ValueCubit<Value, ExtraData> class
Allows you to wait for the loading of a value, if it is not successful it notifies the failure otherwise it notifies the new value
- Inheritance
-
- Object
- BlocBase<
ObjectCubitState< Value, ExtraData> > - Cubit<
ObjectCubitState< Value, ExtraData> > - ObjectCubit<
Value, ExtraData> - ValueCubit
- Available Extensions
Constructors
- ValueCubit({ExtraData? initialExtraData})
- Create the cubit that is waiting to receive a value, the initial state is ObjectCubitUpdating
- ValueCubit.empty({ExtraData? initialExtraData})
- Create the cubit without a value, the initial state is ObjectCubitUpdated
- ValueCubit.seed({required Value value, ExtraData? initialExtraData})
- Create the cubit with an initial value, the initial state is ObjectCubitUpdated
Properties
- 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
→ ObjectCubitState<
Value, ExtraData> -
The current state.
no setterinherited
-
stream
→ Stream<
ObjectCubitState< Value, ExtraData> > -
The current state stream.
no setterinherited
Methods
-
addError(
Object error, [StackTrace? stackTrace]) → void -
Reports an
error
which triggers onError with an optional StackTrace.inherited -
clear(
) → void -
close(
) → Future< void> -
Closes the instance.
This method should be called when the instance is no longer needed.
Once close is called, the instance can no longer be used.
inherited
-
emit(
ObjectCubitState< Value, ExtraData> state) → void -
Updates the
state
to the providedstate
. emit does nothing if the instance has been closed or if thestate
being emitted is equal to the currentstate
.inherited -
listen(
void onData(ObjectCubitState< Value, ExtraData> )?, {Function? onError, void onDone()?, bool? cancelOnError}) → StreamSubscription<ObjectCubitState< Value, ExtraData> > -
Adds a subscription to the
Stream<State>
. Returns a StreamSubscription which handles events from theStream<State>
using the providedonData
,onError
andonDone
handlers.inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
onChange(
Change< ObjectCubitState< change) → voidValue, ExtraData> > -
Called whenever a
change
occurs with the givenchange
. Achange
occurs when a newstate
is emitted. onChange is called before thestate
of thecubit
is updated. onChange is a great spot to add logging/analytics for a specificcubit
.inherited -
onError(
Object error, StackTrace stackTrace) → void -
Called whenever an
error
occurs and notifies BlocObserver.onError.inherited -
reset(
) → void -
override
-
toString(
) → String -
A string representation of this object.
inherited
-
update(
{required Value value}) → void - Update the current value
-
updateExtraData(
ExtraData extraData) → void -
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited