ComponentDelegate is nil about spots HOT 3 OPEN

import UIKit
import Spots


enum KBComponentKind: String, StringConvertible {
  var string: String {
    return rawValue
  }
  
  case contactView
}


class ContactView: UIView {
  let titleLabel: UILabel = {
    let label = UILabel.init()
    label.textAlignment = .center
    label.textColor = .gray
    return label
  }()
  
  override init(frame: CGRect) {
    super.init(frame: frame)

    addSubview(titleLabel)
  }
  
  required init?(coder aDecoder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
  }
  
  override func layoutSubviews() {
    super.layoutSubviews()
    
    titleLabel.frame = frame
  }
}

extension ContactView: ItemConfigurable {
  func configure(with item: Item) {
    titleLabel.text = item.title
  }
  
  func computeSize(for item: Item, containerSize: CGSize) -> CGSize {
    return CGSize.init(width: containerSize.width,
                       height: 44)
  }
}


class Delegator: NSObject {}

extension Delegator: ComponentDelegate {
  func component(_ component: Component, itemSelected item: Item) {
    print(#function) // not called!!!
    print(component, item)
  }
  
  func component(_ component: Component, willDisplay view: ComponentView, item: Item) {
    print(#function) // called!
    if item.kind == KBComponentKind.contactView.rawValue {
      view.transform = CGAffineTransform.init(scaleX: 0.01, y: 0.01)
      view.alpha = 0
      UIView.animate(withDuration: 0.8, delay: 0.1, usingSpringWithDamping: 0.7, initialSpringVelocity: 0.3, options: [.curveEaseOut], animations: {
        view.alpha = 1
        view.transform = CGAffineTransform.identity
      }, completion: nil)
    }
  }
  
  func component(_ component: Component, didEndDisplaying view: ComponentView, item: Item) {
    print(#function) // called!
  }
}


@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

  var window: UIWindow?
  func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    let window = UIWindow.init(frame: UIScreen.main.bounds)
    self.window = window

    Configuration.shared.register(view: ContactView.self, identifier: KBComponentKind.contactView)
    Configuration.shared.registerDefault(view: ContactView.self)
    let model = ComponentModel.init(
      kind: .grid,
      layout: Layout.init(span: 3,
                          dynamicSpan: false,
                          dynamicHeight: false,
                          itemsPerRow: 3,
                          itemSpacing: 1,
                          lineSpacing: 1,
                          inset: Inset.init(padding: 12),
                          showEmptyComponent: false,
                          infiniteScrolling: false),
      items: [
        Item(title: "Sindre Moen", kind: "contactView"),
        Item(title: "Torgeir Øverland", kind: "contactView"),
        Item(title: "Francesco Rodriguez", kind: "contactView"),
        Item(title: "Henriette Røseth", kind: "contactView"),
        Item(title: "Peter Sergeev", kind: "contactView"),
        Item(title: "John Terje Sirevåg", kind: "contactView"),
        Item(title: "Chang Xiangzhong", kind: "contactView")
      ]
    )
    let component = Component.init(model: model)
    let controller = SpotsController.init(components: [component])
    let delegator = Delegator.init()
    controller.delegate = delegator

    window.rootViewController
    window.makeKeyAndVisible()

    return true
  }
}