Source/WebCore/Modules/webxr/XRFrameRequestCallback.h

/*
 * Copyright (C) 2020 Igalia S.L. 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(WEBXR)

#include "ActiveDOMCallback.h"
#include "CallbackResult.h"
#include <wtf/RefCounted.h>

namespace WebCore {

class WebXRFrame;

class XRFrameRequestCallback : public RefCounted<XRFrameRequestCallback>, public ActiveDOMCallback {
public:
    using ActiveDOMCallback::ActiveDOMCallback;

    virtual CallbackResult<void> handleEvent(double highResTimeMs, WebXRFrame&) = 0;

    unsigned callbackId() { ASSERT(m_id); return m_id; }
    void setCallbackId(unsigned id) { ASSERT(!m_id); m_id = id; }
    void cancel() { m_cancelled = true; }
    bool isCancelled() const { return m_cancelled; }

private:
    unsigned m_id { 0 };
    bool m_cancelled { false };
};

} // namespace WebCore

#endif // ENABLE(WEBXR)