mirror of https://github.com/Wilfred/difftastic/
115 lines
4.1 KiB
Swift
115 lines
4.1 KiB
Swift
/*
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MIT License
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Copyright (c) 2017-2019 MessageKit
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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import UIKit
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/// A subclass of `MessageContentCell` used to display video and audio messages.
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open class MediaMessageCell: MessageContentCell {
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// ^ keyword
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/// The play button view to display on video messages.
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open lazy var playButtonView: PlayButtonView = {
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// ^ keyword
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// ^ punctuation.bracket
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let playButtonView = PlayButtonView()
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return playButtonView
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}()
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// ^ punctuation.bracket
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// ^ punctuation.bracket
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/// The image view display the media content.
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open var imageView: UIImageView = {
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let imageView = UIImageView()
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imageView.contentMode = .scaleAspectFill
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return imageView
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}()
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// MARK: - Methods
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/// Responsible for setting up the constraints of the cell's subviews.
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open func setupConstraints() {
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imageView.fillSuperview()
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playButtonView.centerInSuperview()
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playButtonView.constraint(equalTo: CGSize(width: 35, height: 35))
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}
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open override func setupSubviews() {
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super.setupSubviews()
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messageContainerView.addSubview(imageView)
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messageContainerView.addSubview(playButtonView)
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setupConstraints()
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}
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open override func prepareForReuse() {
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super.prepareForReuse()
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self.imageView.image = nil
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}
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open override func configure(with message: MessageType, at indexPath: IndexPath, and messagesCollectionView: MessagesCollectionView) {
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super.configure(with: message, at: indexPath, and: messagesCollectionView)
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guard let displayDelegate = messagesCollectionView.messagesDisplayDelegate else {
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// ^ conditional
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// ^ keyword
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// ^ keyword
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fatalError(MessageKitError.nilMessagesDisplayDelegate)
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}
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switch message.kind {
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// ^ conditional
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case .photo(let mediaItem):
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// ^ keyword
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// ^ punctuation.delimiter
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// ^ variable
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imageView.image = mediaItem.image ?? mediaItem.placeholderImage
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// ^ operator
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playButtonView.isHidden = true
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// ^ boolean
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case .video(let mediaItem):
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imageView.image = mediaItem.image ?? mediaItem.placeholderImage
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playButtonView.isHidden = false
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// ^ boolean
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default:
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// ^ keyword
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break
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// ^ repeat
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}
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displayDelegate.configureMediaMessageImageView(imageView, for: message, at: indexPath, in: messagesCollectionView)
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}
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/// Handle tap gesture on contentView and its subviews.
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open override func handleTapGesture(_ gesture: UIGestureRecognizer) {
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let touchLocation = gesture.location(in: imageView)
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guard imageView.frame.contains(touchLocation) else {
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super.handleTapGesture(gesture)
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return
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}
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delegate?.didTapImage(in: self)
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}
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}
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