1 /*

     2  * CSS Media Query

     3  *

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

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

     6  *

     7  * Redistribution and use in source and binary forms, with or without

     8  * modification, are permitted provided that the following conditions

     9  * are met:

    10  * 1. Redistributions of source code must retain the above copyright

    11  *    notice, this list of conditions and the following disclaimer.

    12  * 2. Redistributions in binary form must reproduce the above copyright

    13  *    notice, this list of conditions and the following disclaimer in the

    14  *    documentation and/or other materials provided with the distribution.

    15  *

    16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY

    17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR

    20  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

    21  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

    22  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

    23  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

    24  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

    27  */

    28 

    29 #ifndef MediaQueryExp_h

    30 #define MediaQueryExp_h

    31 

    32 #include "AtomicString.h"

    33 #include "CSSValue.h"

    34 #include "MediaFeatureNames.h"

    35 #include <wtf/RefPtr.h>

    36 

    37 namespace WebCore {

    38 class CSSParserValueList;

    39 

    40 class MediaQueryExp : public FastAllocBase {

    41 public:

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

    43     ~MediaQueryExp();

    44 

    45     AtomicString mediaFeature() const { return m_mediaFeature; }

    46 

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

    48 

    49     bool operator==(const MediaQueryExp& other) const

    50     {

    51         return (other.m_mediaFeature == m_mediaFeature)

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

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

    54     }

    55 

    56     bool isValid() const { return m_isValid; }

    57 

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

    59                                               m_mediaFeature == MediaFeatureNames::heightMediaFeature ||

    60                                               m_mediaFeature == MediaFeatureNames::min_widthMediaFeature ||

    61                                               m_mediaFeature == MediaFeatureNames::min_heightMediaFeature ||

    62                                               m_mediaFeature == MediaFeatureNames::max_widthMediaFeature ||

    63                                               m_mediaFeature == MediaFeatureNames::max_heightMediaFeature ||

    64                                               m_mediaFeature == MediaFeatureNames::orientationMediaFeature ||

    65                                               m_mediaFeature == MediaFeatureNames::aspect_ratioMediaFeature ||

    66                                               m_mediaFeature == MediaFeatureNames::min_aspect_ratioMediaFeature ||

    67                                               m_mediaFeature == MediaFeatureNames::max_aspect_ratioMediaFeature;  }

    68 

    69     String serialize() const;

    70 

    71 private:

    72     AtomicString m_mediaFeature;

    73     RefPtr<CSSValue> m_value;

    74     bool m_isValid;

    75     String m_serializationCache;

    76 };

    77 

    78 } // namespace

    79 

    80 #endif