/*

 * Copyright (C) 2008 Apple 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 APPLE 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 APPLE 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 SMILTime_h

#define SMILTime_h

#if ENABLE(SVG)

#include <algorithm>

namespace WebCore {

    class SMILTime {

    public:

        SMILTime() : m_time(0) { }

        SMILTime(double time) : m_time(time) { }

        SMILTime(const SMILTime& o) : m_time(o.m_time) { }

        static SMILTime unresolved() { return unresolvedValue; }

        static SMILTime indefinite() { return indefiniteValue; }

        SMILTime& operator=(const SMILTime& o) { m_time = o.m_time; return *this; }

        double value() const { return m_time; }

        bool isFinite() const { return m_time < indefiniteValue; }

        bool isIndefinite() const { return m_time == indefiniteValue; }

        bool isUnresolved() const { return m_time == unresolvedValue; }

    private:

        static const double unresolvedValue;

        static const double indefiniteValue;

        double m_time;

    };

    inline bool operator==(const SMILTime& a, const SMILTime& b) { return a.isFinite() && a.value() == b.value(); }

    inline bool operator!=(const SMILTime& a, const SMILTime& b) { return !operator==(a, b); }

    inline bool operator>(const SMILTime& a, const SMILTime& b) { return a.value() > b.value(); }

    inline bool operator<(const SMILTime& a, const SMILTime& b) { return a.value() < b.value(); }

    inline bool operator>=(const SMILTime& a, const SMILTime& b) { return a.value() > b.value() || operator==(a, b); }

    inline bool operator<=(const SMILTime& a, const SMILTime& b) { return a.value() < b.value() || operator==(a, b); }

    SMILTime operator+(const SMILTime&, const SMILTime&);

    SMILTime operator-(const SMILTime&, const SMILTime&);

    // So multiplying times does not make too much sense but SMIL defines it for duration * repeatCount

    SMILTime operator*(const SMILTime&, const SMILTime&);

}

#endif

#endif