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
}
			activated++;
			activatedParts.add(part);
		}
		public void partBroughtToTop(MPart part) {
		}
		public void partDeactivated(MPart part) {
			if (valid && part == null) {
				valid = false;
			}
			deactivated++;
			deactivatedParts.add(part);
		}
		public void partHidden(MPart part) {
			if (valid && part == null) {
				valid = false;
			}
			hidden++;
			hiddenParts.add(part);
		}
		public void partVisible(MPart part) {
			if (valid && part == null) {
				valid = false;
			}
			visible++;
			visibleParts.add(part);
		}
	}
}