[css-cascade] Support 'revert-layer' in @keyframes

• Component: CSS
• Status: RESOLVED FIXED

[Oriol Brufau]

Created attachment 453128 [details]
testcase

Analogous to bug 237073, 'revert-layer' doesn't work in @keyframes, it just behaves as 'unset'.

Note that unlike 'revert', it should roll back to author origin, not to user origin.

https://drafts.csswg.org/css-cascade-5/#revert-layer

[Oriol Brufau]

Created attachment 453142 [details]
Patch

[Oriol Brufau]

PTAL. Not sure if BuilderState is the right class to store the flag, or if it would be better in Builder or PropertyCascade.

[Antti Koivisto]

Comment on attachment 453142 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=453142&action=review

> Source/WebCore/style/StyleBuilderState.h:110
> +    void setIgnoreRevertLayer() { m_ignoreRevertLayer = true; }

Maybe this should be more specific like m_isBuildingKeyframeStyle as I don't think it has any other uses.

[Oriol Brufau]

Created attachment 453595 [details]
Patch

[Oriol Brufau]

(In reply to Antti Koivisto from comment #3)
> Maybe this should be more specific like m_isBuildingKeyframeStyle as I don't
> think it has any other uses.

Done. Also moved the comment since with the new name the explanation seemed more needed in Builder::applyProperty.

[EWS]

Committed r290729 (247976@main): <https://commits.webkit.org/247976@main>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 453595 [details].

[Radar WebKit Bug Importer]

<rdar://problem/89686640>