On Sat, Jun 27, 2009 at 11:44 AM, L. David Baron <dbaron@dbaron.org> wrote:
> I have another question about transitions that I think ought to be
> addressed in the spec ( http://dev.w3.org/csswg/css3-transitions/ ),
> though in this case I'm not exactly sure how it should be addressed
> in the spec.
>
> This is the question of whether transition should be associated with
> a change in style on a content node, or a change in style on a
> rendering object (a box). Either solution poses a bunch of
> problems.
>
> If transitions are associated with the style on an element (DOM
> node), then we have problems in any case where a content node has
> more than one style. The main case of this I can think of is
> pseudo-elements. For example, I think it's hard to do something
> sensible with:
> p { color: gray; }
> p::first-line { color: black; }
> p:hover { color: blue; }
> p:hover::first-line { color: aqua; }
> a { transition: 3s color; }
> then it's really not clear what the transition on the anchor should
> be when the p goes into the :hover state (either when the anchor is
> split between the first line and the second, or when the anchor is
> entirely in the first line).
>
How about: if an element has a first-line or first-letter rule setting a
property on it, then transitions on that property are disabled for the
element and all its descendants.
Rob