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Chat Message Reply Preview

Overview​

The LMChatMessageReplyPreview is a custom view component designed to display a preview of a message being replied to.

File Location:
LMChatMessageReplyPreview.swift

Functionality​

Protocols​

LMBottomMessageReplyPreviewDelegate​

  • func clearReplyPreview(): method for clearing the reply preview.

UI Components​

  • containerView: A LMView the main container for the reply preview.
  • sidePannelColorView: A LMView colored view indicating the reply status.
  • userNameLabel: A LMLabel displays the name of the original message sender.
  • messageLabel: A LMLabel to hows the content of the original message.
  • messageAttachmentImageView:A LMImageView to displays a thumbnail of any attached media.
  • closeReplyButton: A LMButton to allows users to dismiss the reply preview.
  • horizontalReplyStackView: A LMStackView to organizes the reply content horizontally.
  • verticleUsernameAndMessageContainerStackView: A LMStackView torranges the username and message vertically.

Properties​

  • delegate: A weak reference to an object conforming to LMBottomMessageReplyPreviewDelegate.
  • viewData: Stores the ContentModel for the current reply preview.
  • onClickReplyPreview: A closure that can be set to handle taps on the reply preview.
  • onClickCancelReplyPreview: A closure that can be set to handle cancellation of the reply.

Methods​

  • setData(_:): Populates the view with data from a ContentModel.
  • setDataForEdit(_:): Configures the view for editing an existing message.
  • createAttributedString(_:): Creates an attributed string for the message content, including icons for different attachment types.
  • cancelReply(_:): Handles the cancellation of the reply preview.
  • onReplyPreviewClicked(_:): Handles taps on the reply preview.

Customization​

CustomChatMessageReplyPreview.swift
class CustomChatMessageReplyPreview: LMChatMessageReplyPreview {
    override func setupAppearance() {
        super.setupAppearance()
        containerView.backgroundColor = .lightGray
    }

    override func createAttributedString(_ data: ContentModel) -> NSAttributedString {
        // Custom implementation for creating attributed string
    }
}
AppDelegate.swift
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    LMUIComponents.shared.messageReplyView = CustomChatMessageReplyPreview.self
    // ...
    return true
}