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Re: [SVGMobile12] script element processing

From: Robin Berjon <robin.berjon@expway.fr>
Date: Fri, 21 Jul 2006 13:24:47 +0200
Message-Id: <836ACDDE-C152-41A9-8B77-29212838CFCF@expway.fr>
Cc: www-svg <www-svg@w3.org>
To: Anne van Kesteren <annevk@opera.com>

Hi Anne,

> How could it ever get brackets? Those are _elements_ not brackets.
> Brackets are encoded like &lt; or whatever or are inside some CDATA
> section. I'm asking about getting the text value within a script  
> element.

It doesn't "get brackets" as such, I believe that was metaphorical.  
What happens is this:

  - If the type (coming from the type attribute, the  
contentScriptType attribute, or the default) is unknown, then the  
content is not processed as executable content (effectively being  
ignored for all matters scripting).
  - If the type is an XML media type, the subtree isn't touched and  
is passed as is to the script engine (presumably script engines for  
XML languages can accept being passed a DOM or something, but that's  
a detail internal to the UA anyway).
  - Otherwise, the following pre-processing is done to obtain the  
content that is passed to the script engine:
    . all element children of the executable element are removed
    . the textContent of the executable element is passed on to the  
script engine

The reason we chose to reference textContent instead of using  
language similar to that of the XBL draft is because the latter has a  
few issues, notably in that it's not yet entirely idiot-proof in its  
definition of text content, and also because as currently written it  
appears to exclude EntityReference nodes that may be in the DOM,  
which is a bug (I know that's a contrived example, but we have to  
deal with it). In trying to patch it up to be as tight as we wanted  
it to be, we noticed that all we were doing was repeat the definition  
of textContent. So we went with referencing that instead.

Thank you very much for your comments, please let us know shortly if  
this does not address your concerns.

-- 
Robin Berjon
    Senior Research Scientist
    Expway, http://expway.com/
Received on Friday, 21 July 2006 11:24:57 GMT

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