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/javaeditor/CompilationUnitEditor.java
setAction("Format", new TextOperationAction(JavaEditorMessages.getResourceBundle(), "Format.", this, ISourceViewer.FORMAT)); 
		
		setAction("AddBreakpoint", new AddBreakpointAction(this)); 
		setAction("ManageBreakpoints", new BreakpointRulerAction(getVerticalRuler(), this)); 
		
		setAction(ITextEditorActionConstants.RULER_DOUBLE_CLICK, getAction("ManageBreakpoints"));		 
	}
	
	/*
	 * @see JavaEditor#getElementAt
	 */
	protected IJavaElement getElementAt(int offset) {
		IWorkingCopyManager manager= JavaPlugin.getDefault().getWorkingCopyManager();
		ICompilationUnit unit= manager.getWorkingCopy(getEditorInput());
		
		if (unit != null) {
			synchronized (unit) {
				try {
					unit.reconcile();
					return unit.getElementAt(offset);
				} catch (JavaModelException x) {
				}
			}
		}
		
		return null;
	}
	
	/*
	 * @see JavaEditor#getCorrespondingElement(IJavaElement)