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Support CSS shadow parts

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Basilisk-Dev 2026-05-11 19:33:30 -04:00 • committed by EAZYBLACK
commit b2d422ae49
10 changed files with 167 additions and 32 deletions
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32
layout/style/nsCSSParser.cpp
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@ -6959,6 +6959,8 @@ CSSParserImpl::ParsePseudoSelector(int32_t& aDataMask,
if (hybridPseudoElementType == CSSPseudoElementType::slotted) {
pseudoClassType = CSSPseudoClassType::slotted;
aFlags |= SelectorParsingFlags::eDisallowCombinators;
} else if (hybridPseudoElementType == CSSPseudoElementType::part) {
pseudoClassType = CSSPseudoClassType::part;
}
}
@ -7111,6 +7113,28 @@ CSSParserImpl::ParsePseudoSelector(int32_t& aDataMask,
UngetToken();
return eSelectorParsingStatus_Error;
}
else if (hybridPseudoElementType != CSSPseudoElementType::NotPseudo) {
aSelector.SetHybridPseudoType(hybridPseudoElementType);
// Ensure hybrid pseudo-elements are rejected if they're not allowed.
if (disallowPseudoElements) {
UngetToken();
return eSelectorParsingStatus_Error;
}
if (nsCSSPseudoClasses::HasStringArg(pseudoClassType)) {
parsingStatus =
ParsePseudoClassWithIdentArg(aSelector, pseudoClassType);
}
else if (nsCSSPseudoClasses::HasSelectorListArg(pseudoClassType)) {
parsingStatus = ParsePseudoClassWithSelectorListArg(aSelector,
pseudoClassType,
flags);
}
else {
MOZ_ASSERT(false, "unexpected hybrid pseudo-element");
parsingStatus = eSelectorParsingStatus_Error;
}
}
else if (nsCSSPseudoClasses::HasStringArg(pseudoClassType)) {
parsingStatus =
ParsePseudoClassWithIdentArg(aSelector, pseudoClassType);
@ -7122,14 +7146,6 @@ CSSParserImpl::ParsePseudoSelector(int32_t& aDataMask,
else {
MOZ_ASSERT(nsCSSPseudoClasses::HasSelectorListArg(pseudoClassType),
"unexpected pseudo with function token");
if (hybridPseudoElementType != CSSPseudoElementType::NotPseudo) {
aSelector.SetHybridPseudoType(hybridPseudoElementType);
// Ensure hybrid pseudo-elements are rejected if they're not allowed.
if (disallowPseudoElements) {
UngetToken();
return eSelectorParsingStatus_Error;
}
}
parsingStatus = ParsePseudoClassWithSelectorListArg(aSelector,
pseudoClassType,
flags);