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LibWeb: Fix check for missing argument in Animation constructor

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Receiving a null argument has a different result than not passing an
argument at all.
This commit is contained in:
Matthew Olsson 2024-02-10 21:11:40 -07:00 • committed by Andrew Kaster
parent bd74447dba
commit ce99636cd0
1 changed files with 3 additions and 1 deletions
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4
Userland/Libraries/LibWeb/Animations/Animation.cpp
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@ -23,13 +23,15 @@ JS_DEFINE_ALLOCATOR(Animation);
// https://www.w3.org/TR/web-animations-1/#dom-animation-animation
JS::NonnullGCPtr<Animation> Animation::create(JS::Realm& realm, JS::GCPtr<AnimationEffect> effect, JS::GCPtr<AnimationTimeline> timeline)
{
auto& vm = realm.vm();
// 1. Let animation be a new Animation object.
auto animation = realm.heap().allocate<Animation>(realm, realm);
// 2. Run the procedure to set the timeline of an animation on animation passing timeline as the new timeline or, if
// a timeline argument is missing, passing the default document timeline of the Document associated with the
// Window that is the current global object.
if (!timeline) {
if (vm.argument_count() < 2) {
auto& window = verify_cast<HTML::Window>(HTML::current_global_object());
timeline = window.associated_document().timeline();
}