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Issue #2158 - Part 4: Dispatch load/error events upon parsing preload links

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This commit is contained in:
FranklinDM 2024-01-27 16:38:43 +08:00 • committed by roytam1
commit 95490b25eb
7 changed files with 408 additions and 25 deletions
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49
dom/base/nsContentSink.cpp
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@ -48,6 +48,7 @@
#include "nsIObserverService.h"
#include "mozilla/Preferences.h"
#include "mozilla/dom/ScriptLoader.h"
#include "mozilla/dom/Link.h"
#include "nsParserConstants.h"
#include "nsSandboxFlags.h"
@ -724,18 +725,21 @@ nsContentSink::ProcessLink(const nsSubstring& aAnchor, const nsSubstring& aHref,
return NS_OK;
}
bool hasPrefetch = linkTypes & nsStyleLinkElement::ePREFETCH;
// prefetch href if relation is "next" or "prefetch"
if (hasPrefetch || (linkTypes & nsStyleLinkElement::eNEXT)) {
PrefetchHref(aHref, mDocument, hasPrefetch);
if ((linkTypes & nsStyleLinkElement::eNEXT) ||
(linkTypes & nsStyleLinkElement::ePREFETCH) ||
(linkTypes & nsStyleLinkElement::ePRELOAD)) {
PrefetchOrPreloadHref(aHref, mDocument, linkTypes, aDestination, aType, aMedia);
}
if (!aHref.IsEmpty() && (linkTypes & nsStyleLinkElement::eDNS_PREFETCH)) {
PrefetchDNS(aHref);
}
if (!aHref.IsEmpty()) {
if (linkTypes & nsStyleLinkElement::eDNS_PREFETCH) {
PrefetchDNS(aHref);
}
if (!aHref.IsEmpty() && (linkTypes & nsStyleLinkElement::ePRECONNECT)) {
Preconnect(aHref, aCrossOrigin);
if (linkTypes & nsStyleLinkElement::ePRECONNECT) {
Preconnect(aHref, aCrossOrigin);
}
}
// is it a stylesheet link?
@ -855,9 +859,12 @@ nsContentSink::ProcessMETATag(nsIContent* aContent)
void
nsContentSink::PrefetchHref(const nsAString &aHref,
nsINode *aSource,
bool aExplicit)
nsContentSink::PrefetchOrPreloadHref(const nsAString &aHref,
nsINode *aSource,
uint32_t aLinkTypes,
const nsAString& aDestination,
const nsAString& aType,
const nsAString& aMedia)
{
nsCOMPtr<nsIPrefetchService> prefetchService(do_GetService(NS_PREFETCHSERVICE_CONTRACTID));
if (prefetchService) {
@ -869,7 +876,25 @@ nsContentSink::PrefetchHref(const nsAString &aHref,
mDocument->GetDocBaseURI());
if (uri) {
nsCOMPtr<nsIDOMNode> domNode = do_QueryInterface(aSource);
prefetchService->PrefetchURI(uri, mDocumentURI, domNode, aExplicit);
if (aLinkTypes & nsStyleLinkElement::ePRELOAD) {
nsContentPolicyType policyType;
bool isPreloadValid = Link::CheckPreloadAttrs(policyType,
aDestination,
aType,
aMedia,
mDocument);
if (!isPreloadValid) {
// XXX: WPTs expect that we timeout on invalid preloads including
// those with valid destinations instead of firing an error event.
return;
}
nsContentUtils::DispatchEventForPreloadURI(domNode, policyType);
} else {
prefetchService->PrefetchURI(uri,
mDocumentURI,
domNode,
aLinkTypes & nsStyleLinkElement::ePREFETCH);
}
}
}
}