Flex: Determine if a component is showing

Question

What is the best way to determine if a component in Flex/Flash is showing on the user\'s screen? I\'m looking for an analog to Java\'s Component.isShowing() method.

The

Answer 1

Strange as it seems, now that you mention it, I don't believe there is a simple test to determine whether a component is actually visible onscreen in the sense Component.isShowing() implies.

It's also true the show and hide events don't bubble by default, so if you want to be notified of visibility changes in a descendant of a ViewStack container, you'll need to listen for them explicitly. The implementation details would vary depending on what sort of behavior you were after, but to take the simple example:

... you'll see the show and hide events for each label fire once their visible properties have been bound to their parent panels'. Hopefully that illustrates the point; you can extend it however best suits your application. Good luck!