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 "CSSValue.h"
33#include "MediaFeatureNames.h"
34#include <wtf/PassOwnPtr.h>
35#include <wtf/RefPtr.h>
36#include <wtf/text/AtomicString.h>
37
38namespace WebCore {
39class CSSParserValueList;
40
41class MediaQueryExp {
42    WTF_MAKE_FAST_ALLOCATED;
43public:
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->equals(*m_value)));
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    PassOwnPtr<MediaQueryExp> copy() const { return adoptPtr(new MediaQueryExp(*this)); }
74
75private:
76    MediaQueryExp(const AtomicString& mediaFeature, CSSParserValueList* values);
77
78    AtomicString m_mediaFeature;
79    RefPtr<CSSValue> m_value;
80    bool m_isValid;
81    String m_serializationCache;
82};
83
84} // namespace
85
86#endif
87