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Re: WebApps-ISSUE-178 (empty string and null event types): Implementations and DOM Core allow empty string and null event types [DOM3 Events]

From: Jonas Sicking <jonas@sicking.cc>
Date: Tue, 10 May 2011 00:53:36 -0700
Message-ID: <BANLkTinqKyBDzN_02HXxDK7FtifBy4hAQg@mail.gmail.com>
To: Jacob Rossi <Jacob.Rossi@microsoft.com>
Cc: "www-dom@w3.org" <www-dom@w3.org>, "annevk@opera.com" <annevk@opera.com>
On Monday, May 9, 2011, Jacob Rossi <Jacob.Rossi@microsoft.com> wrote:
> Hi folks,
> In recognition that implementations support null and empty string event types and that DOM Core allows this, we accepted the change to D3E to remove this restriction. I have removed the spec text in the exceptions section which required
>  an exception be thrown in these cases.

Hmm. I only vaguely remember the tail end of this discussion, but
wasn't the conclusion that it was better to let empty string signify
an uninitialized event? Thus making empty string a not allowed name.

The alternative is to force the event to hold some hidden state which
indicates if it has been initialized or not. This is worse both from
an implementation complexity aspect, as well as removes the ability
for pages to check if an event has been initialized (I don't have any
use cases for the latter, but it's a nice free bonus)

/ Jonas
Received on Tuesday, 10 May 2011 07:54:03 UTC

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