#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 "CrossOriginAccessControl.h"
#include "Document.h"
#include "Element.h"
#include "MemoryCache.h"
#include "StyleCachedImage.h"
#include "StylePendingImage.h"
namespace WebCore {
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)
{
}
inline void CSSImageValue::detachPendingImage()
{
if (is<StylePendingImage>(m_image.get()))
downcast<StylePendingImage>(*m_image).detachFromCSSValue();
}
CSSImageValue::~CSSImageValue()
{
detachPendingImage();
}
StyleImage* CSSImageValue::cachedOrPendingImage()
{
if (!m_image)
m_image = StylePendingImage::create(this);
return m_image.get();
}
StyleCachedImage* CSSImageValue::cachedImage(CachedResourceLoader& loader, const ResourceLoaderOptions& options)
{
if (!m_accessedImage) {
m_accessedImage = true;
CachedResourceRequest request(ResourceRequest(loader.document()->completeURL(m_url)), options);
if (m_initiatorName.isEmpty())
request.setInitiator(cachedResourceRequestInitiators().css);
else
request.setInitiator(m_initiatorName);
if (options.requestOriginPolicy() == PotentiallyCrossOriginEnabled)
updateRequestForAccessControl(request.mutableResourceRequest(), loader.document()->securityOrigin(), options.allowCredentials());
if (CachedResourceHandle<CachedImage> cachedImage = loader.requestImage(request)) {
detachPendingImage();
m_image = StyleCachedImage::create(cachedImage.get());
}
}
return is<StyleCachedImage>(m_image.get()) ? downcast<StyleCachedImage>(m_image.get()) : nullptr;
}
bool CSSImageValue::traverseSubresources(const std::function<bool (const CachedResource&)>& handler) const
{
if (!is<StyleCachedImage>(m_image.get()))
return false;
CachedResource* cachedResource = downcast<StyleCachedImage>(*m_image).cachedImage();
ASSERT(cachedResource);
return handler(*cachedResource);
}
bool CSSImageValue::equals(const CSSImageValue& other) const
{
return m_url == other.m_url;
}
String CSSImageValue::customCSSText() const
{
return "url(" + quoteCSSURLIfNeeded(m_url) + ')';
}
PassRefPtr<CSSValue> CSSImageValue::cloneForCSSOM() const
{
RefPtr<CSSPrimitiveValue> uriValue = CSSPrimitiveValue::create(m_url, CSSPrimitiveValue::CSS_URI);
uriValue->setCSSOMSafe();
return uriValue.release();
}
bool CSSImageValue::knownToBeOpaque(const RenderElement* renderer) const
{
return m_image ? m_image->knownToBeOpaque(renderer) : false;
}
}