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- """Sender classes."""
-
-
- class _SENDER(type):
- """Base metaclass for sender classes."""
-
- def __str__(cls):
- return '<Sender: %s>' % (cls.__name__, )
-
-
- class Any(object):
- """Used to represent either 'any sender'.
-
- The Any class can be used with connect, disconnect, send, or
- sendExact to denote that the sender paramater should react to any
- sender, not just a particular sender.
- """
-
- __metaclass__ = _SENDER
-
-
- class Anonymous(object):
- """Singleton used to signal 'anonymous sender'.
-
- The Anonymous class is used to signal that the sender of a message
- is not specified (as distinct from being 'any sender').
- Registering callbacks for Anonymous will only receive messages
- sent without senders. Sending with anonymous will only send
- messages to those receivers registered for Any or Anonymous.
-
- Note: The default sender for connect is Any, while the default
- sender for send is Anonymous. This has the effect that if you do
- not specify any senders in either function then all messages are
- routed as though there was a single sender (Anonymous) being used
- everywhere.
- """
-
- __metaclass__ = _SENDER
-
-