623 lines
28 KiB
Swift
623 lines
28 KiB
Swift
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// TODO:
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// • Slight paging glitch when scrolling up and loading more content
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// • Photo rounding (the small corners don't have the correct rounding)
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// • Remaining search glitchiness
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final class ConversationVC : BaseVC, ConversationViewModelDelegate, OWSConversationSettingsViewDelegate, ConversationSearchControllerDelegate, UITableViewDataSource, UITableViewDelegate {
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let thread: TSThread
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let focusedMessageID: String? // This isn't actually used ATM
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var unreadViewItems: [ConversationViewItem] = []
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var scrollButtonConstraint: NSLayoutConstraint?
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// Search
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var isShowingSearchUI = false
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var lastSearchedText: String?
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// Audio playback & recording
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var audioPlayer: OWSAudioPlayer?
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var audioRecorder: AVAudioRecorder?
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var audioTimer: Timer?
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// Context menu
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var contextMenuWindow: ContextMenuWindow?
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var contextMenuVC: ContextMenuVC?
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// Mentions
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var oldText = ""
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var currentMentionStartIndex: String.Index?
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var mentions: [Mention] = []
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// Scrolling & paging
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var isUserScrolling = false
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var didFinishInitialLayout = false
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var isLoadingMore = false
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var scrollDistanceToBottomBeforeUpdate: CGFloat?
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var baselineKeyboardHeight: CGFloat = 0
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var dbConnection: YapDatabaseConnection { OWSPrimaryStorage.shared().uiDatabaseConnection }
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var viewItems: [ConversationViewItem] { viewModel.viewState.viewItems }
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override var canBecomeFirstResponder: Bool { true }
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override var inputAccessoryView: UIView? {
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if let thread = thread as? TSGroupThread, thread.groupModel.groupType == .closedGroup && !thread.isCurrentUserMemberInGroup() {
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return nil
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} else {
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return isShowingSearchUI ? searchController.resultsBar : snInputView
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}
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}
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/// The height of the visible part of the table view, i.e. the distance from the navigation bar (where the table view's origin is)
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/// to the top of the input view (`messagesTableView.adjustedContentInset.bottom`).
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var tableViewUnobscuredHeight: CGFloat {
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let bottomInset = messagesTableView.adjustedContentInset.bottom
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return messagesTableView.bounds.height - bottomInset
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}
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/// The offset at which the table view is exactly scrolled to the bottom.
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var lastPageTop: CGFloat {
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return messagesTableView.contentSize.height - tableViewUnobscuredHeight
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}
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var isCloseToBottom: Bool {
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let margin = (self.lastPageTop - self.messagesTableView.contentOffset.y)
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return margin <= ConversationVC.scrollToBottomMargin
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}
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lazy var mnemonic: String = {
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let identityManager = OWSIdentityManager.shared()
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let databaseConnection = identityManager.value(forKey: "dbConnection") as! YapDatabaseConnection
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var hexEncodedSeed: String! = databaseConnection.object(forKey: "LKLokiSeed", inCollection: OWSPrimaryStorageIdentityKeyStoreCollection) as! String?
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if hexEncodedSeed == nil {
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hexEncodedSeed = identityManager.identityKeyPair()!.hexEncodedPrivateKey // Legacy account
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}
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return Mnemonic.encode(hexEncodedString: hexEncodedSeed)
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}()
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lazy var viewModel = ConversationViewModel(thread: thread, focusMessageIdOnOpen: focusedMessageID, delegate: self)
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lazy var mediaCache: NSCache<NSString, AnyObject> = {
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let result = NSCache<NSString, AnyObject>()
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result.countLimit = 40
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return result
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}()
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lazy var recordVoiceMessageActivity = AudioActivity(audioDescription: "Voice message", behavior: .playAndRecord)
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lazy var searchController: ConversationSearchController = {
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let result = ConversationSearchController(thread: thread)
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result.delegate = self
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if #available(iOS 13, *) {
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result.uiSearchController.obscuresBackgroundDuringPresentation = false
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} else {
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result.uiSearchController.dimsBackgroundDuringPresentation = false
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}
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return result
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}()
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// MARK: UI Components
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lazy var titleView: ConversationTitleView = {
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let result = ConversationTitleView(thread: thread)
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result.delegate = self
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return result
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}()
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lazy var messagesTableView: MessagesTableView = {
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let result = MessagesTableView()
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result.dataSource = self
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result.delegate = self
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return result
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}()
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lazy var snInputView = InputView(delegate: self)
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lazy var unreadCountView: UIView = {
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let result = UIView()
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result.backgroundColor = Colors.text.withAlphaComponent(Values.veryLowOpacity)
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let size = ConversationVC.unreadCountViewSize
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result.set(.width, to: size)
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result.set(.height, to: size)
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result.layer.masksToBounds = true
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result.layer.cornerRadius = size / 2
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return result
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}()
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lazy var unreadCountLabel: UILabel = {
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let result = UILabel()
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result.font = .boldSystemFont(ofSize: Values.verySmallFontSize)
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result.textColor = Colors.text
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result.textAlignment = .center
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return result
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}()
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lazy var scrollButton = ScrollToBottomButton(delegate: self)
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lazy var blockedBanner: InfoBanner = {
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let name: String
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if let thread = thread as? TSContactThread {
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let publicKey = thread.contactSessionID()
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let context = Contact.context(for: thread)
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name = Storage.shared.getContact(with: publicKey)?.displayName(for: context) ?? publicKey
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} else {
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name = "Thread"
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}
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let message = "\(name) is blocked. Unblock them?"
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let result = InfoBanner(message: message, backgroundColor: Colors.destructive)
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let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(unblock))
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result.addGestureRecognizer(tapGestureRecognizer)
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return result
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}()
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// MARK: Settings
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static let unreadCountViewSize: CGFloat = 20
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/// The table view's bottom inset (content will have this distance to the bottom if the table view is fully scrolled down).
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static let bottomInset = Values.mediumSpacing
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/// The table view will start loading more content when the content offset becomes less than this.
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static let loadMoreThreshold: CGFloat = 120
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/// The button will be fully visible once the user has scrolled this amount from the bottom of the table view.
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static let scrollButtonFullVisibilityThreshold: CGFloat = 80
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/// The button will be invisible until the user has scrolled at least this amount from the bottom of the table view.
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static let scrollButtonNoVisibilityThreshold: CGFloat = 20
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/// Automatically scroll to the bottom of the conversation when sending a message if the scroll distance from the bottom is less than this number.
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static let scrollToBottomMargin: CGFloat = 60
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// MARK: Lifecycle
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init(thread: TSThread, focusedMessageID: String? = nil) {
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self.thread = thread
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self.focusedMessageID = focusedMessageID
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super.init(nibName: nil, bundle: nil)
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var unreadCount: UInt = 0
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Storage.read { transaction in
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unreadCount = self.thread.unreadMessageCount(transaction: transaction)
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}
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let clampedUnreadCount = min(unreadCount, UInt(kConversationInitialMaxRangeSize))
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unreadViewItems = clampedUnreadCount != 0 ? [ConversationViewItem](viewItems[viewItems.endIndex - Int(clampedUnreadCount) ..< viewItems.endIndex]) : []
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}
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required init?(coder: NSCoder) {
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preconditionFailure("Use init(thread:) instead.")
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}
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override func viewDidLoad() {
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super.viewDidLoad()
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// Gradient
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setUpGradientBackground()
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// Nav bar
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setUpNavBarStyle()
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navigationItem.titleView = titleView
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updateNavBarButtons()
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// Constraints
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view.addSubview(messagesTableView)
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messagesTableView.pin(to: view)
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view.addSubview(scrollButton)
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scrollButton.pin(.right, to: .right, of: view, withInset: -16)
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scrollButtonConstraint = scrollButton.pin(.bottom, to: .bottom, of: view, withInset: -16)
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// Unread count view
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view.addSubview(unreadCountView)
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unreadCountView.addSubview(unreadCountLabel)
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unreadCountLabel.pin(to: unreadCountView)
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unreadCountView.centerYAnchor.constraint(equalTo: scrollButton.topAnchor).isActive = true
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unreadCountView.center(.horizontal, in: scrollButton)
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updateUnreadCountView()
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// Blocked banner
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addOrRemoveBlockedBanner()
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// Notifications
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let notificationCenter = NotificationCenter.default
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notificationCenter.addObserver(self, selector: #selector(handleKeyboardWillChangeFrameNotification(_:)), name: UIResponder.keyboardWillChangeFrameNotification, object: nil)
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notificationCenter.addObserver(self, selector: #selector(handleKeyboardWillHideNotification(_:)), name: UIResponder.keyboardWillHideNotification, object: nil)
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notificationCenter.addObserver(self, selector: #selector(handleAudioDidFinishPlayingNotification(_:)), name: .SNAudioDidFinishPlaying, object: nil)
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notificationCenter.addObserver(self, selector: #selector(addOrRemoveBlockedBanner), name: NSNotification.Name(rawValue: kNSNotificationName_BlockListDidChange), object: nil)
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notificationCenter.addObserver(self, selector: #selector(handleGroupUpdatedNotification), name: .groupThreadUpdated, object: nil)
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notificationCenter.addObserver(self, selector: #selector(sendScreenshotNotificationIfNeeded), name: UIApplication.userDidTakeScreenshotNotification, object: nil)
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notificationCenter.addObserver(self, selector: #selector(handleMessageSentStatusChanged), name: .messageSentStatusDidChange, object: nil)
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// Mentions
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MentionsManager.populateUserPublicKeyCacheIfNeeded(for: thread.uniqueId!)
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// Draft
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var draft = ""
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Storage.read { transaction in
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draft = self.thread.currentDraft(with: transaction)
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}
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if !draft.isEmpty {
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snInputView.text = draft
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}
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// Update member count if this is a V2 open group
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if let v2OpenGroup = Storage.shared.getV2OpenGroup(for: thread.uniqueId!) {
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OpenGroupAPIV2.getMemberCount(for: v2OpenGroup.room, on: v2OpenGroup.server).retainUntilComplete()
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}
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}
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override func viewDidLayoutSubviews() {
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super.viewDidLayoutSubviews()
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if !didFinishInitialLayout {
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// Scroll to the last unread message if possible; otherwise scroll to the bottom.
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var unreadCount: UInt = 0
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Storage.read { transaction in
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unreadCount = self.thread.unreadMessageCount(transaction: transaction)
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}
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// When the unread message count is more than the number of view items of a page,
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// the screen will scroll to the bottom instead of the first unread message.
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// unreadIndicatorIndex is calculated during loading of the viewItems, so it's
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// supposed to be accurate.
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DispatchQueue.main.async {
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let firstUnreadMessageIndex = self.viewModel.viewState.unreadIndicatorIndex?.intValue
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?? (self.viewItems.count - self.unreadViewItems.count)
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if unreadCount > 0, let viewItem = self.viewItems[ifValid: firstUnreadMessageIndex], let interactionID = viewItem.interaction.uniqueId {
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self.scrollToInteraction(with: interactionID, position: .top, isAnimated: false)
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self.unreadCountView.alpha = self.scrollButton.alpha
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} else {
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self.scrollToBottom(isAnimated: false)
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}
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self.scrollButton.alpha = self.getScrollButtonOpacity()
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}
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}
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}
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override func viewDidAppear(_ animated: Bool) {
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super.viewDidAppear(animated)
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didFinishInitialLayout = true
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markAllAsRead()
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}
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override func viewWillDisappear(_ animated: Bool) {
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super.viewWillDisappear(animated)
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let text = snInputView.text
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if !text.isEmpty {
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Storage.write { transaction in
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self.thread.setDraft(text, transaction: transaction)
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}
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}
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inputAccessoryView?.resignFirstResponder()
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}
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override func viewDidDisappear(_ animated: Bool) {
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super.viewDidDisappear(animated)
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mediaCache.removeAllObjects()
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}
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deinit {
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NotificationCenter.default.removeObserver(self)
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}
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// MARK: Table View Data Source
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func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
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return viewItems.count
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}
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func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
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let viewItem = viewItems[indexPath.row]
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let cell = tableView.dequeueReusableCell(withIdentifier: MessageCell.getCellType(for: viewItem).identifier) as! MessageCell
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cell.delegate = self
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cell.viewItem = viewItem
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return cell
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}
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// MARK: Updating
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func updateNavBarButtons() {
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navigationItem.hidesBackButton = isShowingSearchUI
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if isShowingSearchUI {
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navigationItem.rightBarButtonItems = []
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} else {
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let rightBarButtonItem: UIBarButtonItem
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if thread is TSContactThread {
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let size = Values.verySmallProfilePictureSize
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let profilePictureView = ProfilePictureView()
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profilePictureView.accessibilityLabel = "Settings button"
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profilePictureView.size = size
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profilePictureView.update(for: thread)
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profilePictureView.set(.width, to: size)
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profilePictureView.set(.height, to: size)
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let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(openSettings))
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profilePictureView.addGestureRecognizer(tapGestureRecognizer)
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rightBarButtonItem = UIBarButtonItem(customView: profilePictureView)
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} else {
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rightBarButtonItem = UIBarButtonItem(image: UIImage(named: "Gear"), style: .plain, target: self, action: #selector(openSettings))
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}
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rightBarButtonItem.accessibilityLabel = "Settings button"
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rightBarButtonItem.isAccessibilityElement = true
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navigationItem.rightBarButtonItem = rightBarButtonItem
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}
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}
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@objc func handleKeyboardWillChangeFrameNotification(_ notification: Notification) {
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guard let newHeight = (notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue.size.height else { return }
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if (newHeight > 0 && baselineKeyboardHeight == 0) {
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baselineKeyboardHeight = newHeight
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self.messagesTableView.keyboardHeight = newHeight
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}
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scrollButtonConstraint?.constant = -(newHeight + 16)
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let newContentOffsetY = max(self.messagesTableView.contentOffset.y + min(lastPageTop, 0) + newHeight - self.messagesTableView.keyboardHeight, 0.0)
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self.messagesTableView.contentOffset.y = newContentOffsetY
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self.messagesTableView.keyboardHeight = newHeight
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self.scrollButton.alpha = self.getScrollButtonOpacity()
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}
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@objc func handleKeyboardWillHideNotification(_ notification: Notification) {
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self.messagesTableView.contentOffset.y -= (self.messagesTableView.keyboardHeight - self.baselineKeyboardHeight)
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self.messagesTableView.keyboardHeight = self.baselineKeyboardHeight
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scrollButtonConstraint?.constant = -(self.baselineKeyboardHeight + 16)
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self.scrollButton.alpha = self.getScrollButtonOpacity()
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self.unreadCountView.alpha = self.scrollButton.alpha
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}
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func conversationViewModelWillUpdate() {
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// Not currently in use
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}
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func conversationViewModelDidUpdate(_ conversationUpdate: ConversationUpdate) {
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guard self.isViewLoaded else { return }
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let updateType = conversationUpdate.conversationUpdateType
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guard updateType != .minor else { return } // No view items were affected
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if updateType == .reload {
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return messagesTableView.reloadData()
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}
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var shouldScrollToBottom = false
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let batchUpdates: () -> Void = {
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for update in conversationUpdate.updateItems! {
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switch update.updateItemType {
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case .delete:
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self.messagesTableView.deleteRows(at: [ IndexPath(row: Int(update.oldIndex), section: 0) ], with: .none)
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case .insert:
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// Perform inserts before updates
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self.messagesTableView.insertRows(at: [ IndexPath(row: Int(update.newIndex), section: 0) ], with: .none)
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if update.viewItem?.interaction is TSOutgoingMessage {
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shouldScrollToBottom = true
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} else {
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shouldScrollToBottom = self.isCloseToBottom
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}
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case .update:
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self.messagesTableView.reloadRows(at: [ IndexPath(row: Int(update.oldIndex), section: 0) ], with: .none)
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default: preconditionFailure()
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}
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}
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}
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UIView.performWithoutAnimation {
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messagesTableView.performBatchUpdates(batchUpdates) { _ in
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if shouldScrollToBottom {
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self.scrollToBottom(isAnimated: false)
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}
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self.markAllAsRead()
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}
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if shouldScrollToBottom {
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self.scrollToBottom(isAnimated: false)
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}
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}
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}
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func conversationViewModelWillLoadMoreItems() {
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view.layoutIfNeeded()
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// The scroll distance to bottom will be restored in conversationViewModelDidLoadMoreItems
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scrollDistanceToBottomBeforeUpdate = messagesTableView.contentSize.height - messagesTableView.contentOffset.y
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}
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func conversationViewModelDidLoadMoreItems() {
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guard let scrollDistanceToBottomBeforeUpdate = scrollDistanceToBottomBeforeUpdate else { return }
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view.layoutIfNeeded()
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messagesTableView.contentOffset.y = messagesTableView.contentSize.height - scrollDistanceToBottomBeforeUpdate
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isLoadingMore = false
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}
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func conversationViewModelDidLoadPrevPage() {
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// Not currently in use
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}
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func conversationViewModelRangeDidChange() {
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// Not currently in use
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}
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func conversationViewModelDidReset() {
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// Not currently in use
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}
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@objc private func handleGroupUpdatedNotification() {
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thread.reload() // Needed so that thread.isCurrentUserMemberInGroup() is up to date
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reloadInputViews()
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}
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@objc private func handleMessageSentStatusChanged() {
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DispatchQueue.main.async {
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guard let indexPaths = self.messagesTableView.indexPathsForVisibleRows else { return }
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var indexPathsToReload: [IndexPath] = []
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for indexPath in indexPaths {
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guard let cell = self.messagesTableView.cellForRow(at: indexPath) as? VisibleMessageCell else { continue }
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let isLast = (indexPath.item == (self.messagesTableView.numberOfRows(inSection: 0) - 1))
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guard !isLast else { continue }
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if !cell.messageStatusImageView.isHidden {
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indexPathsToReload.append(indexPath)
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}
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}
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UIView.performWithoutAnimation {
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self.messagesTableView.reloadRows(at: indexPathsToReload, with: .none)
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}
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}
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}
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// MARK: General
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@objc func addOrRemoveBlockedBanner() {
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func detach() {
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blockedBanner.removeFromSuperview()
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}
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guard let thread = thread as? TSContactThread else { return detach() }
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if OWSBlockingManager.shared().isRecipientIdBlocked(thread.contactSessionID()) {
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view.addSubview(blockedBanner)
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blockedBanner.pin([ UIView.HorizontalEdge.left, UIView.VerticalEdge.top, UIView.HorizontalEdge.right ], to: view)
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} else {
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detach()
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}
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}
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func markAllAsRead() {
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guard let lastSortID = viewItems.last?.interaction.sortId else { return }
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OWSReadReceiptManager.shared().markAsReadLocally(beforeSortId: lastSortID, thread: thread)
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}
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func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
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return UITableView.automaticDimension
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}
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func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
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return UITableView.automaticDimension
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}
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|
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func getMediaCache() -> NSCache<NSString, AnyObject> {
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return mediaCache
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}
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|
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func scrollToBottom(isAnimated: Bool) {
|
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guard !isUserScrolling else { return }
|
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// Ensure the view is fully up to date before we try to scroll to the bottom, since
|
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// we use the table view's bounds to determine where the bottom is.
|
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view.layoutIfNeeded()
|
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let firstContentPageTop: CGFloat = 0
|
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let contentOffsetY = max(firstContentPageTop, lastPageTop)
|
|
messagesTableView.setContentOffset(CGPoint(x: 0, y: contentOffsetY), animated: isAnimated)
|
|
}
|
|
|
|
func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {
|
|
isUserScrolling = true
|
|
}
|
|
|
|
func scrollViewDidEndDragging(_ scrollView: UIScrollView, willDecelerate decelerate: Bool) {
|
|
isUserScrolling = false
|
|
}
|
|
|
|
func scrollViewDidScroll(_ scrollView: UIScrollView) {
|
|
scrollButton.alpha = getScrollButtonOpacity()
|
|
unreadCountView.alpha = scrollButton.alpha
|
|
autoLoadMoreIfNeeded()
|
|
updateUnreadCountView()
|
|
}
|
|
|
|
func updateUnreadCountView() {
|
|
let visibleViewItems = (messagesTableView.indexPathsForVisibleRows ?? []).map { viewItems[$0.row] }
|
|
for visibleItem in visibleViewItems {
|
|
guard let index = unreadViewItems.firstIndex(where: { $0 === visibleItem }) else { continue }
|
|
unreadViewItems.remove(at: index)
|
|
}
|
|
let unreadCount = unreadViewItems.count
|
|
unreadCountLabel.text = unreadCount < 100 ? "\(unreadCount)" : "99+"
|
|
let fontSize = (unreadCount < 100) ? Values.verySmallFontSize : 8
|
|
unreadCountLabel.font = .boldSystemFont(ofSize: fontSize)
|
|
unreadCountView.isHidden = (unreadCount == 0)
|
|
}
|
|
|
|
func autoLoadMoreIfNeeded() {
|
|
let isMainAppAndActive = CurrentAppContext().isMainAppAndActive
|
|
guard isMainAppAndActive && viewModel.canLoadMoreItems() && !isLoadingMore
|
|
&& messagesTableView.contentOffset.y < ConversationVC.loadMoreThreshold else { return }
|
|
isLoadingMore = true
|
|
viewModel.loadAnotherPageOfMessages()
|
|
}
|
|
|
|
func getScrollButtonOpacity() -> CGFloat {
|
|
let contentOffsetY = messagesTableView.contentOffset.y
|
|
let x = (lastPageTop - ConversationVC.bottomInset - contentOffsetY).clamp(0, .greatestFiniteMagnitude)
|
|
let a = 1 / (ConversationVC.scrollButtonFullVisibilityThreshold - ConversationVC.scrollButtonNoVisibilityThreshold)
|
|
return a * x
|
|
}
|
|
|
|
func groupWasUpdated(_ groupModel: TSGroupModel) {
|
|
// Not currently in use
|
|
}
|
|
|
|
// MARK: Search
|
|
func conversationSettingsDidRequestConversationSearch(_ conversationSettingsViewController: OWSConversationSettingsViewController) {
|
|
showSearchUI()
|
|
popAllConversationSettingsViews {
|
|
DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) { // Without this delay the search bar doesn't show
|
|
self.searchController.uiSearchController.searchBar.becomeFirstResponder()
|
|
}
|
|
}
|
|
}
|
|
|
|
func popAllConversationSettingsViews(completion completionBlock: (() -> Void)? = nil) {
|
|
if presentedViewController != nil {
|
|
dismiss(animated: true) {
|
|
self.navigationController!.popToViewController(self, animated: true, completion: completionBlock)
|
|
}
|
|
} else {
|
|
navigationController!.popToViewController(self, animated: true, completion: completionBlock)
|
|
}
|
|
}
|
|
|
|
func showSearchUI() {
|
|
isShowingSearchUI = true
|
|
// Search bar
|
|
let searchBar = searchController.uiSearchController.searchBar
|
|
searchBar.searchBarStyle = .minimal
|
|
searchBar.barStyle = .black
|
|
searchBar.tintColor = Colors.accent
|
|
let searchIcon = UIImage(named: "searchbar_search")!.asTintedImage(color: Colors.searchBarPlaceholder)
|
|
searchBar.setImage(searchIcon, for: .search, state: UIControl.State.normal)
|
|
let clearIcon = UIImage(named: "searchbar_clear")!.asTintedImage(color: Colors.searchBarPlaceholder)
|
|
searchBar.setImage(clearIcon, for: .clear, state: UIControl.State.normal)
|
|
let searchTextField: UITextField
|
|
if #available(iOS 13, *) {
|
|
searchTextField = searchBar.searchTextField
|
|
} else {
|
|
searchTextField = searchBar.value(forKey: "_searchField") as! UITextField
|
|
}
|
|
searchTextField.backgroundColor = Colors.searchBarBackground
|
|
searchTextField.textColor = Colors.text
|
|
searchTextField.attributedPlaceholder = NSAttributedString(string: "Search", attributes: [ .foregroundColor : Colors.searchBarPlaceholder ])
|
|
searchTextField.keyboardAppearance = isLightMode ? .default : .dark
|
|
searchBar.setPositionAdjustment(UIOffset(horizontal: 4, vertical: 0), for: .search)
|
|
searchBar.searchTextPositionAdjustment = UIOffset(horizontal: 2, vertical: 0)
|
|
searchBar.setPositionAdjustment(UIOffset(horizontal: -4, vertical: 0), for: .clear)
|
|
navigationItem.titleView = searchBar
|
|
// Nav bar buttons
|
|
updateNavBarButtons()
|
|
// Hack so that the ResultsBar stays on the screen when dismissing the search field
|
|
// keyboard.
|
|
//
|
|
// Details:
|
|
//
|
|
// When the search UI is activated, both the SearchField and the ConversationVC
|
|
// have the resultsBar as their inputAccessoryView.
|
|
//
|
|
// So when the SearchField is first responder, the ResultsBar is shown on top of the keyboard.
|
|
// When the ConversationVC is first responder, the ResultsBar is shown at the bottom of the
|
|
// screen.
|
|
//
|
|
// When the user swipes to dismiss the keyboard, trying to see more of the content while
|
|
// searching, we want the ResultsBar to stay at the bottom of the screen - that is, we
|
|
// want the ConversationVC to becomeFirstResponder.
|
|
//
|
|
// If the SearchField were a subview of ConversationVC.view, this would all be automatic,
|
|
// as first responder status is percolated up the responder chain via `nextResponder`, which
|
|
// basically travereses each superView, until you're at a rootView, at which point the next
|
|
// responder is the ViewController which controls that View.
|
|
//
|
|
// However, because SearchField lives in the Navbar, it's "controlled" by the
|
|
// NavigationController, not the ConversationVC.
|
|
//
|
|
// So here we stub the next responder on the navBar so that when the searchBar resigns
|
|
// first responder, the ConversationVC will be in it's responder chain - keeeping the
|
|
// ResultsBar on the bottom of the screen after dismissing the keyboard.
|
|
let navBar = navigationController!.navigationBar as! OWSNavigationBar
|
|
navBar.stubbedNextResponder = self
|
|
}
|
|
|
|
func hideSearchUI() {
|
|
isShowingSearchUI = false
|
|
navigationItem.titleView = titleView
|
|
updateNavBarButtons()
|
|
let navBar = navigationController!.navigationBar as! OWSNavigationBar
|
|
navBar.stubbedNextResponder = nil
|
|
becomeFirstResponder()
|
|
reloadInputViews()
|
|
}
|
|
|
|
func didDismissSearchController(_ searchController: UISearchController) {
|
|
hideSearchUI()
|
|
}
|
|
|
|
func conversationSearchController(_ conversationSearchController: ConversationSearchController, didUpdateSearchResults resultSet: ConversationScreenSearchResultSet?) {
|
|
lastSearchedText = resultSet?.searchText
|
|
messagesTableView.reloadRows(at: messagesTableView.indexPathsForVisibleRows ?? [], with: UITableView.RowAnimation.none)
|
|
}
|
|
|
|
func conversationSearchController(_ conversationSearchController: ConversationSearchController, didSelectMessageId interactionID: String) {
|
|
scrollToInteraction(with: interactionID)
|
|
}
|
|
|
|
func scrollToInteraction(with interactionID: String, position: UITableView.ScrollPosition = .middle, isAnimated: Bool = true) {
|
|
guard let indexPath = viewModel.ensureLoadWindowContainsInteractionId(interactionID) else { return }
|
|
messagesTableView.scrollToRow(at: indexPath, at: position, animated: isAnimated)
|
|
}
|
|
}
|