MultiStateBloc<Event, BaseState> class abstract

MultiStateBloc allows you to easily use different states in one bloc. All registered states are automatically updated using the Bloc's onChange method override.


MultiStateBloc(BaseState initialState)


hashCode int
The hash code for this object.
no setterinherited
isClosed bool
Whether the bloc is closed.
no setterinherited
runtimeType Type
A representation of the runtime type of the object.
no setterinherited
state → BaseState
The current state.
no setterinherited
stream Stream<BaseState>
The current stream of states.
no setterinherited


add(Event event) → void
Notifies the Bloc of a new event which triggers all corresponding EventHandler instances.
addError(Object error, [StackTrace? stackTrace]) → void
Reports an error which triggers onError with an optional StackTrace.
close() Future<void>
Closes the event and state Streams. This method should be called when a Bloc is no longer needed. Once close is called, events that are added will not be processed. In addition, if close is called while events are still being processed, the Bloc will finish processing the pending events.
emit(BaseState state) → void
emit is only for internal use and should never be called directly outside of tests. The Emitter instance provided to each EventHandler should be used instead.
holdState(BaseState instantiate()) → void
Put the state in memory. instantiate should return a new state or an already existing one.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
on<E extends Event>(EventHandler<E, BaseState> handler, {EventTransformer<E>? transformer}) → void
Register event handler for an event of type E. There should only ever be one event handler per event type E.
onChange(Change<BaseState> change) → void
Called whenever a change occurs with the given change. A change occurs when a new state is emitted. onChange is called before the state of the cubit is updated. onChange is a great spot to add logging/analytics for a specific cubit.
onError(Object error, StackTrace stackTrace) → void
Called whenever an error occurs and notifies BlocObserver.onError.
onEvent(Event event) → void
Called whenever an event is added to the Bloc. A great spot to add logging/analytics at the individual Bloc level.
onTransition(Transition<Event, BaseState> transition) → void
Called whenever a transition occurs with the given transition. A transition occurs when a new event is added and a new state is emitted from a corresponding EventHandler.
states<state extends BaseState>() → state?
Retrieve the state you want.
toString() String
A string representation of this object.


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