<Swing Dev> [10] Review request for 8188081: Text selection does not clear after focus is lost

[Semyon Sadetsky]

Hello,

Please review fix for JDK10 (the changes involve AWT and Swing):

bug: https://bugs.openjdk.java.net/browse/JDK-8188081

webrev: http://cr.openjdk.java.net/~ssadetsky/8188081/webrev.00

The 8025082 fix is reverted. Swing text selection visibility behavior is 
changed according to the next rules:

- There may be only one visible selection per window.

- If the input focus moved to another window selection remains visible 
or may change its color (depends on L&F).

- Selection may not be shown in the same color in several windows 
simultaneously.

- Activating a popup menu does not hide the current selection.

The fix should make Swing selection visibility behaving in standard way 
as in native systems UIs.

--Semyon