352 lines
12 KiB
Python
352 lines
12 KiB
Python
#
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# Gramps - a GTK+/GNOME based genealogy program
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#
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# Copyright (C) 2000-2007 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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Basic Primary Object class for GRAMPS
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"""
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#-------------------------------------------------------------------------
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#
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# standard python modules
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#
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#-------------------------------------------------------------------------
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import time
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import locale
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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 baseobj import BaseObject
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from privacybase import PrivacyBase
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from markertype import MarkerType
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from srcbase import SourceBase
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from mediabase import MediaBase
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#-------------------------------------------------------------------------
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#
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# Localized constants
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#
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#-------------------------------------------------------------------------
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try:
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CODESET = locale.nl_langinfo(locale.CODESET)
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except:
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CODESET = locale.getpreferredencoding()
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#-------------------------------------------------------------------------
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#
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# Basic Primary Object class
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#
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#-------------------------------------------------------------------------
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class BasicPrimaryObject(BaseObject, PrivacyBase):
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"""
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The BasicPrimaryObject is the base class for Note objects.
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It is also the base class for the PrimaryObject class.
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The PrimaryObject is the base class for all other primary objects in the
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database. Primary objects are the core objects in the database.
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Each object has a database handle and a GRAMPS ID value. The database
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handle is used as the record number for the database, and the GRAMPS
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ID is the user visible version.
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"""
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def __init__(self, source=None):
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"""
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Initialize a PrimaryObject. If source is None, both the ID and handle
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are assigned as empty strings. If source is not None, then object
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is initialized from values of the source object.
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@param source: Object used to initialize the new object
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@type source: PrimaryObject
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"""
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PrivacyBase.__init__(self, source)
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if source:
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self.gramps_id = source.gramps_id
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self.handle = source.handle
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self.change = source.change
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self.marker = source.marker
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else:
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self.gramps_id = None
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self.handle = None
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self.change = 0
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self.marker = MarkerType()
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def get_change_time(self):
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"""
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Returns the time that the data was last changed. The value
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in the format returned by the time.time() command.
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@returns: Time that the data was last changed. The value
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in the format returned by the time.time() command.
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@rtype: int
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"""
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return self.change
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def get_change_display(self):
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"""
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Returns the string representation of the last change time.
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@returns: string representation of the last change time.
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@rtype: str
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"""
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if self.change:
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return unicode(time.strftime('%x %X', time.localtime(self.change)),
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CODESET)
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else:
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return u''
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def set_handle(self, handle):
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"""
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Sets the database handle for the primary object
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@param handle: object database handle
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@type handle: str
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"""
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self.handle = handle
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def get_handle(self):
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"""
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Returns the database handle for the primary object
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@returns: database handle associated with the object
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@rtype: str
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"""
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return self.handle
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def set_gramps_id(self, gramps_id):
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"""
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Sets the GRAMPS ID for the primary object
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@param gramps_id: GRAMPS ID
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@type gramps_id: str
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"""
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self.gramps_id = gramps_id
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def get_gramps_id(self):
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"""
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Returns the GRAMPS ID for the primary object
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@returns: GRAMPS ID associated with the object
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@rtype: str
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"""
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return self.gramps_id
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def has_handle_reference(self, classname, handle):
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"""
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Returns True if the object has reference to a given handle
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of given primary object type.
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@param classname: The name of the primary object class.
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@type classname: str
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@param handle: The handle to be checked.
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@type handle: str
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@return: Returns whether the object has reference to this handle of this object type.
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@rtype: bool
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"""
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return False
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def remove_handle_references(self, classname, handle_list):
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"""
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Removes all references in this object to object handles in the list.
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@param classname: The name of the primary object class.
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@type classname: str
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@param handle_list: The list of handles to be removed.
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@type handle_list: str
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"""
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pass
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def replace_handle_reference(self, classname, old_handle, new_handle):
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"""
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Replaces all references to old handle with those to the new handle.
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@param classname: The name of the primary object class.
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@type classname: str
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@param old_handle: The handle to be replaced.
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@type old_handle: str
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@param new_handle: The handle to replace the old one with.
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@type new_handle: str
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"""
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pass
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def set_marker(self, marker):
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"""
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Sets the marker for the object.
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@param marker: marker assigned to the object
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@type marker: MarkerType
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"""
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self.marker.set(marker)
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def get_marker(self):
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"""
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Returns the marker for the object. The exact type depends on the
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derived class type.
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@return: Returns the marker for the object.
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@rtype: MarkerType
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"""
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return self.marker
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def has_source_reference(self, handle):
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"""
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Indicates if the object has a source references. In the base class,
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no such references exist. Derived classes should override this if they
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provide source references.
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"""
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return False
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def has_media_reference(self, handle):
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"""
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Indicates if the object has a media references. In the base class,
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no such references exist. Derived classes should override this if they
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provide media references.
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"""
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return False
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def remove_source_references(self, handle_list):
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"""
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Removes the specified source references from the object. In the base class
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no such references exist. Derived classes should override this if they
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provide source references.
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"""
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pass
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def remove_media_references(self, handle_list):
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"""
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Removes the specified media references from the object. In the base class
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no such references exist. Derived classes should override this if they
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provide media references.
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"""
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pass
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def replace_source_references(self, old_handle, new_handle):
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pass
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def replace_media_references(self, old_handle, new_handle):
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pass
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#-------------------------------------------------------------------------
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#
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# Primary Object class
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#
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#-------------------------------------------------------------------------
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class PrimaryObject(BasicPrimaryObject):
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"""
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The PrimaryObject is the base class for all primary objects in the
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database. Primary objects are the core objects in the database.
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Each object has a database handle and a GRAMPS ID value. The database
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handle is used as the record number for the database, and the GRAMPS
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ID is the user visible version.
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"""
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def __init__(self, source=None):
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"""
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Initialize a PrimaryObject. If source is None, both the ID and handle
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are assigned as empty strings. If source is not None, then object
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is initialized from values of the source object.
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@param source: Object used to initialize the new object
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@type source: PrimaryObject
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"""
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BasicPrimaryObject.__init__(self, source)
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def has_handle_reference(self, classname, handle):
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"""
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Returns True if the object has reference to a given handle
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of given primary object type.
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@param classname: The name of the primary object class.
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@type classname: str
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@param handle: The handle to be checked.
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@type handle: str
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@return: Returns whether the object has reference to this handle
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of this object type.
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@rtype: bool
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"""
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if classname == 'Source' and isinstance(self, SourceBase):
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return self.has_source_reference(handle)
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elif classname == 'MediaObject' and isinstance(self, MediaBase):
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return self.has_media_reference(handle)
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else:
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return self._has_handle_reference(classname, handle)
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def remove_handle_references(self, classname, handle_list):
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"""
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Removes all references in this object to object handles in the list.
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@param classname: The name of the primary object class.
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@type classname: str
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@param handle_list: The list of handles to be removed.
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@type handle_list: str
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"""
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if classname == 'Source' and isinstance(self, SourceBase):
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self.remove_source_references(handle_list)
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elif classname == 'MediaObject' and isinstance(self, MediaBase):
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self.remove_media_references(handle_list)
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else:
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self._remove_handle_references(classname, handle_list)
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def replace_handle_reference(self, classname, old_handle, new_handle):
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"""
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Replaces all references to old handle with those to the new handle.
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@param classname: The name of the primary object class.
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@type classname: str
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@param old_handle: The handle to be replaced.
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@type old_handle: str
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@param new_handle: The handle to replace the old one with.
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@type new_handle: str
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"""
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if classname == 'Source' and isinstance(self, SourceBase):
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self.replace_source_references(old_handle, new_handle)
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elif classname == 'MediaObject' and isinstance(self, MediaBase):
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self.replace_media_references(old_handle, new_handle)
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else:
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self._replace_handle_reference(classname, old_handle, new_handle)
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def _has_handle_reference(self, classname, handle):
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"""
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returns True if the handle is referenced by the object
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"""
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return False
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def _remove_handle_references(self, classname, handle_list):
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"""
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removes the handle references from the object
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"""
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pass
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def _replace_handle_reference(self, classname, old_handle, new_handle):
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"""
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replaces the handle reference with the new reference
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"""
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pass
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def set_marker(self, marker):
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self.marker.set(marker)
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def get_marker(self):
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return self.marker
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