#40: Add server selection screen from EI.

2026-11-03 06:55:59 +00:00 · 2022-06-30 10:49:00 +01:00
parent dd739d4766
commit baeffd2121
32 changed files with 710 additions and 40 deletions
@@ -0,0 +1,123 @@
+// 
+// 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
+
+struct ServerSelectionScreen: View {
+
+    // MARK: - Properties
+    
+    // MARK: Private
+    
+    @FocusState var isTextFieldFocused: Bool
+    
+    // MARK: Public
+    
+    @ObservedObject var context: ServerSelectionViewModel.Context
+    
+    // MARK: Views
+    
+    var body: some View {
+        ScrollView {
+            VStack(spacing: 0) {
+                header
+                    .padding(.top, UIConstants.topPaddingToNavigationBar)
+                    .padding(.bottom, 36)
+                
+                serverForm
+            }
+            .readableFrame()
+            .padding(.horizontal, 16)
+        }
+        .background(Color.element.background, ignoresSafeAreaEdges: .all)
+        .toolbar { toolbar }
+        .alert(item: $context.alertInfo) { $0.alert }
+    }
+    
+    /// The title, message and icon at the top of the screen.
+    var header: some View {
+        VStack(spacing: 8) {
+            AuthenticationIconImage(image: Asset.Images.serverSelectionIcon)
+                .padding(.bottom, 8)
+            
+            Text(ElementL10n.serverSelectionTitle)
+                .font(.element.title2B)
+                .multilineTextAlignment(.center)
+                .foregroundColor(.element.primaryContent)
+            
+            Text(ElementL10n.serverSelectionMessage)
+                .font(.element.body)
+                .multilineTextAlignment(.center)
+                .foregroundColor(.element.secondaryContent)
+        }
+    }
+    
+    /// The text field and confirm button where the user enters a server URL.
+    var serverForm: some View {
+        VStack(alignment: .leading, spacing: 12) {
+            TextField(ElementL10n.serverSelectionServerUrl, text: $context.homeserverAddress)
+                .focused($isTextFieldFocused)
+                .textFieldStyle(.elementInput(footerText: context.viewState.footerMessage,
+                                              isError: context.viewState.isShowingFooterError))
+                .keyboardType(.URL)
+                .autocapitalization(.none)
+                .disableAutocorrection(true)
+                .onChange(of: context.homeserverAddress) { _ in context.send(viewAction: .clearFooterError) }
+                .submitLabel(.done)
+                .onSubmit(submit)
+                .accessibilityIdentifier("addressTextField")
+            
+            Button(action: submit) {
+                Text(context.viewState.buttonTitle)
+            }
+            .buttonStyle(.elementAction(.xLarge))
+            .disabled(context.viewState.hasValidationError)
+            .accessibilityIdentifier("confirmButton")
+        }
+    }
+    
+    @ToolbarContentBuilder
+    var toolbar: some ToolbarContent {
+        ToolbarItem(placement: .cancellationAction) {
+            if context.viewState.hasModalPresentation {
+                Button { context.send(viewAction: .dismiss) } label: {
+                    Text(ElementL10n.actionCancel)
+                }
+                .accessibilityIdentifier("dismissButton")
+            }
+        }
+    }
+    
+    /// Sends the `confirm` view action so long as the text field input is valid.
+    func submit() {
+        guard !context.viewState.hasValidationError else { return }
+        context.send(viewAction: .confirm)
+    }
+}
+
+// MARK: - Previews
+
+struct ServerSelection_Previews: PreviewProvider {
+    static var previews: some View {
+        ForEach(MockServerSelectionScreenState.allCases, id: \.self) { state in
+            NavigationView {
+                ServerSelectionScreen(context: state.viewModel.context)
+                    .tint(.element.accent)
+            }
+            .navigationViewStyle(.stack)
+        }
+    }
+}