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/*
* 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 "CounterContent.h"
#include "StyleImage.h"
#include <wtf/OwnPtr.h>
#include <wtf/PassOwnPtr.h>
namespace WebCore {
class Document;
class RenderObject;
class RenderStyle;
class ContentData {
WTF_MAKE_FAST_ALLOCATED;
public:
static PassOwnPtr<ContentData> create(PassRefPtr<StyleImage>);
static PassOwnPtr<ContentData> create(const String&);
static PassOwnPtr<ContentData> create(PassOwnPtr<CounterContent>);
static PassOwnPtr<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 RenderObject* createRenderer(Document*, RenderStyle*) const = 0;
virtual PassOwnPtr<ContentData> clone() const;
ContentData* next() const { return m_next.get(); }
void setNext(PassOwnPtr<ContentData> next) { m_next = next; }
virtual bool equals(const ContentData&) const = 0;
private:
virtual PassOwnPtr<ContentData> cloneInternal() const = 0;
OwnPtr<ContentData> m_next;
};
class ImageContentData : public ContentData {
friend class ContentData;
public:
const StyleImage* image() const { return m_image.get(); }
StyleImage* image() { return m_image.get(); }
void setImage(PassRefPtr<StyleImage> image) { m_image = image; }
virtual bool isImage() const OVERRIDE { return true; }
virtual RenderObject* createRenderer(Document*, RenderStyle*) const OVERRIDE;
virtual bool equals(const ContentData& data) const OVERRIDE
{
if (!data.isImage())
return false;
return *static_cast<const ImageContentData&>(data).image() == *image();
}
private:
ImageContentData(PassRefPtr<StyleImage> image)
: m_image(image)
{
}
virtual PassOwnPtr<ContentData> cloneInternal() const
{
RefPtr<StyleImage> image = const_cast<StyleImage*>(this->image());
return create(image.release());
}
RefPtr<StyleImage> m_image;
};
class TextContentData : public ContentData {
friend class ContentData;
public:
const String& text() const { return m_text; }
void setText(const String& text) { m_text = text; }
virtual bool isText() const OVERRIDE { return true; }
virtual RenderObject* createRenderer(Document*, RenderStyle*) const OVERRIDE;
virtual 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)
{
}
virtual PassOwnPtr<ContentData> cloneInternal() const { return create(text()); }
String m_text;
};
class CounterContentData : public ContentData {
friend class ContentData;
public:
const CounterContent* counter() const { return m_counter.get(); }
void setCounter(PassOwnPtr<CounterContent> counter) { m_counter = counter; }
virtual bool isCounter() const OVERRIDE { return true; }
virtual RenderObject* createRenderer(Document*, RenderStyle*) const OVERRIDE;
private:
CounterContentData(PassOwnPtr<CounterContent> counter)
: m_counter(counter)
{
}
virtual PassOwnPtr<ContentData> cloneInternal() const
{
OwnPtr<CounterContent> counterData = adoptPtr(new CounterContent(*counter()));
return create(counterData.release());
}
virtual bool equals(const ContentData& data) const OVERRIDE
{
if (!data.isCounter())
return false;
return *static_cast<const CounterContentData&>(data).counter() == *counter();
}
OwnPtr<CounterContent> m_counter;
};
class QuoteContentData : public ContentData {
friend class ContentData;
public:
QuoteType quote() const { return m_quote; }
void setQuote(QuoteType quote) { m_quote = quote; }
virtual bool isQuote() const OVERRIDE { return true; }
virtual RenderObject* createRenderer(Document*, RenderStyle*) const OVERRIDE;
virtual 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)
{
}
virtual PassOwnPtr<ContentData> cloneInternal() const { return create(quote()); }
QuoteType m_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 WebCore
#endif // ContentData_h
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