384 lines
16 KiB
Swift
384 lines
16 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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protocol StatusTableViewCellDelegate: TuskerNavigationDelegate {
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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 visibilityImageView: UIImageView!
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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 attachmentsView: AttachmentsContainerView!
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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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var statusID: String!
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var accountID: String!
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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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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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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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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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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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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!]
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attachmentsView.isAccessibilityElement = true
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NotificationCenter.default.addObserver(self, selector: #selector(preferencesChanged), name: .preferencesChanged, object: nil)
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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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.filter { [unowned self] in $0 == self.statusID }
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.receive(on: DispatchQueue.main)
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.sink { [unowned self] in
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if let status = self.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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.filter { [unowned self] in $0 == self.accountID }
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.receive(on: DispatchQueue.main)
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.sink { [unowned self] in
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if let account = self.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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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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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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updateUIForPreferences(account: account)
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attachmentsView.updateUI(status: status)
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attachmentsView.isAccessibilityElement = status.attachments.count > 0
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attachmentsView.accessibilityLabel = String(format: NSLocalizedString("%d attachments", comment: "status attachments count accessibility label"), status.attachments.count)
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updateStatusState(status: status)
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contentTextView.setTextFrom(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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switch mastodonController.instance?.instanceType {
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case nil:
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// todo: this handle a race condition in instance public timelines
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// a somewhat better solution would be waiting to load the timeline until after the instance is loaded
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reblogDisabled = true
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case .mastodon:
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reblogDisabled = status.visibility == .private || status.visibility == .direct
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case .pleroma:
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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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}
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reblogButton.isEnabled = !reblogDisabled
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updateStatusIconsForPreferences(status)
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if state.unknown {
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collapsible = !status.spoilerText.isEmpty
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var shouldCollapse = collapsible
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if !shouldCollapse,
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let text = contentTextView.text,
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text.count > 500 {
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collapsible = true
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shouldCollapse = true
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}
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if collapsible && showStatusAutomatically {
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shouldCollapse = false
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}
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setCollapsed(shouldCollapse, animated: false)
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state.collapsible = collapsible
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state.collapsed = shouldCollapse
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} else {
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collapsible = state.collapsible!
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setCollapsed(state.collapsed!, animated: false)
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}
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if #available(iOS 14.0, *) {
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moreButton.showsMenuAsPrimaryAction = true
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moreButton.menu = UIMenu(title: "", image: nil, identifier: nil, options: [], children: actionsForStatus(statusID: statusID, sourceView: moreButton))
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}
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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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}
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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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avatarRequest = ImageCache.avatars.get(account.avatar) { [weak self] (data) in
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DispatchQueue.main.async {
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guard let self = self, let data = data, self.accountID == account.id else { return }
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self.avatarImageView.image = UIImage(data: data)
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}
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}
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}
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@objc 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)
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updateStatusIconsForPreferences(status)
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}
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func updateUIForPreferences(account: AccountMO) {
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avatarImageView.layer.cornerRadius = Preferences.shared.avatarStyle.cornerRadius(for: avatarImageView)
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displayNameLabel.updateForAccountDisplayName(account: account)
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attachmentsView.contentHidden = Preferences.shared.blurAllMedia || (mastodonController.persistentContainer.status(for: statusID)?.sensitive ?? false)
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}
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func updateStatusIconsForPreferences(_ status: StatusMO) {
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visibilityImageView.isHidden = !Preferences.shared.alwaysShowStatusVisibilityIcon
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if Preferences.shared.alwaysShowStatusVisibilityIcon {
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visibilityImageView.image = UIImage(systemName: status.visibility.unfilledImageName)
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visibilityImageView.accessibilityLabel = String(format: NSLocalizedString("Visibility: %@", comment: "status visibility indicator accessibility label"), status.visibility.displayName)
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}
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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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override func prepareForReuse() {
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super.prepareForReuse()
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avatarRequest?.cancel()
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attachmentsView.attachmentViews.allObjects.forEach { $0.removeFromSuperview() }
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showStatusAutomatically = false
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}
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@IBAction func collapseButtonPressed() {
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setCollapsed(!collapsed, animated: true)
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delegate?.statusCellCollapsedStateChanged(self)
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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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attachmentsView.isHidden = attachmentsView.attachments.count == 0 || 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?.reply(to: 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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let oldValue = favorited
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favorited = !favorited
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let realStatus = status.reblog ?? status
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let request = (favorited ? Status.favourite : Status.unfavourite)(realStatus.id)
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mastodonController.run(request) { response in
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DispatchQueue.main.async {
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if case let .success(newStatus, _) = response {
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self.favorited = newStatus.favourited ?? false
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self.mastodonController.persistentContainer.addOrUpdate(status: newStatus, incrementReferenceCount: false)
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UIImpactFeedbackGenerator(style: .light).impactOccurred()
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} else {
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self.favorited = oldValue
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print("Couldn't favorite status \(realStatus.id)")
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// todo: display error message
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UINotificationFeedbackGenerator().notificationOccurred(.error)
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return
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}
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}
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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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let oldValue = reblogged
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reblogged = !reblogged
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let realStatus = status.reblog ?? status
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let request = (reblogged ? Status.reblog : Status.unreblog)(realStatus.id)
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mastodonController.run(request) { response in
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DispatchQueue.main.async {
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if case let .success(newStatus, _) = response {
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self.reblogged = newStatus.reblogged ?? false
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self.mastodonController.persistentContainer.addOrUpdate(status: newStatus, incrementReferenceCount: false)
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UIImpactFeedbackGenerator(style: .light).impactOccurred()
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} else {
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self.reblogged = oldValue
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print("Couldn't reblog status \(realStatus.id)")
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// todo: display error message
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UINotificationFeedbackGenerator().notificationOccurred(.error)
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}
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}
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}
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}
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@IBAction func morePressed() {
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delegate?.showMoreOptions(forStatus: statusID, sourceView: 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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func getStatusCellPreviewProviders(for location: CGPoint, sourceViewController: UIViewController) -> PreviewProviders? {
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return nil
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}
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}
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extension BaseStatusTableViewCell: AttachmentViewDelegate {
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func attachmentViewGallery(startingAt index: Int) -> UIViewController {
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guard let status = mastodonController.persistentContainer.status(for: statusID) else { fatalError("Missing cached status \(statusID!)") }
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let sourceViews = status.attachments.map(attachmentsView.getAttachmentView(for:))
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return delegate!.gallery(attachments: status.attachments, sourceViews: sourceViews, startIndex: index)
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}
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func attachmentViewPresent(_ vc: UIViewController, animated: Bool) {
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delegate?.show(vc)
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}
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}
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extension BaseStatusTableViewCell: MenuPreviewProvider {
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var navigationDelegate: TuskerNavigationDelegate? { return delegate }
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func getPreviewProviders(for location: CGPoint, sourceViewController: UIViewController) -> PreviewProviders? {
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guard let mastodonController = mastodonController else { return nil }
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if avatarImageView.frame.contains(location) {
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return (
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content: { ProfileTableViewController(accountID: self.accountID, mastodonController: mastodonController) },
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actions: { self.actionsForProfile(accountID: self.accountID, sourceView: self.avatarImageView) }
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)
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}
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return self.getStatusCellPreviewProviders(for: location, sourceViewController: sourceViewController)
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}
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}
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