// This sample demonstrates how to access the // active (selected) element in a diagram and // how to perform basic navigation in the graph // The active diagram element is obtained via the // ActiveItem property of the Diagram object DiagramItem active = diagram.getActiveItem(); // This might happen when there is no selected object if (active == null) return; // Make sure the selected object is a node if (!(active instanceof DiagramNode)) return; DiagramNode activeNode = (DiagramNode)active; // Now it is possible to access the direct relatives of the active node ArrayList<DiagramNode> relatives = new ArrayList<DiagramNode>(); for (DiagramLink link : activeNode.getOutgoingLinks()) relatives.add(link.getDestination()); for (DiagramLink link : activeNode.getIncomingLinks()) relatives.add(link.getOrigin()); |