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2006-05-06 Alex Roitman <shura@gramps-project.org>

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* src/GrampsDb/_GrampsBSDDB.py (load): Use common undodb
	methods; reset undo history.
	* src/GrampsDb/_GrampsInMemDB.py (load): Use common undodb
	methods; reset undo history.
	* src/GrampsDb/_GrampsXMLDB.py: Minor fix.
	* src/GrampsDb/_GrampsGEDDB.py: Minor fix.
	* src/GrampsDb/_GrampsDbBase.py: Undo history support.
	* src/UndoHistory.py: Fixes and additions.
	* src/ViewManager.py (post_load): Re-set undo/redo labels.



svn: r6569
This commit is contained in:
Alex Roitman
2006-05-07 05:22:44 +00:00
parent 064c8ce061
commit 179a8dac52
8 changed files with 144 additions and 76 deletions
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76
src/GrampsDb/_GrampsDbBase.py
View File

@@ -39,6 +39,7 @@ import random
import locale
import os
from sys import maxint
from bsddb import db
from gettext import gettext as _
try:
@@ -261,6 +262,7 @@ class GrampsDbBase(GrampsDBCallback):
self.undoindex = -1
self.translist = [None] * _UNDO_SIZE
self.abort_possible = True
self.undo_history_timestamp = 0
self.default = None
self.owner = Researcher()
self.bookmarks = []
@@ -333,6 +335,20 @@ class GrampsDbBase(GrampsDBCallback):
def get_repository_cursor(self):
assert False, "Needs to be overridden in the derived class"
def open_undodb(self):
if not self.readonly:
self.undolog = "%s.undo" % self.full_name
self.undodb = db.DB()
self.undodb.open(self.undolog, db.DB_RECNO, db.DB_CREATE)
def close_undodb(self):
if not self.readonly:
self.undodb.close()
try:
os.remove(self.undolog)
except:
pass
def load(self, name, callback, mode="w"):
"""
Opens the specified database. The method needs to be overridden
@@ -1209,6 +1225,7 @@ class GrampsDbBase(GrampsDBCallback):
# A batch transaction does not store the commits
# Aborting the session completely will become impossible.
self.abort_possible = False
self.undo_history_timestamp = time.time()
# Undo is also impossible after batch transaction
self.undoindex = -1
return Transaction(msg, self.undodb, batch)
@@ -1230,6 +1247,7 @@ class GrampsDbBase(GrampsDBCallback):
# We overran the undo size.
# Aborting the session completely will become impossible.
self.abort_possible = False
self.undo_history_timestamp = time.time()
self.translist = self.translist[0:-1] + [ transaction ]
else:
self.translist[self.undoindex] = transaction
@@ -1306,12 +1324,29 @@ class GrampsDbBase(GrampsDBCallback):
retlist.append(str(handle))
return retlist
def undo_available(self):
# returns boolean of whether or not there's a possibility of undo
if self.undoindex == -1 or self.readonly:
return False
return True
def redo_available(self):
# returns boolean of whether or not there's a possibility of redo
if self.undoindex >= _UNDO_SIZE or self.readonly:
return False
if self.translist[self.undoindex+1] == None:
return False
return True
def undo(self,update_history=True):
"""
Accesses the last committed transaction, and reverts the data to
the state before the transaction was committed.
"""
if self.undoindex == -1 or self.readonly:
if not self.undo_available():
return False
transaction = self.translist[self.undoindex]
@@ -1331,19 +1366,19 @@ class GrampsDbBase(GrampsDBCallback):
self.undo_data(old_data, handle, mapbase[key], _sigbase[key])
if self.undo_callback:
if self.undoindex == -1:
self.undo_callback(None)
else:
if self.undo_available():
new_transaction = self.translist[self.undoindex]
self.undo_callback(_("_Undo %s")
% new_transaction.get_description())
if self.redo_callback:
if self.undoindex >= _UNDO_SIZE \
or self.translist[self.undoindex+1]==None:
self.redo_callback(None)
else:
self.undo_callback(None)
if self.redo_callback:
if self. redo_available():
self.redo_callback(_("_Redo %s")
% transaction.get_description())
else:
self.redo_callback(None)
if update_history and self.undo_history_callback:
self.undo_history_callback()
@@ -1354,14 +1389,12 @@ class GrampsDbBase(GrampsDBCallback):
Accesses the last undone transaction, and reverts the data to
the state before the transaction was undone.
"""
if self.undoindex >= _UNDO_SIZE or self.readonly:
return False
transaction = self.translist[self.undoindex+1]
if transaction == None:
if not self.redo_available():
return False
self.undoindex += 1
transaction = self.translist[self.undoindex]
mapbase = (self.person_map, self.family_map, self.source_map,
self.event_map, self.media_map, self.place_map,
self.repository_map)
@@ -1375,26 +1408,19 @@ class GrampsDbBase(GrampsDBCallback):
self.undo_data(new_data, handle, mapbase[key], _sigbase[key])
if self.undo_callback:
if self.undoindex == -1:
self.undo_callback(None)
else:
if self.undo_available():
self.undo_callback(_("_Undo %s")
% transaction.get_description())
if self.redo_callback:
if self.undoindex >= _UNDO_SIZE \
or self.translist[self.undoindex+1]==None:
self.redo_callback(None)
else:
self.undo_callback(None)
if self.redo_callback:
if self.redo_available():
new_transaction = self.translist[self.undoindex+1]
self.redo_callback(_("_Redo %s")
% new_transaction.get_description())
if self.undo_callback:
if self.undoindex == _UNDO_SIZE:
self.undo_callback(None)
else:
self.undo_callback(_("_Undo %s")
% transaction.get_description())
self.redo_callback(None)
if update_history and self.undo_history_callback:
self.undo_history_callback()