[pointerevents] Should pointer IDs be unique even across different top-level browsing contexts?

RByers has just created a new issue for 
https://github.com/w3c/pointerevents:

== Should pointer IDs be unique even across different top-level 
browsing contexts? ==
In Edge the pointer ID is provided by the OS and so is global across 
the entire system.  In #52 we agreed to require the ID to be unique 
the top-level browsing context, but it's possible an application could
 depend on it being unique even across different top-level browsing 
contexts.  Eg. two instances of an app (in different windows) could 
maybe be communicating via a server and supporting drag-and-drop / 
pointer-handoff between them.  This would be hard to spec, and 
possibly impossible to implement in some OSes.  To what extent to we 
think this might matter for interop and useful functionality?

@teddink said he'd look into what exactly is possible on Windows 
today.  Eg. when dragging from one window to another, is the 
consistency of pointer IDs observable?

Please view or discuss this issue at 
https://github.com/w3c/pointerevents/issues/59 using your GitHub 
account

Received on Friday, 29 April 2016 17:42:47 UTC