Re: [PATCH] Add user content APIs for WebKit Xwidgets

[Qiantan Hong]

>> Currently, I store the ALIST of handlers on xwidget-plist.  If we're
>> going to have it for groups of related Xwidgets, what is the best
>> place to store it? On the xwidget-plist of the head xwidget?
> 
> In a C data structure (not the plist!) attached to the "head" xwidget.
> It does not have to be accessible to Lisp.
> 
>> Or we should add another slot and provide xwidget-group-plist and
>> set-xwidget-group-plist, which will only have non-NULL value on the
>> head xwidget and is migrated automatically?
> 
> What slot?
> 
> I don't think it has to be exposed to Lisp at all.  It's just an
> implementation detail, after all.

Sure. In that case, would it be appropriate for the script_message_cb
to call the handler directly? Or should it emit an event and let
xwidget-webkit-callback call it on Lisp side? I'm not sure how well
does the former approach (which is more direct) interact with error
handling/Lisp debugger.