public Validation() {
super("Hello, World!");
Document xmlDocument = mxDomUtils.createDocument();
Element sourceNode = xmlDocument.createElement("Source");
Element targetNode = xmlDocument.createElement("Target");
Element subtargetNode = xmlDocument.createElement("Subtarget");
mxGraph graph = new mxGraph();
Object parent = graph.getDefaultParent();
graph.getModel().beginUpdate();
try {
Object v1 = graph.insertVertex(parent, null, sourceNode, 20, 20, 80, 30);
Object v2 = graph.insertVertex(parent, null, targetNode, 200, 20, 80, 30);
Object v3 = graph.insertVertex(parent, null, targetNode.cloneNode(true), 200, 80, 80, 30);
Object v4 = graph.insertVertex(parent, null, targetNode.cloneNode(true), 200, 140, 80, 30);
graph.insertVertex(parent, null, subtargetNode, 200, 200, 80, 30);
Object v6 = graph.insertVertex(parent, null, sourceNode.cloneNode(true), 20, 140, 80, 30);
graph.insertEdge(parent, null, "", v1, v2);
graph.insertEdge(parent, null, "", v1, v3);
graph.insertEdge(parent, null, "", v6, v4);
// Object e4 = graph.insertEdge(parent, null, "", v1, v4);
} finally {
graph.getModel().endUpdate();
}
mxMultiplicity[] multiplicities = new mxMultiplicity[3];
// Source nodes needs 1..2 connected Targets
multiplicities[0] =
new mxMultiplicity(
true,
"Source",
null,
null,
1,
"2",
Arrays.asList(new String[] {"Target"}),
"Source Must Have 1 or 2 Targets",
"Source Must Connect to Target",
true);
// Source node does not want any incoming connections
multiplicities[1] =
new mxMultiplicity(
false,
"Source",
null,
null,
0,
"0",
null,
"Source Must Have No Incoming Edge",
null,
true); // Type does not matter
// Target needs exactly one incoming connection from Source
multiplicities[2] =
new mxMultiplicity(
false,
"Target",
null,
null,
1,
"1",
Arrays.asList(new String[] {"Source"}),
"Target Must Have 1 Source",
"Target Must Connect From Source",
true);
graph.setMultiplicities(multiplicities);
final mxGraphComponent graphComponent = new mxGraphComponent(graph);
graph.setMultigraph(false);
graph.setAllowDanglingEdges(false);
graphComponent.setConnectable(true);
graphComponent.setToolTips(true);
// Enables rubberband selection
new mxRubberband(graphComponent);
new mxKeyboardHandler(graphComponent);
// Installs automatic validation (use editor.validation = true
// if you are using an mxEditor instance)
graph
.getModel()
.addListener(
mxEvent.CHANGE,
new mxIEventListener() {
public void invoke(Object sender, mxEventObject evt) {
graphComponent.validateGraph();
}
});
// Initial validation
graphComponent.validateGraph();
getContentPane().add(graphComponent);
}
