def addCallable(self, callable):
"""Add a callable to list of callables for this topic node"""
try:
id = self.__callables.index(_getWeakRef(callable))
return self.__callables[id]
except ValueError:
wrCall = _getWeakRef(callable, _NodeCallback(self.__notifyDead))
self.__callables.append(wrCall)
return wrCall
def addCallable(self, callable):
"""Add a callable to list of callables for this topic node"""
try:
id = self.__callables.index(_getWeakRef(callable))
return self.__callables[id]
except ValueError:
wrCall = _getWeakRef(callable, _NodeCallback(self.__notifyDead))
self.__callables.append(wrCall)
return wrCall
def __init__(self):
self.__callbackDict = {}
self.__callbackDictCleanup = 0
# all child nodes will call our __rootNotifyDead method
# when one of their registered listeners dies
_TopicTreeNode.__init__(self, (ALL_TOPICS,),
_getWeakRef(self.__rootNotifyDead))
def hasCallable(self, callable):
"""Return true if callable in this node"""
try:
self.__callables.index(_getWeakRef(callable))
return True
except ValueError:
return False
def getTopics(self, listener):
"""Return the list of topics for given listener"""
weakNodes = self.__callbackDict.get(_getWeakRef(listener), [])
return [
weakNode().getPathname() for weakNode in weakNodes
if weakNode() is not None
]
def __init__(self):
self.__callbackDict = {}
self.__callbackDictCleanup = 0
# all child nodes will call our __rootNotifyDead method
# when one of their registered listeners dies
_TopicTreeNode.__init__(self, (ALL_TOPICS, ),
_getWeakRef(self.__rootNotifyDead))
def hasCallable(self, callable):
"""Return true if callable in this node"""
try:
self.__callables.index(_getWeakRef(callable))
return True
except ValueError:
return False
def removeCallable(self, callable):
"""Remove weak callable from our node (and return True).
Does nothing if not here (and returns False)."""
try:
self.__callables.remove(_getWeakRef(callable))
return True
except ValueError:
return False
def removeCallable(self, callable):
"""Remove weak callable from our node (and return True).
Does nothing if not here (and returns False)."""
try:
self.__callables.remove(_getWeakRef(callable))
return True
except ValueError:
return False
def isSubscribed(self, listener, topic=None):
"""Return true if listener is registered for topic specified.
If no topic specified, return true if subscribed to something.
Use topic=getStrAllTopics() to determine if a listener will receive
messages for all topics."""
weakCB = _getWeakRef(listener)
if topic is None:
return self.__callbackDict.has_key(weakCB)
else:
topicPath = _tupleize(topic)
for weakNode in self.__callbackDict[weakCB]:
if topicPath == weakNode().getPathname():
return True
return False
def isSubscribed(self, listener, topic=None):
"""Return true if listener is registered for topic specified.
If no topic specified, return true if subscribed to something.
Use topic=getStrAllTopics() to determine if a listener will receive
messages for all topics."""
weakCB = _getWeakRef(listener)
if topic is None:
return self.__callbackDict.has_key(weakCB)
else:
topicPath = _tupleize(topic)
for weakNode in self.__callbackDict[weakCB]:
if topicPath == weakNode().getPathname():
return True
return False
def unsubscribe(self, listener, topicList):
"""Remove listener from given list of topics. If topicList
doesn't have any topics for which listener has subscribed,
nothing happens."""
weakCB = _getWeakRef(listener)
if not self.__callbackDict.has_key(weakCB):
return
cbNodes = self.__callbackDict[weakCB]
if topicList is None:
for weakNode in cbNodes:
weakNode().removeCallable(listener)
del self.__callbackDict[weakCB]
return
for weakNode in cbNodes:
node = weakNode()
if node is not None and node.getPathname() in topicList:
success = node.removeCallable(listener)
assert success == True
cbNodes.remove(weakNode)
assert not self.isSubscribed(listener, node.getPathname())
def unsubscribe(self, listener, topicList):
"""Remove listener from given list of topics. If topicList
doesn't have any topics for which listener has subscribed,
nothing happens."""
weakCB = _getWeakRef(listener)
if not self.__callbackDict.has_key(weakCB):
return
cbNodes = self.__callbackDict[weakCB]
if topicList is None:
for weakNode in cbNodes:
weakNode().removeCallable(listener)
del self.__callbackDict[weakCB]
return
for weakNode in cbNodes:
node = weakNode()
if node is not None and node.getPathname() in topicList:
success = node.removeCallable(listener)
assert success == True
cbNodes.remove(weakNode)
assert not self.isSubscribed(listener, node.getPathname())
def getTopics(self, listener):
"""Return the list of topics for given listener"""
weakNodes = self.__callbackDict.get(_getWeakRef(listener), [])
return [weakNode().getPathname() for weakNode in weakNodes
if weakNode() is not None]
def __init__(self, obj):
self.objRef = _getWeakRef(obj)
def __init__(self, obj):
self.objRef = _getWeakRef(obj)
