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annotate piecrust/events.py @ 828:bca06fc064c0

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author Ben Artin <ben@artins.org>
date Sun, 01 Jan 2017 19:32:19 -0500
parents f485ba500df3
children f070a4fc033c
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f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
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f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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2 class Event(object):
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3 def __init__(self):
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4 self._handlers = []
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6 def __iadd__(self, handler):
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7 self._handlers.append(handler)
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8 return self
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10 def __isub__(self, handler):
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11 self._handlers.remove(handler)
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12 return self
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14 def fire(self, *args, **kwargs):
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15 # Make a copy of the handlers list in case some handler removes
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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16 # itself while executing.
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17 handlers = list(self._handlers)
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18 for handler in handlers:
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19 handler(*args, **kwargs)
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