session-ios/Session/Conversations/ConversationVC.swift
Morgan Pretty a1b4554cdb Migrated the SessionSnodeKit from YapDatabase to GRDB
Changed the min OS version to iOS 13.0 (support for 'Identifiable')
Removed the alternate approaches to fetching the userKeyPair and userPublicKeyHexString (no consistently routed through the caching method)
Migrated the 'OWSIdentityManager' logic to use the new 'Identity' type
Added the 'Setting' table and got the pattern working fairly nicely (unfortunately there isn't a good way to avoid key collision without proper enums)
Updated the SessionSnodeKit to migration it's data from YDB to GRDB
Updated the SessionSnodeKit to use GRDB throughout it's logic
2022-04-01 17:22:45 +11:00

900 lines
41 KiB
Swift

// Copyright © 2022 Rangeproof Pty Ltd. All rights reserved.
import UIKit
import SessionUIKit
import SessionMessagingKit
import SessionUtilitiesKit
// TODO:
// Slight paging glitch when scrolling up and loading more content
// Photo rounding (the small corners don't have the correct rounding)
// Remaining search glitchiness
final class ConversationVC : BaseVC, ConversationViewModelDelegate, OWSConversationSettingsViewDelegate, ConversationSearchControllerDelegate, UITableViewDataSource, UITableViewDelegate {
let thread: TSThread
let threadStartedAsMessageRequest: Bool
let focusedMessageID: String? // This is used for global search
var focusedMessageIndexPath: IndexPath?
var initialUnreadCount: UInt = 0
var unreadViewItems: [ConversationViewItem] = []
var scrollButtonBottomConstraint: NSLayoutConstraint?
var scrollButtonMessageRequestsBottomConstraint: NSLayoutConstraint?
var messageRequestsViewBotomConstraint: NSLayoutConstraint?
// Search
var isShowingSearchUI = false
var lastSearchedText: String?
// Audio playback & recording
var audioPlayer: OWSAudioPlayer?
var audioRecorder: AVAudioRecorder?
var audioTimer: Timer?
// Context menu
var contextMenuWindow: ContextMenuWindow?
var contextMenuVC: ContextMenuVC?
// Mentions
var oldText = ""
var currentMentionStartIndex: String.Index?
var mentions: [Mention] = []
// Scrolling & paging
var isUserScrolling = false
var didFinishInitialLayout = false
var isLoadingMore = false
var scrollDistanceToBottomBeforeUpdate: CGFloat?
var baselineKeyboardHeight: CGFloat = 0
var audioSession: OWSAudioSession { Environment.shared.audioSession }
var dbConnection: YapDatabaseConnection { OWSPrimaryStorage.shared().uiDatabaseConnection }
var viewItems: [ConversationViewItem] { viewModel.viewState.viewItems }
override var canBecomeFirstResponder: Bool { true }
override var inputAccessoryView: UIView? {
if let thread = thread as? TSGroupThread, thread.groupModel.groupType == .closedGroup && !thread.isCurrentUserMemberInGroup() {
return nil
} else {
return isShowingSearchUI ? searchController.resultsBar : snInputView
}
}
/// 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)
/// to the top of the input view (`messagesTableView.adjustedContentInset.bottom`).
var tableViewUnobscuredHeight: CGFloat {
let bottomInset = messagesTableView.adjustedContentInset.bottom
return messagesTableView.bounds.height - bottomInset
}
/// The offset at which the table view is exactly scrolled to the bottom.
var lastPageTop: CGFloat {
return messagesTableView.contentSize.height - tableViewUnobscuredHeight
}
var isCloseToBottom: Bool {
let margin = (self.lastPageTop - self.messagesTableView.contentOffset.y)
return margin <= ConversationVC.scrollToBottomMargin
}
lazy var mnemonic: String = {
if let hexEncodedSeed: String = Identity.fetchHexEncodedSeed() {
return Mnemonic.encode(hexEncodedString: hexEncodedSeed)
}
// Legacy account
return Mnemonic.encode(hexEncodedString: Identity.fetchUserKeyPair()!.hexEncodedPrivateKey)
}()
lazy var viewModel = ConversationViewModel(thread: thread, focusMessageIdOnOpen: nil, delegate: self)
lazy var mediaCache: NSCache<NSString, AnyObject> = {
let result = NSCache<NSString, AnyObject>()
result.countLimit = 40
return result
}()
lazy var recordVoiceMessageActivity = AudioActivity(audioDescription: "Voice message", behavior: .playAndRecord)
lazy var searchController: ConversationSearchController = {
let result = ConversationSearchController(thread: thread)
result.delegate = self
if #available(iOS 13, *) {
result.uiSearchController.obscuresBackgroundDuringPresentation = false
} else {
result.uiSearchController.dimsBackgroundDuringPresentation = false
}
return result
}()
// MARK: - UI
private static let messageRequestButtonHeight: CGFloat = 34
lazy var titleView: ConversationTitleView = {
let result = ConversationTitleView(thread: thread)
result.delegate = self
return result
}()
lazy var messagesTableView: MessagesTableView = {
let result: MessagesTableView = MessagesTableView()
result.dataSource = self
result.delegate = self
result.contentInsetAdjustmentBehavior = .never
result.contentInset = UIEdgeInsets(
top: 0,
leading: 0,
bottom: Values.mediumSpacing,
trailing: 0
)
return result
}()
lazy var snInputView: InputView = InputView(delegate: self)
lazy var unreadCountView: UIView = {
let result = UIView()
result.backgroundColor = Colors.text.withAlphaComponent(Values.veryLowOpacity)
let size = ConversationVC.unreadCountViewSize
result.set(.width, greaterThanOrEqualTo: size)
result.set(.height, to: size)
result.layer.masksToBounds = true
result.layer.cornerRadius = size / 2
return result
}()
lazy var unreadCountLabel: UILabel = {
let result = UILabel()
result.font = .boldSystemFont(ofSize: Values.verySmallFontSize)
result.textColor = Colors.text
result.textAlignment = .center
return result
}()
lazy var blockedBanner: InfoBanner = {
let name: String
if let thread = thread as? TSContactThread {
let publicKey = thread.contactSessionID()
let context = Contact.context(for: thread)
name = Storage.shared.getContact(with: publicKey)?.displayName(for: context) ?? publicKey
} else {
name = "Thread"
}
let message = "\(name) is blocked. Unblock them?"
let result = InfoBanner(message: message, backgroundColor: Colors.destructive)
let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(unblock))
result.addGestureRecognizer(tapGestureRecognizer)
return result
}()
lazy var footerControlsStackView: UIStackView = {
let result: UIStackView = UIStackView()
result.translatesAutoresizingMaskIntoConstraints = false
result.axis = .vertical
result.alignment = .trailing
result.distribution = .equalSpacing
result.spacing = 10
result.layoutMargins = UIEdgeInsets(top: 0, left: 20, bottom: 0, right: 20)
result.isLayoutMarginsRelativeArrangement = true
return result
}()
lazy var scrollButton = ScrollToBottomButton(delegate: self)
lazy var messageRequestView: UIView = {
let result: UIView = UIView()
result.translatesAutoresizingMaskIntoConstraints = false
result.isHidden = !thread.isMessageRequest()
result.setGradient(Gradients.defaultBackground)
return result
}()
private let messageRequestDescriptionLabel: UILabel = {
let result: UILabel = UILabel()
result.translatesAutoresizingMaskIntoConstraints = false
result.font = UIFont.systemFont(ofSize: 12)
result.text = NSLocalizedString("MESSAGE_REQUESTS_INFO", comment: "")
result.textColor = Colors.sessionMessageRequestsInfoText
result.textAlignment = .center
result.numberOfLines = 2
return result
}()
private let messageRequestAcceptButton: UIButton = {
let result: UIButton = UIButton()
result.translatesAutoresizingMaskIntoConstraints = false
result.clipsToBounds = true
result.titleLabel?.font = UIFont.boldSystemFont(ofSize: 18)
result.setTitle(NSLocalizedString("TXT_DELETE_ACCEPT", comment: ""), for: .normal)
result.setTitleColor(Colors.sessionHeading, for: .normal)
result.setBackgroundImage(
Colors.sessionHeading
.withAlphaComponent(isDarkMode ? 0.2 : 0.06)
.toImage(isDarkMode: isDarkMode),
for: .highlighted
)
result.layer.cornerRadius = (ConversationVC.messageRequestButtonHeight / 2)
result.layer.borderColor = {
if #available(iOS 13.0, *) {
return Colors.sessionHeading
.resolvedColor(
// Note: This is needed for '.cgColor' to support dark mode
with: UITraitCollection(userInterfaceStyle: isDarkMode ? .dark : .light)
).cgColor
}
return Colors.sessionHeading.cgColor
}()
result.layer.borderWidth = 1
result.addTarget(self, action: #selector(acceptMessageRequest), for: .touchUpInside)
return result
}()
private let messageRequestDeleteButton: UIButton = {
let result: UIButton = UIButton()
result.translatesAutoresizingMaskIntoConstraints = false
result.clipsToBounds = true
result.titleLabel?.font = UIFont.boldSystemFont(ofSize: 18)
result.setTitle(NSLocalizedString("TXT_DELETE_TITLE", comment: ""), for: .normal)
result.setTitleColor(Colors.destructive, for: .normal)
result.setBackgroundImage(
Colors.destructive
.withAlphaComponent(isDarkMode ? 0.2 : 0.06)
.toImage(isDarkMode: isDarkMode),
for: .highlighted
)
result.layer.cornerRadius = (ConversationVC.messageRequestButtonHeight / 2)
result.layer.borderColor = {
if #available(iOS 13.0, *) {
return Colors.destructive
.resolvedColor(
// Note: This is needed for '.cgColor' to support dark mode
with: UITraitCollection(userInterfaceStyle: isDarkMode ? .dark : .light)
).cgColor
}
return Colors.destructive.cgColor
}()
result.layer.borderWidth = 1
result.addTarget(self, action: #selector(deleteMessageRequest), for: .touchUpInside)
return result
}()
// MARK: Settings
static let unreadCountViewSize: CGFloat = 20
/// The table view's bottom inset (content will have this distance to the bottom if the table view is fully scrolled down).
static let bottomInset = Values.mediumSpacing
/// The table view will start loading more content when the content offset becomes less than this.
static let loadMoreThreshold: CGFloat = 120
/// The button will be fully visible once the user has scrolled this amount from the bottom of the table view.
static let scrollButtonFullVisibilityThreshold: CGFloat = 80
/// The button will be invisible until the user has scrolled at least this amount from the bottom of the table view.
static let scrollButtonNoVisibilityThreshold: CGFloat = 20
/// Automatically scroll to the bottom of the conversation when sending a message if the scroll distance from the bottom is less than this number.
static let scrollToBottomMargin: CGFloat = 60
// MARK: Lifecycle
init(thread: TSThread, focusedMessageID: String? = nil) {
self.thread = thread
self.threadStartedAsMessageRequest = thread.isMessageRequest()
self.focusedMessageID = focusedMessageID
super.init(nibName: nil, bundle: nil)
Storage.read { transaction in
self.initialUnreadCount = self.thread.unreadMessageCount(transaction: transaction)
}
let clampedUnreadCount = min(self.initialUnreadCount, UInt(kConversationInitialMaxRangeSize), UInt(viewItems.endIndex))
unreadViewItems = clampedUnreadCount != 0 ? [ConversationViewItem](viewItems[viewItems.endIndex - Int(clampedUnreadCount) ..< viewItems.endIndex]) : []
}
required init?(coder: NSCoder) {
preconditionFailure("Use init(thread:) instead.")
}
override func viewDidLoad() {
super.viewDidLoad()
// Gradient
setUpGradientBackground()
// Nav bar
setUpNavBarStyle()
navigationItem.titleView = titleView
updateNavBarButtons()
// Constraints
view.addSubview(messagesTableView)
messagesTableView.pin(to: view)
// Blocked banner
addOrRemoveBlockedBanner()
// Message requests view & scroll to bottom
view.addSubview(scrollButton)
view.addSubview(messageRequestView)
messageRequestView.addSubview(messageRequestDescriptionLabel)
messageRequestView.addSubview(messageRequestAcceptButton)
messageRequestView.addSubview(messageRequestDeleteButton)
scrollButton.pin(.right, to: .right, of: view, withInset: -20)
messageRequestView.pin(.left, to: .left, of: view)
messageRequestView.pin(.right, to: .right, of: view)
self.messageRequestsViewBotomConstraint = messageRequestView.pin(.bottom, to: .bottom, of: view, withInset: -16)
self.scrollButtonBottomConstraint = scrollButton.pin(.bottom, to: .bottom, of: view, withInset: -16)
self.scrollButtonBottomConstraint?.isActive = false // Note: Need to disable this to avoid a conflict with the other bottom constraint
self.scrollButtonMessageRequestsBottomConstraint = scrollButton.pin(.bottom, to: .top, of: messageRequestView, withInset: -16)
self.scrollButtonMessageRequestsBottomConstraint?.isActive = thread.isMessageRequest()
self.scrollButtonBottomConstraint?.isActive = !thread.isMessageRequest()
messageRequestDescriptionLabel.pin(.top, to: .top, of: messageRequestView, withInset: 10)
messageRequestDescriptionLabel.pin(.left, to: .left, of: messageRequestView, withInset: 40)
messageRequestDescriptionLabel.pin(.right, to: .right, of: messageRequestView, withInset: -40)
messageRequestAcceptButton.pin(.top, to: .bottom, of: messageRequestDescriptionLabel, withInset: 20)
messageRequestAcceptButton.pin(.left, to: .left, of: messageRequestView, withInset: 20)
messageRequestAcceptButton.pin(.bottom, to: .bottom, of: messageRequestView)
messageRequestAcceptButton.set(.height, to: ConversationVC.messageRequestButtonHeight)
messageRequestAcceptButton.pin(.top, to: .bottom, of: messageRequestDescriptionLabel, withInset: 20)
messageRequestAcceptButton.pin(.left, to: .left, of: messageRequestView, withInset: 20)
messageRequestAcceptButton.pin(.bottom, to: .bottom, of: messageRequestView)
messageRequestAcceptButton.set(.height, to: ConversationVC.messageRequestButtonHeight)
messageRequestDeleteButton.pin(.top, to: .bottom, of: messageRequestDescriptionLabel, withInset: 20)
messageRequestDeleteButton.pin(.left, to: .right, of: messageRequestAcceptButton, withInset: 20)
messageRequestDeleteButton.pin(.right, to: .right, of: messageRequestView, withInset: -20)
messageRequestDeleteButton.pin(.bottom, to: .bottom, of: messageRequestView)
messageRequestDeleteButton.set(.width, to: .width, of: messageRequestAcceptButton)
messageRequestDeleteButton.set(.height, to: ConversationVC.messageRequestButtonHeight)
// Unread count view
view.addSubview(unreadCountView)
unreadCountView.addSubview(unreadCountLabel)
unreadCountLabel.pin(.top, to: .top, of: unreadCountView)
unreadCountLabel.pin(.bottom, to: .bottom, of: unreadCountView)
unreadCountView.pin(.leading, to: .leading, of: unreadCountLabel, withInset: -4)
unreadCountView.pin(.trailing, to: .trailing, of: unreadCountLabel, withInset: 4)
unreadCountView.centerYAnchor.constraint(equalTo: scrollButton.topAnchor).isActive = true
unreadCountView.center(.horizontal, in: scrollButton)
updateUnreadCountView()
// Notifications
let notificationCenter = NotificationCenter.default
notificationCenter.addObserver(self, selector: #selector(handleKeyboardWillChangeFrameNotification(_:)), name: UIResponder.keyboardWillChangeFrameNotification, object: nil)
notificationCenter.addObserver(self, selector: #selector(handleKeyboardWillHideNotification(_:)), name: UIResponder.keyboardWillHideNotification, object: nil)
notificationCenter.addObserver(self, selector: #selector(handleAudioDidFinishPlayingNotification(_:)), name: .SNAudioDidFinishPlaying, object: nil)
notificationCenter.addObserver(self, selector: #selector(addOrRemoveBlockedBanner), name: .contactBlockedStateChanged, object: nil)
notificationCenter.addObserver(self, selector: #selector(handleGroupUpdatedNotification), name: .groupThreadUpdated, object: nil)
notificationCenter.addObserver(self, selector: #selector(sendScreenshotNotificationIfNeeded), name: UIApplication.userDidTakeScreenshotNotification, object: nil)
notificationCenter.addObserver(self, selector: #selector(handleMessageSentStatusChanged), name: .messageSentStatusDidChange, object: nil)
// Mentions
MentionsManager.populateUserPublicKeyCacheIfNeeded(for: thread.uniqueId!)
// Draft
var draft = ""
Storage.read { transaction in
draft = self.thread.currentDraft(with: transaction)
}
if !draft.isEmpty {
snInputView.text = draft
}
// Update the input state if this is a contact thread
if let contactThread: TSContactThread = thread as? TSContactThread {
let contact: Contact? = Storage.shared.getContact(with: contactThread.contactSessionID())
// If the contact doesn't exist yet then it's a message request without the first message sent
// so only allow text-based messages
self.snInputView.setEnabledMessageTypes(
(thread.isNoteToSelf() || contact?.didApproveMe == true || thread.isMessageRequest() ?
.all : .textOnly
),
message: nil
)
}
// Update member count if this is a V2 open group
if let v2OpenGroup = Storage.shared.getV2OpenGroup(for: thread.uniqueId!) {
OpenGroupAPIV2.getMemberCount(for: v2OpenGroup.room, on: v2OpenGroup.server).retainUntilComplete()
}
}
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
if !didFinishInitialLayout {
// Scroll to the last unread message if possible; otherwise scroll to the bottom.
// When the unread message count is more than the number of view items of a page,
// the screen will scroll to the bottom instead of the first unread message.
// unreadIndicatorIndex is calculated during loading of the viewItems, so it's
// supposed to be accurate.
DispatchQueue.main.async {
if let focusedMessageID = self.focusedMessageID {
self.scrollToInteraction(with: focusedMessageID, isAnimated: false, highlighted: true)
} else {
let firstUnreadMessageIndex = self.viewModel.viewState.unreadIndicatorIndex?.intValue
?? (self.viewItems.count - self.unreadViewItems.count)
if self.initialUnreadCount > 0, let viewItem = self.viewItems[ifValid: firstUnreadMessageIndex], let interactionID = viewItem.interaction.uniqueId {
self.scrollToInteraction(with: interactionID, position: .top, isAnimated: false)
self.unreadCountView.alpha = self.scrollButton.alpha
} else {
self.scrollToBottom(isAnimated: false)
}
}
self.scrollButton.alpha = self.getScrollButtonOpacity()
}
}
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
highlightFocusedMessageIfNeeded()
didFinishInitialLayout = true
markAllAsRead()
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
let text = snInputView.text
Storage.write { transaction in
self.thread.setDraft(text, transaction: transaction)
}
inputAccessoryView?.resignFirstResponder()
}
override func viewDidDisappear(_ animated: Bool) {
super.viewDidDisappear(animated)
mediaCache.removeAllObjects()
}
deinit {
NotificationCenter.default.removeObserver(self)
}
// MARK: Table View Data Source
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return viewItems.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let viewItem = viewItems[indexPath.row]
let cell = tableView.dequeueReusableCell(withIdentifier: MessageCell.getCellType(for: viewItem).identifier) as! MessageCell
cell.delegate = self
cell.thread = thread
cell.viewItem = viewItem
return cell
}
// MARK: Updating
func updateNavBarButtons() {
navigationItem.hidesBackButton = isShowingSearchUI
if isShowingSearchUI {
navigationItem.leftBarButtonItem = nil
navigationItem.rightBarButtonItems = []
}
else {
if let contactThread: TSContactThread = thread as? TSContactThread {
// Don't show the settings button for message requests
if let contact: Contact = Storage.shared.getContact(with: contactThread.contactSessionID()), contact.isApproved, contact.didApproveMe {
let size = Values.verySmallProfilePictureSize
let profilePictureView = ProfilePictureView()
profilePictureView.size = size
profilePictureView.update(for: thread)
profilePictureView.set(.width, to: size)
profilePictureView.set(.height, to: size)
let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(openSettings))
profilePictureView.addGestureRecognizer(tapGestureRecognizer)
let rightBarButtonItem: UIBarButtonItem = UIBarButtonItem(customView: profilePictureView)
rightBarButtonItem.accessibilityLabel = "Settings button"
rightBarButtonItem.isAccessibilityElement = true
navigationItem.rightBarButtonItem = rightBarButtonItem
}
else {
// Note: Adding an empty button because without it the title alignment is busted (Note: The size was
// taken from the layout inspector for the back button in Xcode
navigationItem.rightBarButtonItem = UIBarButtonItem(customView: UIView(frame: CGRect(x: 0, y: 0, width: 37, height: 44)))
}
}
else {
let rightBarButtonItem: UIBarButtonItem = UIBarButtonItem(image: UIImage(named: "Gear"), style: .plain, target: self, action: #selector(openSettings))
rightBarButtonItem.accessibilityLabel = "Settings button"
rightBarButtonItem.isAccessibilityElement = true
navigationItem.rightBarButtonItem = rightBarButtonItem
}
}
}
private func highlightFocusedMessageIfNeeded() {
if let indexPath = focusedMessageIndexPath, let cell = messagesTableView.cellForRow(at: indexPath) as? VisibleMessageCell {
cell.highlight()
focusedMessageIndexPath = nil
}
}
@objc func handleKeyboardWillChangeFrameNotification(_ notification: Notification) {
// Please refer to https://github.com/mapbox/mapbox-navigation-ios/issues/1600
// and https://stackoverflow.com/a/25260930 to better understand what we are
// doing with the UIViewAnimationOptions
let userInfo: [AnyHashable: Any] = (notification.userInfo ?? [:])
let duration = ((userInfo[UIResponder.keyboardAnimationDurationUserInfoKey] as? TimeInterval) ?? 0)
let curveValue: Int = ((userInfo[UIResponder.keyboardAnimationCurveUserInfoKey] as? Int) ?? Int(UIView.AnimationOptions.curveEaseInOut.rawValue))
let options: UIView.AnimationOptions = UIView.AnimationOptions(rawValue: UInt(curveValue << 16))
let keyboardRect: CGRect = ((userInfo[UIResponder.keyboardFrameEndUserInfoKey] as? CGRect) ?? CGRect.zero)
// Calculate new positions (Need the ensure the 'messageRequestView' has been layed out as it's
// needed for proper calculations, so force an initial layout if it doesn't have a size)
var hasDoneLayout: Bool = true
if messageRequestView.bounds.height <= CGFloat.leastNonzeroMagnitude {
hasDoneLayout = false
UIView.performWithoutAnimation {
self.view.layoutIfNeeded()
}
}
let keyboardTop = (UIScreen.main.bounds.height - keyboardRect.minY)
let messageRequestsOffset: CGFloat = (messageRequestView.isHidden ? 0 : messageRequestView.bounds.height + 16)
let oldContentInset: UIEdgeInsets = messagesTableView.contentInset
let newContentInset: UIEdgeInsets = UIEdgeInsets(
top: 0,
leading: 0,
bottom: (Values.mediumSpacing + keyboardTop + messageRequestsOffset),
trailing: 0
)
let newContentOffsetY: CGFloat = (messagesTableView.contentOffset.y + (newContentInset.bottom - oldContentInset.bottom))
let changes = { [weak self] in
self?.scrollButtonBottomConstraint?.constant = -(keyboardTop + 16)
self?.messageRequestsViewBotomConstraint?.constant = -(keyboardTop + 16)
self?.messagesTableView.contentInset = newContentInset
self?.messagesTableView.contentOffset.y = newContentOffsetY
let scrollButtonOpacity: CGFloat = (self?.getScrollButtonOpacity() ?? 0)
self?.scrollButton.alpha = scrollButtonOpacity
self?.view.setNeedsLayout()
self?.view.layoutIfNeeded()
}
// Perform the changes (don't animate if the initial layout hasn't been completed)
guard hasDoneLayout else {
UIView.performWithoutAnimation {
changes()
}
return
}
UIView.animate(
withDuration: duration,
delay: 0,
options: options,
animations: changes,
completion: nil
)
}
@objc func handleKeyboardWillHideNotification(_ notification: Notification) {
// Please refer to https://github.com/mapbox/mapbox-navigation-ios/issues/1600
// and https://stackoverflow.com/a/25260930 to better understand what we are
// doing with the UIViewAnimationOptions
let userInfo: [AnyHashable: Any] = (notification.userInfo ?? [:])
let duration = ((userInfo[UIResponder.keyboardAnimationDurationUserInfoKey] as? TimeInterval) ?? 0)
let curveValue: Int = ((userInfo[UIResponder.keyboardAnimationCurveUserInfoKey] as? Int) ?? Int(UIView.AnimationOptions.curveEaseInOut.rawValue))
let options: UIView.AnimationOptions = UIView.AnimationOptions(rawValue: UInt(curveValue << 16))
let keyboardRect: CGRect = ((userInfo[UIResponder.keyboardFrameEndUserInfoKey] as? CGRect) ?? CGRect.zero)
let keyboardTop = (UIScreen.main.bounds.height - keyboardRect.minY)
UIView.animate(
withDuration: duration,
delay: 0,
options: options,
animations: { [weak self] in
self?.scrollButtonBottomConstraint?.constant = -(keyboardTop + 16)
self?.messageRequestsViewBotomConstraint?.constant = -(keyboardTop + 16)
let scrollButtonOpacity: CGFloat = (self?.getScrollButtonOpacity() ?? 0)
self?.scrollButton.alpha = scrollButtonOpacity
self?.unreadCountView.alpha = scrollButtonOpacity
self?.view.setNeedsLayout()
self?.view.layoutIfNeeded()
},
completion: nil
)
}
func conversationViewModelWillUpdate() {
// Not currently in use
}
func conversationViewModelDidUpdate(_ conversationUpdate: ConversationUpdate) {
guard self.isViewLoaded else { return }
let updateType = conversationUpdate.conversationUpdateType
guard updateType != .minor else { return } // No view items were affected
if updateType == .reload {
if threadStartedAsMessageRequest {
updateNavBarButtons() // In case the message request was approved
}
return messagesTableView.reloadData()
}
var shouldScrollToBottom = false
let batchUpdates: () -> Void = {
for update in conversationUpdate.updateItems! {
switch update.updateItemType {
case .delete:
self.messagesTableView.deleteRows(at: [ IndexPath(row: Int(update.oldIndex), section: 0) ], with: .none)
case .insert:
// Perform inserts before updates
self.messagesTableView.insertRows(at: [ IndexPath(row: Int(update.newIndex), section: 0) ], with: .none)
if update.viewItem?.interaction is TSOutgoingMessage {
shouldScrollToBottom = true
} else {
shouldScrollToBottom = self.isCloseToBottom
}
case .update:
self.messagesTableView.reloadRows(at: [ IndexPath(row: Int(update.oldIndex), section: 0) ], with: .none)
default: preconditionFailure()
}
// Update the nav items if the message request was approved
if (update.viewItem?.interaction as? TSInfoMessage)?.messageType == .messageRequestAccepted {
self.updateNavBarButtons()
}
}
}
UIView.performWithoutAnimation {
messagesTableView.performBatchUpdates(batchUpdates) { _ in
if shouldScrollToBottom {
self.scrollToBottom(isAnimated: false)
}
self.markAllAsRead()
}
}
// Update the input state if this is a contact thread
if let contactThread: TSContactThread = thread as? TSContactThread {
let contact: Contact? = Storage.shared.getContact(with: contactThread.contactSessionID())
// If the contact doesn't exist yet then it's a message request without the first message sent
// so only allow text-based messages
self.snInputView.setEnabledMessageTypes(
(thread.isNoteToSelf() || contact?.didApproveMe == true || thread.isMessageRequest() ?
.all : .textOnly
),
message: nil
)
}
}
func conversationViewModelWillLoadMoreItems() {
view.layoutIfNeeded()
// The scroll distance to bottom will be restored in conversationViewModelDidLoadMoreItems
scrollDistanceToBottomBeforeUpdate = messagesTableView.contentSize.height - messagesTableView.contentOffset.y
}
func conversationViewModelDidLoadMoreItems() {
guard let scrollDistanceToBottomBeforeUpdate = scrollDistanceToBottomBeforeUpdate else { return }
view.layoutIfNeeded()
messagesTableView.contentOffset.y = messagesTableView.contentSize.height - scrollDistanceToBottomBeforeUpdate
isLoadingMore = false
}
func conversationViewModelDidLoadPrevPage() {
// Not currently in use
}
func conversationViewModelRangeDidChange() {
// Not currently in use
}
func conversationViewModelDidReset() {
// Not currently in use
}
@objc private func handleGroupUpdatedNotification() {
thread.reload() // Needed so that thread.isCurrentUserMemberInGroup() is up to date
reloadInputViews()
}
@objc private func handleMessageSentStatusChanged() {
DispatchQueue.main.async {
guard let indexPaths = self.messagesTableView.indexPathsForVisibleRows else { return }
var indexPathsToReload: [IndexPath] = []
for indexPath in indexPaths {
guard let cell = self.messagesTableView.cellForRow(at: indexPath) as? VisibleMessageCell else { continue }
let isLast = (indexPath.item == (self.messagesTableView.numberOfRows(inSection: 0) - 1))
guard !isLast else { continue }
if !cell.messageStatusImageView.isHidden {
indexPathsToReload.append(indexPath)
}
}
UIView.performWithoutAnimation {
self.messagesTableView.reloadRows(at: indexPathsToReload, with: .none)
}
}
}
// MARK: General
@objc func addOrRemoveBlockedBanner() {
func detach() {
blockedBanner.removeFromSuperview()
}
guard let thread = thread as? TSContactThread else { return detach() }
if thread.isBlocked() {
view.addSubview(blockedBanner)
blockedBanner.pin([ UIView.HorizontalEdge.left, UIView.VerticalEdge.top, UIView.HorizontalEdge.right ], to: view)
}
else {
detach()
}
}
func markAllAsRead() {
guard let lastSortID = viewItems.last?.interaction.sortId else { return }
OWSReadReceiptManager.shared().markAsReadLocally(
beforeSortId: lastSortID,
thread: thread,
trySendReadReceipt: !thread.isMessageRequest()
)
SSKEnvironment.shared.disappearingMessagesJob.cleanupMessagesWhichFailedToStartExpiringFromNow()
}
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableView.automaticDimension
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableView.automaticDimension
}
func getMediaCache() -> NSCache<NSString, AnyObject> {
return mediaCache
}
func scrollToBottom(isAnimated: Bool) {
guard !isUserScrolling && !viewItems.isEmpty else { return }
messagesTableView.scrollToRow(at: IndexPath(row: viewItems.count - 1, section: 0), at: .bottom, 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[ifValid: $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 < 10000 ? "\(unreadCount)" : "9999+"
let fontSize = (unreadCount < 10000) ? Values.verySmallFontSize : 8
unreadCountLabel.font = .boldSystemFont(ofSize: fontSize)
unreadCountView.isHidden = (unreadCount == 0)
}
func autoLoadMoreIfNeeded() {
let isMainAppAndActive = CurrentAppContext().isMainAppAndActive
guard isMainAppAndActive && didFinishInitialLayout && 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.setUpSessionStyle()
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, highlighted: Bool = false) {
guard let indexPath = viewModel.ensureLoadWindowContainsInteractionId(interactionID) else { return }
messagesTableView.scrollToRow(at: indexPath, at: position, animated: isAnimated)
if highlighted {
focusedMessageIndexPath = indexPath
}
}
}