/*
 * Copyright (C) 2010 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.
 */

#pragma once

#include "DOMWindowProperty.h"
#include <wtf/MonotonicTime.h>
#include <wtf/Ref.h>
#include <wtf/RefCounted.h>

namespace WebCore {

class DocumentLoader;
class LoadTiming;
struct DocumentTiming;

class PerformanceTiming : public RefCounted<PerformanceTiming>, public DOMWindowProperty {
public:
    static Ref<PerformanceTiming> create(DOMWindow* window) { return adoptRef(*new PerformanceTiming(window)); }

    unsigned long long navigationStart() const;
    unsigned long long unloadEventStart() const;
    unsigned long long unloadEventEnd() const;
    unsigned long long redirectStart() const;
    unsigned long long redirectEnd() const;
    unsigned long long fetchStart() const;
    unsigned long long domainLookupStart() const;
    unsigned long long domainLookupEnd() const;
    unsigned long long connectStart() const;
    unsigned long long connectEnd() const;
    unsigned long long secureConnectionStart() const;
    unsigned long long requestStart() const;
    unsigned long long responseStart() const;
    unsigned long long responseEnd() const;
    unsigned long long domLoading() const;
    unsigned long long domInteractive() const;
    unsigned long long domContentLoadedEventStart() const;
    unsigned long long domContentLoadedEventEnd() const;
    unsigned long long domComplete() const;
    unsigned long long loadEventStart() const;
    unsigned long long loadEventEnd() const;

private:
    explicit PerformanceTiming(DOMWindow*);

    const DocumentTiming* documentTiming() const;
    DocumentLoader* documentLoader() const;
    LoadTiming* loadTiming() const;
    unsigned long long resourceLoadTimeRelativeToFetchStart(Seconds) const;
    unsigned long long monotonicTimeToIntegerMilliseconds(MonotonicTime) const;
};

} // namespace WebCore