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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 "StyleScrollFunction.h"
#include "CSSPrimitiveValueMappings.h"
#include "CSSScrollValue.h"
#include "StyleBuilderChecking.h"
#include "StyleBuilderConverter.h"
#include "StylePrimitiveKeyword+CSSValueCreation.h"
#include "StylePrimitiveKeyword+Serialization.h"
namespace WebCore {
namespace Style {
// MARK: - Conversion
auto CSSValueConversion<ScrollFunction>::operator()(BuilderState& state, const CSSValue& value) -> ScrollFunction
{
RefPtr scrollValue = requiredDowncast<CSSScrollValue>(state, value);
if (!scrollValue)
return ScrollFunction { ScrollFunctionParameters { Scroller::Nearest, ScrollAxis::Block } };
return this->operator()(state, *scrollValue);
}
auto CSSValueConversion<ScrollFunction>::operator()(BuilderState&, const CSSScrollValue& value) -> ScrollFunction
{
return ScrollFunction {
ScrollFunctionParameters {
value.scroller() ? fromCSSValueID<Scroller>(value.scroller()->valueID()) : Scroller::Nearest,
value.axis() ? fromCSSValueID<ScrollAxis>(value.axis()->valueID()) : ScrollAxis::Block
}
};
}
Ref<CSSValue> CSSValueCreation<ScrollFunction>::operator()(CSSValuePool& pool, const RenderStyle& style, const ScrollFunction& value)
{
return CSSScrollValue::create(
createCSSValue(pool, style, value.parameters.scroller),
createCSSValue(pool, style, value.parameters.axis)
);
}
// MARK: - Serialization
void Serialize<ScrollFunctionParameters>::operator()(StringBuilder& builder, const CSS::SerializationContext& context, const RenderStyle& style, const ScrollFunctionParameters& value)
{
auto hasScroller = value.scroller != Scroller::Nearest;
auto hasAxis = value.axis != ScrollAxis::Block;
bool needsSpace = false;
if (hasScroller) {
serializationForCSS(builder, context, style, value.scroller);
needsSpace = true;
}
if (hasAxis) {
if (needsSpace)
builder.append(' ');
serializationForCSS(builder, context, style, value.axis);
}
}
// MARK: - Logging
TextStream& operator<<(TextStream& ts, const ScrollFunctionParameters& value)
{
return ts << value.scroller << " "_s << value.axis;
}
} // namespace Style
} // namespace WebCore
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