Not receiving Event in Activity's EventHandler without Scheduler.scheduleDeferred

Hi,

 I ran into a weird situation. In my activity's start I have the following code at the end of the method:

    public void start(AcceptsOneWidget containerWidget, EventBus eventBus) {

             homeView = clientFactory.getHomeView();

 

        clientFactory.getEventBus().addHandler(HomeDataEvent.TYPE, new HomeDataEventHandler(){

public void onEvent(HomeDataEvent event) { 

logger.severe("on event "+event);

showOrders(event);

}

});        

        containerWidget.setWidget(homeView.asWidget());

        clientFactory.getDataProvider().getOrders(clientFactory.getSession().getCurrentUser());

  }

Now, my MockDataProvider's getOrders() method simply fires a HomeDataEvent with some dummy data.

public void getOrders(UserInfo ui) {

ArrayList<OrderInfo> oil = new ArrayList<OrderInfo>();

OrderInfo oi = new OrderInfo("123456", "dav@a.com");

oil.add(oi);

HomeDataEvent hde = new HomeDataEvent();

hde.setOrders(oil);

logger.severe("got orders. firing HDE "); //This line is printed but the event is not received by the handler

cf.getEventBus().fireEvent(hde);

}

I was expecting the EventHandler code registered in Activity's start method to be called. But it was never called.

Then I changed the registration code to:

        Scheduler.get().scheduleDeferred(new Scheduler.ScheduledCommand()

        {

            public void execute()

            {

            clientFactory.getDataProvider().getOrders(clientFactory.getSession().getCurrentUser());

            }

        });

And it worked. So basically, unless the start() method finishes, the handler is not registered? Any idea what is happening and why it does not work without the scheduleDeferred? 

thank you,

Andy.

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