Boris Zbarsky wrote:
The WebAPI WG would like to solicit feedback about Event Groups,
particularly from implementors. Do Event Groups fill a current need? Are
they implemented in your UA, or are you planning to do so? Are they
used by
authors in the wild?
Basically, are there compelling reasons to either keep them or to get
rid of
them?
The only event groups Gecko implements at the moment are the "normal"
and "system" event groups. The bubbling phase in the "system" event
group is when default actions take place. This can be used by authors
of XBL bindings, for example (and is). Note that none of this requires
actually exposing the system event group per se; there's just an XBL
syntax to add listeners in that group instead of the "normal" one.
Like Maciej points out, this is not the same thing as the event groups
in the DOM 3 Events spec.
/ Jonas
