wip

NavBarButtons.swift

protocol NavButtonProtocol: RawRepresentable {
    var title : String { get }
}


//extension NavButtonProtocol where Self : RawRepresentable, Self.RawValue == String {

//    static var count: Int {
//        var max: Int = 0
//        while let _ = self.init(rawValue: max) { max += 1 }
//        return max
//    }
//}


//extension NavButtonProtocol {

//    func performSegueWithIdentifier(_ segueIdentifier: SegueIdentifier, sender: Any?) {
//        performSegue(withIdentifier: segueIdentifier.rawValue, sender: sender)
//    }
//
//    func segueIdentifierForSegue(_ segue: UIStoryboardSegue) -> SegueIdentifier {
//
//        guard let identifier = segue.identifier, let segueIdentifier = SegueIdentifier(rawValue: identifier) else {
//            fatalError("Invalid segue identifier \(segue.identifier).")
//        }
//
//        return segueIdentifier
//    }
//}

protocol NavBarButtonDelegate: class {
    func navBarButtonTapped(button: NavButtonProtocol)
}

class NavBarButton : UIButton {
    var type: NavBarButton.RawValue?
}

class NavBarView : UIView {

    weak var delegate : NavBarButtonDelegate?

    func create(buttons: [NavButtonProtocol]) {
        // this is where you setup the buttons and add them to the view
        for button in buttons {
            let b = NavBarButton(frame: CGRect.zero)
            b.setTitle(button.title, for: UIControlState.normal)
            b.addTarget(self, action: #selector(buttonTapped), for: UIControlEvents.touchUpInside)
        }
    }

    @objc func buttonTapped(sender: Any) {
        guard let button = sender as? NavBarButton else {
            return
        }

        guard let type = button.type else {
            return
        }

        if let value = NavButtonProtocol(rawValue: type) {
            delegate?.navBarButtonTapped(button: value)

        }

//        delegate?.navBarButtonTapped(button: type)
    }
}

class SomeController : UIViewController, NavBarButtonDelegate {

    enum NavButtons : NavButtonProtocol {
        case first, second, third

        var title : String {
            switch self {
            case .first:
                return "First"
            case .second:
                return "Second"
            case .third:
                return "third"
            }
        }
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        let n = NavBarView()
        n.create(buttons: [NavButtons.first, NavButtons.second, NavButtons.third])
        n.delegate = self
    }

    // MARK: - NavBarButtonDelegate

    func navBarButtonTapped(button: NavButtonProtocol) {

    }

}