code: function (ev) {
          if (!this._hasDblClickSubscriber) { return; }
          var td = this._getEventTargetTdEl(ev);
          if (!td) {return;}
  
          if (!(/\bygtv[tl][mp]h?h?/.test(td.className))) {
              this.fireEvent('dblClickEvent', {event:ev, node:this.getNodeByElement(td)}); 
              if (this._dblClickTimer) {
                  window.clearTimeout(this._dblClickTimer);
                  this._dblClickTimer = null;
              }
          }
      }
docs: Event listener for double-click events
  @method _onDblClickEvent
  @private