Is there a way to dispatch or bubble events between two pop-up windows?

Question

Hi. I was wondering if there is a way to dispatch custom
events between two or more pop-up windows created using the
PopUpManager?
I understand how to pass an event from one pop-up window to
the main application (or FrontController) by dispatching the event
from Application.application under Cairngorm 2.0.
However, as I understand it, that will only bubble the event
through the Application chain of visual controls and not to the
other pop-up windows created using the PopUpManager.
I tried dispatching the event directly from the pop-up window
itself, but the other pop-ups still does not seem to receive the
event.
It would be nice to be able to do this so that each non-modal
pop-up can have some awareness with each other.
Thank you very much in advance.

Answer 1

If you have just 2 pop-ups you can have them each do a
addEventListener on the other, listening for the event (custom or
otherwise).
If you have an unpredicatable number, then you devise
something else. Suppose you have 3 pop-ups, p1, p2, and p3. Let's
say you also have 1 custom event, E1. Any of those pop-ups is
capable of dispatching an E1 event and you want all of them to
receive it.
Create a class that extends EventDispatcher and instantiate
an object of that class. Each pop-up "registers" with that class,
something like:
controller.addEventListener( "E1", handler ); where handler
is a function in the pop-up.
When a pop-up wants to dispatch an E1 event, it does it
through the controller: controller.dispatchEvent( new E1(data) );
This will automatically dispatch that event to all the
pop-ups, including the one that dispatched the event. So a pop-up
will have to examine the event to see if it sent it and perhaps
ignore it.