[custom-elements] Invoking lifecycle callbacks before invoking author scripts from Ryosuke Niwa on 2016-02-23 (public-webapps@w3.org from January to March 2016)

From: Ryosuke Niwa <rniwa@apple.com>
Date: Mon, 22 Feb 2016 20:26:41 -0800
To: public-webapps WG <public-webapps@w3.org>
Message-id: <DF4D8A33-8AA3-4538-A62F-DA8534793552@apple.com>

Hi,

We propose to change the lifecycle callback to be fired both before invoking author scripts (e.g. for dispatching events) and before returning to author scripts.

Without this change, event listeners that call custom elements' methods would end up seeing inconsistent states during compound DOM operation such as Range.extractContents and editing operations, and we would like to avoid that as much as possible.

- R. Niwa

Received on Tuesday, 23 February 2016 04:27:11 UTC