A private messenger for iOS.
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final class ConversationTitleView : UIView {
private let thread: TSThread
override var intrinsicContentSize: CGSize {
return UIView.layoutFittingExpandedSize
}
// MARK: UI Components
private lazy var titleLabel: UILabel = {
let result = UILabel()
result.textColor = Colors.text
result.font = .boldSystemFont(ofSize: Values.mediumFontSize)
result.lineBreakMode = .byTruncatingTail
return result
}()
private lazy var subtitleLabel: UILabel = {
let result = UILabel()
result.textColor = Colors.text
result.font = .systemFont(ofSize: 13)
result.lineBreakMode = .byTruncatingTail
return result
}()
// MARK: Lifecycle
init(thread: TSThread) {
self.thread = thread
super.init(frame: CGRect.zero)
initialize()
}
override init(frame: CGRect) {
preconditionFailure("Use init(thread:) instead.")
}
required init?(coder: NSCoder) {
preconditionFailure("Use init(coder:) instead.")
}
private func initialize() {
let stackView = UIStackView(arrangedSubviews: [ titleLabel, subtitleLabel ])
stackView.axis = .vertical
stackView.alignment = .center
stackView.isLayoutMarginsRelativeArrangement = true
stackView.layoutMargins = UIEdgeInsets(top: 0, left: 8, bottom: 0, right: 0)
addSubview(stackView)
stackView.pin(to: self)
let notificationCenter = NotificationCenter.default
notificationCenter.addObserver(self, selector: #selector(update), name: Notification.Name.groupThreadUpdated, object: nil)
notificationCenter.addObserver(self, selector: #selector(update), name: Notification.Name.muteSettingUpdated, object: nil)
notificationCenter.addObserver(self, selector: #selector(update), name: Notification.Name.contactUpdated, object: nil)
update()
}
deinit {
NotificationCenter.default.removeObserver(self)
}
// MARK: Updating
@objc private func update() {
titleLabel.text = getTitle()
let subtitle = getSubtitle()
subtitleLabel.attributedText = subtitle
let titleFontSize = (subtitle != nil) ? Values.mediumFontSize : Values.veryLargeFontSize
titleLabel.font = .boldSystemFont(ofSize: titleFontSize)
}
// MARK: General
private func getTitle() -> String {
if let thread = thread as? TSGroupThread {
return thread.groupModel.groupName!
} else if thread.isNoteToSelf() {
return "Note to Self"
} else {
let sessionID = thread.contactIdentifier()!
var result = sessionID
Storage.read { transaction in
result = Storage.shared.getContact(with: sessionID)?.displayName(for: .regular) ?? "Anonymous"
}
return result
}
}
private func getSubtitle() -> NSAttributedString? {
if let muteEndDate = thread.mutedUntilDate, thread.isMuted {
let result = NSMutableAttributedString()
result.append(NSAttributedString(string: "\u{e067} ", attributes: [ .font : UIFont.ows_elegantIconsFont(10), .foregroundColor : Colors.text ]))
let formatter = DateFormatter()
formatter.locale = Locale.current
formatter.timeStyle = .medium
formatter.dateStyle = .medium
result.append(NSAttributedString(string: "Muted until " + formatter.string(from: muteEndDate)))
return result
} else if let thread = self.thread as? TSGroupThread {
var userCount: Int?
switch thread.groupModel.groupType {
case .closedGroup: userCount = thread.groupModel.groupMemberIds.count
case .openGroup:
if let openGroup = Storage.shared.getOpenGroup(for: self.thread.uniqueId!) {
userCount = Storage.shared.getUserCount(forOpenGroupWithID: openGroup.id)
}
default: break
}
if let userCount = userCount {
return NSAttributedString(string: "\(userCount) members")
}
}
return nil
}
}