[whatwg] Re: media types

Ian Hickson ian at hixie.ch
Sat Aug 21 16:56:29 PDT 2004

On Mon, 26 Jul 2004, Mark Schenk wrote:
> Basically I want to be able to have some scripts associated with certain 
> media types. For instance, I would like some scripts to *only* work in 
> projection, or *only* in handheld.

Note that (CSS-driven) XBL is probably the long term solution here.

> So basically there would probably be only media type active at the same 
> time. However, there is a big problem when using a multimodal browser 
> [1] which allows different modes visual/aural(/tactile) at the same 
> time.
> Different mediatypes would be mutually exclusive within a mode, e.g. you 
> can't have screen and projection at the same time (they're in the same 
> mode), but you can have projection and speech, or handheld and speech at 
> the same time (they're in different modes).

At the moment the DOM doesn't support this kind of UA. There is only one 
View -- the defaultView, which in Web Apps is defined as being the same as 
the global window object -- and thus only one set of computed styles, and 
thus only one set of stylesheets that apply.

Frankly I would consider such a UA to be non-compliant if it used the 
same window object for both rendering modes.

Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'

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