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# -*- coding: utf-8 -*-
#
# This file is part of Linux Show Player
#
# Copyright 2012-2016 Francesco Ceruti <ceppofrancy@gmail.com>
#
# Linux Show Player is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Linux Show Player 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Linux Show Player. If not, see <http://www.gnu.org/licenses/>.
from abc import ABCMeta
from PyQt5.QtCore import QObject
from lisp.core.qmeta import QABCMeta
class Singleton(type):
def __call__(cls, *args, **kwargs):
try:
return cls.__instance
except AttributeError:
cls.__instance = super(Singleton, cls).__call__(*args, **kwargs)
return cls.__instance
class ABCSingleton(ABCMeta):
def __call__(cls, *args, **kwargs):
try:
return cls.__instance
except AttributeError:
cls.__instance = super(ABCSingleton, cls).__call__(*args, **kwargs)
return cls.__instance
class QSingleton(type(QObject)):
def __call__(cls, *args, **kwargs):
try:
return cls.__instance
except AttributeError:
cls.__instance = super(QSingleton, cls).__call__(*args, **kwargs)
return cls.__instance
class QABCSingleton(QABCMeta):
def __call__(cls, *args, **kwargs):
try:
return cls.__instance
except AttributeError:
cls.__instance = super(QABCSingleton, cls).__call__(*args, **kwargs)
return cls.__instance
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