EnhancedLatchNotifier<T> class

A specialized EnhancedValueNotifier that acts like a latch.

This notifier holds back value updates until it is explicitly "unlatched". When fire is called, the value is cached. Once unlatch is called, the cached value is released and all listeners are notified. This is useful for coordinating asynchronous operations where you want to signal completion with a final result.

Inheritance

Constructors

EnhancedLatchNotifier()
Creates an instance of EnhancedLatchNotifier with an initial value of null.

Properties

hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Override hasListeners to check if there are any listeners.
no setterinherited
properties → Map<String, dynamic>
Implement getProperty to return the value of a property by its name.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
value ↔ T?
The current value stored in this notifier.
getter/setter pairinherited

Methods

addListener(Function listener, {Object? target = "latch", bool once = false, bool immediate = false}) → void
Adds a listener that will be notified when the latch is unlatched.
override
clear(String target, {dynamic fallback, bool silent = true}) → void
inherited
dispose() → void
Override dispose to discards any resources used by the object. After this is called, the object is not in a usable state and should be discarded (calls to addListener will throw after the object is disposed).
inherited
fire(T value) → void
Caches a new value. If the latch is already open, it immediately notifies listeners.
fromMap(Map<String, dynamic> props) → void
Initialize properties with map
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners([String? target]) → void
Notify listeners for a specific element
inherited
removeListener(Function listener) → void
Remove a listener
inherited
reset() → void
Resets the latch to its initial closed state, allowing it to be reused.
toString() → String
A string representation of this object.
inherited
unlatch([T? partialResult]) → void
Opens the latch, notifying all listeners with the last cached value.

Operators

operator ==(Object other) → bool
The equality operator.
inherited
operator [](String target) → dynamic
inherited
operator []=(String target, dynamic value) → void
inherited