Bug 254297

Summary:	StyleRuleGroup should be composited instead of inherited
Product:	WebKit	Reporter:	Matthieu Dubet <m_dubet>
Component:	WebCore Misc.	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Matthieu Dubet 2023-03-22 16:48:28 PDT

Currently, StyleRuleGroup is modeled exactly like CSSGroupingRule (being an intermediate class in the Rule <-> StyleRule hierarchy).

https://w3c.github.io/csswg-drafts/cssom/#the-cssgroupingrule-interface

We should favor composition instead of inheritance in general, and this is also a prerequisite of the CSS Nesting CSSOM implementation.

Comment 1 Radar WebKit Bug Importer 2023-03-22 16:48:45 PDT

<rdar://problem/107103847>

Comment 2 Matthieu Dubet 2023-03-22 16:52:07 PDT

Pull request: https://github.com/WebKit/WebKit/pull/11835