RE: Advantage of XML based GUI? (was Re: Ada-inspired OS/Language)

["Robert C. Leif" <rleif@rleif.com>]

One advantage of the two XML rendering languages, XSL and SVG, is that
their output could be used as the input to the printer or display device
driver or the XML rendering could be converted to some standard graphics
form such as Postscript or the HP printer language. The disadvantage is
that the two languages have neither a parent-child or sibling
relationship. 
XSL including its FO rendering methods is available from Apache. It is
written in Java. Unfortunately, my reading of their newsgroup indicates
the virtues of Ada. SVG is available from Adobe. Unfortunately, SVG is
described by DTDs, which are at least well written DTDs.
The next version of SVG, "Scalable Vector Graphics (SVG) 1.1
Specification
W3C Candidate Recommendation 30 April 2002" Includes both an IDL and a
Java binding. I believe that the IDL could be machine translated using
the technology for the Ada CORBA bindings. The DTD is really a group of
modular DTDs, which need some sort of a header in order to be translated
by XMLSpy into schemas.
Bob Leif
-----Original Message-----
From: comp.lang.ada-admin@ada.eu.org
[mailto:comp.lang.ada-admin@ada.eu.org] On Behalf Of Larry Kilgallen
Sent: Thursday, September 12, 2002 10:23 AM
To: comp.lang.ada@ada.eu.org
Subject: Re: Advantage of XML based GUI? (was Re: Ada-inspired
OS/Language)

In article <3d80b566.992395741@news.cis.dfn.de>,
nickroberts@blueyonder.co.uk (Nick Roberts) writes:

> Currently, I plan to write 'native' device drivers (in Ada) for AdaOS.
I
> intend to go to the original hardware documentation wherever posisble,
and
> write the drivers properly. I don't think it's unfair to suggest that
most
> device drivers (even commercial ones) tend be of remarkably poor
quality.
> 
> Nevertheless, it would be really handy to provide compatibility layers
that
> would allow existing device drivers to be used. At some stage, maybe
we
> will have a go at this.

Existing device drivers that follow what model ?

Certainly that is fundamental to the design of the "native" device
driver system.  Unless you design it from the start, for instance,
it would be difficult to deliver ASTs.