Diagram Basic

@Named("diagramBasicView")
@ViewScoped
public class BasicView implements Serializable {

    private DefaultDiagramModel model;

    @PostConstruct
    public void init() {
        model = new DefaultDiagramModel();
        model.setMaxConnections(-1);
        model.setConnectionsDetachable(false);

        Element elementA = new Element("A", "20em", "6em");
        elementA.addEndPoint(new DotEndPoint(EndPointAnchor.BOTTOM));

        Element elementB = new Element("B", "10em", "18em");
        elementB.addEndPoint(new DotEndPoint(EndPointAnchor.TOP));

        Element elementC = new Element("C", "40em", "18em");
        elementC.addEndPoint(new DotEndPoint(EndPointAnchor.TOP));

        model.addElement(elementA);
        model.addElement(elementB);
        model.addElement(elementC);

        model.connect(new Connection(elementA.getEndPoints().get(0), elementB.getEndPoints().get(0)));
        model.connect(new Connection(elementA.getEndPoints().get(0), elementC.getEndPoints().get(0)));
    }

    public DiagramModel getModel() {
        return model;
    }
}