- From: Jonas Sicking <jonas@sicking.cc>
- Date: Tue, 10 Mar 2009 18:01:03 -0700
- To: Jonas Sicking <jonas@sicking.cc>, Doug Schepers <schepers@w3.org>, public-html@w3.org, www-svg <www-svg@w3.org>
On Tue, Mar 10, 2009 at 4:20 PM, Cameron McCormack <cam@mcc.id.au> wrote: > Doug Schepers: >> > Along not-entirely-unrelated lines, the SVG WG is currently looking at >> > aligning SVG script handling with that of HTML. Feedback on this topic is >> > most welcome. > > Jonas Sicking: >> This is amazing news. It would be great if authors didn't have to use >> different rules for composing <script>s inside the SVG parts vs. the >> HTML parts of a single document. >> >> I think the best thing we can do for this is to ensure that developers >> have access to tools that provide proper XML serialization of an SVG >> fragment. This would take care of casing things properly, nesting >> tags correctly, quoting attributes and wrapping the contents of >> <script>s in <!CDATA[]]>. We already have code in gecko to do this, >> I would imagine most other UAs do to as it is required to implement >> XMLHttpRequest. > > How about being able to right click on an SVG fragment in a text/html > document (or even an XHTML document) and choosing “Save image as…” to > save it out as XML? That sounds like a good idea. >> 3. >> What to do with <![CDATA[]]>. If we do parse as <script> as CDATA >> (rather than PCDATA) that means that existing XML-SVG like >> >> <script> >> <![CDATA[ >> alert('hello world'); >> ]]> >> </script> >> >> would lead to the "<![CDATA[" and "]]>" being treated as part of the >> javascript, and result in a JS parse error. I think we can solve this >> by allowing the element to strip a heading "<![CDATA[" and trailing >> "]]>", if they exist, before sending anything to the JS >> implementation. I don't have a strong opinion on if this should be >> allowed for both SVG-script and HTML-script, or just the former. >> Consistency is always nice of course. > > The commented-out proposal in HTML 5 at the moment does handle CDATA > sections explicitly, and turns them into Text nodes in the DOM. This > handling works for CDATA sections appearing anywhere in foreign content. > I think this is useful, and not problematic. > > I agree about the consistency: I wonder if there would be any problems > in allowing CDATA sections in HTML content? I haven't looked at how the commented out proposal currently handles SVG <script> elements. However I do think they should be handled as similar as possible, ideally identical. I would really like to explore allowing <![CDATA[]]> in HTML. Not sure if we could allow it inside <script>s though, but it's something to look into. > Should <svg:script> also support the async and defer attributes? I think that would be ideal. I think the advantages it brings to HTML would benefit SVG just as much. Both in text/html and in image/svg+xml / Jonas
Received on Wednesday, 11 March 2009 01:01:43 UTC