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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 "CSSCursorImageValue.h"
#include "CSSParser.h"
#include "CSSValueKeywords.h"
#include "CachedImage.h"
#include "CachedResourceLoader.h"
#include "CachedResourceRequest.h"
#include "CachedResourceRequestInitiators.h"
#include "Document.h"
#include "Element.h"
#include "MemoryCache.h"
#include "StyleCachedImage.h"
#include "StylePendingImage.h"
#include "WebCoreMemoryInstrumentation.h"
namespace WebCore {
CSSImageValue::CSSImageValue(ClassType classType, const String& url)
: CSSValue(classType)
, m_url(url)
, m_accessedImage(false)
{
}
CSSImageValue::CSSImageValue(const String& url)
: CSSValue(ImageClass)
, m_url(url)
, m_accessedImage(false)
{
}
CSSImageValue::CSSImageValue(const String& url, StyleImage* image)
: CSSValue(ImageClass)
, m_url(url)
, m_image(image)
, m_accessedImage(true)
{
}
CSSImageValue::~CSSImageValue()
{
}
StyleImage* CSSImageValue::cachedOrPendingImage()
{
if (!m_image)
m_image = StylePendingImage::create(this);
return m_image.get();
}
StyleCachedImage* CSSImageValue::cachedImage(CachedResourceLoader* loader, Element* initiatorElement)
{
if (isCursorImageValue())
return static_cast<CSSCursorImageValue*>(this)->cachedImage(loader);
return cachedImage(loader, m_url, initiatorElement);
}
StyleCachedImage* CSSImageValue::cachedImage(CachedResourceLoader* loader, const String& url, Element* initiatorElement)
{
ASSERT(loader);
if (!m_accessedImage) {
m_accessedImage = true;
CachedResourceRequest request(ResourceRequest(loader->document()->completeURL(url)));
if (initiatorElement)
request.setInitiator(initiatorElement);
else
request.setInitiator(cachedResourceRequestInitiators().css);
if (CachedResourceHandle<CachedImage> cachedImage = loader->requestImage(request))
m_image = StyleCachedImage::create(cachedImage.get());
}
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()
{
m_image = 0;
m_accessedImage = false;
}
bool CSSImageValue::hasFailedOrCanceledSubresources() const
{
if (!m_image || !m_image->isCachedImage())
return false;
CachedResource* cachedResource = static_cast<StyleCachedImage*>(m_image.get())->cachedImage();
if (!cachedResource)
return true;
return cachedResource->loadFailedOrCanceled();
}
String CSSImageValue::customCssText() const
{
return "url(" + quoteCSSURLIfNeeded(m_url) + ")";
}
PassRefPtr<CSSValue> CSSImageValue::cloneForCSSOM() const
{
// NOTE: We expose CSSImageValues as URI primitive values in CSSOM to maintain old behavior.
RefPtr<CSSPrimitiveValue> uriValue = CSSPrimitiveValue::create(m_url, CSSPrimitiveValue::CSS_URI);
uriValue->setCSSOMSafe();
return uriValue.release();
}
void CSSImageValue::reportDescendantMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
{
MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
info.addMember(m_url);
// No need to report m_image as it is counted as part of RenderArena.
}
bool CSSImageValue::hasAlpha(const RenderObject* renderer) const
{
return m_image ? m_image->hasAlpha(renderer) : true;
}
} // namespace WebCore
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