Mercurial > libervia-backend
changeset 1362:99d596613661 frontends_multi_profiles
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 |
parents | d3e9848b9574 |
children | fa77e40eb17b |
files | frontends/src/tools/host_listener.py |
diffstat | 1 files changed, 45 insertions(+), 0 deletions(-) [+] |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/frontends/src/tools/host_listener.py Tue Mar 17 19:30:43 2015 +0100 @@ -0,0 +1,45 @@ +#!/usr/bin/python +# -*- coding: utf-8 -*- + +# SAT: a jabber client +# Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 Jérôme Poisson (goffi@goffi.org) + +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU Affero General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU Affero General Public License for more details. + +# You should have received a copy of the GNU Affero General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +"""This module is only used launch callbacks when host is ready, used for early initialisation stuffs""" + + +listeners = [] + +def addListener(cb): + """Add a listener which will be called when host is ready + + @param cb: callback which will be called when host is ready with host as only argument + """ + listeners.append(cb) + +def callListeners(host): + """Must be called by frontend when host is ready. + + The call will launch all the callbacks, then remove the listeners list. + @param host(QuickApp): the instancied QuickApp subclass + """ + global listeners + while True: + try: + cb = listeners.pop(0) + cb(host) + except IndexError: + break + del listeners