9c0bc881b9
* src/RelLib/*.py: pylint fixes 2007-01-07 Douglas S. Blank <dblank@cs.brynmawr.edu> * src/Utils.py: probably_alive patch svn: r7878
139 lines
4.5 KiB
Python
139 lines
4.5 KiB
Python
#
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# Gramps - a GTK+/GNOME based genealogy program
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#
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# Copyright (C) 2000-2006 Donald N. Allingham
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# $Id$
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"""
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MediaBase class for GRAMPS
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"""
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__revision__ = "$Revision$"
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#-------------------------------------------------------------------------
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#
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# GRAMPS modules
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#
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#-------------------------------------------------------------------------
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from _MediaRef import MediaRef
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#-------------------------------------------------------------------------
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#
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# MediaBase class
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#
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#-------------------------------------------------------------------------
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class MediaBase:
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"""
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Base class for storing media references
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"""
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def __init__(self, source=None):
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"""
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Create a new MediaBase, copying from source if not None
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@param source: Object used to initialize the new object
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@type source: MediaBase
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"""
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if source:
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self.media_list = [ MediaRef(mref) for mref in source.media_list ]
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else:
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self.media_list = []
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def serialize(self):
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"""
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Converts the object to a serialized tuple of data
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"""
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return [mref.serialize() for mref in self.media_list]
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def unserialize(self, data):
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"""
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Converts a serialized tuple of data to an object
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"""
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self.media_list = [MediaRef().unserialize(item) for item in data]
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def add_media_reference(self, media_ref):
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"""
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Adds a L{MediaRef} instance to the object's media list.
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@param media_ref: L{MediaRef} instance to be added to the object's
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media list.
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@type media_ref: L{MediaRef}
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"""
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self.media_list.append(media_ref)
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def get_media_list(self):
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"""
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Returns the list of L{MediaRef} instances associated with the object.
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@returns: list of L{MediaRef} instances associated with the object
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@rtype: list
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"""
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return self.media_list
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def set_media_list(self, media_ref_list):
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"""
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Sets the list of L{MediaRef} instances associated with the object.
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It replaces the previous list.
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@param media_ref_list: list of L{MediaRef} instances to be assigned
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to the object.
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@type media_ref_list: list
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"""
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self.media_list = media_ref_list
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def has_media_reference(self, obj_handle) :
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"""
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Returns True if the object or any of it's child objects has reference
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to this media object handle.
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@param obj_handle: The media handle to be checked.
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@type obj_handle: str
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@return: Returns whether the object or any of it's child objects has reference to this media handle.
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@rtype: bool
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"""
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return obj_handle in [media_ref.ref for media_ref in self.media_list]
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def remove_media_references(self, obj_handle_list):
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"""
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Removes references to all media handles in the list.
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@param obj_handle_list: The list of media handles to be removed.
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@type obj_handle_list: list
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"""
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new_media_list = [ media_ref for media_ref in self.media_list \
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if media_ref.ref not in obj_handle_list ]
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self.media_list = new_media_list
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def replace_media_references(self, old_handle, new_handle):
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"""
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Replaces all references to old media handle with the new handle.
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@param old_handle: The media handle to be replaced.
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@type old_handle: str
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@param new_handle: The media handle to replace the old one with.
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@type new_handle: str
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"""
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refs_list = [ media_ref.ref for media_ref in self.media_list ]
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n_replace = refs_list.count(old_handle)
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for ix_replace in xrange(n_replace):
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ix = refs_list.index(old_handle)
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self.media_list[ix].ref = new_handle
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refs_list[ix] = new_handle
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