ChatMessagesController class

Controller for managing chat messages and their states.

This controller handles message operations such as adding, updating, and loading more messages. It also manages the welcome message state and loading states for pagination.

Inheritance

Constructors

ChatMessagesController.new({List<ChatMessage>? initialMessages, Future<List<ChatMessage>> onLoadMoreMessages(ChatMessage? lastMessage)?})
Creates a new chat messages controller.

Properties

hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether any listeners are currently registered.
no setterinherited
isLoadingMore → bool
Whether more messages are currently being loaded.
no setter
messages → List<ChatMessage>
List of all chat messages, ordered from newest to oldest.
no setter
onLoadMoreMessages → Future<List<ChatMessage>> Function(ChatMessage? lastMessage)?
Callback function to load more messages when scrolling up.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
showWelcomeMessage → bool
Whether to show the welcome message.
no setter

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
addMessage(ChatMessage message) → void
Adds a new message to the chat.
clearMessages() → void
Clears all messages and shows the welcome message.
dispose() → void
Discards any resources used by the object. After this is called, the object is not in a usable state and should be discarded (calls to addListener will throw after the object is disposed).
inherited
handleExampleQuestion(String question, ChatUser currentUser, ChatUser aiUser) → void
Handles an example question by creating and adding appropriate messages.
loadMore() → Future<void>
Loads more messages using the onLoadMoreMessages callback.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void
Call all the registered listeners.
inherited
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
setMessages(List<ChatMessage> messages) → void
Replaces all existing messages with a new list.
toString() → String
A string representation of this object.
inherited
updateMessage(ChatMessage message) → void
Updates an existing message or adds it if not found.

Operators

operator ==(Object other) → bool
The equality operator.
inherited