Package org.docx4j.org.apache.fop.events

Interface EventBroadcaster

All Known Implementing Classes:
DefaultEventBroadcaster
public interface EventBroadcaster
The EventBroadcaster is the central relay point for events. It receives events from various parts of the application and forwards them to any registered EventListener.

  • Method Details

    • addEventListener

      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

      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

      boolean hasEventListeners()
      Indicates whether any listeners have been registered with the broadcaster.
      Returns:
      true if listeners are present, false otherwise

    • broadcastEvent

      void broadcastEvent(Event event)
      Broadcasts an event. This method is usually called from within the observed component.
      Parameters:
      event - the event to be broadcast

    • getEventProducerFor

      <T extends EventProducer> T getEventProducerFor(Class<T> clazz)
      Returns an event producer instance for the given interface class.
      Parameters:
      clazz - the Class object identifying an EventProducer interface
      Returns:
      the event producer instance