Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: c536d0bbed8a18568c19a4ee4354c3ebd5a86799
https://github.com/WebKit/WebKit/commit/c536d0bbed8a18568c19a4ee4354c3ebd5a86799
Author: Wenson Hsieh <[email protected]>
Date: 2025-10-01 (Wed, 01 Oct 2025)
Changed paths:
M Source/WebKit/UIProcess/ios/WKUIScrollEdgeEffect.h
M Source/WebKit/UIProcess/ios/WKUIScrollEdgeEffect.mm
M Tools/TestWebKitAPI/Tests/ios/WKScrollViewTests.mm
Log Message:
-----------
[Liquid Glass] [iOS] Make it possible to KVO the `isHidden` property on
`webView.scrollView.topEdgeEffect`
https://bugs.webkit.org/show_bug.cgi?id=299954
rdar://161734906
Reviewed by Aditya Keerthi.
Make it possible to add KVO on `WKScrollView`'s scroll edge effects, to observe
the `isHidden`
property. This allows clients (namely, Safari) to observe when top or bottom
soft scroll pockets are
being suppressed due to the presence of a fixed or sticky element near the
edges of the viewport.
Test: Tools/TestWebKitAPI/Tests/ios/WKScrollViewTests.mm
* Source/WebKit/UIProcess/ios/WKUIScrollEdgeEffect.h:
* Source/WebKit/UIProcess/ios/WKUIScrollEdgeEffect.mm:
(-[WKUIScrollEdgeEffect isHidden]):
(-[WKUIScrollEdgeEffect _setHidden:fromSource:]):
Add a `isHidden` property that wraps the real `UIScrollEdgeEffect`'s `isHidden`
property; whenever
this changes, call `(will|did)ChangeValueForKey:`.
* Tools/TestWebKitAPI/Tests/ios/WKScrollViewTests.mm:
(-[ScrollEdgeEffectIsHiddenObserver initWithScrollEdgeEffect:callback:]):
(-[ScrollEdgeEffectIsHiddenObserver dealloc]):
(-[ScrollEdgeEffectIsHiddenObserver
observeValueForKeyPath:ofObject:change:context:]):
Add a helper object to observe changes to `-[UIScrollEdgeEffect isHidden]`.
(TestWebKitAPI::TEST(WKScrollViewTests, TopScrollEdgeEffectIsHiddenKVO)):
Canonical link: https://commits.webkit.org/300833@main
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