Re: [csswg-drafts] [css-view-transitions-2] Allow an auto-generated `view-transition-name` that doesn't default to ID (#10995)

Not a big fan of it, but also not against it.

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I recently read up on [`first-valid()`](https://www.w3.org/TR/css-values-5/#first-valid) – which I didn’t know existed up until then.

This give me a new idea _(which would alter the resolution from #8320)_: what if there was a function that allowed authors to list certain options and it returns the first non empty one?

- `auto` = auto generate a name _(element identity)_.
- `attr(id "<ident>")` = use id attribute
- `first-non-empty(attr(id "<ident>"), auto)` = try getting id attribute first. if there is none, fall back to `auto` behavior.

That would prevent a lot of confusion on the author side, as `auto` here now means “auto-generate a v-t-name”.

Otoh it would require a little more typing if they want the fallback behavior, but it would also allow authors to add more options to the fallback: e.g. `first-non-empty(attr(id "<ident>"), attr(data-name "<ident>"), auto)`

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Received on Sunday, 6 October 2024 19:50:49 UTC