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/*
* (C) 1999-2003 Lars Knoll (knoll@kde.org)
* Copyright (C) 2004, 2005, 2006, 2008 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 "CSSImageValue.h"
#include "CSSValueKeywords.h"
#include "MemoryCache.h"
#include "CachedImage.h"
#include "CachedResourceLoader.h"
#include "StyleCachedImage.h"
#include "StylePendingImage.h"
namespace WebCore {
CSSImageValue::CSSImageValue(const String& url)
: CSSPrimitiveValue(url, CSS_URI)
, m_accessedImage(false)
{
}
CSSImageValue::CSSImageValue()
: CSSPrimitiveValue(CSSValueNone)
, m_accessedImage(true)
{
}
CSSImageValue::~CSSImageValue()
{
if (m_image && m_image->isCachedImage())
static_cast<StyleCachedImage*>(m_image.get())->cachedImage()->removeClient(this);
}
StyleImage* CSSImageValue::cachedOrPendingImage()
{
if (getIdent() == CSSValueNone)
return 0;
if (!m_image)
m_image = StylePendingImage::create(this);
return m_image.get();
}
StyleCachedImage* CSSImageValue::cachedImage(CachedResourceLoader* loader)
{
return cachedImage(loader, getStringValue());
}
StyleCachedImage* CSSImageValue::cachedImage(CachedResourceLoader* loader, const String& url)
{
ASSERT(loader);
if (!m_accessedImage) {
m_accessedImage = true;
if (CachedImage* cachedImage = loader->requestImage(url)) {
cachedImage->addClient(this);
m_image = StyleCachedImage::create(cachedImage);
}
}
return (m_image && m_image->isCachedImage()) ? static_cast<StyleCachedImage*>(m_image.get()) : 0;
}
String CSSImageValue::cachedImageURL()
{
if (!m_image || !m_image->isCachedImage())
return String();
return static_cast<StyleCachedImage*>(m_image.get())->cachedImage()->url();
}
void CSSImageValue::clearCachedImage()
{
if (m_image && m_image->isCachedImage())
static_cast<StyleCachedImage*>(m_image.get())->cachedImage()->removeClient(this);
m_image = 0;
m_accessedImage = false;
}
} // namespace WebCore
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