RestorableString class Null safety
A RestorableProperty that knows how to store and restore a String.
The current value of this property is stored in the restoration data. During state restoration the property is restored to the value it had when the restoration data it is getting restored from was collected.
If no restoration data is available, value is initialized to the
defaultValue
given in the constructor.
See also:
- RestorableStringN for the nullable version of this class.
- Inheritance
-
- Object
- ChangeNotifier
- RestorableProperty<
String> - RestorableValue<
String> - RestorableString
Constructors
- RestorableString(String defaultValue)
- Creates a RestorableString.
Properties
- enabled → bool
-
Whether the object currently returned by toPrimitives should be included
in the restoration state.
read-onlyinherited
- hashCode → int
-
The hash code for this object.
read-onlyinherited
- hasListeners → bool
- Whether any listeners are currently registered.
- isRegistered → bool
- Whether this property is currently registered with a RestorationMixin.
- runtimeType → Type
-
A representation of the runtime type of the object.
read-onlyinherited
-
state
→ State<
StatefulWidget> - The State object that this property is registered with.
- value ↔ String
-
The current value stored in this property.
read / writeinherited
Methods
-
addListener(
VoidCallback listener) → void -
Register a closure to be called when the object changes.
inherited
-
createDefaultValue(
) → String -
Called by the RestorationMixin if no restoration data is available to
restore the value of the property from to obtain the default value for the
property.
inherited
-
didUpdateValue(
String? oldValue) → void -
Called whenever a new value is assigned to value.
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
-
fromPrimitives(
Object? serialized) → String -
Called by the RestorationMixin to convert the
data
previously retrieved from toPrimitives back into an object of typeT
that this property should wrap.inherited -
initWithValue(
String value) → void -
Called by the RestorationMixin with the
value
returned by either createDefaultValue or fromPrimitives to set the value that this property currently wraps.mustCallSuper">@mustCallSuperinherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited
-
notifyListeners(
) → void - Call all the registered listeners.
-
removeListener(
VoidCallback listener) → void -
Remove a previously registered closure from the list of closures that are
notified when the object changes.
inherited
-
toPrimitives(
) → Object -
Called by the RestorationMixin to retrieve the information that this
property wants to store in the restoration data.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited