fBindingService= null;
	public void widgetDisposed(DisposeEvent event) {		fTreeViewer= null;		fFilterText= null;		// Remove handler submission		PlatformUI.getWorkbench().getCommandSupport().removeHandlerSubmission(fShowViewMenuHandlerSubmission);		// Restore editor's key binding scope		if (fKeyBindingScopes != null && fKeyBindingService != null) {			fKeyBindingService.setScopes(fKeyBindingScopes);			fKeyBindingScopes= null;			fKeyBindingService= null;		}				fBindingService= null;	}