mxGraphHandler.prototype.getBoundingBox=function(a){var b=null;if(null!=a&&0<a.length)for(var c=this.graph.getModel(),d=0;d<a.length;d++)if(c.isVertex(a[d])||c.isEdge(a[d])){var e=this.graph.view.getState(a[d]);if(null!=e){var f=e;c.isVertex(a[d])&&null!=e.shape&&null!=e.shape.boundingBox&&(f=e.shape.boundingBox);null==b?b=mxRectangle.fromRectangle(f):b.add(f)}}return b};