Re: [csswg-drafts] [css-shadow-parts] Let ::theme() penetrate closed shadows from James Browning via GitHub on 2018-03-05 (public-css-archive@w3.org from March 2018)

From: James Browning via GitHub <sysbot+gh@w3.org>
Date: Mon, 05 Mar 2018 05:13:53 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-370311865-1520226832-sysbot+gh@w3.org>

You have a note in [proposed spec](https://drafts.csswg.org/css-shadow-parts-1/)

> It’s important to note that ::part() and ::theme() offer absolutely zero new theoretical power.

However this isn't true, you already say in the following statement that you can avoid overstyling. This happens because `::part`/`::theme` *can't* accidentally inherit styles whereas custom properties can.

With that in mind, if `::theme` pierces shadow roots in the same way that custom variables do, is there any point in having `::theme` over just implementing `@apply`, as it seems to me that any `::theme(some-name)` would be identical to `@apply(--some-name)` under this shadow-piercing scheme.

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Received on Monday, 5 March 2018 05:14:28 UTC