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Issue #2158 - Part 2: Handle and expose preload link destination to DOM

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This also defines known preload destinations and ensures it is reflected in JS.
This commit is contained in:
FranklinDM 2023-03-11 16:42:18 +08:00 • committed by roytam1
commit 24189770aa
11 changed files with 98 additions and 5 deletions
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14
dom/base/nsContentSink.cpp
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@ -471,6 +471,7 @@ nsContentSink::ProcessLinkHeader(const nsAString& aLinkData)
nsAutoString media;
nsAutoString anchor;
nsAutoString crossOrigin;
nsAutoString destination;
crossOrigin.SetIsVoid(true);
@ -653,6 +654,11 @@ nsContentSink::ProcessLinkHeader(const nsAString& aLinkData)
crossOrigin = value;
crossOrigin.StripWhitespace();
}
} else if (attr.LowerCaseEqualsLiteral("as")) {
if (destination.IsEmpty()) {
destination = value;
destination.StripWhitespace();
}
}
}
}
@ -666,7 +672,7 @@ nsContentSink::ProcessLinkHeader(const nsAString& aLinkData)
rv = ProcessLink(anchor, href, rel,
// prefer RFC 5987 variant over non-I18zed version
titleStar.IsEmpty() ? title : titleStar,
type, media, crossOrigin);
type, media, crossOrigin, destination);
}
href.Truncate();
@ -676,6 +682,7 @@ nsContentSink::ProcessLinkHeader(const nsAString& aLinkData)
media.Truncate();
anchor.Truncate();
crossOrigin.SetIsVoid(true);
destination.Truncate();
seenParameters = false;
}
@ -688,7 +695,7 @@ nsContentSink::ProcessLinkHeader(const nsAString& aLinkData)
rv = ProcessLink(anchor, href, rel,
// prefer RFC 5987 variant over non-I18zed version
titleStar.IsEmpty() ? title : titleStar,
type, media, crossOrigin);
type, media, crossOrigin, destination);
}
return rv;
@ -699,7 +706,8 @@ nsresult
nsContentSink::ProcessLink(const nsSubstring& aAnchor, const nsSubstring& aHref,
const nsSubstring& aRel, const nsSubstring& aTitle,
const nsSubstring& aType, const nsSubstring& aMedia,
const nsSubstring& aCrossOrigin)
const nsSubstring& aCrossOrigin,
const nsSubstring& aDestination)
{
uint32_t linkTypes =
nsStyleLinkElement::ParseLinkTypes(aRel, mDocument->NodePrincipal());