mastodon-ios/Mastodon/Scene/MainTab/MainTabBarController.swift

378 lines
16 KiB
Swift

//
// MainTabBarController.swift
// Mastodon
//
// Created by Cirno MainasuK on 2021-1-27.
//
import os.log
import UIKit
import Combine
import SafariServices
class MainTabBarController: UITabBarController {
var disposeBag = Set<AnyCancellable>()
weak var context: AppContext!
weak var coordinator: SceneCoordinator!
enum Tab: Int, CaseIterable {
case home
case search
case notification
case me
var title: String {
switch self {
case .home: return L10n.Common.Controls.Tabs.home
case .search: return L10n.Common.Controls.Tabs.search
case .notification: return L10n.Common.Controls.Tabs.notification
case .me: return L10n.Common.Controls.Tabs.profile
}
}
var image: UIImage {
switch self {
case .home: return UIImage(systemName: "house.fill")!
case .search: return UIImage(systemName: "magnifyingglass")!
case .notification: return UIImage(systemName: "bell.fill")!
case .me: return UIImage(systemName: "person.fill")!
}
}
func viewController(context: AppContext, coordinator: SceneCoordinator) -> UIViewController {
let viewController: UIViewController
switch self {
case .home:
#if ASDK
let _viewController: NeedsDependency & UIViewController = UserDefaults.shared.preferAsyncHomeTimeline ? AsyncHomeTimelineViewController() : HomeTimelineViewController()
#else
let _viewController = HomeTimelineViewController()
#endif
_viewController.context = context
_viewController.coordinator = coordinator
viewController = _viewController
case .search:
let _viewController = SearchViewController()
_viewController.context = context
_viewController.coordinator = coordinator
viewController = _viewController
case .notification:
let _viewController = NotificationViewController()
_viewController.context = context
_viewController.coordinator = coordinator
viewController = _viewController
case .me:
let _viewController = ProfileViewController()
_viewController.context = context
_viewController.coordinator = coordinator
_viewController.viewModel = MeProfileViewModel(context: context)
viewController = _viewController
}
viewController.title = self.title
return AdaptiveStatusBarStyleNavigationController(rootViewController: viewController)
}
}
init(context: AppContext, coordinator: SceneCoordinator) {
self.context = context
self.coordinator = coordinator
super.init(nibName: nil, bundle: nil)
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
extension MainTabBarController {
open override var childForStatusBarStyle: UIViewController? {
return selectedViewController
}
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .systemBackground
let tabs = Tab.allCases
let viewControllers: [UIViewController] = tabs.map { tab in
let viewController = tab.viewController(context: context, coordinator: coordinator)
viewController.tabBarItem.title = "" // set text to empty string for image only style (SDK failed to layout when set to nil)
viewController.tabBarItem.image = tab.image
viewController.tabBarItem.accessibilityLabel = tab.title
return viewController
}
setViewControllers(viewControllers, animated: false)
selectedIndex = 0
// TODO: custom accent color
let tabBarAppearance = UITabBarAppearance()
tabBarAppearance.configureWithDefaultBackground()
tabBarAppearance.selectionIndicatorTintColor = Asset.Colors.brandBlue.color
tabBar.standardAppearance = tabBarAppearance
context.apiService.error
.receive(on: DispatchQueue.main)
.sink { [weak self] error in
guard let self = self, let coordinator = self.coordinator else { return }
switch error {
case .implicit:
break
case .explicit:
let alertController = UIAlertController(for: error, title: nil, preferredStyle: .alert)
let okAction = UIAlertAction(title: "OK", style: .default, handler: nil)
alertController.addAction(okAction)
coordinator.present(
scene: .alertController(alertController: alertController),
from: nil,
transition: .alertController(animated: true, completion: nil)
)
}
}
.store(in: &disposeBag)
// handle post failure
context.statusPublishService
.latestPublishingComposeViewModel
.receive(on: DispatchQueue.main)
.sink { [weak self] composeViewModel in
guard let self = self else { return }
guard let composeViewModel = composeViewModel else { return }
guard let currentState = composeViewModel.publishStateMachine.currentState else { return }
guard currentState is ComposeViewModel.PublishState.Fail else { return }
let alertController = UIAlertController(title: L10n.Common.Alerts.PublishPostFailure.title, message: L10n.Common.Alerts.PublishPostFailure.message, preferredStyle: .alert)
let discardAction = UIAlertAction(title: L10n.Common.Controls.Actions.discard, style: .destructive) { [weak self, weak composeViewModel] _ in
guard let self = self else { return }
guard let composeViewModel = composeViewModel else { return }
self.context.statusPublishService.remove(composeViewModel: composeViewModel)
}
alertController.addAction(discardAction)
let retryAction = UIAlertAction(title: L10n.Common.Controls.Actions.tryAgain, style: .default) { [weak composeViewModel] _ in
guard let composeViewModel = composeViewModel else { return }
composeViewModel.publishStateMachine.enter(ComposeViewModel.PublishState.Publishing.self)
}
alertController.addAction(retryAction)
self.present(alertController, animated: true, completion: nil)
}
.store(in: &disposeBag)
// handle push notification. toggle entry when finish fetch latest notification
context.notificationService.hasUnreadPushNotification
.receive(on: DispatchQueue.main)
.sink { [weak self] hasUnreadPushNotification in
guard let self = self else { return }
guard let notificationViewController = self.notificationViewController else { return }
let image = hasUnreadPushNotification ? UIImage(systemName: "bell.badge.fill")! : UIImage(systemName: "bell.fill")!
notificationViewController.tabBarItem.image = image
notificationViewController.navigationController?.tabBarItem.image = image
}
.store(in: &disposeBag)
context.notificationService.requestRevealNotificationPublisher
.receive(on: DispatchQueue.main)
.sink { [weak self] notificationID in
guard let self = self else { return }
self.coordinator.switchToTabBar(tab: .notification)
let threadViewModel = RemoteThreadViewModel(context: self.context, notificationID: notificationID)
self.coordinator.present(scene: .thread(viewModel: threadViewModel), from: nil, transition: .show)
}
.store(in: &disposeBag)
}
}
extension MainTabBarController {
var notificationViewController: NotificationViewController? {
return viewController(of: NotificationViewController.self)
}
}
// HIG: keyboard UX
// https://developer.apple.com/design/human-interface-guidelines/macos/user-interaction/keyboard/
extension MainTabBarController {
var switchToTabKeyCommands: [UIKeyCommand] {
var commands: [UIKeyCommand] = []
for (i, tab) in Tab.allCases.enumerated() {
let title = L10n.Common.Controls.Keyboard.Common.switchToTab(tab.title)
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 }
os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: %s", ((#file as NSString).lastPathComponent), #line, #function, tab.title)
guard let index = Tab.allCases.firstIndex(of: tab) else { return }
let previousTab = Tab(rawValue: selectedIndex)
selectedIndex = index
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) {
os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
let favoriteViewModel = FavoriteViewModel(context: context)
coordinator.present(scene: .favorite(viewModel: favoriteViewModel), from: nil, transition: .show)
}
@objc private func openSettingsKeyCommandHandler(_ sender: UIKeyCommand) {
os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
guard let setting = context.settingService.currentSetting.value else { return }
let settingsViewModel = SettingsViewModel(context: context, setting: setting)
coordinator.present(scene: .settings(viewModel: settingsViewModel), from: nil, transition: .modal(animated: true, completion: nil))
}
@objc private func composeNewPostKeyCommandHandler(_ sender: UIKeyCommand) {
os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
let composeViewModel = ComposeViewModel(context: context, composeKind: .post)
coordinator.present(scene: .compose(viewModel: composeViewModel), from: nil, transition: .modal(animated: true, completion: nil))
}
}
#if ASDK
extension MainTabBarController {
override func motionEnded(_ motion: UIEvent.EventSubtype, with event: UIEvent?) {
guard let event = event else { return }
switch event.subtype {
case .motionShake:
let alertController = UIAlertController(title: "ASDK Debug Panel", message: nil, preferredStyle: .alert)
let toggleHomeAction = UIAlertAction(title: "Toggle Home", style: .default) { [weak self] _ in
guard let self = self else { return }
MainTabBarController.toggleAsyncHome()
let okAlertController = UIAlertController(title: "Success", message: "Please restart the app", preferredStyle: .alert)
let okAction = UIAlertAction(title: "OK", style: .default, handler: nil)
okAlertController.addAction(okAction)
self.coordinator.present(scene: .alertController(alertController: okAlertController), from: nil, transition: .alertController(animated: true, completion: nil))
}
alertController.addAction(toggleHomeAction)
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel, handler: nil)
alertController.addAction(cancelAction)
self.coordinator.present(scene: .alertController(alertController: alertController), from: nil, transition: .alertController(animated: true, completion: nil))
default:
break
}
}
static func toggleAsyncHome() {
UserDefaults.shared.preferAsyncHomeTimeline.toggle()
}
}
#endif