if (fCurrentPerspective == null || fCurrentPerspective != newPerspective) { fCurrentPerspective= newPerspective;  installTextHovers();
if (fCurrentPerspectiveId == null || fCurrentPerspectiveId != perspectiveId) { fCurrentPerspectiveId= perspectiveId;  installTextHovers(); }
	protected void update() {				IWorkbenchWindow window= fEditor.getSite().getWorkbenchWindow();		IWorkbenchPage page= window.getActivePage();		if (page != null) {						String newPerspective= page.getPerspective().getId();						if (fCurrentPerspective == null || fCurrentPerspective != newPerspective) {				fCurrentPerspective= newPerspective;								installTextHovers();								}		}	}