feature: 小三角换一种实现

src/base/combination/bubble.js

@@ -321,7 +321,7 @@
             this._assertPopupViewRender();
             this.fireEvent(BI.Bubble.EVENT_BEFORE_POPUPVIEW);
             // popupVisible是为了获取其宽高, 放到可视范围之外以防止在IE下闪一下
-            this.popupView.css({left: -999999999, top: -99999999});
+            // this.popupView.css({left: -999999999, top: -99999999});
             this.popupView.visible();
             this.adjustWidth(e);
 

src/base/combination/combo.js

@@ -106,6 +106,28 @@
             });
         },
 
+        _assertPopupView: function () {
+            var self = this, o = this.options;
+            if (this.popupView == null) {
+                this.popupView = BI.createWidget(this.options.popup, {
+                    type: "bi.popup_view",
+                    showArrow: o.showArrow,
+                    value: o.value
+                }, this);
+                this.popupView.on(BI.Controller.EVENT_CHANGE, function (type, value, obj) {
+                    if (type === BI.Events.CLICK) {
+                        self.combo.setValue(self.getValue());
+                        self.fireEvent(BI.Bubble.EVENT_CHANGE, value, obj);
+                    }
+                    self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
+                });
+                this.popupView.setVisible(false);
+                BI.nextTick(function () {
+                    self.fireEvent(BI.Bubble.EVENT_AFTER_INIT);
+                });
+            }
+        },
+
         _hideView: function (e) {
             var o = this.options;
             this.fireEvent(BI.Combo.EVENT_BEFORE_HIDEVIEW);