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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 public:
41     MediaQueryExp(const AtomicString& mediaFeature, CSSParserValueList* values);
42     ~MediaQueryExp();
43 
mediaFeature()44     AtomicString mediaFeature() const { return m_mediaFeature; }
45 
value()46     CSSValue* value() const { return m_value.get(); }
47 
48     bool operator==(const MediaQueryExp& other) const
49     {
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 
isViewportDependent()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                                               m_mediaFeature == MediaFeatureNames::orientationMediaFeature ||
62                                               m_mediaFeature == MediaFeatureNames::aspect_ratioMediaFeature ||
63                                               m_mediaFeature == MediaFeatureNames::min_aspect_ratioMediaFeature ||
64                                               m_mediaFeature == MediaFeatureNames::max_aspect_ratioMediaFeature;  }
65 private:
66     AtomicString m_mediaFeature;
67     RefPtr<CSSValue> m_value;
68 };
69 
70 } // namespace
71 
72 #endif
73