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csuwildcat / Listener.js

Last active 2011-02-09 — forked from ibolmo/Listener.js

// Element Listener Mixin
(function(){
 
var setup = function(element){
	var listener = new Events, removeEvent = listener.removeEvent;
	listener.removeEvent = function(key, value){
		removeEvent(key, value);
		element.removeEvent(key, value);
	};
	return listener;
};
 
this.Listener = new Class({
 
	attach: function(key, value){
		if (!this.$listener) this.$listener = setup(this.toElement());
		this.$listener.addEvent(key, value);
		this.toElement().addEvent(key, value);
	}.overloadSetter(),
 
	detach: function(key, value){
		if (this.$listener){
			if (typeof key == 'string') this.$listener.removeEvent(key, value);
			else this.$listener.removeEvents(key);	
		}
		return this;
	},
 
	toElement: function(){
		return this.element;
	}
 
});
 
}).call(this);
 
// Implementation
var MyClass = new Class({
	
	Implements: [Listener, Class.Binds],
	
	initialize: function(){
		this.element = new Element('div');
		
		this.attach({
			click: this.bound('onClick'),
			'keyup:relay(:input)': this.bound('onKeyUp')
		});
	}
	
});
 
// Use
var myInstance = new MyClass();
myInstance.detach();