void PageSerializer::retrieveResourcesForCSSDeclaration(CSSStyleDeclaration* styleDeclaration)
{
if (!styleDeclaration)
return;
if (!styleDeclaration->stylesheet()->isCSSStyleSheet())
return;
CSSStyleSheet* cssStyleSheet = static_cast<CSSStyleSheet*>(styleDeclaration->stylesheet());
// The background-image and list-style-image (for ul or ol) are the CSS properties
// that make use of images. We iterate to make sure we include any other
// image properties there might be.
for (unsigned i = 0; i < styleDeclaration->length(); ++i) {
// FIXME: It's kind of ridiculous to get the property name and then get
// the value out of the name. Ideally we would get the value out of the
// property ID, but CSSStyleDeclaration only gives access to property
// names, not IDs.
RefPtr<CSSValue> cssValue = styleDeclaration->getPropertyCSSValue(styleDeclaration->item(i));
if (!cssValue->isImageValue())
continue;
CSSImageValue* imageValue = static_cast<CSSImageValue*>(cssValue.get());
StyleImage* styleImage = imageValue->cachedOrPendingImage();
// Non cached-images are just place-holders and do not contain data.
if (!styleImage || !styleImage->isCachedImage())
continue;
CachedImage* image = static_cast<StyleCachedImage*>(styleImage)->cachedImage();
KURL url = cssStyleSheet->document()->completeURL(image->url());
addImageToResources(image, url);
}
}
CSSStyleSheet::CSSStyleSheet(CSSRule* ownerRule, const String& href, const KURL& baseURL, const String& charset)
: StyleSheet(ownerRule, href, baseURL)
, m_charset(charset)
, m_loadCompleted(false)
, m_strictParsing(!ownerRule || ownerRule->useStrictParsing())
, m_hasSyntacticallyValidCSSHeader(true)
{
CSSStyleSheet* parentSheet = ownerRule ? ownerRule->parentStyleSheet() : 0;
m_document = parentSheet ? parentSheet->document() : 0;
m_isUserStyleSheet = parentSheet ? parentSheet->isUserStyleSheet() : false;
}
void CSSImportRule::insertedIntoParent()
{
CSSStyleSheet* parentSheet = parentStyleSheet();
if (!parentSheet || !parentSheet->document())
return;
CachedResourceLoader* cachedResourceLoader = parentSheet->document()->cachedResourceLoader();
if (!cachedResourceLoader)
return;
String absHref = m_strHref;
if (!parentSheet->finalURL().isNull())
// use parent styleheet's URL as the base URL
absHref = KURL(parentSheet->finalURL(), m_strHref).string();
// Check for a cycle in our import chain. If we encounter a stylesheet
// in our parent chain with the same URL, then just bail.
StyleBase* root = this;
for (StyleBase* curr = parent(); curr; curr = curr->parent()) {
// FIXME: This is wrong if the finalURL was updated via document::updateBaseURL.
if (curr->isCSSStyleSheet() && absHref == static_cast<CSSStyleSheet*>(curr)->finalURL().string())
return;
root = curr;
}
ResourceRequest request(parentSheet->document()->completeURL(absHref));
if (parentSheet->isUserStyleSheet())
m_cachedSheet = cachedResourceLoader->requestUserCSSStyleSheet(request, parentSheet->charset());
else
m_cachedSheet = cachedResourceLoader->requestCSSStyleSheet(request, parentSheet->charset());
if (m_cachedSheet) {
// if the import rule is issued dynamically, the sheet may be
// removed from the pending sheet count, so let the doc know
// the sheet being imported is pending.
if (parentSheet && parentSheet->loadCompleted() && root == parentSheet)
parentSheet->startLoadingDynamicSheet();
m_loading = true;
m_cachedSheet->addClient(this);
}
}