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
if (page != null) {
			
			String newPerspective= page.getPerspective().getId();
			
			if (fCurrentPerspective == null || fCurrentPerspective != newPerspective) {
				fCurrentPerspective= newPerspective;
				if (IDebugUIConstants.ID_DEBUG_PERSPECTIVE.equals(fCurrentPerspective))
					fImplementations= new ITextHover[] { 
						new JavaDebugHover(fEditor) 
					};
				else
					fImplementations= new ITextHover[] {
						new JavaDebugHover(fEditor),
						new JavaTypeHover(fEditor)
					};
			}
		}
	}
			
	/*
	 * @see ITextHover#getHoverRegion(ITextViewer, int)
	 */
	public IRegion getHoverRegion(ITextViewer textViewer, int offset) {
		return getSubject(textViewer, offset);
	}
		
	/*
	 * @see ITextHover#getHoverInfo(ITextViewer, IRegion)
	 */
	public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) {