// create the GraphBox at the right position...
final GraphBox box = this.graphBoxCreator.createGraphBox(this, gw);
box.setY(y);
box.updateX(x, y, new HashSet<GraphBox>());
box.arrange(Arrange.values()[0]);
box.getElement().revalidate();
this.boxes.put(gw, box);
this.rootList.add(gw);
// this.createOperator(newOp);