#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;
}
}