Bug 28269 type hierarchy makes work much slower even though it's invisible
20021210 i had a big type hierarchy open but put in the background - behind the package explorer i added 1 type to the workspace boom - tyhe whole thing froze for 2 minutes because the type hierarchy was doing a lot of work that i did not ask for and no busy cursor it makes it quite impossible to work if you have a type hierarchy open anywhere
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
}
			if (nSelected == 1) {
				revealElementInEditor(selected.get(0), fMethodsViewer);
			}
		}
	}
	
	private void typeSelectionChanged(ISelection sel) {
		if (sel instanceof IStructuredSelection) {
			List selected= ((IStructuredSelection)sel).toList();
			int nSelected= selected.size();
			if (nSelected != 0) {
				List types= new ArrayList(nSelected);
				for (int i= nSelected-1; i >= 0; i--) {
					Object elem= selected.get(i);
					if (elem instanceof IType && !types.contains(elem)) {
						types.add(elem);
					}
				}
				if (types.size() == 1) {
					fSelectedType= (IType) types.get(0);
					updateMethodViewer(fSelectedType);
				} else if (types.size() == 0) {
					
				}
				if (nSelected == 1) {
					revealElementInEditor(selected.get(0), getCurrentViewer());
				}
			} else {
				fSelectedType= null;