W3C home > Mailing lists > Public > www-style@w3.org > April 2012

Re: [css4-ui] ::tooltip

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Fri, 13 Apr 2012 10:20:27 -0700
Message-ID: <CAAWBYDDLKpmzHx4u6OWvgoLH2o2YmPHq7Y7e-dSKLrLwrgx7_w@mail.gmail.com>
To: Brad Kemper <brad.kemper@gmail.com>
Cc: Divya Manian <manian@adobe.com>, Andrew Fedoniouk <news@terrainformatica.com>, Lea Verou <leaverou@gmail.com>, "www-style@w3.org" <www-style@w3.org>
On Fri, Apr 13, 2012 at 10:18 AM, Brad Kemper <brad.kemper@gmail.com> wrote:
> On Apr 13, 2012, at 9:18 AM, "Tab Atkins Jr." <jackalmage@gmail.com> wrote:
>> Because attr() needs to have a specific type, and in that expression
>> the type is "string".  If attr() could return multiple types we can't
>> detect syntax errors with it.
>> Also, null isn't a CSS value. ^_^
> OK, but it could just make it invalid if the attribute didn't exist, couldn't it?

It *could*, but that would be annoying in the cases where you *do*
just want the default value if it doesn't exist.

>> (You could, of course, instead do "content: attr(title, none);".  The
>> default value doesn't need to be of the declared type.)
> And that is useful?

I don't understand the question.

Received on Friday, 13 April 2012 17:21:16 UTC

This archive was generated by hypermail 2.3.1 : Monday, 2 May 2016 14:38:57 UTC