504 lines
22 KiB
Swift
504 lines
22 KiB
Swift
//
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// BaseStatusTableViewCell.swift
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// Tusker
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//
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// Created by Shadowfacts on 11/19/19.
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// Copyright © 2019 Shadowfacts. All rights reserved.
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//
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import UIKit
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import Pachyderm
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import Combine
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import AVKit
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protocol StatusTableViewCellDelegate: TuskerNavigationDelegate, MenuActionProvider {
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// @available(iOS, obsoleted: 16.0)
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func statusCellCollapsedStateChanged(_ cell: BaseStatusTableViewCell)
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}
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class BaseStatusTableViewCell: UITableViewCell {
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weak var delegate: StatusTableViewCellDelegate? {
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didSet {
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contentTextView.navigationDelegate = delegate
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}
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}
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var overrideMastodonController: MastodonController?
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var mastodonController: MastodonController! { overrideMastodonController ?? delegate?.apiController }
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@IBOutlet weak var avatarImageView: UIImageView!
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@IBOutlet weak var displayNameLabel: EmojiLabel!
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@IBOutlet weak var usernameLabel: UILabel!
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@IBOutlet weak var metaIndicatorsView: StatusMetaIndicatorsView!
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@IBOutlet weak var contentWarningLabel: EmojiLabel!
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@IBOutlet weak var collapseButton: UIButton!
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@IBOutlet weak var contentTextView: StatusContentTextView!
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@IBOutlet weak var cardView: StatusCardView!
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@IBOutlet weak var attachmentsView: AttachmentsContainerView!
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@IBOutlet weak var pollView: StatusPollView!
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@IBOutlet weak var replyButton: UIButton!
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@IBOutlet weak var favoriteButton: UIButton!
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@IBOutlet weak var reblogButton: UIButton!
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@IBOutlet weak var moreButton: UIButton!
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private(set) var prevThreadLinkView: UIView?
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private(set) var nextThreadLinkView: UIView?
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var statusID: String!
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private(set) var accountID: String!
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private var favorited = false {
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didSet {
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favoriteButton.tintColor = favorited ? UIColor(displayP3Red: 1, green: 0.8, blue: 0, alpha: 1) : tintColor
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}
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}
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private var reblogged = false {
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didSet {
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reblogButton.tintColor = reblogged ? UIColor(displayP3Red: 1, green: 0.8, blue: 0, alpha: 1) : tintColor
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}
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}
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private(set) var statusState: StatusState!
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var collapsible = false {
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didSet {
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collapseButton.isHidden = !collapsible
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statusState?.collapsible = collapsible
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}
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}
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private var collapsed = false {
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didSet {
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statusState?.collapsed = collapsed
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}
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}
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var showStatusAutomatically = false
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private var avatarRequest: ImageCache.Request?
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private var statusUpdater: Cancellable?
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private var accountUpdater: Cancellable?
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private var currentPictureInPictureVideoStatusID: String?
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private var isGrayscale = false
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override func awakeFromNib() {
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super.awakeFromNib()
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displayNameLabel.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(accountPressed)))
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usernameLabel.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(accountPressed)))
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avatarImageView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(accountPressed)))
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avatarImageView.layer.masksToBounds = true
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avatarImageView.addInteraction(UIDragInteraction(delegate: self))
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attachmentsView.delegate = self
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collapseButton.layer.masksToBounds = true
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collapseButton.layer.cornerRadius = 5
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accessibilityElements = [displayNameLabel!, contentWarningLabel!, collapseButton!, contentTextView!, attachmentsView!, pollView!]
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moreButton.showsMenuAsPrimaryAction = true
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NotificationCenter.default.addObserver(self, selector: #selector(preferencesChanged), name: .preferencesChanged, object: nil)
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contentWarningLabel.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(collapseButtonPressed)))
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}
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open func createObserversIfNecessary() {
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if statusUpdater == nil {
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statusUpdater = mastodonController.persistentContainer.statusSubject
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.receive(on: DispatchQueue.main)
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.filter { [unowned self] in $0 == self.statusID }
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.sink { [unowned self] in
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if let mastodonController = mastodonController,
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let status = mastodonController.persistentContainer.status(for: $0) {
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self.updateStatusState(status: status)
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}
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}
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}
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if accountUpdater == nil {
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accountUpdater = mastodonController.persistentContainer.accountSubject
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.receive(on: DispatchQueue.main)
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.filter { [unowned self] in $0 == self.accountID }
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.sink { [unowned self] in
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if let mastodonController = mastodonController,
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let account = mastodonController.persistentContainer.account(for: $0) {
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self.updateUI(account: account)
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}
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}
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}
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}
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final func updateUI(statusID: String, state: StatusState) {
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createObserversIfNecessary()
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guard let status = mastodonController.persistentContainer.status(for: statusID) else {
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fatalError("Missing cached status")
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}
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self.statusID = statusID
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doUpdateUI(status: status, state: state)
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}
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func doUpdateUI(status: StatusMO, state: StatusState) {
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self.statusState = state
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let account = status.account
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self.accountID = account.id
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updateUI(account: account)
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contentTextView.setTextFrom(status: status)
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updateGrayscaleableUI(account: account, status: status)
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updateUIForPreferences(account: account, status: status)
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cardView.updateUI(status: status)
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cardView.isHidden = status.card == nil
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cardView.navigationDelegate = delegate
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cardView.actionProvider = delegate
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attachmentsView.updateUI(status: status)
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updateStatusState(status: status)
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contentWarningLabel.text = status.spoilerText
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contentWarningLabel.isHidden = status.spoilerText.isEmpty
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if !contentWarningLabel.isHidden {
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contentWarningLabel.setEmojis(status.emojis, identifier: statusID)
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}
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let reblogDisabled: Bool
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if mastodonController.instanceFeatures.boostToOriginalAudience {
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// Pleroma allows 'Boost to original audience' for your own private posts
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reblogDisabled = status.visibility == .direct || (status.visibility == .private && status.account.id != mastodonController.account?.id)
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} else {
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reblogDisabled = status.visibility == .private || status.visibility == .direct
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}
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reblogButton.isEnabled = !reblogDisabled && mastodonController.loggedIn
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favoriteButton.isEnabled = mastodonController.loggedIn
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replyButton.isEnabled = mastodonController.loggedIn
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updateStatusIconsForPreferences(status)
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if state.unknown {
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// for some reason the height here can't be computed correctly, so we fallback to the old hack of just considering raw length
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state.resolveFor(status: status, height: 0, textLength: contentTextView.attributedText.length)
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if state.collapsible! && showStatusAutomatically {
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state.collapsed = false
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}
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}
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collapsible = state.collapsible!
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setCollapsed(state.collapsed!, animated: false)
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}
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func updateStatusState(status: StatusMO) {
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favorited = status.favourited
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reblogged = status.reblogged
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if favorited {
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favoriteButton.accessibilityLabel = NSLocalizedString("Undo Favorite", comment: "undo favorite button accessibility label")
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} else {
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favoriteButton.accessibilityLabel = NSLocalizedString("Favorite", comment: "favorite button accessibility label")
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}
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if reblogged {
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reblogButton.accessibilityLabel = NSLocalizedString("Undo Reblog", comment: "undo reblog button accessibility label")
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} else {
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reblogButton.accessibilityLabel = NSLocalizedString("Reblog", comment: "reblog button accessibility label")
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}
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// keep menu in sync with changed states e.g. bookmarked, muted
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// do not include reply action here, because the cell already contains a button for it
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moreButton.menu = UIMenu(title: "", image: nil, identifier: nil, options: [], children: delegate?.actionsForStatus(status, source: .view(moreButton), includeStatusButtonActions: false) ?? [])
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pollView.isHidden = status.poll == nil
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pollView.mastodonController = mastodonController
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pollView.toastableViewController = delegate?.toastableViewController
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pollView.updateUI(status: status, poll: status.poll)
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}
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func updateUI(account: AccountMO) {
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usernameLabel.text = "@\(account.acct)"
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avatarImageView.image = nil
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}
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@objc private func preferencesChanged() {
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guard let mastodonController = mastodonController,
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let account = mastodonController.persistentContainer.account(for: accountID),
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let status = mastodonController.persistentContainer.status(for: statusID) else { return }
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updateUIForPreferences(account: account, status: status)
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}
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func updateUIForPreferences(account: AccountMO, status: StatusMO) {
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avatarImageView.layer.cornerRadius = Preferences.shared.avatarStyle.cornerRadius(for: avatarImageView)
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if Preferences.shared.blurAllMedia {
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attachmentsView.contentHidden = true
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} else if status.sensitive {
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if !Preferences.shared.blurMediaBehindContentWarning && !status.spoilerText.isEmpty {
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attachmentsView.contentHidden = false
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} else {
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attachmentsView.contentHidden = true
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}
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} else {
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attachmentsView.contentHidden = false
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}
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updateStatusIconsForPreferences(status)
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if isGrayscale != Preferences.shared.grayscaleImages {
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updateGrayscaleableUI(account: account, status: status)
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}
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}
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func updateStatusIconsForPreferences(_ status: StatusMO) {
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metaIndicatorsView.updateUI(status: status)
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let reblogButtonImage: UIImage
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if Preferences.shared.alwaysShowStatusVisibilityIcon || reblogButton.isEnabled {
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reblogButtonImage = UIImage(systemName: "repeat")!
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} else {
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reblogButtonImage = UIImage(systemName: status.visibility.imageName)!
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}
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reblogButton.setImage(reblogButtonImage, for: .normal)
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}
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func updateGrayscaleableUI(account: AccountMO, status: StatusMO) {
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isGrayscale = Preferences.shared.grayscaleImages
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let accountID = account.id
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if let avatarURL = account.avatar {
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avatarRequest = ImageCache.avatars.get(avatarURL) { [weak self] (_, image) in
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guard let self = self,
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let image = image,
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self.accountID == accountID,
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let transformedImage = ImageGrayscalifier.convertIfNecessary(url: avatarURL, image: image) else { return }
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DispatchQueue.main.async {
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self.avatarImageView.image = transformedImage
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}
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}
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}
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if contentTextView.hasEmojis {
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contentTextView.setTextFrom(status: status)
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}
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displayNameLabel.updateForAccountDisplayName(account: account)
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}
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func setShowThreadLinks(prev: Bool, next: Bool) {
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if prev {
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if let prevThreadLinkView = prevThreadLinkView {
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prevThreadLinkView.isHidden = false
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} else {
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let view = UIView()
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view.translatesAutoresizingMaskIntoConstraints = false
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view.backgroundColor = tintColor.withAlphaComponent(0.5)
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view.layer.cornerRadius = 2.5
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view.layer.maskedCorners = [.layerMinXMaxYCorner, .layerMaxXMaxYCorner]
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prevThreadLinkView = view
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addSubview(view)
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NSLayoutConstraint.activate([
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view.widthAnchor.constraint(equalToConstant: 5),
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view.centerXAnchor.constraint(equalTo: avatarImageView.centerXAnchor),
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view.topAnchor.constraint(equalTo: topAnchor),
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view.bottomAnchor.constraint(equalTo: avatarImageView.topAnchor, constant: -2),
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])
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}
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} else {
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prevThreadLinkView?.isHidden = true
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}
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if next {
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if let nextThreadLinkView = nextThreadLinkView {
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nextThreadLinkView.isHidden = false
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} else {
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let view = UIView()
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view.translatesAutoresizingMaskIntoConstraints = false
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view.backgroundColor = tintColor.withAlphaComponent(0.5)
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view.layer.cornerRadius = 2.5
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view.layer.maskedCorners = [.layerMinXMinYCorner, .layerMaxXMinYCorner]
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nextThreadLinkView = view
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addSubview(view)
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NSLayoutConstraint.activate([
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view.widthAnchor.constraint(equalToConstant: 5),
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view.centerXAnchor.constraint(equalTo: avatarImageView.centerXAnchor),
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view.topAnchor.constraint(equalTo: avatarImageView.bottomAnchor, constant: 2),
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view.bottomAnchor.constraint(equalTo: bottomAnchor),
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])
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}
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} else {
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nextThreadLinkView?.isHidden = true
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}
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}
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override func prepareForReuse() {
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super.prepareForReuse()
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avatarRequest?.cancel()
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showStatusAutomatically = false
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}
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// MARK: - Interaction
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@IBAction func collapseButtonPressed() {
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setCollapsed(!collapsed, animated: true)
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if #available(iOS 16.0, *) {
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invalidateIntrinsicContentSize()
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} else {
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delegate?.statusCellCollapsedStateChanged(self)
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}
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}
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func setCollapsed(_ collapsed: Bool, animated: Bool) {
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self.collapsed = collapsed
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contentTextView.isHidden = collapsed
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cardView.isHidden = cardView.card == nil || collapsed
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attachmentsView.isHidden = attachmentsView.attachments.count == 0 || collapsed
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pollView.isHidden = pollView.poll == nil || collapsed
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let buttonImage = UIImage(systemName: collapsed ? "chevron.down" : "chevron.up")!
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if animated, let buttonImageView = collapseButton.imageView {
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// we need to use a keyframe animation for this, because we want to control the direction the chevron rotates
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// when rotating ±π, UIKit will always rotate in the same direction
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// using a keyframe to set an intermediate point in the animation allows us to force a specific direction
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UIView.animateKeyframes(withDuration: 0.2, delay: 0, options: .calculationModeLinear, animations: {
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UIView.addKeyframe(withRelativeStartTime: 0, relativeDuration: 0.5) {
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buttonImageView.transform = CGAffineTransform(rotationAngle: collapsed ? .pi / 2 : -.pi / 2)
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}
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UIView.addKeyframe(withRelativeStartTime: 0.5, relativeDuration: 0.5) {
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buttonImageView.transform = CGAffineTransform(rotationAngle: .pi)
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}
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}, completion: { (finished) in
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buttonImageView.transform = .identity
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self.collapseButton.setImage(buttonImage, for: .normal)
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})
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} else {
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collapseButton.setImage(buttonImage, for: .normal)
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}
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if collapsed {
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collapseButton.accessibilityLabel = NSLocalizedString("Expand Status", comment: "expand status button accessibility label")
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} else {
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collapseButton.accessibilityLabel = NSLocalizedString("Collapse Status", comment: "collapse status button accessibility label")
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}
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}
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@IBAction func replyPressed() {
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delegate?.compose(inReplyToID: statusID)
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}
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@IBAction func favoritePressed() {
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guard let status = mastodonController.persistentContainer.status(for: statusID) else { fatalError("Missing cached status \(statusID!)") }
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Task {
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await FavoriteService(status: status, mastodonController: mastodonController, presenter: delegate!).toggleFavorite()
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}
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}
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@IBAction func reblogPressed() {
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guard let status = mastodonController.persistentContainer.status(for: statusID) else { fatalError("Missing cached status \(statusID!)") }
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Task {
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await ReblogService(status: status, mastodonController: mastodonController, presenter: delegate!).toggleReblog()
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}
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}
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@IBAction func morePressed() {
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delegate?.showMoreOptions(forStatus: statusID, source: .view(moreButton))
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}
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@objc func accountPressed() {
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delegate?.selected(account: accountID)
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}
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}
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extension BaseStatusTableViewCell: AttachmentViewDelegate {
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func attachmentViewGallery(startingAt index: Int) -> GalleryViewController? {
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guard let delegate = delegate,
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let status = mastodonController.persistentContainer.status(for: statusID) else { return nil }
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let sourceViews = status.attachments.map(attachmentsView.getAttachmentView(for:))
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let gallery = delegate.gallery(attachments: status.attachments, sourceViews: sourceViews, startIndex: index)
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gallery.avPlayerViewControllerDelegate = self
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return gallery
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}
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func attachmentViewPresent(_ vc: UIViewController, animated: Bool) {
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delegate?.present(vc, animated: animated)
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}
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}
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// todo: This is not ideal. It works when the original cell remains visible and when the cell is reused, but if the cell is dealloc'd
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// resuming from PiP won't work because AVPlayerViewController.delegate is a weak reference.
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extension BaseStatusTableViewCell: AVPlayerViewControllerDelegate {
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func playerViewControllerWillStartPictureInPicture(_ playerViewController: AVPlayerViewController) {
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// We need to save the current statusID when PiP is initiated, because if the user restores from PiP after this cell has
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// been reused, the current value of statusID will not be correct.
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currentPictureInPictureVideoStatusID = statusID
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}
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func playerViewControllerDidStopPictureInPicture(_ playerViewController: AVPlayerViewController) {
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currentPictureInPictureVideoStatusID = nil
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}
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func playerViewControllerShouldAutomaticallyDismissAtPictureInPictureStart(_ playerViewController: AVPlayerViewController) -> Bool {
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// Ideally, when PiP is automatically initiated by app closing the gallery should not be dismissed
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// and when PiP is started because the user has tapped the button in the player controls the gallery
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// gallery should be dismissed. Unfortunately, this doesn't seem to be possible. Instead, the gallery is
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// always dismissed and is recreated when restoring the interface from PiP.
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return true
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}
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func playerViewController(_ playerViewController: AVPlayerViewController, restoreUserInterfaceForPictureInPictureStopWithCompletionHandler completionHandler: @escaping (Bool) -> Void) {
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guard let delegate = delegate,
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let playerViewController = playerViewController as? GalleryPlayerViewController,
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let id = currentPictureInPictureVideoStatusID,
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let status = mastodonController.persistentContainer.status(for: id),
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let index = status.attachments.firstIndex(where: { $0.id == playerViewController.attachment?.id }) else {
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// returning without invoking completionHandler will dismiss the PiP window
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return
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}
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// We create a new gallery view controller starting at the appropriate index and swap the
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// already-playing VC into the appropriate index so it smoothly continues playing.
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let sourceViews: [UIImageView?]
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if self.statusID == id {
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sourceViews = status.attachments.map(attachmentsView.getAttachmentView(for:))
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} else {
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sourceViews = status.attachments.map { (_) in nil }
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}
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let gallery = delegate.gallery(attachments: status.attachments, sourceViews: sourceViews, startIndex: index)
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gallery.avPlayerViewControllerDelegate = self
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// ensure that all other page VCs are created
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gallery.loadViewIfNeeded()
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// replace the newly created player for the same attachment with the already-playing one
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gallery.pages[index] = playerViewController
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gallery.setViewControllers([playerViewController], direction: .forward, animated: false, completion: nil)
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// this isn't animated, otherwise the animation plays first and then the PiP window expands
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// which looks even weirder than the black background appearing instantly and then the PiP window animating
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delegate.present(gallery, animated: false) {
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completionHandler(false)
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}
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}
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}
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extension BaseStatusTableViewCell: UIDragInteractionDelegate {
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func dragInteraction(_ interaction: UIDragInteraction, itemsForBeginning session: UIDragSession) -> [UIDragItem] {
|
|
guard let currentAccountID = mastodonController.accountInfo?.id,
|
|
let account = mastodonController.persistentContainer.account(for: accountID) else {
|
|
return []
|
|
}
|
|
let provider = NSItemProvider(object: account.url as NSURL)
|
|
let activity = UserActivityManager.showProfileActivity(id: accountID, accountID: currentAccountID)
|
|
activity.displaysAuxiliaryScene = true
|
|
provider.registerObject(activity, visibility: .all)
|
|
return [UIDragItem(itemProvider: provider)]
|
|
}
|
|
}
|