RFR: 8322239: [macos] a11y : java.lang.NullPointerException is thrown when focus is moved on the JTabbedPane

[Sergey Bylokhov]

On Tue, 6 Feb 2024 20:13:01 GMT, Alexander Zuev <kizune at openjdk.org> wrote:

> Add null check for the Aqua LnF situation when tab is hidden die to the tabs overflow.

src/java.desktop/share/classes/javax/swing/JTabbedPane.java line 2340:

> 2338: 
> 2339:         public Point getLocationOnScreen() {
> 2340:              Point parentLocation = parent.getLocationOnScreen();

possibly the "parent.getLocationOnScreen()" should be wrapped by the "try/catch IllegalComponentStateException"? If some parent is not visible then that exception will be thrown, but per the spec, the null should be returned.

I think this could be covered by the test since the change is in the public shared code.

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PR Review Comment: https://git.openjdk.org/jdk/pull/17736#discussion_r1483846936