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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 "core/css/CSSImageValue.h"
#include "core/css/CSSMarkup.h"
#include "core/dom/Document.h"
#include "core/fetch/FetchInitiatorTypeNames.h"
#include "core/fetch/FetchRequest.h"
#include "core/fetch/ResourceFetcher.h"
#include "core/frame/Settings.h"
#include "core/loader/resource/ImageResourceContent.h"
#include "core/style/StyleFetchedImage.h"
#include "core/style/StyleInvalidImage.h"
#include "platform/CrossOriginAttributeValue.h"
#include "platform/weborigin/KURL.h"
#include "platform/weborigin/SecurityPolicy.h"
namespace blink {
CSSImageValue::CSSImageValue(const AtomicString& rawValue,
const KURL& url,
StyleImage* image)
: CSSValue(ImageClass),
m_relativeURL(rawValue),
m_absoluteURL(url.getString()),
m_cachedImage(image) {}
CSSImageValue::CSSImageValue(const AtomicString& absoluteURL)
: CSSValue(ImageClass),
m_relativeURL(absoluteURL),
m_absoluteURL(absoluteURL) {}
CSSImageValue::~CSSImageValue() {}
StyleImage* CSSImageValue::cacheImage(const Document& document,
CrossOriginAttributeValue crossOrigin) {
if (!m_cachedImage) {
FetchRequest request(ResourceRequest(m_absoluteURL),
m_initiatorName.isEmpty()
? FetchInitiatorTypeNames::css
: m_initiatorName);
request.mutableResourceRequest().setHTTPReferrer(
SecurityPolicy::generateReferrer(m_referrer.referrerPolicy,
request.url(), m_referrer.referrer));
if (crossOrigin != CrossOriginAttributeNotSet)
request.setCrossOriginAccessControl(document.getSecurityOrigin(),
crossOrigin);
if (document.settings() && document.settings()->getFetchImagePlaceholders())
request.setAllowImagePlaceholder();
if (ImageResourceContent* cachedImage =
ImageResourceContent::fetch(request, document.fetcher()))
m_cachedImage =
StyleFetchedImage::create(cachedImage, document, request.url());
else
m_cachedImage = StyleInvalidImage::create(url());
}
return m_cachedImage.get();
}
void CSSImageValue::restoreCachedResourceIfNeeded(
const Document& document) const {
if (!m_cachedImage || !document.fetcher() || m_absoluteURL.isNull())
return;
ImageResourceContent* resource = m_cachedImage->cachedImage();
if (!resource)
return;
resource->emulateLoadStartedForInspector(
document.fetcher(), KURL(ParsedURLString, m_absoluteURL),
m_initiatorName.isEmpty() ? FetchInitiatorTypeNames::css
: m_initiatorName);
}
bool CSSImageValue::hasFailedOrCanceledSubresources() const {
if (!m_cachedImage)
return false;
if (ImageResourceContent* cachedResource = m_cachedImage->cachedImage())
return cachedResource->loadFailedOrCanceled();
return true;
}
bool CSSImageValue::equals(const CSSImageValue& other) const {
if (m_absoluteURL.isEmpty() && other.m_absoluteURL.isEmpty())
return m_relativeURL == other.m_relativeURL;
return m_absoluteURL == other.m_absoluteURL;
}
String CSSImageValue::customCSSText() const {
return serializeURI(m_relativeURL);
}
bool CSSImageValue::knownToBeOpaque(const LayoutObject& layoutObject) const {
return m_cachedImage ? m_cachedImage->knownToBeOpaque(layoutObject) : false;
}
DEFINE_TRACE_AFTER_DISPATCH(CSSImageValue) {
visitor->trace(m_cachedImage);
CSSValue::traceAfterDispatch(visitor);
}
void CSSImageValue::reResolveURL(const Document& document) const {
KURL url = document.completeURL(m_relativeURL);
AtomicString urlString(url.getString());
if (urlString == m_absoluteURL)
return;
m_absoluteURL = urlString;
m_cachedImage.clear();
}
} // namespace blink
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