/**
* Adds listeners on
*
* <ul>
* <li>Affixed Child Node
* <li>graphical parent, when its a {@link Property} (we add the listener on its Type)
* </ul>
*/
public void activate() {
IGraphicalEditPart gep =
(IGraphicalEditPart) getDecoratorTarget().getAdapter(IGraphicalEditPart.class);
assert gep != null;
View view = ((View) gep.getModel());
if (view instanceof Node) {
// the location of the decorator can change if it's an Affixed Child
// Node
if (isInherited((Node) view) && Util.isAffixedChildNode(gep)) {
DiagramEventBroker.getInstance(gep.getEditingDomain())
.addNotificationListener(gep.getNotationView(), notificationListener);
}
}
// if the graphical parent is a Property, we add a listener on the type
// of the property, to refresh the decoration
EObject parent = view.eContainer();
if (parent instanceof DecorationNode) {
parent = parent.eContainer();
}
if (parent instanceof View) {
EObject el = ((View) parent).getElement();
if (el instanceof Property) {
DiagramEventBroker.getInstance(gep.getEditingDomain())
.addNotificationListener(
el, UMLPackage.eINSTANCE.getTypedElement_Type(), notificationListener);
}
}
/*
* We listen the changes on the UML parent, in order to know if the
* element is changing of parent Adding a listener using the following
* EReference doesn't work UMLPackage.eINSTANCE.getElement_Owner();
* UMLPackage.eINSTANCE.getProperty_Class();
* UMLPackage.eINSTANCE.getNamedElement_Namespace(); that's why we
* listen the parent
*/
if (view.getElement() instanceof Element) {
Element semanticElement = (Element) view.getElement();
/*
* We need add a listener only if the element is an element which
* can be inherited, like Property, Operation, Signal, Classifier...
*/
if (semanticElement != null && canBeInherited(semanticElement)) {
// we listen if the container of the element changes!
if (semanticElement.eContainer() != null) {
DiagramEventBroker.getInstance(gep.getEditingDomain())
.addNotificationListener(semanticElement.eContainer(), notificationListener);
}
}
}
}
/** Removes the listeners and the decorations */
public void deactivate() {
removeDecoration();
IGraphicalEditPart gep =
(IGraphicalEditPart) getDecoratorTarget().getAdapter(IGraphicalEditPart.class);
assert gep != null;
DiagramEventBroker.getInstance(gep.getEditingDomain())
.removeNotificationListener(gep.getNotationView(), notificationListener);
View view = ((View) gep.getModel());
if (view instanceof Node) {
// the location of the decorator can change if it's an Affixed Child
// Node
if (isInherited((Node) view) && Util.isAffixedChildNode(gep)) {
DiagramEventBroker.getInstance(gep.getEditingDomain())
.removeNotificationListener(gep.getNotationView(), notificationListener);
}
}
EObject parent = view.eContainer();
if (parent instanceof View) {
EObject el = ((View) parent).getElement();
if (el instanceof Property) {
DiagramEventBroker.getInstance(gep.getEditingDomain())
.removeNotificationListener(
el, UMLPackage.eINSTANCE.getTypedElement_Type(), notificationListener);
}
}
if (view.getElement() instanceof Element) {
Element semanticElement = (Element) view.getElement();
if (semanticElement != null) {
if (semanticElement.eContainer() != null) {
DiagramEventBroker.getInstance(gep.getEditingDomain())
.addNotificationListener(semanticElement.eContainer(), notificationListener);
}
}
}
}