|PublisherListener-api| is an abstract class defining the callbacks that will be triggered in response to state changes on the :ref:`dds_layer_publisher_publisher`. By default, all these callbacks are empty and do nothing. The user should implement a specialization of this class overriding the callbacks that are needed on the application. Callbacks that are not overridden will maintain their empty implementation.
|PublisherListener-api| inherits from :ref:`dds_layer_publisher_dataWriterListener`. Therefore, it has the ability to react to all events that are reported to the :ref:`dds_layer_publisher_dataWriter`. Since events are always notified to the most specific Entity Listener that can handle the event, callbacks that |PublisherListener-api| inherits from DataWriterListener will only be called if the triggering DataWriter has no Listener attached, or if the callback is disabled by the |StatusMask-api| on the DataWriter.
|PublisherListener-api| does not add any new callback. Please, refer to the :ref:`dds_layer_publisher_dataWriterListener` for the list of inherited callbacks and override examples.