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| 1 /* | |
| 2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org) | |
| 3 * (C) 2000 Antti Koivisto (koivisto@kde.org) | |
| 4 * (C) 2000 Dirk Mueller (mueller@kde.org) | |
| 5 * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2010 Apple Inc. All rights reserv
ed. | |
| 6 * Copyright (C) 2006 Graham Dennis (graham.dennis@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/RenderStyleConstants.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 | |
| 45 virtual ~ContentData() { } | |
| 46 | |
| 47 virtual bool isImage() const { return false; } | |
| 48 virtual bool isText() const { return false; } | |
| 49 | |
| 50 virtual RenderObject* createRenderer(Document&, RenderStyle*) const = 0; | |
| 51 | |
| 52 virtual PassOwnPtr<ContentData> clone() const; | |
| 53 | |
| 54 ContentData* next() const { return m_next.get(); } | |
| 55 void setNext(PassOwnPtr<ContentData> next) { m_next = next; } | |
| 56 | |
| 57 virtual bool equals(const ContentData&) const = 0; | |
| 58 | |
| 59 private: | |
| 60 virtual PassOwnPtr<ContentData> cloneInternal() const = 0; | |
| 61 | |
| 62 OwnPtr<ContentData> m_next; | |
| 63 }; | |
| 64 | |
| 65 #define DEFINE_CONTENT_DATA_TYPE_CASTS(typeName) \ | |
| 66 DEFINE_TYPE_CASTS(typeName##ContentData, ContentData, content, content->is##
typeName(), content.is##typeName()) | |
| 67 | |
| 68 class ImageContentData final : public ContentData { | |
| 69 friend class ContentData; | |
| 70 public: | |
| 71 const StyleImage* image() const { return m_image.get(); } | |
| 72 StyleImage* image() { return m_image.get(); } | |
| 73 void setImage(PassRefPtr<StyleImage> image) { m_image = image; } | |
| 74 | |
| 75 virtual bool isImage() const override { return true; } | |
| 76 virtual RenderObject* createRenderer(Document&, RenderStyle*) const override
; | |
| 77 | |
| 78 virtual bool equals(const ContentData& data) const override | |
| 79 { | |
| 80 if (!data.isImage()) | |
| 81 return false; | |
| 82 return *static_cast<const ImageContentData&>(data).image() == *image(); | |
| 83 } | |
| 84 | |
| 85 private: | |
| 86 ImageContentData(PassRefPtr<StyleImage> image) | |
| 87 : m_image(image) | |
| 88 { | |
| 89 } | |
| 90 | |
| 91 virtual PassOwnPtr<ContentData> cloneInternal() const override | |
| 92 { | |
| 93 RefPtr<StyleImage> image = const_cast<StyleImage*>(this->image()); | |
| 94 return create(image.release()); | |
| 95 } | |
| 96 | |
| 97 RefPtr<StyleImage> m_image; | |
| 98 }; | |
| 99 | |
| 100 DEFINE_CONTENT_DATA_TYPE_CASTS(Image); | |
| 101 | |
| 102 class TextContentData final : public ContentData { | |
| 103 friend class ContentData; | |
| 104 public: | |
| 105 const String& text() const { return m_text; } | |
| 106 void setText(const String& text) { m_text = text; } | |
| 107 | |
| 108 virtual bool isText() const override { return true; } | |
| 109 virtual RenderObject* createRenderer(Document&, RenderStyle*) const override
; | |
| 110 | |
| 111 virtual bool equals(const ContentData& data) const override | |
| 112 { | |
| 113 if (!data.isText()) | |
| 114 return false; | |
| 115 return static_cast<const TextContentData&>(data).text() == text(); | |
| 116 } | |
| 117 | |
| 118 private: | |
| 119 TextContentData(const String& text) | |
| 120 : m_text(text) | |
| 121 { | |
| 122 } | |
| 123 | |
| 124 virtual PassOwnPtr<ContentData> cloneInternal() const override { return crea
te(text()); } | |
| 125 | |
| 126 String m_text; | |
| 127 }; | |
| 128 | |
| 129 DEFINE_CONTENT_DATA_TYPE_CASTS(Text); | |
| 130 | |
| 131 inline bool operator==(const ContentData& a, const ContentData& b) | |
| 132 { | |
| 133 return a.equals(b); | |
| 134 } | |
| 135 | |
| 136 inline bool operator!=(const ContentData& a, const ContentData& b) | |
| 137 { | |
| 138 return !(a == b); | |
| 139 } | |
| 140 | |
| 141 } // namespace blink | |
| 142 | |
| 143 #endif // ContentData_h | |
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