/*
 * 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 "core/CoreExport.h"
#include "platform/heap/Handle.h"
#include "wtf/CurrentTime.h"

namespace blink {

class DocumentLoader;
class KURL;
class LocalFrame;

class CORE_EXPORT DocumentLoadTiming final {
  DISALLOW_NEW();

 public:
  explicit DocumentLoadTiming(DocumentLoader&);

  double monotonicTimeToZeroBasedDocumentTime(double) const;
  double monotonicTimeToPseudoWallTime(double) const;
  double pseudoWallTimeToMonotonicTime(double) const;

  void markNavigationStart();
  void setNavigationStart(double);

  void addRedirect(const KURL& redirectingUrl, const KURL& redirectedUrl);
  void setRedirectStart(double);
  void setRedirectEnd(double);
  void setRedirectCount(short value) { m_redirectCount = value; }
  void setHasCrossOriginRedirect(bool value) {
    m_hasCrossOriginRedirect = value;
  }

  void markUnloadEventStart();
  void markUnloadEventEnd();

  void markFetchStart();
  void setFetchStart(double);

  void setResponseEnd(double);

  void markLoadEventStart();
  void markLoadEventEnd();

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

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

  double referenceMonotonicTime() const { return m_referenceMonotonicTime; }

  DECLARE_TRACE();

 private:
  void markRedirectEnd();
  void notifyDocumentTimingChanged();
  void ensureReferenceTimesSet();
  LocalFrame* frame() const;

  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;

  Member<DocumentLoader> m_documentLoader;
};

}  // namespace blink

#endif
