/*

 * CSS Media Query

 *

 * Copyright (C) 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.

 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

 *

 * 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 THE AUTHOR ``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 COMPUTER, 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 MediaQueryExp_h

#define MediaQueryExp_h

#include "AtomicString.h"

#include "CSSValue.h"

#include "MediaFeatureNames.h"

#include <wtf/RefPtr.h>

namespace WebCore {

class CSSParserValueList;

class MediaQueryExp : public FastAllocBase {

public:

    MediaQueryExp(const AtomicString& mediaFeature, CSSParserValueList* values);

    ~MediaQueryExp();

    AtomicString mediaFeature() const { return m_mediaFeature; }

    CSSValue* value() const { return m_value.get(); }

    bool operator==(const MediaQueryExp& other) const

    {

        return (other.m_mediaFeature == m_mediaFeature)

            && ((!other.m_value && !m_value)

                || (other.m_value && m_value && other.m_value->cssText() == m_value->cssText()));

    }

    bool isValid() const { return m_isValid; }

    bool isViewportDependent() const { return m_mediaFeature == MediaFeatureNames::widthMediaFeature || 

                                              m_mediaFeature == MediaFeatureNames::heightMediaFeature ||

                                              m_mediaFeature == MediaFeatureNames::min_widthMediaFeature ||

                                              m_mediaFeature == MediaFeatureNames::min_heightMediaFeature ||

                                              m_mediaFeature == MediaFeatureNames::max_widthMediaFeature ||

                                              m_mediaFeature == MediaFeatureNames::max_heightMediaFeature ||

                                              m_mediaFeature == MediaFeatureNames::orientationMediaFeature ||

                                              m_mediaFeature == MediaFeatureNames::aspect_ratioMediaFeature ||

                                              m_mediaFeature == MediaFeatureNames::min_aspect_ratioMediaFeature ||

                                              m_mediaFeature == MediaFeatureNames::max_aspect_ratioMediaFeature;  }

    String serialize() const;

private:

    AtomicString m_mediaFeature;

    RefPtr<CSSValue> m_value;

    bool m_isValid;

    String m_serializationCache;

};

} // namespace

#endif