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[HOLD] Components system example #5
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,13 @@ | ||
| import UIKit | ||
| import Components | ||
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| /// The root window for the app. Trait collection changes are fed into the Components system here. | ||
| final class RootWindow: UIWindow { | ||
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| override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) { | ||
| super.traitCollectionDidChange(previousTraitCollection) | ||
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| WKAppEnvironment.current.set(theme: traitCollection.userInterfaceStyle == .light ? WKTheme.light : WKTheme.dark, traitCollection: traitCollection) | ||
| } | ||
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,45 +1,18 @@ | ||
| import UIKit | ||
| import Components | ||
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| class SceneDelegate: UIResponder, UIWindowSceneDelegate { | ||
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| var window: UIWindow? | ||
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| var window: RootWindow? | ||
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| func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) { | ||
| // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`. | ||
| // If using a storyboard, the `window` property will automatically be initialized and attached to the scene. | ||
| // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead). | ||
| guard let _ = (scene as? UIWindowScene) else { return } | ||
| } | ||
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| func sceneDidDisconnect(_ scene: UIScene) { | ||
| // Called as the scene is being released by the system. | ||
| // This occurs shortly after the scene enters the background, or when its session is discarded. | ||
| // Release any resources associated with this scene that can be re-created the next time the scene connects. | ||
| // The scene may re-connect later, as its session was not necessarily discarded (see `application:didDiscardSceneSessions` instead). | ||
| } | ||
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| func sceneDidBecomeActive(_ scene: UIScene) { | ||
| // Called when the scene has moved from an inactive state to an active state. | ||
| // Use this method to restart any tasks that were paused (or not yet started) when the scene was inactive. | ||
| } | ||
| guard let windowScene = (scene as? UIWindowScene) else { return } | ||
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| func sceneWillResignActive(_ scene: UIScene) { | ||
| // Called when the scene will move from an active state to an inactive state. | ||
| // This may occur due to temporary interruptions (ex. an incoming phone call). | ||
| window = RootWindow(windowScene: windowScene) | ||
| window?.rootViewController = FeatureNavigationController() | ||
| window?.makeKeyAndVisible() | ||
| } | ||
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| func sceneWillEnterForeground(_ scene: UIScene) { | ||
| // Called as the scene transitions from the background to the foreground. | ||
| // Use this method to undo the changes made on entering the background. | ||
| } | ||
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| func sceneDidEnterBackground(_ scene: UIScene) { | ||
| // Called as the scene transitions from the foreground to the background. | ||
| // Use this method to save data, release shared resources, and store enough scene-specific state information | ||
| // to restore the scene back to its current state. | ||
| } | ||
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| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,13 +1,76 @@ | ||
| import UIKit | ||
| import SwiftUI | ||
| import Components | ||
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| class ViewController: UIViewController { | ||
| class FeatureNavigationController: WKCanvasViewController, WKFeatureNavigationHostingControllerDelegate { | ||
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| override func viewDidLoad() { | ||
| super.viewDidLoad() | ||
| print(Components().text) | ||
| } | ||
| override func viewDidLoad() { | ||
| super.viewDidLoad() | ||
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| let featureNavigationController = WKFeatureNavigationHostingController(delegate: self) | ||
| addComponent(featureNavigationController, pinToEdges: true, respectSafeArea: true) | ||
| } | ||
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| func featureNavigationUserDidTap(_ feature: WKFeature) { | ||
| switch feature { | ||
| case .buttons: | ||
| present(ButtonViewController(nibName: nil, bundle: nil), animated: true) | ||
| case .topRead: | ||
| present(TopReadController(), animated: true) | ||
| case .randomPhoto: | ||
| present(RandomPhotoController(), animated: true) | ||
| case .sayHello: | ||
| present(WKUICommunicationViewController(), animated: true) | ||
| } | ||
| } | ||
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| } | ||
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| /// Manually laying out `UIView`-based components on something that isn't a `WKCanvas`. The components react to environment changes but the base `UIView` does not. | ||
| class ButtonViewController: UIViewController { | ||
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| override func loadView() { | ||
| self.view = UIView() | ||
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| view.backgroundColor = .systemOrange | ||
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| let largeButton = WKButton(configuration: .large(text: "I'm a large button")) | ||
| let smallButton = WKButton(configuration: .small(text: "I'm a small button")) | ||
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| view.addSubview(largeButton) | ||
| view.addSubview(smallButton) | ||
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| NSLayoutConstraint.activate([ | ||
| largeButton.topAnchor.constraint(equalTo: view.topAnchor, constant: 55), | ||
| largeButton.leadingAnchor.constraint(equalTo: view.readableContentGuide.leadingAnchor), | ||
| largeButton.trailingAnchor.constraint(lessThanOrEqualTo: view.readableContentGuide.trailingAnchor), | ||
| smallButton.topAnchor.constraint(equalTo: largeButton.bottomAnchor, constant: 25), | ||
| smallButton.leadingAnchor.constraint(equalTo: largeButton.leadingAnchor), | ||
| smallButton.trailingAnchor.constraint(lessThanOrEqualTo: view.readableContentGuide.trailingAnchor) | ||
| ]) | ||
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| } | ||
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| } | ||
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| class TopReadController: WKCanvasViewController { | ||
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| override func viewDidLoad() { | ||
| super.viewDidLoad() | ||
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| let topReadController = WKTopReadHostingController(viewModel: WKTopReadViewModel(items: ["these", "are", "some", "top", "read", "items"])) | ||
| addComponent(topReadController, pinToEdges: true) | ||
| } | ||
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| } | ||
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| class RandomPhotoController: WKCanvasViewController { | ||
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| override func viewDidLoad() { | ||
| super.viewDidLoad() | ||
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| let randomPhotoController = WKRandomPhotoViewController(viewModel: WKRandomPhotoViewModel(configuration: .cats)) | ||
| addComponent(randomPhotoController, pinToEdges: true, respectSafeArea: true) | ||
| } | ||
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| } | ||
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52 changes: 52 additions & 0 deletions
52
Sources/Components/Components/Base/Component Base Classes/WKComponentHostingController.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| import SwiftUI | ||
| import Combine | ||
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| /// SwiftUI `View` via `UIHostingController` based Component | ||
| open class WKComponentHostingController<HostedView: View>: UIHostingController<HostedView> { | ||
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| // MARK: - Private Properties | ||
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| private var cancellables = Set<AnyCancellable>() | ||
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| // MARK: - Public Properties | ||
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| var appEnvironment: WKAppEnvironment { | ||
| return WKAppEnvironment.current | ||
| } | ||
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| var theme: WKTheme { | ||
| return WKAppEnvironment.current.theme | ||
| } | ||
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| // MARK: - Public | ||
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| public override init(rootView: HostedView) { | ||
| super.init(rootView: rootView) | ||
| subscribeToAppEnvironmentChanges() | ||
| } | ||
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| public override init?(coder aDecoder: NSCoder, rootView: HostedView) { | ||
| super.init(coder: aDecoder, rootView: rootView) | ||
| subscribeToAppEnvironmentChanges() | ||
| } | ||
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| public required init?(coder aDecoder: NSCoder) { | ||
| super.init(coder: aDecoder) | ||
| subscribeToAppEnvironmentChanges() | ||
| } | ||
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| // MARK: - WKAppEnvironment Subscription | ||
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| private func subscribeToAppEnvironmentChanges() { | ||
| WKAppEnvironment.publisher | ||
| .sink(receiveValue: { _ in self.appEnvironmentDidChange() }) | ||
| .store(in: &cancellables) | ||
| } | ||
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| // MARK: - Subclass Overrides | ||
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| public func appEnvironmentDidChange() { | ||
| // Subclasses should implement | ||
| } | ||
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| } |
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I may be missing a clear benefit, but for this simple example I would avoid the additional feature-specific view controller layer with
WKFeatureNavigationHostingControllerand instantiate it like: