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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.
*/
#include "config.h"
#include "StyleViewFunction.h"
#include "CSSPrimitiveValueMappings.h"
#include "CSSViewValue.h"
#include "StyleBuilderChecking.h"
#include "StyleLengthWrapper+CSSValueConversion.h"
#include "StylePrimitiveKeyword+CSSValueCreation.h"
#include "StylePrimitiveKeyword+Logging.h"
#include "StylePrimitiveKeyword+Serialization.h"
#include "StylePrimitiveNumericTypes+CSSValueCreation.h"
#include "StylePrimitiveNumericTypes+Logging.h"
#include "StylePrimitiveNumericTypes+Serialization.h"
namespace WebCore {
namespace Style {
// MARK: - Conversion
auto CSSValueConversion<ViewFunction>::operator()(BuilderState& state, const CSSValue& value) -> ViewFunction
{
RefPtr viewValue = requiredDowncast<CSSViewValue>(state, value);
if (!viewValue) {
return ViewFunction {
ViewFunctionParameters {
.axis = ScrollAxis::Block,
.insets = { CSS::Keyword::Auto { } },
}
};
}
return this->operator()(state, *viewValue);
}
auto CSSValueConversion<ViewFunction>::operator()(BuilderState& state, const CSSViewValue& value) -> ViewFunction
{
auto axis = [&] {
if (RefPtr axisValue = value.axis())
return fromCSSValueID<ScrollAxis>(axisValue->valueID());
return ScrollAxis::Block;
}();
auto startInset = [&] {
if (RefPtr startInsetValue = value.startInset())
return toStyleFromCSSValue<ViewTimelineInsetItem::Length>(state, *startInsetValue);
return ViewTimelineInsetItem::Length { CSS::Keyword::Auto { } };
}();
auto endInset = [&] {
if (RefPtr endInsetValue = value.endInset())
return toStyleFromCSSValue<ViewTimelineInsetItem::Length>(state, *endInsetValue);
return startInset;
}();
return ViewFunction {
ViewFunctionParameters {
.axis = axis,
.insets = { WTFMove(startInset), WTFMove(endInset) },
}
};
}
Ref<CSSValue> CSSValueCreation<ViewFunction>::operator()(CSSValuePool& pool, const RenderStyle& style, const ViewFunction& value)
{
return CSSViewValue::create(
createCSSValue(pool, style, value.parameters.axis),
createCSSValue(pool, style, value.parameters.insets.start()),
createCSSValue(pool, style, value.parameters.insets.end())
);
}
// MARK: - Serialization
void Serialize<ViewFunctionParameters>::operator()(StringBuilder& builder, const CSS::SerializationContext& context, const RenderStyle& style, const ViewFunctionParameters& value)
{
bool needsSpace = false;
if (value.axis != ScrollAxis::Block) {
serializationForCSS(builder, context, style, value.axis);
needsSpace = true;
}
if (value.insets.start() == value.insets.end()) {
if (value.insets.start().isAuto())
return;
if (needsSpace)
builder.append(' ');
serializationForCSS(builder, context, style, value.insets.start());
} else {
if (needsSpace)
builder.append(' ');
serializationForCSS(builder, context, style, value.insets.start());
builder.append(' ');
serializationForCSS(builder, context, style, value.insets.end());
}
}
// MARK: - Logging
TextStream& operator<<(TextStream& ts, const ViewFunctionParameters& value)
{
return ts << value.axis << " "_s << value.insets;
}
} // namespace Style
} // namespace WebCore
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