Source/WebCore/rendering/style/ContentData.cpp

/*
 * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
 *
 * 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.
 *
 */

#include "config.h"
#include "ContentData.h"

#include "StyleImage.h"

namespace WebCore {

PassOwnPtr<ContentData> ContentData::create(PassRefPtr<StyleImage> image)
{
    return adoptPtr(new ImageContentData(image));
}

PassOwnPtr<ContentData> ContentData::create(const String& text)
{
    return adoptPtr(new TextContentData(text));
}

PassOwnPtr<ContentData> ContentData::create(PassOwnPtr<CounterContent> counter)
{
    return adoptPtr(new CounterContentData(counter));
}

PassOwnPtr<ContentData> ContentData::create(QuoteType quote)
{
    return adoptPtr(new QuoteContentData(quote));
}

PassOwnPtr<ContentData> ContentData::clone() const
{
    OwnPtr<ContentData> result = cloneInternal();
    
    ContentData* lastNewData = result.get();
    for (const ContentData* contentData = next(); contentData; contentData = contentData->next()) {
        OwnPtr<ContentData> newData = contentData->cloneInternal();
        lastNewData->setNext(newData.release());
        lastNewData = lastNewData->next();
    }
        
    return result.release();
}

bool operator==(const ContentData& a, const ContentData& b)
{
    if (a.type() != b.type())
        return false;

    switch (a.type()) {
    case CONTENT_NONE:
        return true;
    case CONTENT_OBJECT:
        return *static_cast<const ImageContentData*>(&a)->image() == *static_cast<const ImageContentData*>(&b)->image();
    case CONTENT_TEXT:
        return static_cast<const TextContentData*>(&a)->text() == static_cast<const TextContentData*>(&b)->text();
    case CONTENT_COUNTER:
        return *static_cast<const CounterContentData*>(&a)->counter() == *static_cast<const CounterContentData*>(&b)->counter();
    case CONTENT_QUOTE:
        return static_cast<const QuoteContentData*>(&a)->quote() == static_cast<const QuoteContentData*>(&b)->quote();
    }
    ASSERT_NOT_REACHED();
    return false;
}

bool operator!=(const ContentData& a, const ContentData& b)
{
    return !(a == b);
}

} // namespace WebCore