ChangeEmitter<C extends Change> class abstract

An alternative to ChangeNotifier from the Flutter framework that exposes a stream of Changes to notify widgets and other components of your state that they should update instead of a list of callbacks. This allows ChangeEmitters to provide extra information about individual changes and makes them more easily composable.

For more information on how to compose ChangeEmitters, see EmitterContainer.

This library also comes with wigdets to use with the Provider package to provide and consume state for your app. See ChangeEmitterProvider and ChangeEmitterSelector.

Implementers

• ListEmitter
• MapEmitter
• ParentEmitter
• ValueEmitter

Constructors

ChangeEmitter({bool useSyncronousStream = false})

Properties

changes → Stream<C>

The stream of Changes to notify your UI or other state elements that they should update.

no setter

hashCode → int

The hash code for this object.

no setter, inherited

isDisposed → bool

Whether this has been disposed.

no setter

parent → ChangeEmitter<Change>?

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

addChangeToStream(C change) → void

Used by subclasses to broadcast Changes.

didRegisterParent() → void

Will be called after parent is set and the ancestor tree is available.

dispose() → void

Disposes resources and closes the stream controller.

findAncestorOfExactType<T extends ChangeEmitter<Change>>() → T?

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited