<AWT Dev> [7u8] Review request for 7171045 [macosx] There are no enter or exit events reported against 8b39 for MouseEventsDuringDrag.

[Alexander Scherbatiy]

Hello,

Please review the fix for the JDK 7u8:
bug: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7171045
webrev: http://cr.openjdk.java.net/~alexsch/7171045/webrev7.00/

This is a regression after the fix 7154048 [macosx] At least drag twice, 
the toolbar can be dragged to the left side.

In the case where a toolbar is created under a mouse and it is dragged 
over the initial window the mouse enter/exit events should not be 
generated for the components which are under the toolbar.
The disabling component mouse enter/exit events generation during drag 
leads that it does not work in the case where a mouse is dragged over 
the current window.

The full fix that checks that a current window is a topmost window under 
mouse requires some changes (using tracking area instead of tracking 
rectangle and so on) is a quite complicated and it seems that it is 
risky to include it to the JDK 7u8.

Current fix just changes the condition for the component mouse 
enter/exit events generation to the initial state how it was before the 
7154048 fix.

This allows to generate components mouse enter/exit events, but the 
following test will fail:
   java/awt/Mouse/EnterExitEvents/DragWindowTest.java
However this test did not work before the 7154048 fix so it is not a 
regression.


Thanks,
Alexandr.