Add the Use Case selection screen to the onboarding flow.

RiotSwiftUI/Modules/Onboarding/UseCase/Coordinator/OnboardingUseCaseCoordinator.swift

@@ -0,0 +1,60 @@
+//
+// Copyright 2021 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import SwiftUI
+
+final class OnboardingUseCaseCoordinator: Coordinator, Presentable {
+    
+    // MARK: - Properties
+    
+    // MARK: Private
+    
+    private let onboardingUseCaseHostingController: UIViewController
+    private var onboardingUseCaseViewModel: OnboardingUseCaseViewModelProtocol
+    
+    // MARK: Public
+
+    // Must be used only internally
+    var childCoordinators: [Coordinator] = []
+    var completion: ((OnboardingUseCaseViewModelResult) -> Void)?
+    
+    // MARK: - Setup
+    
+    @available(iOS 14.0, *)
+    init() {
+        let viewModel = OnboardingUseCaseViewModel()
+        let view = OnboardingUseCase(viewModel: viewModel.context)
+        onboardingUseCaseViewModel = viewModel
+        
+        let hostingController = VectorHostingController(rootView: view)
+        hostingController.vc_removeBackTitle()
+        onboardingUseCaseHostingController = hostingController
+    }
+    
+    // MARK: - Public
+    func start() {
+        MXLog.debug("[OnboardingUseCaseCoordinator] did start.")
+        onboardingUseCaseViewModel.completion = { [weak self] result in
+            MXLog.debug("[OnboardingUseCaseCoordinator] OnboardingUseCaseViewModel did complete with result: \(result).")
+            guard let self = self else { return }
+            self.completion?(result)
+        }
+    }
+    
+    func toPresentable() -> UIViewController {
+        return self.onboardingUseCaseHostingController
+    }
+}