1 /* 2 * CSS Media Query 3 * 4 * Copyright (C) 2006 Kimmo Kinnunen <kimmo.t.kinnunen (at) 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 "CSSValue.h" 33 #include "MediaFeatureNames.h" 34 #include <wtf/PassOwnPtr.h> 35 #include <wtf/RefPtr.h> 36 #include <wtf/text/AtomicString.h> 37 38 namespace WebCore { 39 class CSSParserValueList; 40 41 class MediaQueryExp { 42 WTF_MAKE_FAST_ALLOCATED; 43 public: 44 static PassOwnPtr<MediaQueryExp> create(const AtomicString& mediaFeature, CSSParserValueList* values); 45 ~MediaQueryExp(); 46 47 AtomicString mediaFeature() const { return m_mediaFeature; } 48 49 CSSValue* value() const { return m_value.get(); } 50 51 bool operator==(const MediaQueryExp& other) const 52 { 53 return (other.m_mediaFeature == m_mediaFeature) 54 && ((!other.m_value && !m_value) 55 || (other.m_value && m_value && other.m_value->cssText() == m_value->cssText())); 56 } 57 58 bool isValid() const { return m_isValid; } 59 60 bool isViewportDependent() const { return m_mediaFeature == MediaFeatureNames::widthMediaFeature || 61 m_mediaFeature == MediaFeatureNames::heightMediaFeature || 62 m_mediaFeature == MediaFeatureNames::min_widthMediaFeature || 63 m_mediaFeature == MediaFeatureNames::min_heightMediaFeature || 64 m_mediaFeature == MediaFeatureNames::max_widthMediaFeature || 65 m_mediaFeature == MediaFeatureNames::max_heightMediaFeature || 66 m_mediaFeature == MediaFeatureNames::orientationMediaFeature || 67 m_mediaFeature == MediaFeatureNames::aspect_ratioMediaFeature || 68 m_mediaFeature == MediaFeatureNames::min_aspect_ratioMediaFeature || 69 m_mediaFeature == MediaFeatureNames::max_aspect_ratioMediaFeature; } 70 71 String serialize() const; 72 73 private: 74 MediaQueryExp(const AtomicString& mediaFeature, CSSParserValueList* values); 75 76 AtomicString m_mediaFeature; 77 RefPtr<CSSValue> m_value; 78 bool m_isValid; 79 String m_serializationCache; 80 }; 81 82 } // namespace 83 84 #endif 85
