63 lines
1.8 KiB
Python
63 lines
1.8 KiB
Python
# -*- coding: utf-8 -*-
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#
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# gPodder - A media aggregator and podcast client
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# Copyright (c) 2005-2018 The gPodder Team
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#
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# gPodder is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# gPodder is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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#
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# services.py -- Core Services for gPodder
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# Thomas Perl <thp@perli.net> 2007-08-24
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#
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#
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import gpodder
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from gpodder import util
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_ = gpodder.gettext
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class ObservableService(object):
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def __init__(self, signal_names=[]):
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self.observers = {}
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for signal in signal_names:
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self.observers[signal] = []
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def register(self, signal_name, observer):
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if signal_name in self.observers:
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if observer not in self.observers[signal_name]:
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self.observers[signal_name].append(observer)
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return True
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return False
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def unregister(self, signal_name, observer):
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if signal_name in self.observers:
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if observer in self.observers[signal_name]:
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self.observers[signal_name].remove(observer)
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return True
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return False
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def notify(self, signal_name, *args):
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if signal_name in self.observers:
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for observer in self.observers[signal_name]:
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util.idle_add(observer, *args)
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return True
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return False
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