Bug 4369 F2 should work even if "Hide Text Hover" is enabled
- enable "Hide Text Hover" - position the cursor on a type - press F2 observe: nothing happens although I explicitly requested JavaDoc help.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/java/hover/JavaTextHover.java
protected ITextHover[] fImplementations;
	protected boolean fEnabled;
	
	
	
	public JavaTextHover(IEditorPart editor) {
		
		fEditor= editor;
		
		if (fEditor != null) {
			
			fPartListener= new EditorWatcher();
			IWorkbenchWindow window= fEditor.getSite().getWorkbenchWindow();
			window.getPartService().addPartListener(fPartListener);
			
			fPropertyChangeListener= new PropertyChangeListener();
			IPreferenceStore store= JavaPlugin.getDefault().getPreferenceStore();
			store.addPropertyChangeListener(fPropertyChangeListener);
			fEnabled= store.getBoolean(IPreferencesConstants.EDITOR_SHOW_HOVER);
			
			update();
		}
		
		
	}
	
	protected void update() {
		
		IWorkbenchWindow window= fEditor.getSite().getWorkbenchWindow();
		IWorkbenchPage page= window.getActivePage();