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XForms WD 20020821 - 2.1 XForms and XHTML etc

From: <AndrewWatt2001@aol.com>
Date: Thu, 29 Aug 2002 07:36:09 EDT
Message-ID: <ea.2cf169e8.2a9f6129@aol.com>
To: www-forms@w3.org, www-forms-editor@w3.org, xforms@yahoogroups.com

In Chapter 2.1, it is stated (without further explanation):

"This can be represented in the XForms model element, which in XHTML would be 
contained within the head element".

It seems to me that this is not a statement that can be made without 
qualification. It is not, as far as I am aware, true for XHTML 1.0. Therefore 
I suggest that consideration be given to adding a version number to the 
statement.

In addition, as far as I can see, there is nothing in the initial XHTML 2.0 
WD which constrains the xforms:model element to being present nested in the 
XHTML head element. Is there anything to prevent the xforms:model element 
being present in the body element but simply not be rendered?

Did I miss something? Or is the XForms WD making an assumption that may not 
necessarily be true? If it is merely an assumption then some redrafting might 
be in order.

It also raised, for me at least, an issue which I hadn't considered in detail 
before. This is partly because I had focussed on using XForms on a single 
platform as I tried to get to grips with the detail of XForms.

How is a cross-platform XForms document to be written? 

If the XForms code for the XHTML desktop platform is to be separated (as the 
text quoted above suggests) into the xforms:model in the head element and the 
XForms form controls in the body element how is that to be adapted for, for 
example, use in an SVG and XForms Profile or for embedding in WML or other 
languages to be used on various mobile platforms.

I had naively assumed that XForms would be "write once, run everywhere" but 
if we are to carve up the XForms model and form controls according to (ill 
defined?) demands of host languages it seems that there will be a lot of 
rewriting and tweaking of XForms code to be done.

Is there a mechanism which I am overlooking which will allow modular XForms 
code to be re-used as is across platforms?

Am I missing something obvious here, which is always possible? Or is creation 
of cross-platform XForms code going to be less transparent than I had 
(naively?) assumed?

Andrew Watt
Received on Thursday, 29 August 2002 07:36:43 GMT

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