Lightweight Dependency Injection tips

Transcript

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18. ೉͍͜͠ͱ͸͍ͯ͠ͳͯ͘ɺ
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19. protocol DependencyInjectable { associatedtype Dependency static func make(withDependency dependency: Dependency)

    -> Self }

20. ࢖͍ํ
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21. final class WebViewController: UIViewController, DependencyInjectable { private var url: URL!

    typealias Dependency = URL static func make(withDependency dependency: Dependency) -> WebViewController { let vc = WebViewController.instantiateInitialViewController(with: "WebViewController") vc.url = dependency return vc } } ґଘ͢ΔΦϒδΣΫτͷఆٛ

22. final class WebViewController: UIViewController, DependencyInjectable { private var url: URL!

    typealias Dependency = URL static func make(withDependency dependency: Dependency) -> WebViewController { let vc = WebViewController.instantiateInitialViewController(with: "WebViewController") vc.url = dependency return vc } } %*ͳ7JFX$POUSPMMFSͷΠϯελϯε͸ɺ
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23. 4FHVFͷ৔߹

24. override func prepare(for segue: UIStoryboardSegue, sender: Any?) { switch segue.destination

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25. final class WebViewController: UIViewController, DependencyInjectable { private var url: URL!

    typealias Dependency = URL static func make(withDependency dependency: Dependency) -> WebViewController { let vc = WebViewController.instantiateInitialViewController(with: "WebViewController") vc.url = dependency return vc } }  VSMΛQSJWBUFʹͰ͖Δ
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26. final class WebViewController: UIViewController, DependencyInjectable { private var url: URL!

    typealias Dependency = URL static func make(withDependency dependency: Dependency) -> WebViewController { let vc = WebViewController.instantiateInitialViewController(with: "WebViewController") vc.url = dependency return vc } } ͜Ε͚ͩݟΔͱ4FHVFͷํ͕ศརʹݟ͑Δ͕ɺ΋ͬͱෳࡶͳґଘੑ Λ஫ೖ͢Δඞཁ͕Ͱ͖ͨ৔߹ʹɺ4FHVFΛ࢖ͬͨํࣜ͸͔ͳΓ໘౗ ͳ͜ͱʹͳΔ

27. final class WebViewController: UIViewController, DependencyInjectable { private var url: URL!

    private var customUserAgent: String? struct Dependency { let url: URL let customUserAgent: String? } static func make(withDependency dependency: Dependency) -> WebViewController { let vc = WebViewController.instantiateInitialViewController(with: "WebViewController") vc.url = dependency.url vc.customUserAgent = dependency.customUserAgent return vc } } ྫͱͯ͠͸ɺ8FC7JFXʹઃఆ͢ΔDVTUPN6TF"HFOUΛมߋ͢Δඞཁ ͕͋Δ৔߹ɺ͜ͷΑ͏ʹ%FQFOEFODZ
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29. let vc = WebViewController.make(withDependency: url) navigationController?.pushViewController(vc, animated: true)

30. let vc = WebViewController.make(withDependency: url) navigationController?.pushViewController(vc, animated: true)

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32. extension UIViewController { func present<DI: DependencyInjectable>(viewControllerType: DI.Type, dependency: DI.Dependency, withNavigationType

    navigationType: UINavigationController.Type? = nil, animated: Bool = true, completion: (() -> Swift.Void)? = nil) where DI: UIViewController { let vc = viewControllerType.make(withDependency: dependency) if let navigationType = navigationType { let nav = navigationType.init(rootViewController: vc) present(nav, animated: animated, completion: completion) } else { present(vc, animated: animated, completion: completion) } } func push<DI: DependencyInjectable>(viewControllerType: DI.Type, dependency: DI.Dependency, animated: Bool = true) where DI: UIViewController { let vc = viewControllerType.make(withDependency: dependency) navigationController?.pushViewController(vc, animated: animated) } } %FQFOEFODZ*OKFDUBCMFΛ࢖ͬͯભҠ࣌ͷίʔυΛந৅Խ

33. push(viewControllerType: WebViewController.self, dependency: url) present(viewControllerType: WebViewController.self, dependency: url, withNavigationType: CustomNavigationController.self)

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34. push(viewControllerType: WebViewController.self, dependency: url) present(viewControllerType: WebViewController.self, dependency: url, withNavigationType: CustomNavigationController.self)

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