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* Copyright (C) 2012 Apple Inc. All rights reserved.
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* Copyright (C) 2019 Igalia S.L.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#if ENABLE(ASYNC_SCROLLING) && USE(NICOSIA)
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#include "ScrollingConstraints.h"
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#include "ScrollingTreeNode.h"
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#include <wtf/RefPtr.h>
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class CompositionLayer;
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class ScrollingTreePositionedNode final : public ScrollingTreeNode {
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static Ref<ScrollingTreePositionedNode> create(ScrollingTree&, ScrollingNodeID);
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virtual ~ScrollingTreePositionedNode();
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const Vector<ScrollingNodeID>& relatedOverflowScrollingNodes() const { return m_relatedOverflowScrollingNodes; }
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ScrollingTreePositionedNode(ScrollingTree&, ScrollingNodeID);
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void commitStateBeforeChildren(const ScrollingStateNode&) override;
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void applyLayerPositions() override;
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void dumpProperties(WTF::TextStream&, ScrollingStateTreeAsTextBehavior) const override;
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Vector<ScrollingNodeID> m_relatedOverflowScrollingNodes;
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AbsolutePositionConstraints m_constraints;
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RefPtr<Nicosia::CompositionLayer> m_layer;
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} // namespace WebCore
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SPECIALIZE_TYPE_TRAITS_SCROLLING_NODE(ScrollingTreePositionedNode, isPositionedNode())
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#endif // ENABLE(ASYNC_SCROLLING) && USE(NICOSIA)