177 lines
8.3 KiB
Swift
177 lines
8.3 KiB
Swift
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@objc(LKFriendRequestView)
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final class FriendRequestView : UIView {
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private let message: TSMessage
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@objc weak var delegate: FriendRequestViewDelegate?
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private var kind: Kind {
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let isIncoming = message.interactionType() == .incomingMessage
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return isIncoming ? .incoming : .outgoing
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}
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// MARK: Types
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enum Kind : String { case incoming, outgoing }
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// MARK: Components
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private lazy var spacer1: UIView = {
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let result = UIView()
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result.set(.height, to: 12)
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return result
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}()
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private lazy var spacer2: UIView = {
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let result = UIView()
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result.set(.height, to: Values.mediumSpacing)
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return result
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}()
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private lazy var label: UILabel = {
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let result = UILabel()
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result.textColor = Colors.text
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result.font = .systemFont(ofSize: Values.smallFontSize)
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result.numberOfLines = 0
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result.textAlignment = .center
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result.lineBreakMode = .byWordWrapping
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return result
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}()
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private lazy var buttonStackView: UIStackView = {
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let result = UIStackView()
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result.axis = .horizontal
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result.spacing = Values.mediumSpacing
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result.distribution = .fillEqually
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return result
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}()
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// MARK: Lifecycle
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@objc init(message: TSMessage) {
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self.message = message
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super.init(frame: CGRect.zero)
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initialize()
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}
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required init?(coder: NSCoder) { fatalError("Using FriendRequestView.init(coder:) isn't allowed. Use FriendRequestView.init(message:) instead.") }
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override init(frame: CGRect) { fatalError("Using FriendRequestView.init(frame:) isn't allowed. Use FriendRequestView.init(message:) instead.") }
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private func initialize() {
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// Set up UI
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let mainStackView = UIStackView()
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mainStackView.axis = .vertical
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mainStackView.distribution = .fill
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mainStackView.layoutMargins = UIEdgeInsets(top: 0, left: Values.largeSpacing, bottom: 0, right: Values.largeSpacing)
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mainStackView.isLayoutMarginsRelativeArrangement = true
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mainStackView.addArrangedSubview(spacer1)
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mainStackView.addArrangedSubview(label)
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switch kind {
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case .incoming:
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mainStackView.addArrangedSubview(spacer2)
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mainStackView.addArrangedSubview(buttonStackView)
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let declineButton = UIButton()
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declineButton.set(.height, to: Values.mediumButtonHeight)
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declineButton.layer.cornerRadius = Values.modalButtonCornerRadius
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declineButton.backgroundColor = Colors.buttonBackground
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declineButton.titleLabel!.font = .systemFont(ofSize: Values.smallFontSize)
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declineButton.setTitleColor(Colors.text, for: UIControl.State.normal)
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declineButton.setTitle(NSLocalizedString("Decline", comment: ""), for: UIControl.State.normal)
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declineButton.addTarget(self, action: #selector(decline), for: UIControl.Event.touchUpInside)
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buttonStackView.addArrangedSubview(declineButton)
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let acceptButton = UIButton()
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acceptButton.set(.height, to: Values.mediumButtonHeight)
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acceptButton.layer.cornerRadius = Values.modalButtonCornerRadius
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acceptButton.backgroundColor = Colors.accent
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acceptButton.titleLabel!.font = .systemFont(ofSize: Values.smallFontSize)
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acceptButton.setTitleColor(Colors.text, for: UIControl.State.normal)
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acceptButton.setTitle(NSLocalizedString("Accept", comment: ""), for: UIControl.State.normal)
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acceptButton.addTarget(self, action: #selector(accept), for: UIControl.Event.touchUpInside)
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buttonStackView.addArrangedSubview(acceptButton)
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case .outgoing: break
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}
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addSubview(mainStackView)
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mainStackView.pin(to: self)
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updateUI()
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// Observe friend request status changes
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NotificationCenter.default.addObserver(self, selector: #selector(handleFriendRequestStatusChangedNotification), name: .messageFriendRequestStatusChanged, object: nil)
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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: Updating
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@objc private func handleFriendRequestStatusChangedNotification(_ notification: Notification) {
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let messageID = notification.object as! String
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guard messageID == message.uniqueId && TSMessage.fetch(uniqueId: messageID) != nil else { return } // It's possible for the message to be deleted at this point
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message.reload()
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updateUI()
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}
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private func updateUI() {
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switch kind {
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case .incoming:
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guard let message = message as? TSIncomingMessage else { preconditionFailure() }
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buttonStackView.isHidden = message.friendRequestStatus != .pending
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spacer2.isHidden = buttonStackView.isHidden
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let format: String = {
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switch (message.friendRequestStatus) {
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case .none, .sendingOrFailed: preconditionFailure()
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case .pending: return NSLocalizedString("%@ sent you a session request", comment: "")
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case .accepted: return NSLocalizedString("You've accepted %@'s session request", comment: "")
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case .declined: return NSLocalizedString("You've declined %@'s session request", comment: "")
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case .expired: return NSLocalizedString("%@'s session request has expired", comment: "")
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default: preconditionFailure()
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}
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}()
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let contactID = message.authorId
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let displayName = DisplayNameUtilities.getPrivateChatDisplayName(for: contactID) ?? contactID
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label.text = String(format: format, displayName)
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case .outgoing:
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guard let message = message as? TSOutgoingMessage else { preconditionFailure() }
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let format: String? = {
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switch (message.friendRequestStatus) {
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case .none: preconditionFailure()
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case .sendingOrFailed: return nil
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case .pending: return NSLocalizedString("You've sent %@ a session request", comment: "")
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case .accepted: return NSLocalizedString("%@ accepted your session request", comment: "")
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case .declined: preconditionFailure()
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case .expired: return NSLocalizedString("Your session request to %@ has expired", comment: "")
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default: preconditionFailure()
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}
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}()
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if let format = format {
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let contactID = message.thread.contactIdentifier()!
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let displayName = DisplayNameUtilities.getPrivateChatDisplayName(for: contactID) ?? contactID
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label.text = String(format: format, displayName)
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}
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label.isHidden = (format == nil)
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spacer1.isHidden = (label.isHidden)
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}
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}
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// MARK: Interaction
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@objc private func accept() {
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guard let message = message as? TSIncomingMessage else { preconditionFailure() }
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message.saveFriendRequestStatus(.accepted, with: nil)
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delegate?.acceptFriendRequest(message)
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}
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@objc private func decline() {
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guard let message = message as? TSIncomingMessage else { preconditionFailure() }
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message.saveFriendRequestStatus(.declined, with: nil)
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delegate?.declineFriendRequest(message)
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}
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// MARK: Measuring
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@objc static func calculateHeight(message: TSMessage, conversationStyle: ConversationStyle) -> CGFloat {
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let width = conversationStyle.contentWidth - 2 * Values.largeSpacing
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let dummyFriendRequestView = FriendRequestView(message: message)
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let hasTopSpacer = !dummyFriendRequestView.spacer1.isHidden
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let topSpacing: CGFloat = hasTopSpacer ? 12 : 0
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let hasLabel = !dummyFriendRequestView.label.isHidden
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let labelHeight = hasLabel ? dummyFriendRequestView.label.sizeThatFits(CGSize(width: width, height: CGFloat.greatestFiniteMagnitude)).height : 0
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let hasButtonStackView = dummyFriendRequestView.buttonStackView.superview != nil && !dummyFriendRequestView.buttonStackView.isHidden
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let buttonHeight = hasButtonStackView ? Values.mediumButtonHeight + Values.mediumSpacing : 0 // Values.mediumSpacing is the height of the spacer
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let totalHeight = topSpacing + labelHeight + buttonHeight
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return totalHeight.rounded(.up)
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}
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}
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