1 | /* |
2 | * (C) 1999-2003 Lars Knoll (knoll@kde.org) |
3 | * (C) 2002-2003 Dirk Mueller (mueller@kde.org) |
4 | * Copyright (C) 2002, 2006, 2012 Apple Inc. |
5 | * |
6 | * This library is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU Library General Public |
8 | * License as published by the Free Software Foundation; either |
9 | * version 2 of the License, or (at your option) any later version. |
10 | * |
11 | * This library is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | * Library General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU Library General Public License |
17 | * along with this library; see the file COPYING.LIB. If not, write to |
18 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
19 | * Boston, MA 02110-1301, USA. |
20 | */ |
21 | |
22 | #pragma once |
23 | |
24 | #include <wtf/RefPtr.h> |
25 | #include <wtf/Vector.h> |
26 | |
27 | namespace WebCore { |
28 | |
29 | class CSSRule; |
30 | class CSSStyleSheet; |
31 | |
32 | class CSSRuleList { |
33 | WTF_MAKE_NONCOPYABLE(CSSRuleList); WTF_MAKE_FAST_ALLOCATED; |
34 | public: |
35 | virtual ~CSSRuleList(); |
36 | |
37 | virtual void ref() = 0; |
38 | virtual void deref() = 0; |
39 | |
40 | virtual unsigned length() const = 0; |
41 | virtual CSSRule* item(unsigned index) const = 0; |
42 | |
43 | virtual CSSStyleSheet* styleSheet() const = 0; |
44 | |
45 | protected: |
46 | CSSRuleList(); |
47 | }; |
48 | |
49 | class StaticCSSRuleList final : public CSSRuleList { |
50 | public: |
51 | static Ref<StaticCSSRuleList> create() { return adoptRef(*new StaticCSSRuleList); } |
52 | |
53 | void ref() final { ++m_refCount; } |
54 | void deref() final; |
55 | |
56 | Vector<RefPtr<CSSRule>>& rules() { return m_rules; } |
57 | |
58 | CSSStyleSheet* styleSheet() const final { return nullptr; } |
59 | |
60 | private: |
61 | StaticCSSRuleList(); |
62 | ~StaticCSSRuleList(); |
63 | |
64 | unsigned length() const final { return m_rules.size(); } |
65 | CSSRule* item(unsigned index) const final { return index < m_rules.size() ? m_rules[index].get() : nullptr; } |
66 | |
67 | Vector<RefPtr<CSSRule>> m_rules; |
68 | unsigned m_refCount; |
69 | }; |
70 | |
71 | // The rule owns the live list. |
72 | template <class Rule> |
73 | class LiveCSSRuleList final : public CSSRuleList { |
74 | public: |
75 | LiveCSSRuleList(Rule& rule) |
76 | : m_rule(rule) |
77 | { |
78 | } |
79 | |
80 | void ref() final { m_rule.ref(); } |
81 | void deref() final { m_rule.deref(); } |
82 | |
83 | private: |
84 | unsigned length() const final { return m_rule.length(); } |
85 | CSSRule* item(unsigned index) const final { return m_rule.item(index); } |
86 | CSSStyleSheet* styleSheet() const final { return m_rule.parentStyleSheet(); } |
87 | |
88 | Rule& m_rule; |
89 | }; |
90 | |
91 | } // namespace WebCore |
92 | |