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