Class StaleEvent

  • All Implemented Interfaces:
    Serializable

    public class StaleEvent
    extends ObservableEvent
    Generic event denoting that the state of an IObservable object is about to change. Note that this event is only fired when an observable becomes stale, not when it becomes unstale; an observable that becomes unstale should always fire a change event. Staleness can be used (for example) to notify listeners when an observable has started a background thread for updating its state. Clients can safely ignore staleness.
    Since:
    1.0
    See Also:
    IObservable.isStale(), Serialized Form
    • Constructor Detail

      • StaleEvent

        public StaleEvent​(IObservable source)
        Creates a new stale event.
        Parameters:
        source - the source observable
    • Method Detail

      • dispatch

        protected void dispatch​(IObservablesListener listener)
        Description copied from class: ObservableEvent
        Dispatch this event to the given listener. Subclasses must implement this method by calling the appropriate type-safe event handling method on the given listener according to the type of this event.
        Specified by:
        dispatch in class ObservableEvent
        Parameters:
        listener - the listener that should handle the event
      • getListenerType

        protected Object getListenerType()
        Description copied from class: ObservableEvent
        Returns a unique object used for distinguishing this event type from others.
        Specified by:
        getListenerType in class ObservableEvent
        Returns:
        a unique object representing the concrete type of this event.