整理代码

src/core/3.ob.js

@@ -73,10 +73,10 @@
         // 获得一个当前对象的引用
         _initRef: function () {
             if (this.options.__ref) {
-                this.options.__ref.call(this, this);
+                this.options.__ref.call(this, this.$delegate || this);
             }
             if (this.options.ref) {
-                this.options.ref.call(this, this);
+                this.options.ref.call(this);
             }
         },
 

src/core/4.widget.js

@@ -52,8 +52,14 @@
         _constructed: function () {
             if (this.setup) {
                 pushTarget(this);
-                this.service = this.setup(this.options);
+                var delegate = this.setup(this.options);
-                this.render = BI.isPlainObject(this.service) ? this.service.render : this.service;
+                if (BI.isPlainObject(delegate)) {
+                    this.render = delegate.render;
+                    // setup返回一个json，即对外暴露的方法
+                    this.$delegate = delegate;
+                } else {
+                    this.render = delegate;
+                }
                 popTarget();
             }
         },