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/*
* Copyright (C) 2014-2015 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
#if ENABLE(ASYNC_SCROLLING) && ENABLE(SCROLLING_THREAD)
#include "AsyncScrollingCoordinator.h"
namespace WebCore {
class ThreadedScrollingCoordinator : public AsyncScrollingCoordinator {
protected:
explicit ThreadedScrollingCoordinator(Page*);
virtual ~ThreadedScrollingCoordinator();
void commitTreeStateIfNeeded() override;
WEBCORE_EXPORT void hasNodeWithAnimatedScrollChanged(bool) override;
WEBCORE_EXPORT void pageDestroyed() override;
private:
WEBCORE_EXPORT void scheduleTreeStateCommit() final;
WEBCORE_EXPORT void didScheduleRenderingUpdate() final;
WEBCORE_EXPORT void willStartRenderingUpdate() final;
WEBCORE_EXPORT void didCompleteRenderingUpdate() final;
// Handle the wheel event on the scrolling thread. Returns whether the event was handled or not.
WEBCORE_EXPORT WheelEventHandlingResult handleWheelEventForScrolling(const PlatformWheelEvent&, ScrollingNodeID, std::optional<WheelScrollGestureState>) final;
WEBCORE_EXPORT void wheelEventWasProcessedByMainThread(const PlatformWheelEvent&, std::optional<WheelScrollGestureState>) final;
WEBCORE_EXPORT void startMonitoringWheelEvents(bool clearLatchingState) final;
};
} // namespace WebCore
#endif // ENABLE(ASYNC_SCROLLING) && ENABLE(SCROLLING_THREAD)
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