RFR: 8361283: [Accessibility, macOS, VoiceOver] VoiceOver announced Tab items of JTabbedPane as RadioButton on macOS [v2]

[Artem Semenov]

On Wed, 2 Jul 2025 15:37:30 GMT, Abhishek Kumar <abhiscxk at openjdk.org> wrote:

>> **Issue** : VO doesn't announce Tab items of a JTabbedPane as RadioButton which is wrong. 
>> 
>> **Analysis** : That is due to the role mapping of tab items as `NSAccessibilityRadioButtonRole` in `JavaAccessibilityUtilities.m` file. Since the accessibility role description is fetched in `accessibilityRoleDescription` API if `CommonComponentAccessiblity.m` file, the sub-role passed as a parameter is `nil`, returned value is RadioButton..
>> 
>> **Proposed Fix** : Fix is to get the correct accessibility role description from Appkit, we should pass `NSAccessibilityTabButtonSubrole` in the subrole parameter and that returns the accessibility role as `Tab` and is announced correctly by VO.
>> 
>> **Testing** : Manual test case has been added to verify the fix.
>
> Abhishek Kumar has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add test

src/java.desktop/macosx/native/libawt_lwawt/awt/a11y/CommonComponentAccessibility.m line 865:

> 863:     NSString *value = nil;
> 864: 
> 865:     if ([[self javaRole] isEqualToString:@"pagetab"]) {

Мне кажется было бы лучше просто переопределить:

- (NSString *)accessibilityRoleDescription

В ```src/java.desktop/macosx/native/libawt_lwawt/awt/a11y/TabButtonAccessibility.m```


It seems it would be better to simply override:

- (NSString *)accessibilityRoleDescription

in ```src/java.desktop/macosx/native/libawt_lwawt/awt/a11y/TabButtonAccessibility.m```

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PR Review Comment: https://git.openjdk.org/jdk/pull/26096#discussion_r2185445536