[Libreoffice-bugs] [Bug 117877] New: UI: List Box mouse wheel scroll behavior cannot be changed / selecting an item scrolls the content

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=117877

            Bug ID: 117877
           Summary: UI: List Box mouse wheel scroll behavior cannot be
                    changed / selecting an item scrolls the content
           Product: LibreOffice
           Version: 6.0.4.2 release
          Hardware: All
                OS: Windows (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Base
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: fodorbalint at gmail.com

Created attachment 142377
  --> https://bugs.documentfoundation.org/attachment.cgi?id=142377&action=edit
List boxes on a Base form

When working with list boxes in Base, I have noticed some weird behavior. Not
everything is a bug per se, rather something that might be
uncommon/inconvenient to the user.
First of all, the mouse wheel scroll is always on, even if it is set to Never
or When focused.
Secondly, when you select an item in the list box, and putting the focus on the
box it at the same time, the list will scroll, so that the selected item goes
to the top (if it can). This might be useful for showing items below the
selected one to choose from, but what if I set my sight on two items, and the
first item I select is further down in the list than the other? Then I will
have to scroll back to find the second item. It would be nice if this automatic
scrolling didn't happen at all... maybe a setting can be implemented for it, if
the developers want to keep the current behavior.
When the focus is already in the list box, things work fine.
Now, when you unfocus from the list box with an item selected, you get the same
behavior, the selected item goes to the top. If there are multiple selected
items, no scrolling will happen.
If - in an unfocused state - you scroll the box with the scrollbar, as soon as
you exit the scrollbar area (no matter if you the mouse remains in the list box
area or not), the selected item will come to the top. Now this is rather
inconvenient, when you want to select another item that is not in the view. You
have to click in the box and put the focus on it first. Mouse wheel scrolling
will make life easier here as the scrolling position will only be reset, when
you exit the list box area.
Again, no issues with mulitple items selected.
I attach the example program.

Tested with Windows 10.

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