1517 lines
68 KiB
Swift
1517 lines
68 KiB
Swift
// Copyright © 2022 Rangeproof Pty Ltd. All rights reserved.
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import UIKit
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import GRDB
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import DifferenceKit
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import SessionUIKit
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import SessionMessagingKit
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import SessionUtilitiesKit
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import SignalUtilitiesKit
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final class ConversationVC: BaseVC, OWSConversationSettingsViewDelegate, ConversationSearchControllerDelegate, UITableViewDataSource, UITableViewDelegate {
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private static let loadingHeaderHeight: CGFloat = 20
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private static let messageRequestButtonHeight: CGFloat = 34
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internal let viewModel: ConversationViewModel
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private var dataChangeObservable: DatabaseCancellable?
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private var hasLoadedInitialThreadData: Bool = false
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private var hasLoadedInitialInteractionData: Bool = false
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private var currentTargetOffset: CGPoint?
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private var isAutoLoadingNextPage: Bool = false
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private var isLoadingMore: Bool = false
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var isReplacingThread: Bool = false
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/// This flag indicates whether the thread data has been reloaded after a disappearance (it defaults to true as it will
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/// never have disappeared before - this is only needed for value observers since they run asynchronously)
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private var hasReloadedThreadDataAfterDisappearance: Bool = true
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var focusedInteractionId: Int64?
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var shouldHighlightNextScrollToInteraction: Bool = false
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var scrollButtonBottomConstraint: NSLayoutConstraint?
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var scrollButtonMessageRequestsBottomConstraint: NSLayoutConstraint?
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var messageRequestsViewBotomConstraint: NSLayoutConstraint?
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// Search
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var isShowingSearchUI = false
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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 currentMentionStartIndex: String.Index?
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var mentions: [ConversationViewModel.MentionInfo] = []
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// Scrolling & paging
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var isUserScrolling = false
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var hasPerformedInitialScroll = false
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var didFinishInitialLayout = false
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var scrollDistanceToBottomBeforeUpdate: CGFloat?
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var baselineKeyboardHeight: CGFloat = 0
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/// This flag is used to temporarily prevent the ConversationVC from becoming the first responder (primarily used with
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/// custom transitions from preventing them from being buggy
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var delayFirstResponder: Bool = false
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override var canBecomeFirstResponder: Bool {
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!delayFirstResponder &&
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// Need to return false during the swap between threads to prevent keyboard dismissal
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!isReplacingThread
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}
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override var inputAccessoryView: UIView? {
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guard
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viewModel.threadData.threadVariant != .closedGroup ||
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viewModel.threadData.currentUserIsClosedGroupMember == true
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else { return nil }
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return (isShowingSearchUI ? searchController.resultsBar : snInputView)
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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 (`tableView.adjustedContentInset.bottom`).
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var tableViewUnobscuredHeight: CGFloat {
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let bottomInset = tableView.adjustedContentInset.bottom
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return tableView.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 tableView.contentSize.height - tableViewUnobscuredHeight
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}
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var isCloseToBottom: Bool {
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let margin = (self.lastPageTop - self.tableView.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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if let hexEncodedSeed: String = Identity.fetchHexEncodedSeed() {
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return Mnemonic.encode(hexEncodedString: hexEncodedSeed)
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}
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// Legacy account
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return Mnemonic.encode(hexEncodedString: Identity.fetchUserPrivateKey()!.toHexString())
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}()
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// FIXME: Would be good to create a Swift-based cache and replace this
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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 = ConversationSearchController(
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threadId: self.viewModel.threadData.threadId
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)
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result.uiSearchController.obscuresBackgroundDuringPresentation = false
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result.delegate = self
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return result
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}()
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// MARK: - UI
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lazy var titleView: ConversationTitleView = {
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let result: ConversationTitleView = ConversationTitleView()
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let tapGestureRecognizer = UITapGestureRecognizer(
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target: self,
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action: #selector(handleTitleViewTapped)
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)
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result.addGestureRecognizer(tapGestureRecognizer)
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return result
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}()
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lazy var tableView: InsetLockableTableView = {
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let result: InsetLockableTableView = InsetLockableTableView()
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result.separatorStyle = .none
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result.backgroundColor = .clear
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result.showsVerticalScrollIndicator = false
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result.contentInsetAdjustmentBehavior = .never
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result.keyboardDismissMode = .interactive
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result.contentInset = UIEdgeInsets(
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top: 0,
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leading: 0,
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bottom: Values.mediumSpacing,
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trailing: 0
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)
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result.registerHeaderFooterView(view: UITableViewHeaderFooterView.self)
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result.register(view: VisibleMessageCell.self)
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result.register(view: InfoMessageCell.self)
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result.register(view: TypingIndicatorCell.self)
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result.register(view: CallMessageCell.self)
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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 = InputView(
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threadVariant: self.viewModel.threadData.threadVariant,
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delegate: self
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)
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lazy var unreadCountView: UIView = {
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let result: UIView = UIView()
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result.backgroundColor = Colors.text.withAlphaComponent(Values.veryLowOpacity)
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result.set(.width, greaterThanOrEqualTo: ConversationVC.unreadCountViewSize)
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result.set(.height, to: ConversationVC.unreadCountViewSize)
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result.layer.masksToBounds = true
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result.layer.cornerRadius = (ConversationVC.unreadCountViewSize / 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 = 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 blockedBanner: InfoBanner = {
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let result: InfoBanner = InfoBanner(
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message: self.viewModel.blockedBannerMessage,
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backgroundColor: Colors.destructive
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)
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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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lazy var footerControlsStackView: UIStackView = {
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let result: UIStackView = UIStackView()
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result.translatesAutoresizingMaskIntoConstraints = false
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result.axis = .vertical
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result.alignment = .trailing
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result.distribution = .equalSpacing
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result.spacing = 10
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result.layoutMargins = UIEdgeInsets(top: 0, left: 20, bottom: 0, right: 20)
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result.isLayoutMarginsRelativeArrangement = true
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return result
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}()
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lazy var scrollButton: ScrollToBottomButton = ScrollToBottomButton(delegate: self)
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lazy var messageRequestView: UIView = {
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let result: UIView = UIView()
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result.translatesAutoresizingMaskIntoConstraints = false
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result.isHidden = (
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self.viewModel.threadData.threadIsMessageRequest == false ||
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self.viewModel.threadData.threadRequiresApproval == true
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)
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result.setGradient(Gradients.defaultBackground)
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return result
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}()
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private let messageRequestDescriptionLabel: UILabel = {
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let result: UILabel = UILabel()
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result.translatesAutoresizingMaskIntoConstraints = false
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result.font = UIFont.systemFont(ofSize: 12)
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result.text = NSLocalizedString("MESSAGE_REQUESTS_INFO", comment: "")
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result.textColor = Colors.sessionMessageRequestsInfoText
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result.textAlignment = .center
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result.numberOfLines = 2
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return result
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}()
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private lazy var messageRequestAcceptButton: UIButton = {
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let result: UIButton = UIButton()
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result.translatesAutoresizingMaskIntoConstraints = false
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result.clipsToBounds = true
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result.titleLabel?.font = UIFont.boldSystemFont(ofSize: 18)
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result.setTitle(NSLocalizedString("TXT_DELETE_ACCEPT", comment: ""), for: .normal)
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result.setTitleColor(Colors.sessionHeading, for: .normal)
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result.setBackgroundImage(
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Colors.sessionHeading
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.withAlphaComponent(isDarkMode ? 0.2 : 0.06)
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.toImage(isDarkMode: isDarkMode),
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for: .highlighted
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)
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result.layer.cornerRadius = (ConversationVC.messageRequestButtonHeight / 2)
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result.layer.borderColor = Colors.sessionHeading
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.resolvedColor(
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// Note: This is needed for '.cgColor' to support dark mode
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with: UITraitCollection(userInterfaceStyle: isDarkMode ? .dark : .light)
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).cgColor
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result.layer.borderWidth = 1
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result.addTarget(self, action: #selector(acceptMessageRequest), for: .touchUpInside)
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return result
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}()
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private lazy var messageRequestDeleteButton: UIButton = {
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let result: UIButton = UIButton()
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result.translatesAutoresizingMaskIntoConstraints = false
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result.clipsToBounds = true
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result.titleLabel?.font = UIFont.boldSystemFont(ofSize: 18)
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result.setTitle(NSLocalizedString("TXT_DELETE_TITLE", comment: ""), for: .normal)
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result.setTitleColor(Colors.destructive, for: .normal)
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result.setBackgroundImage(
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Colors.destructive
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.withAlphaComponent(isDarkMode ? 0.2 : 0.06)
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.toImage(isDarkMode: isDarkMode),
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for: .highlighted
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)
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result.layer.cornerRadius = (ConversationVC.messageRequestButtonHeight / 2)
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result.layer.borderColor = Colors.destructive
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.resolvedColor(
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// Note: This is needed for '.cgColor' to support dark mode
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with: UITraitCollection(userInterfaceStyle: isDarkMode ? .dark : .light)
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).cgColor
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result.layer.borderWidth = 1
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result.addTarget(self, action: #selector(deleteMessageRequest), for: .touchUpInside)
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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: - Initialization
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init(threadId: String, threadVariant: SessionThread.Variant, focusedInteractionId: Int64? = nil) {
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self.viewModel = ConversationViewModel(threadId: threadId, threadVariant: threadVariant, focusedInteractionId: focusedInteractionId)
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Storage.shared.addObserver(viewModel.pagedDataObserver)
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super.init(nibName: nil, bundle: nil)
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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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deinit {
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NotificationCenter.default.removeObserver(self)
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}
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// MARK: - Lifecycle
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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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// Note: We need to update the nav bar buttons here (with invalid data) because if we don't the
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// nav will be offset incorrectly during the push animation (unfortunately the profile icon still
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// doesn't appear until after the animation, I assume it's taking a snapshot or something, but
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// there isn't much we can do about that unfortunately)
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updateNavBarButtons(threadData: nil, initialVariant: self.viewModel.initialThreadVariant)
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titleView.initialSetup(with: self.viewModel.initialThreadVariant)
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// Constraints
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view.addSubview(tableView)
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tableView.pin(to: view)
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// Message requests view & scroll to bottom
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view.addSubview(scrollButton)
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view.addSubview(messageRequestView)
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messageRequestView.addSubview(messageRequestDescriptionLabel)
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messageRequestView.addSubview(messageRequestAcceptButton)
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messageRequestView.addSubview(messageRequestDeleteButton)
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scrollButton.pin(.right, to: .right, of: view, withInset: -20)
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messageRequestView.pin(.left, to: .left, of: view)
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messageRequestView.pin(.right, to: .right, of: view)
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self.messageRequestsViewBotomConstraint = messageRequestView.pin(.bottom, to: .bottom, of: view, withInset: -16)
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self.scrollButtonBottomConstraint = scrollButton.pin(.bottom, to: .bottom, of: view, withInset: -16)
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self.scrollButtonBottomConstraint?.isActive = false // Note: Need to disable this to avoid a conflict with the other bottom constraint
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self.scrollButtonMessageRequestsBottomConstraint = scrollButton.pin(.bottom, to: .top, of: messageRequestView, withInset: -16)
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messageRequestDescriptionLabel.pin(.top, to: .top, of: messageRequestView, withInset: 10)
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messageRequestDescriptionLabel.pin(.left, to: .left, of: messageRequestView, withInset: 40)
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messageRequestDescriptionLabel.pin(.right, to: .right, of: messageRequestView, withInset: -40)
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messageRequestAcceptButton.pin(.top, to: .bottom, of: messageRequestDescriptionLabel, withInset: 20)
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messageRequestAcceptButton.pin(.left, to: .left, of: messageRequestView, withInset: 20)
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messageRequestAcceptButton.pin(.bottom, to: .bottom, of: messageRequestView)
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messageRequestAcceptButton.set(.height, to: ConversationVC.messageRequestButtonHeight)
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messageRequestDeleteButton.pin(.top, to: .bottom, of: messageRequestDescriptionLabel, withInset: 20)
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messageRequestDeleteButton.pin(.left, to: .right, of: messageRequestAcceptButton, withInset: UIDevice.current.isIPad ? Values.iPadButtonSpacing : 20)
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messageRequestDeleteButton.pin(.right, to: .right, of: messageRequestView, withInset: -20)
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messageRequestDeleteButton.pin(.bottom, to: .bottom, of: messageRequestView)
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messageRequestDeleteButton.set(.width, to: .width, of: messageRequestAcceptButton)
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messageRequestDeleteButton.set(.height, to: ConversationVC.messageRequestButtonHeight)
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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(.top, to: .top, of: unreadCountView)
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unreadCountLabel.pin(.bottom, to: .bottom, of: unreadCountView)
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unreadCountView.pin(.leading, to: .leading, of: unreadCountLabel, withInset: -4)
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unreadCountView.pin(.trailing, to: .trailing, of: unreadCountLabel, withInset: 4)
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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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// Notifications
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NotificationCenter.default.addObserver(
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self,
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selector: #selector(applicationDidBecomeActive(_:)),
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name: UIApplication.didBecomeActiveNotification,
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object: nil
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)
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NotificationCenter.default.addObserver(
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self,
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selector: #selector(applicationDidResignActive(_:)),
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name: UIApplication.didEnterBackgroundNotification, object: nil
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)
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NotificationCenter.default.addObserver(
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self,
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selector: #selector(handleKeyboardWillChangeFrameNotification(_:)),
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name: UIResponder.keyboardWillChangeFrameNotification,
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object: nil
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)
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NotificationCenter.default.addObserver(
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self,
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selector: #selector(handleKeyboardWillHideNotification(_:)),
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name: UIResponder.keyboardWillHideNotification,
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object: nil
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)
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}
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override func viewWillAppear(_ animated: Bool) {
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super.viewWillAppear(animated)
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startObservingChanges()
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}
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override func viewDidAppear(_ animated: Bool) {
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super.viewDidAppear(animated)
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// Flag that the initial layout has been completed (the flag blocks and unblocks a number
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// of different behaviours)
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didFinishInitialLayout = true
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if delayFirstResponder || isShowingSearchUI {
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delayFirstResponder = false
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DispatchQueue.main.asyncAfter(deadline: .now() + .milliseconds(50)) { [weak self] in
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(self?.isShowingSearchUI == false ?
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self :
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self?.searchController.uiSearchController.searchBar
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)?.becomeFirstResponder()
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}
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}
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recoverInputView()
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}
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override func viewWillDisappear(_ animated: Bool) {
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super.viewWillDisappear(animated)
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// Don't set the draft or resign the first responder if we are replacing the thread (want the keyboard
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// to appear to remain focussed)
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guard !isReplacingThread else { return }
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stopObservingChanges()
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viewModel.updateDraft(to: snInputView.text)
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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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hasReloadedThreadDataAfterDisappearance = false
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}
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@objc func applicationDidBecomeActive(_ notification: Notification) {
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startObservingChanges(didReturnFromBackground: true)
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recoverInputView()
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}
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@objc func applicationDidResignActive(_ notification: Notification) {
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stopObservingChanges()
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}
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// MARK: - Updating
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private func startObservingChanges(didReturnFromBackground: Bool = false) {
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// Start observing for data changes
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dataChangeObservable = Storage.shared.start(
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viewModel.observableThreadData,
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onError: { _ in },
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onChange: { [weak self] maybeThreadData in
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guard let threadData: SessionThreadViewModel = maybeThreadData else {
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// If the thread data is null and the id was blinded then we just unblinded the thread
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// and need to swap over to the new one
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guard
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let sessionId: String = self?.viewModel.threadData.threadId,
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SessionId.Prefix(from: sessionId) == .blinded,
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let blindedLookup: BlindedIdLookup = Storage.shared.read({ db in
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try BlindedIdLookup
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.filter(id: sessionId)
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.fetchOne(db)
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}),
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let unblindedId: String = blindedLookup.sessionId
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else {
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// If we don't have an unblinded id then something has gone very wrong so pop to the HomeVC
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self?.navigationController?.popToRootViewController(animated: true)
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return
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}
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// Stop observing changes
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self?.stopObservingChanges()
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Storage.shared.removeObserver(self?.viewModel.pagedDataObserver)
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|
|
|
// Swap the observing to the updated thread
|
|
self?.viewModel.swapToThread(updatedThreadId: unblindedId)
|
|
|
|
// Start observing changes again
|
|
Storage.shared.addObserver(self?.viewModel.pagedDataObserver)
|
|
self?.startObservingChanges()
|
|
return
|
|
}
|
|
|
|
// The default scheduler emits changes on the main thread
|
|
self?.handleThreadUpdates(threadData)
|
|
|
|
// Note: We want to load the interaction data into the UI after the initial thread data
|
|
// has loaded to prevent an issue where the conversation loads with the wrong offset
|
|
if self?.viewModel.onInteractionChange == nil {
|
|
self?.viewModel.onInteractionChange = { [weak self] updatedInteractionData in
|
|
self?.handleInteractionUpdates(updatedInteractionData)
|
|
}
|
|
|
|
// Note: When returning from the background we could have received notifications but the
|
|
// PagedDatabaseObserver won't have them so we need to force a re-fetch of the current
|
|
// data to ensure everything is up to date
|
|
if didReturnFromBackground {
|
|
self?.viewModel.pagedDataObserver?.reload()
|
|
}
|
|
}
|
|
}
|
|
)
|
|
}
|
|
|
|
private func stopObservingChanges() {
|
|
// Stop observing database changes
|
|
dataChangeObservable?.cancel()
|
|
self.viewModel.onInteractionChange = nil
|
|
}
|
|
|
|
private func handleThreadUpdates(_ updatedThreadData: SessionThreadViewModel, initialLoad: Bool = false) {
|
|
// Ensure the first load or a load when returning from a child screen runs without animations (if
|
|
// we don't do this the cells will animate in from a frame of CGRect.zero or have a buggy transition)
|
|
guard hasLoadedInitialThreadData && hasReloadedThreadDataAfterDisappearance else {
|
|
hasLoadedInitialThreadData = true
|
|
hasReloadedThreadDataAfterDisappearance = true
|
|
UIView.performWithoutAnimation { handleThreadUpdates(updatedThreadData, initialLoad: true) }
|
|
return
|
|
}
|
|
|
|
// Update general conversation UI
|
|
|
|
if
|
|
initialLoad ||
|
|
viewModel.threadData.displayName != updatedThreadData.displayName ||
|
|
viewModel.threadData.threadVariant != updatedThreadData.threadVariant ||
|
|
viewModel.threadData.threadIsNoteToSelf != updatedThreadData.threadIsNoteToSelf ||
|
|
viewModel.threadData.threadMutedUntilTimestamp != updatedThreadData.threadMutedUntilTimestamp ||
|
|
viewModel.threadData.threadOnlyNotifyForMentions != updatedThreadData.threadOnlyNotifyForMentions ||
|
|
viewModel.threadData.userCount != updatedThreadData.userCount
|
|
{
|
|
titleView.update(
|
|
with: updatedThreadData.displayName,
|
|
isNoteToSelf: updatedThreadData.threadIsNoteToSelf,
|
|
threadVariant: updatedThreadData.threadVariant,
|
|
mutedUntilTimestamp: updatedThreadData.threadMutedUntilTimestamp,
|
|
onlyNotifyForMentions: (updatedThreadData.threadOnlyNotifyForMentions == true),
|
|
userCount: updatedThreadData.userCount
|
|
)
|
|
}
|
|
|
|
if
|
|
initialLoad ||
|
|
viewModel.threadData.threadRequiresApproval != updatedThreadData.threadRequiresApproval ||
|
|
viewModel.threadData.threadIsMessageRequest != updatedThreadData.threadIsMessageRequest ||
|
|
viewModel.threadData.profile != updatedThreadData.profile
|
|
{
|
|
updateNavBarButtons(threadData: updatedThreadData, initialVariant: viewModel.initialThreadVariant)
|
|
|
|
let messageRequestsViewWasVisible: Bool = (messageRequestView.isHidden == false)
|
|
|
|
UIView.animate(withDuration: 0.3) { [weak self] in
|
|
self?.messageRequestView.isHidden = (
|
|
updatedThreadData.threadIsMessageRequest == false ||
|
|
updatedThreadData.threadRequiresApproval == true
|
|
)
|
|
|
|
self?.scrollButtonMessageRequestsBottomConstraint?.isActive = (
|
|
updatedThreadData.threadIsMessageRequest == true
|
|
)
|
|
self?.scrollButtonBottomConstraint?.isActive = (updatedThreadData.threadIsMessageRequest == false)
|
|
|
|
// Update the table content inset and offset to account for
|
|
// the dissapearance of the messageRequestsView
|
|
if messageRequestsViewWasVisible {
|
|
let messageRequestsOffset: CGFloat = ((self?.messageRequestView.bounds.height ?? 0) + 16)
|
|
let oldContentInset: UIEdgeInsets = (self?.tableView.contentInset ?? UIEdgeInsets.zero)
|
|
self?.tableView.contentInset = UIEdgeInsets(
|
|
top: 0,
|
|
leading: 0,
|
|
bottom: max(oldContentInset.bottom - messageRequestsOffset, 0),
|
|
trailing: 0
|
|
)
|
|
}
|
|
}
|
|
}
|
|
|
|
if initialLoad || viewModel.threadData.threadIsBlocked != updatedThreadData.threadIsBlocked {
|
|
addOrRemoveBlockedBanner(threadIsBlocked: (updatedThreadData.threadIsBlocked == true))
|
|
}
|
|
|
|
if initialLoad || viewModel.threadData.threadUnreadCount != updatedThreadData.threadUnreadCount {
|
|
updateUnreadCountView(unreadCount: updatedThreadData.threadUnreadCount)
|
|
}
|
|
|
|
if initialLoad || viewModel.threadData.enabledMessageTypes != updatedThreadData.enabledMessageTypes {
|
|
snInputView.setEnabledMessageTypes(
|
|
updatedThreadData.enabledMessageTypes,
|
|
message: nil
|
|
)
|
|
}
|
|
|
|
// Only set the draft content on the initial load
|
|
if initialLoad, let draft: String = updatedThreadData.threadMessageDraft, !draft.isEmpty {
|
|
snInputView.text = draft
|
|
}
|
|
|
|
// Now we have done all the needed diffs, update the viewModel with the latest data and mark
|
|
// all messages as read (we do it in here as the 'threadData' actually contains the last
|
|
// 'interactionId' for the thread)
|
|
self.viewModel.updateThreadData(updatedThreadData)
|
|
self.viewModel.markAllAsRead()
|
|
|
|
/// **Note:** This needs to happen **after** we have update the viewModel's thread data
|
|
if initialLoad || viewModel.threadData.currentUserIsClosedGroupMember != updatedThreadData.currentUserIsClosedGroupMember {
|
|
if !self.isFirstResponder {
|
|
self.becomeFirstResponder()
|
|
}
|
|
else {
|
|
self.reloadInputViews()
|
|
}
|
|
}
|
|
}
|
|
|
|
private func handleInteractionUpdates(_ updatedData: [ConversationViewModel.SectionModel], initialLoad: Bool = false) {
|
|
// Ensure the first load or a load when returning from a child screen runs without animations (if
|
|
// we don't do this the cells will animate in from a frame of CGRect.zero or have a buggy transition)
|
|
guard self.hasLoadedInitialInteractionData else {
|
|
self.hasLoadedInitialInteractionData = true
|
|
self.viewModel.updateInteractionData(updatedData)
|
|
|
|
UIView.performWithoutAnimation {
|
|
self.tableView.reloadData()
|
|
self.performInitialScrollIfNeeded()
|
|
}
|
|
return
|
|
}
|
|
|
|
// Store the 'sentMessageBeforeUpdate' state locally
|
|
let didSendMessageBeforeUpdate: Bool = self.viewModel.sentMessageBeforeUpdate
|
|
self.viewModel.sentMessageBeforeUpdate = false
|
|
|
|
// When sending a message we want to reload the UI instantly (with any form of animation the message
|
|
// sending feels somewhat unresponsive but an instant update feels snappy)
|
|
guard !didSendMessageBeforeUpdate else {
|
|
self.viewModel.updateInteractionData(updatedData)
|
|
self.tableView.reloadData()
|
|
|
|
// Note: The scroll button alpha won't get set correctly in this case so we forcibly set it to
|
|
// have an alpha of 0 to stop it appearing buggy
|
|
self.scrollToBottom(isAnimated: false)
|
|
self.scrollButton.alpha = 0
|
|
self.unreadCountView.alpha = scrollButton.alpha
|
|
return
|
|
}
|
|
|
|
// Reload the table content animating changes if they'll look good
|
|
struct ItemChangeInfo {
|
|
let isInsertAtTop: Bool
|
|
let firstIndexIsVisible: Bool
|
|
let visibleIndexPath: IndexPath
|
|
let oldVisibleIndexPath: IndexPath
|
|
|
|
init(
|
|
isInsertAtTop: Bool = false,
|
|
firstIndexIsVisible: Bool = false,
|
|
visibleIndexPath: IndexPath = IndexPath(row: 0, section: 0),
|
|
oldVisibleIndexPath: IndexPath = IndexPath(row: 0, section: 0)
|
|
) {
|
|
self.isInsertAtTop = isInsertAtTop
|
|
self.firstIndexIsVisible = firstIndexIsVisible
|
|
self.visibleIndexPath = visibleIndexPath
|
|
self.oldVisibleIndexPath = oldVisibleIndexPath
|
|
}
|
|
}
|
|
|
|
let changeset: StagedChangeset<[ConversationViewModel.SectionModel]> = StagedChangeset(
|
|
source: viewModel.interactionData,
|
|
target: updatedData
|
|
)
|
|
let isInsert: Bool = (changeset.map({ $0.elementInserted.count }).reduce(0, +) > 0)
|
|
let wasLoadingMore: Bool = self.isLoadingMore
|
|
let wasOffsetCloseToBottom: Bool = self.isCloseToBottom
|
|
let numItemsInUpdatedData: [Int] = updatedData.map { $0.elements.count }
|
|
let itemChangeInfo: ItemChangeInfo? = {
|
|
guard
|
|
isInsert,
|
|
let oldSectionIndex: Int = self.viewModel.interactionData.firstIndex(where: { $0.model == .messages }),
|
|
let newSectionIndex: Int = updatedData.firstIndex(where: { $0.model == .messages }),
|
|
let newFirstItemIndex: Int = updatedData[newSectionIndex].elements
|
|
.firstIndex(where: { item -> Bool in
|
|
item.id == self.viewModel.interactionData[oldSectionIndex].elements.first?.id
|
|
}),
|
|
let firstVisibleIndexPath: IndexPath = self.tableView.indexPathsForVisibleRows?
|
|
.filter({ $0.section == oldSectionIndex })
|
|
.sorted()
|
|
.first,
|
|
let newVisibleIndex: Int = updatedData[newSectionIndex].elements
|
|
.firstIndex(where: { item in
|
|
item.id == self.viewModel.interactionData[oldSectionIndex]
|
|
.elements[firstVisibleIndexPath.row]
|
|
.id
|
|
})
|
|
else { return nil }
|
|
|
|
return ItemChangeInfo(
|
|
isInsertAtTop: (
|
|
newSectionIndex > oldSectionIndex ||
|
|
newFirstItemIndex > 0
|
|
),
|
|
firstIndexIsVisible: (firstVisibleIndexPath.row == 0),
|
|
visibleIndexPath: IndexPath(row: newVisibleIndex, section: newSectionIndex),
|
|
oldVisibleIndexPath: firstVisibleIndexPath
|
|
)
|
|
}()
|
|
|
|
guard !isInsert || wasLoadingMore || itemChangeInfo?.isInsertAtTop == true else {
|
|
self.viewModel.updateInteractionData(updatedData)
|
|
self.tableView.reloadData()
|
|
|
|
// Animate to the target interaction (or the bottom) after a slightly delay to prevent buggy
|
|
// animation conflicts
|
|
if let focusedInteractionId: Int64 = self.focusedInteractionId {
|
|
// If we had a focusedInteractionId then scroll to it (and hide the search
|
|
// result bar loading indicator)
|
|
DispatchQueue.main.asyncAfter(deadline: .now() + .milliseconds(100)) { [weak self] in
|
|
self?.searchController.resultsBar.stopLoading()
|
|
self?.scrollToInteractionIfNeeded(
|
|
with: focusedInteractionId,
|
|
isAnimated: true,
|
|
highlight: (self?.shouldHighlightNextScrollToInteraction == true)
|
|
)
|
|
}
|
|
}
|
|
else if wasOffsetCloseToBottom {
|
|
// Scroll to the bottom if an interaction was just inserted and we either
|
|
// just sent a message or are close enough to the bottom (wait a tiny fraction
|
|
// to avoid buggy animation behaviour)
|
|
DispatchQueue.main.asyncAfter(deadline: .now() + .milliseconds(100)) { [weak self] in
|
|
self?.scrollToBottom(isAnimated: true)
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
/// UITableView doesn't really support bottom-aligned content very well and as such jumps around a lot when inserting content but
|
|
/// we want to maintain the current offset from before the data was inserted (except when adding at the bottom while the user is at
|
|
/// the bottom, in which case we want to scroll down)
|
|
///
|
|
/// Unfortunately the UITableView also does some weird things when updating (where it won't have updated it's internal data until
|
|
/// after it performs the next layout); the below code checks a condition on layout and if it passes it calls a closure
|
|
if let itemChangeInfo: ItemChangeInfo = itemChangeInfo, (itemChangeInfo.isInsertAtTop || wasLoadingMore) {
|
|
let oldCellHeight: CGFloat = self.tableView.rectForRow(at: itemChangeInfo.oldVisibleIndexPath).height
|
|
|
|
// The the user triggered the 'scrollToTop' animation (by tapping in the nav bar) then we
|
|
// need to stop the animation before attempting to lock the offset (otherwise things break)
|
|
if itemChangeInfo.firstIndexIsVisible {
|
|
self.tableView.setContentOffset(self.tableView.contentOffset, animated: false)
|
|
}
|
|
|
|
// Wait until the tableView has completed a layout and reported the correct number of
|
|
// sections/rows and then update the contentOffset
|
|
self.tableView.afterNextLayoutSubviews(
|
|
when: { numSections, numRowsInSections, _ -> Bool in
|
|
numSections == updatedData.count &&
|
|
numRowsInSections == numItemsInUpdatedData
|
|
},
|
|
then: { [weak self] in
|
|
UIView.performWithoutAnimation {
|
|
let calculatedRowHeights: CGFloat = (0..<itemChangeInfo.visibleIndexPath.row)
|
|
.reduce(into: 0) { result, next in
|
|
result += (self?.tableView
|
|
.rectForRow(
|
|
at: IndexPath(
|
|
row: next,
|
|
section: itemChangeInfo.visibleIndexPath.section
|
|
)
|
|
)
|
|
.height)
|
|
.defaulting(to: 0)
|
|
}
|
|
let newTargetHeight: CGFloat? = self?.tableView
|
|
.rectForRow(at: itemChangeInfo.visibleIndexPath)
|
|
.height
|
|
let heightDiff: CGFloat = (oldCellHeight - (newTargetHeight ?? oldCellHeight))
|
|
|
|
self?.tableView.contentOffset.y += (calculatedRowHeights - heightDiff)
|
|
}
|
|
|
|
if let focusedInteractionId: Int64 = self?.focusedInteractionId {
|
|
DispatchQueue.main.async { [weak self] in
|
|
// If we had a focusedInteractionId then scroll to it (and hide the search
|
|
// result bar loading indicator)
|
|
self?.searchController.resultsBar.stopLoading()
|
|
self?.scrollToInteractionIfNeeded(
|
|
with: focusedInteractionId,
|
|
isAnimated: true,
|
|
highlight: (self?.shouldHighlightNextScrollToInteraction == true)
|
|
)
|
|
}
|
|
}
|
|
|
|
// Complete page loading
|
|
self?.isLoadingMore = false
|
|
self?.autoLoadNextPageIfNeeded()
|
|
}
|
|
)
|
|
}
|
|
|
|
self.tableView.reload(
|
|
using: changeset,
|
|
deleteSectionsAnimation: .none,
|
|
insertSectionsAnimation: .none,
|
|
reloadSectionsAnimation: .none,
|
|
deleteRowsAnimation: .bottom,
|
|
insertRowsAnimation: .none,
|
|
reloadRowsAnimation: .none,
|
|
interrupt: { itemChangeInfo?.isInsertAtTop == true || $0.changeCount > ConversationViewModel.pageSize }
|
|
) { [weak self] updatedData in
|
|
self?.viewModel.updateInteractionData(updatedData)
|
|
}
|
|
}
|
|
|
|
private func performInitialScrollIfNeeded() {
|
|
guard !hasPerformedInitialScroll && hasLoadedInitialThreadData && hasLoadedInitialInteractionData else {
|
|
return
|
|
}
|
|
|
|
// 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
|
|
if let focusedInteractionId: Int64 = self.viewModel.focusedInteractionId {
|
|
self.scrollToInteractionIfNeeded(with: focusedInteractionId, isAnimated: false, highlight: true)
|
|
self.unreadCountView.alpha = self.scrollButton.alpha
|
|
}
|
|
else {
|
|
self.scrollToBottom(isAnimated: false)
|
|
}
|
|
|
|
self.scrollButton.alpha = self.getScrollButtonOpacity()
|
|
self.hasPerformedInitialScroll = true
|
|
|
|
// Now that the data has loaded we need to check if either of the "load more" sections are
|
|
// visible and trigger them if so
|
|
//
|
|
// Note: We do it this way as we want to trigger the load behaviour for the first section
|
|
// if it has one before trying to trigger the load behaviour for the last section
|
|
self.autoLoadNextPageIfNeeded()
|
|
}
|
|
|
|
private func autoLoadNextPageIfNeeded() {
|
|
guard !self.isAutoLoadingNextPage && !self.isLoadingMore else { return }
|
|
|
|
self.isAutoLoadingNextPage = true
|
|
|
|
DispatchQueue.main.asyncAfter(deadline: .now() + PagedData.autoLoadNextPageDelay) { [weak self] in
|
|
self?.isAutoLoadingNextPage = false
|
|
|
|
// Note: We sort the headers as we want to prioritise loading newer pages over older ones
|
|
let sections: [(ConversationViewModel.Section, CGRect)] = (self?.viewModel.interactionData
|
|
.enumerated()
|
|
.map { index, section in (section.model, (self?.tableView.rectForHeader(inSection: index) ?? .zero)) })
|
|
.defaulting(to: [])
|
|
let shouldLoadOlder: Bool = sections
|
|
.contains { section, headerRect in
|
|
section == .loadOlder &&
|
|
headerRect != .zero &&
|
|
(self?.tableView.bounds.contains(headerRect) == true)
|
|
}
|
|
let shouldLoadNewer: Bool = sections
|
|
.contains { section, headerRect in
|
|
section == .loadNewer &&
|
|
headerRect != .zero &&
|
|
(self?.tableView.bounds.contains(headerRect) == true)
|
|
}
|
|
|
|
guard shouldLoadOlder || shouldLoadNewer else { return }
|
|
|
|
self?.isLoadingMore = true
|
|
|
|
DispatchQueue.global(qos: .default).async { [weak self] in
|
|
// Attachments are loaded in descending order so 'loadOlder' actually corresponds with
|
|
// 'pageAfter' in this case
|
|
self?.viewModel.pagedDataObserver?.load(shouldLoadOlder ?
|
|
.pageAfter :
|
|
.pageBefore
|
|
)
|
|
}
|
|
}
|
|
}
|
|
|
|
func updateNavBarButtons(threadData: SessionThreadViewModel?, initialVariant: SessionThread.Variant) {
|
|
navigationItem.hidesBackButton = isShowingSearchUI
|
|
|
|
if isShowingSearchUI {
|
|
navigationItem.leftBarButtonItem = nil
|
|
navigationItem.rightBarButtonItems = []
|
|
}
|
|
else {
|
|
guard
|
|
let threadData: SessionThreadViewModel = threadData,
|
|
(
|
|
threadData.threadRequiresApproval == false &&
|
|
threadData.threadIsMessageRequest == false
|
|
)
|
|
else {
|
|
// Note: Adding empty buttons because without it the title alignment is busted (Note: The size was
|
|
// taken from the layout inspector for the back button in Xcode
|
|
navigationItem.rightBarButtonItems = [
|
|
UIBarButtonItem(
|
|
customView: UIView(
|
|
frame: CGRect(
|
|
x: 0,
|
|
y: 0,
|
|
// Width of the standard back button minus an arbitrary amount to make the
|
|
// animation look good
|
|
width: (44 - 10),
|
|
height: 44
|
|
)
|
|
)
|
|
),
|
|
(initialVariant == .contact ?
|
|
UIBarButtonItem(customView: UIView(frame: CGRect(x: 0, y: 0, width: 44, height: 44))) :
|
|
nil
|
|
)
|
|
].compactMap { $0 }
|
|
return
|
|
}
|
|
|
|
switch threadData.threadVariant {
|
|
case .contact:
|
|
let profilePictureView = ProfilePictureView()
|
|
profilePictureView.size = Values.verySmallProfilePictureSize
|
|
profilePictureView.update(
|
|
publicKey: threadData.threadId, // Contact thread uses the contactId
|
|
profile: threadData.profile,
|
|
threadVariant: threadData.threadVariant
|
|
)
|
|
profilePictureView.set(.width, to: (44 - 16)) // Width of the standard back button
|
|
profilePictureView.set(.height, to: Values.verySmallProfilePictureSize)
|
|
|
|
let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(openSettings))
|
|
profilePictureView.addGestureRecognizer(tapGestureRecognizer)
|
|
|
|
let settingsButtonItem: UIBarButtonItem = UIBarButtonItem(customView: profilePictureView)
|
|
settingsButtonItem.accessibilityLabel = "Settings button"
|
|
settingsButtonItem.isAccessibilityElement = true
|
|
|
|
if SessionCall.isEnabled && !threadData.threadIsNoteToSelf {
|
|
let callButton = UIBarButtonItem(
|
|
image: UIImage(named: "Phone"),
|
|
style: .plain,
|
|
target: self,
|
|
action: #selector(startCall)
|
|
)
|
|
|
|
navigationItem.rightBarButtonItems = [settingsButtonItem, callButton]
|
|
}
|
|
else {
|
|
navigationItem.rightBarButtonItem = settingsButtonItem
|
|
}
|
|
|
|
default:
|
|
let rightBarButtonItem: UIBarButtonItem = UIBarButtonItem(image: UIImage(named: "Gear"), style: .plain, target: self, action: #selector(openSettings))
|
|
rightBarButtonItem.accessibilityLabel = "Settings button"
|
|
rightBarButtonItem.isAccessibilityElement = true
|
|
|
|
navigationItem.rightBarButtonItems = [rightBarButtonItem]
|
|
}
|
|
}
|
|
}
|
|
|
|
// MARK: - Notifications
|
|
|
|
@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 = tableView.contentInset
|
|
let newContentInset: UIEdgeInsets = UIEdgeInsets(
|
|
top: 0,
|
|
leading: 0,
|
|
bottom: (Values.mediumSpacing + keyboardTop + messageRequestsOffset),
|
|
trailing: 0
|
|
)
|
|
let newContentOffsetY: CGFloat = (tableView.contentOffset.y + (newContentInset.bottom - oldContentInset.bottom))
|
|
let changes = { [weak self] in
|
|
self?.scrollButtonBottomConstraint?.constant = -(keyboardTop + 16)
|
|
self?.messageRequestsViewBotomConstraint?.constant = -(keyboardTop + 16)
|
|
self?.tableView.contentInset = newContentInset
|
|
self?.tableView.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
|
|
)
|
|
}
|
|
|
|
// MARK: - General
|
|
|
|
func addOrRemoveBlockedBanner(threadIsBlocked: Bool) {
|
|
guard threadIsBlocked else {
|
|
UIView.animate(
|
|
withDuration: 0.25,
|
|
animations: { [weak self] in
|
|
self?.blockedBanner.alpha = 0
|
|
},
|
|
completion: { [weak self] _ in
|
|
self?.blockedBanner.alpha = 1
|
|
self?.blockedBanner.removeFromSuperview()
|
|
}
|
|
)
|
|
return
|
|
}
|
|
|
|
self.view.addSubview(self.blockedBanner)
|
|
self.blockedBanner.pin([ UIView.HorizontalEdge.left, UIView.VerticalEdge.top, UIView.HorizontalEdge.right ], to: self.view)
|
|
}
|
|
|
|
func recoverInputView() {
|
|
// This is a workaround for an issue where the textview is not scrollable
|
|
// after the app goes into background and goes back in foreground.
|
|
DispatchQueue.main.async {
|
|
self.snInputView.text = self.snInputView.text
|
|
}
|
|
}
|
|
|
|
// MARK: - UITableViewDataSource
|
|
|
|
func numberOfSections(in tableView: UITableView) -> Int {
|
|
return viewModel.interactionData.count
|
|
}
|
|
|
|
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
|
|
let section: ConversationViewModel.SectionModel = viewModel.interactionData[section]
|
|
|
|
return section.elements.count
|
|
}
|
|
|
|
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
|
|
let section: ConversationViewModel.SectionModel = viewModel.interactionData[indexPath.section]
|
|
|
|
switch section.model {
|
|
case .messages:
|
|
let cellViewModel: MessageViewModel = section.elements[indexPath.row]
|
|
let cell: MessageCell = tableView.dequeue(type: MessageCell.cellType(for: cellViewModel), for: indexPath)
|
|
cell.update(
|
|
with: cellViewModel,
|
|
mediaCache: mediaCache,
|
|
playbackInfo: viewModel.playbackInfo(for: cellViewModel) { updatedInfo, error in
|
|
DispatchQueue.main.async {
|
|
guard error == nil else {
|
|
OWSAlerts.showErrorAlert(message: "INVALID_AUDIO_FILE_ALERT_ERROR_MESSAGE".localized())
|
|
return
|
|
}
|
|
|
|
cell.dynamicUpdate(with: cellViewModel, playbackInfo: updatedInfo)
|
|
}
|
|
},
|
|
lastSearchText: viewModel.lastSearchedText
|
|
)
|
|
cell.delegate = self
|
|
|
|
return cell
|
|
|
|
default: preconditionFailure("Other sections should have no content")
|
|
}
|
|
}
|
|
|
|
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
|
|
let section: ConversationViewModel.SectionModel = viewModel.interactionData[section]
|
|
|
|
switch section.model {
|
|
case .loadOlder, .loadNewer:
|
|
let loadingIndicator: UIActivityIndicatorView = UIActivityIndicatorView(style: .medium)
|
|
loadingIndicator.tintColor = Colors.text
|
|
loadingIndicator.alpha = 0.5
|
|
loadingIndicator.startAnimating()
|
|
|
|
let view: UIView = UIView()
|
|
view.addSubview(loadingIndicator)
|
|
loadingIndicator.center(in: view)
|
|
|
|
return view
|
|
|
|
case .messages: return nil
|
|
}
|
|
}
|
|
|
|
// MARK: - UITableViewDelegate
|
|
|
|
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
|
|
return UITableView.automaticDimension
|
|
}
|
|
|
|
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
|
|
return UITableView.automaticDimension
|
|
}
|
|
|
|
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
|
|
let section: ConversationViewModel.SectionModel = viewModel.interactionData[section]
|
|
|
|
switch section.model {
|
|
case .loadOlder, .loadNewer: return ConversationVC.loadingHeaderHeight
|
|
case .messages: return 0
|
|
}
|
|
}
|
|
|
|
func tableView(_ tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int) {
|
|
guard self.hasPerformedInitialScroll && !self.isLoadingMore else { return }
|
|
|
|
let section: ConversationViewModel.SectionModel = self.viewModel.interactionData[section]
|
|
|
|
switch section.model {
|
|
case .loadOlder, .loadNewer:
|
|
self.isLoadingMore = true
|
|
|
|
DispatchQueue.global(qos: .default).async { [weak self] in
|
|
// Messages are loaded in descending order so 'loadOlder' actually corresponds with
|
|
// 'pageAfter' in this case
|
|
self?.viewModel.pagedDataObserver?.load(section.model == .loadOlder ?
|
|
.pageAfter :
|
|
.pageBefore
|
|
)
|
|
}
|
|
|
|
case .messages: break
|
|
}
|
|
}
|
|
|
|
func scrollToBottom(isAnimated: Bool) {
|
|
guard
|
|
!self.isUserScrolling,
|
|
let messagesSectionIndex: Int = self.viewModel.interactionData
|
|
.firstIndex(where: { $0.model == .messages }),
|
|
!self.viewModel.interactionData[messagesSectionIndex]
|
|
.elements
|
|
.isEmpty
|
|
else { return }
|
|
|
|
// If the last interaction isn't loaded then scroll to the final interactionId on
|
|
// the thread data
|
|
let hasNewerItems: Bool = self.viewModel.interactionData.contains(where: { $0.model == .loadNewer })
|
|
|
|
guard !self.didFinishInitialLayout || !hasNewerItems else {
|
|
let messages: [MessageViewModel] = self.viewModel.interactionData[messagesSectionIndex].elements
|
|
let lastInteractionId: Int64 = self.viewModel.threadData.interactionId
|
|
.defaulting(to: messages[messages.count - 1].id)
|
|
|
|
self.scrollToInteractionIfNeeded(
|
|
with: lastInteractionId,
|
|
position: .bottom,
|
|
isAnimated: true
|
|
)
|
|
return
|
|
}
|
|
|
|
let targetIndexPath: IndexPath = IndexPath(
|
|
row: (self.viewModel.interactionData[messagesSectionIndex].elements.count - 1),
|
|
section: messagesSectionIndex
|
|
)
|
|
self.tableView.scrollToRow(
|
|
at: targetIndexPath,
|
|
at: .bottom,
|
|
animated: isAnimated
|
|
)
|
|
|
|
self.handleInitialOffsetBounceBug(targetIndexPath: targetIndexPath, at: .bottom)
|
|
}
|
|
|
|
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
|
|
}
|
|
|
|
func scrollViewDidEndScrollingAnimation(_ scrollView: UIScrollView) {
|
|
guard
|
|
let focusedInteractionId: Int64 = self.focusedInteractionId,
|
|
self.shouldHighlightNextScrollToInteraction
|
|
else {
|
|
self.focusedInteractionId = nil
|
|
self.shouldHighlightNextScrollToInteraction = false
|
|
return
|
|
}
|
|
|
|
DispatchQueue.main.async { [weak self] in
|
|
self?.highlightCellIfNeeded(interactionId: focusedInteractionId)
|
|
}
|
|
}
|
|
|
|
func updateUnreadCountView(unreadCount: UInt?) {
|
|
let unreadCount: Int = Int(unreadCount ?? 0)
|
|
let fontSize: CGFloat = (unreadCount < 10000 ? Values.verySmallFontSize : 8)
|
|
unreadCountLabel.text = (unreadCount < 10000 ? "\(unreadCount)" : "9999+")
|
|
unreadCountLabel.font = .boldSystemFont(ofSize: fontSize)
|
|
unreadCountView.isHidden = (unreadCount == 0)
|
|
}
|
|
|
|
func getScrollButtonOpacity() -> CGFloat {
|
|
let contentOffsetY = tableView.contentOffset.y
|
|
let x = (lastPageTop - ConversationVC.bottomInset - contentOffsetY).clamp(0, .greatestFiniteMagnitude)
|
|
let a = 1 / (ConversationVC.scrollButtonFullVisibilityThreshold - ConversationVC.scrollButtonNoVisibilityThreshold)
|
|
return a * x
|
|
}
|
|
|
|
// MARK: - Search
|
|
|
|
func conversationSettingsDidRequestConversationSearch(_ conversationSettingsViewController: OWSConversationSettingsViewController) {
|
|
showSearchUI()
|
|
|
|
guard presentedViewController != nil else {
|
|
self.navigationController?.popToViewController(self, animated: true, completion: nil)
|
|
return
|
|
}
|
|
|
|
dismiss(animated: true) {
|
|
self.navigationController?.popToViewController(self, animated: true, completion: nil)
|
|
}
|
|
}
|
|
|
|
func showSearchUI() {
|
|
isShowingSearchUI = true
|
|
|
|
// Search bar
|
|
let searchBar = searchController.uiSearchController.searchBar
|
|
searchBar.setUpSessionStyle()
|
|
|
|
let searchBarContainer = UIView()
|
|
searchBarContainer.layoutMargins = UIEdgeInsets.zero
|
|
searchBar.sizeToFit()
|
|
searchBar.layoutMargins = UIEdgeInsets.zero
|
|
searchBarContainer.set(.height, to: 44)
|
|
searchBarContainer.set(.width, to: UIScreen.main.bounds.width - 32)
|
|
searchBarContainer.addSubview(searchBar)
|
|
navigationItem.titleView = searchBarContainer
|
|
|
|
// On iPad, the cancel button won't show
|
|
// See more https://developer.apple.com/documentation/uikit/uisearchbar/1624283-showscancelbutton?language=objc
|
|
if UIDevice.current.isIPad {
|
|
let ipadCancelButton = UIButton()
|
|
ipadCancelButton.setTitle("Cancel", for: .normal)
|
|
ipadCancelButton.addTarget(self, action: #selector(hideSearchUI), for: .touchUpInside)
|
|
ipadCancelButton.setTitleColor(Colors.text, for: .normal)
|
|
searchBarContainer.addSubview(ipadCancelButton)
|
|
ipadCancelButton.pin(.trailing, to: .trailing, of: searchBarContainer)
|
|
ipadCancelButton.autoVCenterInSuperview()
|
|
searchBar.autoPinEdgesToSuperviewEdges(with: UIEdgeInsets.zero, excludingEdge: .trailing)
|
|
searchBar.pin(.trailing, to: .leading, of: ipadCancelButton, withInset: -Values.smallSpacing)
|
|
} else {
|
|
searchBar.autoPinEdgesToSuperviewMargins()
|
|
}
|
|
|
|
// Nav bar buttons
|
|
updateNavBarButtons(threadData: self.viewModel.threadData, initialVariant: viewModel.initialThreadVariant)
|
|
|
|
// 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
|
|
}
|
|
|
|
@objc func hideSearchUI() {
|
|
isShowingSearchUI = false
|
|
navigationItem.titleView = titleView
|
|
updateNavBarButtons(threadData: self.viewModel.threadData, initialVariant: viewModel.initialThreadVariant)
|
|
|
|
let navBar: OWSNavigationBar? = navigationController?.navigationBar as? OWSNavigationBar
|
|
navBar?.stubbedNextResponder = nil
|
|
becomeFirstResponder()
|
|
reloadInputViews()
|
|
}
|
|
|
|
func didDismissSearchController(_ searchController: UISearchController) {
|
|
hideSearchUI()
|
|
}
|
|
|
|
func conversationSearchController(_ conversationSearchController: ConversationSearchController, didUpdateSearchResults results: [Int64]?, searchText: String?) {
|
|
viewModel.lastSearchedText = searchText
|
|
tableView.reloadRows(at: tableView.indexPathsForVisibleRows ?? [], with: UITableView.RowAnimation.none)
|
|
}
|
|
|
|
func conversationSearchController(_ conversationSearchController: ConversationSearchController, didSelectInteractionId interactionId: Int64) {
|
|
scrollToInteractionIfNeeded(with: interactionId, highlight: true)
|
|
}
|
|
|
|
func scrollToInteractionIfNeeded(
|
|
with interactionId: Int64,
|
|
position: UITableView.ScrollPosition = .middle,
|
|
isAnimated: Bool = true,
|
|
highlight: Bool = false
|
|
) {
|
|
// Store the info incase we need to load more data (call will be re-triggered)
|
|
self.focusedInteractionId = interactionId
|
|
self.shouldHighlightNextScrollToInteraction = highlight
|
|
|
|
// Ensure the target interaction has been loaded
|
|
guard
|
|
let messageSectionIndex: Int = self.viewModel.interactionData
|
|
.firstIndex(where: { $0.model == .messages }),
|
|
let targetMessageIndex = self.viewModel.interactionData[messageSectionIndex]
|
|
.elements
|
|
.firstIndex(where: { $0.id == interactionId })
|
|
else {
|
|
// If not the make sure we have finished the initial layout before trying to
|
|
// load the up until the specified interaction
|
|
guard self.didFinishInitialLayout else { return }
|
|
|
|
self.isLoadingMore = true
|
|
self.searchController.resultsBar.startLoading()
|
|
|
|
DispatchQueue.global(qos: .default).async { [weak self] in
|
|
self?.viewModel.pagedDataObserver?.load(.untilInclusive(
|
|
id: interactionId,
|
|
padding: 5
|
|
))
|
|
}
|
|
return
|
|
}
|
|
|
|
let targetIndexPath: IndexPath = IndexPath(
|
|
row: targetMessageIndex,
|
|
section: messageSectionIndex
|
|
)
|
|
|
|
// If we aren't animating or aren't highlighting then everything can be run immediately
|
|
guard isAnimated && highlight else {
|
|
self.tableView.scrollToRow(
|
|
at: targetIndexPath,
|
|
at: position,
|
|
animated: (self.didFinishInitialLayout && isAnimated)
|
|
)
|
|
self.handleInitialOffsetBounceBug(targetIndexPath: targetIndexPath, at: position)
|
|
|
|
// If we haven't finished the initial layout then we want to delay the highlight slightly
|
|
// so it doesn't look buggy with the push transition
|
|
if highlight {
|
|
DispatchQueue.main.asyncAfter(deadline: .now() + .milliseconds(self.didFinishInitialLayout ? 0 : 150)) { [weak self] in
|
|
self?.highlightCellIfNeeded(interactionId: interactionId)
|
|
}
|
|
}
|
|
|
|
self.shouldHighlightNextScrollToInteraction = false
|
|
self.focusedInteractionId = nil
|
|
return
|
|
}
|
|
|
|
// If we are animating and highlighting then determine if we want to scroll to the target
|
|
// cell (if we try to trigger the `scrollToRow` call and the animation doesn't occur then
|
|
// the highlight will not be triggered so if a cell is entirely on the screen then just
|
|
// don't bother scrolling)
|
|
let targetRect: CGRect = self.tableView.rectForRow(at: targetIndexPath)
|
|
|
|
guard !self.tableView.bounds.contains(targetRect) else {
|
|
self.highlightCellIfNeeded(interactionId: interactionId)
|
|
return
|
|
}
|
|
|
|
self.tableView.scrollToRow(at: targetIndexPath, at: position, animated: true)
|
|
self.handleInitialOffsetBounceBug(targetIndexPath: targetIndexPath, at: position)
|
|
}
|
|
|
|
func highlightCellIfNeeded(interactionId: Int64) {
|
|
self.shouldHighlightNextScrollToInteraction = false
|
|
self.focusedInteractionId = nil
|
|
|
|
// Trigger on the next run loop incase we are still finishing some other animation
|
|
DispatchQueue.main.async {
|
|
self.tableView
|
|
.visibleCells
|
|
.first(where: { ($0 as? VisibleMessageCell)?.viewModel?.id == interactionId })
|
|
.asType(VisibleMessageCell.self)?
|
|
.highlight()
|
|
}
|
|
}
|
|
|
|
private func handleInitialOffsetBounceBug(targetIndexPath: IndexPath, at position: UITableView.ScrollPosition) {
|
|
/// Note: This code is a hack to prevent a weird 'bounce' behaviour that occurs when triggering the initial scroll due
|
|
/// to the UITableView properly calculating it's cell sizes (it seems to layout ~3 times each with slightly different sizes)
|
|
if !self.hasPerformedInitialScroll {
|
|
let initialUpdateTime: CFTimeInterval = CACurrentMediaTime()
|
|
var lastSize: CGSize = .zero
|
|
|
|
self.tableView.afterNextLayoutSubviews(
|
|
when: { [weak self] numSections, numRowInSections, updatedContentSize in
|
|
// If too much time has passed or the section/row count doesn't match then
|
|
// just stop the callback
|
|
guard
|
|
(CACurrentMediaTime() - initialUpdateTime) < 2 &&
|
|
lastSize != updatedContentSize &&
|
|
numSections > targetIndexPath.section &&
|
|
numRowInSections[targetIndexPath.section] > targetIndexPath.row
|
|
else { return true }
|
|
|
|
lastSize = updatedContentSize
|
|
|
|
self?.tableView.scrollToRow(
|
|
at: targetIndexPath,
|
|
at: position,
|
|
animated: false
|
|
)
|
|
|
|
return false
|
|
},
|
|
then: {}
|
|
)
|
|
}
|
|
}
|
|
}
|