections_count = &Apache::loncommon::get_sections($cdom,$cnum);
110: my @sections = (sort {$a <=> $b} keys(%sections_count));
111: $seclist = join('","',@sections);
112: $num_sections = scalar(@sections);
113: my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum);
114: $groupslist = join(',',sort(keys(%curr_groups)));
115: }
116: my $jscript;
117: my $type = $env{'form.type'};
118: if (!defined($env{'form.type'})) {
119: $type = 'Course';
120: }
121: my $typeselectform = '<select name="type" size="1"';
122: if (!$type) {
123: $typeselectform .= ' selected="selected"';
124: }
125: $typeselectform .= ">\n";
126: foreach my $posstype ('Course','Group') {
127: $typeselectform.='<option value="'.$posstype.'" "'.
128: ($posstype eq $type ? 'selected="selected" ' : ''). ">$posstype</option>\n";
129: }
130: $typeselectform.="</select>";
131: my $title = &mt('Selecting a [_1]',$type);
132: # Setup for multiple course selections, if flag for multiples set.
133: my $multiple = $env{'form.multiple'};
134: my $multelement;
135: if ($multiple) {
136: $title = &mt('Selecting [_1](s)',lc($type));
137: $jscript = &Apache::loncommon::check_uncheck_jscript();
138: $multelement = '<input type="hidden" name="multiple" value="'.$multiple.'" />';
139: }
140: $r->print(&Apache::loncommon::start_page($title,undef,
141: {'add_entries' => \%loaditem,
142: 'no_nav_bar' => 1, }));
143: my %lt = (
144: 'cac' => &mt('[_1] Activity',$type),
145: 'cde' => &mt('[_1] Description',$type),
146: 'cdo' => &mt('[_1] Domain',$type),
147: 'cin' => &mt('Course Institutional Code'),
148: 'cow' => &mt("[_1] Owner's Username",$type),
149: 'cog' => &mt('Course or Group')
150: );
151:
152: my ($name_code,$name_input);
153: if (defined($env{'form.cnameelement'}) && $env{'form.cnameelement'} ne '') {
154: $name_code = "opener.document.$env{'form.form'}.$env{'form.cnameelement'}.value=cdesc;";
155: $name_input ='<input type="hidden" name="cnameelement" value="'.
156: $env{'form.cnameelement'}.'" />';
157: }
158: my $submitopener = '';
159: my $autosubmit = '';
160: my $roleelement = '';
161: my $lastaction = 'self.close()';
162: if ($env{'form.form'} eq 'cu') {
163: $lastaction = 'document.courselist.pickedcourse.value = cdom+"_"+cname;'."\n".
164: 'document.courselist.submit();';
165: }
166: my $roledom = $env{'form.roleelement'};
167: if ($roledom) {
168: $roleelement = '<input type="hidden" name="roleelement" value="'.$roledom.'" />';
169: $submitopener = &Apache::lonroles::processpick();
170: $autosubmit = 'process_pick("'.$roledom.'")';
171: }
172: my $instcodeform;
173: if ($type eq 'Course') {
174: $instcodeform = $lt{'cin'}.':<input type="text" name="instcodefilter"
175: size="10" value="'.$listinstcode.'" /><br />';
176: }
177:
178: my %elements = (
179: Course => {
180: name => 'coursepick',
181: total => 'coursetotal',
182: list => 'courselist',
183: },
184: Group => {
185: name => 'grouppick',
186: total => 'grouptotal',
187: list => 'grouplist',
188: },
189: );
190:
191: $r->print(<<ENDSCRIPT);
192: <script>
193: function gochoose(cname,cdom,cdesc,multiple,caller) {
194: var openerForm = "$env{'form.form'}";
195: courseCount = 0;
196: var courses = '';
197: if (multiple) {
198: if (typeof(document.courselist.course_id.length) == 'undefined') {
199: // only 1 course checkbox was created
200: if (document.courselist.course_id.checked) {
201: courses = courses + document.courselist.course_id.value + "&&";
202: courseCount ++;
203: }
204: } else {
205: for (var j=0; j<document.courselist.course_id.length; j++) {
206: if (document.courselist.course_id[j].checked) {
207: courses = courses + document.courselist.course_id[j].value + "&&";
208: courseCount ++;
209: }
210: }
211: }
212: opener.document.$env{'form.form'}.$elements{$type}{'total'}.value = courseCount;
213: if (typeof(opener.document.$env{'form.form'}.$elements{$type}{'name'}.length) ==
214: 'undefined') {
215: if (opener.document.$env{'form.form'}.$elements{$type}{'name'}.value == 'specific') {
216: opener.document.$env{'form.form'}.$elements{$type}{'name'}.checked = true;
217: } else {
218: opener.document.$env{'form.form'}.$elements{$type}{'name'}.checked = false;
219: }
220: } else {
221: for (var j=0; j<opener.document.$env{'form.form'}.$elements{$type}{'name'}.length; j++) {
222: if (opener.document.$env{'form.form'}.$elements{$type}{'name'}\[j].value == 'specific') {
223: opener.document.$env{'form.form'}.$elements{$type}{'name'}\[j].checked = true;
224: } else {
225: opener.document.$env{'form.form'}.$elements{$type}{'name'}\[j].checked = false;
226: }
227: }
228: }
229: if (courseCount > 0) {
230: courses = courses.substr(0,courses.length-2);
231: opener.document.$env{'form.form'}.$elements{$type}{'list'}.value = courses;
232: }
233: } else {
234: $name_code
235: opener.document.$env{'form.form'}.$env{'form.cnumelement'}.value=cname;
236: var slct=opener.document.$env{'form.form'}.$env{'form.cdomelement'};
237: if (slct.options == undefined) {
238: opener.document.$env{'form.form'}.$env{'form.cdomelement'}.value=cdom;
239: }
240: else {
241: var i;
242: for (i=0;i<slct.length;i++) {
243: if (slct.options[i].value==cdom) { slct.selectedIndex=i; }
244: }
245: }
246: }
247: $autosubmit
248: $lastaction
249: }
250:
251: function setSections() {
252: var numSections = $num_sections
253: var sectionsArray = new Array("$seclist")
254: opener.document.$env{"form.form"}.currsec.length = 0
255: if (numSections == 0) {
256: opener.document.$env{"form.form"}.currsec.multiple=false
257: opener.document.$env{"form.form"}.currsec.size=1;
258: opener.document.$env{"form.form"}.currsec.options[0] = new Option('No existing sections','',false,false)
259: } else {
260: if (numSections == 1) {
261: opener.document.$env{"form.form"}.currsec.multiple=false;
262: opener.document.$env{"form.form"}.currsec.size=1;
263: opener.document.$env{"form.form"}.currsec.options[0] = new Option('Select','',true,true);
264: opener.document.$env{"form.form"}.currsec.options[1] = new Option('No section','',false,false)
265: opener.document.$env{"form.form"}.currsec.options[2] = new Option(sectionsArray[0],sectionsArray[0],false,false);
266: } else {
267: for (var i=0; i<numSections; i++) {
268: opener.document.$env{"form.form"}.currsec.options[i] = new Option(sectionsArray[i],sectionsArray[i],false,false)
269: }
270: opener.document.$env{"form.form"}.currsec.multiple=true
271: if (numSections < 3) {
272: opener.document.$env{"form.form"}.currsec.size=numSections;
273: } else {
274: opener.document.$env{"form.form"}.currsec.size=3;
275: }
276: opener.document.$env{"form.form"}.currsec.options[0].selected = false
277: }
278: }
279: opener.document.$env{"form.form"}.groups.value='$groupslist';
280: self.close()
281: }
282:
283: $jscript
284: </script>
285: $submitopener
286: <form method="post" name="filterpicker" action="/adm/pickcourse">
287: <input type="hidden" name="cnumelement" value="$env{'form.cnumelement'}" />
288: <input type="hidden" name="cdomelement" value="$env{'form.cdomelement'}" />
289: $name_input
290: <input type="hidden" name="form" value="$env{'form.form'}" />
291: $roleelement
292: $multelement
293: $lt{'cac'}: $sincefilterform
294: <br />
295: $lt{'cdo'}: $domainselectform
296: <br />
297: $lt{'cog'}: $typeselectform
298: <br />
299: $instcodeform
300: $lt{'cow'}:
301: <input type="text" name="ownerfilter" size="10" value="$listowner" />
302: <br />
303: $courseidtag
304: $lt{'cde'}:
305: <input type="text" name="descriptfilter" size="40" value="$listdescript" />
306: <p><input type="submit" name="gosearch" value="Search" /></p>
307: </form>
308: <hr />
309: ENDSCRIPT
310: # ---------------------------------------------------------------- Get the data
311: if ($env{'form.gosearch'}) {
312: $r->print(&mt('Searching').' ...<br /> <br />');
313: $r->rflush();
314: unless ($descriptfilter) { $descriptfilter='.'; }
315: unless ($instcodefilter) { $instcodefilter='.'; }
316: unless ($ownerfilter) { $ownerfilter='.'; }
317: unless ($coursefilter) { $coursefilter='.'; }
318: unless ($type) { $type = '.'; }
319: my $timefilter=($sincefilter==-1?1:time-$sincefilter);
320: my %courses=
321: &Apache::lonnet::courseiddump
322: ($domainfilter,$descriptfilter,$timefilter,$instcodefilter,$ownerfilter,$coursefilter,undef,undef,$type);
323: $r->print('<form name="courselist" method="post" action="/adm/pickcourse">');
324: my %by_descrip;
325: my $numcourses = keys(%courses);
326: foreach my $course (keys(%courses)) {
327: my $descr;
328: if ($courses{$course} =~ m/^([^:]*):/i) {
329: $descr = &unescape($1);
330: } else {
331: $descr = &unescape($courses{$course});
332: }
333: my $description = $descr;
334: push (@{$by_descrip{$description}}, $course);
335: }
336: if ($numcourses > 1 && $multiple) {
337: $r->print('<input type="button" value="check all"
338: onclick="javascript:checkAll(document.courselist.course_id)" /> <input type="button" value="uncheck all"
339: onclick="javascript:uncheckAll(document.courselist.course_id)" />
340: <br /><br />');
341: }
342: foreach my $description (sort
343: { lc($a) cmp lc($b) } (keys(%by_descrip))) {
344: foreach my $course (@{$by_descrip{$description}}) {
345: my $cleandesc=&HTML::Entities::encode($description,'<>&"');
346: $cleandesc=~s/'/\\'/g;
347: my ($cdom,$cnum)=split(/\_/,$course);
348: my ($descr,$instcode,$owner,$ttype) = split/:/,$courses{$course};
349: $r->print(&course_chooser($multiple,$cdom,$cnum,$cleandesc));
350: $r->print($description.'('.
351: ($Apache::lonnet::domaindescription{$cdom}?
352: $Apache::lonnet::domaindescription{$cdom}:$cdom).")");
353: unless ($instcode eq '') {
354: $r->print(" - ".&unescape($instcode));
355: }
356: unless ($owner eq '') {
357: $r->print(", owner - ".&unescape($owner));
358: }
359: unless ($ttype eq '') {
360: $r->print('('.&Apache::lonnet::unescape($ttype).')');
361: }
362: if ($multiple) { $r->print("</label>\n"); }
363: $r->print("<br />\n");
364: }
365: }
366: if (!%courses) {
367: $r->print(&mt('None found'));
368: } elsif ($multiple) {
369: $r->print('<input type="button" value="Submit" onClick="gochoose('."'','','',1)".'" />');
370: }
371: $r->print('<input type="hidden" name="form" value="'.$env{'form.form'}.'" />'."\n".
372: '<input type="hidden" name="pickedcourse" value="" />'."\n".
373: '<input type="hidden" name="cnumelement" value="'.$env{'form.cnumelement'}.'" />'."\n".
374: '<input type="hidden" name="cdomelement" value="'.$env{'form.cdomelement'}.'" />'."\n".
375: '<input type="hidden" name="type" value="'.$type.'" />'."\n");
376: if ((exists($env{'form.roleelement'})) && ($env{'form.form'} eq 'rolechoice')) {
377: $r->print('<input type="hidden" name="roleelement" value="'.$env{'form.roleelement'}.'" />'."\n");
378: }
379: $r->print("</form>\n");
380: }
381: $r->print(&Apache::loncommon::end_page());
382: return OK;
383: }
384:
385: sub course_chooser {
386: my ($multiple,$cdom,$cnum,$cleandesc) = @_;
387: my $output;
388: if ($multiple) {
389: $output = '<label><input type="checkbox" name="course_id" value="'.$cdom.'_'.$cnum.'" />'."\n";
390: } else {
391: $output = '<input type="button" value="Select" onClick="gochoose('.
392: "'".$cnum."','".$cdom."','".$cleandesc."')".'" />'."\n";
393: }
394: return $output;
395: }
396:
397: 1;
398: __END__
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