2021-01-28 09:10:30 +01:00
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//
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// PublicTimelineViewController.swift
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// Mastodon
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//
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// Created by sxiaojian on 2021/1/27.
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//
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import AVKit
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import Combine
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2021-02-04 08:09:58 +01:00
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import CoreData
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2021-01-28 09:10:30 +01:00
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import CoreDataStack
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import GameplayKit
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2021-02-02 12:04:24 +01:00
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import os.log
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import UIKit
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2021-01-28 09:10:30 +01:00
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2021-02-25 06:47:30 +01:00
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final class PublicTimelineViewController: UIViewController, NeedsDependency {
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2021-01-28 09:10:30 +01:00
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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: PublicTimelineViewModel!
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let refreshControl = UIRefreshControl()
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2021-01-28 09:10:30 +01:00
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lazy var tableView: UITableView = {
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let tableView = UITableView()
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2021-02-23 08:16:55 +01:00
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tableView.register(StatusTableViewCell.self, forCellReuseIdentifier: String(describing: StatusTableViewCell.self))
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2021-02-04 08:09:58 +01:00
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tableView.register(TimelineMiddleLoaderTableViewCell.self, forCellReuseIdentifier: String(describing: TimelineMiddleLoaderTableViewCell.self))
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2021-02-03 06:01:50 +01:00
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tableView.register(TimelineBottomLoaderTableViewCell.self, forCellReuseIdentifier: String(describing: TimelineBottomLoaderTableViewCell.self))
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2021-01-28 09:10:30 +01:00
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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("%{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 PublicTimelineViewController {
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override func viewDidLoad() {
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super.viewDidLoad()
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title = "Public"
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view.backgroundColor = Asset.Colors.Background.systemGroupedBackground.color
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2021-02-05 04:53:21 +01:00
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2021-02-02 12:04:24 +01:00
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tableView.refreshControl = refreshControl
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refreshControl.addTarget(self, action: #selector(PublicTimelineViewController.refreshControlValueChanged(_:)), for: .valueChanged)
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// bind refresh control
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viewModel.isFetchingLatestTimeline
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.receive(on: DispatchQueue.main)
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.sink { [weak self] isFetching in
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guard let self = self else { return }
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if !isFetching {
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UIView.animate(withDuration: 0.5) { [weak self] in
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guard let self = self else { return }
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self.refreshControl.endRefreshing()
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}
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}
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}
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.store(in: &disposeBag)
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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.tableView = tableView
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viewModel.contentOffsetAdjustableTimelineViewControllerDelegate = self
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tableView.delegate = 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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timelineMiddleLoaderTableViewCellDelegate: self
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)
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}
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2021-03-10 14:19:56 +01:00
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override func viewDidDisappear(_ animated: Bool) {
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super.viewDidDisappear(animated)
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context.videoPlaybackService.viewDidDisappear(from: self)
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}
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2021-02-03 06:01:50 +01:00
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}
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// MARK: - UIScrollViewDelegate
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extension PublicTimelineViewController {
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func scrollViewDidScroll(_ scrollView: UIScrollView) {
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handleScrollViewDidScroll(scrollView)
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}
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}
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// MARK: - Selector
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extension PublicTimelineViewController {
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@objc private func refreshControlValueChanged(_ sender: UIRefreshControl) {
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guard viewModel.stateMachine.enter(PublicTimelineViewModel.State.Loading.self) else {
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sender.endRefreshing()
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return
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}
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}
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}
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// MARK: - UITableViewDelegate
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extension PublicTimelineViewController: UITableViewDelegate {
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func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
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guard let diffableDataSource = viewModel.diffableDataSource else { return 100 }
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guard let item = diffableDataSource.itemIdentifier(for: indexPath) else { return 100 }
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guard let frame = viewModel.cellFrameCache.object(forKey: NSNumber(value: item.hashValue))?.cgRectValue else {
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return 200
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}
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return ceil(frame.height)
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}
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func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {}
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func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
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handleTableView(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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handleTableView(tableView, didEndDisplaying: cell, forRowAt: indexPath)
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guard let diffableDataSource = viewModel.diffableDataSource else { return }
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guard let item = diffableDataSource.itemIdentifier(for: indexPath) else { return }
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let key = item.hashValue
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let frame = cell.frame
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viewModel.cellFrameCache.setObject(NSValue(cgRect: frame), forKey: NSNumber(value: key))
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}
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}
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// MARK: - ContentOffsetAdjustableTimelineViewControllerDelegate
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extension PublicTimelineViewController: 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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2021-02-03 06:01:50 +01:00
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// MARK: - LoadMoreConfigurableTableViewContainer
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extension PublicTimelineViewController: LoadMoreConfigurableTableViewContainer {
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typealias BottomLoaderTableViewCell = TimelineBottomLoaderTableViewCell
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typealias LoadingState = PublicTimelineViewModel.State.LoadingMore
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var loadMoreConfigurableTableView: UITableView { return tableView }
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var loadMoreConfigurableStateMachine: GKStateMachine { return viewModel.stateMachine }
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}
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// MARK: - TimelineMiddleLoaderTableViewCellDelegate
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extension PublicTimelineViewController: TimelineMiddleLoaderTableViewCellDelegate {
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func configure(cell: TimelineMiddleLoaderTableViewCell, upperTimelineTootID: String?, timelineIndexobjectID: NSManagedObjectID?) {
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guard let upperTimelineTootID = upperTimelineTootID else {return}
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viewModel.loadMiddleSateMachineList
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.receive(on: DispatchQueue.main)
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.sink { [weak self] ids in
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guard let _ = self else { return }
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if let stateMachine = ids[upperTimelineTootID] {
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guard let state = stateMachine.currentState else {
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assertionFailure()
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return
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}
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// make success state same as loading due to snapshot updating delay
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let isLoading = state is PublicTimelineViewModel.LoadMiddleState.Loading || state is PublicTimelineViewModel.LoadMiddleState.Success
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cell.loadMoreButton.isHidden = isLoading
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if isLoading {
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cell.activityIndicatorView.startAnimating()
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} else {
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cell.activityIndicatorView.stopAnimating()
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}
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} else {
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cell.loadMoreButton.isHidden = false
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cell.activityIndicatorView.stopAnimating()
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}
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}
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.store(in: &cell.disposeBag)
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var dict = viewModel.loadMiddleSateMachineList.value
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if let _ = dict[upperTimelineTootID] {
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// do nothing
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} else {
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let stateMachine = GKStateMachine(states: [
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PublicTimelineViewModel.LoadMiddleState.Initial(viewModel: viewModel, upperTimelineTootID: upperTimelineTootID),
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PublicTimelineViewModel.LoadMiddleState.Loading(viewModel: viewModel, upperTimelineTootID: upperTimelineTootID),
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PublicTimelineViewModel.LoadMiddleState.Fail(viewModel: viewModel, upperTimelineTootID: upperTimelineTootID),
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PublicTimelineViewModel.LoadMiddleState.Success(viewModel: viewModel, upperTimelineTootID: upperTimelineTootID),
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])
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stateMachine.enter(PublicTimelineViewModel.LoadMiddleState.Initial.self)
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dict[upperTimelineTootID] = stateMachine
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viewModel.loadMiddleSateMachineList.value = dict
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}
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}
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func timelineMiddleLoaderTableViewCell(_ cell: TimelineMiddleLoaderTableViewCell, 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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switch item {
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case .publicMiddleLoader(let upper):
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guard let stateMachine = viewModel.loadMiddleSateMachineList.value[upper] else {
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assertionFailure()
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return
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}
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stateMachine.enter(PublicTimelineViewModel.LoadMiddleState.Loading.self)
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default:
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assertionFailure()
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}
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}
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}
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2021-02-25 06:47:30 +01:00
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2021-03-10 07:36:28 +01:00
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// MARK: - AVPlayerViewControllerDelegate
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extension PublicTimelineViewController: AVPlayerViewControllerDelegate {
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func playerViewController(_ playerViewController: AVPlayerViewController, willBeginFullScreenPresentationWithAnimationCoordinator coordinator: UIViewControllerTransitionCoordinator) {
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handlePlayerViewController(playerViewController, willBeginFullScreenPresentationWithAnimationCoordinator: coordinator)
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}
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func playerViewController(_ playerViewController: AVPlayerViewController, willEndFullScreenPresentationWithAnimationCoordinator coordinator: UIViewControllerTransitionCoordinator) {
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handlePlayerViewController(playerViewController, willEndFullScreenPresentationWithAnimationCoordinator: coordinator)
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}
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}
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2021-02-25 06:47:30 +01:00
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// MARK: - StatusTableViewCellDelegate
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2021-03-10 07:36:28 +01:00
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extension PublicTimelineViewController: 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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