text: function showDropdownMenu(ele) {
      var para = ele.parentNode,
          clsName = para.className;
      
      if(clsName === 'co-m-cog ng-isolate-scope') {
          ele.parentNode.className = 'co-m-cog ng-isolate-scope open';
      } else {
          ele.parentNode.className = 'co-m-cog ng-isolate-scope';
      }
  }
  