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Re: [whatwg] focus change inside keypress event handler

From: Doug Schepers <schepers@w3.org>
Date: Fri, 30 Oct 2009 00:34:14 -0400
Message-ID: <4AEA6CC6.7000709@w3.org>
To: www-dom@w3.org
CC: whatwg@whatwg.org
Hi, Folks-

Scott González wrote (on 10/29/09 11:03 AM):
> On Thu, Oct 29, 2009 at 9:20 AM, Michael A. Puls II
> <shadow2531@gmail.com <mailto:shadow2531@gmail.com>> wrote:
>
>     Safari and Firefox will allow focus() inside the handler to decide
>     where the character gets inserted, but only with "keydown". With
>     "keypress" (and textInput in webkit) in Firefox and Safari, it
>     appears that the char was already inserted right after keydown, so a
>     focus() change is already too late. Despite that though,
>     preventDefault() still works in Firefox and Safari inside a
>     "keypress" handler to prevent the char from being inserted. So, I'm
>     not exactly sure what's they're doing behind the scenes.
>
>
> DOM Level 3 Events says "The default action of the keypress event
> depends upon the key and the context: if the key is associated with a
> character, and if there currently focused element in the document can
> receive text (such as a form input or an editable text block), the
> default action is to dispatch a textInput event with the character as
> the value of the TextEvent.data attribute"
>
> The default action of a keypress is not to insert a character in the
> element that has focus, but to insert a character on the element that
> represents the context of the keypress. In the given example, the
> keypress's context is the first field, not the second.

Correct.


> I agree though
> that the documentation could be clearer about this as it's not
> explicitly stated.

Yes, more clarification for focus and for key events is in the works for 
DOM3 Events... this thread has a bunch of great data and questions, 
thank you.  I expect that HTML5 will probably also say something about this.

Regards-
-Doug
Received on Friday, 30 October 2009 04:34:25 GMT

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