Annotation of loncom/interface/lonselstudent.pm, revision 1.13
1.1 foxr 1: # The LearningOnline Network with CAPA
2: # lonselstudent.pm : Reusable subs for student selection.
3: #
1.13 ! raeburn 4: # $Id: lonselstudent.pm,v 1.12 2008/06/06 19:12:59 bisitz Exp $
1.1 foxr 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::lonselstudent;
30: use Apache::lonnet;
1.10 albertel 31: use Apache::lonlocal;
32: use Apache::loncoursedata();
33: use HTML::Entities();
1.1 foxr 34:
35: #
36: # Utility function used when rendering <student> tags.
37: # This function produces a list references to four
38: # arrays:
39: # (\@course_personel, \@current_members, \@expired_members, \@future_members)
1.7 foxr 40: #
41: #
42: # Parameters;
43: #
44: # restrict - Optional.. if present and defined should be a section name.
45: # The *_members arrays will then only contain people
46: # in that section
47: #
1.1 foxr 48: # Where:
49: # course_personnel - Each element of this array is itself a reference to an array
50: # containing information about a member of the course staff.
51: # current_members - Each element of this array is itself a reference to an
52: # array that contains information about current students in
53: # the course.
54: # expired_members - Each element of this array is itself a reference to an
55: # array that contains information about students whose
56: # status has expired.
57: # future_members - Each element of this arrya is itself a reference to an
58: # array that contains information about students who will
59: # become active at a future date.
60: #
61: # Course personnel elements include:
62: # [0] Last, First of the user.
63: # [1] Role held by the user.
64: # [2] Empty.
65: # [3] Empty
66: # [4] username:domain of the user.
67: #
68: # Student member array elements are:
69: # [0] Last, First of the user.
70: # [1] Status of the user one of ("Active", "Future", or "Expired')
71: # depending on which array the user was put in.
72: # [2] Section the student is in.
73: # [3] Role of the member (student).
74: # [4] username:domain of the user.
75: #
76: sub get_people_in_class {
1.7 foxr 77: my ($section_restriction) = @_;
1.1 foxr 78: my %coursepersonnel = &Apache::lonnet::get_course_adv_roles();
79: #
80: # Enumerate the course_personnel.
81: #
82: my @course_personnel;
1.5 albertel 83: for my $role (sort(keys(%coursepersonnel))) {
84: # extract the names so we can sort them
85: my @people;
86: for my $person (split(/,/, $coursepersonnel{$role})) {
87: my ($uname,$domain) = split(/:/, $person);
88: push(@people, [&Apache::loncommon::plainname($uname,$domain),
89: $uname,$domain]);
90: }
91: @people = sort { $a->[0] cmp $b->[0] } (@people);
1.1 foxr 92:
1.5 albertel 93: for my $person (@people) {
94: push(@course_personnel, [join(':', $person->[1],$person->[2]),
95: $person->[0], '', '', $role]);
1.1 foxr 96: }
97: }
98: # Students must be split into the three categories:
99:
100: my @current_members;
101: my @future_members;
102: my @expired_members;
103:
104: # Indices into the coures data elements.
105:
106: my $section = &Apache::loncoursedata::CL_SECTION();
107: my $fullname = &Apache::loncoursedata::CL_FULLNAME();
108: my $status = &Apache::loncoursedata::CL_STATUS();
109: my $start_date = &Apache::loncoursedata::CL_START();
110:
111:
112: my $classlist = &Apache::loncoursedata::get_classlist();
1.4 albertel 113: my @keys = keys(%{$classlist});
1.11 albertel 114: # Sort by: fullname, username
1.1 foxr 115: @keys = sort {
1.8 albertel 116: lc($classlist->{$a}[$fullname]) cmp lc($classlist->{$b}[$fullname]) ||
117: lc($a) cmp lc($b)
1.4 albertel 118: } (@keys);
1.1 foxr 119:
120:
121:
122:
1.6 albertel 123: for my $user (@keys) {
1.7 foxr 124: if (!$section_restriction ||
125: ($section_restriction eq $classlist->{$user}->[$section])) {
1.1 foxr 126:
1.7 foxr 127: if ( $classlist->{$user}->[$status] eq
128: 'Active') {
129: push(@current_members, [$user, $classlist->{$user}->[$fullname],
1.6 albertel 130: $classlist->{$user}->[$section],
1.7 foxr 131: $classlist->{$user}->[$status], 'Student']);
1.1 foxr 132: } else {
1.7 foxr 133: # Need to figure out if this user is future or
134: # Expired... If the start date is in the future
135: # the user is future...else expired.
136:
137: my $now = time;
138: if ($classlist->{$user}->[$start_date] > $now) {
139: push(@future_members, [$user, $classlist->{$user}->[$fullname],
140: $classlist->{$user}->[$section],
141: "Future", "Student"]);
142: } else {
143: push(@expired_members, [$user,
144: $classlist->{$user}->[$fullname],
145: $classlist->{$user}->[$section],
146: "Expired", "Student"]);
147: }
148:
1.1 foxr 149: }
150: }
151: }
152: return (\@course_personnel,
153: \@current_members,
154: \@expired_members,
155: \@future_members);
156:
157: }
158:
159: #
160: # Utility function used when rendering the <student> tag.
161: # This function renders a segment of course personel
162: # Personel are broken up by the helper into past, current and
163: # future...each one gets is own subpage of selection.
164: # This sub renders one of these pages.
165: # Parameters:
166: # $students - Students in the section. (ref to array of references
167: # to arrays).
1.2 foxr 168: # $formname - Name of the form in which this stuff gets rendered.
1.1 foxr 169: # $formprefix - form path prefix for form element names
170: # This is used to make each form element
171: # so that the segments having to do with each
172: # set of students won't collide.
173: # $defaultusers - reference to a hash containng
174: # the set of users that should be on or off.
175: # $multiselect - True if multiselect allowed.
176: # $resultname - Name of result variable.
177: # $javascript - If true, the javascript to run this is output
178: # This should be true for the first call for a page
179: # and false for all other calls... only matters if
180: # multiselect is true.
1.13 ! raeburn 181: # $context - If email, do not include <br /><hr /> tags at the end
! 182: # of the data table.
1.1 foxr 183: # Returns:
184: # HTML text to add to the rendering of the helper.
185: #
186: sub render_student_list {
1.2 foxr 187: my ($students, $formname, $formprefix, $defaultusers,
1.13 ! raeburn 188: $multiselect, $resultname, $javascript, $context) = @_;
1.1 foxr 189:
190: my $result = "";
191:
1.8 albertel 192: # no students so no output
193: return if (!@$students);
194:
1.1 foxr 195: if ($javascript && $multiselect) {
196: $result .= <<SCRIPT;
197: <script type="text/javascript">
198: // <!--
199:
200: function findElement(name) {
201: var i;
202: var ele;
1.2 foxr 203: for(i =0; i < document.forms.$formname.elements.length; i++) {
204: ele = document.forms.$formname.elements[i];
1.1 foxr 205: if(ele.name == name) {
206: return ele;
207: }
208: }
209: return null;
210: }
211: function isStudent(element) {
212: if(element.value.indexOf(":Student") != -1) {
213: return 1;
214: }
215: return 0;
216: }
217: function section(element) {
218: var i;
219: var info;
220: if (element.value.indexOf(':') != -1) {
221: info = element.value.split(':');
222: return info[2];
223: } else {
224: return "";
225: }
226: }
227: function rightSubForm(element, which) {
228: if (element.value.indexOf(which) != -1) {
229: return true;
230: } else {
231: return false;
232: }
233: }
234:
235: function setAllStudents(value, which) {
236: var i;
237: var ele;
1.2 foxr 238: for (i =0; i < document.forms.$formname.elements.length; i++) {
239: ele = document.forms.$formname.elements[i];
1.1 foxr 240: if(isStudent(ele) && rightSubForm(ele, which)) {
241: ele.checked=value;
242: }
243: }
244: }
245: function setAllCoursePersonnel(value, which) {
246: var i;
247: var ele;
1.2 foxr 248: for (i =0; i < document.forms.$formname.elements.length; i++) {
249: ele = document.forms.$formname.elements[i];
1.1 foxr 250: if(!isStudent(ele) && rightSubForm(ele, which)) {
251: ele.checked = value;
252: }
253: }
254: }
255: function setSection(which, value, subform) {
256: var i;
257: var ele;
1.2 foxr 258: for (i =0; i < document.forms.$formname.elements.length; i++) {
259: ele = document.forms.$formname.elements[i];
1.1 foxr 260: if (ele.value.indexOf(':') != -1) {
261: if ((section(ele) == which) && rightSubForm(ele, subform)) {
262: ele.checked = value;
263: }
264: }
265: }
266: }
267:
268: function setCheckboxes(listbox, which, value) {
269: var k;
270: var elem;
271: var what;
272: elem = findElement(listbox);
273: if (elem != null) {
274: for (k = 0; k < elem.length; k++) {
275: if (elem.options[k].selected) {
1.10 albertel 276: what = elem.options[k].value;
277: if (what == 'allstudents') {
1.1 foxr 278: setAllStudents(value, which);
1.10 albertel 279: } else if (what == 'allpersonnel') {
1.1 foxr 280: setAllCoursePersonnel(value, which);
1.10 albertel 281: } else if (what == 'nosection') {
1.1 foxr 282: setSection('',value, which);
283: } else {
284: setSection(what, value, which);
285: }
286: }
287: }
288: }
289: }
290: function selectSections(listbox, which) {
291: setCheckboxes(listbox, which, true);
292:
293: }
294: function unselectSections(listbox, which) {
295: setCheckboxes(listbox, which, false);
296: }
297:
298: // -->
299: </script>
300: SCRIPT
301:
302: }
303:
304: # If multiple selections are allowed, we have a listbox
305: # at the top which allows quick selections from each section
306: # as well as from categories of personnel.
307:
308: if ($multiselect) {
309: # Make a section hash so we can add sections to the choice:
310:
311: my %sections;
312: for my $student (@$students) {
313: my $sect = $student->[2];
314: if ($sect ne "") {
315: $sections{$sect} = 1;
316: }
317: }
318:
319: $result .= '<table><tr><td>';
320:
321: my $size = scalar(keys(%sections));
322: $size += 3; # We have allstudents allpersonel nosection too.
323: if ($size > 5) {
324: $size = 5;
325: }
326: $result .= '<select multiple name="'.$formprefix
327: .'.chosensections" size="'.$size.'">'."\n";
1.10 albertel 328: $result .= '<option value="allstudents">'.&mt('All Students').'</option>';
329: $result .= '<option value="allpersonnel">'.&mt('All Course Personnel').'</option>';
330: $result .= '<option value="nosection">'.&mt('No Section').'</option>';
1.1 foxr 331: $result .= "\n";
332: foreach my $sec (sort {lc($a) cmp lc($b)} (keys(%sections))) {
333: $result .= '<option name="'.$sec.'">'.$sec.'</option>'."\n";
334: }
1.13 ! raeburn 335: $result .= '</select></td><td valign="top">';
1.12 bisitz 336: $result .= '<input type="button" name="'.$formprefix.'.select" value="'.&mt('Select').'" onclick='
1.1 foxr 337: ."'selectSections(\"$formprefix.chosensections\", \"$formprefix\")'".' /></td>';
338: $result .= '<td valign="top"><input type="button" name="'.$formprefix
1.10 albertel 339: .'.unselect" value="'.&mt('Unselect').'" onclick='.
1.1 foxr 340: "'unselectSections(\"$formprefix.chosensections\", \"$formprefix\")' ".' /></td></tr></table>';
341: }
342:
343: # Now we list the students, but the form element type
344: # will depend on whether or not multiselect is true.
345: # True -> checkboxes.
346: # False -> radiobuttons.
347:
1.3 albertel 348: $result .= &Apache::loncommon::start_data_table();
349: $result .= &Apache::loncommon::start_data_table_header_row();
1.10 albertel 350: $result .= '<th></th><th>'.&mt('Name').'</th>'."\n";
351: $result .= ' <th>'.&mt('Section').'</th>'."\n";
352: $result .= ' <th>'.&mt('Status').'</th>'."\n";
353: $result .= ' <th>'.&mt('Role').'</th>'."\n";
354: $result .= ' <th>'.&mt('Username : Domain').'</th>'."\n";
1.3 albertel 355: $result .= &Apache::loncommon::end_data_table_header_row();
1.1 foxr 356:
357: my $input_type;
358: if ($multiselect) {
359: $input_type = "checkbox";
360: } else {
361: $input_type = "radio";
362: }
363:
364: my $checked = 0;
365: for my $student (@$students) {
1.3 albertel 366: $result .= &Apache::loncommon::start_data_table_row().
367: '<td><input type="'.$input_type.'" name="'.
1.9 raeburn 368: $resultname."_forminput".'"';
1.1 foxr 369: my $user = $student->[0];
370:
371: # Figure out which students are checked by default...
372:
1.4 albertel 373: if (%$defaultusers) {
1.1 foxr 374: if (exists ($defaultusers->{$user})) {
375: $result .= ' checked ="checked" ';
376: $checked = 1;
377: }
378: } elsif (!$multiselect && !$checked) {
379: $result .= ' checked="checked" ';
380: $checked = 1; # First one for radio if no default specified.
381: }
1.4 albertel 382: $result .= ' value="'.&HTML::Entities::encode($user . ':'
383: .$student->[2] . ':'
1.1 foxr 384: .$student->[1] . ':'
385: .$student->[3] . ':'
386: .$student->[4] . ":"
387: .$formprefix, "<>&\"'")
388: ."\" /></td><td>\n";
1.4 albertel 389: $result .= &HTML::Entities::encode($student->[1], '<>&"')
1.1 foxr 390: . '</td><td align="center" >'."\n";
1.4 albertel 391: $result .= &HTML::Entities::encode($student->[2], '<>&"')
1.1 foxr 392: . '</td><td align="center">'."\n";
1.4 albertel 393: $result .= &HTML::Entities::encode($student->[3], '<>&"')
1.1 foxr 394: . '</td><td align="center">'."\n";
1.4 albertel 395: $result .= &HTML::Entities::encode($student->[4], '<>&"')
1.1 foxr 396: . '</td><td align="center">'."\n";
1.4 albertel 397: $result .= &HTML::Entities::encode($student->[0], '<>&"')
1.3 albertel 398: . '</td>'.&Apache::loncommon::end_data_table_row().
399: "\n";
1.1 foxr 400: }
1.13 ! raeburn 401: $result .= &Apache::loncommon::end_data_table();
! 402: if ($context ne 'email') {
! 403: $result .= "<br /> <hr />\n";
! 404: }
1.1 foxr 405:
406: return $result;
407: }
408:
409: 1;
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