On 1/9/07, Cyril Concolato <[EMAIL PROTECTED]> wrote:
As far as I can tell, the statement in the XBL spec is the same as in the
SVG spec.
The second sentence is wrong for SVG documents. The SVG specification
explains the opposite in
http://www.w3.org/TR/SVGMobile12/linking.html#externalReferences.
"The conceptual model is that each resource document is loaded only once;
if the same resource document is referenced multiple times directly or
indirectly by the same primary document, that resource document is only
retrieved and processed one time."
That's not the opposite of what XBL says. That's exactly what XBL
says. Unless I made a mistake in the XBL spec, at any rate. Which is
the sentence in the XBL spec that disagrees with this?
Actually, I think I was wrong when I asked that. I'll explain why. The term
"already been loaded" appears three times in the specification and every
time about "binding documents". This is correct because the XBL spec cannot
specify how resources are handled (shared or not) by other languages. So I
would propose to not use the word 'resource' but instead use 'binding
document' in that whole section and remove the sentence "Such resource
sharing must be limited to resources loaded by a document, its binding
documents, its scripts, and its style sheets."
Mostly changed. I left the sentence you wanted to remove because it's
important to note the scope of the sharing.
The specification says: "For example, if a document uses a binding
document, and its style sheets use that binding document, the same binding
document instance will be used for both cases. However, if that document
contains an iframe whose document uses the same binding document, a new
instance will be used: the binding document instance from the outer document
is not reused."
Right, that's because the two documents there are both (in SVG terms)
"primary documents".
So in the general case (used in style sheets, referenced with PI, ...) the
Document is reused but when it is referenced inside an iframe it is not.
That looks like an exception. But I may understand that you mean that when a
presentation is made of multiple documents being rendered independently
(like in Compound Document by Reference (html:iframe, svg:foreignObject,
html:object)), then they do not share the same set of bindings. Am I correct
?
Yes, I think so.
--
Ian Hickson
