Top-aligning UIImageView with delayed load

UIImageViewWithDelayedLoad.swift

class UIImageViewWithDelayedLoad : UIImageView {
    var url : NSURL?

    init(urlForLoadWhenFrameNotZero: NSURL) {
        super.init(frame: CGRectZero)
        self.url = urlForLoadWhenFrameNotZero
    }
    
    required init?(coder: NSCoder) { super.init(coder: coder) }
    
    override var image: UIImage? {
        didSet {
            self.sizeToFit()
        }
    }
    
    override func layoutSubviews() {
        super.layoutSubviews()
        
        guard let url = url else { return }
        guard (frame.size.width > 0 && frame.size.height > 0) else { return }
        self.hnk_setImageFromURL(url)
        self.url = nil
    }
}

This is for Haneke, requires Haneke and handles this issue in Haneke