On 09/03/2021 18:21, Emilio Cobos Álvarez wrote:
On 3/9/21 17:10, Anne van Kesteren wrote:
On Tue, Mar 9, 2021 at 4:45 PM Emilio Cobos Álvarez
<emi...@mozilla.com> wrote:
Let me know if you have any concerns with this or what not.
So if I understand it correctly we'll have a getter with side effects.
Is the expectation that we can eventually remove this? Are other
browsers on board with this model?
Well, the side effect is not _quite_ that bad IMO, in the sense that the
page can't really tell whether the event is returning pixels because the
scroll was actually pixel-based (e.g., trackpads do this IIRC) or
because they didn't check deltaMode.
The only alternative to this that I can think of is basically never
return DOM_DELTA_LINE (which is what other browsers do in practice), but
that seemed both more risky for us, and also a potential regression
(knowing lines can be useful).
It seems like having all browsers have the same behaviour is going to be
better in the long run than having some weird heuristic in gecko that
acts as a footgun for authors going forward.
Do we have any way to assess the compat impact of switching to match
Blink and WebKit always?
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