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 MediaQuery_h
30#define MediaQuery_h
31
32#include "platform/heap/Handle.h"
33#include "wtf/PassOwnPtr.h"
34#include "wtf/Vector.h"
35#include "wtf/text/StringHash.h"
36#include "wtf/text/WTFString.h"
37
38namespace blink {
39class MediaQueryExp;
40
41typedef WillBeHeapVector<OwnPtrWillBeMember<MediaQueryExp> > ExpressionHeapVector;
42
43class MediaQuery : public NoBaseWillBeGarbageCollectedFinalized<MediaQuery> {
44    WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
45public:
46    enum Restrictor {
47        Only, Not, None
48    };
49
50    static PassOwnPtrWillBeRawPtr<MediaQuery> createNotAll();
51
52    MediaQuery(Restrictor, const String& mediaType, PassOwnPtrWillBeRawPtr<ExpressionHeapVector> exprs);
53    ~MediaQuery();
54
55    Restrictor restrictor() const { return m_restrictor; }
56    const ExpressionHeapVector& expressions() const { return *m_expressions; }
57    const String& mediaType() const { return m_mediaType; }
58    bool operator==(const MediaQuery& other) const;
59    String cssText() const;
60
61    PassOwnPtrWillBeRawPtr<MediaQuery> copy() const { return adoptPtrWillBeNoop(new MediaQuery(*this)); }
62
63    void trace(Visitor*);
64
65private:
66    MediaQuery(const MediaQuery&);
67
68    Restrictor m_restrictor;
69    String m_mediaType;
70    OwnPtrWillBeMember<ExpressionHeapVector> m_expressions;
71    String m_serializationCache;
72
73    String serialize() const;
74};
75
76} // namespace
77
78#endif
79