1 | /* |
2 | * (C) 1999-2003 Lars Knoll (knoll@kde.org) |
3 | * (C) 2002-2003 Dirk Mueller (mueller@kde.org) |
4 | * Copyright (C) 2002, 2006, 2007, 2012 Apple Inc. All rights reserved. |
5 | * Copyright (C) 2011 Andreas Kling (kling@webkit.org) |
6 | * |
7 | * This library is free software; you can redistribute it and/or |
8 | * modify it under the terms of the GNU Library General Public |
9 | * License as published by the Free Software Foundation; either |
10 | * version 2 of the License, or (at your option) any later version. |
11 | * |
12 | * This library is distributed in the hope that it will be useful, |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 | * Library General Public License for more details. |
16 | * |
17 | * You should have received a copy of the GNU Library General Public License |
18 | * along with this library; see the file COPYING.LIB. If not, write to |
19 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | * Boston, MA 02110-1301, USA. |
21 | */ |
22 | |
23 | #pragma once |
24 | |
25 | #include "ExceptionOr.h" |
26 | #include <wtf/TypeCasts.h> |
27 | |
28 | namespace WebCore { |
29 | |
30 | class CSSStyleSheet; |
31 | class StyleRuleBase; |
32 | |
33 | struct CSSParserContext; |
34 | |
35 | class CSSRule : public RefCounted<CSSRule> { |
36 | public: |
37 | virtual ~CSSRule() = default; |
38 | |
39 | enum Type { |
40 | UNKNOWN_RULE, |
41 | STYLE_RULE, |
42 | CHARSET_RULE, |
43 | IMPORT_RULE, |
44 | MEDIA_RULE, |
45 | FONT_FACE_RULE, |
46 | PAGE_RULE, |
47 | // 7 was VARIABLES_RULE; we now match other browsers with 7 as |
48 | // KEYFRAMES_RULE: |
49 | // <https://bugs.webkit.org/show_bug.cgi?id=71293>. |
50 | KEYFRAMES_RULE, |
51 | KEYFRAME_RULE, |
52 | NAMESPACE_RULE = 10, // Matches other browsers. |
53 | SUPPORTS_RULE = 12, |
54 | #if ENABLE(CSS_DEVICE_ADAPTATION) |
55 | WEBKIT_VIEWPORT_RULE = 15, |
56 | #endif |
57 | }; |
58 | |
59 | enum DeprecatedType { |
60 | WEBKIT_KEYFRAMES_RULE = 7, |
61 | WEBKIT_KEYFRAME_RULE = 8 |
62 | }; |
63 | |
64 | virtual Type type() const = 0; |
65 | virtual String cssText() const = 0; |
66 | virtual void reattach(StyleRuleBase&) = 0; |
67 | |
68 | void setParentStyleSheet(CSSStyleSheet* styleSheet) |
69 | { |
70 | m_parentIsRule = false; |
71 | m_parentStyleSheet = styleSheet; |
72 | } |
73 | |
74 | void setParentRule(CSSRule* rule) |
75 | { |
76 | m_parentIsRule = true; |
77 | m_parentRule = rule; |
78 | } |
79 | |
80 | CSSStyleSheet* parentStyleSheet() const |
81 | { |
82 | if (m_parentIsRule) |
83 | return m_parentRule ? m_parentRule->parentStyleSheet() : 0; |
84 | return m_parentStyleSheet; |
85 | } |
86 | |
87 | CSSRule* parentRule() const { return m_parentIsRule ? m_parentRule : 0; } |
88 | |
89 | WEBCORE_EXPORT ExceptionOr<void> setCssText(const String&); |
90 | |
91 | protected: |
92 | CSSRule(CSSStyleSheet* parent) |
93 | : m_hasCachedSelectorText(false) |
94 | , m_parentIsRule(false) |
95 | , m_parentStyleSheet(parent) |
96 | { |
97 | } |
98 | |
99 | bool hasCachedSelectorText() const { return m_hasCachedSelectorText; } |
100 | void setHasCachedSelectorText(bool hasCachedSelectorText) const { m_hasCachedSelectorText = hasCachedSelectorText; } |
101 | |
102 | const CSSParserContext& parserContext() const; |
103 | |
104 | private: |
105 | mutable unsigned char m_hasCachedSelectorText : 1; |
106 | unsigned char m_parentIsRule : 1; |
107 | |
108 | union { |
109 | CSSRule* m_parentRule; |
110 | CSSStyleSheet* m_parentStyleSheet; |
111 | }; |
112 | }; |
113 | |
114 | } // namespace WebCore |
115 | |
116 | #define SPECIALIZE_TYPE_TRAITS_CSS_RULE(ToValueTypeName, predicate) \ |
117 | SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ToValueTypeName) \ |
118 | static bool isType(const WebCore::CSSRule& rule) { return rule.type() == WebCore::predicate; } \ |
119 | SPECIALIZE_TYPE_TRAITS_END() |
120 | |