s4cha / Flow

Decouple your View Controllers with Flow Controllers [unmaintained]

Flow

Decouple your View Controllers with Flow Controllers

SignUpStep1VC.self --> SignUpStep2VC.self

• Decouples ViewControllers between them
• Leaves your View Controllers Clean
• Faster Compile times (less dependencies)

Declare your flow

Picture a Flow visually exactly like a Storyboard.

You have :

• An initialViewController where the flow starts.
• Links between ViewControllers A --> B.
• And Data that you can pass between them A -- onEvent(data) --> B(data)

A SignUp flow

class SignupFlow: Flow {

    override init() {
        super.init()
        initialViewController = SignUpStep1VC()

        register(
            SignUpStep1VC.self --> { SignUpStep2VC(user: $0) },
            SignUpStep2VC.self --> { SignUpStep3VC(user: $0) },
            SignUpStep3VC.self --> { SignUpStep4VC(user: $0) }
        )
    }
}

Here each View Controllers passes the User model around.

Start it !

func application(_ application: UIApplication, didFinishLaunchingWithOptions
                 launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    window = UIWindow(frame: UIScreen.main.bounds)
    window?.start(flow: SignupFlow()) // Start Flow!
    window?.makeKeyAndVisible()
    return true
}