/usr/share/pyshared/gtkmvc/support/factories.py is in python-gtkmvc 1.99.1-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Author: Roberto Cavada <roboogle@gmail.com>
#
# Copyright (C) 2008 by Roberto Cavada
#
# pygtkmvc is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# pygtkmvc 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor,
# Boston, MA 02110, USA.
#
# For more information on pygtkmvc see <http://pygtkmvc.sourceforge.net>
# or email to the author Roberto Cavada <roboogle@gmail.com>.
# Please report bugs to <roboogle@gmail.com>.
# -------------------------------------------------------------------------
import new
from gtkmvc import Model
from noconflict import get_noconflict_metaclass
class ModelFactory (object):
"""This factory constructs classes for models. Use it to build
the classes to derive your own models"""
__memoized = {}
@staticmethod
def __fix_bases(base_classes, have_mt):
"""This function check whether base_classes contains a Model
instance. If not, choose the best fitting class for
model. Furthermore, it makes the list in a cannonical
ordering form in a way that ic can be used as memoization
key"""
fixed = list(base_classes)
contains_model = False
for b in fixed:
if isinstance(fixed, Model): contains_model = True; break
pass
# adds a model when user is lazy
if not contains_model:
if have_mt:
from gtkmvc.model_mt import ModelMT
fixed.insert(0, ModelMT)
else: fixed.insert(0, Model)
pass
class ModelFactoryWrap (object):
__metaclass__ = get_noconflict_metaclass(tuple(fixed), (), ())
def __init__(self, *args, **kwargs): pass
pass
fixed.append(ModelFactoryWrap)
fixed.sort()
return tuple(fixed)
@staticmethod
def make(base_classes=(), have_mt=False):
"""Use this static method to build a model class that
possibly derives from other classes. If have_mt is True,
then returned class will take into account multi-threading
issues when dealing with observable properties."""
good_bc = ModelFactory.__fix_bases(base_classes, have_mt)
print "Base classes are:", good_bc
key = "".join(map(str, good_bc))
if ModelFactory.__memoized.has_key(key):
return ModelFactory.__memoized[key]
cls = new.classobj('', good_bc, {'__module__': '__main__', '__doc__': None})
ModelFactory.__memoized[key] = cls
return cls
#__
#make = staticmethod(make)
pass # end of class
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