Remove TimelineLikeTableViewController
Everything now uses DiffableTimelineLike
This commit is contained in:
parent
654b5d9c59
commit
2b22180191
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@ -154,7 +154,6 @@
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D64D0AB12128D9AE005A6F37 /* OnboardingViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64D0AB02128D9AE005A6F37 /* OnboardingViewController.swift */; };
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D64D8CA92463B494006B0BAA /* MultiThreadDictionary.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64D8CA82463B494006B0BAA /* MultiThreadDictionary.swift */; };
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D64F80E2215875CC00BEF393 /* XCBActionType.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64F80E1215875CC00BEF393 /* XCBActionType.swift */; };
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D65234C9256189D0001AF9CF /* TimelineLikeTableViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D65234C8256189D0001AF9CF /* TimelineLikeTableViewController.swift */; };
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D65234D325618EFA001AF9CF /* TimelineTableViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D65234D225618EFA001AF9CF /* TimelineTableViewController.swift */; };
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D65234E12561AA68001AF9CF /* NotificationsTableViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D65234E02561AA68001AF9CF /* NotificationsTableViewController.swift */; };
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D6531DEE246B81C9000F9538 /* GifvAttachmentView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6531DED246B81C9000F9538 /* GifvAttachmentView.swift */; };
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@ -559,7 +558,6 @@
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D64D0AB02128D9AE005A6F37 /* OnboardingViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = OnboardingViewController.swift; sourceTree = "<group>"; };
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D64D8CA82463B494006B0BAA /* MultiThreadDictionary.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MultiThreadDictionary.swift; sourceTree = "<group>"; };
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D64F80E1215875CC00BEF393 /* XCBActionType.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = XCBActionType.swift; sourceTree = "<group>"; };
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D65234C8256189D0001AF9CF /* TimelineLikeTableViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TimelineLikeTableViewController.swift; sourceTree = "<group>"; };
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D65234D225618EFA001AF9CF /* TimelineTableViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TimelineTableViewController.swift; sourceTree = "<group>"; };
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D65234E02561AA68001AF9CF /* NotificationsTableViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NotificationsTableViewController.swift; sourceTree = "<group>"; };
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D6531DED246B81C9000F9538 /* GifvAttachmentView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = GifvAttachmentView.swift; sourceTree = "<group>"; };
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@ -1523,7 +1521,6 @@
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D6412B0224AFF6A600F5412E /* TabBarScrollableViewController.swift */,
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D6B22A0E2560D52D004D82EF /* TabbedPageViewController.swift */,
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D6538944214D6D7500E3CEFC /* TableViewSwipeActionProvider.swift */,
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D65234C8256189D0001AF9CF /* TimelineLikeTableViewController.swift */,
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D6DFC69D242C490400ACC392 /* TrackpadScrollGestureRecognizer.swift */,
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D6B8DB332182A59300424AF7 /* UIAlertController+Visibility.swift */,
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D6C693FD2162FEEA007D6A6D /* UIViewController+Children.swift */,
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@ -2080,7 +2077,6 @@
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D64BC18F23C18B9D000D0238 /* FollowRequestNotificationTableViewCell.swift in Sources */,
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D693DE5923FE24310061E07D /* InteractivePushTransition.swift in Sources */,
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D69693FA25859A8000F4E116 /* ComposeSceneDelegate.swift in Sources */,
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D65234C9256189D0001AF9CF /* TimelineLikeTableViewController.swift in Sources */,
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D6A3BC8A2321F79B00FD64D5 /* AccountTableViewCell.swift in Sources */,
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D66A77BB233838DC0058F1EC /* UIFont+Traits.swift in Sources */,
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D68FEC4F232C5BC300C84F23 /* SegmentedPageViewController.swift in Sources */,
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@ -1,254 +0,0 @@
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//
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// TimelineLikeTableViewController.swift
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// Tusker
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//
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// Created by Shadowfacts on 11/15/20.
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// Copyright © 2020 Shadowfacts. All rights reserved.
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//
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import UIKit
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/// A table view controller that manages common functionality between timeline-like UIs.
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/// For example, this class handles loading new items when the user scrolls to the end,
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/// refreshing, and pruning offscreen rows automatically.
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class TimelineLikeTableViewController<Item>: EnhancedTableViewController, RefreshableViewController {
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private(set) var loaded = false
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var sections: [[Item]] = []
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private let pageSize = 20
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private var lastLastVisibleRow: IndexPath?
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init() {
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super.init(style: .plain)
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addKeyCommand(MenuController.refreshCommand(discoverabilityTitle: Self.refreshCommandTitle()))
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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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func item(for indexPath: IndexPath) -> Item {
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return sections[indexPath.section][indexPath.row]
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}
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override func viewDidLoad() {
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super.viewDidLoad()
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tableView.rowHeight = UITableView.automaticDimension
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tableView.estimatedRowHeight = 140
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#if !targetEnvironment(macCatalyst)
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self.refreshControl = UIRefreshControl()
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self.refreshControl!.addTarget(self, action: #selector(refresh), for: .valueChanged)
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#endif
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if let prefetchSource = self as? UITableViewDataSourcePrefetching {
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tableView.prefetchDataSource = prefetchSource
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}
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}
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override func viewWillAppear(_ animated: Bool) {
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super.viewWillAppear(animated)
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loadInitial()
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}
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override func viewWillDisappear(_ animated: Bool) {
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super.viewWillDisappear(animated)
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pruneOffscreenRows()
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}
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func loadInitial() {
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guard !loaded else { return }
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// set loaded immediately so we don't trigger another request while the current one is running
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loaded = true
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loadInitialItems() { (items) in
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DispatchQueue.main.async {
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guard items.count > 0 else {
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// set loaded back to false so the next time the VC appears, we try to load again
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// todo: this should probably retry automatically
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self.loaded = false
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return
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}
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if self.sections.count < self.headerSectionsCount() {
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self.sections.insert(contentsOf: Array(repeating: [], count: self.headerSectionsCount() - self.sections.count), at: 0)
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}
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self.sections.append(items)
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self.tableView.reloadData()
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}
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}
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}
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func reloadInitialItems() {
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loaded = false
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sections = []
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loadInitial()
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}
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func cellHeightChanged() {
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// causes the table view to recalculate the cell heights
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tableView.beginUpdates()
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tableView.endUpdates()
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}
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class func refreshCommandTitle() -> String {
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return "Refresh"
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}
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// todo: these three should use Result<[Item], Client.Error> so we can differentiate between failed requests and there actually being no results
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func loadInitialItems(completion: @escaping ([Item]) -> Void) {
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fatalError("loadInitialItems(completion:) must be implemented by subclasses")
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}
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func loadOlder(completion: @escaping ([Item]) -> Void) {
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fatalError("loadOlder(completion:) must be implemented by subclasses")
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}
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func loadNewer(completion: @escaping ([Item]) -> Void) {
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fatalError("loadNewer(completion:) must be implemented by subclasses")
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}
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func willRemoveRows(at indexPaths: [IndexPath]) {
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}
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func headerSectionsCount() -> Int {
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return 0
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}
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private func pruneOffscreenRows() {
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guard let lastVisibleRow = lastLastVisibleRow,
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// never remove the last section
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sections.count - headerSectionsCount() > 1 else {
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return
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}
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let lastSectionIndex = sections.count - 1
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if lastVisibleRow.section < lastSectionIndex {
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// if there is a section below the last visible one
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let sectionsToRemove = (lastVisibleRow.section + 1)...lastSectionIndex
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let indexPathsToRemove = sectionsToRemove.flatMap { (section) in
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sections[section].indices.map { (row) in
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IndexPath(row: row, section: section)
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}
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}
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willRemoveRows(at: indexPathsToRemove)
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UIView.performWithoutAnimation {
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tableView.deleteSections(IndexSet(sectionsToRemove), with: .none)
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}
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sections.removeSubrange(sectionsToRemove)
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} else if lastVisibleRow.section == lastSectionIndex {
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let lastSection = sections.last!
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let lastRowIndex = lastSection.count - 1
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if lastVisibleRow.row < lastRowIndex - pageSize {
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// if there are more than pageSize rows in the current section below the last visible one
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let rowIndicesInLastSectionToRemove = (lastVisibleRow.row + pageSize)..<lastSection.count
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let indexPathsToRemove = rowIndicesInLastSectionToRemove.map {
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IndexPath(row: $0, section: lastSectionIndex)
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}
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willRemoveRows(at: indexPathsToRemove)
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sections[lastSectionIndex].removeSubrange(rowIndicesInLastSectionToRemove)
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UIView.performWithoutAnimation {
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tableView.deleteRows(at: indexPathsToRemove, with: .none)
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}
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}
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}
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}
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// MARK: - UITableViewDataSource
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override func numberOfSections(in tableView: UITableView) -> Int {
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return sections.count
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}
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override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
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return sections[section].count
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}
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override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
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fatalError("tableView(_:cellForRowAt:) must be implemented by subclasses")
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}
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// MARK: - UITableViewDelegate
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override func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
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// this assumes that indexPathsForVisibleRows is always in order
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lastLastVisibleRow = tableView.indexPathsForVisibleRows?.last
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if indexPath.section == sections.count - 1,
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indexPath.row == sections[indexPath.section].count - 1 {
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loadOlder() { (newItems) in
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guard newItems.count > 0 else { return }
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DispatchQueue.main.async {
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let newRows = self.sections.last!.count..<(self.sections.last!.count + newItems.count)
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let newIndexPaths = newRows.map { IndexPath(row: $0, section: self.sections.count - 1) }
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self.sections[self.sections.count - 1].append(contentsOf: newItems)
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UIView.performWithoutAnimation {
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self.tableView.insertRows(at: newIndexPaths, with: .none)
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}
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}
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}
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}
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}
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override func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
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return true
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}
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override func tableView(_ tableView: UITableView, leadingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
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return (tableView.cellForRow(at: indexPath) as? TableViewSwipeActionProvider)?.leadingSwipeActionsConfiguration()
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}
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override func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
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return (tableView.cellForRow(at: indexPath) as? TableViewSwipeActionProvider)?.trailingSwipeActionsConfiguration()
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}
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// MARK: - RefreshableViewController
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func refresh() {
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loadNewer() { (newItems) in
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DispatchQueue.main.async {
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self.refreshControl?.endRefreshing()
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guard newItems.count > 0 else { return }
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let firstNonHeaderSection = self.headerSectionsCount()
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self.sections[firstNonHeaderSection].insert(contentsOf: newItems, at: 0)
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let newIndexPaths = (0..<newItems.count).map { IndexPath(row: $0, section: firstNonHeaderSection) }
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UIView.performWithoutAnimation {
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self.tableView.insertRows(at: newIndexPaths, with: .none)
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}
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// maintain the current position in the list (don't scroll to top)
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self.tableView.scrollToRow(at: IndexPath(row: newItems.count, section: firstNonHeaderSection), at: .top, animated: false)
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}
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}
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}
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}
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extension TimelineLikeTableViewController: BackgroundableViewController {
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func sceneDidEnterBackground() {
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pruneOffscreenRows()
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}
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}
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