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// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Client-side JavaScript for group management interface.
* @copyright vy-shane AT moodle.com
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @package core_group
*/
/**
* Class UpdatableGroupsCombo
*/
function UpdatableGroupsCombo(wwwRoot, courseId) {
this.wwwRoot = wwwRoot;
this.courseId = courseId;
this.connectCallback = {
success: function(o) {
if (o.responseText !== undefined) {
var groupsComboEl = document.getElementById("groups");
var membersComboEl = document.getElementById("members");
if (membersComboEl) {
// Clear the members list box.
while (membersComboEl.firstChild) {
membersComboEl.removeChild(membersComboEl.firstChild);
}
}
if (groupsComboEl && o.responseText) {
var groups = eval("("+o.responseText+")");
// Populate the groups list box.
for (var i=0; i<groups.length; i++) {
var optionEl = document.createElement("option");
optionEl.setAttribute("value", groups[i].id);
optionEl.title = groups[i].name;
optionEl.innerHTML = groups[i].name;
groupsComboEl.appendChild(optionEl);
}
}
}
// Remove the loader gif image.
removeLoaderImgs("groupsloader", "groupslabel");
},
failure: function(o) {
removeLoaderImgs("membersloader", "memberslabel");
this.currentTransId = null;
}
};
}
/**
* Class UpdatableMembersCombo
*/
function UpdatableMembersCombo(wwwRoot, courseId) {
this.wwwRoot = wwwRoot;
this.courseId = courseId;
this.connectCallback = {
success: function(t, o) {
if (o.responseText !== undefined) {
var selectEl = document.getElementById("members");
if (selectEl && o.responseText) {
var roles = eval("("+o.responseText+")");
// Clear the members list box.
if (selectEl) {
while (selectEl.firstChild) {
selectEl.removeChild(selectEl.firstChild);
}
}
// Populate the members list box.
for (var i=0; i<roles.length; i++) {
var optgroupEl = document.createElement("optgroup");
optgroupEl.setAttribute("label",roles[i].name);
for(var j=0; j<roles[i].users.length; j++) {
var optionEl = document.createElement("option");
optionEl.setAttribute("value", roles[i].users[j].id);
optionEl.title = roles[i].users[j].name;
optionEl.innerHTML = roles[i].users[j].name;
optgroupEl.appendChild(optionEl);
}
selectEl.appendChild(optgroupEl);
}
}
}
// Remove the loader gif image.
removeLoaderImgs("membersloader", "memberslabel");
},
failure: function() {
removeLoaderImgs("membersloader", "memberslabel");
}
};
// Hide the updatemembers input since AJAX will take care of this.
var updatemembers = Y.one('#updatemembers');
if (updatemembers) {
updatemembers.hide();
}
}
/**
* When a group is selected, we need to update the members.
* The Add/Remove Users button also needs to be disabled/enabled
* depending on whether or not a group is selected
*/
UpdatableMembersCombo.prototype.refreshMembers = function () {
// Get group selector and check selection type
var selectEl = document.getElementById("groups");
var selectionCount=0,groupId=0;
if( selectEl ) {
for (var i = 0; i < selectEl.options.length; i++) {
if(selectEl.options[i].selected) {
selectionCount++;
if(!groupId) {
groupId=selectEl.options[i].value;
}
}
}
}
var singleSelection=selectionCount == 1;
// Add the loader gif image (we only load for single selections)
if(singleSelection) {
createLoaderImg("membersloader", "memberslabel", this.wwwRoot);
}
// Update the label.
var spanEl = document.getElementById("thegroup");
if (singleSelection) {
spanEl.innerHTML = selectEl.options[selectEl.selectedIndex].title;
} else {
spanEl.innerHTML = ' ';
}
// Clear the members list box.
selectEl = document.getElementById("members");
if (selectEl) {
while (selectEl.firstChild) {
selectEl.removeChild(selectEl.firstChild);
}
}
document.getElementById("showaddmembersform").disabled = !singleSelection;
document.getElementById("showeditgroupsettingsform").disabled = !singleSelection;
document.getElementById("deletegroup").disabled = selectionCount == 0;
if(singleSelection) {
var sUrl = this.wwwRoot+"/group/index.php?id="+this.courseId+"&group="+groupId+"&act_ajax_getmembersingroup";
var self = this;
YUI().use('io', function (Y) {
Y.io(sUrl, {
method: 'GET',
context: this,
on: self.connectCallback
});
});
}
};
var createLoaderImg = function (elClass, parentId, wwwRoot) {
var parentEl = document.getElementById(parentId);
if (!parentEl) {
return false;
}
if (document.getElementById("loaderImg")) {
// A loader image already exists.
return false;
}
var loadingImg = document.createElement("img");
loadingImg.setAttribute("src", M.util.image_url('/i/ajaxloader', 'moodle'));
loadingImg.setAttribute("class", elClass);
loadingImg.setAttribute("alt", "Loading");
loadingImg.setAttribute("id", "loaderImg");
parentEl.appendChild(loadingImg);
return true;
};
var removeLoaderImgs = function (elClass, parentId) {
var parentEl = document.getElementById(parentId);
if (parentEl) {
var loader = document.getElementById("loaderImg");
if (loader) {
parentEl.removeChild(loader);
}
}
};
/**
* Updates the current groups information shown about a user when a user is selected.
*
* @global {Array} userSummaries
* userSummaries is added to the page via /user/selector/lib.php - group_non_members_selector::print_user_summaries()
* as a global that can be used by this function.
*/
function updateUserSummary() {
var selectEl = document.getElementById('addselect'),
summaryDiv = document.getElementById('group-usersummary'),
length = selectEl.length,
selectCnt = 0,
selectIdx = -1,
i;
for (i = 0; i < length; i++) {
if (selectEl.options[i].selected) {
selectCnt++;
selectIdx = i;
}
}
if (selectCnt == 1 && userSummaries[selectIdx]) {
summaryDiv.innerHTML = userSummaries[selectIdx];
} else {
summaryDiv.innerHTML = '';
}
return true;
}
function init_add_remove_members_page(Y) {
var add = Y.one('#add');
var addselect = M.core_user.get_user_selector('addselect');
add.set('disabled', addselect.is_selection_empty());
addselect.on('user_selector:selectionchanged', function(isempty) {
add.set('disabled', isempty);
});
var remove = Y.one('#remove');
var removeselect = M.core_user.get_user_selector('removeselect');
remove.set('disabled', removeselect.is_selection_empty());
removeselect.on('user_selector:selectionchanged', function(isempty) {
remove.set('disabled', isempty);
});
addselect = document.getElementById('addselect');
addselect.onchange = updateUserSummary;
}