KeyValueNotifer<K, V> class

A ChangeNotifier that keeps track of it's listeners by assigning each listener a key of type K.

This is not a subtype of ChangeNotifier, because the ChangeNotifier.addListener and ChangeNotifier.removeListener methods require a different signature in a KeyValueNotifer.

Implemented types

Mixed in types

Constructors

KeyValueNotifer(V value): Initialize this KeyValueNotifer with an AdvancedValueNotifier that is initialized with value.
factory
KeyValueNotifer.empty(): Initialize this KeyValueNotifer with an EmptyValueNotifier.empty().
factory
KeyValueNotifer.withNotifier(ValueNotifierBase<V> notifier): Initialize this KeyValueNotifer with notifier as it's internal ValueNotifierBase.

hashCode → int: The hash code for this object.
no setterinherited
hasListeners → bool: no setteroverride
isEmpty → bool?: If the internal NotifierBase is an EmptyValueNotifier, you can check if it is empty.
no setteroverride
isNotEmpty → bool?: If the internal NotifierBase is an EmptyValueNotifier, you can check if it is not empty.
no setteroverride
keys → Iterable<K>: no setteroverride
notifierType → Type: Get the Type of the underlying NotifierBase.
no setteroverride
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
value ↔ V: The current value stored in this notifier.
getter/setter pairoverride-getter

addListener(K key, VoidCallback listener) → bool: Returns true if key was not already used for another listener.
override
addValueListener(K key, ValueCallback<V> listener) → bool: Returns true if key was not already used for another listener.
override
dispose() → void: This method calls dispose() on the notifier this KeyValueNotifer was instantiated with.
override
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
removeListener(K key) → bool: Returns true if key was used for a listener and therefore successfully removed.
override
removeValueListener(K key) → bool: Returns true if key was used for a listener and therefore successfully removed.
override
toString() → String: A string representation of this object.
override