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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/StyleValueTypes.h>
namespace WebCore {
namespace Style {
// <'contain'> = none | strict@(aliased-to=[size layout paint style]) | content@(aliased-to=[layout paint style]) | [ [size | inline-size] || layout || style || paint ]
// https://drafts.csswg.org/css-contain-2/#contain-property
enum class ContainValue : uint8_t {
Size,
InlineSize,
Layout,
Style,
Paint,
};
using ContainValueEnumSet = SpaceSeparatedEnumSet<ContainValue>;
struct Contain {
using EnumSet = ContainValueEnumSet;
using value_type = ContainValueEnumSet::value_type;
static constexpr ContainValueEnumSet strict { ContainValue::Size, ContainValue::Layout, ContainValue::Style, ContainValue::Paint };
static constexpr ContainValueEnumSet content { ContainValue::Layout, ContainValue::Style, ContainValue::Paint };
constexpr Contain(CSS::Keyword::None) : m_value { } { }
constexpr Contain(CSS::Keyword::Strict) : m_value { strict } { }
constexpr Contain(CSS::Keyword::Content) : m_value { content } { }
constexpr Contain(EnumSet&& set) : m_value { WTFMove(set) } { }
constexpr Contain(value_type value) : Contain { EnumSet { value } } { }
constexpr Contain(std::initializer_list<value_type> initializerList) : Contain { EnumSet { initializerList } } { }
static constexpr Contain fromRaw(EnumSet::StorageType rawValue)
{
if (!rawValue)
return CSS::Keyword::None { };
return EnumSet::fromRaw(rawValue);
}
constexpr EnumSet::StorageType toRaw() const { return m_value.toRaw(); }
constexpr bool contains(value_type e) const { return m_value.contains(e); }
constexpr bool containsAny(EnumSet other) const { return m_value.containsAny(other.value); }
constexpr bool containsAll(EnumSet other) const { return m_value.containsAll(other.value); }
constexpr bool containsOnly(EnumSet other) const { return m_value.containsOnly(other.value); }
constexpr void add(EnumSet other) { m_value.value.add(other.value); }
constexpr bool isNone() const { return m_value.isEmpty(); }
template<typename... F> constexpr decltype(auto) switchOn(F&&... f) const
{
auto visitor = WTF::makeVisitor(std::forward<F>(f)...);
if (isNone())
return visitor(CSS::Keyword::None { });
// Handle "strict" and "content" shorthands
if (m_value == strict)
return visitor(CSS::Keyword::Strict { });
if (m_value == content)
return visitor(CSS::Keyword::Content { });
return visitor(m_value);
}
constexpr bool operator==(const Contain&) const = default;
private:
EnumSet m_value;
};
// MARK: - Conversion
template<> struct CSSValueConversion<Contain> { auto operator()(BuilderState&, const CSSValue&) -> Contain; };
} // namespace Style
} // namespace WebCore
DEFINE_VARIANT_LIKE_CONFORMANCE(WebCore::Style::Contain)
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