/*
 * Copyright (c) 2011, Google Inc. All rights reserved.
 * Copyright (C) 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:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
 * OWNER 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,
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef ScrollAnimatorSmooth_h
#define ScrollAnimatorSmooth_h

#include "ScrollAnimator.h"

#if ENABLE(SMOOTH_SCROLLING)

namespace WebCore {

class ScrollAnimation;

class ScrollAnimatorSmooth final : public ScrollAnimator {
public:
    explicit ScrollAnimatorSmooth(ScrollableArea&);
    virtual ~ScrollAnimatorSmooth();

    bool scroll(ScrollbarOrientation, ScrollGranularity, float step, float multiplier) override;
    void scrollToOffsetWithoutAnimation(const FloatPoint&) override;

#if !USE(REQUEST_ANIMATION_FRAME_TIMER)
    void cancelAnimations() override;
    void serviceScrollAnimations() override;
#endif

    void willEndLiveResize() override;
    void didAddVerticalScrollbar(Scrollbar*) override;
    void didAddHorizontalScrollbar(Scrollbar*) override;

private:

    std::unique_ptr<ScrollAnimation> m_animation;
};

} // namespace WebCore

#endif // ENABLE(SMOOTH_SCROLLING)

#endif // ScrollAnimatorSmooth_h