/**
* Delete the given connection as well its net.sf.orcc.df.Connection linked (its business object)
*
* @param fp The current FeatureProvider instance
* @param c A connection pictogram (FreeFormConnection or any other class derived from Connection)
*/
public static boolean deleteConnection(
final IFeatureProvider fp, final org.eclipse.graphiti.mm.pictograms.Connection c) {
// Initialize the delete context
final DeleteContext delCtxt = new DeleteContext(c);
delCtxt.setMultiDeleteInfo(new MultiDeleteInfo(false, false, 1));
// Silently execute deletion (user will not be asked before deletion)
final IDeleteFeature delFeature = fp.getDeleteFeature(delCtxt);
if (delFeature.canDelete(delCtxt)) {
delFeature.delete(delCtxt);
return true;
}
return false;
}
private void updateConnectionIfNeeded(DataAssociation association, ItemAwareElement value) {
DiagramEditor diagramEditor = ModelUtil.getDiagramEditor(association);
if (diagramEditor == null) return;
boolean hasDoneChanges = false;
Diagram diagram = diagramEditor.getDiagramTypeProvider().getDiagram();
IFeatureProvider fp = diagramEditor.getDiagramTypeProvider().getFeatureProvider();
Shape taskShape = null;
EObject container = association.eContainer();
if (container instanceof Activity || container instanceof Event) {
for (PictogramElement pe :
Graphiti.getLinkService().getPictogramElements(diagram, container)) {
if (pe instanceof Shape
&& BusinessObjectUtil.getFirstElementOfType(pe, BPMNShape.class) != null) {
taskShape = (Shape) pe;
break;
}
}
}
Shape dataShape = null;
if (value instanceof DataObject
|| value instanceof DataObjectReference
|| value instanceof DataStore
|| value instanceof DataStoreReference
|| value instanceof DataInput
|| value instanceof DataOutput) {
List<PictogramElement> pes =
Graphiti.getLinkService().getPictogramElements(diagram, (EObject) value);
for (PictogramElement p : pes) {
if (BusinessObjectUtil.getFirstElementOfType(p, BPMNShape.class) != null) {
dataShape = (Shape) p;
break;
}
}
}
Connection connection =
DataAssociationFeatureContainer.findDataAssociation(diagram, association);
if (connection != null) {
// There's an existing DataAssociation connection which needs to
// either be reconnected or deleted, depending on what the combobox
// selection is.
if (dataShape != null) {
// need to reconnect the DataAssociation
ReconnectionContext rc = null;
if (association instanceof DataInputAssociation) {
Point p = GraphicsUtil.createPoint(connection.getStart());
Anchor a = AnchorUtil.createAnchor((AnchorContainer) dataShape, p);
rc = new ReconnectionContext(connection, connection.getStart(), a, null);
rc.setTargetPictogramElement(dataShape);
rc.setTargetLocation(Graphiti.getPeService().getLocationRelativeToDiagram(a));
rc.setReconnectType(ReconnectionContext.RECONNECT_SOURCE);
} else {
Point p = GraphicsUtil.createPoint(connection.getEnd());
Anchor a = AnchorUtil.createAnchor(dataShape, p);
rc = new ReconnectionContext(connection, a, connection.getEnd(), null);
rc.setTargetPictogramElement(dataShape);
rc.setTargetLocation(Graphiti.getPeService().getLocationRelativeToDiagram(a));
rc.setReconnectType(ReconnectionContext.RECONNECT_TARGET);
}
IReconnectionFeature rf = fp.getReconnectionFeature(rc);
if (rf.canReconnect(rc)) {
rf.reconnect(rc);
hasDoneChanges = true;
}
} else {
// need to delete the DataAssociation connection
DeleteContext dc = new DeleteContext(connection);
connection.getLink().getBusinessObjects().remove(0);
IDeleteFeature df = fp.getDeleteFeature(dc);
df.delete(dc);
}
} else if (dataShape != null) {
// There is no existing DataAssociation connection, but the newly selected source or target
// is some kind of data object shape, so we need to create a connection between the Activity
// (or Throw/Catch Event) that owns the DataAssociation, and the new data object shape.
Point p = GraphicsUtil.createPoint((AnchorContainer) dataShape);
Anchor ownerAnchor = AnchorUtil.createAnchor(taskShape, p);
p = GraphicsUtil.createPoint(taskShape);
Anchor peAnchor = AnchorUtil.createAnchor((AnchorContainer) dataShape, p);
AddConnectionContext ac = null;
if (association instanceof DataOutputAssociation) {
ac = new AddConnectionContext(ownerAnchor, peAnchor);
} else {
ac = new AddConnectionContext(peAnchor, ownerAnchor);
}
ac.putProperty(GraphitiConstants.BUSINESS_OBJECT, association);
ac.setNewObject(association);
IAddFeature af = fp.getAddFeature(ac);
if (af.canAdd(ac)) {
PictogramElement pe = af.add(ac);
if (pe instanceof Connection) {
connection = (Connection) pe;
hasDoneChanges = true;
}
}
}
if (hasDoneChanges) {
FeatureSupport.updateConnection(
diagramEditor.getDiagramTypeProvider().getFeatureProvider(), connection);
}
}