MessageKind class sealed

Represents different types of chat messages using sealed class pattern. This enables exhaustive pattern matching with switch expressions.

Example usage:

final widget = switch (messageKind) {
  TextMessageKind(:final text) => Text(text),
  ImageMessageKind(:final imageProvider) => Image(image: imageProvider),
  HtmlMessageKind(:final htmlData) => HtmlWidget(htmlData),
  QuickReplyMessageKind(:final quickReplies) => QuickReplyWidget(quickReplies),
  CarouselMessageKind(:final carouselItems) => CarouselWidget(carouselItems),
  CustomMessageKind(:final custom) => CustomWidget(custom),
};

Implementers

• CarouselMessageKind
• CustomMessageKind
• HtmlMessageKind
• ImageMessageKind
• QuickReplyMessageKind
• TextMessageKind

Constructors

MessageKind.carousel(List<CarouselItem> carouselItems)

Creates a carousel message with items

factory

MessageKind.custom(dynamic custom)

Creates a custom message with user-defined content

factory

MessageKind.html(String htmlData)

Creates an HTML message

factory

MessageKind.imageProvider(ImageProvider<Object> imageProvider)

Creates an image message with an ImageProvider

factory

MessageKind.quickReply(List<QuickReplyItem> quickReplies)

Creates a quick reply message with options

factory

MessageKind.text(String text)

Creates a text message

factory

Properties

carouselItems → List<CarouselItem>

Carousel items (empty list if not CarouselMessageKind)

no setter

custom → dynamic

Custom data (only available for CustomMessageKind)

no setter

hashCode → int

The hash code for this object.

no setter, inherited

htmlData → String?

HTML data (only available for HtmlMessageKind)

no setter

imageProvider → ImageProvider<Object>?

Image provider (only available for ImageMessageKind)

no setter

quickReplies → List<QuickReplyItem>

Quick replies (empty list if not QuickReplyMessageKind)

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

text → String?

Text content (only available for TextMessageKind)

no setter

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited