/**
* {@inheritDoc}
*
* @see
* org.eclipse.emf.compare.uml2.diff.internal.extension.IDiffExtensionFactory#create(org.eclipse.emf.compare.diff.metamodel.DiffElement,
* org.eclipse.emf.ecore.util.EcoreUtil.CrossReferencer)
*/
public AbstractDiffExtension create(
DiffElement input, EcoreUtil.CrossReferencer crossReferencer) {
final ModelElementChangeLeftTarget changeLeftTarget = (ModelElementChangeLeftTarget) input;
final Message message = (Message) changeLeftTarget.getLeftElement();
final UMLMessageChangeLeftTarget ret =
UML2DiffFactory.eINSTANCE.createUMLMessageChangeLeftTarget();
final MessageEnd receiveEvent = message.getReceiveEvent();
if (receiveEvent != null) {
hideEvent(receiveEvent, ret, crossReferencer);
}
final MessageEnd sendEvent = message.getSendEvent();
if (sendEvent != null) {
hideEvent(sendEvent, ret, crossReferencer);
}
ret.getHideElements().add(changeLeftTarget);
ret.getRequires().add(changeLeftTarget);
ret.setRemote(changeLeftTarget.isRemote());
ret.setRightParent(changeLeftTarget.getRightParent());
ret.setLeftElement(changeLeftTarget.getLeftElement());
return ret;
}
public static boolean canReorientTarget(Message message, Element newTarget) {
if (message == null || newTarget == null) {
return false;
}
Element source = null;
MessageEnd sendEvent = message.getSendEvent();
if (sendEvent instanceof OccurrenceSpecification) {
EList<Lifeline> covereds = ((OccurrenceSpecification) sendEvent).getCovereds();
if (!covereds.isEmpty()) {
source = covereds.get(0);
}
} else if (sendEvent instanceof Gate
// special handling of SyncMessages due to #425666
&& MessageSort.SYNCH_CALL_LITERAL != message.getMessageSort()) {
source = ((Gate) sendEvent).getOwner();
}
return canExist(message, source, newTarget);
}