RFR: 8188026: TextFieldXXCell: NPE on calling startEdit

[Jeanette Winzenburg]

On Thu, 22 Jul 2021 19:15:54 GMT, Marius Hanl <mhanl at openjdk.org> wrote:

> Finally coming back to this, when firing a **startEdit()** while already editing e.g. a TextFieldCell, the input which was made by you gets lost and you need to start over. So this can be a potential follow-up. I didn't found anything for **cancelEdit()**.

thinking about it again: for a fully configured cell, there is no difference in behaviour before/after the fix - so the fix should be fine :) I'll start a review next week or so (after tax deadline ;) - for now will just add a suggestion for the tests.

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PR: https://git.openjdk.java.net/jfx/pull/569