blob: 25ddda1be6c388710505d06f53688a83f25bd03b [file] [log] [blame]
/*
* Copyright (C) 2000 Lars Knoll (knoll@kde.org)
* (C) 2000 Antti Koivisto (koivisto@kde.org)
* (C) 2000 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2003-2017 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.
*
*/
#pragma once
#include "CounterContent.h"
#include "StyleImage.h"
#include "RenderPtr.h"
#include <wtf/TypeCasts.h>
namespace WebCore {
class Document;
class RenderObject;
class RenderStyle;
class ContentData {
WTF_MAKE_FAST_ALLOCATED;
public:
enum Type {
CounterDataType,
ImageDataType,
QuoteDataType,
TextDataType
};
virtual ~ContentData() = default;
Type type() const { return m_type; }
bool isCounter() const { return type() == CounterDataType; }
bool isImage() const { return type() == ImageDataType; }
bool isQuote() const { return type() == QuoteDataType; }
bool isText() const { return type() == TextDataType; }
virtual RenderPtr<RenderObject> createContentRenderer(Document&, const RenderStyle&) const = 0;
std::unique_ptr<ContentData> clone() const;
ContentData* next() const { return m_next.get(); }
void setNext(std::unique_ptr<ContentData> next) { m_next = WTFMove(next); }
void setAltText(const String& alt) { m_altText = alt; }
const String& altText() const { return m_altText; }
protected:
explicit ContentData(Type type)
: m_type(type)
{
}
private:
virtual std::unique_ptr<ContentData> cloneInternal() const = 0;
std::unique_ptr<ContentData> m_next;
String m_altText;
Type m_type;
};
class ImageContentData final : public ContentData {
public:
explicit ImageContentData(Ref<StyleImage>&& image)
: ContentData(ImageDataType)
, m_image(WTFMove(image))
{
}
const StyleImage& image() const { return m_image.get(); }
void setImage(Ref<StyleImage>&& image)
{
m_image = WTFMove(image);
}
private:
RenderPtr<RenderObject> createContentRenderer(Document&, const RenderStyle&) const final;
std::unique_ptr<ContentData> cloneInternal() const final
{
auto image = std::make_unique<ImageContentData>(m_image.copyRef());
image->setAltText(altText());
return WTFMove(image);
}
Ref<StyleImage> m_image;
};
inline bool operator==(const ImageContentData& a, const ImageContentData& b)
{
return &a.image() == &b.image();
}
inline bool operator!=(const ImageContentData& a, const ImageContentData& b)
{
return !(a == b);
}
class TextContentData final : public ContentData {
public:
explicit TextContentData(const String& text)
: ContentData(TextDataType)
, m_text(text)
{
}
const String& text() const { return m_text; }
void setText(const String& text) { m_text = text; }
private:
RenderPtr<RenderObject> createContentRenderer(Document&, const RenderStyle&) const final;
std::unique_ptr<ContentData> cloneInternal() const final { return std::make_unique<TextContentData>(m_text); }
String m_text;
};
inline bool operator==(const TextContentData& a, const TextContentData& b)
{
return a.text() == b.text();
}
inline bool operator!=(const TextContentData& a, const TextContentData& b)
{
return !(a == b);
}
class CounterContentData final : public ContentData {
public:
explicit CounterContentData(std::unique_ptr<CounterContent> counter)
: ContentData(CounterDataType)
, m_counter(WTFMove(counter))
{
ASSERT(m_counter);
}
const CounterContent& counter() const { return *m_counter; }
void setCounter(std::unique_ptr<CounterContent> counter)
{
ASSERT(counter);
m_counter = WTFMove(counter);
}
private:
RenderPtr<RenderObject> createContentRenderer(Document&, const RenderStyle&) const final;
std::unique_ptr<ContentData> cloneInternal() const final
{
return std::make_unique<CounterContentData>(std::make_unique<CounterContent>(counter()));
}
std::unique_ptr<CounterContent> m_counter;
};
inline bool operator==(const CounterContentData& a, const CounterContentData& b)
{
return a.counter() == b.counter();
}
inline bool operator!=(const CounterContentData& a, const CounterContentData& b)
{
return !(a == b);
}
class QuoteContentData final : public ContentData {
public:
explicit QuoteContentData(QuoteType quote)
: ContentData(QuoteDataType)
, m_quote(quote)
{
}
QuoteType quote() const { return m_quote; }
void setQuote(QuoteType quote) { m_quote = quote; }
private:
RenderPtr<RenderObject> createContentRenderer(Document&, const RenderStyle&) const final;
std::unique_ptr<ContentData> cloneInternal() const final { return std::make_unique<QuoteContentData>(quote()); }
QuoteType m_quote;
};
inline bool operator==(const QuoteContentData& a, const QuoteContentData& b)
{
return a.quote() == b.quote();
}
inline bool operator!=(const QuoteContentData& a, const QuoteContentData& b)
{
return !(a == b);
}
inline bool operator==(const ContentData& a, const ContentData& b)
{
if (a.type() != b.type())
return false;
switch (a.type()) {
case ContentData::CounterDataType:
return downcast<CounterContentData>(a) == downcast<CounterContentData>(b);
case ContentData::ImageDataType:
return downcast<ImageContentData>(a) == downcast<ImageContentData>(b);
case ContentData::QuoteDataType:
return downcast<QuoteContentData>(a) == downcast<QuoteContentData>(b);
case ContentData::TextDataType:
return downcast<TextContentData>(a) == downcast<TextContentData>(b);
}
ASSERT_NOT_REACHED();
return false;
}
inline bool operator!=(const ContentData& a, const ContentData& b)
{
return !(a == b);
}
} // namespace WebCore
#define SPECIALIZE_TYPE_TRAITS_CONTENT_DATA(ToClassName, ContentDataName) \
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ToClassName) \
static bool isType(const WebCore::ContentData& contentData) { return contentData.is##ContentDataName(); } \
SPECIALIZE_TYPE_TRAITS_END()
SPECIALIZE_TYPE_TRAITS_CONTENT_DATA(ImageContentData, Image)
SPECIALIZE_TYPE_TRAITS_CONTENT_DATA(TextContentData, Text)
SPECIALIZE_TYPE_TRAITS_CONTENT_DATA(CounterContentData, Counter)
SPECIALIZE_TYPE_TRAITS_CONTENT_DATA(QuoteContentData, Quote)