Mercurial > libervia-backend
view sat_frontends/tools/host_listener.py @ 3168:1cb232c9e845
quick frontends (widgets): added widgetNew and widgetDelete listeners:
- `widgetNew` is called when a brand new widget is created (not when a new instance is
created if there is already an existing one)
- `widgetDelete` is called when all instances of a widget (with a given widget_hash) have
been deleted.
author | Goffi <goffi@goffi.org> |
---|---|
date | Wed, 12 Feb 2020 19:46:14 +0100 |
parents | 559a625a236b |
children | be6d91572633 |
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#!/usr/bin/env python3 # SAT: a jabber client # Copyright (C) 2009-2020 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