ProxyFeature<State, Msg, Effect> class abstract base

A base class for creating proxy implementations of Feature.

ProxyFeature acts as a wrapper around an existing Feature instance, delegating all functionality to the wrapped feature. This is useful for extending or modifying the behavior of a feature without changing its core implementation.

Example Use Case:

• Logging: You could wrap a feature to log all messages and effects.
• Transformation: Apply additional processing to state or effects.

Key Points:

• Delegates all operations, such as state updates, message acceptance, and effect handling, to the wrapped feature.
• Can be extended to override specific behavior if needed.

Implemented types

• Feature<State, Msg, Effect>

Implementers

• FeatureEffectWrapper
• FeatureObserverWrapper

Available extensions

• EffectHandlerWrapperUtils
• FeatureObserverWrapperHelper

Annotations

• @experimental

Constructors

ProxyFeature({required Feature<State, Msg, Effect> feature})

Creates a ProxyFeature with the specified feature.

const

Properties

disposableEffects → List<Effect>

Delegates to the disposableEffects of the wrapped feature.

no setter, override

effects → Stream<Effect>

Delegates effect stream access to the wrapped feature.

no setter, override

feature → Feature<State, Msg, Effect>

The wrapped Feature instance.

final

hashCode → int

The hash code for this object.

no setter, inherited

initialEffects → List<Effect>

Delegates to the initialEffects of the wrapped feature.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

state → State

Retrieves the current state from the wrapped feature.

no setter, override

stateStream → Stream<State>

Delegates state stream access to the wrapped feature.

no setter, override

Methods

accept(Msg message) → void

Delegates message handling to the wrapped feature.

override

dispose() → Future<void>

Disposes the wrapped feature.

override

init() → FutureOr<void>

Initializes the wrapped feature.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

observe(FeatureObserver<S, M, E> observer) → Feature<S, M, E>

Available on Feature<S, M, E>, provided by the FeatureObserverWrapperHelper extension

Wraps the feature with the specified observer.

toString() → String

A string representation of this object.

inherited

wrapEffects<E extends Effect>(EffectHandler<E, Msg> handler) → Feature<State, Msg, Effect>

Available on Feature<State, Msg, Effect>, provided by the EffectHandlerWrapperUtils extension

Wraps the feature with an EffectHandler for effects of type E.

Operators

operator ==(Object other) → bool

The equality operator.

inherited