| /* |
| * Copyright (C) 2000 Lars Knoll (knoll@kde.org) |
| * (C) 2000 Antti Koivisto (koivisto@kde.org) |
| * (C) 2000 Dirk Mueller (mueller@kde.org) |
| * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2010 Apple Inc. All rights reserved. |
| * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com) |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #ifndef ContentData_h |
| #define ContentData_h |
| |
| #include "core/style/CounterContent.h" |
| #include "core/style/StyleImage.h" |
| #include "wtf/PtrUtil.h" |
| #include <memory> |
| |
| namespace blink { |
| |
| class Document; |
| class LayoutObject; |
| class ComputedStyle; |
| |
| class ContentData : public GarbageCollectedFinalized<ContentData> { |
| public: |
| static ContentData* create(StyleImage*); |
| static ContentData* create(const String&); |
| static ContentData* create(std::unique_ptr<CounterContent>); |
| static ContentData* create(QuoteType); |
| |
| virtual ~ContentData() { } |
| |
| virtual bool isCounter() const { return false; } |
| virtual bool isImage() const { return false; } |
| virtual bool isQuote() const { return false; } |
| virtual bool isText() const { return false; } |
| |
| virtual LayoutObject* createLayoutObject(Document&, ComputedStyle&) const = 0; |
| |
| virtual ContentData* clone() const; |
| |
| ContentData* next() const { return m_next.get(); } |
| void setNext(ContentData* next) { m_next = next; } |
| |
| virtual bool equals(const ContentData&) const = 0; |
| |
| DECLARE_VIRTUAL_TRACE(); |
| |
| private: |
| virtual ContentData* cloneInternal() const = 0; |
| |
| Member<ContentData> m_next; |
| }; |
| |
| #define DEFINE_CONTENT_DATA_TYPE_CASTS(typeName) \ |
| DEFINE_TYPE_CASTS(typeName##ContentData, ContentData, content, content->is##typeName(), content.is##typeName()) |
| |
| class ImageContentData final : public ContentData { |
| friend class ContentData; |
| public: |
| const StyleImage* image() const { return m_image.get(); } |
| StyleImage* image() { return m_image.get(); } |
| void setImage(StyleImage* image) { ASSERT(image); m_image = image; } |
| |
| bool isImage() const override { return true; } |
| LayoutObject* createLayoutObject(Document&, ComputedStyle&) const override; |
| |
| bool equals(const ContentData& data) const override |
| { |
| if (!data.isImage()) |
| return false; |
| return *static_cast<const ImageContentData&>(data).image() == *image(); |
| } |
| |
| DECLARE_VIRTUAL_TRACE(); |
| |
| private: |
| ImageContentData(StyleImage* image) |
| : m_image(image) |
| { |
| ASSERT(m_image); |
| } |
| |
| ContentData* cloneInternal() const override |
| { |
| StyleImage* image = const_cast<StyleImage*>(this->image()); |
| return create(image); |
| } |
| |
| Member<StyleImage> m_image; |
| }; |
| |
| DEFINE_CONTENT_DATA_TYPE_CASTS(Image); |
| |
| class TextContentData final : public ContentData { |
| friend class ContentData; |
| public: |
| const String& text() const { return m_text; } |
| void setText(const String& text) { m_text = text; } |
| |
| bool isText() const override { return true; } |
| LayoutObject* createLayoutObject(Document&, ComputedStyle&) const override; |
| |
| bool equals(const ContentData& data) const override |
| { |
| if (!data.isText()) |
| return false; |
| return static_cast<const TextContentData&>(data).text() == text(); |
| } |
| |
| private: |
| TextContentData(const String& text) |
| : m_text(text) |
| { |
| } |
| |
| ContentData* cloneInternal() const override { return create(text()); } |
| |
| String m_text; |
| }; |
| |
| DEFINE_CONTENT_DATA_TYPE_CASTS(Text); |
| |
| class CounterContentData final : public ContentData { |
| friend class ContentData; |
| public: |
| const CounterContent* counter() const { return m_counter.get(); } |
| void setCounter(std::unique_ptr<CounterContent> counter) { m_counter = std::move(counter); } |
| |
| bool isCounter() const override { return true; } |
| LayoutObject* createLayoutObject(Document&, ComputedStyle&) const override; |
| |
| private: |
| CounterContentData(std::unique_ptr<CounterContent> counter) |
| : m_counter(std::move(counter)) |
| { |
| } |
| |
| ContentData* cloneInternal() const override |
| { |
| std::unique_ptr<CounterContent> counterData = wrapUnique(new CounterContent(*counter())); |
| return create(std::move(counterData)); |
| } |
| |
| bool equals(const ContentData& data) const override |
| { |
| if (!data.isCounter()) |
| return false; |
| return *static_cast<const CounterContentData&>(data).counter() == *counter(); |
| } |
| |
| std::unique_ptr<CounterContent> m_counter; |
| }; |
| |
| DEFINE_CONTENT_DATA_TYPE_CASTS(Counter); |
| |
| class QuoteContentData final : public ContentData { |
| friend class ContentData; |
| public: |
| QuoteType quote() const { return m_quote; } |
| void setQuote(QuoteType quote) { m_quote = quote; } |
| |
| bool isQuote() const override { return true; } |
| LayoutObject* createLayoutObject(Document&, ComputedStyle&) const override; |
| |
| bool equals(const ContentData& data) const override |
| { |
| if (!data.isQuote()) |
| return false; |
| return static_cast<const QuoteContentData&>(data).quote() == quote(); |
| } |
| |
| private: |
| QuoteContentData(QuoteType quote) |
| : m_quote(quote) |
| { |
| } |
| |
| ContentData* cloneInternal() const override { return create(quote()); } |
| |
| QuoteType m_quote; |
| }; |
| |
| DEFINE_CONTENT_DATA_TYPE_CASTS(Quote); |
| |
| inline bool operator==(const ContentData& a, const ContentData& b) |
| { |
| return a.equals(b); |
| } |
| |
| inline bool operator!=(const ContentData& a, const ContentData& b) |
| { |
| return !(a == b); |
| } |
| |
| } // namespace blink |
| |
| #endif // ContentData_h |