case basic

case selfSizing

case calendar

case sizeDelegate

case images

case icons

case storyboard

case navigationBar

case largeTitles

case scroll

case header

case multipleCells

case pageViewController

var title: String {

switch self {

case .basic:

return "Basic"

case .selfSizing:

return "Self sizing cells"

case .calendar:

return "Calendar"

case .sizeDelegate:

return "Size delegate"

case .images:

return "Images"

case .icons:

return "Icons"

case .storyboard:

return "Storyboard"

case .navigationBar:

return "Navigation bar"

case .largeTitles:

return "Large titles"

case .scroll:

return "Hide menu on scroll"

case .header:

return "Header above menu"

case .multipleCells:

return "Multiple cells"

case .pageViewController:

return "PageViewController"

}

}

static let CellIdentifier = "CellIdentifier"

var isUITesting: Bool {

return ProcessInfo.processInfo.arguments.contains("--ui-testing")

}

override func viewDidLoad() {

super.viewDidLoad()

tableView.register(UITableViewCell.self, forCellReuseIdentifier: Self.CellIdentifier)

if isUITesting {

let viewController = createViewController(for: .basic)

navigationController?.setViewControllers([viewController], animated: false)

}

}

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

let cell = tableView.dequeueReusableCell(withIdentifier: Self.CellIdentifier, for: indexPath)

let example = Example.allCases[indexPath.row]

cell.textLabel?.text = example.title

return cell

}

override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

return Example.allCases.count

}

override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {

let example = Example.allCases[indexPath.row]

let viewController = createViewController(for: example)

viewController.title = example.title

switch example {

case .largeTitles:

let navigationController = UINavigationController(rootViewController: viewController)

navigationController.modalPresentationStyle = .fullScreen

viewController.navigationItem.rightBarButtonItem = UIBarButtonItem(

barButtonSystemItem: .done,

target: self,

action: #selector(handleDismiss))

present(navigationController, animated: true)

default:

viewController.view.backgroundColor = .white

navigationController?.pushViewController(viewController, animated: true)

}

}

private func createViewController(for example: Example) -> UIViewController {

switch example {

case .basic:

return BasicViewController(nibName: nil, bundle: nil)

case .calendar:

return CalendarViewController(nibName: nil, bundle: nil)

case .selfSizing:

return SelfSizingViewController()

case .sizeDelegate:

return SizeDelegateViewController(nibName: nil, bundle: nil)

case .images:

return UnsplashViewController(nibName: nil, bundle: nil)

case .icons:

return IconsViewController(nibName: nil, bundle: nil)

case .storyboard:

return StoryboardViewController(nibName: nil, bundle: nil)

case .navigationBar:

return NavigationBarViewController(nibName: nil, bundle: nil)

case .largeTitles:

return LargeTitlesViewController(nibName: nil, bundle: nil)

case .scroll:

return ScrollViewController(nibName: nil, bundle: nil)

case .header:

return HeaderViewController(nibName: nil, bundle: nil)

case .multipleCells:

return MultipleCellsViewController(nibName: nil, bundle: nil)

case .pageViewController:

return PageViewExampleViewController(nibName: nil, bundle: nil)

}

}

@objc private func handleDismiss() {

dismiss(animated: true)

}