RFR: 8279640: ListView with null SelectionModel/FocusModel throws NPE [v5]

[Marius Hanl]

On Wed, 14 Sep 2022 12:18:22 GMT, Jeanette Winzenburg <fastegal at openjdk.org> wrote:

> Seeing you on a similar path :) Just to summarize, with null selectionModel
> 
> * appropriate keys on the focused row starts the edit with null selection model
> * focus navigation is left for a future issue
> 
> two suggestions:
> 
> * we might want a test to capture the start edit, f.i. on SPACE
> * file an issue covering the focus navigation to not forget?

I agree, we should look into this. 
The question is: Can we activate/edit a focused cell without a `selectionModel` (only `focusModel` set)?
And fix all inconsistencies in e.g. navigation.

I filed https://bugs.openjdk.org/browse/JDK-8293803.
Feel free to modify/comment. :)

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PR: https://git.openjdk.org/jfx/pull/711