Add Simple Template Example

- Add a simple Template example that shows a user profile with avatar, displayName and presence.
- ScreenCoordinator: closure based with less protocols and delegates.
- Reducer: Reducer function that manages all state modifications.
- SwiftUI View: Decomposes UI into appropriate sub components.
- Uses Theme and Dependency Management Infrastructure

RiotSwiftUI/Modules/Template/SimpleProfileExample/View/TemplatePresenceView.swift

@@ -0,0 +1,59 @@
+// 
+// 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
+
+@available(iOS 14.0, *)
+struct TemplatePresenceView: View {
+    
+    let presense: TemplatePresence
+    
+    var foregroundColor: Color {
+        switch presense {
+        case .online:
+            return .green
+        case .idle:
+            return .orange
+        case .offline:
+            return .gray
+        }
+    }
+    
+    var body: some View {
+        HStack {
+            Image(systemName: "circle.fill")
+                .resizable()
+                .frame(width: 8, height: 8)
+                .foregroundColor(foregroundColor)
+            Text(presense.title)
+                .font(.subheadline)
+        }
+        .foregroundColor(foregroundColor)
+        .padding(0)
+    }
+}
+
+@available(iOS 14.0, *)
+struct TemplatePresenceView_Previews: PreviewProvider {
+    static var previews: some View {
+        VStack(alignment:.leading){
+            Text("Presence")
+            ForEach(TemplatePresence.allCases) { presence in
+                TemplatePresenceView(presense: presence)
+            }
+        }
+    }
+}

RiotSwiftUI/Modules/Template/SimpleProfileExample/View/TemplateUserProfile.swift

@@ -19,32 +19,61 @@ import SwiftUI
 @available(iOS 14.0, *)
 struct TemplateUserProfile: View {
     
+    enum Result {
+        case cancel
+        case done
+    }
+    
+    typealias Completion = (Result) -> Void
+    
+    @Environment(\.theme) var theme: ThemeSwiftUI
     @ObservedObject var viewModel: TemplateUserProfileViewModel
     
-    var header: some View {
+    var completion: Completion
+    
+    var leftButton: some View {
+        Button(VectorL10n.cancel) {
+            completion(.cancel)
+        }
+    }
+    
+    var rightButton: some View {
+        Button(VectorL10n.done) {
+            completion(.done)
+        }
+    }
+    
+    var body: some View {
         VStack {
-            if let avatar = viewModel.viewState.avatar {
-                HStack{
+            TemplateUserProfileHeader(
+                avatar: viewModel.viewState.avatar,
+                displayName: viewModel.viewState.displayName,
+                presence: viewModel.viewState.presence
+            )
+            Divider()
+            VStack{
+                HStack(alignment: .center){
                     Spacer()
-                    AvatarImage(avatarData: avatar, size: .xxLarge)
+                    Text("More great user content!")
+                        .font(theme.fonts.title2)
+                        .foregroundColor(theme.colors.secondaryContent)
                     Spacer()
                 }
             }
-            Text(viewModel.viewState.displayName ?? "")
-        }
-
-    }
-    var body: some View {
-        VectorForm {
-            header
+            .frame(maxHeight: .infinity)
         }
+        .frame(maxHeight: .infinity)
+        .navigationTitle(viewModel.viewState.displayName ?? "")
+        .navigationBarItems(leading: leftButton, trailing: rightButton)
     }
 }
 
 @available(iOS 14.0, *)
 struct TemplateUserProfile_Previews: PreviewProvider {
     static var previews: some View {
-        TemplateUserProfile(viewModel: TemplateUserProfileViewModel(userService: TemplateMockUserService.example))
-            .addDependency(MockAvatarService.example)
+        TemplateUserProfile(viewModel: TemplateUserProfileViewModel(userService: MockTemplateUserService.example)) { _ in
+            
+        }
+        .addDependency(MockAvatarService.example)
     }
 }

RiotSwiftUI/Modules/Template/SimpleProfileExample/View/TemplateUserProfileHeader.swift

@@ -0,0 +1,52 @@
+// 
+// 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
+
+@available(iOS 14.0, *)
+struct TemplateUserProfileHeader: View {
+    
+    @Environment(\.theme) var theme: ThemeSwiftUI
+    let avatar: AvatarInputType?
+    let displayName: String?
+    let presence: TemplatePresence
+    
+    var body: some View {
+        VStack {
+            if let avatar = avatar {
+                HStack{
+                    Spacer()
+                    AvatarImage(avatarData: avatar, size: .xxLarge)
+                    Spacer()
+                }
+                .padding(.vertical)
+            }
+            VStack(spacing: 8){
+                Text(displayName ?? "")
+                    .font(theme.fonts.title3)
+                TemplatePresenceView(presense: presence)
+            }
+        }
+    }
+}
+
+@available(iOS 14.0, *)
+struct TemplateUserProfileHeader_Previews: PreviewProvider {
+    static var previews: some View {
+        TemplateUserProfileHeader(avatar: MockAvatarInput.example, displayName: "Alice", presence: .online)
+            .addDependency(MockAvatarService.example)
+    }
+}