public class GeometricLineVisual extends GeometryNode<Line> {

	public GeometricLineVisual() {
		super(new Line(10, 10, 100, 100));
	}

}

public class LinePart extends AbstractContentPart<GeometricLineVisual>
		implements ITransformableContentPart<GeometricLineVisual>, IResizableContentPart<GeometricLineVisual>,
		PropertyChangeListener {

	@Override
	protected GeometricLineVisual doCreateVisual() {
		return new GeometricLineVisual();
	}

	@Override
	protected SetMultimap<? extends Object, String> doGetContentAnchorages() {
		// Nothing to anchor to
		return HashMultimap.create();
	}

	@Override
	protected List<? extends Object> doGetContentChildren() {
		// we don't have any children.
		return Collections.emptyList();
	}

	@Override
	protected void doRefreshVisual(GeometricLineVisual visual) {
		// use the IResizableContentPart API to resize the visual

		
		setVisualSize(getContentSize());
		// use the ITransformableContentPart API to position the visual
		setVisualTransform(getContentTransform());

	}

	@Override
	public GeometricLine getContent() {
		return (GeometricLine) super.getContent();
	}

	@Override
	public Dimension getContentSize() {

		return getContent().getBounds().getSize();
	}

	@Override
	public Affine getContentTransform() {
		Rectangle bounds = getContent().getBounds();
		
		return new Affine(new Translate(bounds.getX(), bounds.getY()));
	}

	@Override
	public void propertyChange(PropertyChangeEvent evt) {
		// TODO Auto-generated method stub

		
	}

	@Override
	public void setContentSize(Dimension totalSize) {
		
		getContent().getBounds().setSize(totalSize);

	}

	@Override
	public void setContentTransform(Affine totalTransform) {
		// storing the new position
		Rectangle bounds = getContent().getBounds().getCopy();
		bounds.setX(totalTransform.getTx());
		bounds.setY(totalTransform.getTy());
		getContent().setBounds(bounds);
		
	}

	@Override
	public void setVisualSize(Dimension totalSize) {
		
		IResizableContentPart.super.setVisualSize(totalSize);
		// perform layout pass to apply size
		getVisual().getParent().layout();
	}

}