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| 1 | +// |
| 2 | +// MessagesView.swift |
| 3 | +// ChatExample |
| 4 | +// |
| 5 | +// Created by Kino Roy on 2020-07-18. |
| 6 | +// Copyright © 2020 MessageKit. All rights reserved. |
| 7 | +// |
| 8 | + |
| 9 | +#if canImport(SwiftUI) |
| 10 | + |
| 11 | +import SwiftUI |
| 12 | +import MessageKit |
| 13 | + |
| 14 | +class MessageSwiftUIVC: MessagesViewController { |
| 15 | + override func viewDidAppear(_ animated: Bool) { |
| 16 | + super.viewDidAppear(animated) |
| 17 | + becomeFirstResponder() |
| 18 | + } |
| 19 | +} |
| 20 | + |
| 21 | +@available(iOS 13.0.0, *) |
| 22 | +struct MessagesView: UIViewControllerRepresentable { |
| 23 | + |
| 24 | + @Binding var messages: [MessageType] |
| 25 | + |
| 26 | + func makeUIViewController(context: Context) -> MessagesViewController { |
| 27 | + let messagesVC = MessageSwiftUIVC() |
| 28 | + |
| 29 | + messagesVC.messagesCollectionView.messagesDisplayDelegate = context.coordinator |
| 30 | + messagesVC.messagesCollectionView.messagesLayoutDelegate = context.coordinator |
| 31 | + messagesVC.messagesCollectionView.messagesDataSource = context.coordinator |
| 32 | + |
| 33 | + return messagesVC |
| 34 | + } |
| 35 | + |
| 36 | + func updateUIViewController(_ uiViewController: MessagesViewController, context: Context) { |
| 37 | + if !uiViewController.isFirstResponder { |
| 38 | + uiViewController.becomeFirstResponder() |
| 39 | + } |
| 40 | + uiViewController.messagesCollectionView.reloadData() |
| 41 | + } |
| 42 | + |
| 43 | + func makeCoordinator() -> Coordinator { |
| 44 | + return Coordinator(messages: $messages) |
| 45 | + } |
| 46 | + |
| 47 | + final class Coordinator { |
| 48 | + var messages: Binding<[MessageType]> |
| 49 | + init(messages: Binding<[MessageType]>) { |
| 50 | + self.messages = messages |
| 51 | + } |
| 52 | + } |
| 53 | + |
| 54 | +} |
| 55 | + |
| 56 | +@available(iOS 13.0.0, *) |
| 57 | +extension MessagesView.Coordinator: MessagesDataSource { |
| 58 | + func currentSender() -> SenderType { |
| 59 | + return MockUser(senderId: "", displayName: "") |
| 60 | + } |
| 61 | + |
| 62 | + func messageForItem(at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> MessageType { |
| 63 | + return messages.wrappedValue[indexPath.section] |
| 64 | + } |
| 65 | + |
| 66 | + func numberOfSections(in messagesCollectionView: MessagesCollectionView) -> Int { |
| 67 | + return messages.wrappedValue.count |
| 68 | + } |
| 69 | +} |
| 70 | + |
| 71 | +@available(iOS 13.0.0, *) |
| 72 | +extension MessagesView.Coordinator: MessagesLayoutDelegate, MessagesDisplayDelegate { |
| 73 | + |
| 74 | +} |
| 75 | + |
| 76 | +@available(iOS 13.0.0, *) |
| 77 | +struct MessageViewPreviewWrapper: View { |
| 78 | + @State var messages = [MessageType]() |
| 79 | + var body: some View { |
| 80 | + MessagesView(messages: $messages).onAppear { |
| 81 | + SampleData.shared.getMessages(count: 20) { messages in |
| 82 | + self.messages.append(contentsOf: messages) |
| 83 | + } |
| 84 | + } |
| 85 | + } |
| 86 | +} |
| 87 | + |
| 88 | +@available(iOS 13.0.0, *) |
| 89 | +struct MessagesView_Previews: PreviewProvider { |
| 90 | + static var previews: some View { |
| 91 | + MessageViewPreviewWrapper() |
| 92 | + } |
| 93 | +} |
| 94 | + |
| 95 | +#endif |
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