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