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Re: [webcomponents] Template element parser changes => Proposal for adding DocumentFragment.innerHTML

From: Ian Hickson <ian@hixie.ch>
Date: Wed, 9 May 2012 17:01:42 +0000 (UTC)
To: Henri Sivonen <hsivonen@iki.fi>
cc: Rafael Weinstein <rafaelw@google.com>, Webapps WG <public-webapps@w3.org>, Yehuda Katz <wycats@gmail.com>
Message-ID: <Pine.LNX.4.64.1205091655470.9926@ps20323.dreamhostps.com>

Quick alternative proposal that might work for both <template> parsing and 

   Have createDocumentFragment() take as an argument a context element. 
   Maybe also make it a mutable attribute of the object. Defaults to its 
   owner document's body element or root element or some such. Null means 
   no root element.

     var df = document.createDocumentFragment(document.body);
     df.contextElement = document.createElement('style');

   Have innerHTML use that as the context element to the fragment parsing 

     df.innerHTML = 'p::before { content: '<hello> <world>'; }';

   Have <template> take an argument that's the element tag name for it to 
   use to create its context element. Defaults to <body>.
     <template context="tr"> <td> </template>
     <template context="svg"> <g/> </template>

   Parse <template> by creating a new Document object that's like the ones 
   you get from createDocument() (i.e. "dead"), and then creating a 
   DocumentFragment owned by that Document, and then pushing that 
   DocumentFragment onto the stack instead of the <template> element, but 
   set up to act like the <template> element for the purposes of being 
   popped off. (Except when parsing without a browsing context, then you 
   just parse normally.)

Not sure how solid this is, but it's an idea at least. Hopefully an 
original one, though I'm sure y'all have considered it before. :-)

Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'
Received on Wednesday, 9 May 2012 17:02:29 UTC

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