Source/core/animation/CompositorAnimations.h

/*
 * Copyright (C) 2013 Google 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,
 * 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.
 */

#ifndef CompositorAnimations_h
#define CompositorAnimations_h

#include "core/animation/Timing.h"
#include "wtf/Vector.h"

namespace WebCore {

class Element;
class AnimationEffect;

class CompositorAnimations {

public:
    static CompositorAnimations* instance() { return instance(0); }
    static void setInstanceForTesting(CompositorAnimations* newInstance) { instance(newInstance); }

    virtual bool isCandidateForCompositorAnimation(const Timing&, const AnimationEffect*);
    virtual bool canStartCompositorAnimation(const Element*);
    virtual void startCompositorAnimation(const Element*, const Timing&, const AnimationEffect*, Vector<int>& startedAnimationIds);
    virtual void cancelCompositorAnimation(const Element*, int id);

protected:
    CompositorAnimations() { }

private:
    static CompositorAnimations* instance(CompositorAnimations* newInstance = 0)
    {
        static CompositorAnimations* instance = new CompositorAnimations();
        if (newInstance) {
            instance = newInstance;
        }
        return instance;
    }
};

} // namespace WebCore

#endif