SimpleContextMenu.swift

//
//  Simple Context Menu Playground
//  fivestars.blog
//
//  Created by Federico Zanetello on 20/6/19.
//

import UIKit
import PlaygroundSupport

final class MyViewController: UIViewController,
                               UIContextMenuInteractionDelegate {
  override func loadView() {
    let view = UIView()
    view.backgroundColor = .black

    let interactionView = UIView()
    interactionView.backgroundColor = .systemYellow
    interactionView.translatesAutoresizingMaskIntoConstraints = false

    let interaction = UIContextMenuInteraction(delegate: self)
    interactionView.addInteraction(interaction)
    print("interaction added")

    view.addSubview(interactionView)

    NSLayoutConstraint.activate([
      interactionView.centerXAnchor.constraint(equalTo: view.centerXAnchor),
      interactionView.centerYAnchor.constraint(equalTo: view.centerYAnchor),
      interactionView.heightAnchor.constraint(equalTo: interactionView.widthAnchor),
      interactionView.heightAnchor.constraint(equalToConstant: 150)
      ])

    self.view = view
  }

  // MARK: UIContextMenuInteractionDelegate

  func contextMenuInteraction(
    _ interaction: UIContextMenuInteraction,
    configurationForMenuAtLocation location: CGPoint) -> UIContextMenuConfiguration? {
    print("configurationForMenuAtLocation")

    return UIContextMenuConfiguration(identifier: nil,
                                      previewProvider: nil,
                                      actionProvider: { [weak self] _ in
      return self?.makeContextMenu()
    })
  }

  private func makeContextMenu() -> UIMenu {
    let blog = UIAction(__title: "fivestars.blog",
                         image: UIImage(systemName: "star.fill")) { _ in
                          print("https://fivestars.blog")
    }

    let twitter = UIAction(__title: "Federico Zanetello",
                           image: UIImage(systemName: "at")) { _ in
                            print("https://twitter.com/zntfdr")
    }

    return UIMenu(__title: "",
                  image: nil,
                  identifier: nil,
                  children: [blog, twitter])
  }

  func contextMenuInteraction(
    _ interaction: UIContextMenuInteraction,
    previewForHighlightingMenuWith configuration: UIContextMenuConfiguration)
    -> UITargetedPreview? {
    print("previewForHighlightingMenuWith")
    return nil
  }

  func contextMenuInteraction(
    _ interaction: UIContextMenuInteraction,
    previewForDismissingMenuWith configuration: UIContextMenuConfiguration)
    -> UITargetedPreview? {
    print("previewForDismissingMenuWith")
    return nil
  }

  func contextMenuInteraction(
    _ interaction: UIContextMenuInteraction,
    willCommitWithAnimator animator: UIContextMenuInteractionCommitAnimating) {
    print("willCommitWithAnimator")
  }

  func contextMenuInteractionWillPresent(
    _ interaction: UIContextMenuInteraction) {
    print("willPresent")
  }

  func contextMenuInteractionDidEnd(
    _ interaction: UIContextMenuInteraction) {
    print("didEnd")
  }
}

PlaygroundPage.current.liveView = MyViewController()
PlaygroundPage.current.needsIndefiniteExecution = true