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Link Preview

Overview​

The LMChatMessageLinkPreview is used to display link previews within chat message. It shows a thumbnail image, title, and description of the linked content.

File Location:
LMChatMessageLinkPreview.swift

UI Components​

  • containerView: An LMView that serves as the main container for the preview.
  • containerStackView: An LMStackView that organizes the image and metadata vertically.
  • imageView: An LMImageView that displays the link's thumbnail.
  • metaDataContainerView: An LMView that holds the metadata stack view.
  • metaDataStackView: An LMStackView that organizes the title and description labels.
  • titleLabel: An LMLabel that displays the link's title.
  • descriptionLabel: An LMLabel that shows the link's description.

Methods​

  • setData(_ data: ContentModel): Updates the preview's appearance based on the provided data.
  • onLinkClicked(_ gesture: UITapGestureRecognizer): Handles tap events on the preview.

Customization​

CustomChatMessageLinkPreview.swift
class CustomChatMessageLinkPreview: LMChatMessageLinkPreview {
    override func setupViews() {
        super.setupViews()
        // Add custom view setup here
    }

    override func setData(_ data: ContentModel) {
        super.setData(data)
        // Add custom data handling here
    }
}
AppDelegate.swift
func application(_ application: UIApplication, willFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil) -> Bool {
    // Register custom link preview class if needed
    LMUIComponents.shared.messageLinkPreview = CustomChatMessageLinkPreview.self
    // ...
    return true
}