silverstripe-framework/admin/thirdparty/history-js/scripts/uncompressed/history.adapter.native.js
2011-12-14 16:15:36 +01:00

122 lines
3.0 KiB
JavaScript

/**
* History.js Native Adapter
* @author Benjamin Arthur Lupton <contact@balupton.com>
* @copyright 2010-2011 Benjamin Arthur Lupton <contact@balupton.com>
* @license New BSD License <http://creativecommons.org/licenses/BSD/>
*/
// Closure
(function(window,undefined){
"use strict";
// Localise Globals
var History = window.History = window.History||{};
// Check Existence
if ( typeof History.Adapter !== 'undefined' ) {
throw new Error('History.js Adapter has already been loaded...');
}
// Add the Adapter
History.Adapter = {
/**
* History.Adapter.handlers[uid][eventName] = Array
*/
handlers: {},
/**
* History.Adapter._uid
* The current element unique identifier
*/
_uid: 1,
/**
* History.Adapter.uid(element)
* @param {Element} element
* @return {String} uid
*/
uid: function(element){
return element._uid || (element._uid = History.Adapter._uid++);
},
/**
* History.Adapter.bind(el,event,callback)
* @param {Element} element
* @param {String} eventName - custom and standard events
* @param {Function} callback
* @return
*/
bind: function(element,eventName,callback){
// Prepare
var uid = History.Adapter.uid(element);
// Apply Listener
History.Adapter.handlers[uid] = History.Adapter.handlers[uid] || {};
History.Adapter.handlers[uid][eventName] = History.Adapter.handlers[uid][eventName] || [];
History.Adapter.handlers[uid][eventName].push(callback);
// Bind Global Listener
element['on'+eventName] = (function(element,eventName){
return function(event){
History.Adapter.trigger(element,eventName,event);
};
})(element,eventName);
},
/**
* History.Adapter.trigger(el,event)
* @param {Element} element
* @param {String} eventName - custom and standard events
* @param {Object} event - a object of event data
* @return
*/
trigger: function(element,eventName,event){
// Prepare
event = event || {};
var uid = History.Adapter.uid(element),
i,n;
// Apply Listener
History.Adapter.handlers[uid] = History.Adapter.handlers[uid] || {};
History.Adapter.handlers[uid][eventName] = History.Adapter.handlers[uid][eventName] || [];
// Fire Listeners
for ( i=0,n=History.Adapter.handlers[uid][eventName].length; i<n; ++i ) {
History.Adapter.handlers[uid][eventName][i].apply(this,[event]);
}
},
/**
* History.Adapter.extractEventData(key,event,extra)
* @param {String} key - key for the event data to extract
* @param {String} event - custom and standard events
* @return {mixed}
*/
extractEventData: function(key,event){
var result = (event && event[key]) || undefined;
return result;
},
/**
* History.Adapter.onDomLoad(callback)
* @param {Function} callback
* @return
*/
onDomLoad: function(callback) {
var timeout = window.setTimeout(function(){
callback();
},2000);
window.onload = function(){
clearTimeout(timeout);
callback();
};
}
};
// Try and Initialise History
if ( typeof History.init !== 'undefined' ) {
History.init();
}
})(window);