gramps/src/DisplayTabs/_RepoEmbedList.py
Benny Malengier ee69317b62 Fix for: 1277: database corroption on delete outside of DisplayTabs while tab open
Introduces the concept of callman.py as one single way to follow handles an
interface is interested in. 
dbguielement.py contains a small base class using that, usable for all windows/
guielements that need to track database changes to handles


svn: r12881
2009-08-05 10:32:05 +00:00

219 lines
7.5 KiB
Python

#
# 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
#
# $Id$
#-------------------------------------------------------------------------
#
# Python classes
#
#-------------------------------------------------------------------------
from gettext import gettext as _
#-------------------------------------------------------------------------
#
# GRAMPS classes
#
#-------------------------------------------------------------------------
import gen.lib
from gui.dbguielement import DbGUIElement
import Errors
from DdTargets import DdTargets
from _RepoRefModel import RepoRefModel
from _EmbeddedList import EmbeddedList
#-------------------------------------------------------------------------
#
# RepoEmbedList
#
#-------------------------------------------------------------------------
class RepoEmbedList(EmbeddedList, DbGUIElement):
_HANDLE_COL = 4
_DND_TYPE = DdTargets.REPOREF
_DND_EXTRA = DdTargets.REPO_LINK
_MSG = {
'add' : _('Create and add a new repository'),
'del' : _('Remove the existing repository'),
'edit' : _('Edit the selected repository'),
'share' : _('Add an existing repository'),
'up' : _('Move the selected repository upwards'),
'down' : _('Move the selected repository downwards'),
}
#index = column in model. Value =
# (name, sortcol in model, width, markup/text, weigth_col
_column_names = [
(_('ID'), 0, 75, 0, -1),
(_('Title'), 1, 200, 0, -1),
(_('Call Number'), 2, 125, 0, -1),
(_('Type'), 3, 100, 0, -1),
]
def __init__(self, dbstate, uistate, track, obj):
self.obj = obj
EmbeddedList.__init__(self, dbstate, uistate, track,
_('_Repositories'), RepoRefModel,
share_button=True, move_buttons=True)
DbGUIElement.__init__(self, dbstate.db)
self.callman.register_handles({'repository': [rref.ref for rref
in self.obj]})
def _connect_db_signals(self):
"""
Implement base class DbGUIElement method
"""
#note: repository-rebuild closes the editors, so no need to connect
self.callman.register_callbacks(
{'repository-delete': self.repo_delete, # delete a repo we track
'repository-update': self.repo_update, # change a repo we track
})
self.callman.connect_all(keys=['repository'])
def get_icon_name(self):
return 'gramps-repository'
def get_data(self):
return self.obj
def column_order(self):
return ((1, 0), (1, 1), (1, 2), (1, 3))
def handle_extra_type(self, objtype, obj):
try:
from Editors import EditRepoRef
ref = gen.lib.RepoRef()
repo = self.dbstate.db.get_repository_from_handle(obj)
EditRepoRef(
self.dbstate, self.uistate, self.track,
repo, ref, self.add_callback)
except Errors.WindowActiveError:
pass
def add_button_clicked(self, obj):
ref = gen.lib.RepoRef()
repo = gen.lib.Repository()
try:
from Editors import EditRepoRef
EditRepoRef(
self.dbstate, self.uistate, self.track,
repo, ref, self.add_callback)
except Errors.WindowActiveError:
pass
def share_button_clicked(self, obj):
from Selectors import selector_factory
SelectRepository = selector_factory('Repository')
sel = SelectRepository(
self.dbstate,
self.uistate,
self.track,
_("Select repository"))
repo = sel.run()
if repo:
try:
from Editors import EditRepoRef
ref = gen.lib.RepoRef()
EditRepoRef(self.dbstate,
self.uistate,
self.track,
repo,
ref,
self.add_callback)
except Errors.WindowActiveError:
pass
def add_callback(self, value):
value[0].ref = value[1].handle
self.get_data().append(value[0])
self.callman.register_handles({'repository': [value[1].handle]})
self.changed = True
self.rebuild()
def edit_button_clicked(self, obj):
ref = self.get_selected()
if ref:
repo = self.dbstate.db.get_repository_from_handle(ref.ref)
try:
from Editors import EditRepoRef
EditRepoRef(
self.dbstate, self.uistate, self.track, repo,
ref, self.edit_callback)
except Errors.WindowActiveError:
from QuestionDialog import WarningDialog
WarningDialog(
_("Cannot edit this reference"),
_("This repository reference cannot be edited at this "
"time. Either the associated repository is already "
"being edited or another repository reference that is "
"associated with the same repository is being edited."
"\n\nTo edit this repository reference, you need to "
"close the repository.")
)
def edit_callback(self, name):
self.changed = True
self.rebuild()
def repo_delete(self, del_repo_handle_list):
"""
Outside of this tab repo objects have been deleted. Check if tab
and object must be changed.
Note: delete of object will cause reference on database to be removed,
so this method need not do this
"""
rebuild = False
ref_handles = [rref.ref for rref in self.obj]
for handle in del_repo_handle_list :
while 1:
pos = None
try :
pos = ref_handles.index(handle)
except ValueError :
break
if pos is not None:
#oeps, we need to remove this reference, and rebuild tab
del self.obj[pos]
del ref_handles[pos]
rebuild = True
if rebuild:
self.rebuild()
def repo_update(self, upd_repo_handle_list):
"""
Outside of this tab repo objects have been changed. Check if tab
and object must be changed.
"""
ref_handles = [rref.ref for rref in self.obj]
for handle in upd_repo_handle_list :
if handle in ref_handles:
self.rebuild()
break