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annotate frontends/src/tools/host_listener.py @ 1362:99d596613661 frontends_multi_profiles

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frontends: added a host_listener module which manage a listener launched when host is ready, useful to instantiate things on host in optional modules (e.g. menus).
author Goffi <goffi@goffi.org>
date Tue, 17 Mar 2015 19:30:43 +0100
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children 069ad98b360d
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99d596613661 frontends: added a host_listener module which manage a listener launched when host is ready, useful to instantiate things on host in optional modules (e.g. menus).
Goffi <goffi@goffi.org>
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 # SAT: a jabber client
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5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 Jérôme Poisson (goffi@goffi.org)
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6
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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
99d596613661 frontends: added a host_listener module which manage a listener launched when host is ready, useful to instantiate things on host in optional modules (e.g. menus).
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10 # (at your option) any later version.
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11
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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
99d596613661 frontends: added a host_listener module which manage a listener launched when host is ready, useful to instantiate things on host in optional modules (e.g. menus).
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15 # GNU Affero General Public License for more details.
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99d596613661 frontends: added a host_listener module which manage a listener launched when host is ready, useful to instantiate things on host in optional modules (e.g. menus).
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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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21
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22
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23 listeners = []
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24
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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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27
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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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31
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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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34
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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