ComponentController<T> mixin
A mixin that defines the interface for controlling component values.
This mixin combines the capabilities of ValueNotifier to provide a standardized way for widgets to expose their current value and notify listeners of changes. Components that implement this interface can be controlled programmatically and integrated with form validation systems.
The generic type T
represents the type of value this controller manages.
- Implemented types
- Mixin applications
-
- CheckboxController
- ChipInputController
- ColorInputController
- ComponentValueController
- ConvertedController
- DatePickerController
- DurationPickerController
- FormattedInputController
- MultipleAnswerController
- MultipleChoiceController
- RadioGroupController
- SelectController
- SliderController
- StarRatingController
- SwitchController
- TimePickerController
- ToggleController
- Available extensions
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