MappedValueNotifier<T, R> class

A ValueListenable that maps the value of another ValueListenable.

Inheritance

• Object
• Listenable
• ValueListenable<R>
• MappedValueNotifier

Available extensions

• ValueListenableExtension

Constructors

MappedValueNotifier(ValueListenable<T> _notifier, R _mapper(T value))

Constructs a MappedValueNotifier with the given ValueListenable and mapper function.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

value → R

The current value of the object.

no setter, override

Methods

addListener(VoidCallback listener) → void

Register a closure to be called when the object notifies its listeners.

override

map<R>(R mapper(T value)) → ValueListenable<R>

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

Returns a read-only view of the ValueListenable.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

removeListener(VoidCallback listener) → void

Remove a previously registered closure from the list of closures that the object notifies.

override

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited