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LibWeb: Parse the -webkit-progress-bar/value pseudo elements

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These will be needed for styling progress bars, sadly this can
only be done with these non-standard selectors. These are, hovever,
in use on real sites such as https://rpcs3.net/compatibility.
This commit is contained in:
MacDue 2022-07-22 15:58:52 +01:00 • committed by Andreas Kling
parent 218e6d2f5e
commit b5febe538c
4 changed files with 21 additions and 3 deletions
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6
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
View file

@ -458,10 +458,12 @@ Parser::ParseErrorOr<Selector::SimpleSelector> Parser::parse_pseudo_simple_selec
}
auto pseudo_name = name_token.token().ident();
if (has_ignored_vendor_prefix(pseudo_name))
auto pseudo_element = pseudo_element_from_string(pseudo_name);
// Note: We allow the "ignored" -webkit prefix here for -webkit-progress-bar/-webkit-progress-bar
if (!pseudo_element.has_value() && has_ignored_vendor_prefix(pseudo_name))
return ParseError::IncludesIgnoredVendorPrefix;
auto pseudo_element = pseudo_element_from_string(pseudo_name);
if (!pseudo_element.has_value()) {
dbgln_if(CSS_PARSER_DEBUG, "Unrecognized pseudo-element: '::{}'", pseudo_name);
return ParseError::SyntaxError;

4
Userland/Libraries/LibWeb/CSS/Selector.cpp
View file

@ -352,6 +352,10 @@ Optional<Selector::PseudoElement> pseudo_element_from_string(StringView name)
return Selector::PseudoElement::FirstLine;
} else if (name.equals_ignoring_case("marker"sv)) {
return Selector::PseudoElement::Marker;
} else if (name.equals_ignoring_case("-webkit-progress-bar"sv)) {
return Selector::PseudoElement::ProgressBar;
} else if (name.equals_ignoring_case("-webkit-progress-value"sv)) {
return Selector::PseudoElement::ProgressValue;
}
return {};
}

8
Userland/Libraries/LibWeb/CSS/Selector.h
View file

@ -26,8 +26,10 @@ public:
FirstLine,
FirstLetter,
Marker,
ProgressValue,
ProgressBar
};
static auto constexpr PseudoElementCount = to_underlying(PseudoElement::Marker) + 1;
static auto constexpr PseudoElementCount = to_underlying(PseudoElement::ProgressBar) + 1;
struct SimpleSelector {
enum class Type {
@ -204,6 +206,10 @@ constexpr StringView pseudo_element_name(Selector::PseudoElement pseudo_element)
return "first-letter"sv;
case Selector::PseudoElement::Marker:
return "marker"sv;
case Selector::PseudoElement::ProgressBar:
return "-webkit-progress-bar"sv;
case Selector::PseudoElement::ProgressValue:
return "-webkit-progress-value"sv;
}
VERIFY_NOT_REACHED();
}

6
Userland/Libraries/LibWeb/Dump.cpp
View file

@ -492,6 +492,12 @@ void dump_selector(StringBuilder& builder, CSS::Selector const& selector)
case CSS::Selector::PseudoElement::Marker:
pseudo_element_description = "marker";
break;
case CSS::Selector::PseudoElement::ProgressBar:
pseudo_element_description = "-webkit-progress-bar";
break;
case CSS::Selector::PseudoElement::ProgressValue:
pseudo_element_description = "-webkit-progress-value";
break;
}
builder.appendff(" pseudo_element={}", pseudo_element_description);