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RE: pictures

From: Dave Raggett <dsr@w3.org>
Date: Fri, 21 Apr 2000 15:16:01 +0100 (GMT Daylight Time)
To: Joe Hewitt <joe@joehewitt.com>
cc: www-forms@w3.org
Message-ID: <Pine.WNT.4.10.10004211508240.-483837@hazel.hpl.hp.com>
On Thu, 20 Apr 2000, Joe Hewitt wrote:

> > A variation of this capability shows up in the XForms working
> > draft [1] as
> > 'mask' and 'pattern' facets on the string type.
> 
> Right, but a pattern is not a picture because it's not a fixed
> format, and as of now mask is only specified on the string type.  
> I assume you plan to add mask to all data types and expand the
> vocabulary, perhaps to the level of flexibility defined in the
> XFA document.

We haven't discussed do this to date. Can you provide some examples
where it would be particularly useful?

> Also, mask seems to be only for validation purposes (as of now).  
> There need to be a flag which which specifies whether the mask
> is for validating input, or formatting output.  It can't be both
> because if you're using the mask to format, it's always goign to
> output something valid.

The data model is about validation and not about presentation. The
model-view-controller paradigm will allow the presentation format to
be different from the internal representation as described by the
data model. The work on the user interface is still at a very early
stage, though.

Regards,

-- Dave Raggett <dsr@w3.org> http://www.w3.org/People/Raggett
tel/fax: +44 122 578 3011 (or 2521) +44 778 532 0444 (mobile)
World Wide Web Consortium (on assignment from HP Labs)
Received on Friday, 21 April 2000 10:16:12 GMT

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