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import UIKit
@objc(MWMWelcomePageControllerProtocol)
protocol WelcomePageControllerProtocol {
var view: UIView! { get set }
func addChildViewController(_ childController: UIViewController)
func closePageController(_ pageController: WelcomePageController)
}
@objc(MWMWelcomePageController)
final class WelcomePageController: UIPageViewController {
fileprivate var controllers: [UIViewController] = []
private var parentController: WelcomePageControllerProtocol!
private var iPadBackgroundView: SolidTouchView?
private var isAnimatingTransition = true
fileprivate var currentController: UIViewController! {
get {
return viewControllers?.first
}
set {
guard let controller = newValue else { return }
let animated = !isAnimatingTransition
setViewControllers([controller], direction: .forward, animated: animated) { [weak self] _ in
self?.isAnimatingTransition = false
}
isAnimatingTransition = animated
}
}
static func controller(parent: WelcomePageControllerProtocol) -> WelcomePageController? {
let isFirstSession = Alohalytics.isFirstSession()
let welcomeKey = isFirstSession ? FirstLaunchController.key : WhatsNewController.key
guard UserDefaults.standard.bool(forKey: welcomeKey) == false else { return nil }
let pagesCount = isFirstSession ? FirstLaunchController.pagesCount : WhatsNewController.pagesCount
let id = pagesCount == 1 ? "WelcomePageCurlController" : "WelcomePageScrollController"
let sb = UIStoryboard.instance(.Welcome)
let vc = sb.instantiateViewController(withIdentifier: id) as! WelcomePageController
vc.config(parent)
vc.show()
return vc
}
override func viewDidLoad() {
super.viewDidLoad()
let parentView = parentController.view!
view.backgroundColor = UIColor.white()
if IPAD() {
iPadBackgroundView = SolidTouchView(frame: parentView.bounds)
iPadBackgroundView!.backgroundColor = UIColor.fadeBackground()
iPadBackgroundView!.autoresizingMask = [.flexibleWidth, .flexibleHeight]
parentView.addSubview(iPadBackgroundView!)
view.layer.cornerRadius = 5
view.clipsToBounds = true
}
currentController = controllers.first
}
private func config(_ parent: WelcomePageControllerProtocol) {
parentController = parent
let isFirstSession = Alohalytics.isFirstSession()
let pagesCount = isFirstSession ? FirstLaunchController.pagesCount : WhatsNewController.pagesCount
let welcomeClass: WelcomeProtocolBase.Type = isFirstSession ? FirstLaunchController.self : WhatsNewController.self
(0..<pagesCount).forEach {
let vc = welcomeClass.controller($0)
(vc as! WelcomeProtocolBase).pageController = self
controllers.append(vc)
}
dataSource = self
}
func nextPage() {
let welcomeKey = Alohalytics.isFirstSession() ? FirstLaunchController.key : WhatsNewController.key
Statistics.logEvent(kStatEventName(kStatWhatsNew, welcomeKey),
withParameters: [kStatAction: kStatNext])
currentController = pageViewController(self, viewControllerAfter: currentController)
}
func close() {
UserDefaults.standard.set(true, forKey: FirstLaunchController.key)
UserDefaults.standard.set(true, forKey: WhatsNewController.key)
let welcomeKey = Alohalytics.isFirstSession() ? FirstLaunchController.key : WhatsNewController.key
Statistics.logEvent(kStatEventName(kStatWhatsNew, welcomeKey),
withParameters: [kStatAction: kStatClose])
iPadBackgroundView?.removeFromSuperview()
view.removeFromSuperview()
removeFromParentViewController()
parentController.closePageController(self)
}
func show() {
let welcomeKey = Alohalytics.isFirstSession() ? FirstLaunchController.key : WhatsNewController.key
Statistics.logEvent(kStatEventName(kStatWhatsNew, welcomeKey),
withParameters: [kStatAction: kStatOpen])
parentController.addChildViewController(self)
parentController.view.addSubview(view)
updateFrame()
}
private func updateFrame() {
let parentView = parentController.view!
view.frame = IPAD() ? CGRect(x: parentView.center.x - 260, y: parentView.center.y - 300, width: 520, height: 600) : CGRect(origin: CGPoint(), size: parentView.size)
(currentController as! WelcomeProtocolBase).updateSize()
}
override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
super.viewWillTransition(to: size, with: coordinator)
coordinator.animate(alongsideTransition: { [weak self] _ in self?.updateFrame() }, completion: nil)
}
}
extension WelcomePageController: UIPageViewControllerDataSource {
func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? {
guard viewController != controllers.first else { return nil }
let index = controllers.index(before: controllers.index(of: viewController)!)
return controllers[index]
}
func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? {
guard viewController != controllers.last else { return nil }
let index = controllers.index(after: controllers.index(of: viewController)!)
return controllers[index]
}
func presentationCount(for pageViewController: UIPageViewController) -> Int {
return controllers.count
}
func presentationIndex(for pageViewController: UIPageViewController) -> Int {
guard let vc = currentController else { return 0 }
return controllers.index(of: vc)!
}
}
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