Collapsing a TreeItem in a TreeView with a selected child causes a visual bug while pressing

[Exopandora]

Issue: Collapsing a TreeItem in a TreeView with a selected child causes a visual bug at the bottom of the TreeView while pressing the mouse button

Steps to reproduce:

1. Start the same app as in issue #198

2. Expand "root"

3. Select "child"

4. Collapse (and hold) "root". There will be a visual bug at the bottom of the srceen

EDIT: The color you see at the bottom is cell_pressed_color from light_theme.css/dark_theme.css. I suspect that this issue is caused by not properly propagating the mouse input to the correct row cell.

[Exopandora]

Clicking (and holding) on the arrow without selecting any row also causes the same issue

[dukke]

Cool, thanks.

I think this might be an issue with JavaFX itself as I use the same standard skin of the JDK for the treeview. It appears as though a cell down below gets styled as if it had the mouse hover it (even though it doesn't)..

[Exopandora]

I already noticed that. I guess there is nothing you can do about that, really.

[dukke]

That might be the case, but I can do a little more research.. That's my hunch. Have you tried with more recent javafx versions?

[Exopandora]

Im using jfx 16

[dukke]

OK, thanks.

I'll have to research. We could file an issue on the javafx issue tracker if it's a javafx bug.

On Sat, May 8, 2021 at 9:33 PM Exopandora @.***> wrote:

Im using jfx 16

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[Exopandora]

Have you found anything yet?

[dukke]

Hi @Exopandora, sorry for the late reply. I've been very busy in my payed work.

I'm pretty inclined to this being a JavaFX bug. Have you tried using Modena and setting just an hover effect for the cells then see if this happens?

Thanks, kind regards,

[Exopandora]

After some testing i located the issue and created a PR. But as i said in the PR i don't know if this causes any side effects

[dukke]

Hi @Exopandora

Sorry for the late reply, I've been very busy with my work.

I can't seem to reproduce this issue in javafx 17. Would it be possible for you to pull the latest version and check?

Sorry again. Cheers.