Re: [pointerevents] Pointer Id across different iframes

Discussed [on the 
call](https://www.w3.org/2016/04/26-pointerevents-minutes.html#item04)
 today.

We agreed that the IDs should at least be consistent for a given 
top-level browsing context (tab) as this could be valuable in some 
scenarios.  @NavidZ is going to prepare a spec PR for this.

It's an open question whether it's worth trying to define consistency 
on a broader scope.  Eg. it's possible that some drag-between-windows 
scenario could communicate between pages (even via a server) to handle
 the input properly.  But it's not clear this is even possible today 
due to OS-level window input capturing.  @teddink said he'd 
investigate the behavior on Windows further (they do support 
cross-window HTML5 drag-and-drop events).  Also because Chrome and 
Firefox can't rely on the OS to provide unique IDs in the correct form
 (eg. on Linux) it may not be possible to implement a truly global ID 
mapping on all OSes (Edge gets this for free from Windows).

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Received on Tuesday, 26 April 2016 19:47:19 UTC