public abstract class AbstractEObjectNotificationTracker {

	protected EObject trackedObject = null;
	protected SelfInstallingAdapter adapter = new SelfInstallingAdapter();
	
	abstract protected void process(Notification notification);
	abstract protected void doAdapterRemovedFromObject(EObject eObject);
	abstract protected void doAdapterAddedToObject(EObject eObject);
	
	public void track(EObject eObject){	
		if ( trackedObject != null ){
			trackedObject.eAdapters().remove(adapter);
			doAdapterRemovedFromObject(trackedObject);
			removeTrackingOfContents(trackedObject);
		}
		
		trackedObject = eObject;
		
		if ( trackedObject != null){
			eObject.eAdapters().add(adapter);
			doAdapterAddedToObject(eObject);
			addTrackingOfContents(eObject);
		}
	}
	
	protected void addTrackingOfContents(EObject eObject){
		EObject containedObject;
		for (TreeIterator<EObject> i = EcoreUtil.getAllProperContents(eObject,false); i.hasNext(); )
		{
			containedObject = i.next();
			containedObject.eAdapters().add(adapter);
			doAdapterAddedToObject(containedObject);
		}		
	}

	protected void removeTrackingOfContents(EObject eObject){
		EObject containedObject;
		for (TreeIterator<EObject> i = EcoreUtil.getAllProperContents(eObject,false); i.hasNext(); )
		{
			containedObject = i.next();
			containedObject.eAdapters().remove(adapter);
			doAdapterRemovedFromObject(containedObject);
		}		
	}
	
	private class SelfInstallingAdapter extends AdapterImpl{
		
		public void notifyChanged(Notification notification)
		{
			super.notifyChanged(notification);
			selfAdapt(notification);
			process(notification);

		}

		protected void selfAdapt(Notification notification)
		{
			Object notifier = notification.getNotifier();
			if (notifier instanceof EObject)
			{
				Object feature = notification.getFeature();
				if (feature instanceof EReference && ((EReference)feature).isContainment())
				{
					handleContainment(notification);
				}
			}
		}

		protected void handleContainment(Notification notification)
		{
			switch (notification.getEventType())
			{
			case Notification.SET:
			case Notification.UNSET:
			{	
				EObject oldValue = JavaUtil.<EObject>cast(notification.getOldValue());
				if (oldValue != null)
				{
					System.err.println("Remove Adapter: " + oldValue);
					oldValue.eAdapters().remove(this);
					doAdapterRemovedFromObject(oldValue);
					removeTrackingOfContents(oldValue);
					
				}
				
				EObject newValue = JavaUtil.<EObject>cast(notification.getNewValue());
				if (newValue != null)
				{
					System.err.println("Add Adapter: " + newValue);
					newValue.eAdapters().add(this);
					doAdapterAddedToObject(newValue);
					addTrackingOfContents(newValue);
				}
				break;
			}
			case Notification.ADD:
			{
				EObject newValue = JavaUtil.<EObject>cast(notification.getNewValue());
				if (newValue != null)
				{
					System.err.println("Add Adapter: " + newValue);
					newValue.eAdapters().add(this);
					doAdapterAddedToObject(newValue);
					addTrackingOfContents(newValue);
				}
				break;
			}
			case Notification.ADD_MANY:
			{
				EObject newValue;
				Collection newValues = (Collection)notification.getNewValue();
				for (Iterator i = newValues.iterator(); i.hasNext(); )
				{
					newValue = JavaUtil.<EObject>cast(i.next());
					if (newValue != null)
					{
						System.err.println("Add Adapter: " + newValue);
						newValue.eAdapters().add(this);
						doAdapterAddedToObject(newValue);
						addTrackingOfContents(newValue);
					}
				}
				break;
			}
			case Notification.REMOVE:
			{
				EObject oldValue = JavaUtil.<EObject>cast(notification.getOldValue());
				if (oldValue != null)
				{
					System.err.println("Remove Adapter: " + oldValue);
					oldValue.eAdapters().remove(this);
					doAdapterRemovedFromObject(oldValue);
					removeTrackingOfContents(oldValue);
				}
				break;
			}
			case Notification.REMOVE_MANY:
			{
				EObject oldValue;
				Collection oldValues = (Collection)notification.getOldValue();
				for (Iterator i = oldValues.iterator(); i.hasNext(); )
				{
					oldValue = JavaUtil.<EObject>cast(i.next());
					if (oldValue != null)
					{
						System.err.println("Add Adapter: " + oldValue);
						oldValue.eAdapters().remove(this);
						doAdapterRemovedFromObject(oldValue);
						removeTrackingOfContents(oldValue);
					}
				}
				break;
			}
			}
		}

		public void setTarget(Notifier target)
		{
			System.err.println("Set Target: " + target);							
		}
		
	}
}