675 lines
27 KiB
Swift
675 lines
27 KiB
Swift
//
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// MainTabBarController.swift
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// Mastodon
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//
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// Created by Cirno MainasuK on 2021-1-27.
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//
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import UIKit
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import Combine
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import CoreDataStack
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import SafariServices
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import MastodonAsset
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import MastodonCore
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import MastodonLocalization
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import MastodonUI
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class MainTabBarController: UITabBarController {
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public var disposeBag = Set<AnyCancellable>()
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weak var context: AppContext!
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weak var coordinator: SceneCoordinator!
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var authContext: AuthContext?
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private let largeContentViewerInteraction = UILargeContentViewerInteraction()
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static let avatarButtonSize = CGSize(width: 25, height: 25)
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let avatarButton = CircleAvatarButton()
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let accountSwitcherChevron = UIImageView(
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image: .chevronUpChevronDown?.withConfiguration(
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UIImage.SymbolConfiguration(weight: .bold)
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)
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)
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@Published var currentTab: Tab = .home
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enum Tab: Int, CaseIterable {
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case home
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case search
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case compose
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case notifications
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case me
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var tag: Int {
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return rawValue
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}
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var title: String {
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switch self {
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case .home: return L10n.Common.Controls.Tabs.home
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case .search: return L10n.Common.Controls.Tabs.searchAndExplore
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case .compose: return L10n.Common.Controls.Actions.compose
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case .notifications: return L10n.Common.Controls.Tabs.notifications
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case .me: return L10n.Common.Controls.Tabs.profile
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}
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}
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var inputLabels: [String]? {
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switch self {
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case .home, .compose, .notifications, .me:
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return nil
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case .search:
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return [
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L10n.Common.Controls.Tabs.A11Y.search,
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L10n.Common.Controls.Tabs.A11Y.explore,
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L10n.Common.Controls.Tabs.searchAndExplore
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]
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}
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}
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var image: UIImage {
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switch self {
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case .home: return UIImage(systemName: "house")!
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case .search: return UIImage(systemName: "magnifyingglass")!
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case .compose: return UIImage(systemName: "square.and.pencil")!
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case .notifications: return UIImage(systemName: "bell")!
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case .me: return UIImage(systemName: "person")!
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}
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}
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var selectedImage: UIImage {
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return image.withTintColor(Asset.Colors.Brand.blurple.color, renderingMode: .alwaysOriginal)
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}
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var largeImage: UIImage {
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return image.withRenderingMode(.alwaysTemplate).resized(size: CGSize(width: 80, height: 80))
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}
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@MainActor
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func viewController(context: AppContext, authContext: AuthContext?, coordinator: SceneCoordinator) async -> UIViewController {
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guard let authContext, let me = authContext.mastodonAuthenticationBox.authentication.account() else {
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return UITableViewController()
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}
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let viewController: UIViewController
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switch self {
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case .home:
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let _viewController = HomeTimelineViewController()
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_viewController.context = context
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_viewController.coordinator = coordinator
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_viewController.viewModel = .init(context: context, authContext: authContext)
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viewController = _viewController
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case .search:
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let _viewController = SearchViewController()
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_viewController.context = context
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_viewController.coordinator = coordinator
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_viewController.viewModel = .init(context: context, authContext: authContext)
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viewController = _viewController
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case .compose:
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viewController = UIViewController()
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case .notifications:
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let _viewController = NotificationViewController()
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_viewController.context = context
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_viewController.coordinator = coordinator
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_viewController.viewModel = .init(context: context, authContext: authContext)
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viewController = _viewController
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case .me:
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let _viewController = ProfileViewController()
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_viewController.context = context
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_viewController.coordinator = coordinator
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_viewController.viewModel = ProfileViewModel(context: context, authContext: authContext, account: me, relationship: nil, me: me)
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viewController = _viewController
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}
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viewController.title = self.title
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return AdaptiveStatusBarStyleNavigationController(rootViewController: viewController)
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}
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}
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var _viewControllers: [UIViewController] = []
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private(set) var isReadyForWizardAvatarButton = false
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// output
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@Published var avatarURL: URL?
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// haptic feedback
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private let selectionFeedbackGenerator = UIImpactFeedbackGenerator(style: .medium)
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init(
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context: AppContext,
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coordinator: SceneCoordinator,
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authContext: AuthContext?
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) {
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self.context = context
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self.coordinator = coordinator
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self.authContext = authContext
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super.init(nibName: nil, bundle: nil)
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tabBar.addInteraction(largeContentViewerInteraction)
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}
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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}
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extension MainTabBarController {
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open override var childForStatusBarStyle: UIViewController? {
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return selectedViewController
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}
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override func viewDidLoad() {
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super.viewDidLoad()
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delegate = self
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view.backgroundColor = .systemBackground
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// seealso: `ThemeService.apply(theme:)`
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Task { @MainActor in
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let tabs = Tab.allCases
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var viewControllers = [UIViewController]()
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for tab in tabs {
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let viewController = await tab.viewController(context: context, authContext: authContext, coordinator: coordinator)
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viewController.tabBarItem.tag = tab.tag
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viewController.tabBarItem.title = tab.title // needs for acessiblity large content label
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viewController.tabBarItem.image = tab.image.imageWithoutBaseline()
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viewController.tabBarItem.largeContentSizeImage = tab.largeImage.imageWithoutBaseline()
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viewController.tabBarItem.accessibilityLabel = tab.title
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viewController.tabBarItem.accessibilityUserInputLabels = tab.inputLabels
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viewController.tabBarItem.imageInsets = UIEdgeInsets(top: 6, left: 0, bottom: -6, right: 0)
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viewControllers.append(viewController)
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}
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_viewControllers = viewControllers
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setViewControllers(viewControllers, animated: false)
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selectedIndex = 0
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// hacky workaround for FB11986255 (Setting accessibilityUserInputLabels on a UITabBarItem has no effect)
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DispatchQueue.main.asyncAfter(deadline: .now() + .milliseconds(50)) {
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if let searchItem = self.tabBar.subviews.first(where: { $0.accessibilityLabel == Tab.search.title }) {
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searchItem.accessibilityUserInputLabels = Tab.search.inputLabels
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}
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}
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context.apiService.error
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.receive(on: DispatchQueue.main)
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.sink { [weak self] error in
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guard let self = self, let coordinator = self.coordinator else { return }
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switch error {
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case .implicit:
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break
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case .explicit:
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let alertController = UIAlertController(for: error, title: nil, preferredStyle: .alert)
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let okAction = UIAlertAction(title: "OK", style: .default, handler: nil)
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alertController.addAction(okAction)
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_ = coordinator.present(
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scene: .alertController(alertController: alertController),
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from: nil,
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transition: .alertController(animated: true, completion: nil)
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)
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}
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}
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.store(in: &disposeBag)
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// handle post failure
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// handle push notification.
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// toggle entry when finish fetch latest notification
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Publishers.CombineLatest(
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context.notificationService.unreadNotificationCountDidUpdate,
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$currentTab
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)
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.receive(on: DispatchQueue.main)
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.sink { [weak self] authentication, currentTab in
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guard let self = self else { return }
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guard let notificationViewController = self.notificationViewController else { return }
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let authentication = self.authContext?.mastodonAuthenticationBox.userAuthorization
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let hasUnreadPushNotification: Bool = authentication.flatMap { authentication in
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let count = UserDefaults.shared.getNotificationCountWithAccessToken(accessToken: authentication.accessToken)
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return count > 0
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} ?? false
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let image: UIImage
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if hasUnreadPushNotification {
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let imageConfiguration = UIImage.SymbolConfiguration(paletteColors: [.red, SystemTheme.tabBarItemNormalIconColor])
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image = UIImage(systemName: "bell.badge", withConfiguration: imageConfiguration)!
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} else {
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image = Tab.notifications.image
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}
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notificationViewController.tabBarItem.image = image.imageWithoutBaseline()
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notificationViewController.navigationController?.tabBarItem.image = image.imageWithoutBaseline()
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}
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.store(in: &disposeBag)
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layoutAvatarButton()
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$avatarURL
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.receive(on: DispatchQueue.main)
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.sink { [weak self] avatarURL in
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guard let self = self else { return }
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self.avatarButton.avatarImageView.setImage(
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url: avatarURL,
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placeholder: .placeholder(color: .systemFill),
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scaleToSize: MainTabBarController.avatarButtonSize
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)
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}
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.store(in: &disposeBag)
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NotificationCenter.default.publisher(for: .userFetched)
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.receive(on: DispatchQueue.main)
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.sink { [weak self] _ in
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guard let self else { return }
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if let account = self.authContext?.mastodonAuthenticationBox.authentication.account() {
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self.avatarURL = account.avatarImageURL()
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// a11y
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let _profileTabItem = self.tabBar.items?.first { item in item.tag == Tab.me.tag }
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guard let profileTabItem = _profileTabItem else { return }
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profileTabItem.accessibilityHint = L10n.Scene.AccountList.tabBarHint(account.displayNameWithFallback)
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self.context.authenticationService.updateActiveUserAccountPublisher
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.sink { [weak self] in
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self?.updateUserAccount()
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}
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.store(in: &self.disposeBag)
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}
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}
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.store(in: &disposeBag)
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let tabBarLongPressGestureRecognizer = UILongPressGestureRecognizer()
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tabBarLongPressGestureRecognizer.addTarget(self, action: #selector(MainTabBarController.tabBarLongPressGestureRecognizerHandler(_:)))
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tabBarLongPressGestureRecognizer.delegate = self
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tabBar.addGestureRecognizer(tabBarLongPressGestureRecognizer)
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let tabBarDoubleTapGestureRecognizer = UITapGestureRecognizer()
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tabBarDoubleTapGestureRecognizer.numberOfTapsRequired = 2
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tabBarDoubleTapGestureRecognizer.addTarget(self, action: #selector(MainTabBarController.tabBarDoubleTapGestureRecognizerHandler(_:)))
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tabBarDoubleTapGestureRecognizer.delaysTouchesEnded = false
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tabBar.addGestureRecognizer(tabBarDoubleTapGestureRecognizer)
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self.isReadyForWizardAvatarButton = authContext != nil
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$currentTab
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.receive(on: DispatchQueue.main)
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.sink { [weak self] tab in
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guard let self = self else { return }
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self.updateAvatarButtonAppearance()
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}
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.store(in: &disposeBag)
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updateTabBarDisplay()
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}
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}
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override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
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super.traitCollectionDidChange(previousTraitCollection)
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updateTabBarDisplay()
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updateAvatarButtonAppearance()
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}
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override var supportedInterfaceOrientations: UIInterfaceOrientationMask {
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.portraitOnPhone
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}
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}
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extension MainTabBarController {
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@objc private func composeButtonDidPressed(_ sender: Any) {
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selectionFeedbackGenerator.impactOccurred()
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guard let authContext = self.authContext else { return }
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let composeViewModel = ComposeViewModel(
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context: context,
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authContext: authContext,
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composeContext: .composeStatus,
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destination: .topLevel
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)
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_ = coordinator.present(scene: .compose(viewModel: composeViewModel), transition: .modal(animated: true, completion: nil))
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}
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private func touchedTab(by sender: UIGestureRecognizer) -> Tab? {
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var _tab: Tab?
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let location = sender.location(in: tabBar)
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for item in tabBar.items ?? [] {
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guard let tab = Tab(rawValue: item.tag) else { continue }
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guard let view = item.value(forKey: "view") as? UIView else { continue }
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guard view.frame.contains(location) else { continue}
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_tab = tab
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break
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}
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return _tab
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}
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@objc private func tabBarDoubleTapGestureRecognizerHandler(_ sender: UITapGestureRecognizer) {
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guard sender.state == .ended else { return }
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guard let tab = touchedTab(by: sender) else { return }
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switch tab {
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case .search:
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assert(Thread.isMainThread)
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// double tapping search tab opens the search bar without additional taps
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searchViewController?.searchBar.becomeFirstResponder()
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default:
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break
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}
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}
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@objc private func tabBarLongPressGestureRecognizerHandler(_ sender: UILongPressGestureRecognizer) {
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guard sender.state == .began else { return }
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guard let tab = touchedTab(by: sender) else { return }
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switch tab {
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case .me:
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guard let authContext = self.authContext else { return }
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let accountListViewModel = AccountListViewModel(context: context, authContext: authContext)
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_ = coordinator.present(scene: .accountList(viewModel: accountListViewModel), from: self, transition: .panModal)
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default:
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break
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}
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}
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}
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extension MainTabBarController {
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private func updateTabBarDisplay() {
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switch traitCollection.horizontalSizeClass {
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case .compact:
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tabBar.isHidden = false
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default:
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tabBar.isHidden = true
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}
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}
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private func layoutAvatarButton() {
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guard avatarButton.superview == nil else { return }
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let _profileTabItem = self.tabBar.items?.first { item in item.tag == Tab.me.tag }
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guard let profileTabItem = _profileTabItem else { return }
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guard let view = profileTabItem.value(forKey: "view") as? UIView else {
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return
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}
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let _anchorImageView = view.subviews.first { subview in subview is UIImageView } as? UIImageView
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guard let anchorImageView = _anchorImageView else {
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assertionFailure()
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return
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}
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anchorImageView.alpha = 0
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accountSwitcherChevron.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(accountSwitcherChevron)
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self.avatarButton.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(self.avatarButton)
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NSLayoutConstraint.activate([
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self.avatarButton.centerXAnchor.constraint(equalTo: anchorImageView.centerXAnchor),
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self.avatarButton.centerYAnchor.constraint(equalTo: anchorImageView.centerYAnchor),
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self.avatarButton.widthAnchor.constraint(equalToConstant: MainTabBarController.avatarButtonSize.width).priority(.required - 1),
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self.avatarButton.heightAnchor.constraint(equalToConstant: MainTabBarController.avatarButtonSize.height).priority(.required - 1),
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accountSwitcherChevron.widthAnchor.constraint(equalToConstant: 10),
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accountSwitcherChevron.heightAnchor.constraint(equalToConstant: 18),
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accountSwitcherChevron.leadingAnchor.constraint(equalTo: avatarButton.trailingAnchor, constant: 8),
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accountSwitcherChevron.centerYAnchor.constraint(equalTo: avatarButton.centerYAnchor)
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])
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self.avatarButton.setContentHuggingPriority(.required - 1, for: .horizontal)
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self.avatarButton.setContentHuggingPriority(.required - 1, for: .vertical)
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self.avatarButton.isUserInteractionEnabled = false
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}
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private func updateAvatarButtonAppearance() {
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if currentTab == .me {
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accountSwitcherChevron.tintColor = Asset.Colors.Brand.blurple.color
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avatarButton.borderColor = Asset.Colors.Brand.blurple.color
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} else {
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accountSwitcherChevron.tintColor = Asset.Theme.System.tabBarItemInactiveIconColor.color
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avatarButton.borderColor = Asset.Theme.System.tabBarItemInactiveIconColor.color
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}
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avatarButton.setNeedsLayout()
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}
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private func updateUserAccount() {
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guard let authContext = authContext else { return }
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Task { @MainActor in
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let profileResponse = try await context.apiService.authenticatedUserInfo(
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authenticationBox: authContext.mastodonAuthenticationBox
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)
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if let user = authContext.mastodonAuthenticationBox.authentication.user(
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in: context.managedObjectContext
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) {
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user.update(
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property: .init(
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entity: profileResponse.value,
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domain: authContext.mastodonAuthenticationBox.domain
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)
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)
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}
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}
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}
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}
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extension MainTabBarController {
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var notificationViewController: NotificationViewController? {
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return viewController(of: NotificationViewController.self)
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}
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var searchViewController: SearchViewController? {
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return viewController(of: SearchViewController.self)
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}
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}
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// MARK: - UITabBarControllerDelegate
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extension MainTabBarController: UITabBarControllerDelegate {
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func tabBarController(_ tabBarController: UITabBarController, shouldSelect viewController: UIViewController) -> Bool {
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if let tab = Tab(rawValue: viewController.tabBarItem.tag), tab == .compose {
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composeButtonDidPressed(tabBarController)
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return false
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}
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// Different tab has been selected, send haptic feedback
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if viewController.tabBarItem.tag != tabBarController.selectedIndex {
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selectionFeedbackGenerator.impactOccurred()
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}
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// Assert index is as same as the tab rawValue. This check needs to be done `shouldSelect`
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// because the nav controller has already popped in `didSelect`.
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if currentTab.rawValue == viewController.tabBarItem.tag,
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let navigationController = viewController as? UINavigationController,
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navigationController.viewControllers.count == 1,
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let scrollViewContainer = navigationController.topViewController as? ScrollViewContainer {
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scrollViewContainer.scrollToTop(animated: true)
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}
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return true
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}
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func tabBarController(_ tabBarController: UITabBarController, didSelect viewController: UIViewController) {
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if let tab = Tab(rawValue: viewController.tabBarItem.tag) {
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currentTab = tab
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}
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}
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}
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// HIG: keyboard UX
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// https://developer.apple.com/design/human-interface-guidelines/macos/user-interaction/keyboard/
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extension MainTabBarController {
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|
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var switchToTabKeyCommands: [UIKeyCommand] {
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var commands: [UIKeyCommand] = []
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let tabs: [Tab] = [
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.home,
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.search,
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.notifications,
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.me
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]
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for (i, tab) in tabs.enumerated() {
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let title = L10n.Common.Controls.Keyboard.Common.switchToTab(tab.title)
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let input = String(i + 1)
|
|
let command = UIKeyCommand(
|
|
title: title,
|
|
image: nil,
|
|
action: #selector(MainTabBarController.switchToTabKeyCommandHandler(_:)),
|
|
input: input,
|
|
modifierFlags: .command,
|
|
propertyList: tab.rawValue,
|
|
alternates: [],
|
|
discoverabilityTitle: nil,
|
|
attributes: [],
|
|
state: .off
|
|
)
|
|
commands.append(command)
|
|
}
|
|
return commands
|
|
}
|
|
|
|
var showFavoritesKeyCommand: UIKeyCommand {
|
|
UIKeyCommand(
|
|
title: L10n.Common.Controls.Keyboard.Common.showFavorites,
|
|
image: nil,
|
|
action: #selector(MainTabBarController.showFavoritesKeyCommandHandler(_:)),
|
|
input: "f",
|
|
modifierFlags: .command,
|
|
propertyList: nil,
|
|
alternates: [],
|
|
discoverabilityTitle: nil,
|
|
attributes: [],
|
|
state: .off
|
|
)
|
|
}
|
|
|
|
var openSettingsKeyCommand: UIKeyCommand {
|
|
UIKeyCommand(
|
|
title: L10n.Common.Controls.Keyboard.Common.openSettings,
|
|
image: nil,
|
|
action: #selector(MainTabBarController.openSettingsKeyCommandHandler(_:)),
|
|
input: ",",
|
|
modifierFlags: .command,
|
|
propertyList: nil,
|
|
alternates: [],
|
|
discoverabilityTitle: nil,
|
|
attributes: [],
|
|
state: .off
|
|
)
|
|
}
|
|
|
|
var composeNewPostKeyCommand: UIKeyCommand {
|
|
UIKeyCommand(
|
|
title: L10n.Common.Controls.Keyboard.Common.composeNewPost,
|
|
image: nil,
|
|
action: #selector(MainTabBarController.composeNewPostKeyCommandHandler(_:)),
|
|
input: "n",
|
|
modifierFlags: .command,
|
|
propertyList: nil,
|
|
alternates: [],
|
|
discoverabilityTitle: nil,
|
|
attributes: [],
|
|
state: .off
|
|
)
|
|
}
|
|
|
|
override var keyCommands: [UIKeyCommand]? {
|
|
guard let topMost = self.topMost else {
|
|
return []
|
|
}
|
|
|
|
var commands: [UIKeyCommand] = []
|
|
|
|
if topMost.isModal {
|
|
|
|
} else {
|
|
// switch tabs
|
|
commands.append(contentsOf: switchToTabKeyCommands)
|
|
|
|
// show compose
|
|
if !(self.topMost is ComposeViewController) {
|
|
commands.append(composeNewPostKeyCommand)
|
|
}
|
|
|
|
// show favorites
|
|
if !(self.topMost is FavoriteViewController) {
|
|
commands.append(showFavoritesKeyCommand)
|
|
}
|
|
|
|
// open settings
|
|
if context.settingService.currentSetting.value != nil {
|
|
commands.append(openSettingsKeyCommand)
|
|
}
|
|
}
|
|
|
|
return commands
|
|
}
|
|
|
|
@objc private func switchToTabKeyCommandHandler(_ sender: UIKeyCommand) {
|
|
guard let rawValue = sender.propertyList as? Int,
|
|
let tab = Tab(rawValue: rawValue) else { return }
|
|
|
|
guard let index = Tab.allCases.firstIndex(of: tab) else { return }
|
|
let previousTab = Tab(rawValue: selectedIndex)
|
|
selectedIndex = index
|
|
if let tab = Tab(rawValue: index) {
|
|
currentTab = tab
|
|
}
|
|
|
|
if let previousTab = previousTab {
|
|
switch (tab, previousTab) {
|
|
case (.home, .home):
|
|
guard let navigationController = topMost?.navigationController else { return }
|
|
if navigationController.viewControllers.count > 1 {
|
|
// pop to top when previous tab position already is home
|
|
navigationController.popToRootViewController(animated: true)
|
|
} else if let homeTimelineViewController = topMost as? HomeTimelineViewController {
|
|
// trigger scrollToTop if topMost is home timeline
|
|
homeTimelineViewController.scrollToTop(animated: true)
|
|
}
|
|
default:
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
@objc private func showFavoritesKeyCommandHandler(_ sender: UIKeyCommand) {
|
|
guard let authContext = self.authContext else { return }
|
|
let favoriteViewModel = FavoriteViewModel(context: context, authContext: authContext)
|
|
_ = coordinator.present(scene: .favorite(viewModel: favoriteViewModel), from: nil, transition: .show)
|
|
}
|
|
|
|
@objc private func openSettingsKeyCommandHandler(_ sender: UIKeyCommand) {
|
|
guard let setting = context.settingService.currentSetting.value else { return }
|
|
|
|
_ = coordinator.present(scene: .settings(setting: setting), from: self, transition: .none)
|
|
}
|
|
|
|
@objc private func composeNewPostKeyCommandHandler(_ sender: UIKeyCommand) {
|
|
guard let authContext = self.authContext else { return }
|
|
let composeViewModel = ComposeViewModel(
|
|
context: context,
|
|
authContext: authContext,
|
|
composeContext: .composeStatus,
|
|
destination: .topLevel
|
|
)
|
|
_ = coordinator.present(scene: .compose(viewModel: composeViewModel), from: nil, transition: .modal(animated: true, completion: nil))
|
|
}
|
|
|
|
}
|
|
|
|
extension MainTabBarController: UIGestureRecognizerDelegate {
|
|
func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
|
|
true
|
|
}
|
|
}
|