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
* Sets the history entries
	 */
	public void setHistoryEntries(IJavaElement[] elems) {
		fInputHistory.clear();
		for (int i= 0; i < elems.length; i++) {
			fInputHistory.add(elems[i]);
		}
		updateHistoryEntries();
	}
	
	/**
	 * Selects an member in the methods list or in the current hierarchy.
	 */	
	public void selectMember(IMember member) {
		ICompilationUnit cu= member.getCompilationUnit();
		if (cu != null && cu.isWorkingCopy()) {
			member= (IMember) cu.getOriginal(member);
			if (member == null) {
				return;
			}
		}
		if (member.getElementType() != IJavaElement.TYPE) {
			if (fHierarchyLifeCycle.isReconciled() && cu != null) {
				try {
					member= (IMember) EditorUtility.getWorkingCopy(member);
					if (member == null) {
						return;
					}
				} catch (JavaModelException e) {
					JavaPlugin.log(e);