Update of /cvsroot/pydispatcher/dispatch/examples
In directory sc8-pr-cvs1:/tmp/cvs-serv13076
Added Files:
simple_sample.py
Log Message:
Added a simple sample usage script. Could use considerably more of this kind of thing. Could probably use more documentation in this particular script as well.
--- NEW FILE: simple_sample.py ---
from dispatch import dispatcher
def doSomethingUseful( table, signal, sender ):
"""Sample method to receive signals"""
print ' doSomethingUseful', repr(table), signal, sender
def doSomethingElse( signal, **named ):
"""Sample method to receive signals
This method demonstrates the use of the **named
parameter, which allows a method to receive all
remaining parameters from the send call.
"""
print ' doSomethingElse', named
def doDefault( ):
"""Sample method to receive All signals
Note that this function will be registered for all
signals from a given object. It does not have the
same interface as any of the other functions
registered for those signals. The system will
automatically determine the appropriate calling
signature for the function.
"""
print ' doDefault (no arguments)'
class Node(object):
"""Sample object to send signals, note lack of dispatcher-aware code"""
def __init__( self, name="an object" ):
self.name = name
def __repr__( self ):
return "%s( %r )"%( self.__class__.__name__, self.name )
DO_LOTS = 0
DO_SOMETHING = ('THIS','IS','A','MORE','COMPLEX','SIGNAL')
DO_SOMETHING_ELSE = Node()
ourObjects = [
Node(),
Node(),
Node(),
]
# Establish some "routing" connections
dispatcher.connect (
doSomethingUseful,
signal = DO_LOTS,
sender = ourObjects[0],
)
dispatcher.connect (
doSomethingElse,
signal = DO_SOMETHING,
sender = ourObjects[0],
)
dispatcher.connect(
doDefault,
signal = dispatcher.Any, # this is actually the default,
sender = ourObjects[0],
)
print "Sending DO_LOTS to first object"
dispatcher.send(
signal = DO_LOTS,
sender = ourObjects[0],
table = "Table Argument",
)
print "Sending DO_SOMETHING to first object"
dispatcher.send(
signal = DO_SOMETHING,
sender = ourObjects[0],
table = "Table Argument",
)
print "Sending DO_SOMETHING_ELSE to first object"
dispatcher.send(
signal = DO_SOMETHING_ELSE,
sender = ourObjects[0],
table = "Table Argument",
)
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