Bug 310199 Need logic to grant focus to parts when their tab item has been selected
Build Id: I20100421-2055 I'm not sure why, but I noticed that in e4 on the macosx-cocoa, selecting an element often causes a blue focus halo to appear. It's a bit ugly.
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/application/EPartServiceTest.java
}
	public void testHidePart_PartInAnotherWindow() {
		MApplication application = createApplication(
				new String[] { "partInWindow1" },
				new String[] { "partInWindow2" });
		MWindow window1 = application.getChildren().get(0);
		MWindow window2 = application.getChildren().get(1);
		getEngine().createGui(window1);
		getEngine().createGui(window2);
		EPartService partService1 = (EPartService) window1.getContext().get(
				EPartService.class.getName());
		EPartService partService2 = (EPartService) window2.getContext().get(
				EPartService.class.getName());
		MPart part1 = partService1.findPart("partInWindow1");
		MPart part2 = partService2.findPart("partInWindow2");
		assertTrue(part1.isToBeRendered());
		assertTrue(part2.isToBeRendered());
		partService1.hidePart(part2);
		assertTrue(part1.isToBeRendered());
		assertTrue(part2.isToBeRendered());
		partService2.hidePart(part1);
		assertTrue(part1.isToBeRendered());
		assertTrue(part2.isToBeRendered());
		partService1.hidePart(part1);
		assertFalse(part1.isToBeRendered());
		assertTrue(part2.isToBeRendered());
		partService2.hidePart(part2);
		assertFalse(part1.isToBeRendered());
		assertFalse(part2.isToBeRendered());
	}