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Re: [css3-grid-layout] Misuse of computed style

From: Glenn Adams <glenn@skynav.com>
Date: Thu, 9 Aug 2012 03:42:43 -0600
Message-ID: <CACQ=j+cFUgY7B-702aQ852RXFwSqPM0oZJ95qoH3KBbVs_6Oag@mail.gmail.com>
To: fantasai <fantasai.lists@inkedblade.net>
Cc: "www-style@w3.org" <www-style@w3.org>
On Thu, Aug 9, 2012 at 1:16 AM, fantasai <fantasai.lists@inkedblade.net>wrote:

> The current editor's draft has this paragraph:
>
>    # The computed size of all Grid tracks as returned for the
> 'grid-definition-rows'
>    # and 'grid-definition-columns' properties are normalized to used pixel
> values.
>    # All Grid tracks are included in the computed value reported for
> 'grid-definition-rows'
>    # and 'grid-definition-columns' regardless of how the Grid tracks were
> created,
>    # e.g. implicit tracks may be created by Grid items referencing a Grid
> line not
>    # explicitly defined by a 'grid-definition-rows' or
> 'grid-definition-columns'
>    # property. The computed value includes any used values for named
> lines; any
>    # duplicate names must be removed. User agents may use the repeat
> syntax to
>    # avoid expansive string length due to implicit Grid track creation,
> large
>    # spanning values or high repeat counts specified by the author.
>
> While the result of getComputedStyle might rely on used values
> in certain cases, the "computed value" per CSS terminology cannot
> depend on used values, as used values are calculated with the
> computed values as input.
>
> So there are two issues here:
>    1. Misuse of terminology needs fixing. (See CSS2.1 section 6.1.)
>    2. Do we want these properties' getComputedStyle to return
>       computed or used values?


Note that CSSOM uses the term "resolved value" [1] to refer to what
getComputedStyle returns. So question #2 should be: what is the resolved
value for these properties?

[1]
http://dvcs.w3.org/hg/csswg/raw-file/tip/cssom/Overview.html#resolved-values
Received on Thursday, 9 August 2012 09:43:34 GMT

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