Fix eventManager memory leak

Author: pandamicro

cocos2d/core/event-manager/CCEventListener.js

@@ -277,15 +277,16 @@ cc.EventListener.CUSTOM = 8;
 
 cc._EventListenerCustom = cc.EventListener.extend({
     _onCustomEvent: null,
-    ctor: function (listenerId, callback) {
+    ctor: function (listenerId, callback, target) {
         this._onCustomEvent = callback;
-        var selfPointer = this;
-        var listener = function (event) {
-            if (selfPointer._onCustomEvent !== null)
-                selfPointer._onCustomEvent(event);
-        };
+        this._target = target;
 
-        cc.EventListener.prototype.ctor.call(this, cc.EventListener.CUSTOM, listenerId, listener);
+        cc.EventListener.prototype.ctor.call(this, cc.EventListener.CUSTOM, listenerId, this._callback);
+    },
+
+    _callback: function (event) {
+        if (this._onCustomEvent !== null)
+            this._onCustomEvent.call(this._target, event);
     },
 
     checkAvailable: function () {
@@ -308,31 +309,31 @@ cc._EventListenerMouse = cc.EventListener.extend({
     onMouseScroll: null,
 
     ctor: function () {
-        var selfPointer = this;
-        var listener = function (event) {
-            var eventType = cc.EventMouse;
-            switch (event._eventType) {
-                case eventType.DOWN:
-                    if (selfPointer.onMouseDown)
-                        selfPointer.onMouseDown(event);
-                    break;
-                case eventType.UP:
-                    if (selfPointer.onMouseUp)
-                        selfPointer.onMouseUp(event);
-                    break;
-                case eventType.MOVE:
-                    if (selfPointer.onMouseMove)
-                        selfPointer.onMouseMove(event);
-                    break;
-                case eventType.SCROLL:
-                    if (selfPointer.onMouseScroll)
-                        selfPointer.onMouseScroll(event);
-                    break;
-                default:
-                    break;
-            }
-        };
-        cc.EventListener.prototype.ctor.call(this, cc.EventListener.MOUSE, cc._EventListenerMouse.LISTENER_ID, listener);
+        cc.EventListener.prototype.ctor.call(this, cc.EventListener.MOUSE, cc._EventListenerMouse.LISTENER_ID, this._callback);
+    },
+
+    _callback: function (event) {
+        var eventType = cc.EventMouse;
+        switch (event._eventType) {
+            case eventType.DOWN:
+                if (this.onMouseDown)
+                    this.onMouseDown(event);
+                break;
+            case eventType.UP:
+                if (this.onMouseUp)
+                    this.onMouseUp(event);
+                break;
+            case eventType.MOVE:
+                if (this.onMouseMove)
+                    this.onMouseMove(event);
+                break;
+            case eventType.SCROLL:
+                if (this.onMouseScroll)
+                    this.onMouseScroll(event);
+                break;
+            default:
+                break;
+        }
     },
 
     clone: function () {
@@ -501,11 +502,12 @@ cc._EventListenerFocus = cc.EventListener.extend({
     },
     onFocusChanged: null,
     ctor: function(){
-        var listener = function(event){
-            if(this.onFocusChanged)
-                this.onFocusChanged(event._widgetLoseFocus, event._widgetGetFocus);
-        };
-        cc.EventListener.prototype.ctor.call(this, cc.EventListener.FOCUS, cc._EventListenerFocus.LISTENER_ID, listener);
+        cc.EventListener.prototype.ctor.call(this, cc.EventListener.FOCUS, cc._EventListenerFocus.LISTENER_ID, this._callback);
+    },
+    _callback: function (event) {
+        if (this.onFocusChanged) {
+            this.onFocusChanged(event._widgetLoseFocus, event._widgetGetFocus);
+        }
     }
 });
 

cocos2d/core/event-manager/CCEventManager.js

@@ -258,8 +258,8 @@ cc.eventManager = /** @lends cc.eventManager# */{
 
             if (!this._inDispatch) {
                 listeners.clear();
-                delete this._listenersMap[listenerID];
             }
+            delete this._listenersMap[listenerID];
         }
 
         var locToAddedListeners = this._toAddedListeners, listener;
@@ -751,8 +751,8 @@ cc.eventManager = /** @lends cc.eventManager# */{
      * @param {function} callback
      * @return {cc.EventListener} the generated event. Needed in order to remove the event from the dispatcher
      */
-    addCustomListener: function (eventName, callback) {
-        var listener = new cc._EventListenerCustom(eventName, callback);
+    addCustomListener: function (eventName, callback, target) {
+        var listener = new cc._EventListenerCustom(eventName, callback, target);
         this.addListener(listener, 1);
         return listener;
     },