[scroll-timeline] add the ScrollTimeline interface

https://bugs.webkit.org/show_bug.cgi?id=264407

Reviewed by Chris Dumez.

The Scroll-driven Animations spec introduces a new ScrollTimeline subclass of AnimationTimeline.
We add the IDL and supporting code for this interface as well as the supporting ScrollTimelineOptions
dictionary and ScrollAxis enum, all behind the appropriate runtime flag.

We're skipping some additional tests because merely exposing the ScrollTimeline interface makes some new
tests progress further and turn early failures into timeouts for unfulfilled promises.

* LayoutTests/TestExpectations:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/cancel-animation-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/constructor-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/current-time-nan-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/current-time-root-scroller-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/current-time-writing-modes-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/effect-updateTiming-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/finish-animation-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/intrinsic-iteration-duration.tentative-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/pause-animation-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/play-animation-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/reverse-animation-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/scroll-animation-effect-fill-modes.tentative-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/scroll-animation-effect-phases.tentative-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/scroll-animation-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/scroll-animation-inactive-timeline-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/scroll-timeline-invalidation-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/scroll-timeline-range-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/scroll-timeline-snapshotting-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/setting-current-time-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/setting-playback-rate-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/setting-start-time-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/setting-timeline.tentative-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/source-quirks-mode-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/update-playback-rate-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/updating-the-finished-state-expected.txt:
* LayoutTests/platform/mac-wk1/TestExpectations:
* Source/WebCore/CMakeLists.txt:
* Source/WebCore/DerivedSources-input.xcfilelist:
* Source/WebCore/DerivedSources-output.xcfilelist:
* Source/WebCore/DerivedSources.make:
* Source/WebCore/Sources.txt:
* Source/WebCore/WebCore.xcodeproj/project.pbxproj:
* Source/WebCore/animation/AnimationTimeline.h:
(WebCore::AnimationTimeline::isDocumentTimeline const):
(WebCore::AnimationTimeline::isScrollTimeline const):
(WebCore::AnimationTimeline::isDocumentTimeline): Deleted.
* Source/WebCore/animation/DocumentTimeline.h:
* Source/WebCore/animation/ScrollAxis.h: Copied from Source/WebCore/animation/AnimationTimeline.h.
* Source/WebCore/animation/ScrollAxis.idl: Added.
* Source/WebCore/animation/ScrollTimeline.cpp: Copied from Source/WebCore/animation/AnimationTimeline.h.
(WebCore::ScrollTimeline::create):
(WebCore::ScrollTimeline::ScrollTimeline):
* Source/WebCore/animation/ScrollTimeline.h: Copied from Source/WebCore/animation/AnimationTimeline.h.
* Source/WebCore/animation/ScrollTimeline.idl: Added.
* Source/WebCore/animation/ScrollTimelineOptions.h: Copied from Source/WebCore/animation/AnimationTimeline.h.
* Source/WebCore/animation/ScrollTimelineOptions.idl: Added.
* Source/WebCore/bindings/js/WebCoreBuiltinNames.h:

Canonical link: https://commits.webkit.org/270451@main

LayoutTests/TestExpectations

@@ -6811,12 +6811,30 @@ imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/animation-wit
 imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/animation-with-overflow-hidden.html [ Skip ]
 imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/animation-with-root-scroller.html [ Skip ]
 imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/animation-with-transform.html [ Skip ]
+imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/cancel-animation.html [ Skip ]
 imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/constructor-no-document.html [ Skip ]
 imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/custom-property.html [ Skip ]
+imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/effect-updateTiming.html [ Skip ]
+imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/finish-animation.html [ Skip ]
 imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/layout-changes-on-percentage-based-timeline.html [ Skip ]
+imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/pause-animation.html [ Skip ]
+imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/play-animation.html [ Skip ]
 imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/progress-based-effect-delay.tentative.html [ Skip ]
+imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/reverse-animation.html [ Skip ]
+imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/scroll-animation-effect-fill-modes.tentative.html [ Skip ]
+imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/scroll-animation-effect-phases.tentative.html [ Skip ]
+imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/scroll-animation.html [ Skip ]
+imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/scroll-animation-inactive-timeline.html [ Skip ]
+imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/scroll-timeline-invalidation.html [ Skip ]
+imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/scroll-timeline-range.html [ Skip ]
 imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/set-current-time-before-play.html [ Skip ]
+imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/setting-current-time.html [ Skip ]
+imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/setting-playback-rate.html [ Skip ]
+imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/setting-start-time.html [ Skip ]
+imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/setting-timeline.tentative.html [ Skip ]
 imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/two-animations-attach-to-same-scroll-timeline-cancel-one.html [ Skip ]
+imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/update-playback-rate.html [ Skip ]
+imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/updating-the-finished-state.html [ Skip ]
 imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/two-animations-attach-to-same-scroll-timeline.html [ Skip ]
 imported/w3c/web-platform-tests/scroll-animations/view-timelines/range-boundary.html [ Skip ]
 

LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/cancel-animation-expected.txt

@@ -1,12 +1,14 @@
 
-FAIL Canceling an animation should cause its start time and hold time to be unresolved promise_test: Unhandled rejection with value: object "ReferenceError: Can't find variable: ScrollTimeline"
-FAIL A play-pending ready promise should be rejected when the animation is canceled promise_test: Unhandled rejection with value: object "ReferenceError: Can't find variable: ScrollTimeline"
-FAIL A pause-pending ready promise should be rejected when the animation is canceled promise_test: Unhandled rejection with value: object "ReferenceError: Can't find variable: ScrollTimeline"
-FAIL When an animation is canceled, it should create a resolved Promise promise_test: Unhandled rejection with value: object "ReferenceError: Can't find variable: ScrollTimeline"
-FAIL The ready promise should be replaced when the animation is canceled promise_test: Unhandled rejection with value: object "ReferenceError: Can't find variable: ScrollTimeline"
-FAIL The finished promise should NOT be rejected if the animation is already idle promise_test: Unhandled rejection with value: object "ReferenceError: Can't find variable: ScrollTimeline"
-FAIL The cancel event should NOT be fired if the animation is already idle promise_test: Unhandled rejection with value: object "ReferenceError: Can't find variable: ScrollTimeline"
-FAIL Canceling an animation should fire cancel event on orphaned element promise_test: Unhandled rejection with value: object "ReferenceError: Can't find variable: ScrollTimeline"
-FAIL Canceling an animation with inactive timeline should cause its start time and hold time to be unresolved promise_test: Unhandled rejection with value: object "ReferenceError: Can't find variable: ScrollTimeline"
-FAIL oncancel event is fired when the timeline is inactive. promise_test: Unhandled rejection with value: object "ReferenceError: Can't find variable: ScrollTimeline"
+Harness Error (TIMEOUT), message = null
+
+PASS Canceling an animation should cause its start time and hold time to be unresolved
+PASS A play-pending ready promise should be rejected when the animation is canceled
+TIMEOUT A pause-pending ready promise should be rejected when the animation is canceled Test timed out
+NOTRUN When an animation is canceled, it should create a resolved Promise
+NOTRUN The ready promise should be replaced when the animation is canceled
+NOTRUN The finished promise should NOT be rejected if the animation is already idle
+NOTRUN The cancel event should NOT be fired if the animation is already idle
+NOTRUN Canceling an animation should fire cancel event on orphaned element
+NOTRUN Canceling an animation with inactive timeline should cause its start time and hold time to be unresolved
+NOTRUN oncancel event is fired when the timeline is inactive.
 

LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/constructor-expected.txt

@@ -1,16 +1,13 @@
 
-FAIL A ScrollTimeline can be created with a source Can't find variable: ScrollTimeline
-FAIL A ScrollTimeline can be created with a non-scrolling source Can't find variable: ScrollTimeline
-FAIL A ScrollTimeline created with a null source should have no source Can't find variable: ScrollTimeline
-FAIL A ScrollTimeline created without a source should use the document.scrollingElement Can't find variable: ScrollTimeline
-FAIL A ScrollTimeline created with the default axis should default to 'block' Can't find variable: ScrollTimeline
-FAIL 'block' is a valid axis value Can't find variable: ScrollTimeline
-FAIL 'inline' is a valid axis value Can't find variable: ScrollTimeline
-FAIL 'x' is a valid axis value Can't find variable: ScrollTimeline
-FAIL 'y' is a valid axis value Can't find variable: ScrollTimeline
-FAIL Creating a ScrollTimeline with an invalid axis value should throw assert_throws_js: function "function() {
-    new ScrollTimeline({axis: 'nonsense'})
-  }" threw object "ReferenceError: Can't find variable: ScrollTimeline" ("ReferenceError") expected instance of function "function TypeError() {
-    [native code]
-}" ("TypeError")
+PASS A ScrollTimeline can be created with a source
+PASS A ScrollTimeline can be created with a non-scrolling source
+PASS A ScrollTimeline created with a null source should have no source
+FAIL A ScrollTimeline created without a source should use the document.scrollingElement assert_equals: expected Element node <html><head><meta charset="utf-8">
+<title>ScrollTimeline ... but got null
+PASS A ScrollTimeline created with the default axis should default to 'block'
+PASS 'block' is a valid axis value
+PASS 'inline' is a valid axis value
+PASS 'x' is a valid axis value
+PASS 'y' is a valid axis value
+PASS Creating a ScrollTimeline with an invalid axis value should throw
 

LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/current-time-nan-expected.txt

@@ -1,6 +1,6 @@
 
-FAIL currentTime should be null for a display: inline source Can't find variable: ScrollTimeline
-FAIL currentTime should be null for a display: none source Can't find variable: ScrollTimeline
-FAIL currentTime should be null for an unattached source Can't find variable: ScrollTimeline
-FAIL currentTime should be null when the source is not a scroller Can't find variable: ScrollTimeline
+PASS currentTime should be null for a display: inline source
+PASS currentTime should be null for a display: none source
+PASS currentTime should be null for an unattached source
+PASS currentTime should be null when the source is not a scroller
 

LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/current-time-root-scroller-expected.txt

@@ -1,3 +1,3 @@
 
-FAIL currentTime calculates the correct time for a document.scrollingElement source promise_test: Unhandled rejection with value: object "ReferenceError: Can't find variable: ScrollTimeline"
+FAIL currentTime calculates the correct time for a document.scrollingElement source promise_test: Unhandled rejection with value: object "TypeError: null is not an object (evaluating 'actual.unit')"
 

LayoutTests/imported/w3c/web-platform-tests/scroll-animations/scroll-timelines/current-time-writing-modes-expected.txt

@@ -1,5 +1,5 @@
 
-FAIL currentTime handles direction: rtl correctly promise_test: Unhandled rejection with value: object "ReferenceError: Can't find variable: ScrollTimeline"
-FAIL currentTime handles writing-mode: vertical-rl correctly promise_test: Unhandled rejection with value: object "ReferenceError: Can't find variable: ScrollTimeline"
-FAIL currentTime handles writing-mode: vertical-lr correctly promise_test: Unhandled rejection with value: object "ReferenceError: Can't find variable: ScrollTimeline"
+FAIL currentTime handles direction: rtl correctly promise_test: Unhandled rejection with value: object "TypeError: null is not an object (evaluating 'actual.unit')"
+FAIL currentTime handles writing-mode: vertical-rl correctly promise_test: Unhandled rejection with value: object "TypeError: null is not an object (evaluating 'actual.unit')"
+FAIL currentTime handles writing-mode: vertical-lr correctly promise_test: Unhandled rejection with value: object "TypeError: null is not an object (evaluating 'actual.unit')"