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Re: [SVGMobile12] Comments: Introduction

From: Craig Northway <craign@cisra.canon.com.au>
Date: Wed, 08 Jun 2005 11:25:14 +1000
Message-ID: <42A648FA.9000204@cisra.canon.com.au>
To: Boris Zbarsky <bzbarsky@MIT.EDU>
Cc: w3c-svg-wg@w3.org, www-svg@w3.org

Hi Boris,

Boris Zbarsky wrote:

>
> Craig Northway wrote:
> >
> >    current SVG document fragment
> >    The current SVG document fragment of a element is the XML document
> >    sub-tree which starts with the ancestor 'svg'
> >    <cid:part1.06080305.01090602@cisra.canon.com.au> element. For this
> >    to be a valid current SVG document fragement all container elements
> >    between the 'svg' <cid:part1.06080305.01090602@cisra.canon.com.au>
> >    and this element must be elements in the SVG language and namespace.
> >
>
> That phrasing doesn't address my concern, which is that we clearly say 
> that there may be no current SVG document fragment for a given node 
> (and that all places which talk about current SVG document fragments 
> handle the case when there isn't one in some way, but I suspect that 
> already falls out of the general way rendering is speficied).  This 
> also has the same "starts with" problem as "SVG document fragment".
>
> Perhaps something like this:
>
> -------------------------------------
> current SVG document fragment
> The current SVG document fragment of an element is the XML document
> sub-tree such that:
>
> 1) The sub-tree has an 'svg' element as its root.
> 2) The sub-tree contains the element in question
> 3) All ancestors of the element in question in the sub-tree are 
> elements in the SVG language and namespace.
> -------------------------------------
>
> I couldn't figure out a way to express the three criteria in sentence 
> form without being very long-winded and hard to follow, but I see 
> nothing wong with listing them in a list like this...

I like that definition. Though there is currently some discussion on the 
WG mailing list about this, so we'll wait and see what happens there.

I'd modify it slightly like so:

current SVG document fragment
The current SVG document fragment of an element is the XML document
sub-tree such that:

1) The sub-tree is a valid SVG document fragment
2) The sub-tree contains the element in question
3) All ancestors of the element in question in the sub-tree are elements 
in the SVG language and namespace.
-------------------------------------

>
>
> To modify this definition for 1.2 Full, I believe all you'd have to do 
> is change condition (3) to:

To modify my version for 1.2 Full I can use the innermost SVG Document 
Fragment term which will be defined in SVG Full1.2 and add a condition:

The sub-tree is the innermost SVG document fragment of the element in 
question.

Anyhow we'll see how the WG discussion goes.

Thanks,
Craig
Received on Wednesday, 8 June 2005 01:25:18 GMT

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