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Re: [cssom] Proposal for obtaining robust style information via Javascript - getStyle()

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Thu, 31 Jan 2013 18:22:03 -0800
Message-ID: <CAAWBYDAy1iPGhLhn0jF48z6Wb8JGUh2ibeQoXKtGHu0GOGTA8w@mail.gmail.com>
To: Boris Zbarsky <bzbarsky@mit.edu>
Cc: Mike Sherov <mike.sherov@gmail.com>, "www-style@w3.org" <www-style@w3.org>
On Thu, Jan 31, 2013 at 6:17 PM, Boris Zbarsky <bzbarsky@mit.edu> wrote:
> On 1/31/13 9:02 PM, Mike Sherov wrote:
>> I believe the proposal is a bit broader, but I'll take any interest :-)
>> I believe is what we're talking about, so you can get "used",
>> "computed", "specified", "resolved", "actual", "initial", "default" or
>> any other value type for a CSS property or an element
>
> I see.
>
> Getting used values is, in many cases, pretty painful.  Gecko, for example,
> doesn't really store it in many cases; there would need to be special code
> to recompute it.  Even the bits we already have to do for getComputedStyle
> are bad enough.  :(

If we ever want to do stuff like the CSSOM Values API that allow for
translating between units, we'll need this kind of thing anyway.

> I can't find any documentation of what "resolved" values are.

That's the term for what getComputedStyle returns.

> Initial and default values ought to be reasonably easy to do, I'd think;
> they're really a special case of specified values with not all rules taken
> into account at heart.

Yes.

~TJ
Received on Friday, 1 February 2013 02:22:50 GMT

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