Mercurial > fife-parpg

annotate tools/editor/scripts/events/signal.py @ 393:d819a70949d2

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Replaced FIFE license header with Django license in files copied directly from django
author cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
date Sun, 24 Jan 2010 16:52:40 +0000
parents fa1373b9fa16
children
rev   line source
385
fa1373b9fa16 Added the correct header to a few of the editor files.
prock@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 378
diff changeset
1 # -*- coding: utf-8 -*-
fa1373b9fa16 Added the correct header to a few of the editor files.
prock@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 378
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2
393
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
3 # Copyright (c) Django Software Foundation and individual contributors.
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
4 # All rights reserved.
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
5 #
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
6 # Redistribution and use in source and binary forms, with or without modification,
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
7 # are permitted provided that the following conditions are met:
385
fa1373b9fa16 Added the correct header to a few of the editor files.
prock@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 378
diff changeset
8 #
393
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
9 # 1. Redistributions of source code must retain the above copyright notice,
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
10 # this list of conditions and the following disclaimer.
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
11 #
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
12 # 2. Redistributions in binary form must reproduce the above copyright
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
13 # notice, this list of conditions and the following disclaimer in the
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
14 # documentation and/or other materials provided with the distribution.
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
15 #
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
16 # 3. Neither the name of Django nor the names of its contributors may be used
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
17 # to endorse or promote products derived from this software without
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
18 # specific prior written permission.
385
fa1373b9fa16 Added the correct header to a few of the editor files.
prock@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 378
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19 #
393
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
20 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
21 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
22 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
23 # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
24 # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
25 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
26 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
27 # ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
28 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
d819a70949d2 Replaced FIFE license header with Django license in files copied directly from django
cheesesucker@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 385
diff changeset
29 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
385
fa1373b9fa16 Added the correct header to a few of the editor files.
prock@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 378
diff changeset
30
378
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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31 """Multi-consumer multi-producer dispatching mechanism
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
32
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
33 Originally based on pydispatch (BSD) http://pypi.python.org/pypi/PyDispatcher/2.0.1
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
34 See license.txt for original license.
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
35
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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36 Heavily modified for Django's purposes.
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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37
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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38 Copied from django v1.1 beta 1
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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39 Changes:
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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40 * Receivers aren't needed to accept any arguments
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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41 * _live_receivers() now work on a copy of self.receivers, which fixes a bug when
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
42 connecting and disconnecting during send()
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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43 """
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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44
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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45 import weakref
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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46 import saferef
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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47 from fife.extensions import pychan
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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48
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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49 WEAKREF_TYPES = (weakref.ReferenceType, saferef.BoundMethodWeakref)
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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50
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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51 debug = True
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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52
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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53 def _make_id(target):
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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54 if hasattr(target, 'im_func'):
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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55 return (id(target.im_self), id(target.im_func))
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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56 return id(target)
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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57
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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58 class Signal(object):
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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59 """Base class for all signals
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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60
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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61 Internal attributes:
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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62 receivers -- { receriverkey (id) : weakref(receiver) }
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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63 """
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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64
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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65 def __init__(self, providing_args=None):
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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66 """providing_args -- A list of the arguments this signal can pass along in
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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67 a send() call.
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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68 """
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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69 self.receivers = []
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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70 if providing_args is None:
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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71 providing_args = []
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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72 self.providing_args = set(providing_args)
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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73
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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74 def connect(self, receiver, sender=None, weak=True, dispatch_uid=None):
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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75 """Connect receiver to sender for signal
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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76
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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77 receiver -- a function or an instance method which is to
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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78 receive signals. Receivers must be
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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79 hashable objects.
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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80
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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81 if weak is True, then receiver must be weak-referencable
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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82 (more precisely saferef.safeRef() must be able to create
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
83 a reference to the receiver).
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diff changeset
84
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diff changeset
85 Receivers must be able to accept keyword arguments.
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diff changeset
86
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diff changeset
87 If receivers have a dispatch_uid attribute, the receiver will
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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diff changeset
88 not be added if another receiver already exists with that
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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diff changeset
89 dispatch_uid.
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diff changeset
90
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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diff changeset
91 sender -- the sender to which the receiver should respond
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diff changeset
92 Must either be of type Signal, or None to receive events
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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parents:
diff changeset
93 from any sender.
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diff changeset
94
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diff changeset
95 weak -- whether to use weak references to the receiver
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diff changeset
96 By default, the module will attempt to use weak
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diff changeset
97 references to the receiver objects. If this parameter
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diff changeset
98 is false, then strong references will be used.
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diff changeset
99
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diff changeset
100 dispatch_uid -- an identifier used to uniquely identify a particular
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diff changeset
101 instance of a receiver. This will usually be a string, though it
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diff changeset
102 may be anything hashable.
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diff changeset
103
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diff changeset
104 returns None
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105 """
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diff changeset
106
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diff changeset
107 # If DEBUG is on, check that we got a good receiver
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108 if debug:
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diff changeset
109 import inspect
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diff changeset
110 assert callable(receiver), "Signal receivers must be callable."
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diff changeset
111
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112 # Check for **kwargs
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113 # Not all callables are inspectable with getargspec, so we'll
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114 # try a couple different ways but in the end fall back on assuming
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115 # it is -- we don't want to prevent registration of valid but weird
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116 # callables.
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117 try:
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118 argspec = inspect.getargspec(receiver)
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119 except TypeError:
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120 try:
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121 argspec = inspect.getargspec(receiver.__call__)
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diff changeset
122 except (TypeError, AttributeError):
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diff changeset
123 argspec = None
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124
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125 if dispatch_uid:
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126 lookup_key = (dispatch_uid, _make_id(sender))
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127 else:
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128 lookup_key = (_make_id(receiver), _make_id(sender))
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129
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130 if weak:
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131 receiver = saferef.safeRef(receiver, onDelete=self._remove_receiver)
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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132
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133 for r_key, _ in self.receivers:
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134 if r_key == lookup_key:
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vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
135 break
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diff changeset
136 else:
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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diff changeset
137 self.receivers.append((lookup_key, receiver))
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138
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139 def disconnect(self, receiver=None, sender=None, weak=True, dispatch_uid=None):
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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140 """Disconnect receiver from sender for signal
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141
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142 receiver -- the registered receiver to disconnect. May be none if
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diff changeset
143 dispatch_uid is specified.
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diff changeset
144 sender -- the registered sender to disconnect
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145 weak -- the weakref state to disconnect
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146 dispatch_uid -- the unique identifier of the receiver to disconnect
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147
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diff changeset
148 disconnect reverses the process of connect.
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149
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150 If weak references are used, disconnect need not be called.
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151 The receiver will be remove from dispatch automatically.
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152
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153 returns None
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154 """
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155
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diff changeset
156 if dispatch_uid:
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157 lookup_key = (dispatch_uid, _make_id(sender))
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158 else:
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diff changeset
159 lookup_key = (_make_id(receiver), _make_id(sender))
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160
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161 for idx, (r_key, _) in enumerate(self.receivers):
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162 if r_key == lookup_key:
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163 del self.receivers[idx]
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164
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165 def send(self, sender, **named):
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166 """Send signal from sender to all connected receivers.
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167
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168 sender -- the sender of the signal
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169 Either a specific object or None.
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170
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171 named -- named arguments which will be passed to receivers.
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172
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173 Returns a list of tuple pairs [(receiver, response), ... ].
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174
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175 If any receiver raises an error, the error propagates back
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176 through send, terminating the dispatch loop, so it is quite
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177 possible to not have all receivers called if a raises an
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178 error.
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179 """
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180
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181 responses = []
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182 if not self.receivers:
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183 return responses
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184
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185 for receiver in self._live_receivers(_make_id(sender)):
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186 response = pychan.tools.applyOnlySuitable(receiver, signal=self, sender=sender, **named)
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187 responses.append((receiver, response))
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188 return responses
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189
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190 def send_robust(self, sender, **named):
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191 """Send signal from sender to all connected receivers catching errors
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192
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193 sender -- the sender of the signal
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194 Can be any python object (normally one registered with
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diff changeset
195 a connect if you actually want something to occur).
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196
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197 named -- named arguments which will be passed to receivers.
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198 These arguments must be a subset of the argument names
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199 defined in providing_args.
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200
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201 Return a list of tuple pairs [(receiver, response), ... ],
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202 may raise DispatcherKeyError
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203
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204 if any receiver raises an error (specifically any subclass of Exception),
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diff changeset
205 the error instance is returned as the result for that receiver.
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206 """
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207
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208 responses = []
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diff changeset
209 if not self.receivers:
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210 return responses
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211
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212 # Call each receiver with whatever arguments it can accept.
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213 # Return a list of tuple pairs [(receiver, response), ... ].
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214 for receiver in self._live_receivers(_make_id(sender)):
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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diff changeset
215 try:
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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216 response = pychan.tools.applyOnlySuitable(receiver, signal=self, sender=sender, **named)
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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diff changeset
217 except Exception, err:
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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218 responses.append((receiver, err))
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219 else:
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220 responses.append((receiver, response))
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221 return responses
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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222
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223 def _live_receivers(self, senderkey):
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224 """Filter sequence of receivers to get resolved, live receivers
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225
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226 This checks for weak references
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227 and resolves them, then returning only live
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228 receivers.
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229 """
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230 none_senderkey = _make_id(None)
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231
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232 for (receiverkey, r_senderkey), receiver in self.receivers[:]:
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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233 if r_senderkey == none_senderkey or r_senderkey == senderkey:
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234 if isinstance(receiver, WEAKREF_TYPES):
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235 # Dereference the weak reference.
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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236 receiver = receiver()
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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237 if receiver is not None:
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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238 yield receiver
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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239 else:
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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240 yield receiver
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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241
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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242 def _remove_receiver(self, receiver):
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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243 """Remove dead receivers from connections."""
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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244
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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245 to_remove = []
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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246 for key, connected_receiver in self.receivers:
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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247 if connected_receiver == receiver:
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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248 to_remove.append(key)
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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249 for key in to_remove:
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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250 for idx, (r_key, _) in enumerate(self.receivers):
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
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251 if r_key == key:
64738befdf3b bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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252 del self.receivers[idx]