WebCore/MediaQueryExp.h

   1 /*
   2  * CSS Media Query
   3  *
   4  * Copyright (C) 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY
  16  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  18  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  19  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  20  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  22  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  23  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  25  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #ifndef MediaQueryExp_h
  29 #define MediaQueryExp_h
  30
  31 #include "AtomicString.h"
  32 #include "CSSValue.h"
  33 #include "MediaFeatureNames.h"
  34 #include <wtf/RefPtr.h>
  35
  36 namespace WebCore {
  37 class CSSParserValueList;
  38
  39 class MediaQueryExp
  40 {
  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         return (other.m_mediaFeature == m_mediaFeature)
  51             && ((!other.m_value && !m_value)
  52                 || (other.m_value && m_value && other.m_value->cssText() == m_value->cssText()));
  53     }
  54
  55     bool isViewportDependent() const { return m_mediaFeature == MediaFeatureNames::widthMediaFeature ||
  56                                               m_mediaFeature == MediaFeatureNames::heightMediaFeature ||
  57                                               m_mediaFeature == MediaFeatureNames::min_widthMediaFeature ||
  58                                               m_mediaFeature == MediaFeatureNames::min_heightMediaFeature ||
  59                                               m_mediaFeature == MediaFeatureNames::max_widthMediaFeature ||
  60                                               m_mediaFeature == MediaFeatureNames::max_heightMediaFeature; }
  61 private:
  62     AtomicString m_mediaFeature;
  63     RefPtr<CSSValue> m_value;
  64 };
  65
  66 } // namespace
  67
  68 #endif