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Added method 'add_signal' to CallbackRegistry #381

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Added method 'add_signal' to CallbackRegistry #381

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2 changes: 2 additions & 0 deletions CHANGELOG
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Original file line number Diff line number Diff line change
@@ -1,3 +1,5 @@
2011-06-24 Added 'add_signal' to the CallbackRegistry. - BVR

2011-06-16 Added *bottom* keyword parameter for the stem command.
Also, implemented a legend handler for the stem plot.
- JJL
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10 changes: 10 additions & 0 deletions lib/matplotlib/cbook.py
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Expand Up @@ -221,6 +221,16 @@ def _check_signal(self, s):
signals.sort()
raise ValueError('Unknown signal "%s"; valid signals are %s'%(s, signals))

def add_signal(self, s) :
"""
Add another valid signal *s* to the registry.
If the signal already exists, no change is made.
"""
if s not in self.signals :
self.signals.add(s)
self.callbacks[s] = dict()


def connect(self, s, func):
"""
register *func* to be called when a signal *s* is generated
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