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# Conflicts: # Example/ChatExample.xcodeproj/project.pbxproj # Example/Sources/View Controllers/LaunchViewController.swift # README.md
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| // | ||
| // MessagesView.swift | ||
| // ChatExample | ||
| // | ||
| // Created by Kino Roy on 2020-07-18. | ||
| // Copyright © 2020 MessageKit. All rights reserved. | ||
| // | ||
|
|
||
| import SwiftUI | ||
| import MessageKit | ||
| import InputBarAccessoryView | ||
|
|
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| final class MessageSwiftUIVC: MessagesViewController { | ||
| override func viewDidAppear(_ animated: Bool) { | ||
| super.viewDidAppear(animated) | ||
| // Because SwiftUI wont automatically make our controller the first responder, we need to do it on viewDidAppear | ||
| becomeFirstResponder() | ||
| messagesCollectionView.scrollToBottom(animated: true) | ||
| } | ||
| } | ||
|
|
||
| @available(iOS 13.0, *) | ||
| struct MessagesView: UIViewControllerRepresentable { | ||
|
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| @State var initialized = false | ||
| @Binding var messages: [MessageType] | ||
|
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| func makeUIViewController(context: Context) -> MessagesViewController { | ||
| let messagesVC = MessageSwiftUIVC() | ||
|
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| messagesVC.messagesCollectionView.messagesDisplayDelegate = context.coordinator | ||
| messagesVC.messagesCollectionView.messagesLayoutDelegate = context.coordinator | ||
| messagesVC.messagesCollectionView.messagesDataSource = context.coordinator | ||
| messagesVC.messageInputBar.delegate = context.coordinator | ||
| messagesVC.scrollsToBottomOnKeyboardBeginsEditing = true // default false | ||
| messagesVC.maintainPositionOnKeyboardFrameChanged = true // default false | ||
|
|
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| return messagesVC | ||
| } | ||
|
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| func updateUIViewController(_ uiViewController: MessagesViewController, context: Context) { | ||
| uiViewController.messagesCollectionView.reloadData() | ||
| scrollToBottom(uiViewController) | ||
| } | ||
|
|
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| private func scrollToBottom(_ uiViewController: MessagesViewController) { | ||
| DispatchQueue.main.async { | ||
| // The initialized state variable allows us to start at the bottom with the initial messages without seeing the inital scroll flash by | ||
| uiViewController.messagesCollectionView.scrollToBottom(animated: self.initialized) | ||
| self.initialized = true | ||
| } | ||
| } | ||
|
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| func makeCoordinator() -> Coordinator { | ||
| return Coordinator(messages: $messages) | ||
| } | ||
|
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| final class Coordinator { | ||
|
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| let formatter: DateFormatter = { | ||
| let formatter = DateFormatter() | ||
| formatter.dateStyle = .medium | ||
| return formatter | ||
| }() | ||
|
|
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| var messages: Binding<[MessageType]> | ||
| init(messages: Binding<[MessageType]>) { | ||
| self.messages = messages | ||
| } | ||
|
|
||
| } | ||
|
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| } | ||
|
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| @available(iOS 13.0, *) | ||
| extension MessagesView.Coordinator: MessagesDataSource { | ||
| func currentSender() -> SenderType { | ||
| return SampleData.shared.currentSender | ||
| } | ||
|
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| func messageForItem(at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> MessageType { | ||
| return messages.wrappedValue[indexPath.section] | ||
| } | ||
|
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| func numberOfSections(in messagesCollectionView: MessagesCollectionView) -> Int { | ||
| return messages.wrappedValue.count | ||
| } | ||
|
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| func messageTopLabelAttributedText(for message: MessageType, at indexPath: IndexPath) -> NSAttributedString? { | ||
| let name = message.sender.displayName | ||
| return NSAttributedString(string: name, attributes: [NSAttributedString.Key.font: UIFont.preferredFont(forTextStyle: .caption1)]) | ||
| } | ||
|
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| func messageBottomLabelAttributedText(for message: MessageType, at indexPath: IndexPath) -> NSAttributedString? { | ||
| let dateString = formatter.string(from: message.sentDate) | ||
| return NSAttributedString(string: dateString, attributes: [NSAttributedString.Key.font: UIFont.preferredFont(forTextStyle: .caption2)]) | ||
| } | ||
| } | ||
|
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| @available(iOS 13.0, *) | ||
| extension MessagesView.Coordinator: InputBarAccessoryViewDelegate { | ||
| func inputBar(_ inputBar: InputBarAccessoryView, didPressSendButtonWith text: String) { | ||
| let message = MockMessage(text: text, user: SampleData.shared.currentSender, messageId: UUID().uuidString, date: Date()) | ||
| messages.wrappedValue.append(message) | ||
| inputBar.inputTextView.text = "" | ||
| } | ||
| } | ||
|
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| @available(iOS 13.0, *) | ||
| extension MessagesView.Coordinator: MessagesLayoutDelegate, MessagesDisplayDelegate { | ||
| func configureAvatarView(_ avatarView: AvatarView, for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) { | ||
| let avatar = SampleData.shared.getAvatarFor(sender: message.sender) | ||
| avatarView.set(avatar: avatar) | ||
| } | ||
| func messageTopLabelHeight(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> CGFloat { | ||
| return 20 | ||
| } | ||
|
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| func messageBottomLabelHeight(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> CGFloat { | ||
| return 16 | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| // | ||
| // ChatView.swift | ||
| // ChatExample | ||
| // | ||
| // Created by Kino Roy on 2020-07-18. | ||
| // Copyright © 2020 MessageKit. All rights reserved. | ||
| // | ||
|
|
||
| import SwiftUI | ||
| import MessageKit | ||
|
|
||
| @available(iOS 13.0, *) | ||
| struct SwiftUIExampleView: View { | ||
|
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| @State var messages: [MessageType] = SampleData.shared.getMessages(count: 20) | ||
|
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| var body: some View { | ||
| MessagesView(messages: $messages).onAppear { | ||
| self.connectToMessageSocket() | ||
| }.onDisappear { | ||
| self.cleanupSocket() | ||
| } | ||
| .navigationBarTitle("SwiftUI Example", displayMode: .inline) | ||
| } | ||
|
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| private func connectToMessageSocket() { | ||
| MockSocket.shared.connect(with: [SampleData.shared.nathan, SampleData.shared.wu]).onNewMessage { message in | ||
| self.messages.append(message) | ||
| } | ||
| } | ||
|
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| private func cleanupSocket() { | ||
| MockSocket.shared.disconnect() | ||
| } | ||
|
|
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| } | ||
|
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| @available(iOS 13.0, *) | ||
| struct SwiftUIExampleView_Previews: PreviewProvider { | ||
| static var previews: some View { | ||
| SwiftUIExampleView() | ||
| } | ||
| } |
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