36  * For an in-depth explanation of invalidation events and how they differ from
  37  * change events, see the documentation of {@code ObservableValue}.
  38  * <p>
  39  * The same instance of {@code InvalidationListener} can be registered to listen
  40  * to multiple {@code Observables}.
  41  *
  42  * @see Observable
  43  * @see ObservableValue
  44  *
  45  *
  46  * @since JavaFX 2.0
  47  */
  48 @FunctionalInterface
  49 public interface InvalidationListener {
  50 
  51     /**
  52      * This method needs to be provided by an implementation of
  53      * {@code InvalidationListener}. It is called if an {@link Observable}
  54      * becomes invalid.
  55      * <p>
  56      * In general is is considered bad practice to modify the observed value in
  57      * this method.
  58      *
  59      * @param observable
  60      *            The {@code Observable} that became invalid
  61      */
  62     public void invalidated(Observable observable);
  63 }

  36  * For an in-depth explanation of invalidation events and how they differ from
  37  * change events, see the documentation of {@code ObservableValue}.
  38  * <p>
  39  * The same instance of {@code InvalidationListener} can be registered to listen
  40  * to multiple {@code Observables}.
  41  *
  42  * @see Observable
  43  * @see ObservableValue
  44  *
  45  *
  46  * @since JavaFX 2.0
  47  */
  48 @FunctionalInterface
  49 public interface InvalidationListener {
  50 
  51     /**
  52      * This method needs to be provided by an implementation of
  53      * {@code InvalidationListener}. It is called if an {@link Observable}
  54      * becomes invalid.
  55      * <p>
  56      * In general, it is considered bad practice to modify the observed value in
  57      * this method.
  58      *
  59      * @param observable
  60      *            The {@code Observable} that became invalid
  61      */
  62     public void invalidated(Observable observable);
  63 }