InvalidationListener
which will be notified whenever the
Observable
becomes invalid.InvalidationListener
.InvalidationListener
.InvalidationListener
is notified whenever an
Observable
becomes invalid.Observable
is an entity that wraps content and allows to
observe the content for invalidations.Observable
becomes invalid.true
if the linked listener was garbage-collected.true
if the linked listener was garbage-collected.WeakInvalidationListener
can be used if an Observable
should only maintain a weak reference to the listener.WeakInvalidationListener
.WeakListener
is the super interface of all weak listener implementations
in the JavaFX API.