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Provide Signal class.
A signals implementation.
>>> class Button: ... def __init__(self): ... # Creating a signal as a member of a class ... self.sigClick = Signal()
>>> class Listener: ... # a sample method that will be connected to the signal ... def onClick(self): ... print "onClick ", repr(self)
>>> # a sample function to connect to the signal >>> def listenFunction(): ... print "listenFunction"
>>> # a function that accepts arguments >>> def listenWithArgs(text): ... print "listenWithArgs: ", text
>>> b = Button() >>> l = Listener()
>>> b.sigClick.connect(l.onClick) >>> b.sigClick() onClick <__main__.Listener instance at 0x4024cf2c>
>>> # Disconnecting all signals >>> b.sigClick.disconnectAll() >>> b.sigClick()
>>> # connecting multiple functions to a signal >>> l2 = Listener() >>> b.sigClick.connect(l.onClick) >>> b.sigClick.connect(l2.onClick) >>> b.sigClick() onClick <__main__.Listener instance at 0x4024cf2c> onClick <__main__.Listener instance at 0x4024ce0c>
>>> # disconnecting individual functions >>> b.sigClick.disconnect(l.onClick) >>> b.sigClick.connect(listenFunction) >>> b.sigClick() onClick <__main__.Listener instance at 0x4024ce0c> listenFunction
>>> # signals disconnecting automatically >>> b.sigClick.disconnectAll() >>> b.sigClick.connect(l.onClick) >>> b.sigClick.connect(l2.onClick) >>> del l2 >>> b.sigClick() onClick <__main__.Listener instance at 0x4024cf2c>
>>> # example with arguments and a local signal >>> sig = Signal() >>> sig.connect(listenWithArgs) >>> sig("Hello, World!") listenWithArgs: Hello, World!
Based on a Patrick Chasco's code.
Copyright: 2003-2005
Organization: CEA-Grenoble
License: GPL
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Signal class Signal. |
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WeakMethod This class was generously donated by a poster on ASPN |
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__revision__ =
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__package__ =
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