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Publisher is now able to parse a dotted notation string

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into a topic tuple.  For example: subscribing to "timer.clock.seconds"
is the same as subscribing to ("timer", "clock", "seconds").


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@37831 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robin Dunn 2006-03-06 20:17:20 +00:00
parent 8902898054
commit b0429a4019
1 changed files with 16 additions and 13 deletions
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29
wxPython/wx/lib/pubsub.py
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@ -39,7 +39,7 @@ Ideally, _TopicTreeNode would be a generic _TreeNode with named
subnodes, and _TopicTreeRoot would be a generic _Tree with named
nodes, and Publisher would store listeners in each node and a topic
tuple would be converted to a path in the tree. This would lead to a
much cleaner separation of concerns. But time is over, tim to move on.
much cleaner separation of concerns. But time is over, time to move on.
"""
#---------------------------------------------------------------------------
@ -90,9 +90,11 @@ def _paramMinCount(callableObject):
def _tupleize(items):
"""Convert items to tuple if not already one,
so items must be a list, tuple or non-sequence"""
if isinstance(items, type([])):
if isinstance(items, list):
raise TypeError, 'Not allowed to tuple-ize a list'
elif not isinstance(items, type(())):
elif isinstance(items, (str, unicode)) and items.find('.') != -1:
items = tuple(items.split('.'))
elif not isinstance(items, tuple):
items = (items,)
return items
@ -561,10 +563,11 @@ class Publisher:
with only one argument. In every case, the parameter 'a' will contain
the message.
- topic: a single word or tuple of words (though word could probably
be any kind of object, not just a string, but this has not been
tested). A tuple denotes a hierarchy of topics from most general
to least. For example, a listener of this topic::
- topic: a single word, a tuple of words, or a string containing a
set of words separated by dots, for example: 'sports.baseball'.
A tuple or a dotted notation string denotes a hierarchy of
topics from most general to least. For example, a listener of
this topic::
('sports','baseball')
@ -614,11 +617,11 @@ class Publisher:
listener will be subscribed for all topics (that listener will
receive a Message for any topic for which a message is generated).
This method may be
called multiple times for one listener, registering it with
many topics. It can also be invoked many times for a
particular topic, each time with a different listener.
See the class doc for requirements on listener and topic.
This method may be called multiple times for one listener,
registering it with many topics. It can also be invoked many
times for a particular topic, each time with a different
listener. See the class doc for requirements on listener and
topic.
:note: Calling
this method for the same listener, with two topics in the same
@ -691,7 +694,7 @@ class Publisher:
return
# make sure every topics are in tuple form
if isinstance(topics, type([])):
if isinstance(topics, list):
topicList = [_tupleize(x) for x in topics]
else:
topicList = [_tupleize(topics)]