ValueBuilder<T> class
abstract
A view model to modify a value.
The value being modified is saved in value, which must be a valid T. The UI, however, may
contain invalid data inputted by the user. Use isValid to see if value matches the UI.
- Mixed-in types
- Implementers
Constructors
- ValueBuilder()
- Listens to all otherBuilders as part of this builder.
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasListeners → bool
-
Whether any listeners are currently registered.
no setterinherited
- isValid → bool
-
Whether the value in the UI is valid.
no setter
-
otherBuilders
→ List<
ChangeNotifier> -
Other builders to listen to.
no setter
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- value → T
-
The value being updated in the UI.
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. 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).
override
-
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
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited