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LibWeb/CSS: Stop invalidating style when setting an animation's effect

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This reverts 6d25bf3aac

Invalidating the style here means that transitions can cause an element
to leave style computation with its "needs style update" flag set to
true. This then causes a VERIFY to fail in the TreeBuilder.

This invalidation does not otherwise seem to have any effect. The
original commit suggests this was to fix a bug, but it's not clear what
bug that was. If it reappears, we can try to solve the issue in a
different way.
This commit is contained in:
Sam Atkins 2024-10-01 14:35:24 +01:00 • committed by Tim Flynn
parent 63d9ed9d8c
commit 81596b4145
Notes: github-actions[bot] 2024-10-15 12:44:23 +00:00
4 changed files with 19 additions and 4 deletions
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1
Tests/LibWeb/Text/expected/css/transition-style-invalidation-crash.txt Normal file
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@ -0,0 +1 @@
PASS (didn't crash)

18
Tests/LibWeb/Text/input/css/transition-style-invalidation-crash.html Normal file
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@ -0,0 +1,18 @@
<!DOCTYPE html>
<script src="../include.js"></script>
<style>
.foo {
opacity: 0;
transition: opacity 200ms;
}
</style>
<ul>
<li class="foo"></li>
<li></li>
</ul>
<video src=""></video>
<script>
test(() => {
println("PASS (didn't crash)");
});
</script>

3
Userland/Libraries/LibWeb/Animations/AnimationEffect.cpp
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@ -11,7 +11,6 @@
#include <LibWeb/Bindings/AnimationEffectPrototype.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/CSS/Parser/Parser.h>
#include <LibWeb/DOM/Element.h>
#include <LibWeb/WebIDL/ExceptionOr.h>
namespace Web::Animations {
@ -205,8 +204,6 @@ WebIDL::ExceptionOr<void> AnimationEffect::update_timing(OptionalEffectTiming ti
void AnimationEffect::set_associated_animation(JS::GCPtr<Animation> value)
{
m_associated_animation = value;
if (auto* target = this->target())
target->invalidate_style(DOM::StyleInvalidationReason::AnimationEffectSetAssociatedAnimation);
}
// https://www.w3.org/TR/web-animations-1/#animation-direction

1
Userland/Libraries/LibWeb/DOM/Node.h
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@ -54,7 +54,6 @@ enum class FragmentSerializationMode {
#define ENUMERATE_STYLE_INVALIDATION_REASONS(X) \
X(AdoptedStyleSheetsList) \
X(AnimationEffectSetAssociatedAnimation) \
X(CSSFontLoaded) \
X(CSSImportRule) \
X(DidLoseFocus) \