mastodon-ios/Mastodon/Scene/Thread/ThreadViewController.swift

268 lines
11 KiB
Swift

//
// ThreadViewController.swift
// Mastodon
//
// Created by MainasuK Cirno on 2021-4-12.
//
import os.log
import UIKit
import Combine
import CoreData
import AVKit
import MastodonMeta
final class ThreadViewController: UIViewController, NeedsDependency, MediaPreviewableViewController {
weak var context: AppContext! { willSet { precondition(!isViewLoaded) } }
weak var coordinator: SceneCoordinator! { willSet { precondition(!isViewLoaded) } }
var disposeBag = Set<AnyCancellable>()
var viewModel: ThreadViewModel!
let mediaPreviewTransitionController = MediaPreviewTransitionController()
let titleView = DoubleTitleLabelNavigationBarTitleView()
let replyBarButtonItem = AdaptiveUserInterfaceStyleBarButtonItem(
lightImage: UIImage(systemName: "arrowshape.turn.up.left")!,
darkImage: UIImage(systemName: "arrowshape.turn.up.left.fill")!
)
let tableView: UITableView = {
let tableView = ControlContainableTableView()
tableView.register(StatusTableViewCell.self, forCellReuseIdentifier: String(describing: StatusTableViewCell.self))
tableView.register(TimelineMiddleLoaderTableViewCell.self, forCellReuseIdentifier: String(describing: TimelineMiddleLoaderTableViewCell.self))
tableView.register(TimelineBottomLoaderTableViewCell.self, forCellReuseIdentifier: String(describing: TimelineBottomLoaderTableViewCell.self))
tableView.register(ThreadReplyLoaderTableViewCell.self, forCellReuseIdentifier: String(describing: ThreadReplyLoaderTableViewCell.self))
tableView.rowHeight = UITableView.automaticDimension
tableView.separatorStyle = .none
tableView.backgroundColor = .clear
return tableView
}()
deinit {
os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s:", ((#file as NSString).lastPathComponent), #line, #function)
}
}
extension ThreadViewController {
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = ThemeService.shared.currentTheme.value.secondarySystemBackgroundColor
ThemeService.shared.currentTheme
.receive(on: RunLoop.main)
.sink { [weak self] theme in
guard let self = self else { return }
self.view.backgroundColor = theme.secondarySystemBackgroundColor
}
.store(in: &disposeBag)
navigationItem.title = L10n.Scene.Thread.backTitle
navigationItem.titleView = titleView
navigationItem.rightBarButtonItem = replyBarButtonItem
replyBarButtonItem.button.addTarget(self, action: #selector(ThreadViewController.replyBarButtonItemPressed(_:)), for: .touchUpInside)
viewModel.tableView = tableView
viewModel.contentOffsetAdjustableTimelineViewControllerDelegate = self
tableView.delegate = self
tableView.prefetchDataSource = self
viewModel.setupDiffableDataSource(
for: tableView,
dependency: self,
statusTableViewCellDelegate: self,
threadReplyLoaderTableViewCellDelegate: self
)
tableView.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(tableView)
NSLayoutConstraint.activate([
tableView.topAnchor.constraint(equalTo: view.topAnchor),
tableView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
tableView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
tableView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
])
Publishers.CombineLatest(
viewModel.navigationBarTitle,
viewModel.navigationBarTitleEmojiMeta
)
.receive(on: DispatchQueue.main)
.sink { [weak self] title, emojiMeta in
guard let self = self else { return }
guard let title = title else {
self.titleView.update(title: "", subtitle: nil)
return
}
let mastodonContent = MastodonContent(content: title, emojis: emojiMeta ?? [:])
do {
let metaContent = try MastodonMetaContent.convert(document: mastodonContent)
self.titleView.update(titleMetaContent: metaContent, subtitle: nil)
} catch {
assertionFailure()
}
}
.store(in: &disposeBag)
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
aspectViewWillAppear(animated)
}
override func viewDidDisappear(_ animated: Bool) {
super.viewDidDisappear(animated)
aspectViewDidDisappear(animated)
}
}
extension ThreadViewController {
@objc private func replyBarButtonItemPressed(_ sender: UIBarButtonItem) {
os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
guard let rootItem = viewModel.rootItem.value,
case let .root(statusObjectID, _) = rootItem else { return }
let composeViewModel = ComposeViewModel(context: context, composeKind: .reply(repliedToStatusObjectID: statusObjectID))
coordinator.present(scene: .compose(viewModel: composeViewModel), from: self, transition: .modal(animated: true, completion: nil))
}
}
// MARK: - StatusTableViewControllerAspect
extension ThreadViewController: StatusTableViewControllerAspect { }
// MARK: - TableViewCellHeightCacheableContainer
extension ThreadViewController: TableViewCellHeightCacheableContainer {
var cellFrameCache: NSCache<NSNumber, NSValue> { viewModel.cellFrameCache }
}
// MARK: - UITableViewDelegate
extension ThreadViewController: UITableViewDelegate {
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
aspectTableView(tableView, estimatedHeightForRowAt: indexPath)
}
func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
aspectTableView(tableView, willDisplay: cell, forRowAt: indexPath)
}
func tableView(_ tableView: UITableView, didEndDisplaying cell: UITableViewCell, forRowAt indexPath: IndexPath) {
aspectTableView(tableView, didEndDisplaying: cell, forRowAt: indexPath)
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
aspectTableView(tableView, didSelectRowAt: indexPath)
}
func tableView(_ tableView: UITableView, willSelectRowAt indexPath: IndexPath) -> IndexPath? {
guard let diffableDataSource = viewModel.diffableDataSource else { return nil }
guard let item = diffableDataSource.itemIdentifier(for: indexPath) else { return nil }
// disable root selection
switch item {
case .root:
return nil
default:
return indexPath
}
}
func tableView(_ tableView: UITableView, contextMenuConfigurationForRowAt indexPath: IndexPath, point: CGPoint) -> UIContextMenuConfiguration? {
return aspectTableView(tableView, contextMenuConfigurationForRowAt: indexPath, point: point)
}
func tableView(_ tableView: UITableView, previewForHighlightingContextMenuWithConfiguration configuration: UIContextMenuConfiguration) -> UITargetedPreview? {
return aspectTableView(tableView, previewForHighlightingContextMenuWithConfiguration: configuration)
}
func tableView(_ tableView: UITableView, previewForDismissingContextMenuWithConfiguration configuration: UIContextMenuConfiguration) -> UITargetedPreview? {
return aspectTableView(tableView, previewForDismissingContextMenuWithConfiguration: configuration)
}
func tableView(_ tableView: UITableView, willPerformPreviewActionForMenuWith configuration: UIContextMenuConfiguration, animator: UIContextMenuInteractionCommitAnimating) {
aspectTableView(tableView, willPerformPreviewActionForMenuWith: configuration, animator: animator)
}
}
// MARK: - UITableViewDataSourcePrefetching
extension ThreadViewController: UITableViewDataSourcePrefetching {
func tableView(_ tableView: UITableView, prefetchRowsAt indexPaths: [IndexPath]) {
aspectTableView(tableView, prefetchRowsAt: indexPaths)
}
}
// MARK: - ContentOffsetAdjustableTimelineViewControllerDelegate
extension ThreadViewController: ContentOffsetAdjustableTimelineViewControllerDelegate {
func navigationBar() -> UINavigationBar? {
return navigationController?.navigationBar
}
}
// MARK: - AVPlayerViewControllerDelegate
extension ThreadViewController: AVPlayerViewControllerDelegate {
func playerViewController(_ playerViewController: AVPlayerViewController, willBeginFullScreenPresentationWithAnimationCoordinator coordinator: UIViewControllerTransitionCoordinator) {
aspectPlayerViewController(playerViewController, willBeginFullScreenPresentationWithAnimationCoordinator: coordinator)
}
func playerViewController(_ playerViewController: AVPlayerViewController, willEndFullScreenPresentationWithAnimationCoordinator coordinator: UIViewControllerTransitionCoordinator) {
aspectPlayerViewController(playerViewController, willEndFullScreenPresentationWithAnimationCoordinator: coordinator)
}
}
// MARK: - statusTableViewCellDelegate
extension ThreadViewController: StatusTableViewCellDelegate {
weak var playerViewControllerDelegate: AVPlayerViewControllerDelegate? { return self }
func parent() -> UIViewController { return self }
}
// MARK: - ThreadReplyLoaderTableViewCellDelegate
extension ThreadViewController: ThreadReplyLoaderTableViewCellDelegate {
func threadReplyLoaderTableViewCell(_ cell: ThreadReplyLoaderTableViewCell, loadMoreButtonDidPressed button: UIButton) {
guard let diffableDataSource = viewModel.diffableDataSource else { return }
guard let indexPath = tableView.indexPath(for: cell) else { return }
guard let item = diffableDataSource.itemIdentifier(for: indexPath) else { return }
guard case let .leafBottomLoader(statusObjectID) = item else { return }
let nodes = viewModel.descendantNodes.value
nodes.forEach { node in
expandReply(node: node, statusObjectID: statusObjectID)
}
viewModel.descendantNodes.value = nodes
}
private func expandReply(node: ThreadViewModel.LeafNode, statusObjectID: NSManagedObjectID) {
if node.objectID == statusObjectID {
node.isChildrenExpanded = true
} else {
for child in node.children {
expandReply(node: child, statusObjectID: statusObjectID)
}
}
}
}
extension ThreadViewController {
override var keyCommands: [UIKeyCommand]? {
return navigationKeyCommands + statusNavigationKeyCommands
}
}
// MARK: - StatusTableViewControllerNavigateable
extension ThreadViewController: StatusTableViewControllerNavigateable {
@objc func navigateKeyCommandHandlerRelay(_ sender: UIKeyCommand) {
navigateKeyCommandHandler(sender)
}
@objc func statusKeyCommandHandlerRelay(_ sender: UIKeyCommand) {
statusKeyCommandHandler(sender)
}
}