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RE: [css3-transitions] In transition-property: all, <property>, is <property> a duplicate ?

From: Sylvain Galineau <sylvaing@microsoft.com>
Date: Wed, 27 Oct 2010 20:33:37 +0000
To: Chris Marrin <cmarrin@apple.com>, "L. David Baron" <dbaron@dbaron.org>
CC: www-style list <www-style@w3.org>
Message-ID: <045A765940533D4CA4933A4A7E32597E28783D77@TK5EX14MBXC115.redmond.corp.microsoft.com>
> From: Chris Marrin [mailto:cmarrin@apple.com]
> Sent: Wednesday, October 27, 2010 1:30 PM
> To: L. David Baron
> Cc: Sylvain Galineau; www-style list
> Subject: Re: [css3-transitions] In transition-property: all, <property>,
> is <property> a duplicate ?
> 
> 
> On Oct 27, 2010, at 1:21 PM, L. David Baron wrote:
> 
> > On Wednesday 2010-10-27 13:17 -0700, Chris Marrin wrote:
> >> I agree. Seems like the better syntax would be:
> >>
> >> 	[ none | all | IDENT ] [ none | all | IDENT ]*
> >>
> >> Does that look right?
> >
> > If you add a comma, yes.
> 
> Oops, my bad:
> 
> 	[ none | all | IDENT ] [ ',' none | all | IDENT ]*
> 
> >
> >> If so, then the rule would be that a 'none' in the list would turn
> >> off transitions on all properties. The corresponding duration
> >> would be ignored. An 'all' would turn transitions on for all
> >> properties and would set their duration to the corresponding one.
> >> Specific property names later in the list would override these.
> >> That seems like the most logical rule to me.
> >
> > Are you're saying you'd want an occurrence of 'none' to override
> > values earlier/later in the list, or just that 'none' would trigger
> > transitions on no properties (and thus cause an item in the
> > duration/timing-function/delay lists to be skipped)?
> 
> I mean that if you were to say:
> 
> 	transition-property: width, none, height;
> 	transition-duration: 1s, 1000000s, 2s;
> 
> you'd get a transition just on height and it would occur over 2s.
> Similarly, if you say:
> 
> 	transition-property: width, none, all, height;
> 	transition-duration: 1s, 2s, 3s, 4s;
> 
> you'd get a transition of 3s on all properties except height, which
> would transition over 4s.
> 
That is my expectation as well i.e. none/all override all the transitions
that come before them in the property list. Subsequent properties can
then declare expections to none/all. 

And if you have 'none,none' or 'all,all', normal dupe handling also
happens so the last one wins.
Received on Wednesday, 27 October 2010 20:34:15 GMT

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