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Re: Notes from our WebIDL + ES5 phone chat today...

From: Cameron McCormack <cam@mcc.id.au>
Date: Mon, 5 Oct 2009 00:54:19 -0700
To: Garrett Smith <dhtmlkitchen@gmail.com>
Cc: Travis Leithead <travil@microsoft.com>, Allen Wirfs-Brock <Allen.Wirfs-Brock@microsoft.com>, "Mark S. Miller" <erights@google.com>, Doug Schepers <schepers@w3.org>, "public-script-coord@w3.org" <public-script-coord@w3.org>
Message-ID: <20091005075419.GC11626@wok.mcc.id.au>
Garrett Smith:
> > CM: users would like the ability to override a mixin in once place (e.g.,
> > EventTarget)
> What does this mean?

Being able to do

  EventTarget.prototype.addEventListener = …

instead of doing it on every mixin prototype object, which is how it
would need to be done as currently specified.

> > TL: IE8 spread the mixins out over the affected objects (duplicating their
> > definitions)
> What does this mean?

If IDL said

  interface Base { };
  interface Mixin { void f(); };
  interface DerivedOne : Base, Mixin { };
  interface DerivedTwo : Base, Mixin { };

then a property named 'f' would exist in a DerivedOne instance’s
prototype chain somewhere, and a separate one would exist in a
DerivedTwo instance’s, as far as I understood it.  I don’t remember if
it was mentioned where specifically those properties go.

Cameron McCormack ≝ http://mcc.id.au/
Received on Monday, 5 October 2009 07:55:00 UTC

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