kÿa tdZddgZGddeZGddeZdZedkr edSdS)a Dirt Simple Events A Dispatcher (or a subclass of Dispatcher) stores event handlers that are 'fired' simple event objects when interesting things happen. Create a dispatcher: >>> d = Dispatcher() Now create a handler for the event and subscribe it to the dispatcher to handle Event events. A handler is a simple function or method that accepts the event as an argument: >>> def handler1(event): print(repr(event)) >>> d.subscribe(Event, handler1) # doctest: +ELLIPSIS Now dispatch a new event into the dispatcher, and see handler1 get fired: >>> d.dispatch(Event(foo='bar', data='yours', used_by='the event handlers')) Event DispatcherceZdZdZdZdZdS)ra An event is a container for attributes. The source of an event creates this object, or a subclass, gives it any kind of data that the events handlers need to handle the event, and then calls notify(event). The target of an event registers a function to handle the event it is interested with subscribe(). When a sources calls notify(event), each subscriber to that event will be called in no particular order. c :|j|dSN)__dict__update)selfkws //usr/lib/python3/dist-packages/rdflib/events.py__init__zEvent.__init__*s R     cnt|j}dd|DdS)Nzz"Event.__repr__../s-?-?-?Aa-?-?-?r >)sortedrkeys)r attrss r __repr__zEvent.__repr__-s<t}))++,,-?-?-?-?-?-?-?AAr N)__name__ __module__ __qualname____doc__r rrr r rrsA  !!!BBBBBr c.eZdZdZdZdZdZdZdZdS)rz] An object that can dispatch events to a privately managed group of subscribers. Nc||_|Sr _dispatch_map)r amaps r set_mapzDispatcher.set_map:s! r c|jSrr)r s r get_mapzDispatcher.get_map>s !!r c|j|i|j|d}||g}n||||j|<|S)zuSubscribe the given handler to an event_type. Handlers are called in the order they are subscribed. N)r r"getappend)r event_typehandlerlsts r subscribezDispatcher.subscribeAsi   % LL    $$Z66 ;)CC JJw   ),:& r c|jY|jt|d}|tdt|z|D]}||dSdS)zPDispatch the given event to the subscribed handlers for the event's typeNzunknown event type: %s)r r&type ValueError)r eventr*l_s r dispatchzDispatcher.dispatchOsz   )$((ed;;C{ !9DKK!GHHH  5 * )  r ) rrrrr r"r$r+r1rr r rr2sa M"""   r c6ddl}|dS)N)doctesttestmod)r4s r testr6Zs!NNN OOr __main__N)r__all__objectrrr6rrr r r:s 2 L !BBBBBFBBB*%%%%%%%%P  zDFFFFFr