Take the bus yourself!!

viernes septiembre 23, 2005 | Event bus | Permalink | Comentarios [5]

So you may want to take the bus yourself and see how well it goes. Note that this is an alpha version and I'm still experimenting with it (I'm working out a demo). I'd suggest you generating javadoc. It's just six classes, but don't panic! Of those six just two are public (and one of them is not a class but an annotation). This is one of my Type I aggregators: public class StatusMessagesMediator { private Statusbar statusbar; public StatusMessagesMediator( Statusbar aStatusbar ) { statusbar = aStatusbar; } @TopicListener( topicName="filesystem.events" ) public void onFilesystemEvent( TopicManager aTopicManager, FilesystemEvent anEvent ) { switch( anEvent.getEventType() ) { case FilesystemEvent.SELECTION_TYPE: statusbar.setStatusMessage( anEvent.getFile().getName() ); } } } To attach the mediator (aggregator) to the bus just write: StatusMessagesMediator mediator = new StatusMessagesMediator(); topicManager.addTopicListener( mediator ); To attach a macro-component to the bus just write: FilesystemViewer viewer = new FilesystemViewer(); topicManager.addEventSource( "filesystem.events", viewer, FilesystemEventListener.class, ActionListener.class, (any other EventListener class here)... ); (Note that you specify listener types and not events, sorry). I decided to post it here just because the java.net project is still under approval (maybe they're surprised it's just six classes ;-) ) During this weekend (if time permits) I'll think about building a Type II aggregator using a Type I aggregator. (Hint: split the aggregator above into two ones. One with instances and another without instances, change topic names, done?) Sorry for the short post (I'm in a hurry now). Enjoy it. Have a good weekend. Keep Swinging, Antonio