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/*
* Copyright (C) 2023 Apple Inc. All rights reserved.
*
* 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.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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.
*/
#pragma once
#include "CSSPrimitiveValue.h"
#include "RenderStyleConstants.h"
namespace WebCore {
// Class containing the value of a scroll() function, as used in animation-timeline:
// https://drafts.csswg.org/scroll-animations-1/#funcdef-scroll.
class CSSScrollValue final : public CSSValue {
public:
static Ref<CSSScrollValue> create()
{
return adoptRef(*new CSSScrollValue(nullptr, nullptr));
}
static Ref<CSSScrollValue> create(RefPtr<CSSValue>&& scroller, RefPtr<CSSValue>&& axis)
{
return adoptRef(*new CSSScrollValue(WTFMove(scroller), WTFMove(axis)));
}
String customCSSText(const CSS::SerializationContext&) const;
const RefPtr<CSSValue>& scroller() const { return m_scroller; }
const RefPtr<CSSValue>& axis() const { return m_axis; }
bool equals(const CSSScrollValue&) const;
IterationStatus customVisitChildren(NOESCAPE const Function<IterationStatus(CSSValue&)>& func) const
{
if (m_scroller) {
if (func(*m_scroller) == IterationStatus::Done)
return IterationStatus::Done;
}
if (m_axis) {
if (func(*m_axis) == IterationStatus::Done)
return IterationStatus::Done;
}
return IterationStatus::Continue;
}
private:
CSSScrollValue(RefPtr<CSSValue>&& scroller, RefPtr<CSSValue>&& axis)
: CSSValue(ClassType::Scroll)
, m_scroller(WTFMove(scroller))
, m_axis(WTFMove(axis))
{
}
RefPtr<CSSValue> m_scroller;
RefPtr<CSSValue> m_axis;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_CSS_VALUE(CSSScrollValue, isScrollValue())
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