Bug 229903 – Clean up some mask-related properties in CSSProperties.json

• Component: CSS
• Status: RESOLVED WONTFIX

[Simon Fraser (smfr)]

Clean up some mask-related properties in CSSProperties.json

[Simon Fraser (smfr)]

Created attachment 437321 [details]
Patch

[Darin Adler]

Comment on attachment 437321 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=437321&action=review

> Source/WebCore/ChangeLog:10
> +        Remove "status": "experimental" from a bunch of mask-related properties, since they are no longer
> +        experimental. Mark -webkit-mask-position-x and -webkit-mask-position-y as internal-only, since they don't
> +        appear in the css-masking spec. Fix some formatting issues.

What does it mean to mark -webkit-mask-position-x as internal only? Does it mean the property won’t be exposed to websites?

[Simon Fraser (smfr)]

(In reply to Darin Adler from comment #2)
> Comment on attachment 437321 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=437321&action=review
> 
> > Source/WebCore/ChangeLog:10
> > +        Remove "status": "experimental" from a bunch of mask-related properties, since they are no longer
> > +        experimental. Mark -webkit-mask-position-x and -webkit-mask-position-y as internal-only, since they don't
> > +        appear in the css-masking spec. Fix some formatting issues.
> 
> What does it mean to mark -webkit-mask-position-x as internal only? Does it
> mean the property won’t be exposed to websites?

It means that they don't appear in computed style or style properties, and they don't parse.

[Simon Fraser (smfr)]

It's possible that this is not web compatible. https://www.chromestatus.com/metrics/css/popularity says that -webkit-mask-position-x is used on 0.093755% of page loads.

I may have to only make the unprefixed versions internal.