On Fri, 18 Aug 2023 09:19:34 GMT, John Hendrikx <jhendr...@openjdk.org> wrote:
>> I also noticed this code, which I think will not do the correct thing when
>> `change` is not 1 or -1:
>>
>> void adjust(int change) {
>> count += change;
>>
>> if (count == 1) {
>> set(true);
>> } else if (count == 0) {
>> set(false);
>> }
>> }
>>
>> For example, if focus within currently is `false`, and it is "adjusted" by
>> 5, the count goes from 0 to 5 in one go. It will remain `false` then. Is
>> this intended?
>
>> Is it possible a user can interfere with this process by adding a listener
>> to `focusWithinProperty`? It fires events when it goes from `true` to
>> `false` and vice versa.
>
> Can disregard this, it seems the property uses a special base class that
> breaks with the general property contract.
> I also noticed this code, which I think will not do the correct thing when
> `change` is not 1 or -1:
>
> ```
> void adjust(int change) {
> count += change;
>
> if (count == 1) {
> set(true);
> } else if (count == 0) {
> set(false);
> }
> }
> ```
>
> For example, if focus within currently is `false`, and it is "adjusted" by 5,
> the count goes from 0 to 5 in one go. It will remain `false` then. Is this
> intended?
Good catch! I've added another test for this edge case.
-------------
PR Review Comment: https://git.openjdk.org/jfx/pull/1210#discussion_r1298460756
