Re: [cssom][css-grid] maintaining "resolved value"

On Thu, Sep 19, 2013 at 2:27 PM, Tab Atkins Jr. <jackalmage@gmail.com>wrote:

> On Thu, Sep 19, 2013 at 11:08 AM, Mike Sherov <mike.sherov@gmail.com>
> wrote:
> > As per http://lists.w3.org/Archives/Public/www-style/2013Sep/0468.html, it
> > was decided that "gCS returns used values for
> grid-template-rows/columns".
> >
> > While I respect this decision for reasons of practicality, it creates
> > another special snowflake case for the definition of "resolved value",
> and
> > is in danger of setting a precedent for how window.getComputedStyle()
> should
> > work.
>
> This was a problem due to the special case that Grid occupies in
> Windows 8, where it was used for Windows apps long before it was
> stable for web apps.  We definitely didn't *like* doing this, but it's
> not very important to us, so it was decided that it was better to have
> this oddity than trying to force IE to swallow a big compat burden.
>
> > Some more clarity from Rossen around how having a used value helped with
> > tooling would perhaps help me understand the decision better.
>
> Oh, that's pretty easy to explain.  If you have some design tools that
> use Grid to help you design the page, getting px values out is *way*
> more useful than getting a mix of random CSS units.  It loses some
> information, yeah, but it makes a lot of things way easier.
>

I'm actually a big fan of getting px values. Forcing getComputedStyle() to
return computed values, however, would place pressure on us to get the
better interfaces like .usedStyle or the new theoretically Values API in
place.


>
> > I'm not asking for any action, per se, but I'm just raising a general
> > concern for the size of the already long caveat list for "resolved
> value":
> > http://dev.w3.org/csswg/cssom/#resolved-values
>
> It's a crappy legacy function, don't shed too many tears for it.  ^_^
> We have better APIs specced for this stuff now.
>

I'm waiting on baited breath :-)


>
> ~TJ
>



-- 
Mike Sherov
Chief Technologist
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