Pull request #2089: 无JIRA任务 整理代码

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

* commit '553e6d715985ed302a87e5122440c2d6e97746e2':
  整理代码

src/core/4.widget.js

@@ -104,11 +104,28 @@
 
         _initRender: function () {
             var self = this;
-
-            function render () {
+            var initCallbackCalled = false;
+            var renderCallbackCalled = false;
+
+            function init () {
+                // 加个保险
+                if (initCallbackCalled === true) {
+                    _global.console && console.error("组件： 请检查beforeInit内部的写法，callback只能执行一次");
+                    return;
+                }
+                initCallbackCalled = true;
+                function render () {
+                    // 加个保险
+                    if (renderCallbackCalled === true) {
+                        _global.console && console.error("组件： 请检查beforeRender内部的写法，callback只能执行一次");
+                        return;
+                    }
+                    renderCallbackCalled = true;
+                    self._render();
+                }
                 if (self.options.beforeRender || self.beforeRender) {
                     self.__async = true;
-                    (self.options.beforeRender || self.beforeRender).call(self, BI.bind(self._render, self));
+                    (self.options.beforeRender || self.beforeRender).call(self, render);
                 } else {
                     self._render();
                 }
@@ -116,9 +133,9 @@
 
             if (this.options.beforeInit || this.beforeInit) {
                 this.__asking = true;
-                (this.options.beforeInit || this.beforeInit).call(this, render);
+                (this.options.beforeInit || this.beforeInit).call(this, init);
             } else {
-                render();
+                init();
             }
         },