2 * Client-side JavaScript for group management interface.
3 * @author vy-shane AT moodle.com
4 * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
10 * Class UpdatableGroupsCombo
12 function UpdatableGroupsCombo(wwwRoot, courseId) {
13 this.wwwRoot = wwwRoot;
14 this.courseId = courseId;
16 this.connectCallback = {
18 success: function(o) {
19 if (o.responseText !== undefined) {
20 var groupsComboEl = document.getElementById("groups");
21 var membersComboEl = document.getElementById("members");
23 // Clear the members list box.
24 while (membersComboEl.firstChild) {
25 membersComboEl.removeChild(membersComboEl.firstChild);
29 if (groupsComboEl && o.responseText) {
30 var groups = eval("("+o.responseText+")");
32 // Populate the groups list box.
33 for (var i=0; i<groups.length; i++) {
34 var optionEl = document.createElement("option");
35 optionEl.setAttribute("value", groups[i].id);
36 optionEl.title = groups[i].name;
37 optionEl.innerHTML = groups[i].name;
38 groupsComboEl.appendChild(optionEl);
42 // Remove the loader gif image.
43 removeLoaderImgs("groupsloader", "groupslabel");
46 failure: function(o) {
47 removeLoaderImgs("membersloader", "memberslabel");
48 this.currentTransId = null;
53 // Add onchange event to groups list box.
54 // Okay, this is not working in IE. The onchange is never fired...
55 // I'm hard coding the onchange in ../index.php. Not ideal, but it works
56 // then. vyshane AT moodle DOT com.
58 groupsComboEl = document.getElementById("groups");
60 groupsComboEl.setAttribute("onchange", "membersCombo.refreshMembers(this.options[this.selectedIndex].value);");
64 // Hide the updategroups input since AJAX will take care of this.
65 YAHOO.util.Dom.setStyle("updategroups", "display", "none");
70 * Class UpdatableMembersCombo
72 function UpdatableMembersCombo(wwwRoot, courseId) {
73 this.wwwRoot = wwwRoot;
74 this.courseId = courseId;
76 this.connectCallback = {
77 success: function(o) {
79 if (o.responseText !== undefined) {
80 var selectEl = document.getElementById("members");
81 if (selectEl && o.responseText) {
82 var roles = eval("("+o.responseText+")");
84 // Clear the members list box.
86 while (selectEl.firstChild) {
87 selectEl.removeChild(selectEl.firstChild);
90 // Populate the members list box.
91 for (var i=0; i<roles.length; i++) {
92 var optgroupEl = document.createElement("optgroup");
93 optgroupEl.setAttribute("label",roles[i].name);
95 for(var j=0; j<roles[i].users.length; j++) {
96 var optionEl = document.createElement("option");
97 optionEl.setAttribute("value", roles[i].users[j].id);
98 optionEl.title = roles[i].users[j].name;
99 optionEl.innerHTML = roles[i].users[j].name;
100 optgroupEl.appendChild(optionEl);
102 selectEl.appendChild(optgroupEl);
106 // Remove the loader gif image.
107 removeLoaderImgs("membersloader", "memberslabel");
110 failure: function(o) {
111 removeLoaderImgs("membersloader", "memberslabel");
116 // Hide the updatemembers input since AJAX will take care of this.
117 YAHOO.util.Dom.setStyle("updatemembers", "display", "none");
121 * When a group is selected, we need to update the members.
122 * The Add/Remove Users button also needs to be disabled/enabled
123 * depending on whether or not a group is selected
125 UpdatableMembersCombo.prototype.refreshMembers = function () {
127 // Get group selector and check selection type
128 var selectEl = document.getElementById("groups");
129 var selectionCount=0,groupId=0;
131 for (var i = 0; i < selectEl.options.length; i++) {
132 if(selectEl.options[i].selected) {
135 groupId=selectEl.options[i].value;
140 var singleSelection=selectionCount == 1;
142 // Add the loader gif image (we only load for single selections)
143 if(singleSelection) {
144 createLoaderImg("membersloader", "memberslabel", this.wwwRoot);
148 var spanEl = document.getElementById("thegroup");
149 if (singleSelection) {
150 spanEl.innerHTML = selectEl.options[selectEl.selectedIndex].title;
152 spanEl.innerHTML = ' ';
155 // Clear the members list box.
156 selectEl = document.getElementById("members");
158 while (selectEl.firstChild) {
159 selectEl.removeChild(selectEl.firstChild);
163 document.getElementById("showaddmembersform").disabled = !singleSelection;
164 document.getElementById("showeditgroupsettingsform").disabled = !singleSelection;
165 document.getElementById("deletegroup").disabled = selectionCount == 0;
167 if(singleSelection) {
168 var sUrl = this.wwwRoot+"/group/index.php?id="+this.courseId+"&group="+groupId+"&act_ajax_getmembersingroup";
169 YAHOO.util.Connect.asyncRequest("GET", sUrl, this.connectCallback, null);
175 var createLoaderImg = function (elClass, parentId, wwwRoot) {
176 var parentEl = document.getElementById(parentId);
180 if (document.getElementById("loaderImg")) {
181 // A loader image already exists.
184 var loadingImg = document.createElement("img");
186 loadingImg.setAttribute("src", M.util.image_url('moodle', '/i/ajaxloader'));
187 loadingImg.setAttribute("class", elClass);
188 loadingImg.setAttribute("alt", "Loading");
189 loadingImg.setAttribute("id", "loaderImg");
190 parentEl.appendChild(loadingImg);
196 var removeLoaderImgs = function (elClass, parentId) {
197 var parentEl = document.getElementById(parentId);
199 var loader = document.getElementById("loaderImg");
200 parentEl.removeChild(loader);
205 * Updates the current groups information shown about a user when a user is selected.
207 * @global {Array} userSummaries
208 * userSummaries is added to the page via /user/selector/lib.php - group_non_members_selector::print_user_summaries()
209 * as a global that can be used by this function.
211 function updateUserSummary() {
212 var selectEl = document.getElementById('addselect'),
213 summaryDiv = document.getElementById('group-usersummary'),
214 length = selectEl.length,
219 for (i = 0; i < length; i++) {
220 if (selectEl.options[i].selected) {
226 if (selectCnt == 1 && userSummaries[selectIdx]) {
227 summaryDiv.innerHTML = userSummaries[selectIdx];
229 summaryDiv.innerHTML = '';
235 function init_add_remove_members_page(Y) {
236 var add = Y.one('#add');
237 var addselect = M.core_user.get_user_selector('addselect');
238 add.set('disabled', addselect.is_selection_empty());
239 addselect.on('user_selector:selectionchanged', function(isempty) {
240 add.set('disabled', isempty);
243 var remove = Y.one('#remove');
244 var removeselect = M.core_user.get_user_selector('removeselect');
245 remove.set('disabled', removeselect.is_selection_empty());
246 removeselect.on('user_selector:selectionchanged', function(isempty) {
247 remove.set('disabled', isempty);
250 addselect = document.getElementById('addselect');
251 addselect.onchange = updateUserSummary;