Merge pull request #43 from justcoin/remove-event-emitter

Remove event emitter

src/events/eventemitter.js

@@ -1,98 +0,0 @@
-/**
- * EventEmitter Mixin
- *
- * Designed to be used in conjunction with a mixin "augment" function,
- * such as http://chamnapchhorn.blogspot.com/2009/05/javascript-mixins.html
- *
- * @usage augment(MyClass, EventEmitter);
- * my_inst = new MyClass();
- * my_inst.on('someEvent', function(e){ console.dir(e); });
- * my_inst.trigger('someEvent', {eventProp:'value'});
- * 
- * @example
- * // create a 'class'
- * MyClass = function() {}
- * // augment it with EventEmitter
- * EventEmitter.augment(MyClass.prototype);
- * // create a method, which triggers an event
- * MyClass.prototype.scrollComplete = function() {
- *     this.trigger('scrolled', {baz:'eck'});
- * };
- * 
- * // this callback is pulled out into a named function so that we can unbind it
- * var callback = function(e) {
- *     console.log('the scrolled event was fired! this.foo='+this.foo+', e.baz='+e.baz);
- * };
- * // create an instance of th class
- * var myinstance = new MyClass();
- * // set a property on the instance
- * myinstance.foo = 'bar';
- * // bind to the scrollComplete event
- * myinstance.on('scrolled', callback, myinstance);
- * // fire the method, which should trigger the event and therefore our callback
- * myinstance.scrollComplete();
- * // unbind the event, so that our callback should not get called
- * myinstance.removeListener('scrolled', callback);
- * // this should now not fire the callback
- * myinstance.scrollComplete();
- */
-var EventEmitter = function() {};
-/**
- * Bind a callback to an event, with an option scope context
- *
- * @param {string} name the name of the event
- * @param {function} callback the callback function to fire when the event is triggered
- * @param {object} context the scope to use for the callback (which will become 'this' inside the callback)
- */
-EventEmitter.prototype.on = function(name, callback, context) {
-    if (!context) context = this;
-    if (!this._listeners) this._listeners = {};
-    if (!this._listeners[name]) this._listeners[name] = [];
-    if (!this._unbinders) this._unbinders = {};
-    if (!this._unbinders[name]) this._unbinders[name] = [];
-    var f = function(e) {
-        callback.apply(context, [e]);
-    };
-    this._unbinders[name].push(callback);
-    this._listeners[name].push(f);
-};
-/**
- * Trigger an event, firing all bound callbacks
- * 
- * @param {string} name the name of the event
- * @param {object} event the event object to be passed through to the callback
- */
-EventEmitter.prototype.trigger = function(name, event) {
-    if (event === undefined) event = {}
-    if (!this._listeners) this._listeners = {};
-    if (!this._listeners[name]) return;
-    var i = this._listeners[name].length;
-    while (i--) this._listeners[name][i](event);
-};
-/**
- * Remove a bound listener
- * 
- * @param {string} name the name of the event
- * @param {object} event the event object to be passed through to the callback
- */
-EventEmitter.prototype.removeListener = function(name, callback) {
-    if (!this._unbinders) this._unbinders = {};
-    if (!this._unbinders[name]) return;
-    var i = this._unbinders[name].length;
-    while (i--) {
-        if (this._unbinders[name][i] === callback) {
-            this._unbinders[name].splice(i, 1);
-            this._listeners[name].splice(i, 1);
-        }
-    }
-};
-/**
- * Augment an object with the EventEmitter mixin
- * 
- * @param {object} obj The object to be augmented (often an object's protoype)
- */
-EventEmitter.augment = function(obj) {
-    for (var method in EventEmitter.prototype) {
-        if (!obj[method]) obj[method] = EventEmitter.prototype[method];
-    }
-};