/*
 * 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:
 * 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 GOOGLE INC. ``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 GOOGLE INC. 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 DocumentLoadTiming_h
#define DocumentLoadTiming_h

#include <wtf/CurrentTime.h>

namespace WebCore {

class Frame;
class KURL;

class DocumentLoadTiming {
public:
    DocumentLoadTiming();

    void markNavigationStart(Frame*);
    void setNavigationStart(double);
    void addRedirect(const KURL& redirectingUrl, const KURL& redirectedUrl);
    double convertMonotonicTimeToDocumentTime(double) const;

    // FIXME: Once convertMonotonicTimeToDocumentTime is zero-based, then this
    // function and convertMonotonicTimeToDocumentTime can be merged. See
    // https://bugs.webkit.org/show_bug.cgi?id=84912 for more details.
    double convertMonotonicTimeToZeroBasedDocumentTime(double) const;

    void markUnloadEventStart() { m_unloadEventStart = monotonicallyIncreasingTime(); }
    void markUnloadEventEnd() { m_unloadEventEnd = monotonicallyIncreasingTime(); }
    void markRedirectStart() { m_redirectStart = monotonicallyIncreasingTime(); }
    void markRedirectEnd() { m_redirectEnd = monotonicallyIncreasingTime(); }
    void markFetchStart() { m_fetchStart = monotonicallyIncreasingTime(); }
    void setResponseEnd(double monotonicTime) { m_responseEnd = monotonicTime; }
    void markLoadEventStart() { m_loadEventStart = monotonicallyIncreasingTime(); }
    void markLoadEventEnd() { m_loadEventEnd = monotonicallyIncreasingTime(); }

    void setHasSameOriginAsPreviousDocument(bool value) { m_hasSameOriginAsPreviousDocument = value; }

    double navigationStart() const { return convertMonotonicTimeToDocumentTime(m_navigationStart); }
    double unloadEventStart() const { return convertMonotonicTimeToDocumentTime(m_unloadEventStart); }
    double unloadEventEnd() const { return convertMonotonicTimeToDocumentTime(m_unloadEventEnd); }
    double redirectStart() const { return convertMonotonicTimeToDocumentTime(m_redirectStart); }
    double redirectEnd() const { return convertMonotonicTimeToDocumentTime(m_redirectEnd); }
    short redirectCount() const { return m_redirectCount; }
    double fetchStart() const { return convertMonotonicTimeToDocumentTime(m_fetchStart); }
    double responseEnd() const { return convertMonotonicTimeToDocumentTime(m_responseEnd); }
    double loadEventStart() const { return convertMonotonicTimeToDocumentTime(m_loadEventStart); }
    double loadEventEnd() const { return convertMonotonicTimeToDocumentTime(m_loadEventEnd); }
    bool hasCrossOriginRedirect() const { return m_hasCrossOriginRedirect; }
    bool hasSameOriginAsPreviousDocument() const { return m_hasSameOriginAsPreviousDocument; }

private:
    double m_referenceMonotonicTime;
    double m_referenceWallTime;
    double m_navigationStart;
    double m_unloadEventStart;
    double m_unloadEventEnd;
    double m_redirectStart;
    double m_redirectEnd;
    short m_redirectCount;
    double m_fetchStart;
    double m_responseEnd;
    double m_loadEventStart;
    double m_loadEventEnd;
    bool m_hasCrossOriginRedirect;
    bool m_hasSameOriginAsPreviousDocument;
};

} // namespace WebCore

#endif