let notepad = Notepad(frame: view.bounds, themeFile: "one-dark")
view.addSubview(notepad)

class ViewController: UIViewController {
    var textView: UITextView!
    
    override func viewDidLoad() {
        super.viewDidLoad()

        let containerSize = CGSize(width: self.view.bounds.width, height: CGFloat.greatestFiniteMagnitude)
        let container = NSTextContainer(size: containerSize)
        container.widthTracksTextView = true

        let layoutManager = NSLayoutManager()
        layoutManager.addTextContainer(container)

        let storage = Storage()
        let theme = Theme("one-dark")
        storage.theme = theme
        storage.addLayoutManager(layoutManager)

        let editor = UITextView(frame: self.view.bounds, textContainer: container)
        editor.backgroundColor = theme.backgroundColor
        editor.tintColor = theme.tintColor
        editor.autoresizingMask = [.flexibleWidth, .flexibleHeight]
    }
}

class ViewController: NSViewController {
    @IBOutlet var textView: NSTextView!
    let storage = Storage()

    override func viewDidLoad() {
        super.viewDidLoad()

        let theme = Theme("one-dark")
        storage.theme = theme
        textView.backgroundColor = theme.backgroundColor
        textView.insertionPointColor = theme.tintColor
        textView.layoutManager?.replaceTextStorage(storage)
    }
}