public RefactoringStatus checkConditions(IProgressMonitor pm,
			CheckConditionsContext context) throws OperationCanceledException {
		ResourceChangeChecker checker = (ResourceChangeChecker) context
				.getChecker(ResourceChangeChecker.class);
		IResourceChangeDescriptionFactory deltaFactory = checker
				.getDeltaFactory();
		IResourceDelta[] affectedChildren = deltaFactory.getDelta()
				.getAffectedChildren();
		
		for (IResourceDelta resourceDelta : affectedChildren) {
			if(resourceDelta.getMovedFromPath() != null)
				System.out.println("from: " + resourceDelta.getResource().getProject().getName());
			
			if(resourceDelta.getMovedToPath() != null)
				System.out.println("to: " + resourceDelta.getResource().getProject().getName());
			
		}
		
		return new RefactoringStatus(); // ok
	}