SOURCE

cola(function(model){
  model.action({
    toggle:function(self,arg){
      //如下代码为切换状态代码
      // var saveBtn=cola.widget("save"),
      //     editBtn=cola.widget("edit");
      // var val=!saveBtn.get("state");
      // saveBtn.set("state",val?"loading":"");
      // editBtn.set("state",val?"loading":"");
    }
  })
});

<c-button id="save" state="loading" caption="保存"></c-button>
<c-button id="edit" state="active" caption="Hello"></c-button>
<c-button caption="默认" click="toggle"></c-button>