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 "platform/heap/Handle.h"
27 #include "wtf/Noncopyable.h"
28 #include "wtf/text/TextPosition.h"
29
30 namespace WebCore {
31
32 class CSSCharsetRule;
33 class CSSImportRule;
34 class BisonCSSParser;
35 class CSSRule;
36 class CSSRuleList;
37 class CSSStyleSheet;
38 class CSSStyleSheetResource;
39 class Document;
40 class ExceptionState;
41 class MediaQuerySet;
42 class SecurityOrigin;
43 class StyleSheetContents;
44
45 enum StyleSheetUpdateType {
46 PartialRuleUpdate,
47 EntireStyleSheetUpdate
48 };
49
50 class CSSStyleSheet FINAL : public StyleSheet {
51 public:
52 static PassRefPtrWillBeRawPtr<CSSStyleSheet> create(PassRefPtrWillBeRawPtr<StyleSheetContents>, CSSImportRule* ownerRule = 0);
53 static PassRefPtrWillBeRawPtr<CSSStyleSheet> create(PassRefPtrWillBeRawPtr<StyleSheetContents>, Node* ownerNode);
54 static PassRefPtrWillBeRawPtr<CSSStyleSheet> createInline(Node*, const KURL&, const TextPosition& startPosition = TextPosition::minimumPosition(), const String& encoding = String());
55 static PassRefPtrWillBeRawPtr<CSSStyleSheet> createInline(PassRefPtrWillBeRawPtr<StyleSheetContents>, Node* ownerNode, const TextPosition& startPosition = TextPosition::minimumPosition());
56
57 virtual ~CSSStyleSheet();
58
59 virtual CSSStyleSheet* parentStyleSheet() const OVERRIDE;
ownerNode()60 virtual Node* ownerNode() const OVERRIDE { return m_ownerNode; }
61 virtual MediaList* media() const OVERRIDE;
62 virtual String href() const OVERRIDE;
title()63 virtual String title() const OVERRIDE { return m_title; }
disabled()64 virtual bool disabled() const OVERRIDE { return m_isDisabled; }
65 virtual void setDisabled(bool) OVERRIDE;
66
67 PassRefPtrWillBeRawPtr<CSSRuleList> cssRules();
68 unsigned insertRule(const String& rule, unsigned index, ExceptionState&);
69 unsigned insertRule(const String& rule, ExceptionState&); // Deprecated.
70 void deleteRule(unsigned index, ExceptionState&);
71
72 // IE Extensions
73 PassRefPtrWillBeRawPtr<CSSRuleList> rules();
74 int addRule(const String& selector, const String& style, int index, ExceptionState&);
75 int addRule(const String& selector, const String& style, ExceptionState&);
removeRule(unsigned index,ExceptionState & exceptionState)76 void removeRule(unsigned index, ExceptionState& exceptionState) { deleteRule(index, exceptionState); }
77
78 // For CSSRuleList.
79 unsigned length() const;
80 CSSRule* item(unsigned index);
81
82 virtual void clearOwnerNode() OVERRIDE;
83
ownerRule()84 virtual CSSRule* ownerRule() const OVERRIDE { return m_ownerRule; }
85 virtual KURL baseURL() const OVERRIDE;
86 virtual bool isLoading() const OVERRIDE;
87
clearOwnerRule()88 void clearOwnerRule() { m_ownerRule = nullptr; }
89 Document* ownerDocument() const;
mediaQueries()90 MediaQuerySet* mediaQueries() const { return m_mediaQueries.get(); }
91 void setMediaQueries(PassRefPtrWillBeRawPtr<MediaQuerySet>);
setTitle(const String & title)92 void setTitle(const String& title) { m_title = title; }
93
94 class RuleMutationScope {
95 WTF_MAKE_NONCOPYABLE(RuleMutationScope);
96 STACK_ALLOCATED();
97 public:
98 explicit RuleMutationScope(CSSStyleSheet*);
99 explicit RuleMutationScope(CSSRule*);
100 ~RuleMutationScope();
101
102 private:
103 RawPtrWillBeMember<CSSStyleSheet> m_styleSheet;
104 };
105
106 void willMutateRules();
107 void didMutateRules();
108 void didMutate(StyleSheetUpdateType = PartialRuleUpdate);
109
110 void clearChildRuleCSSOMWrappers();
111
contents()112 StyleSheetContents* contents() const { return m_contents.get(); }
113
isInline()114 bool isInline() const { return m_isInlineStylesheet; }
startPositionInSource()115 TextPosition startPositionInSource() const { return m_startPosition; }
116
117 bool sheetLoaded();
loadCompleted()118 bool loadCompleted() const { return m_loadCompleted; }
119 void startLoadingDynamicSheet();
120
121 virtual void trace(Visitor*) OVERRIDE;
122
123 private:
124 CSSStyleSheet(PassRefPtrWillBeRawPtr<StyleSheetContents>, CSSImportRule* ownerRule);
125 CSSStyleSheet(PassRefPtrWillBeRawPtr<StyleSheetContents>, Node* ownerNode, bool isInlineStylesheet, const TextPosition& startPosition);
126
isCSSStyleSheet()127 virtual bool isCSSStyleSheet() const OVERRIDE { return true; }
type()128 virtual String type() const OVERRIDE { return "text/css"; }
129
130 void reattachChildRuleCSSOMWrappers();
131
132 bool canAccessRules() const;
133
134 void setLoadCompleted(bool);
135
136 RefPtrWillBeMember<StyleSheetContents> m_contents;
137 bool m_isInlineStylesheet;
138 bool m_isDisabled;
139 String m_title;
140 RefPtrWillBeMember<MediaQuerySet> m_mediaQueries;
141
142 RawPtrWillBeMember<Node> m_ownerNode;
143 RawPtrWillBeMember<CSSRule> m_ownerRule;
144
145 TextPosition m_startPosition;
146 bool m_loadCompleted;
147 mutable RefPtrWillBeMember<MediaList> m_mediaCSSOMWrapper;
148 mutable WillBeHeapVector<RefPtrWillBeMember<CSSRule> > m_childRuleCSSOMWrappers;
149 mutable OwnPtrWillBeMember<CSSRuleList> m_ruleListCSSOMWrapper;
150 };
151
RuleMutationScope(CSSStyleSheet * sheet)152 inline CSSStyleSheet::RuleMutationScope::RuleMutationScope(CSSStyleSheet* sheet)
153 : m_styleSheet(sheet)
154 {
155 if (m_styleSheet)
156 m_styleSheet->willMutateRules();
157 }
158
RuleMutationScope(CSSRule * rule)159 inline CSSStyleSheet::RuleMutationScope::RuleMutationScope(CSSRule* rule)
160 : m_styleSheet(rule ? rule->parentStyleSheet() : 0)
161 {
162 if (m_styleSheet)
163 m_styleSheet->willMutateRules();
164 }
165
~RuleMutationScope()166 inline CSSStyleSheet::RuleMutationScope::~RuleMutationScope()
167 {
168 if (m_styleSheet)
169 m_styleSheet->didMutateRules();
170 }
171
172 DEFINE_TYPE_CASTS(CSSStyleSheet, StyleSheet, sheet, sheet->isCSSStyleSheet(), sheet.isCSSStyleSheet());
173
174 } // namespace
175
176 #endif
177