406020 - Linux/Gnome: Pointing at a drop-down list box and scrolling the scroll-wheel doesn't change the selected option

Status: NEW

(Core :: Layout: Form Controls, defect)

Description

[Grey Nicholson (they/them)]

In native Gnome applications, pointing at a drop-down list box and scrolling the scroll-wheel changes the selected option: scrolling up selects the previous option and scrolling down selects the next option; without the list box dropping down.

In Firefox, pointing at a drop-down list box in content and scrolling the wheel causes the page to scroll. Pointing at a drop-down list-box in chrome (for example in the Preferences dialogue) does nothing.

This is more confusing now that Firefox's list boxes *look* like real Gnome list boxes (but don't *act* like them).

Expected behaviour:
Pointing at a drop-down list box and scrolling the scroll-wheel should change the selected option, without the list box dropping down.

Comment 1

[Boris Zbarsky [:bzbarsky]]

Pretty sure that this setup wouldn't be web-compatible (unless onchange events were somehow deferred until the user is "done scrolling", whatever that means).

Comment 2

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

I'm not sure if this is performed as default action of mouse wheel scrolling on Linux. I think that if we add a new value to LookAndFeel, we can perform this only on Linux, though.

Per comment 1 and comparing with the behavior of Gecko on other platforms, it may be risky. But I don't know the behavior on other browses on Linux.

Comment 3

[posita]

Please mark this issue as WONTFIX or INVALID. Not changing controls with the mouse wheel is the only sane behavior. If anything, that behavior should be removed from Gnome, not metastasized here.