无JIRA : NodeButton也添加shortcut

src/base/single/button/button.node.js

@@ -53,4 +53,5 @@ BI.NodeButton = BI.inherit(BI.BasicButton, {
             this.fireEvent(BI.Controller.EVENT_CHANGE, BI.Events.EXPAND, this.getValue(), this);
         }
     }
-});
+});
+BI.shortcut("bi.node_button", BI.NodeButton);