RFR: 8301312: Create implementation of NSAccessibilityButton protocol

[Alexander Zuev]

On Sat, 8 Apr 2023 14:18:56 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> Add the common base component for all the new implementing native classes Change native peer creation to use the new base component The new code will instantiate new protocol implementation  for the given role if it exists or an old one if it does not exist
>> Added BUTTON role implementing class
>
> modules/javafx.graphics/src/main/java/com/sun/glass/ui/mac/MacAccessible.java line 658:
> 
>> 656: 
>> 657:     MacAccessible() {
>> 658:         this.peer = _createGlassAccessible();
> 
> Now that you defer the creation of the `peer`, it might be safer to change line 798 to call `getNativeAccessible()` instead of accessing `peer` directly, in case `sendNotification()` is called before `getNativeAccessible()`, unless you know that this can't happen.

Sure, makes sense. Fixing.

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PR Review Comment: https://git.openjdk.org/jfx/pull/1084#discussion_r1162037171