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LibWeb: Parse box-shadow property in new CSS Parser

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Previous multi-value properties use a ValueListStyleValue, which then
gets parsed into its sub-properties in the StyleResolver. However, that
is not ideal, especially as it exposes StyleResolver to the inner
workings of the Parser and Tokenizer, which it should not need to know
about.

The way `box-shadow` was implemented as a StyleValue subclass means that
the parsing can happen inside the Parser instead, which seems like a
better solution. Converting the other complicated cases (background,
font, list-style) is on my todo list for later.
This commit is contained in:
Sam Atkins 2021-07-28 14:12:28 +01:00 • committed by Andreas Kling
parent 697bffa3bd
commit 919eb7c0aa
2 changed files with 48 additions and 0 deletions
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Userland/Libraries/LibWeb/CSS/Parser/Parser.h
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@ -176,6 +176,7 @@ private:
static RefPtr<StyleValue> parse_color_value(ParsingContext const&, StyleComponentValueRule const&);
static RefPtr<StyleValue> parse_string_value(ParsingContext const&, StyleComponentValueRule const&);
static RefPtr<StyleValue> parse_image_value(ParsingContext const&, StyleComponentValueRule const&);
static RefPtr<StyleValue> parse_box_shadow_value(ParsingContext const&, Vector<StyleComponentValueRule> const&);
template<typename T>
Optional<SelectorList> parse_a_selector_list(TokenStream<T>&);