1 /*
2 * (C) 1999-2003 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2004, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
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 CSSStyleSheet_h
22 #define CSSStyleSheet_h
23
24 #include "core/css/CSSRule.h"
25 #include "core/css/StyleSheet.h"
26 #include "wtf/Noncopyable.h"
27 #include "wtf/text/TextPosition.h"
28
29 namespace WebCore {
30
31 class CSSCharsetRule;
32 class CSSImportRule;
33 class CSSParser;
34 class CSSRule;
35 class CSSRuleList;
36 class CSSStyleSheet;
37 class CSSStyleSheetResource;
38 class Document;
39 class ExceptionState;
40 class MediaQuerySet;
41 class SecurityOrigin;
42 class StyleSheetContents;
43
44 enum StyleSheetUpdateType {
45 PartialRuleUpdate,
46 EntireStyleSheetUpdate
47 };
48
49 class CSSStyleSheet : public StyleSheet {
50 public:
51 static PassRefPtr<CSSStyleSheet> create(PassRefPtr<StyleSheetContents>, CSSImportRule* ownerRule = 0);
52 static PassRefPtr<CSSStyleSheet> create(PassRefPtr<StyleSheetContents>, Node* ownerNode);
53 static PassRefPtr<CSSStyleSheet> createInline(Node*, const KURL&, const TextPosition& startPosition = TextPosition::minimumPosition(), const String& encoding = String());
54
55 virtual ~CSSStyleSheet();
56
57 virtual CSSStyleSheet* parentStyleSheet() const OVERRIDE;
ownerNode()58 virtual Node* ownerNode() const OVERRIDE { return m_ownerNode; }
59 virtual MediaList* media() const OVERRIDE;
60 virtual String href() const OVERRIDE;
title()61 virtual String title() const OVERRIDE { return m_title; }
disabled()62 virtual bool disabled() const OVERRIDE { return m_isDisabled; }
63 virtual void setDisabled(bool) OVERRIDE;
64
65 PassRefPtr<CSSRuleList> cssRules();
66 unsigned insertRule(const String& rule, unsigned index, ExceptionState&);
67 unsigned insertRule(const String& rule, ExceptionState&); // Deprecated.
68 void deleteRule(unsigned index, ExceptionState&);
69
70 // IE Extensions
71 PassRefPtr<CSSRuleList> rules();
72 int addRule(const String& selector, const String& style, int index, ExceptionState&);
73 int addRule(const String& selector, const String& style, ExceptionState&);
removeRule(unsigned index,ExceptionState & exceptionState)74 void removeRule(unsigned index, ExceptionState& exceptionState) { deleteRule(index, exceptionState); }
75
76 // For CSSRuleList.
77 unsigned length() const;
78 CSSRule* item(unsigned index);
79
clearOwnerNode()80 virtual void clearOwnerNode() OVERRIDE { didMutate(EntireStyleSheetUpdate); m_ownerNode = 0; }
ownerRule()81 virtual CSSRule* ownerRule() const OVERRIDE { return m_ownerRule; }
82 virtual KURL baseURL() const OVERRIDE;
83 virtual bool isLoading() const OVERRIDE;
84
clearOwnerRule()85 void clearOwnerRule() { m_ownerRule = 0; }
86 Document* ownerDocument() const;
mediaQueries()87 MediaQuerySet* mediaQueries() const { return m_mediaQueries.get(); }
88 void setMediaQueries(PassRefPtr<MediaQuerySet>);
setTitle(const String & title)89 void setTitle(const String& title) { m_title = title; }
90
91 class RuleMutationScope {
92 WTF_MAKE_NONCOPYABLE(RuleMutationScope);
93 public:
94 RuleMutationScope(CSSStyleSheet*);
95 RuleMutationScope(CSSRule*);
96 ~RuleMutationScope();
97
98 private:
99 CSSStyleSheet* m_styleSheet;
100 };
101
102 void willMutateRules();
103 void didMutateRules();
104 void didMutate(StyleSheetUpdateType = PartialRuleUpdate);
105
106 void clearChildRuleCSSOMWrappers();
107
108 void registerExtraChildRuleCSSOMWrapper(PassRefPtr<CSSRule>);
109
contents()110 StyleSheetContents* contents() const { return m_contents.get(); }
111
isInline()112 bool isInline() const { return m_isInlineStylesheet; }
startPositionInSource()113 TextPosition startPositionInSource() const { return m_startPosition; }
114
115 private:
116 CSSStyleSheet(PassRefPtr<StyleSheetContents>, CSSImportRule* ownerRule);
117 CSSStyleSheet(PassRefPtr<StyleSheetContents>, Node* ownerNode, bool isInlineStylesheet, const TextPosition& startPosition);
118
isCSSStyleSheet()119 virtual bool isCSSStyleSheet() const { return true; }
type()120 virtual String type() const { return "text/css"; }
121
122 void extraCSSOMWrapperIndices(Vector<unsigned>& indices);
123 void reattachChildRuleCSSOMWrappers(const Vector<unsigned>& extraCSSOMWrapperIndices);
124
125 bool canAccessRules() const;
126
127 RefPtr<StyleSheetContents> m_contents;
128 bool m_isInlineStylesheet;
129 bool m_isDisabled;
130 String m_title;
131 RefPtr<MediaQuerySet> m_mediaQueries;
132
133 Node* m_ownerNode;
134 CSSRule* m_ownerRule;
135
136 TextPosition m_startPosition;
137
138 mutable RefPtr<MediaList> m_mediaCSSOMWrapper;
139 mutable Vector<RefPtr<CSSRule> > m_childRuleCSSOMWrappers;
140 // These are CSSOMWrappers that come from getMatchedCSSRules and thus don't map 1-1 to
141 // the StyleRules in the StyleSheetContents.
142 mutable Vector<RefPtr<CSSRule> > m_extraChildRuleCSSOMWrappers;
143 mutable OwnPtr<CSSRuleList> m_ruleListCSSOMWrapper;
144 };
145
RuleMutationScope(CSSStyleSheet * sheet)146 inline CSSStyleSheet::RuleMutationScope::RuleMutationScope(CSSStyleSheet* sheet)
147 : m_styleSheet(sheet)
148 {
149 if (m_styleSheet)
150 m_styleSheet->willMutateRules();
151 }
152
RuleMutationScope(CSSRule * rule)153 inline CSSStyleSheet::RuleMutationScope::RuleMutationScope(CSSRule* rule)
154 : m_styleSheet(rule ? rule->parentStyleSheet() : 0)
155 {
156 if (m_styleSheet)
157 m_styleSheet->willMutateRules();
158 }
159
~RuleMutationScope()160 inline CSSStyleSheet::RuleMutationScope::~RuleMutationScope()
161 {
162 if (m_styleSheet)
163 m_styleSheet->didMutateRules();
164 }
165
166 DEFINE_TYPE_CASTS(CSSStyleSheet, StyleSheet, sheet, sheet->isCSSStyleSheet(), sheet.isCSSStyleSheet());
167
168 } // namespace
169
170 #endif
171