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annotate frontends/src/tools/host_listener.py @ 2307:8fa7edd0da24

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plugin Pubsub Hook: first draft: This new plugin allow to attach an external action to a Pubsub event (i.e. notification). Hook can be persitent accross restarts, or temporary (will be deleted on profile disconnection). Only Python files are handled for now. In the future, it may make sense to move hooks in a generic plugin which could be used by ad-hoc commands, messages, pubsub, etc.
author Goffi <goffi@goffi.org>
date Wed, 05 Jul 2017 15:05:47 +0200
parents 2daf7b4c6756
children 8b37a62336c3
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2daf7b4c6756 use of /usr/bin/env instead of /usr/bin/python in shebang
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1 #!/usr/bin/env python2
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2 # -*- coding: utf-8 -*-
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4 # SAT: a jabber client
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5 # Copyright (C) 2009-2016 Jérôme Poisson (goffi@goffi.org)
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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20 """This module is only used launch callbacks when host is ready, used for early initialisation stuffs"""
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23 listeners = []
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25 def addListener(cb):
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26 """Add a listener which will be called when host is ready
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28 @param cb: callback which will be called when host is ready with host as only argument
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29 """
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30 listeners.append(cb)
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32 def callListeners(host):
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33 """Must be called by frontend when host is ready.
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35 The call will launch all the callbacks, then remove the listeners list.
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36 @param host(QuickApp): the instancied QuickApp subclass
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37 """
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38 global listeners
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39 while True:
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40 try:
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41 cb = listeners.pop(0)
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42 cb(host)
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43 except IndexError:
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44 break
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45 del listeners