Re: [xml-dev] SGML complexity

[<juanrgonzaleza@canonicalscience.com>]

Philippe Poulard said:
> juanrgonzaleza@canonicalscience.com wrote:
>>
>> That i said is that you cannot use XSLT (at least 1.0) for the menu in
>> the _final_ doc,  you _may_ use JS.
>>
>> Therefore here XSLT is lacking functionality. Is not?
>
> not at all : this is not a lack of functionality of XSLT, it is a lack
> of functionality of the navigator ;

So far as i know XSLT was designed to be a -programming- language for
static transformations:

[http://www.xml.com/pub/a/1999/05/xsl/xslconsidered_1.html?page=3].

Therefore, you cannot change the DOM in a full dinamical way as i can do
today with a JS linked to a (X)HTML doc. XSLT is lacking functionality
already available on JS, PHP, ASP, and the next.

Therein that a new approach is being launched. From
1.5. Relationship to XSLT on [http://www.w3.org/TR/xbl/]:

<blockquote>
XSLT operates on a static DOM, permanently replacing that DOM for
rendering. XBL, on the other hand, transparently transforms the DOM for
rendering while leaving the underlying structure intact, and dynamically
reflects changes to the underlying DOM in the transformed rendering.
</blockquote>

Probably up-down menus and other dinamical stuff in XML docs I can do via
PHP or JS -but cannot do with XSLT- will be easily done via future XBL. It
appears a promising approach, it is broadly supported by Mozilla and a
version of binding language for SVG (sXBL) is being defined.

> most navigators can invoke
> javascript functions, but they can't invoke XSLT
> http://www.w3.org/TR/html4/interact/scripts.html
>
> it would be possible, perhaps with something like this :
> <META http-equiv="Content-Script-Type" content="text/xslt">
> ...
> <a id="topPrimaryMenu1" ... onmouseover="&lt;xsl:call-template
> name='openMenu'&gt;&lt;xsl:with-param name='doc'
> select='$document'/&gt;&lt;xsl:with-param name='itsId'
> select='&amp;quot;navigationZone1&amp;quot;'/&gt;&lt;/xsl:call-template&gt;">
> the template would just copy the entire entry except the element which
> ID is 'navigationZone1' that would be retemplated with the output style
> expected
> of course, a navigator should supply means to bind the XSLT namespace to
>  xsl (by using the usual xmlns declaration) and to bind $document to the
>  DOM document (just like it does for javascript with many objects)
>
> but it would be somewhat useless :
> -as XSLT can be already invoked from javascript
> -the escape sequence is somewhat ugly
>
> --
> Cordialement,
>
>                ///
>               (. .)
>   --------ooO--(_)--Ooo--------
> |      Philippe Poulard       |
>   -----------------------------
>   http://reflex.gforge.inria.fr/
>         Have the RefleX !


Juan R.

Center for CANONICAL |SCIENCE)