Currently the set<PlugIn>Callbacks do only set a single callback. In cases
where multiple instances (like e.g. in an frame or iframe based site or simply
if an event is supposed to be distributed to multiple listeners) the API is
still limited to a single callback.
We need to extend that to support multiple listeners per event. We need to take
care that the existing mechanism is kept due to upward compatibility and add
the new mechanism and mark the old one as deprecated to be removed later.
We also need to introduc a check if callbacks do not exist anymore, because the
objects have been deleted and automatically remove the corresponding listeners
from the internal lists.
Original issue reported on code.google.com by fivefeetfurther@gmail.com on 7 Jun 2011 at 9:50
Original issue reported on code.google.com by
fivefeetfurther@gmail.comon 7 Jun 2011 at 9:50