child.__super__ = parent.prototype;
-
- if (protoProps.name) {
- child.prototype.toString = function() {
- return protoProps.name;
- };
- }
-
- return child;
-};
-
-
-var Events = {
-
- on: function(name, callback, context) {
- if (!eventsApi(this, 'on', name, [callback, context]) || !callback) return this;
- this._events || (this._events = {});
- var events = this._events[name] || (this._events[name] = []);
- events.push({callback: callback, context: context, ctx: context || this});
- return this;
- },
-
-
- once: function(name, callback, context) {
- if (!eventsApi(this, 'once', name, [callback, context]) || !callback) return this;
- var self = this;
- var once = _.once(function() {
- self.off(name, once);
- callback.apply(this, arguments);
- });
- once._callback = callback;
- return this.on(name, once, context);
- },
-
-
-
- off: function(name, callback, context) {
- var retain, ev, events, names, i, l, j, k;
- if (!this._events || !eventsApi(this, 'off', name, [callback, context])) return this;
- if (!name && !callback && !context) {
- this._events = {};
- return this;
- }
-
- names = name ? [name] : _.keys(this._events);
- for (i = 0, l = names.length; i < l; i++) {
- name = names[i];
- if (events = this._events[name]) {
- this._events[name] = retain = [];
- if (callback || context) {
- for (j = 0, k = events.length; j < k; j++) {
- ev = events[j];
- if ((callback && callback !== ev.callback && callback !== ev.callback._callback) ||
- (context && context !== ev.context)) {
- retain.push(ev);
- }
- }
- }
- if (!retain.length) delete this._events[name];
- }
- }
-
- return this;
- },
-
-
- trigger: function(name) {
- if (!this._events) return this;
- var args = Array.prototype.slice.call(arguments, 1);
- if (!eventsApi(this, 'trigger', name, args)) return this;
- var events = this._events[name];
- var allEvents = this._events.all;
- if (events) triggerEvents(events, args);
- if (allEvents) triggerEvents(allEvents, arguments);
- return this;
- },
-
-
- stopListening: function(obj, name, callback) {
- var listeners = this._listeners;
- if (!listeners) return this;
- var deleteListener = !name && !callback;
- if (typeof name === 'object') callback = this;
- if (obj) (listeners = {})[obj._listenerId] = obj;
- for (var id in listeners) {
- listeners[id].off(name, callback, this);
- if (deleteListener) delete this._listeners[id];
- }
- return this;
- }
-};