Bug 305389 EclipsePartService: Add getInputParts(String inputUri): Collection
Add support for the new InputPart-Type with Input-URI
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/application/EPartServiceTest.java
assertEquals(partFront, partService.getActivePart());
		PartListener partListener = new PartListener();
		partService.addPartListener(partListener);
		partService.activate(partBack);
		assertEquals(1, partListener.getVisible());
		assertEquals(partBack, partListener.getVisibleParts().get(0));
		assertTrue(partListener.isValid());
		partListener.clear();
		partService.activate(partFront);
		assertEquals(1, partListener.getVisible());
		assertEquals(partFront, partListener.getVisibleParts().get(0));
		assertTrue(partListener.isValid());
	}
	public void testEvent_PartVisible2() {
		MApplication application = MApplicationFactory.eINSTANCE
				.createApplication();
		MWindow windowA = MApplicationFactory.eINSTANCE.createWindow();
		MWindow windowB = MApplicationFactory.eINSTANCE.createWindow();
		application.getChildren().add(windowA);
		application.getChildren().add(windowB);
		application.setSelectedElement(windowA);
		MPartStack stack = MApplicationFactory.eINSTANCE.createPartStack();
		windowB.getChildren().add(stack);
		windowB.setSelectedElement(stack);
		MPart partA = MApplicationFactory.eINSTANCE.createPart();
		MPart partB = MApplicationFactory.eINSTANCE.createPart();
		stack.getChildren().add(partA);
		stack.getChildren().add(partB);
		stack.setSelectedElement(partA);
		initialize(applicationContext, application);