Bug 6754 Hierarchy does not show selection on F4
Build 20011206 - opened hierarchy on org.eclipse.jface.dialogs.MessageDialog - selected Dialog superclass and hit F4 - the resulting hierarchy was scrolled to the end, with the selection (Dialog) not visible
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
private static final String DIALOGSTORE_VIEWORIENTATION= "TypeHierarchyViewPart.orientation";	 
	private static final String TAG_INPUT= "input"; 
	private static final String TAG_VIEW= "view"; 
	private static final String TAG_ORIENTATION= "orientation"; 
	private static final String TAG_RATIO= "ratio"; 
	private static final String TAG_SELECTION= "selection"; 
	private static final String TAG_VERTICAL_SCROLL= "vertical_scroll"; 
	
	private IType fSelectedType;
	
	private IJavaElement fInputElement;
	
	
	private ArrayList fInputHistory;
	
	private IMemento fMemento;
	
	private IProblemChangedListener fHierarchyProblemListener;
	
	private TypeHierarchyLifeCycle fHierarchyLifeCycle;
	private ITypeHierarchyLifeCycleListener fTypeHierarchyLifeCycleListener;
		
	private MethodsViewer fMethodsViewer;
			
	private int fCurrentViewerIndex;
	private TypeHierarchyViewer[] fAllViewers;
	
	private SelectionProviderMediator fSelectionProviderMediator;
	private ISelectionChangedListener fSelectionChangedListener;