1 /* 2 * Copyright (C) 2000 Lars Knoll (knoll (at) kde.org) 3 * (C) 2000 Antti Koivisto (koivisto (at) kde.org) 4 * (C) 2000 Dirk Mueller (mueller (at) kde.org) 5 * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2010 Apple Inc. All rights reserved. 6 * Copyright (C) 2006 Graham Dennis (graham.dennis (at) gmail.com) 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Library General Public 10 * License as published by the Free Software Foundation; either 11 * version 2 of the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Library General Public License for more details. 17 * 18 * You should have received a copy of the GNU Library General Public License 19 * along with this library; see the file COPYING.LIB. If not, write to 20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 21 * Boston, MA 02110-1301, USA. 22 * 23 */ 24 25 #ifndef ContentData_h 26 #define ContentData_h 27 28 #include "core/rendering/style/CounterContent.h" 29 #include "core/rendering/style/StyleImage.h" 30 #include "wtf/OwnPtr.h" 31 #include "wtf/PassOwnPtr.h" 32 33 namespace WebCore { 34 35 class Document; 36 class RenderObject; 37 class RenderStyle; 38 39 class ContentData { 40 WTF_MAKE_FAST_ALLOCATED; 41 public: 42 static PassOwnPtr<ContentData> create(PassRefPtr<StyleImage>); 43 static PassOwnPtr<ContentData> create(const String&); 44 static PassOwnPtr<ContentData> create(PassOwnPtr<CounterContent>); 45 static PassOwnPtr<ContentData> create(QuoteType); 46 47 virtual ~ContentData() { } 48 49 virtual bool isCounter() const { return false; } 50 virtual bool isImage() const { return false; } 51 virtual bool isQuote() const { return false; } 52 virtual bool isText() const { return false; } 53 54 virtual RenderObject* createRenderer(Document*, RenderStyle*) const = 0; 55 56 virtual PassOwnPtr<ContentData> clone() const; 57 58 ContentData* next() const { return m_next.get(); } 59 void setNext(PassOwnPtr<ContentData> next) { m_next = next; } 60 61 virtual bool equals(const ContentData&) const = 0; 62 63 private: 64 virtual PassOwnPtr<ContentData> cloneInternal() const = 0; 65 66 OwnPtr<ContentData> m_next; 67 }; 68 69 class ImageContentData : public ContentData { 70 friend class ContentData; 71 public: 72 const StyleImage* image() const { return m_image.get(); } 73 StyleImage* image() { return m_image.get(); } 74 void setImage(PassRefPtr<StyleImage> image) { m_image = image; } 75 76 virtual bool isImage() const OVERRIDE { return true; } 77 virtual RenderObject* createRenderer(Document*, RenderStyle*) const OVERRIDE; 78 79 virtual bool equals(const ContentData& data) const OVERRIDE 80 { 81 if (!data.isImage()) 82 return false; 83 return *static_cast<const ImageContentData&>(data).image() == *image(); 84 } 85 86 private: 87 ImageContentData(PassRefPtr<StyleImage> image) 88 : m_image(image) 89 { 90 } 91 92 virtual PassOwnPtr<ContentData> cloneInternal() const 93 { 94 RefPtr<StyleImage> image = const_cast<StyleImage*>(this->image()); 95 return create(image.release()); 96 } 97 98 RefPtr<StyleImage> m_image; 99 }; 100 101 class TextContentData : public ContentData { 102 friend class ContentData; 103 public: 104 const String& text() const { return m_text; } 105 void setText(const String& text) { m_text = text; } 106 107 virtual bool isText() const OVERRIDE { return true; } 108 virtual RenderObject* createRenderer(Document*, RenderStyle*) const OVERRIDE; 109 110 virtual bool equals(const ContentData& data) const OVERRIDE 111 { 112 if (!data.isText()) 113 return false; 114 return static_cast<const TextContentData&>(data).text() == text(); 115 } 116 117 private: 118 TextContentData(const String& text) 119 : m_text(text) 120 { 121 } 122 123 virtual PassOwnPtr<ContentData> cloneInternal() const { return create(text()); } 124 125 String m_text; 126 }; 127 128 class CounterContentData : public ContentData { 129 friend class ContentData; 130 public: 131 const CounterContent* counter() const { return m_counter.get(); } 132 void setCounter(PassOwnPtr<CounterContent> counter) { m_counter = counter; } 133 134 virtual bool isCounter() const OVERRIDE { return true; } 135 virtual RenderObject* createRenderer(Document*, RenderStyle*) const OVERRIDE; 136 137 private: 138 CounterContentData(PassOwnPtr<CounterContent> counter) 139 : m_counter(counter) 140 { 141 } 142 143 virtual PassOwnPtr<ContentData> cloneInternal() const 144 { 145 OwnPtr<CounterContent> counterData = adoptPtr(new CounterContent(*counter())); 146 return create(counterData.release()); 147 } 148 149 virtual bool equals(const ContentData& data) const OVERRIDE 150 { 151 if (!data.isCounter()) 152 return false; 153 return *static_cast<const CounterContentData&>(data).counter() == *counter(); 154 } 155 156 OwnPtr<CounterContent> m_counter; 157 }; 158 159 class QuoteContentData : public ContentData { 160 friend class ContentData; 161 public: 162 QuoteType quote() const { return m_quote; } 163 void setQuote(QuoteType quote) { m_quote = quote; } 164 165 virtual bool isQuote() const OVERRIDE { return true; } 166 virtual RenderObject* createRenderer(Document*, RenderStyle*) const OVERRIDE; 167 168 virtual bool equals(const ContentData& data) const OVERRIDE 169 { 170 if (!data.isQuote()) 171 return false; 172 return static_cast<const QuoteContentData&>(data).quote() == quote(); 173 } 174 175 private: 176 QuoteContentData(QuoteType quote) 177 : m_quote(quote) 178 { 179 } 180 181 virtual PassOwnPtr<ContentData> cloneInternal() const { return create(quote()); } 182 183 QuoteType m_quote; 184 }; 185 186 inline bool operator==(const ContentData& a, const ContentData& b) 187 { 188 return a.equals(b); 189 } 190 191 inline bool operator!=(const ContentData& a, const ContentData& b) 192 { 193 return !(a == b); 194 } 195 196 } // namespace WebCore 197 198 #endif // ContentData_h 199
