mxGraphHandler.prototype.checkPreview=function(){this.livePreviewActive&&this.cloning?(this.resetLivePreview(),this.livePreviewActive=!1):this.maxLivePreview>=this.cellCount&&!this.livePreviewActive&&this.allowLivePreview?this.cloning&&this.livePreviewActive||(this.livePreviewUsed=this.livePreviewActive=!0):this.livePreviewUsed||null!=this.shape||(this.shape=this.createPreviewShape(this.bounds))};