95 lines
3.0 KiB
Swift
95 lines
3.0 KiB
Swift
// Copyright © 2022 Rangeproof Pty Ltd. All rights reserved.
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import UIKit
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import SessionUIKit
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import SessionMessagingKit
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// Assumptions
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// • We'll never encounter an outgoing typing indicator.
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// • Typing indicators are only sent in contact threads.
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final class TypingIndicatorCell: MessageCell {
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// MARK: - UI
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private lazy var bubbleView: UIView = {
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let result: UIView = UIView()
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result.layer.cornerRadius = VisibleMessageCell.smallCornerRadius
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result.backgroundColor = Colors.receivedMessageBackground
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return result
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}()
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private let bubbleViewMaskLayer: CAShapeLayer = CAShapeLayer()
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private lazy var typingIndicatorView: TypingIndicatorView = TypingIndicatorView()
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// MARK: - Lifecycle
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override func setUpViewHierarchy() {
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super.setUpViewHierarchy()
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// Bubble view
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addSubview(bubbleView)
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bubbleView.pin(.left, to: .left, of: self, withInset: VisibleMessageCell.contactThreadHSpacing)
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bubbleView.pin(.top, to: .top, of: self, withInset: 1)
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// Typing indicator view
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bubbleView.addSubview(typingIndicatorView)
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typingIndicatorView.pin(to: bubbleView, withInset: 12)
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}
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// MARK: - Updating
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override func update(with cellViewModel: MessageViewModel, mediaCache: NSCache<NSString, AnyObject>, playbackInfo: ConversationViewModel.PlaybackInfo?, lastSearchText: String?) {
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guard cellViewModel.cellType == .typingIndicator else { return }
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self.viewModel = cellViewModel
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// Bubble view
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updateBubbleViewCorners()
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// Typing indicator view
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typingIndicatorView.startAnimation()
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}
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override func dynamicUpdate(with cellViewModel: MessageViewModel, playbackInfo: ConversationViewModel.PlaybackInfo?) {
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}
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override func layoutSubviews() {
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super.layoutSubviews()
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updateBubbleViewCorners()
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}
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private func updateBubbleViewCorners() {
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let maskPath = UIBezierPath(
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roundedRect: bubbleView.bounds,
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byRoundingCorners: getCornersToRound(),
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cornerRadii: CGSize(
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width: VisibleMessageCell.largeCornerRadius,
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height: VisibleMessageCell.largeCornerRadius)
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)
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bubbleViewMaskLayer.path = maskPath.cgPath
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bubbleView.layer.mask = bubbleViewMaskLayer
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}
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override func prepareForReuse() {
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super.prepareForReuse()
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typingIndicatorView.stopAnimation()
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}
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// MARK: - Convenience
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private func getCornersToRound() -> UIRectCorner {
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guard viewModel?.isOnlyMessageInCluster == false else { return .allCorners }
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switch viewModel?.positionInCluster {
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case .top: return [ .topLeft, .topRight, .bottomRight ]
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case .middle: return [ .topRight, .bottomRight ]
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case .bottom: return [ .topRight, .bottomRight, .bottomLeft ]
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case .none: return .allCorners
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}
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}
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}
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