text: /**
   * tree management utils render
   * @author yiminghe@gmail.com
   */
  KISSY.add("tree/tree-manager-render", function (S) {
  
      function TreeManagerRender() {
          this.get('elAttrs')['role']='tree';
      }
  
      TreeManagerRender.ATTRS = {
          // 默认 true
          // 是否显示根节点
          showRootNode: {
          }
      };
  
      S.augment(TreeManagerRender, {
          '_onSetShowRootNode': function (v) {
              this.get("rowEl")[v ? "show" : "hide"]();
          }
      });
  
      return TreeManagerRender;
  });