Bug 32384 Cannot open type hierarchy after a cancel
JUnit setup 1) open the type hierarchy on TestCase 2) press F4 on Object 3) cancel in progress bar 4) press F4 on Object again ->nothing happens
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
private IType fSelectedType;
	
	private IJavaElement fInputElement;
	
	
	private ArrayList fInputHistory;
	
	private IMemento fMemento;
	private IDialogSettings fDialogSettings;
	
	private TypeHierarchyLifeCycle fHierarchyLifeCycle;
	private ITypeHierarchyLifeCycleListener fTypeHierarchyLifeCycleListener;
	
	private IPropertyChangeListener fPropertyChangeListener;
		
	private SelectionProviderMediator fSelectionProviderMediator;
	private ISelectionChangedListener fSelectionChangedListener;
	private IPartListener2 fPartListener;
	private int fCurrentOrientation;
	private boolean fLinkingEnabled;
	
	private boolean fIsVisible;
	private boolean fNeedRefresh;	
	private boolean fIsEnableMemberFilter;
	
	private int fCurrentViewerIndex;
	private TypeHierarchyViewer[] fAllViewers;
	
	private MethodsViewer fMethodsViewer;