forked from zelo72/mastodon-ios
211 lines
8.3 KiB
Swift
211 lines
8.3 KiB
Swift
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//
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// ThreadViewController.swift
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// Mastodon
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//
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// Created by MainasuK Cirno on 2021-4-12.
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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 CoreData
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import AVKit
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final class ThreadViewController: UIViewController, NeedsDependency {
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weak var context: AppContext! { willSet { precondition(!isViewLoaded) } }
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weak var coordinator: SceneCoordinator! { willSet { precondition(!isViewLoaded) } }
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var disposeBag = Set<AnyCancellable>()
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var viewModel: ThreadViewModel!
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let titleView = DoubleTitleLabelNavigationBarTitleView()
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let replyBarButtonItem = AdaptiveUserInterfaceStyleBarButtonItem(
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lightImage: UIImage(systemName: "arrowshape.turn.up.left")!,
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darkImage: UIImage(systemName: "arrowshape.turn.up.left.fill")!
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)
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let tableView: UITableView = {
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let tableView = ControlContainableTableView()
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tableView.register(StatusTableViewCell.self, forCellReuseIdentifier: String(describing: StatusTableViewCell.self))
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tableView.register(TimelineMiddleLoaderTableViewCell.self, forCellReuseIdentifier: String(describing: TimelineMiddleLoaderTableViewCell.self))
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tableView.register(TimelineBottomLoaderTableViewCell.self, forCellReuseIdentifier: String(describing: TimelineBottomLoaderTableViewCell.self))
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tableView.register(ThreadReplyLoaderTableViewCell.self, forCellReuseIdentifier: String(describing: ThreadReplyLoaderTableViewCell.self))
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tableView.rowHeight = UITableView.automaticDimension
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tableView.separatorStyle = .none
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tableView.backgroundColor = .clear
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return tableView
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}()
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deinit {
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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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}
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}
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extension ThreadViewController {
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override func viewDidLoad() {
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super.viewDidLoad()
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view.backgroundColor = Asset.Colors.Background.systemGroupedBackground.color
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navigationItem.title = L10n.Scene.Thread.backTitle
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navigationItem.titleView = titleView
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navigationItem.rightBarButtonItem = replyBarButtonItem
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replyBarButtonItem.button.addTarget(self, action: #selector(ThreadViewController.replyBarButtonItemPressed(_:)), for: .touchUpInside)
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viewModel.tableView = tableView
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viewModel.contentOffsetAdjustableTimelineViewControllerDelegate = self
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tableView.delegate = self
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tableView.prefetchDataSource = self
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viewModel.setupDiffableDataSource(
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for: tableView,
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dependency: self,
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statusTableViewCellDelegate: self,
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threadReplyLoaderTableViewCellDelegate: self
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)
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tableView.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(tableView)
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NSLayoutConstraint.activate([
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tableView.topAnchor.constraint(equalTo: view.topAnchor),
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tableView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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tableView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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tableView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
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])
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viewModel.navigationBarTitle
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.receive(on: DispatchQueue.main)
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.sink { [weak self] title in
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guard let self = self else { return }
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self.titleView.update(title: title ?? L10n.Scene.Thread.backTitle, subtitle: nil)
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}
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.store(in: &disposeBag)
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}
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override func viewWillAppear(_ animated: Bool) {
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super.viewWillAppear(animated)
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// force readable layout frame update
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tableView.reloadData()
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aspectViewWillAppear(animated)
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}
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override func viewDidDisappear(_ animated: Bool) {
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super.viewDidDisappear(animated)
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aspectViewDidDisappear(animated)
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}
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}
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extension ThreadViewController {
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@objc private func replyBarButtonItemPressed(_ sender: UIBarButtonItem) {
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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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}
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}
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// MARK: - StatusTableViewControllerAspect
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extension ThreadViewController: StatusTableViewControllerAspect { }
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// MARK: - TableViewCellHeightCacheableContainer
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extension ThreadViewController: TableViewCellHeightCacheableContainer {
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var cellFrameCache: NSCache<NSNumber, NSValue> { viewModel.cellFrameCache }
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}
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// MARK: - UITableViewDelegate
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extension ThreadViewController: UITableViewDelegate {
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func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
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aspectTableView(tableView, estimatedHeightForRowAt: indexPath)
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}
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func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
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aspectTableView(tableView, willDisplay: cell, forRowAt: indexPath)
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}
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func tableView(_ tableView: UITableView, didEndDisplaying cell: UITableViewCell, forRowAt indexPath: IndexPath) {
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aspectTableView(tableView, didEndDisplaying: cell, forRowAt: indexPath)
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}
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func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
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aspectTableView(tableView, didSelectRowAt: indexPath)
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}
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func tableView(_ tableView: UITableView, willSelectRowAt indexPath: IndexPath) -> IndexPath? {
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guard let diffableDataSource = viewModel.diffableDataSource else { return nil }
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guard let item = diffableDataSource.itemIdentifier(for: indexPath) else { return nil }
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// disable root selection
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switch item {
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case .root:
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return nil
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default:
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return indexPath
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}
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}
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}
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// MARK: - UITableViewDataSourcePrefetching
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extension ThreadViewController: UITableViewDataSourcePrefetching {
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func tableView(_ tableView: UITableView, prefetchRowsAt indexPaths: [IndexPath]) {
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aspectTableView(tableView, prefetchRowsAt: indexPaths)
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}
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}
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// MARK: - ContentOffsetAdjustableTimelineViewControllerDelegate
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extension ThreadViewController: ContentOffsetAdjustableTimelineViewControllerDelegate {
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func navigationBar() -> UINavigationBar? {
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return navigationController?.navigationBar
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}
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}
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// MARK: - AVPlayerViewControllerDelegate
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extension ThreadViewController: AVPlayerViewControllerDelegate {
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func playerViewController(_ playerViewController: AVPlayerViewController, willBeginFullScreenPresentationWithAnimationCoordinator coordinator: UIViewControllerTransitionCoordinator) {
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aspectPlayerViewController(playerViewController, willBeginFullScreenPresentationWithAnimationCoordinator: coordinator)
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}
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func playerViewController(_ playerViewController: AVPlayerViewController, willEndFullScreenPresentationWithAnimationCoordinator coordinator: UIViewControllerTransitionCoordinator) {
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aspectPlayerViewController(playerViewController, willEndFullScreenPresentationWithAnimationCoordinator: coordinator)
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}
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}
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// MARK: - statusTableViewCellDelegate
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extension ThreadViewController: StatusTableViewCellDelegate {
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weak var playerViewControllerDelegate: AVPlayerViewControllerDelegate? { return self }
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func parent() -> UIViewController { return self }
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}
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// MARK: - ThreadReplyLoaderTableViewCellDelegate
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extension ThreadViewController: ThreadReplyLoaderTableViewCellDelegate {
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func threadReplyLoaderTableViewCell(_ cell: ThreadReplyLoaderTableViewCell, loadMoreButtonDidPressed button: UIButton) {
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guard let diffableDataSource = viewModel.diffableDataSource else { return }
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guard let indexPath = tableView.indexPath(for: cell) else { return }
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guard let item = diffableDataSource.itemIdentifier(for: indexPath) else { return }
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guard case let .leafBottomLoader(statusObjectID) = item else { return }
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let nodes = viewModel.descendantNodes.value
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nodes.forEach { node in
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expandReply(node: node, statusObjectID: statusObjectID)
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}
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viewModel.descendantNodes.value = nodes
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}
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private func expandReply(node: ThreadViewModel.LeafNode, statusObjectID: NSManagedObjectID) {
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if node.objectID == statusObjectID {
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node.isChildrenExpanded = true
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} else {
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for child in node.children {
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expandReply(node: child, statusObjectID: statusObjectID)
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}
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}
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}
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}
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