344 lines
14 KiB
Swift
344 lines
14 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 os.log
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import UIKit
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import Combine
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import SafariServices
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class MainTabBarController: UITabBarController {
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var disposeBag = Set<AnyCancellable>()
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weak var context: AppContext!
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weak var coordinator: SceneCoordinator!
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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 notification
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case me
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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.search
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case .notification: return L10n.Common.Controls.Tabs.notification
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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 image: UIImage {
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switch self {
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case .home: return UIImage(systemName: "house.fill")!
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case .search: return UIImage(systemName: "magnifyingglass")!
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case .notification: return UIImage(systemName: "bell.fill")!
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case .me: return UIImage(systemName: "person.fill")!
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}
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}
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func viewController(context: AppContext, coordinator: SceneCoordinator) -> UIViewController {
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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: NeedsDependency & UIViewController = UserDefaults.shared.preferAsyncHomeTimeline ? AsyncHomeTimelineViewController() : HomeTimelineViewController()
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_viewController.context = context
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_viewController.coordinator = coordinator
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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 = _viewController
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case .notification:
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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 = _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 = MeProfileViewModel(context: context)
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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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init(context: AppContext, coordinator: SceneCoordinator) {
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self.context = context
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self.coordinator = coordinator
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super.init(nibName: nil, bundle: nil)
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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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view.backgroundColor = .systemBackground
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let tabs = Tab.allCases
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let viewControllers: [UIViewController] = tabs.map { tab in
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let viewController = tab.viewController(context: context, coordinator: coordinator)
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viewController.tabBarItem.title = "" // set text to empty string for image only style (SDK failed to layout when set to nil)
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viewController.tabBarItem.image = tab.image
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viewController.tabBarItem.accessibilityLabel = tab.title
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return viewController
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}
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setViewControllers(viewControllers, animated: false)
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selectedIndex = 0
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// TODO: custom accent color
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let tabBarAppearance = UITabBarAppearance()
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tabBarAppearance.configureWithDefaultBackground()
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tabBarAppearance.selectionIndicatorTintColor = Asset.Colors.brandBlue.color
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tabBar.standardAppearance = tabBarAppearance
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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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context.statusPublishService
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.latestPublishingComposeViewModel
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.receive(on: DispatchQueue.main)
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.sink { [weak self] composeViewModel in
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guard let self = self else { return }
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guard let composeViewModel = composeViewModel else { return }
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guard let currentState = composeViewModel.publishStateMachine.currentState else { return }
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guard currentState is ComposeViewModel.PublishState.Fail else { return }
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let alertController = UIAlertController(title: L10n.Common.Alerts.PublishPostFailure.title, message: L10n.Common.Alerts.PublishPostFailure.message, preferredStyle: .alert)
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let discardAction = UIAlertAction(title: L10n.Common.Controls.Actions.discard, style: .destructive) { [weak self, weak composeViewModel] _ in
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guard let self = self else { return }
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guard let composeViewModel = composeViewModel else { return }
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self.context.statusPublishService.remove(composeViewModel: composeViewModel)
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}
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alertController.addAction(discardAction)
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let retryAction = UIAlertAction(title: L10n.Common.Controls.Actions.tryAgain, style: .default) { [weak composeViewModel] _ in
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guard let composeViewModel = composeViewModel else { return }
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composeViewModel.publishStateMachine.enter(ComposeViewModel.PublishState.Publishing.self)
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}
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alertController.addAction(retryAction)
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self.present(alertController, animated: true, completion: nil)
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}
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.store(in: &disposeBag)
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// handle push notification. toggle entry when finish fetch latest notification
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context.notificationService.hasUnreadPushNotification
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.receive(on: DispatchQueue.main)
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.sink { [weak self] hasUnreadPushNotification 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 image = hasUnreadPushNotification ? UIImage(systemName: "bell.badge.fill")! : UIImage(systemName: "bell.fill")!
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notificationViewController.tabBarItem.image = image
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notificationViewController.navigationController?.tabBarItem.image = image
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}
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.store(in: &disposeBag)
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context.notificationService.requestRevealNotificationPublisher
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.receive(on: DispatchQueue.main)
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.sink { [weak self] notificationID in
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guard let self = self else { return }
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self.coordinator.switchToTabBar(tab: .notification)
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let threadViewModel = RemoteThreadViewModel(context: self.context, notificationID: notificationID)
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self.coordinator.present(scene: .thread(viewModel: threadViewModel), from: nil, transition: .show)
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}
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.store(in: &disposeBag)
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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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}
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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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var switchToTabKeyCommands: [UIKeyCommand] {
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var commands: [UIKeyCommand] = []
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for (i, tab) in Tab.allCases.enumerated() {
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let title = L10n.Common.Controls.Keyboard.Common.switchToTab(tab.title)
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let input = String(i + 1)
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let command = UIKeyCommand(
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title: title,
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image: nil,
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action: #selector(MainTabBarController.switchToTabKeyCommandHandler(_:)),
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input: input,
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modifierFlags: .command,
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propertyList: tab.rawValue,
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alternates: [],
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discoverabilityTitle: nil,
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attributes: [],
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state: .off
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)
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commands.append(command)
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}
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return commands
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}
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var showFavoritesKeyCommand: UIKeyCommand {
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UIKeyCommand(
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title: L10n.Common.Controls.Keyboard.Common.showFavorites,
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image: nil,
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action: #selector(MainTabBarController.showFavoritesKeyCommandHandler(_:)),
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input: "f",
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modifierFlags: .command,
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propertyList: nil,
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alternates: [],
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discoverabilityTitle: nil,
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attributes: [],
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state: .off
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)
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}
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var openSettingsKeyCommand: UIKeyCommand {
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UIKeyCommand(
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title: L10n.Common.Controls.Keyboard.Common.openSettings,
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image: nil,
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action: #selector(MainTabBarController.openSettingsKeyCommandHandler(_:)),
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input: ",",
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modifierFlags: .command,
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propertyList: nil,
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alternates: [],
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discoverabilityTitle: nil,
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attributes: [],
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state: .off
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)
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}
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var composeNewPostKeyCommand: UIKeyCommand {
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UIKeyCommand(
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title: L10n.Common.Controls.Keyboard.Common.composeNewPost,
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image: nil,
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action: #selector(MainTabBarController.composeNewPostKeyCommandHandler(_:)),
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input: "n",
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modifierFlags: .command,
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propertyList: nil,
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alternates: [],
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discoverabilityTitle: nil,
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attributes: [],
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state: .off
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)
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}
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override var keyCommands: [UIKeyCommand]? {
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guard let topMost = self.topMost else {
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return []
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}
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var commands: [UIKeyCommand] = []
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if topMost.isModal {
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} else {
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// switch tabs
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commands.append(contentsOf: switchToTabKeyCommands)
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// show compose
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if !(self.topMost is ComposeViewController) {
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commands.append(composeNewPostKeyCommand)
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}
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// show favorites
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if !(self.topMost is FavoriteViewController) {
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commands.append(showFavoritesKeyCommand)
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}
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// open settings
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if context.settingService.currentSetting.value != nil {
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commands.append(openSettingsKeyCommand)
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}
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}
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return commands
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}
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@objc private func switchToTabKeyCommandHandler(_ sender: UIKeyCommand) {
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guard let rawValue = sender.propertyList as? Int,
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let tab = Tab(rawValue: rawValue) else { return }
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: %s", ((#file as NSString).lastPathComponent), #line, #function, tab.title)
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guard let index = Tab.allCases.firstIndex(of: tab) else { return }
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let previousTab = Tab(rawValue: selectedIndex)
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selectedIndex = index
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if let previousTab = previousTab {
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switch (tab, previousTab) {
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case (.home, .home):
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guard let navigationController = topMost?.navigationController else { return }
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if navigationController.viewControllers.count > 1 {
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// pop to top when previous tab position already is home
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navigationController.popToRootViewController(animated: true)
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} else if let homeTimelineViewController = topMost as? HomeTimelineViewController {
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// trigger scrollToTop if topMost is home timeline
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homeTimelineViewController.scrollToTop(animated: true)
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}
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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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@objc private func showFavoritesKeyCommandHandler(_ sender: UIKeyCommand) {
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
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let favoriteViewModel = FavoriteViewModel(context: context)
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coordinator.present(scene: .favorite(viewModel: favoriteViewModel), from: nil, transition: .show)
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}
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@objc private func openSettingsKeyCommandHandler(_ sender: UIKeyCommand) {
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
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guard let setting = context.settingService.currentSetting.value else { return }
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let settingsViewModel = SettingsViewModel(context: context, setting: setting)
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coordinator.present(scene: .settings(viewModel: settingsViewModel), from: nil, transition: .modal(animated: true, completion: nil))
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}
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@objc private func composeNewPostKeyCommandHandler(_ sender: UIKeyCommand) {
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
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let composeViewModel = ComposeViewModel(context: context, composeKind: .post)
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coordinator.present(scene: .compose(viewModel: composeViewModel), from: nil, transition: .modal(animated: true, completion: nil))
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}
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}
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