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LibWeb: Serialize CSS declarations as shorthands where applicable
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Browse source 
When serializing CSS declarations we now support combining multiple
properties into a single shorthand property in some cases.

This comes with a healthy dose of FIXMEs, including work to be done
around supporting:
 - Nested shorthands (e.g. background, border, etc)
 - Shorthands which aren't represented by the ShorthandStyleValue type
 - Subproperties pending substitution

This gains us a bunch of new test passes, both for WPT and in-tree
This commit is contained in:
Callum Law 2025-05-27 20:28:34 +12:00 • committed by Jelle Raaijmakers
commit ed65d5b342
Notes: github-actions[bot] 2025-05-29 10:05:38 +00:00
9 changed files with 249 additions and 36 deletions
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2
Tests/LibWeb/Text/expected/HTML/background-shorthand.txt
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@ -1,4 +1,4 @@
style.cssText = background-color: yellow; background-image: none; background-position-x: 0%; background-position-y: 0%; background-size: auto auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;
style.cssText = background-color: yellow; background-image: none; background-position: 0% 0%; background-size: auto auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;
style.length = 9
style[] =
1. background-color