On Mon, 19 Jul 2010, Greg Brown wrote:
I think of these kinds of events as a part of the public interface of a
component. Listeners respond to events they're interested in. One
such event may be---to use a very verbose and impractical name---"add a
new address form". Or "refresh this data model". Or "follow this
link". Usually these events are dispatched by a push button, but
sometimes they can be dispatched from selections in a list or table, or
selection made with a radio button or check buttons.
These are exactly the kind of events that EventBus and Pivot's pub/sub
API are intended to support. I'd suggest taking a look at one of those -
you may find a simpler solution to your problem.
I did. That system supports application global events, no? I want to use
hierarchy-scoped events. If I send a "refresh the data model" or "follow
this link" event, I don't want notify every possible listener in the
application. I want to notify an ancestor. For example, I may have n
data models. Or different components may have different interpretations
of "follow this link".
Michael
