Mercurial > libervia-backend

comparison 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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1361:d3e9848b9574 1362:99d596613661
1 #!/usr/bin/python
2 # -*- coding: utf-8 -*-
3
4 # SAT: a jabber client
5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 Jérôme Poisson (goffi@goffi.org)
6
7 # This program is free software: you can redistribute it and/or modify
8 # it under the terms of the GNU Affero General Public License as published by
9 # the Free Software Foundation, either version 3 of the License, or
10 # (at your option) any later version.
11
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU Affero General Public License for more details.
16
17 # You should have received a copy of the GNU Affero General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
19
20 """This module is only used launch callbacks when host is ready, used for early initialisation stuffs"""
21
22
23 listeners = []
24
25 def addListener(cb):
26 """Add a listener which will be called when host is ready
27
28 @param cb: callback which will be called when host is ready with host as only argument
29 """
30 listeners.append(cb)
31
32 def callListeners(host):
33 """Must be called by frontend when host is ready.
34
35 The call will launch all the callbacks, then remove the listeners list.
36 @param host(QuickApp): the instancied QuickApp subclass
37 """
38 global listeners
39 while True:
40 try:
41 cb = listeners.pop(0)
42 cb(host)
43 except IndexError:
44 break
45 del listeners