Interface InvalidationListener
- All Known Implementing Classes:
WeakInvalidationListener
- Functional Interface:
- This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface
public interface InvalidationListener An
InvalidationListener is notified whenever an Observable becomes invalid. It can be registered and unregistered with Observable.addListener(InvalidationListener) respectively Observable.removeListener(InvalidationListener). For an in-depth explanation of invalidation events and how they differ from change events, see the documentation of ObservableValue.
The same instance of InvalidationListener can be registered to listen to multiple Observables.
- Since:
- JavaFX 2.0
- See Also:
-
Observable,ObservableValue
Method Summary
| Modifier and Type | Method | Description |
|---|---|---|
void | invalidated(Observable observable) | This method needs to be provided by an implementation of InvalidationListener. |
Method Details
invalidated
void invalidated(Observable observable)
This method needs to be provided by an implementation of
InvalidationListener. It is called if an Observable becomes invalid. In general, it is considered bad practice to modify the observed value in this method.
- Parameters:
-
observable- TheObservablethat became invalid
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Documentation extracted from JavaFX API Documentation.
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