SelectController<T> class
Controller for managing ControlledSelect state programmatically.
Extends ValueNotifier to provide reactive state management for select components. Can be used to programmatically change selection, listen to state changes, and integrate with forms and other reactive systems.
Example:
final controller = SelectController<String>('initial');
// Listen to changes
controller.addListener(() {
print('Selection changed to: ${controller.value}');
});
// Update selection
controller.value = 'new_value';
- Inheritance
-
- Object
- ChangeNotifier
- ValueNotifier<
T?> - SelectController
- Mixed-in types
- Implementers
- Available extensions
Constructors
- SelectController.new([T? value])
- Creates a SelectController with an optional initial value.
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasListeners → bool
-
Whether any listeners are currently registered.
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(
VoidCallback listener) → void -
Register a closure to be called when the object changes.
inherited
-
dispose(
) → void -
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
-
map<
R> (R mapper(T value)) → ValueListenable< R> -
Available on ValueListenable<
Returns a read-only view of the ValueListenable.T> , provided by the ValueListenableExtension extension -
map<
R> (R mapper(T value)) → ValueListenable< R> -
Available on ValueNotifier<
Maps the value of the ValueNotifier to a new value.T> , provided by the ValueNotifierExtension extension -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
notifyListeners(
) → void -
Call all the registered listeners.
inherited
-
readOnly(
) → ValueListenable< T> -
Available on ValueNotifier<
Returns a read-only view of the ValueNotifier.T> , provided by the ValueNotifierExtension extension -
removeListener(
VoidCallback listener) → void -
Remove a previously registered closure from the list of closures that are
notified when the object changes.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited