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/*
* Copyright (C) 2020 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. 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 INC. 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 <WebCore/ProcessQualified.h>
#include <wtf/HashSet.h>
#include <wtf/OptionSet.h>
#include <wtf/TZoneMalloc.h>
namespace IPC {
class Decoder;
class Encoder;
}
namespace WebCore {
struct ScrollingNodeIDType;
using ScrollingNodeID = ProcessQualified<ObjectIdentifier<ScrollingNodeIDType>>;
}
namespace WebKit {
enum class RemoteScrollingUIStateChanges : uint8_t {
ScrollSnapNodes = 1 << 0,
UserScrollNodes = 1 << 1,
RubberbandingNodes = 1 << 2,
};
class RemoteScrollingUIState {
WTF_MAKE_TZONE_ALLOCATED(RemoteScrollingUIState);
public:
using Changes = RemoteScrollingUIStateChanges;
RemoteScrollingUIState() = default;
RemoteScrollingUIState(OptionSet<RemoteScrollingUIStateChanges>, HashSet<WebCore::ScrollingNodeID>&& nodesWithActiveScrollSnap, HashSet<WebCore::ScrollingNodeID>&& nodesWithActiveUserScrolls, HashSet<WebCore::ScrollingNodeID>&& nodesWithActiveRubberband);
OptionSet<RemoteScrollingUIStateChanges> changes() const { return m_changes; }
void clearChanges() { m_changes = { }; }
void reset();
const HashSet<WebCore::ScrollingNodeID>& nodesWithActiveScrollSnap() const { return m_nodesWithActiveScrollSnap; }
void addNodeWithActiveScrollSnap(WebCore::ScrollingNodeID);
void removeNodeWithActiveScrollSnap(WebCore::ScrollingNodeID);
const HashSet<WebCore::ScrollingNodeID>& nodesWithActiveUserScrolls() const { return m_nodesWithActiveUserScrolls; }
void addNodeWithActiveUserScroll(WebCore::ScrollingNodeID);
void removeNodeWithActiveUserScroll(WebCore::ScrollingNodeID);
void clearNodesWithActiveUserScroll();
const HashSet<WebCore::ScrollingNodeID>& nodesWithActiveRubberband() const { return m_nodesWithActiveRubberband; }
void addNodeWithActiveRubberband(WebCore::ScrollingNodeID);
void removeNodeWithActiveRubberband(WebCore::ScrollingNodeID);
void clearNodesWithActiveRubberband();
private:
OptionSet<RemoteScrollingUIStateChanges> m_changes;
HashSet<WebCore::ScrollingNodeID> m_nodesWithActiveScrollSnap;
HashSet<WebCore::ScrollingNodeID> m_nodesWithActiveUserScrolls;
HashSet<WebCore::ScrollingNodeID> m_nodesWithActiveRubberband;
};
} // namespace WebKit
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