Turn CSSStyleRule into a CSSGroupingRule subclass (#36254)

Note that `StyleRule` may not have the `CssRules` readily available,
they may need to be created. So the previous approach of providing
`CSSGroupingRule` with the `CssRules` is no good: it would require
writing them in advance, just in case they end up being used.

Therefore, this removes the `CSSGroupingRule::rules` field. Instead,
they are lazily obtained in `CSSGroupingRule::rulelist()` by downcasting
and calling the appropriate method for the subclass.

Testing: covered by WPT
Fixes: #36245

Signed-off-by: Oriol Brufau <obrufau@igalia.com>
This commit is contained in:
Oriol Brufau 2025-04-01 12:18:07 -07:00 committed by GitHub
parent dba8a0c22c
commit 0cdc1dcf72
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8 changed files with 83 additions and 76 deletions

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@ -1,33 +1,6 @@
[cssom.html]
[CSSStyleRule is a CSSGroupingRule]
expected: FAIL
[Simple CSSOM manipulation of subrules]
expected: FAIL
[Simple CSSOM manipulation of subrules 1]
expected: FAIL
[Simple CSSOM manipulation of subrules 2]
expected: FAIL
[Simple CSSOM manipulation of subrules 3]
expected: FAIL
[Simple CSSOM manipulation of subrules 4]
expected: FAIL
[Simple CSSOM manipulation of subrules 5]
expected: FAIL
[Simple CSSOM manipulation of subrules 6]
expected: FAIL
[Simple CSSOM manipulation of subrules 7]
expected: FAIL
[Simple CSSOM manipulation of subrules 9]
expected: FAIL
[Manipulation of nested declarations through CSSOM]
expected: FAIL