142 lines
4.9 KiB
Swift
142 lines
4.9 KiB
Swift
//
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// Copyright 2021-2024 New Vector Ltd.
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//
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// SPDX-License-Identifier: AGPL-3.0-only
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// Please see LICENSE in the repository root for full details.
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//
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import SwiftUI
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struct AuthenticationServerSelectionScreen: View {
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// MARK: - Properties
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// MARK: Private
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@Environment(\.theme) private var theme
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@State private var isEditingTextField = false
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private var textFieldFooterColor: Color {
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viewModel.viewState.hasValidationError ? theme.colors.alert : theme.colors.tertiaryContent
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}
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// MARK: Public
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@ObservedObject var viewModel: AuthenticationServerSelectionViewModel.Context
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// MARK: Views
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var body: some View {
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GeometryReader { _ in
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ScrollView {
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VStack(spacing: 0) {
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header
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.padding(.top, OnboardingMetrics.topPaddingToNavigationBar)
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.padding(.bottom, 36)
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serverForm
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}
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.readableFrame()
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.padding(.horizontal, 16)
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}
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}
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.background(theme.colors.background.ignoresSafeArea())
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.toolbar { toolbar }
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.alert(item: $viewModel.alertInfo) { $0.alert }
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.accentColor(theme.colors.accent)
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}
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/// The title, message and icon at the top of the screen.
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var header: some View {
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VStack(spacing: 8) {
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OnboardingIconImage(image: Asset.Images.authenticationServerSelectionIcon)
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.padding(.bottom, 8)
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Text(viewModel.viewState.headerTitle)
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.font(theme.fonts.title2B)
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.multilineTextAlignment(.center)
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.foregroundColor(theme.colors.primaryContent)
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.accessibilityIdentifier("headerTitle")
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Text(viewModel.viewState.headerMessage)
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.font(theme.fonts.body)
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.multilineTextAlignment(.center)
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.foregroundColor(theme.colors.secondaryContent)
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.accessibilityIdentifier("headerMessage")
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}
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}
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/// The text field and confirm button where the user enters a server URL.
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var serverForm: some View {
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VStack(alignment: .leading, spacing: 12) {
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VStack(spacing: 8) {
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if #available(iOS 15.0, *) {
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textField
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.onSubmit(submit)
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} else {
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textField
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}
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if let errorMessage = viewModel.viewState.footerErrorMessage {
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Text(errorMessage)
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.font(theme.fonts.footnote)
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.foregroundColor(textFieldFooterColor)
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.frame(maxWidth: .infinity, alignment: .leading)
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.accessibilityIdentifier("textFieldFooter")
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}
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}
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Button(action: submit) {
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Text(viewModel.viewState.buttonTitle)
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}
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.buttonStyle(PrimaryActionButtonStyle())
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.disabled(viewModel.viewState.hasValidationError)
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.accessibilityIdentifier("confirmButton")
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}
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}
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/// The text field, extracted for iOS 15 modifiers to be applied.
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var textField: some View {
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TextField(VectorL10n.authenticationServerSelectionServerUrl, text: $viewModel.homeserverAddress) {
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isEditingTextField = $0
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}
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.keyboardType(.URL)
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.autocapitalization(.none)
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.disableAutocorrection(true)
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.textFieldStyle(BorderedInputFieldStyle(isEditing: isEditingTextField,
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isError: viewModel.viewState.isShowingFooterError))
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.onChange(of: viewModel.homeserverAddress) { _ in viewModel.send(viewAction: .clearFooterError) }
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.accessibilityIdentifier("addressTextField")
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}
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@ToolbarContentBuilder
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var toolbar: some ToolbarContent {
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ToolbarItem(placement: .cancellationAction) {
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if viewModel.viewState.hasModalPresentation {
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Button { viewModel.send(viewAction: .dismiss) } label: {
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Text(VectorL10n.cancel)
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}
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.accessibilityLabel(VectorL10n.cancel)
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.accessibilityIdentifier("dismissButton")
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}
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}
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}
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/// Sends the `confirm` view action so long as the text field input is valid.
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func submit() {
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guard !viewModel.viewState.hasValidationError else { return }
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viewModel.send(viewAction: .confirm)
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}
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}
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// MARK: - Previews
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@available(iOS 15.0, *)
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struct AuthenticationServerSelection_Previews: PreviewProvider {
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static let stateRenderer = MockAuthenticationServerSelectionScreenState.stateRenderer
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static var previews: some View {
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stateRenderer.screenGroup(addNavigation: true)
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.navigationViewStyle(.stack)
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}
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}
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