On Sun, 6 Sep 2026 15:22:36 GMT, Marius Hanl <[email protected]> wrote:
> Issue only exists in the Headless platform. Consider this test code:
>
>
> KeyCombination combination = KeyCombination.valueOf("shortcut+,");
>
> KeyEvent event = new KeyEvent(KeyEvent.KEY_PRESSED, "s", "S", KeyCode.S,
> false, true, false, false);
> boolean match = combination.match(event);
>
>
> What happens is that the KeyCombination is an instance of
> `KeyCharacterCombination`.
>
> `KeyCharacterCombination` is special, because in its `match` function, it
> will call:
> `Toolkit.getToolkit().getKeyCodeForChar(getCharacter(), code));`
> which will be delegated to the `HeadlessApplication`, which will throw an
> `UnsupportedOperationException`.
>
> Most of the time, the `KeyCombination` is not an instance of
> `KeyCharacterCombination`, so this exception can only be reproduced with more
> special combinations like in the example with the comma.
>
> I used the implementation we also use in `Monocle`. Rechecked with the US
> keyboard layout on a mac.
>
> ---
>
> Trivia: JabRef found this issue when changing their tests from Monocle to
> Headless: [GHA
> run](https://github.com/JabRef/jabref/actions/runs/34032443925/job/101484543433?pr=16850)
>
> ---------
> - [x] I confirm that I make this contribution in accordance with the [OpenJDK
> Interim AI Policy](https://openjdk.org/legal/ai).
This pull request has now been integrated.
Changeset: 517a4de7
Author: Marius Hanl <[email protected]>
URL:
https://git.openjdk.org/jfx/commit/517a4de77257f531eb3615422ea6eb09e0aff88a
Stats: 209 lines in 2 files changed: 207 ins; 0 del; 2 mod
8391883: Headless Tests may throw Exception when matching a
KeyCharacterCombination
Reviewed-by: angorya, mfox
-------------
PR: https://git.openjdk.org/jfx/pull/2297
