1/*
2 * (C) 1999-2003 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB.  If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21#ifndef CSSProperty_h
22#define CSSProperty_h
23
24#include "CSSValue.h"
25#include "RenderStyleConstants.h"
26#include "TextDirection.h"
27#include <wtf/PassRefPtr.h>
28#include <wtf/RefPtr.h>
29
30namespace WebCore {
31
32class CSSProperty {
33    WTF_MAKE_FAST_ALLOCATED;
34public:
35    CSSProperty(int propID, PassRefPtr<CSSValue> value, bool important = false, int shorthandID = 0, bool implicit = false)
36        : m_id(propID)
37        , m_shorthandID(shorthandID)
38        , m_important(important)
39        , m_implicit(implicit)
40        , m_value(value)
41    {
42    }
43
44    CSSProperty& operator=(const CSSProperty& other)
45    {
46        m_id = other.m_id;
47        m_shorthandID = other.m_shorthandID;
48        m_important = other.m_important;
49        m_implicit = other.m_implicit;
50        m_value = other.m_value;
51        return *this;
52    }
53
54    int id() const { return m_id; }
55    int shorthandID() const { return m_shorthandID; }
56
57    bool isImportant() const { return m_important; }
58    bool isImplicit() const { return m_implicit; }
59
60    CSSValue* value() const { return m_value.get(); }
61
62    String cssText() const;
63
64    static int resolveDirectionAwareProperty(int propertyID, TextDirection, WritingMode);
65
66    friend bool operator==(const CSSProperty&, const CSSProperty&);
67
68    // Make sure the following fits in 4 bytes. Really.
69    int m_id : 15;
70    int m_shorthandID : 15; // If this property was set as part of a shorthand, gives the shorthand.
71    bool m_important : 1;
72    bool m_implicit : 1; // Whether or not the property was set implicitly as the result of a shorthand.
73
74    RefPtr<CSSValue> m_value;
75};
76
77} // namespace WebCore
78
79namespace WTF {
80    // Properties in Vector can be initialized with memset and moved using memcpy.
81    template<> struct VectorTraits<WebCore::CSSProperty> : SimpleClassVectorTraits { };
82}
83
84#endif // CSSProperty_h
85