this.graph.getView().addListener(mxEvent.SCALE_AND_TRANSLATE,this.refreshHandler);this.graph.getView().addListener(mxEvent.DOWN,this.refreshHandler);this.graph.getView().addListener(mxEvent.UP,this.refreshHandler)}mxUtils.extend(mxSelectionCellsHandler,mxEventSource);mxSelectionCellsHandler.prototype.graph=null;mxSelectionCellsHandler.prototype.enabled=!0;mxSelectionCellsHandler.prototype.refreshHandler=null;mxSelectionCellsHandler.prototype.maxHandlers=100;