Popups in Flex using PureMVC

I was searching for the issue of how to use popups in flex using PureMVC.

I ultimately stumbled upon the following blog which I thought will be very useful for this purpose.

http://www.newtriks.com/?p=76

Listen to Events dispatched from flex Pop-ups.

• When sending events from your pop-up window, remember that they aren’t dispatched in exactly the same manner as with other components.
  
• In general, events work much as you would expect, with one variation: events from pop-ups don’t travel down the inheritance chain to the main application root.
• Instead, events dispatched from pop-up windows are terminated at the window root.
• This is because the pop-up manager is the parent of the pop-up window.
• As a result, events launched in the pop-up don’t bubble up to the main application page, which is the eventual parent of any object in the main application.
• Popups within a Flex application are not children of the application container, but are instead children of the SystemManger.

• I can instead attach my listener to:
  Application.application.systemManager

  Then my listener will hear all bubbling events within the system, regardless of whether they originate within a Popup or a standard UIComponent.