mxCellEditor.prototype.destroy=function(){null!=this.textarea&&(mxEvent.release(this.textarea),null!=this.textarea.parentNode&&this.textarea.parentNode.removeChild(this.textarea),this.textarea=null);null!=this.changeHandler&&(this.graph.getModel().removeListener(this.changeHandler),this.changeHandler=null);this.zoomHandler&&(this.graph.view.removeListener(this.zoomHandler),this.zoomHandler=null)};function mxCellRenderer(){}mxCellRenderer.defaultShapes={};