<Swing Dev> Review request: 6852592 (revalidate() must be smarter)

[Anthony Petrov]

Hello Swing and AWT teams,

This is a fix for the problem discussed recently (see the thread "Lw/Hw 
mixing vs revalidate()/validate()/invalidate()"). The webrev:

http://cr.openjdk.java.net/~anthony/7-23-invalidate-6852592.0/

Please review.

A couple of notes:

1. We need to get a CCC approval for the API specification changes. This 
will take some time.

2. The Container.invalidate() previously had a block of code that was 
executed w/o grabbing the TreeLock (a call to the 
LayoutManager2.invalidateLayout())). Now the code is moved to the 
invalidateImpl() which is always invoked under the TreeLock. This 
doesn't seem to be a problem: actually only the initial call to the 
Container.invalidate() ran the code off the lock. All subsequent 
recursive calls to this method did in fact happen under the lock. 
Therefore I assume that this change is OK.

--
best regards,
Anthony