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import UIKit
final class ConversationCell : UITableViewCell {
var threadViewModel: ThreadViewModel! { didSet { update() } }
static let reuseIdentifier = "ConversationCell"
// MARK: Components
private let accentView = UIView()
private lazy var profilePictureView = ProfilePictureView()
private lazy var displayNameLabel: UILabel = {
let result = UILabel()
result.font = .boldSystemFont(ofSize: Values.mediumFontSize)
result.textColor = Colors.text
result.lineBreakMode = .byTruncatingTail
return result
}()
private lazy var timestampLabel: UILabel = {
let result = UILabel()
result.font = .systemFont(ofSize: Values.smallFontSize)
result.textColor = Colors.text
result.lineBreakMode = .byTruncatingTail
result.alpha = Values.conversationCellTimestampOpacity
return result
}()
private lazy var snippetLabel: UILabel = {
let result = UILabel()
result.font = .systemFont(ofSize: Values.smallFontSize)
result.textColor = Colors.text
result.lineBreakMode = .byTruncatingTail
return result
}()
private lazy var typingIndicatorView = TypingIndicatorView()
private lazy var statusIndicatorView: UIImageView = {
let result = UIImageView()
result.contentMode = .scaleAspectFit
result.layer.cornerRadius = Values.conversationCellStatusIndicatorSize / 2
result.layer.masksToBounds = true
return result
}()
// MARK: Initialization
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
setUpViewHierarchy()
}
required init?(coder: NSCoder) {
super.init(coder: coder)
setUpViewHierarchy()
}
private func setUpViewHierarchy() {
let cellHeight: CGFloat = 68
// Set the cell background color
backgroundColor = Colors.cellBackground
// Set up the highlight color
let selectedBackgroundView = UIView()
selectedBackgroundView.backgroundColor = Colors.cellSelected
self.selectedBackgroundView = selectedBackgroundView
// Set up the accent view
accentView.set(.width, to: Values.accentLineThickness)
accentView.set(.height, to: cellHeight)
// Set up the profile picture view
let profilePictureViewSize = Values.mediumProfilePictureSize
profilePictureView.set(.width, to: profilePictureViewSize)
profilePictureView.set(.height, to: profilePictureViewSize)
profilePictureView.size = profilePictureViewSize
// Set up the label stack view
let topLabelSpacer = UIView.hStretchingSpacer()
let topLabelStackView = UIStackView(arrangedSubviews: [ displayNameLabel, topLabelSpacer, timestampLabel ])
topLabelStackView.axis = .horizontal
topLabelStackView.alignment = .center
topLabelStackView.spacing = Values.smallSpacing / 2 // Effectively Values.smallSpacing because there'll be spacing before and after the invisible spacer
let snippetLabelContainer = UIView()
snippetLabelContainer.addSubview(snippetLabel)
snippetLabelContainer.addSubview(typingIndicatorView)
let bottomLabelSpacer = UIView.hStretchingSpacer()
let bottomLabelStackView = UIStackView(arrangedSubviews: [ snippetLabelContainer, bottomLabelSpacer, statusIndicatorView ])
bottomLabelStackView.axis = .horizontal
bottomLabelStackView.alignment = .center
bottomLabelStackView.spacing = Values.smallSpacing / 2 // Effectively Values.smallSpacing because there'll be spacing before and after the invisible spacer
let labelContainerView = UIView()
labelContainerView.addSubview(topLabelStackView)
labelContainerView.addSubview(bottomLabelStackView)
// Set up the main stack view
let stackView = UIStackView(arrangedSubviews: [ accentView, profilePictureView, labelContainerView ])
stackView.axis = .horizontal
stackView.alignment = .center
stackView.spacing = Values.mediumSpacing
contentView.addSubview(stackView)
// Set up the constraints
accentView.pin(.top, to: .top, of: contentView)
accentView.pin(.bottom, to: .bottom, of: contentView)
// The three lines below are part of a workaround for a weird layout bug
topLabelStackView.set(.width, to: UIScreen.main.bounds.width - Values.accentLineThickness - Values.mediumSpacing - profilePictureViewSize - Values.mediumSpacing - Values.mediumSpacing)
topLabelStackView.set(.height, to: 20)
topLabelSpacer.set(.height, to: 20)
timestampLabel.setContentCompressionResistancePriority(.required, for: NSLayoutConstraint.Axis.horizontal)
// The three lines below are part of a workaround for a weird layout bug
bottomLabelStackView.set(.width, to: UIScreen.main.bounds.width - Values.accentLineThickness - Values.mediumSpacing - profilePictureViewSize - Values.mediumSpacing - Values.mediumSpacing)
bottomLabelStackView.set(.height, to: 18)
bottomLabelSpacer.set(.height, to: 18)
statusIndicatorView.set(.width, to: Values.conversationCellStatusIndicatorSize)
statusIndicatorView.set(.height, to: Values.conversationCellStatusIndicatorSize)
snippetLabel.pin(to: snippetLabelContainer)
typingIndicatorView.pin(.leading, to: .leading, of: snippetLabelContainer)
typingIndicatorView.centerYAnchor.constraint(equalTo: snippetLabel.centerYAnchor).isActive = true
// Not using a stack view for this is part of a workaround for a weird layout bug
topLabelStackView.pin(.leading, to: .leading, of: labelContainerView)
topLabelStackView.pin(.top, to: .top, of: labelContainerView, withInset: 12)
topLabelStackView.pin(.trailing, to: .trailing, of: labelContainerView)
bottomLabelStackView.pin(.leading, to: .leading, of: labelContainerView)
bottomLabelStackView.pin(.top, to: .bottom, of: topLabelStackView, withInset: 6)
labelContainerView.pin(.bottom, to: .bottom, of: bottomLabelStackView, withInset: 12)
// The two lines below are part of a workaround for a weird layout bug
labelContainerView.set(.width, to: UIScreen.main.bounds.width - Values.accentLineThickness - Values.mediumSpacing - profilePictureViewSize - Values.mediumSpacing - Values.mediumSpacing)
labelContainerView.set(.height, to: cellHeight)
stackView.pin(.leading, to: .leading, of: contentView)
stackView.pin(.top, to: .top, of: contentView)
// The two lines below are part of a workaround for a weird layout bug
stackView.set(.width, to: UIScreen.main.bounds.width - Values.mediumSpacing)
stackView.set(.height, to: cellHeight)
}
// MARK: Updating
private func update() {
AssertIsOnMainThread()
let thread = threadViewModel.threadRecord
guard let threadID = thread.uniqueId else { return }
MentionsManager.populateUserPublicKeyCacheIfNeeded(for: threadID) // FIXME: This is a terrible place to do this
let isBlocked: Bool
if let thread = thread as? TSContactThread {
isBlocked = SSKEnvironment.shared.blockingManager.isRecipientIdBlocked(thread.contactIdentifier())
} else {
isBlocked = false
}
if isBlocked {
accentView.backgroundColor = Colors.destructive
accentView.alpha = 1
} else {
accentView.backgroundColor = Colors.accent
accentView.alpha = threadViewModel.hasUnreadMessages ? 1 : 0.0001 // Setting the alpha to exactly 0 causes an issue on iOS 12
}
profilePictureView.update(for: thread)
displayNameLabel.text = getDisplayName()
timestampLabel.text = DateUtil.formatDateShort(threadViewModel.lastMessageDate)
if SSKEnvironment.shared.typingIndicators.typingRecipientId(forThread: thread) != nil {
snippetLabel.text = ""
typingIndicatorView.isHidden = false
typingIndicatorView.startAnimation()
} else {
snippetLabel.attributedText = getSnippet()
typingIndicatorView.isHidden = true
typingIndicatorView.stopAnimation()
}
statusIndicatorView.backgroundColor = nil
let lastMessage = threadViewModel.lastMessageForInbox
if let lastMessage = lastMessage as? TSOutgoingMessage {
let image: UIImage
let status = MessageRecipientStatusUtils.recipientStatus(outgoingMessage: lastMessage)
switch status {
case .calculatingPoW, .uploading, .sending: image = #imageLiteral(resourceName: "CircleDotDotDot").asTintedImage(color: Colors.text)!
case .sent, .skipped, .delivered: image = #imageLiteral(resourceName: "CircleCheck").asTintedImage(color: Colors.text)!
case .read:
statusIndicatorView.backgroundColor = isLightMode ? .black : .white
image = isLightMode ? #imageLiteral(resourceName: "FilledCircleCheckLightMode") : #imageLiteral(resourceName: "FilledCircleCheckDarkMode")
case .failed: image = #imageLiteral(resourceName: "message_status_failed").asTintedImage(color: Colors.text)!
}
statusIndicatorView.image = image
statusIndicatorView.isHidden = false
} else {
statusIndicatorView.isHidden = true
}
}
private func getDisplayName() -> String {
if threadViewModel.isGroupThread {
if threadViewModel.name.isEmpty {
return GroupDisplayNameUtilities.getDefaultDisplayName(for: threadViewModel.threadRecord as! TSGroupThread)
} else {
return threadViewModel.name
}
} else {
if threadViewModel.threadRecord.isNoteToSelf() {
return NSLocalizedString("NOTE_TO_SELF", comment: "")
} else {
let hexEncodedPublicKey = threadViewModel.contactIdentifier!
return UserDisplayNameUtilities.getPrivateChatDisplayName(for: hexEncodedPublicKey) ?? hexEncodedPublicKey
}
}
}
private func getSnippet() -> NSMutableAttributedString {
let result = NSMutableAttributedString()
if threadViewModel.isMuted {
result.append(NSAttributedString(string: "\u{e067} ", attributes: [ .font : UIFont.ows_elegantIconsFont(10), .foregroundColor : Colors.unimportant ]))
}
if let rawSnippet = threadViewModel.lastMessageText {
let snippet = MentionUtilities.highlightMentions(in: rawSnippet, threadID: threadViewModel.threadRecord.uniqueId!)
let font = threadViewModel.hasUnreadMessages ? UIFont.boldSystemFont(ofSize: Values.smallFontSize) : UIFont.systemFont(ofSize: Values.smallFontSize)
result.append(NSAttributedString(string: snippet, attributes: [ .font : font, .foregroundColor : Colors.text ]))
}
return result
}
}