Pull request #2843: KERNEL-11580 fix: 内存泄漏问题

Merge in VISUAL/fineui from ~DAILER/fineui:master to master

* commit 'f77d9b396e63ebfd3be6812aa767f9ad770907af':
  KERNEL-11580 fix: 内存泄漏问题

src/base/combination/bubble.js

@@ -44,7 +44,9 @@
             var self = this, o = this.options;
             this._initCombo();
             // 延迟绑定事件，这样可以将自己绑定的事情优先执行
-            BI.nextTick(this._initPullDownAction.bind(this));
+            BI.nextTick(() => {
+                !this.isDestroyed() && this._initPullDownAction();
+            });
             this.combo.on(BI.Controller.EVENT_CHANGE, function (type, value, obj) {
                 if (self.isEnabled() && self.isValid()) {
                     if (type === BI.Events.EXPAND) {

src/base/combination/combo.js

@@ -50,7 +50,9 @@
             var self = this, o = this.options;
             this._initCombo();
             // 延迟绑定事件，这样可以将自己绑定的事情优先执行
-            BI.nextTick(this._initPullDownAction.bind(this));
+            BI.nextTick(() => {
+                !this.isDestroyed() && this._initPullDownAction();
+            });
             this.combo.on(BI.Controller.EVENT_CHANGE, function (type, value, obj) {
                 if (self.isEnabled() && self.isValid()) {
                     if (type === BI.Events.EXPAND) {

src/base/combination/expander.js

@@ -26,7 +26,9 @@ BI.Expander = BI.inherit(BI.Widget, {
         this._expanded = !!o.el.open;
         this._initExpander();
         // 延迟绑定事件，这样可以将自己绑定的事情优先执行
-        BI.nextTick(this._initPullDownAction.bind(this));
+        BI.nextTick(() => {
+            !this.isDestroyed() && this._initPullDownAction();
+        });
         this.expander.on(BI.Controller.EVENT_CHANGE, function (type, value, obj) {
             if (self.isEnabled() && self.isValid()) {
                 if (type === BI.Events.EXPAND) {

src/base/combination/switcher.js

@@ -26,7 +26,9 @@ BI.Switcher = BI.inherit(BI.Widget, {
         var self = this, o = this.options;
         this._initSwitcher();
         // 延迟绑定事件，这样可以将自己绑定的事情优先执行
-        BI.nextTick(this._initPullDownAction.bind(this));
+        BI.nextTick(() => {
+            !this.isDestroyed() && this._initPullDownAction();
+        });
         this.switcher.on(BI.Controller.EVENT_CHANGE, function (type, value, obj) {
             if (self.isEnabled() && self.isValid()) {
                 if (type === BI.Events.EXPAND) {

src/base/single/button/button.basic.js

@@ -49,7 +49,9 @@ BI.BasicButton = BI.inherit(BI.Single, {
             this.setSelected(true);
         }
         // 延迟绑定事件，这样可以将自己绑定的事情优先执行
-        BI.nextTick(this.bindEvent.bind(this));
+        BI.nextTick(() => {
+            !this.isDestroyed() && this.bindEvent();
+        });
         BI.BasicButton.superclass._initRef.apply(this, arguments);
     },
 

src/core/4.widget.js

@@ -346,6 +346,7 @@
 
         _initState: function () {
             this._isMounted = false;
+            this._isDestroyed = false;
         },
 
         __initWatch: function () {
@@ -449,6 +450,10 @@
             return this._isMounted;
         },
 
+        isDestroyed: function () {
+            return this._isDestroyed;
+        },
+
         setWidth: function (w) {
             this.options.width = w;
             this._initElementWidth();
@@ -732,6 +737,7 @@
             this._isMounted = false;
             callLifeHook(this, "destroyed");
             this.destroyed = null;
+            this._isDestroyed = true;
         },
 
         _unMount: function () {