Bug 217675

Summary:	Allow gamepad button press to count as a user gesture
Product:	WebKit	Reporter:	Justin Uberti <juberti>
Component:	WebCore Misc.	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	beidson, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	Safari 14
Hardware:	Unspecified
OS:	All
See Also:	https://bugs.webkit.org/show_bug.cgi?id=235052

Description Justin Uberti 2020-10-13 15:12:22 PDT

Many of Safari's APIs require a user gesture, e.g.:
- fullscreen
- autoplay
- clipboard

However it is not possible to trigger a user gesture from an attached USB or Bluetooth gamepad, which makes it hard for apps to entirely drive their UI from a gamepad.

Chrome adopted an approach where a getGamepads() call with at least one button pushed more than 50% triggers a user gesture callback (https://bugs.chromium.org/p/chromium/issues/detail?id=381596#c13). This seems like it would be easy to adopt in Safari as well, assuming this approach gets a thumbs-up.

Comment 1 Radar WebKit Bug Importer 2020-10-14 17:44:50 PDT

<rdar://problem/70315471>

Comment 2 Brady Eidson 2020-10-15 13:02:21 PDT

This seems like a reasonable thing to do.

Comment 3 Justin Uberti 2020-10-15 14:17:47 PDT

OK, great. I'll look at grabbing a UserGestureToken somewhere like https://github.com/WebKit/webkit/blob/89c28d471fae35f1788a0f857067896a10af8974/Source/WebCore/platform/gamepad/GamepadProvider.cpp#L53 and see if that direction will work.