1 /* 2 * (C) 1999-2003 Lars Knoll (knoll (at) kde.org) 3 * (C) 2002-2003 Dirk Mueller (mueller (at) kde.org) 4 * Copyright (C) 2002, 2006, 2012 Apple Computer, 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 #ifndef CSSRuleList_h 23 #define CSSRuleList_h 24 25 #include "wtf/PassRefPtr.h" 26 #include "wtf/RefPtr.h" 27 #include "wtf/Vector.h" 28 29 namespace WebCore { 30 31 class CSSRule; 32 class CSSStyleSheet; 33 34 class CSSRuleList { 35 WTF_MAKE_NONCOPYABLE(CSSRuleList); WTF_MAKE_FAST_ALLOCATED; 36 public: 37 virtual ~CSSRuleList(); 38 39 virtual void ref() = 0; 40 virtual void deref() = 0; 41 42 virtual unsigned length() const = 0; 43 virtual CSSRule* item(unsigned index) const = 0; 44 45 virtual CSSStyleSheet* styleSheet() const = 0; 46 47 protected: 48 CSSRuleList(); 49 }; 50 51 class StaticCSSRuleList : public CSSRuleList { 52 public: 53 static PassRefPtr<StaticCSSRuleList> create() { return adoptRef(new StaticCSSRuleList()); } 54 55 virtual void ref() { ++m_refCount; } 56 virtual void deref(); 57 58 Vector<RefPtr<CSSRule> >& rules() { return m_rules; } 59 60 virtual CSSStyleSheet* styleSheet() const { return 0; } 61 62 private: 63 StaticCSSRuleList(); 64 ~StaticCSSRuleList(); 65 66 virtual unsigned length() const { return m_rules.size(); } 67 virtual CSSRule* item(unsigned index) const { return index < m_rules.size() ? m_rules[index].get() : 0; } 68 69 Vector<RefPtr<CSSRule> > m_rules; 70 unsigned m_refCount; 71 }; 72 73 // The rule owns the live list. 74 template <class Rule> 75 class LiveCSSRuleList : public CSSRuleList { 76 public: 77 LiveCSSRuleList(Rule* rule) : m_rule(rule) { } 78 79 virtual void ref() { m_rule->ref(); } 80 virtual void deref() { m_rule->deref(); } 81 82 private: 83 virtual unsigned length() const { return m_rule->length(); } 84 virtual CSSRule* item(unsigned index) const { return m_rule->item(index); } 85 virtual CSSStyleSheet* styleSheet() const { return m_rule->parentStyleSheet(); } 86 87 Rule* m_rule; 88 }; 89 90 } // namespace WebCore 91 92 #endif // CSSRuleList_h 93
