@Override
protected Command createMoveChildCommand(EditPart child, EditPart after) {
if (!(child instanceof ShapeEditPart)) {
return null;
}
ShapeEditPart toMove = (ShapeEditPart) child;
ShapePart toMovePart = (ShapePart) (((ShapeModel) toMove.getModel()).getSapphirePart());
ShapeFactoryPart factoryPart = (ShapeFactoryPart) toMovePart.getParentPart();
List<ShapePart> childShapes = factoryPart.getChildren();
if (!(after instanceof ShapeEditPart)) {
return new MoveShapeInFactoryCommand(factoryPart, toMovePart, -1);
} else {
ShapeEditPart afterShape = (ShapeEditPart) after;
ShapePart afterShapePart =
(ShapePart) (((ShapeModel) afterShape.getModel()).getSapphirePart());
int oldIndex = childShapes.indexOf(toMovePart);
int newIndex = childShapes.indexOf(afterShapePart);
// subtract self from the index
if (newIndex > oldIndex) {
newIndex--;
}
return new MoveShapeInFactoryCommand(factoryPart, toMovePart, newIndex);
}
}