I have a component that will hold a Tree. In that tree are certain types of
Objects, called 'JReport' objects. Whenever a JReport Object is clicked, i want
to notify a bunch of different components. Some of these have the same parent
as the Tree, but most do not.

What is the best way to design this? I want it to be as 'black-box' as
possible, so no passing objects around if i can help it. Any suggestions?
thanks!

Lood at the 'event aggregator design pattern' perhaps.
Here is a google search key to try:
+flex +"design pattern" +"event aggregator"

HTH

Greg,
thanks for the response. i tried that google search, but only got back pages
with C# stuff in them. Is there a specific class that sets this up, or is this
strictly a design consideration? i assume the latter, but want to know if
there's any hope for the former! thanks, peter

"peteandrus" <webforumsuser@macromedia.com> wrote in message
news:ggfvkj$sje$1@forums.macromedia.com...
>I have a component that will hold a Tree. In that tree are certain types of
> Objects, called 'JReport' objects. Whenever a JReport Object is clicked, i
> want
> to notify a bunch of different components. Some of these have the same
> parent
> as the Tree, but most do not.
>
> What is the best way to design this? I want it to be as 'black-box' as
> possible, so no passing objects around if i can help it. Any suggestions?
> thanks!

The Observer pattern is a good one for this. Luckily, Flex's binding
architecture already implements this pattern. Create a model object that
you change a property of based on what object has been clicked, then bind
all the views to that property.

HTH;

Amy

You might also consider dispatching a custom event when the object is clicked.
Listeners could then be added to each component which needs to be notified, and
the listener would handle all the components' responses.