mirror of
https://github.com/gryf/pygtktalog.git
synced 2025-12-17 11:30:19 +01:00
57 lines
1.8 KiB
Python
57 lines
1.8 KiB
Python
# -------------------------------------------------------------------------
|
|
# Author: Roberto Cavada <cavada@irst.itc.it>
|
|
#
|
|
# Copyright (C) 2006 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
|
|
#
|
|
# For more information on pygtkmvc see <http://pygtkmvc.sourceforge.net>
|
|
# or email to the author Roberto Cavada <cavada@irst.itc.it>.
|
|
# Please report bugs to <cavada@irst.itc.it>.
|
|
# -------------------------------------------------------------------------
|
|
|
|
|
|
class Observer (object):
|
|
"""Use this class as base class of all observers"""
|
|
|
|
def __init__(self, model=None):
|
|
self.model = None
|
|
self.register_model(model)
|
|
return
|
|
|
|
def register_model(self, model):
|
|
self.unregister_model()
|
|
self.model = model
|
|
if self.model: self.model.register_observer(self)
|
|
return
|
|
|
|
def unregister_model(self):
|
|
if self.model:
|
|
self.model.unregister_observer(self)
|
|
self.model = None
|
|
pass
|
|
return
|
|
|
|
def __del__(self):
|
|
self.unregister_model()
|
|
return
|
|
|
|
def get_model(self): return self.model
|
|
|
|
pass # end of class
|
|
|
|
|
|
|