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HTML5 dependencies on DOM3 Events

From: Ian Hickson <ian@hixie.ch>
Date: Mon, 1 Jun 2009 23:37:33 +0000 (UTC)
To: www-dom@w3.org
Message-ID: <Pine.LNX.4.62.0906012325101.19521@hixie.dreamhostps.com>

HTML5 has the following dependencies on DOM3 Events:

* Mutation events
  There are a number of parts of HTML5 where what HTML5 should say depends 
  on what happens with mutation events in DOM3 Events. (My preference 
  would be for mutation events to be either replaced wholesale or made 
  asynchronous, so that they are queued on the event loop instead of being 
  fired as the changes happen, since the latter can result in serious 
  complexities and makes it very hard to maintain invariants during the 
  execution of algorithms.)


* Window object interaction
  Browsers do weird things with the Window object. I believe this is all 
  defined in HTML5 now, but it would be nice to have hooks in DOM3 Events 
  that mean I can just say something like "The Window object is a event 
  dispatch tree root" or whatever and have it just work.

     http://www.whatwg.org/specs/web-apps/current-work/#events-and-the-window-object

  (Note that there is complexity around 'load' events here; some 'load' 
  events are exempted from the Window object.)


* Defining when user interaction events actually fire
  There is currently no spec that defines when events like 'click' and 
  'keydown' and so on actually fire. (There are some constraints defined 
  on those events, but no actual requirement that they fire.) I expect 
  this would be a separate spec than DOM3 Events, but it is pretty 
  important and would help in making HTML5 self-consistent. Right now I've 
  mostly just guessed at what such a spec would say and tried to keep 
  within such boundaries (e.g. in the definition of Interactive Content).

     http://www.whatwg.org/specs/web-apps/current-work/#interactive-content

HTH,
-- 
Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'
Received on Monday, 1 June 2009 23:57:48 GMT

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