Show _RefBase.py syntax highlighted
#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2006 Donald N. Allingham
#
# This program 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 2 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# $Id: _RefBase.py 7878 2007-01-08 01:49:33Z dallingham $
"""
Base Reference class for GRAMPS.
"""
__revision__ = "$Revision: 7878 $"
#-------------------------------------------------------------------------
#
# RefBase class
#
#-------------------------------------------------------------------------
class RefBase:
"""
Base reference class to manage references to other objects.
Any *Ref class should derive from this class.
"""
def __init__(self, source=None):
if source:
self.ref = source.ref
else:
self.ref = None
def serialize(self):
"""
Converts the object to a serialized tuple of data
"""
return self.ref
def unserialize(self, data):
"""
Converts a serialized tuple of data to an object
"""
self.ref = str(data)
return self
def get_referenced_handles(self):
"""
Returns the list of (classname,handle) tuples for all directly
referenced primary objects.
@return: Returns the list of (classname,handle) tuples for referenced objects.
@rtype: list
"""
assert False, "Must be overridden in the derived class"
def set_reference_handle(self, val):
self.ref = val
def get_reference_handle(self):
return self.ref
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