On Tue, 16 Jan 2007 17:01:52 +0100, Dave Raggett <dsr@w3.org> wrote: >> On Tue, 16 Jan 2007 14:13:07 +0100, Dave Raggett <dsr@w3.org> wrote: >>> As a matter of interest, does the proposal cover the ability for web >>> page authors to define application specific CSS properties? >> >> No, as this would go against the CSS parsing rules. The CSSOM provides >> an API after parsing has been done and can't influence that process. > > Could you please expand on why a CSS parser can't use the CSS parsing > rules to identify the string value for new properties? > My understanding was that the underlying grammar was designed to give > CSS parsers the ability to identify and skip over properties > that they either didn't recognize or couldn't understand the value. > > Essentially the underlying CSS grammar is analogous to the notion of > welformed XML, it allows you to parse stuff that you haven't seen > before. That is important as it allows CSS interpreters to recover when > they come across features that were added after the interpreter was > shipped. > > I am merely asking for a way to provide web scripts with access to > the CSS extension mechanisms through a means to register new > properties together with the means to parse the values and construct > the corresponding results. I would be happy to provide a more detailed > proposal. I'm not saying this can't be done, I'm merely saying this can't be done in the CSSOM, which is what you seemed to request (initially). My apologies if I didn't comprehend the request. -- Anne van Kesteren <http://annevankesteren.nl/> <http://www.opera.com/>Received on Tuesday, 16 January 2007 16:05:38 GMT
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