AbstractControl<T> class
abstract
Base class for form controls and groups.
- Inheritance
-
- Object
- ChangeNotifier
- AbstractControl
- Implementers
Constructors
Properties
- error → String?
-
The error message if validation failed, or
nullif valid.no setter - 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
- valid → bool
-
Whether the control's current value is valid.
no setter
- value → T
-
The current value of the control.
no setter
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.
inherited
-
getRawValue(
) → Object? -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
notifyListeners(
) → void -
Call all the registered listeners.
inherited
-
removeListener(
VoidCallback listener) → void -
Remove a previously registered closure from the list of closures that are
notified when the object changes.
inherited
-
setRawValue(
Object? value, {bool notify = true}) → void -
setValue(
T val, {bool notify = true}) → void - Sets the value of the control.
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited