text: /**
   * 十字型的树节点
   * @class BI.LastTreeNodeCheckbox
   * @extends BI.IconButton
   */
  BI.LastTreeNodeCheckbox = BI.inherit(BI.IconButton, {
      _defaultConfig: function() {
          return BI.extend( BI.LastTreeNodeCheckbox.superclass._defaultConfig.apply(this, arguments), {
              extraCls: "tree-collapse-icon-type4",
              iconWidth: 25,
              iconHeight: 25
          });
      },
      _init:function() {
          BI.LastTreeNodeCheckbox.superclass._init.apply(this, arguments);
  
      },
      setSelected: function(v){
          BI.LastTreeNodeCheckbox.superclass.setSelected.apply(this, arguments);
          if(v===true) {
              this.element.addClass("tree-expand-icon-type3");
          } else {
              this.element.removeClass("tree-expand-icon-type3");
          }
      }
  });
  $.shortcut("bi.last_tree_node_checkbox", BI.LastTreeNodeCheckbox);