<AWT Dev> [11] Review request for 8199748: Touch keyboard is not shown, if text component gets focus from other text component

[Anton Litvinov]

Hello,

Could you please review the following fix for the bug.

Bug: https://bugs.openjdk.java.net/browse/JDK-8199748
Webrev: http://cr.openjdk.java.net/~alitvinov/8199748/jdk11/webrev.00

In the fix for JDK-8166772 it was deliberately implemented that the 
touch keyboard is shown only on "MouseEvent.MOUSE_RELEASED" event and is 
hidden on "FocusEvent.FOCUS_LOST" event.

The reason of the bug is the fact that, when the touch keyboard is 
already shown for one text component and a user touches another text 
component, then the following 2 events occur in the presented order:
1. "MouseEvent.MOUSE_RELEASED" event arrives. The touch keyboard is 
shown for the new text component.
2. "FocusEvent.FOCUS_LOST" event arrives for the previous text 
component. The touch keyboard shown for the new text component becomes 
hidden.

The fix allows not to hide the touch keyboard during processing of 
"FocusEvent.FOCUS_LOST" event, if the touch keyboard has just been 
shown, as a result of processing of "MouseEvent.MOUSE_RELEASED" event, 
for the component which gets focus "FocusEvent.getOppositeComponent()".

Thank you,
Anton