108 lines
4.3 KiB
Markdown
108 lines
4.3 KiB
Markdown
Title: Trying out a Ladybird Browser contribution
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Date: 2024-11-09T14:46:36-04:00
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Draft: 1
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---
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## CSSKeywordValue
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WPT tests
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https://wpt.fyi/results/css/css-typed-om/the-stylepropertymap/properties/all.html?product=ladybird&product=chromium&product=firefox%5Bstable%5D
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Error:
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ERROR message: Binding gCssWideKeywordsExamples is not initialized
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Then open the test in ladybird:
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http://wpt.live/css/css-typed-om/the-stylepropertymap/properties/all.html
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Error in logs:
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[408/411] Linking CXX executable bin/Ladybird
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148800.761 WebContent(457739): Unhandled JavaScript exception: [ReferenceError] 'CSSKeywordValue' is not defined
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148800.761 WebContent(457739): at <unknown>
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148800.761 WebContent(457739): Unhandled JavaScript exception: [ReferenceError] Binding gCssWideKeywordsExamples is not initialized
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148800.761 WebContent(457739): at runPropertyTests (http://wpt.live/css/css-typed-om/the-stylepropertymap/properties/resources/testsuite.js:420:22)
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at http://wpt.live/css/css-typed-om/the-stylepropertymap/properties/all.html:4:17
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### Fixing it
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CSSKeywordValue needs to be avail from window/global context as a native function.
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Adding a new IDL file: https://github.com/LadybirdBrowser/ladybird/blob/master/Documentation/AddNewIDLFile.md
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Which then looks like it generates things like:
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./Build/release/Lagom/Userland/Libraries/LibWeb/Bindings/CSSKeywordValuePrototype.h
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./Build/release/Lagom/Userland/Libraries/LibWeb/Bindings/CSSKeywordValueConstructor.h
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./Build/release/Lagom/Userland/Libraries/LibWeb/Bindings/CSSKeywordValueConstructor.cpp
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Next is making it actually work in the JS engine
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Pattern matching candidates:
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❯ rg -l JS_DEFINE_ALLOCATOR | grep -i css | xargs wc -l | sort -n
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35 Userland/Libraries/LibWeb/CSS/MediaQueryListEvent.cpp
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39 Userland/Libraries/LibWeb/CSS/AnimationEvent.cpp
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48 Userland/Libraries/LibWeb/CSS/CSSKeyframeRule.cpp
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57 Userland/Libraries/LibWeb/CSS/CSSLayerStatementRule.cpp
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60 Userland/Libraries/LibWeb/CSS/CSSNamespaceRule.cpp
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61 Userland/Libraries/LibWeb/CSS/CSSKeyframesRule.cpp
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61 Userland/Libraries/LibWeb/CSS/CSSSupportsRule.cpp
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70 Userland/Libraries/LibWeb/CSS/ScreenOrientation.cpp
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76 Userland/Libraries/LibWeb/CSS/CSSPropertyRule.cpp
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77 Userland/Libraries/LibWeb/CSS/CSSNestedDeclarations.cpp
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78 Userland/Libraries/LibWeb/CSS/CSSMediaRule.cpp
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80 Userland/Libraries/LibWeb/CSS/CSSLayerBlockRule.cpp
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80 Userland/Libraries/LibWeb/CSS/Screen.cpp
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82 Userland/Libraries/LibWeb/CSS/CSSAnimation.cpp
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115 Userland/Libraries/LibWeb/CSS/MediaQueryList.cpp
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120 Userland/Libraries/LibWeb/CSS/MediaList.cpp
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131 Userland/Libraries/LibWeb/CSS/CSSImportRule.cpp
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154 Userland/Libraries/LibWeb/CSS/VisualViewport.cpp
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158 Userland/Libraries/LibWeb/CSS/CSSTransition.cpp
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175 Userland/Libraries/LibWeb/CSS/StyleSheetList.cpp
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205 Userland/Libraries/LibWeb/CSS/CSSFontFaceRule.cpp
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217 Userland/Libraries/LibWeb/CSS/CSSStyleRule.cpp
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219 Userland/Libraries/LibWeb/CSS/CSSRuleList.cpp
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295 Userland/Libraries/LibWeb/CSS/FontFaceSet.cpp
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417 Userland/Libraries/LibWeb/CSS/FontFace.cpp
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419 Userland/Libraries/LibWeb/CSS/CSSStyleSheet.cpp
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541 Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.cpp
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659 Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
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4729 total
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Userland/Libraries/LibWeb/CSS/CSSAnimation.idl looks very good
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#import <Animations/Animation.idl>
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// https://www.w3.org/TR/css-animations-2/#cssanimation
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[Exposed=Window]
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interface CSSAnimation : Animation {
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readonly attribute CSSOMString animationName;
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};
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Or Userland/Libraries/LibWeb/DOMURL/DOMURL.idl that has an example of a constructor value.
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#import <FileAPI/Blob.idl>
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#import <DOMURL/URLSearchParams.idl>
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// https://url.spec.whatwg.org/#url
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[Exposed=*, LegacyWindowAlias=webkitURL, ImplementedAs=DOMURL]
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interface URL {
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constructor(USVString url, optional USVString base);
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[ImplementedAs=parse_for_bindings] static DOMURL? parse(USVString url, optional USVString base);
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static boolean canParse(USVString url, optional USVString base);
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stringifier attribute USVString href;
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readonly attribute USVString origin;
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attribute USVString protocol;
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attribute USVString username;
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...
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