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 blink { 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 #define DEFINE_CONTENT_DATA_TYPE_CASTS(typeName) \ 70 DEFINE_TYPE_CASTS(typeName##ContentData, ContentData, content, content->is##typeName(), content.is##typeName()) 71 72 class ImageContentData FINAL : public ContentData { 73 friend class ContentData; 74 public: 75 const StyleImage* image() const { return m_image.get(); } 76 StyleImage* image() { return m_image.get(); } 77 void setImage(PassRefPtr<StyleImage> image) { m_image = image; } 78 79 virtual bool isImage() const OVERRIDE { return true; } 80 virtual RenderObject* createRenderer(Document&, RenderStyle*) const OVERRIDE; 81 82 virtual bool equals(const ContentData& data) const OVERRIDE 83 { 84 if (!data.isImage()) 85 return false; 86 return *static_cast<const ImageContentData&>(data).image() == *image(); 87 } 88 89 private: 90 ImageContentData(PassRefPtr<StyleImage> image) 91 : m_image(image) 92 { 93 } 94 95 virtual PassOwnPtr<ContentData> cloneInternal() const OVERRIDE 96 { 97 RefPtr<StyleImage> image = const_cast<StyleImage*>(this->image()); 98 return create(image.release()); 99 } 100 101 RefPtr<StyleImage> m_image; 102 }; 103 104 DEFINE_CONTENT_DATA_TYPE_CASTS(Image); 105 106 class TextContentData FINAL : public ContentData { 107 friend class ContentData; 108 public: 109 const String& text() const { return m_text; } 110 void setText(const String& text) { m_text = text; } 111 112 virtual bool isText() const OVERRIDE { return true; } 113 virtual RenderObject* createRenderer(Document&, RenderStyle*) const OVERRIDE; 114 115 virtual bool equals(const ContentData& data) const OVERRIDE 116 { 117 if (!data.isText()) 118 return false; 119 return static_cast<const TextContentData&>(data).text() == text(); 120 } 121 122 private: 123 TextContentData(const String& text) 124 : m_text(text) 125 { 126 } 127 128 virtual PassOwnPtr<ContentData> cloneInternal() const OVERRIDE { return create(text()); } 129 130 String m_text; 131 }; 132 133 DEFINE_CONTENT_DATA_TYPE_CASTS(Text); 134 135 class CounterContentData FINAL : public ContentData { 136 friend class ContentData; 137 public: 138 const CounterContent* counter() const { return m_counter.get(); } 139 void setCounter(PassOwnPtr<CounterContent> counter) { m_counter = counter; } 140 141 virtual bool isCounter() const OVERRIDE { return true; } 142 virtual RenderObject* createRenderer(Document&, RenderStyle*) const OVERRIDE; 143 144 private: 145 CounterContentData(PassOwnPtr<CounterContent> counter) 146 : m_counter(counter) 147 { 148 } 149 150 virtual PassOwnPtr<ContentData> cloneInternal() const OVERRIDE 151 { 152 OwnPtr<CounterContent> counterData = adoptPtr(new CounterContent(*counter())); 153 return create(counterData.release()); 154 } 155 156 virtual bool equals(const ContentData& data) const OVERRIDE 157 { 158 if (!data.isCounter()) 159 return false; 160 return *static_cast<const CounterContentData&>(data).counter() == *counter(); 161 } 162 163 OwnPtr<CounterContent> m_counter; 164 }; 165 166 DEFINE_CONTENT_DATA_TYPE_CASTS(Counter); 167 168 class QuoteContentData FINAL : public ContentData { 169 friend class ContentData; 170 public: 171 QuoteType quote() const { return m_quote; } 172 void setQuote(QuoteType quote) { m_quote = quote; } 173 174 virtual bool isQuote() const OVERRIDE { return true; } 175 virtual RenderObject* createRenderer(Document&, RenderStyle*) const OVERRIDE; 176 177 virtual bool equals(const ContentData& data) const OVERRIDE 178 { 179 if (!data.isQuote()) 180 return false; 181 return static_cast<const QuoteContentData&>(data).quote() == quote(); 182 } 183 184 private: 185 QuoteContentData(QuoteType quote) 186 : m_quote(quote) 187 { 188 } 189 190 virtual PassOwnPtr<ContentData> cloneInternal() const OVERRIDE { return create(quote()); } 191 192 QuoteType m_quote; 193 }; 194 195 DEFINE_CONTENT_DATA_TYPE_CASTS(Quote); 196 197 inline bool operator==(const ContentData& a, const ContentData& b) 198 { 199 return a.equals(b); 200 } 201 202 inline bool operator!=(const ContentData& a, const ContentData& b) 203 { 204 return !(a == b); 205 } 206 207 } // namespace blink 208 209 #endif // ContentData_h 210
