Re: [webcomponents] Inheritance in Custom Elements (Was Proposal for Cross Origin Use Case and Declarative Syntax)

On Tue, Dec 10, 2013 at 3:54 PM, Boris Zbarsky <> wrote:
> On 12/10/13 10:34 AM, Anne van Kesteren wrote:
>> E.g. the <dialog>'s close() method won't work as defined
>> right now on a subclass of HTMLDialogElement.
> Why not?
> I assumed that actual ES6 subclassing, complete with invoking the right
> superclass @@create, would in fact produce an object for which this would
> work correctly.  At least any situation that doesn't lead to that is a
> UA/spec bug.

Well for one because the specification at the moment talks about a
<dialog> element and does not consider the case where it may have been
subclassed. The "pending dialog stack" is also for <dialog> elements
only, not exposed in any way, etc. The way the platform is set up at
the moment is very defensive and not very extensible.


Received on Tuesday, 10 December 2013 16:01:06 UTC