Constructor Detail

• CompositeEventListener

  public CompositeEventListener()

Method Detail

• addEventListener

  public void addEventListener​(EventListener listener)

  Adds an event listener to the broadcaster. It is appended to the list of previously registered listeners (the order of registration defines the calling order).

  Parameters:

  listener - the listener to be added

• removeEventListener

  public void removeEventListener​(EventListener listener)

  Removes an event listener from the broadcaster. If the event listener is not registered, nothing happens.

  Parameters:

  listener - the listener to be removed

• hasEventListeners

  public boolean hasEventListeners()

  Indicates whether any listeners have been registered with the broadcaster.

  Returns:

  true if listeners are present, false otherwise

• processEvent

  public void processEvent​(Event event)

  This method is called for each event that is generated. With the event's ID it is possible to react to certain events. Events can also simply be recorded and presented to a user. It is possible to throw an (unchecked) exception if the processing needs to be aborted because some special event occurred. This way the client can configure the behaviour of the observed application.

  Specified by:

  processEvent in interface EventListener

  Parameters:

  event - the event