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ceb9d0f8dc
"position of an Animation in the global animation list" is a fancy way of saying "which animation object was created first"
85 lines
3.3 KiB
C++
85 lines
3.3 KiB
C++
/*
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* Copyright (c) 2024, Matthew Olsson <mattco@serenityos.org>.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Animations/KeyframeEffect.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/CSS/CSSAnimation.h>
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#include <LibWeb/DOM/Element.h>
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namespace Web::CSS {
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JS::NonnullGCPtr<CSSAnimation> CSSAnimation::create(JS::Realm& realm)
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{
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return realm.heap().allocate<CSSAnimation>(realm, realm);
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}
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// https://www.w3.org/TR/css-animations-2/#animation-composite-order
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Optional<int> CSSAnimation::class_specific_composite_order(JS::NonnullGCPtr<Animations::Animation> other_animation) const
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{
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auto other = JS::NonnullGCPtr { verify_cast<CSSAnimation>(*other_animation) };
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// The existance of an owning element determines the animation class, so both animations should have their owning
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// element in the same state
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VERIFY(!m_owning_element == !other->m_owning_element);
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// Within the set of CSS Animations with an owning element, two animations A and B are sorted in composite order
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// (first to last) as follows:
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if (m_owning_element) {
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// 1. If the owning element of A and B differs, sort A and B by tree order of their corresponding owning elements.
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// With regard to pseudo-elements, the sort order is as follows:
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// - element
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// - ::marker
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// - ::before
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// - any other pseudo-elements not mentioned specifically in this list, sorted in ascending order by the Unicode
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// codepoints that make up each selector
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// - ::after
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// - element children
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if (m_owning_element.ptr() != other->m_owning_element.ptr()) {
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// FIXME: Sort by tree order
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return {};
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}
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// 2. Otherwise, sort A and B based on their position in the computed value of the animation-name property of the
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// (common) owning element.
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// FIXME: Do this when animation-name supports multiple values
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return {};
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}
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// The composite order of CSS Animations without an owning element is based on their position in the global animation list.
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return global_animation_list_order() - other->global_animation_list_order();
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}
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Animations::AnimationClass CSSAnimation::animation_class() const
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{
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if (m_owning_element)
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return Animations::AnimationClass::CSSAnimationWithOwningElement;
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return Animations::AnimationClass::CSSAnimationWithoutOwningElement;
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}
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CSSAnimation::CSSAnimation(JS::Realm& realm)
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: Animations::Animation(realm)
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{
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// FIXME:
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// CSS Animations generated using the markup defined in this specification are not added to the global animation
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// list when they are created. Instead, these animations are appended to the global animation list at the first
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// moment when they transition out of the idle play state after being disassociated from their owning element. CSS
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// Animations that have been disassociated from their owning element but are still idle do not have a defined
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// composite order.
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}
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void CSSAnimation::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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set_prototype(&Bindings::ensure_web_prototype<Bindings::CSSAnimationPrototype>(realm, "CSSAnimation"_fly_string));
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}
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void CSSAnimation::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_owning_element);
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}
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}
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