<AWT Dev> [9] Review request for 8139581: AWT components are not drawn after removal and addition to a container

[Anton Litvinov]

Hello,

Could you please review the following fix for the bug.

Bug: https://bugs.openjdk.java.net/browse/JDK-8139581
Webrev: http://cr.openjdk.java.net/~alitvinov/8139581/jdk9/webrev.00

The bug consists in the fact that sometimes X11 "Expose" events arriving 
in Toolkit thread during execution of 
"XBaseWindow.init(XCreateWindowParams)" method in another thread are not 
handled in the method "XBaseWindow.dispatchToWindow(XEvent)", because 
"XBaseWindow.initialising" field equals "NOT_INITIALISED" and 
"XBaseWindow.checkInitialised()" returns "false". A result of such not 
handled "Expose" events is not drawn AWT component, which is inserted 
back to AWT container, and whose "java.awt.Component.paint(Graphics)" 
method is not called.

The fix removes "InitialiseState.NOT_INITIALISED" from the code and this 
lets the mechanism of waiting for "INITIALISED" state work as designed 
in the method "XBaseWindow.checkInitialised".

Thank you,
Anton