         return longPress
     }()
 
-    struct Notification {
-
-        static let photoImageUpdated = "PhotoViewControllerPhotoImageUpdatedNotification"
-    }
-
     deinit {
         scalingImageView.delegate = nil
 


    override func viewDidLoad() {
        super.viewDidLoad()

        NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(photoImageUpdated(_:)), name: Notification.photoImageUpdated, object: nil)

        scalingImageView.frame = view.bounds
        scalingImageView.imageType = photo.imageType

    }

    // MARK: Selectors

    @objc private func didDoubleTap(sender: UITapGestureRecognizer) {

