ValueNotifierSignalMixin<T> mixin

ValueNotifier implementation for Signal

Superclass constraints
Implemented types
Available extensions

Properties

autoDispose ↔ bool
Throws and error if read after dispose and can be disposed on last unsubscribe.
getter/setter pairinherited
brand → Symbol
finalinherited
debugLabel → String?
Debug label for Debug Mode
finalinherited
disposed ↔ bool
Check if the effect is disposed
getter/setter pairinherited
equalityCheck ↔ bool Function(T a, T b)
Optional method to check if to values are the same
getter/setter pairinherited
globalId → int
Global ID of the signal
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether any listeners are currently registered.
no setteroverride
internalValue ↔ T
getter/setter pairinherited
isInitialized ↔ bool
Check if a signal value is set (does not subscribe)
getter/setter pairinherited
node ↔ Node?
getter/setter pairinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
targets ↔ Node?
getter/setter pairinherited
untrackedValue → T

Available on ReadonlySignal<T>, provided by the ReadonlySignalUntrackedValueUtils extension

Runs a callback function that returns the signal value without subscribing to the signal updates.
no setter
value ↔ T
Compute the current value
getter/setter pairinherited
version ↔ int
Version numbers should always be >= 0, because the special value -1 is used by Nodes to signify potentially unused but recyclable nodes.
getter/setter pairinherited

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
override
afterCreate(T val) → void
Internal hook for after a signal is created
inherited
beforeUpdate(T val) → void
Internal hook for after a signal is updated
inherited
call() → T
Return the value when invoked
inherited
dispose() → void
Dispose the signal
override
get() → T
Helper method to get the current value
inherited
internalRefresh() → bool
inherited
internalSetValue(T val) → void
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void
Call all the registered listeners.
override
onDispose(void cleanup()) → EffectCleanup
Add a cleanup function to be called when the signal is disposed
inherited
overrideWith(T val) → Signal<T>
Override the current signal with a new value as if it was created with it
inherited
peek() → T
In the rare instance that you have an effect that should write to another signal based on the previous value, but you don't want the effect to be subscribed to that signal, you can read a signals's previous value via signal.peek().
inherited
readonly() → ReadonlySignal<T>
Returns a readonly signal
inherited
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
override
select<R>(R selector(ReadonlySignal<T>), {bool autoDispose = false, String? debugLabel}) → Computed<R>

Available on ReadonlySignal<T>, provided by the ReadonlySignalUtils extension

Select a value and return a computed signal to listen for changes
set(T val, {bool force = false}) → bool
Set the current value by a method
inherited
subscribe(void fn(T value)) → void Function()
Subscribe to value changes with a dispose function
inherited
subscribeToNode(Node node) → void
inherited
toJson() → dynamic
Convert value to JSON
inherited
toSignal({String? debugLabel, bool autoDispose = false}) → ReadonlySignal<T>

Available on ValueListenable<T>, provided by the SignalValueListenableUtils extension

SignalValueNotifier
toSignal({String? debugLabel, bool autoDispose = false}) → Signal<T>

Available on ValueNotifier<T>, provided by the SignalValueNotifierUtils extension

SignalValueNotifier
toStream() → Stream<T>

Available on ReadonlySignal<T>, provided by the ReadonlySignalUtils extension

Convert a signal to a Stream to be consumed as a read only stream.
toString() → String
A string representation of this object.
inherited
unsubscribeFromNode(Node node) → void
inherited
unwatch(BuildContext context) → void

Available on ReadonlySignal<T>, provided by the FlutterReadonlySignalUtils extension

Stop subscriptions to updates on a signal for watchers
watch(BuildContext context, {String? debugLabel}) → T

Available on ReadonlySignal<T>, provided by the FlutterReadonlySignalUtils extension

Rebuild the Element that the current signal is inside of

Operators

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