<Swing Dev> [8] Review request for 6505523: NullPointerException in BasicTreeUI when a node is removed by expansion listener

[Alexander Scherbatiy]

Hello,

Could you review the fix for the issue:
6505523 NullPointerException in BasicTreeUI when a node is removed by 
expansion listener
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6505523

The webrev is http://cr.openjdk.java.net/~alexsch/6505523/webrev.00

The fix checks that the path bounds do not become null for the 
isActualPath() method between actions: mouse pressed, tree node deleted, 
mouse released.

The bounds are also checked in the ensureRowsAreVisible() method in the 
same way as it fixed for the issue
4909150 WindowsTreeUI can cause NullPointerException occasionally
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4909150

Thanks,
Alexandr.