[Rev 02] RFR: 8242489: ChoiceBox: initially toggle not sync'ed to selection

[Ajit Ghaisas]

On Thu, 16 Apr 2020 15:04:53 GMT, Jeanette Winzenburg <fastegal at openjdk.org> wrote:

>> Macroscopic issue is that initially, the toggle is not sync'ed to the selection state. Root reason is an missing else
>> block when updating toggle selection state (see report for details).
>> Fixed by introducing the else block and removing all follow-up errors that tried to amend the consequences of the
>> incorrect selection state
>> - removed listener to selected item
>> - removed toggle selection update in showing listener
>> 
>> The former also fixed the memory leak when replacing the selectionModel plus an unreported NPE when the selectionModel
>> is null initially.
>> Added tests that failed before the fix and passed after. As there had been no tests around toggle state, so added some
>> to verify that the change doesn't break. Enhanced shim/skin to allow access to popup for testing. Removed the
>> informally ignored test part for memory leak.
>
> Jeanette Winzenburg has updated the pull request incrementally with one additional commit since the last revision:
> 
>   ChoiceBox/-Skin/-SelectionTest
>   
>   - added code comments to clarify test/implemenation intention

Marked as reviewed by aghaisas (Reviewer).

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PR: https://git.openjdk.java.net/jfx/pull/177