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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,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* 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.
*/
#include "config.h"
#include "StyleAlignContent.h"
#include "StyleBuilderChecking.h"
#include "StylePrimitiveNumericTypes+CSSValueConversion.h"
namespace WebCore {
namespace Style {
StyleContentAlignmentData AlignContent::resolve(std::optional<StyleContentAlignmentData> valueForNormal) const
{
auto resolveOverflowPosition = [&](auto contentPosition) -> StyleContentAlignmentData {
switch (overflowPosition()) {
case OverflowPositionKind::None:
return { contentPosition, ContentDistribution::Default };
case OverflowPositionKind::Unsafe:
return { contentPosition, ContentDistribution::Default, OverflowAlignment::Unsafe };
case OverflowPositionKind::Safe:
return { contentPosition, ContentDistribution::Default, OverflowAlignment::Safe };
}
RELEASE_ASSERT_NOT_REACHED();
};
switch (primary()) {
case PrimaryKind::Normal:
return valueForNormal.value_or(ContentPosition::Normal);
case PrimaryKind::Baseline:
if (baselineAlignmentPreference() == BaselineAlignmentPreferenceKind::Last)
return { ContentPosition::LastBaseline, ContentDistribution::Default };
return { ContentPosition::Baseline, ContentDistribution::Default };
case PrimaryKind::SpaceBetween:
return { ContentPosition::Normal, ContentDistribution::SpaceBetween };
case PrimaryKind::SpaceAround:
return { ContentPosition::Normal, ContentDistribution::SpaceAround };
case PrimaryKind::SpaceEvenly:
return { ContentPosition::Normal, ContentDistribution::SpaceEvenly };
case PrimaryKind::Stretch:
return { ContentPosition::Normal, ContentDistribution::Stretch };
case PrimaryKind::Center:
return resolveOverflowPosition(ContentPosition::Center);
case PrimaryKind::Start:
return resolveOverflowPosition(ContentPosition::Start);
case PrimaryKind::End:
return resolveOverflowPosition(ContentPosition::End);
case PrimaryKind::FlexStart:
return resolveOverflowPosition(ContentPosition::FlexStart);
case PrimaryKind::FlexEnd:
return resolveOverflowPosition(ContentPosition::FlexEnd);
}
RELEASE_ASSERT_NOT_REACHED();
}
// MARK: - Conversion
auto CSSValueConversion<AlignContent>::operator()(BuilderState& state, const CSSValue& value) -> AlignContent
{
if (RefPtr primitiveValue = dynamicDowncast<CSSPrimitiveValue>(value)) {
switch (primitiveValue->valueID()) {
// <normal>
case CSSValueNormal:
return CSS::Keyword::Normal { };
// <baseline-position>
case CSSValueBaseline:
return CSS::Keyword::Baseline { };
// <content-distribution>
case CSSValueSpaceBetween:
return CSS::Keyword::SpaceBetween { };
case CSSValueSpaceAround:
return CSS::Keyword::SpaceAround { };
case CSSValueSpaceEvenly:
return CSS::Keyword::SpaceEvenly { };
case CSSValueStretch:
return CSS::Keyword::Stretch { };
// <overflow-position>? <content-position>
case CSSValueStart:
return CSS::Keyword::Start { };
case CSSValueEnd:
return CSS::Keyword::End { };
case CSSValueCenter:
return CSS::Keyword::Center { };
case CSSValueFlexStart:
return CSS::Keyword::FlexStart { };
case CSSValueFlexEnd:
return CSS::Keyword::FlexEnd { };
default:
state.setCurrentPropertyInvalidAtComputedValueTime();
return CSS::Keyword::Normal { };
}
}
auto pair = requiredPairDowncast<CSSPrimitiveValue>(state, value);
if (!pair)
return CSS::Keyword::Normal { };
auto consumeAfterBaselinePositionPreference = [&](auto baselinePositionPreference, auto secondValueID) -> AlignContent {
switch (secondValueID) {
case CSSValueBaseline:
return { CSS::Keyword::Baseline { }, { baselinePositionPreference } };
default:
state.setCurrentPropertyInvalidAtComputedValueTime();
return CSS::Keyword::Normal { };
}
};
auto consumeAfterOverflowPosition = [&](auto overflowPosition, auto secondValueID) -> AlignContent {
switch (secondValueID) {
case CSSValueStart:
return { CSS::Keyword::Start { }, overflowPosition };
case CSSValueEnd:
return { CSS::Keyword::End { }, overflowPosition };
case CSSValueCenter:
return { CSS::Keyword::Center { }, overflowPosition };
case CSSValueFlexStart:
return { CSS::Keyword::FlexStart { }, overflowPosition };
case CSSValueFlexEnd:
return { CSS::Keyword::FlexEnd { }, overflowPosition };
default:
state.setCurrentPropertyInvalidAtComputedValueTime();
return CSS::Keyword::Normal { };
}
};
switch (pair->first->valueID()) {
// <baseline-position>
case CSSValueFirst:
return consumeAfterBaselinePositionPreference(CSS::Keyword::First { }, pair->second->valueID());
case CSSValueLast:
return consumeAfterBaselinePositionPreference(CSS::Keyword::Last { }, pair->second->valueID());
// <overflow-position>? <content-position>
case CSSValueUnsafe:
return consumeAfterOverflowPosition(CSS::Keyword::Unsafe { }, pair->second->valueID());
case CSSValueSafe:
return consumeAfterOverflowPosition(CSS::Keyword::Safe { }, pair->second->valueID());
default:
state.setCurrentPropertyInvalidAtComputedValueTime();
return CSS::Keyword::Normal { };
}
}
} // namespace Style
} // namespace WebCore
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