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/**
* loader module
* @param {object} window global object
* @param {function} $ jQuery library
* @param {object} EventMgr EventMgr library
* @param {object} App Application
*/
App.PreLoader = function(window, $, EventMgr, App) {
'use strict';
var init = function() {
EventMgr.bind('getAjaxRequest', showLoader);
EventMgr.bind('ajaxError', hideLoader);
EventMgr.bind('giveAjaxRequest', hideLoader);
EventMgr.bind('showLoader', showLoader);
EventMgr.bind('hideLoader', hideLoader);
},
favicon = 'progress_favicon.gif',
loader = function() {
return App.Dom.byId('favicon');
},
changeFavicon = function(src, type) {
var link = document.createElement('link'),
oldLink = document.getElementById('favicon');
if (oldLink === null) { return; }
link.id = 'favicon';
link.rel = 'shortcut icon';
link.href = src;
link.setAttribute('type', type);
if (oldLink) {
if (document.head) {
document.head.removeChild(oldLink);
} else {
document.getElementsByTagName('head')[0].removeChild(oldLink);
}
}
if (document.head) {
document.head.appendChild(link);
} else {
document.getElementsByTagName('head')[0].appendChild(link);
}
link = null;
oldLink = null;
},
showLoader = function() {
changeFavicon(pageInfo.theme +
pageInfo.localDir + favicon, 'image/gif');
},
hideLoader = function() {
changeFavicon(pageInfo.theme +
pageInfo.localDir + pageInfo.favicon, 'x-icon');
};
return {
init: init
};
}(window, $, EventMgr, App);