Bloc<Event, State> class Null safety

Takes a Stream of Events as input and transforms them into a Stream of States as output.

Inheritance

Constructors

Bloc(State initialState)
Takes a Stream of Events as input and transforms them into a Stream of States as output.

Properties

hashCode int
The hash code for this object. [...]
read-only, inherited
isClosed bool
Whether the bloc is closed. [...]
read-only, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
state → State
The current state.
read-only, inherited
stream Stream<State>
The current state stream.
read-only, inherited

Methods

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.
@mustCallSuper, inherited
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.
@mustCallSuper, override
emit(State 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. [...]
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
on<E extends Event>(EventHandler<E, State> 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<State> 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. [...]
@mustCallSuper, inherited
onError(Object error, StackTrace stackTrace) → void
Called whenever an error occurs and notifies BlocObserver.onError. [...]
@mustCallSuper, @protected, inherited
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, State> 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. executed. onTransition is called before a Bloc's state has been updated. A great spot to add logging/analytics at the individual Bloc level. [...]
toString() String
A string representation of this object. [...]
inherited

Operators

operator ==(Object other) bool
The equality operator. [...]
inherited