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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.
*
* 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.
*/
#pragma once
#include "CSSNumericValue.h"
#include "ScrollTimeline.h"
#include "ViewTimelineOptions.h"
#include <wtf/Ref.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class CSSViewValue;
class Element;
struct ViewTimelineInsets {
std::optional<Length> start;
std::optional<Length> end;
bool operator==(const auto& other) const { return start == other.start && end == other.end; }
};
class ViewTimeline final : public ScrollTimeline {
public:
static Ref<ViewTimeline> create(ViewTimelineOptions&& = { });
static Ref<ViewTimeline> create(const AtomString&, ScrollAxis, ViewTimelineInsets&&);
static Ref<ViewTimeline> createFromCSSValue(const CSSViewValue&);
Element* subject() const { return m_subject.get(); }
const CSSNumericValue& startOffset() const { return m_startOffset.get(); }
const CSSNumericValue& endOffset() const { return m_endOffset.get(); }
const ViewTimelineInsets& insets() const { return m_insets; }
private:
explicit ViewTimeline(ViewTimelineOptions&& = { });
explicit ViewTimeline(const AtomString&, ScrollAxis, ViewTimelineInsets&&);
Ref<CSSValue> toCSSValue() const final;
bool isViewTimeline() const final { return true; }
WeakPtr<Element, WeakPtrImplWithEventTargetData> m_subject;
Ref<CSSNumericValue> m_startOffset;
Ref<CSSNumericValue> m_endOffset;
ViewTimelineInsets m_insets;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_ANIMATION_TIMELINE(ViewTimeline, isViewTimeline())
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