/** * global.js  * by Garrett Smith  * Provides functionality for extending custom classes. * * ElementWrapper is a simple wrapper class. * * EventQueue provides Event Listener Functionality. *//** Provides functionality for extending classes.  *   */Function.prototype.extend = function(souper) {	this.prototype = new souper;	this.prototype.constructor = this;	this.souper = souper;	this.prototype.souper = souper;};/** Generic Element Wrapper  *   */ElementWrapper = function ElementWrapper(el){	if(arguments.length == 0) return;	this.el = el;	this.id = el.id;	if(!ElementWrapper.list[this.id])		ElementWrapper.list[this.id] = this;};ElementWrapper.list = new function(){};ElementWrapper.getWrapper = function(id){	return ElementWrapper.list[id];};/** EventQueue class Provides Event Listener Functionality. * * Instance Methods:  * *   addEventListener(etype, pointer) *    *  */EventQueue = function EventQueue(eventObj){	if(arguments.length == 0) return;	this.souper = EventQueue.souper;	this.souper(eventObj);		this.addToPool();};EventQueue.extend(ElementWrapper);EventQueue.prototype.addEventListener = function(etype, pointer){	var list = this.eventHandlerList(etype);	return list[list.length++] = pointer;};EventQueue.prototype.eventHandlerList = function(etype){		if(!this[etype])		this[etype] = new EventQueue.EventHandler(this, etype);		return this[etype];};EventQueue.prototype.removeEventListener = function(etype, pointer){	var list = this[etype];	var len = list.length;	if(len == 0) return null;		var newList = new Array(len-1);	var rtn = null;	for(var i = 0; i < len; i++)		if(list[i] != pointer)			newList[i] = list[i];		else rtn = pointer;			this[etype] = newList;	return rtn;};	EventQueue.prototype.handleEvent = function(e){		var rtn = true;	for(var i = 0, len = this[e].length; i < len; i++){			this.tempFunction = this[e][i];			if(rtn != false)					rtn = this.tempFunction();		}	return rtn;};	EventQueue.prototype.addToPool = function(){	if(!EventQueue.list[this.id])		EventQueue.list[this.id] = this;};/** EventQueue.EventHandler is private to EventQueue class. *  Instantiation and method calls are made automatically from *  EventQueue constructor and instance methods.  */EventQueue.EventHandler = function EventHandler(wrapper, etype){	this.etype = etype;	this.length = 0;	this.id = wrapper.id;	wrapper.el[etype] = new Function("return EventQueue.fireEvent('"+wrapper.id+"', '"+etype+"')");};EventQueue.fireEvent = function(id, e){		var wrapper = EventQueue.list[id];	if(!wrapper) return false;	var r = wrapper.handleEvent(e);	return r;	};EventQueue.EventHandler.prototype.toString = function toString(){	return this.id +"." +this.etype;};EventQueue.list = new Object;