Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 7c622cdabaac4b0533013ce441c2268072fbd3e7
https://github.com/WebKit/WebKit/commit/7c622cdabaac4b0533013ce441c2268072fbd3e7
Author: Joanne Pan <[email protected]>
Date: 2026-04-15 (Wed, 15 Apr 2026)
Changed paths:
A LayoutTests/fast/events/touch/ios/slider-touch-drag-quirk-expected.txt
A LayoutTests/fast/events/touch/ios/slider-touch-drag-quirk.html
M Source/WebCore/page/Quirks.cpp
M Source/WebCore/page/QuirksData.h
Log Message:
-----------
Facebook: Unable to drag volume slider in video's media control.
https://bugs.webkit.org/show_bug.cgi?id=311586
rdar://174179871
Reviewed by Tim Nguyen and Abrar Rahman Protyasha.
The problem: On iPad Safari, Facebook's video volume slider
only responds to taps and not drags because it is expecting mousemove events.
While there is a existing Quirk that synthesizes
mouse events from touch, I thought it was too broad to apply
that to every touch event on all of facebook.com. Possible consequences
being double handling in React components that work
fine currently.
The fix: Inject a JS quirk for facebook.com that converts touch
events into mouse events only on [role="slider"] elements.
The mousedown is deferred to the first touchmove to
avoid interfering with tap interactions. Also applies
touch:action to prevent page scrolling during slider drag.
* LayoutTests/fast/events/touch/ios/slider-touch-drag-quirk-expected.txt: Added.
* LayoutTests/fast/events/touch/ios/slider-touch-drag-quirk.html: Added.
* Source/WebCore/page/Quirks.cpp:
* Source/WebCore/page/QuirksData.h:
Canonical link: https://commits.webkit.org/311328@main
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