static void configureRequest(FetchRequest& request, ImageLoader::BypassMainWorldBehavior bypassBehavior, Element& element, const ClientHintsPreferences& clientHintsPreferences)
{
if (bypassBehavior == ImageLoader::BypassMainWorldCSP)
request.setContentSecurityCheck(DoNotCheckContentSecurityPolicy);
AtomicString crossOriginMode = element.fastGetAttribute(HTMLNames::crossoriginAttr);
if (!crossOriginMode.isNull())
request.setCrossOriginAccessControl(element.document().securityOrigin(), crossOriginMode);
if (clientHintsPreferences.shouldSendResourceWidth() && isHTMLImageElement(element))
request.setResourceWidth(toHTMLImageElement(element).resourceWidth());
}
void LinkStyle::process()
{
ASSERT(m_owner->shouldProcessStyle());
String type = m_owner->typeValue().lower();
LinkRequestBuilder builder(m_owner);
if (m_owner->relAttribute().iconType() != InvalidIcon && builder.url().isValid() && !builder.url().isEmpty()) {
if (!m_owner->shouldLoadLink())
return;
if (!document().securityOrigin()->canDisplay(builder.url()))
return;
if (!document().contentSecurityPolicy()->allowImageFromSource(builder.url()))
return;
if (document().frame() && document().frame()->loader().client())
document().frame()->loader().client()->dispatchDidChangeIcons(m_owner->relAttribute().iconType());
}
if (!m_owner->loadLink(type, builder.url()))
return;
if ((m_disabledState != Disabled) && m_owner->relAttribute().isStyleSheet()
&& shouldLoadResource() && builder.url().isValid()) {
if (resource()) {
removePendingSheet();
clearResource();
}
if (!m_owner->shouldLoadLink())
return;
m_loading = true;
bool mediaQueryMatches = true;
if (!m_owner->media().isEmpty()) {
LocalFrame* frame = loadingFrame();
if (Document* document = loadingFrame()->document()) {
RefPtr<RenderStyle> documentStyle = StyleResolver::styleForDocument(*document);
RefPtrWillBeRawPtr<MediaQuerySet> media = MediaQuerySet::create(m_owner->media());
MediaQueryEvaluator evaluator(frame->view()->mediaType(), frame, documentStyle.get());
mediaQueryMatches = evaluator.eval(media.get());
}
}
// Don't hold up render tree construction and script execution on stylesheets
// that are not needed for the rendering at the moment.
bool blocking = mediaQueryMatches && !m_owner->isAlternate();
addPendingSheet(blocking ? Blocking : NonBlocking);
// Load stylesheets that are not needed for the rendering immediately with low priority.
FetchRequest request = builder.build(blocking);
AtomicString crossOriginMode = m_owner->fastGetAttribute(HTMLNames::crossoriginAttr);
if (!crossOriginMode.isNull())
request.setCrossOriginAccessControl(document().securityOrigin(), crossOriginMode);
setResource(document().fetcher()->fetchCSSStyleSheet(request));
if (!resource()) {
// The request may have been denied if (for example) the stylesheet is local and the document is remote.
m_loading = false;
removePendingSheet();
}
} else if (m_sheet) {
// we no longer contain a stylesheet, e.g. perhaps rel or type was changed
RefPtrWillBeRawPtr<StyleSheet> removedSheet = m_sheet.get();
clearSheet();
document().removedStyleSheet(removedSheet.get());
}
}
void LinkStyle::process() {
DCHECK(m_owner->shouldProcessStyle());
String type = m_owner->typeValue().lower();
String as = m_owner->asValue().lower();
String media = m_owner->media().lower();
LinkRequestBuilder builder(m_owner);
if (m_owner->relAttribute().getIconType() != InvalidIcon &&
builder.url().isValid() && !builder.url().isEmpty()) {
if (!m_owner->shouldLoadLink())
return;
if (!document().getSecurityOrigin()->canDisplay(builder.url()))
return;
if (!document().contentSecurityPolicy()->allowImageFromSource(
builder.url()))
return;
if (document().frame() && document().frame()->loader().client()) {
document().frame()->loader().client()->dispatchDidChangeIcons(
m_owner->relAttribute().getIconType());
}
}
if (!m_owner->loadLink(type, as, media, builder.url()))
return;
if (m_disabledState != Disabled && m_owner->relAttribute().isStyleSheet() &&
styleSheetTypeIsSupported(type) && shouldLoadResource() &&
builder.url().isValid()) {
if (resource()) {
removePendingSheet();
clearResource();
clearFetchFollowingCORS();
}
if (!m_owner->shouldLoadLink())
return;
m_loading = true;
String title = m_owner->title();
if (!title.isEmpty() && !m_owner->isAlternate() &&
m_disabledState != EnabledViaScript && m_owner->isInDocumentTree()) {
document().styleEngine().setPreferredStylesheetSetNameIfNotSet(
title, StyleEngine::DontUpdateActiveSheets);
}
bool mediaQueryMatches = true;
LocalFrame* frame = loadingFrame();
if (!m_owner->media().isEmpty() && frame) {
MediaQuerySet* media = MediaQuerySet::create(m_owner->media());
MediaQueryEvaluator evaluator(frame);
mediaQueryMatches = evaluator.eval(media);
}
// Don't hold up layout tree construction and script execution on
// stylesheets that are not needed for the layout at the moment.
bool blocking = mediaQueryMatches && !m_owner->isAlternate() &&
m_owner->isCreatedByParser();
addPendingSheet(blocking ? Blocking : NonBlocking);
// Load stylesheets that are not needed for the layout immediately with low
// priority. When the link element is created by scripts, load the
// stylesheets asynchronously but in high priority.
bool lowPriority = !mediaQueryMatches || m_owner->isAlternate();
FetchRequest request = builder.build(lowPriority);
CrossOriginAttributeValue crossOrigin = crossOriginAttributeValue(
m_owner->fastGetAttribute(HTMLNames::crossoriginAttr));
if (crossOrigin != CrossOriginAttributeNotSet) {
request.setCrossOriginAccessControl(document().getSecurityOrigin(),
crossOrigin);
setFetchFollowingCORS();
}
String integrityAttr = m_owner->fastGetAttribute(HTMLNames::integrityAttr);
if (!integrityAttr.isEmpty()) {
IntegrityMetadataSet metadataSet;
SubresourceIntegrity::parseIntegrityAttribute(integrityAttr, metadataSet);
request.setIntegrityMetadata(metadataSet);
}
setResource(CSSStyleSheetResource::fetch(request, document().fetcher()));
if (m_loading && !resource()) {
// The request may have been denied if (for example) the stylesheet is
// local and the document is remote, or if there was a Content Security
// Policy Failure. setCSSStyleSheet() can be called synchronuosly in
// setResource() and thus resource() is null and |m_loading| is false in
// such cases even if the request succeeds.
m_loading = false;
removePendingSheet();
notifyLoadedSheetAndAllCriticalSubresources(
Node::ErrorOccurredLoadingSubresource);
}
} else if (m_sheet) {
// we no longer contain a stylesheet, e.g. perhaps rel or type was changed
StyleSheet* removedSheet = m_sheet.get();
clearSheet();
document().styleEngine().setNeedsActiveStyleUpdate(removedSheet,
FullStyleUpdate);
}
}