1/* 2 * (C) 1999-2003 Lars Knoll (knoll@kde.org) 3 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 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 CSSValueList_h 22#define CSSValueList_h 23 24#include "CSSValue.h" 25#include <wtf/PassRefPtr.h> 26#include <wtf/Vector.h> 27 28namespace WebCore { 29 30class CSSParserValueList; 31 32class CSSValueList : public CSSValue { 33public: 34 static PassRef<CSSValueList> createCommaSeparated() 35 { 36 return adoptRef(*new CSSValueList(CommaSeparator)); 37 } 38 static PassRef<CSSValueList> createSpaceSeparated() 39 { 40 return adoptRef(*new CSSValueList(SpaceSeparator)); 41 } 42 static PassRef<CSSValueList> createSlashSeparated() 43 { 44 return adoptRef(*new CSSValueList(SlashSeparator)); 45 } 46 static PassRef<CSSValueList> createFromParserValueList(CSSParserValueList& list) 47 { 48 return adoptRef(*new CSSValueList(list)); 49 } 50 51 size_t length() const { return m_values.size(); } 52 CSSValue* item(size_t index) { return index < m_values.size() ? m_values[index].get() : 0; } 53 const CSSValue* item(size_t index) const { return index < m_values.size() ? m_values[index].get() : 0; } 54 CSSValue* itemWithoutBoundsCheck(size_t index) { return m_values[index].get(); } 55 const CSSValue* itemWithoutBoundsCheck(size_t index) const { ASSERT(index < m_values.size()); return m_values[index].get(); } 56 57 void append(PassRefPtr<CSSValue>); 58 void prepend(PassRefPtr<CSSValue>); 59 bool removeAll(CSSValue*); 60 bool hasValue(CSSValue*) const; 61 PassRefPtr<CSSValueList> copy(); 62 63 String customCSSText() const; 64 bool equals(const CSSValueList&) const; 65 bool equals(const CSSValue&) const; 66 67 void addSubresourceStyleURLs(ListHashSet<URL>&, const StyleSheetContents*) const; 68 69 bool hasFailedOrCanceledSubresources() const; 70 71 PassRefPtr<CSSValueList> cloneForCSSOM() const; 72 73protected: 74 CSSValueList(ClassType, ValueListSeparator); 75 CSSValueList(const CSSValueList& cloneFrom); 76 77private: 78 explicit CSSValueList(ValueListSeparator); 79 explicit CSSValueList(CSSParserValueList&); 80 81 Vector<RefPtr<CSSValue>, 4> m_values; 82}; 83 84CSS_VALUE_TYPE_CASTS(CSSValueList, isValueList()) 85 86inline void CSSValueList::append(PassRefPtr<CSSValue> value) 87{ 88 ASSERT(value); 89 m_values.append(value); 90} 91 92inline void CSSValueList::prepend(PassRefPtr<CSSValue> value) 93{ 94 ASSERT(value); 95 m_values.insert(0, value); 96} 97 98// Objects of this class are intended to be stack-allocated and scoped to a single function. 99// Please take care not to pass these around as they do hold onto a raw pointer. 100class CSSValueListInspector { 101public: 102 CSSValueListInspector(CSSValue* value) : m_list((value && value->isValueList()) ? toCSSValueList(value) : 0) { } 103 CSSValue* item(size_t index) const { ASSERT_WITH_SECURITY_IMPLICATION(index < length()); return m_list->itemWithoutBoundsCheck(index); } 104 CSSValue* first() const { return item(0); } 105 CSSValue* second() const { return item(1); } 106 size_t length() const { return m_list ? m_list->length() : 0; } 107private: 108 CSSValueList* m_list; 109}; 110 111// Wrapper that can be used to iterate over any CSSValue. Non-list values and 0 behave as zero-length lists. 112// Objects of this class are intended to be stack-allocated and scoped to a single function. 113// Please take care not to pass these around as they do hold onto a raw pointer. 114class CSSValueListIterator { 115public: 116 CSSValueListIterator(CSSValue* value) : m_inspector(value), m_position(0) { } 117 bool hasMore() const { return m_position < m_inspector.length(); } 118 CSSValue* value() const { return m_inspector.item(m_position); } 119 bool isPrimitiveValue() const { return value()->isPrimitiveValue(); } 120 void advance() { m_position++; ASSERT(m_position <= m_inspector.length());} 121 size_t index() const { return m_position; } 122private: 123 CSSValueListInspector m_inspector; 124 size_t m_position; 125}; 126} // namespace WebCore 127 128#endif // CSSValueList_h 129