<AWT Dev> [11] RFR 8205479: OS X: requestFocus() does not work properly for embedded frame

[Dmitry Markov]

Hello,

Could you review a fix for jdk11, please?

 bug: https://bugs.openjdk.java.net/browse/JDK-8205479
 webrev: http://cr.openjdk.java.net/~dmarkov/8205479/webrev.00/

Problem description:  
On Mac OSX when focus is transferred to some component located at embedded frame, CPlatformEmbeddedFrame.requestWindowFocus() is called to activate owning frame. However that method does nothing, (i.e. no activation happens). As a result the focus cannot be transferred to the component because its owner is not active.   

Fix: 
CPlatformEmbeddedFrame.requestWindowFocus() should activate the embedded frame, (i.e. invoke notifyActivation() for the corresponding peer). 

Thanks,
Dmitry 
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