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_isUserStyleSheet = parentSheet ? parentSheet->isUserStyleSheet() : false;
}
CSSStyleSheet::CSSStyleSheet(StyleRuleImport* ownerRule, const String& href, const KURL& baseURL, const String& charset)
: StyleSheet(href, baseURL)
, m_ownerRule(ownerRule)
, m_charset(charset)
, m_loadCompleted(false)
, m_cssParserMode((ownerRule && ownerRule->parentStyleSheet()) ? ownerRule->parentStyleSheet()->cssParserMode() : CSSStrictMode)
, m_hasSyntacticallyValidCSSHeader(true)
, m_didLoadErrorOccur(false)
{
CSSStyleSheet* parentSheet = ownerRule ? ownerRule->parentStyleSheet() : 0;
m_isUserStyleSheet = parentSheet ? parentSheet->isUserStyleSheet() : false;
}
void CSSImportRule::requestStyleSheet()
{
CSSStyleSheet* parentSheet = parentStyleSheet();
if (!parentSheet)
return;
Document* document = parentSheet->findDocument();
if (!document)
return;
CachedResourceLoader* cachedResourceLoader = 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.
CSSStyleSheet* rootSheet = parentSheet;
for (CSSStyleSheet* sheet = parentSheet; sheet; sheet = sheet->parentStyleSheet()) {
// FIXME: This is wrong if the finalURL was updated via document::updateBaseURL.
if (absHref == sheet->finalURL().string())
return;
rootSheet = sheet;
}
ResourceRequest request(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() && rootSheet == parentSheet)
parentSheet->startLoadingDynamicSheet();
m_loading = true;
m_cachedSheet->addClient(&m_styleSheetClient);
}
}
void CSSImportRule::insertedIntoParent()
{
CSSStyleSheet* parentSheet = parentStyleSheet();
if (!parentSheet)
return;
DocLoader* docLoader = parentSheet->doc()->docLoader();
if (!docLoader)
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;
}
if (parentSheet->isUserStyleSheet())
m_cachedSheet = docLoader->requestUserCSSStyleSheet(absHref, parentSheet->charset());
else
m_cachedSheet = docLoader->requestCSSStyleSheet(absHref, 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->doc()->addPendingSheet();
m_loading = true;
m_cachedSheet->addClient(this);
}
}