Benjamin Hawkes-Lewis ha scritto:
Calogero Alex Baldacchino wrote:
I know, and agree with the basic reasons; however I think that
deriving an SGML version (i.e. by adding new entities and elements, as
needed, to an html 4 dtd) should not be very difficoult, and could be
worth the effort (i.e. to graceful degrade the presentation of a menu
element thought as a context menu, wich content should not be shown
untill a right click happens - if the u.a. cannot handle it, not
showing it at all could be a reasonable behaviour). The derived sgml
version should be aimed just for older browsers, while "newer", html
5-aware ones should just ignore any dtd reference. I'd consider this
chance, at least on the fly - I suspect that the complete break out
with the earlier sgml specifications might carry in an undesireable
side-effect: from one side it solves the problems arised from sgml
partial support/bad implementation and from browser-specific quirks,
but from the other side no mechanism is provided to make
sgml-somehow-based user agents to gain whatever awareness on the newly
defined elements.
What "SGML-somehow-based user agents"? While many web browsers switch
behavior based on what they detect in the first characters of an HTML
document (including the doctype declaration), there are no (or at any
rate, no remotely /popular/ web browsers) that read text/html DTDs in
the way required for this idea to be workable.
Since all you're proposing is to bake implied STYLE values into the DTD,
it seems to me your use-case could be served by making an HTML5
"foundation" stylesheet publicly available.
Compare:
http://meyerweb.com/eric/thoughts/2007/05/01/reset-reloaded/
http://developer.yahoo.com/yui/base/
--
Benjamin Hawkes-Lewis
Oh, I thought (and hoped) a somewhat basic support were provided... I
understand I was wrong...
The "foundation" style sheet may be at least a partial solution, but if
the browser is not aware of an element, I guess its style could not
apply at all. Anyway, a standard default style sheet could be desireable
both to have a standard basic layout on all browsers (as far as
possible, because of possible differences in CSS compliance) and as a
potential aid for assistive UAs, since the default sheet could cover a
few basic aureal properties.
Regards,
Alex
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