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/*
* Copyright (C) 2025 Samuel Weinig <sam@webkit.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <WebCore/CSSPropertyParser.h>
#include <WebCore/StyleValueTypes.h>
#include <WebCore/WebAnimationTypes.h>
#include <WebCore/WebAnimationUtilities.h>
namespace WebCore {
namespace Style {
// <single-transition-property> = all | <custom-ident>
// https://www.w3.org/TR/css-transitions-1/#single-transition-property
struct SingleTransitionProperty {
struct UnknownProperty {
CustomIdentifier value;
bool operator==(const UnknownProperty&) const = default;
};
struct SingleProperty {
AnimatableCSSProperty value;
template<typename... F> decltype(auto) switchOn(F&&... f) const
{
auto visitor = WTF::makeVisitor(std::forward<F>(f)...);
return visitor(CustomIdentifier { animatablePropertyAsString(value) });
}
bool operator==(const SingleProperty&) const = default;
};
SingleTransitionProperty(CSS::Keyword::All keyword)
: m_value { keyword }
{
}
SingleTransitionProperty(CSS::Keyword::None keyword)
: m_value { keyword }
{
}
SingleTransitionProperty(CustomIdentifier&& identifier)
: m_value { fromCustomIdentifier(WTFMove(identifier)) }
{
}
SingleTransitionProperty(CSSPropertyID propertyID)
: m_value { SingleProperty { .value = propertyID } }
{
}
bool isAll() const { return WTF::holdsAlternative<CSS::Keyword::All>(m_value); }
bool isNone() const { return WTF::holdsAlternative<CSS::Keyword::None>(m_value); }
bool isUnknownProperty() const { return WTF::holdsAlternative<UnknownProperty>(m_value); }
bool isSingleProperty() const { return WTF::holdsAlternative<SingleProperty>(m_value); }
template<typename... F> decltype(auto) switchOn(F&&... f) const
{
return WTF::switchOn(m_value, std::forward<F>(f)...);
}
bool operator==(const SingleTransitionProperty&) const = default;
private:
using Kind = Variant<CSS::Keyword::All, CSS::Keyword::None, UnknownProperty, SingleProperty>;
static Kind fromCustomIdentifier(CustomIdentifier&& identifier)
{
if (isCustomPropertyName(identifier.value))
return Kind { SingleProperty { .value = WTFMove(identifier.value) } };
return Kind { UnknownProperty { .value = WTFMove(identifier) } };
}
Kind m_value;
};
DEFINE_TYPE_WRAPPER_GET(SingleTransitionProperty::UnknownProperty, value);
// MARK: - Conversion
template<> struct CSSValueConversion<SingleTransitionProperty> { auto operator()(BuilderState&, const CSSValue&) -> SingleTransitionProperty; };
} // namespace Style
} // namespace WebCore
DEFINE_TUPLE_LIKE_CONFORMANCE_FOR_TYPE_WRAPPER(WebCore::Style::SingleTransitionProperty::UnknownProperty)
DEFINE_VARIANT_LIKE_CONFORMANCE(WebCore::Style::SingleTransitionProperty::SingleProperty)
DEFINE_VARIANT_LIKE_CONFORMANCE(WebCore::Style::SingleTransitionProperty)
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