Bug 31818 [navigation] Open Type Hierarchy loses selection
build I20030211 - open a CU (e.g. BookmarkNavigator.java) - position the cursor between methods - F4 - it opens the type hierarchy on the class, but also changes the text editor's selection to select the class name It should not affect the text editor selection.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
} else {
			return (IType) elem;
		}
	}
	
	private void internalSelectType(IMember elem, boolean reveal) {	
		TypeHierarchyViewer viewer= getCurrentViewer();
		viewer.removePostSelectionChangedListener(fSelectionChangedListener);
		viewer.setSelection(elem != null ? new StructuredSelection(elem) : StructuredSelection.EMPTY, reveal);
		viewer.addPostSelectionChangedListener(fSelectionChangedListener);
	}
		
	/**
	 * When the input changed or the hierarchy pane becomes visible,
	 * <code>updateHierarchyViewer<code> brings up the correct view and refreshes
	 * the current tree
	 */
	private void updateHierarchyViewer(final boolean doExpand) {
		if (fInputElement == null) {
			fPagebook.showPage(fNoHierarchyShownLabel);
		} else {
			if (getCurrentViewer().containsElements() != null) {
				Runnable runnable= new Runnable() {
					public void run() {
						getCurrentViewer().updateContent(doExpand); 
					}
				};
				BusyIndicator.showWhile(getDisplay(), runnable);
				if (!isChildVisible(fViewerbook, getCurrentViewer().getControl())) {
					setViewerVisibility(true);