gramps/src/RelLib/_MediaRef.py

#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2000-2006  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
#

# $Id$

"""
Media Reference class for GRAMPS
"""

__revision__ = "$Revision$"

#-------------------------------------------------------------------------
#
# GRAMPS modules
#
#-------------------------------------------------------------------------
from _SecondaryObject import SecondaryObject
from _PrivacyBase import PrivacyBase
from _SourceBase import SourceBase
from _NoteBase import NoteBase
from _RefBase import RefBase
from _AttributeBase import AttributeBase

#-------------------------------------------------------------------------
#
# MediaObject References for Person/Place/Source
#
#-------------------------------------------------------------------------
class MediaRef(SecondaryObject, PrivacyBase, SourceBase, NoteBase, RefBase,
               AttributeBase):
    """Media reference class"""
    def __init__(self, source=None):

        SecondaryObject.__init__(self)
        PrivacyBase.__init__(self, source)
        SourceBase.__init__(self, source)
        NoteBase.__init__(self, source)
        RefBase.__init__(self, source)
        AttributeBase.__init__(self, source)

        if source:
            self.rect = source.rect
        else:
            self.rect = None

    def serialize(self):
        """
        Converts the object to a serialized tuple of data
        """
        return (PrivacyBase.serialize(self),
                SourceBase.serialize(self),
                NoteBase.serialize(self),
                AttributeBase.serialize(self),
                RefBase.serialize(self),
                self.rect)

    def unserialize(self, data):
        """
        Converts a serialized tuple of data to an object
        """
        (privacy, source_list, note, attribute_list, ref, self.rect) = data
        PrivacyBase.unserialize(self, privacy)
        SourceBase.unserialize(self, source_list)
        NoteBase.unserialize(self, note)
        AttributeBase.unserialize(self, attribute_list)
        RefBase.unserialize(self, ref)
        return self

    def get_text_data_child_list(self):
        """
        Returns the list of child objects that may carry textual data.

        @return: Returns the list of child objects that may carry textual data.
        @rtype: list
        """
        check_list = self.attribute_list + self.source_list
        if self.note:
            check_list.append(self.note)
        return check_list

    def get_sourcref_child_list(self):
        """
        Returns the list of child secondary objects that may refer sources.

        @return: Returns the list of child secondary child objects that may refer sources.
        @rtype: list
        """
        return self.attribute_list

    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
        """
        if self.ref:
            return [('MediaObject', self.ref)]
        else:
            return []

    def get_handle_referents(self):
        """
        Returns the list of child objects which may, directly or through
        their children, reference primary objects..
        
        @return: Returns the list of objects refereincing primary objects.
        @rtype: list
        """
        return self.attribute_list + self.source_list

    def set_rectangle(self, coord):
        """Sets subection of an image"""
        self.rect = coord

    def get_rectangle(self):
        """Returns the subsection of an image"""
        return self.rect