0002041: show dialog if db version too high; ask question to upgrade the db version

svn: r10535

src/DbLoader.py

@@ -271,6 +271,11 @@ class DbLoader:
         try:
             self.dbstate.db.load(filename, self.uistate.pulse_progressbar, mode)
             self.dbstate.db.set_save_path(filename)
+        except gen.db.FileVersionDeclineToUpgrade:
+            self.dbstate.no_database()
+        except gen.db.exceptions.FileVersionError, msg:
+            ErrorDialog( _("Cannot open database"), str(msg))
+            self.dbstate.no_database()
         except OSError, msg:
             ErrorDialog(
                 _("Could not open file: %s") % filename, str(msg))
@@ -281,8 +286,6 @@ class DbLoader:
             _LOG.error("Failed to open database.", exc_info=True)
         return True
 
-
-
     def do_import(self, dialog, importer, filename):
         self.import_info = None
         dialog.destroy()

src/gen/db/dbdir.py

@@ -50,10 +50,11 @@ from gen.lib import (GenderStats, Person, Family, Event, Place, Source,
                      MediaObject, Repository, Note)
 from gen.db import (GrampsDbBase, KEY_TO_CLASS_MAP, CLASS_TO_KEY_MAP, 
                     REFERENCE_KEY, Transaction)
-from gen.db.exceptions import FileVersionError
 from BasicUtils import UpdateCallback
 from gen.db.cursor import GrampsCursor
+from gen.db.exceptions import FileVersionError, FileVersionDeclineToUpgrade
 import Errors
+from QuestionDialog import QuestionDialog2
 
 _MINVERSION = 9
 _DBVERSION = 14
@@ -505,6 +506,7 @@ class GrampsDBDir(GrampsDbBase, UpdateCallback):
         # it makes no sense to go further
         if not self.version_supported():
             self.__close_early()
+            return 0
 
         self.family_map     = self.__open_table(self.full_name, FAMILY_TBL)
         self.place_map      = self.__open_table(self.full_name, PLACES_TBL)
@@ -554,7 +556,18 @@ class GrampsDBDir(GrampsDbBase, UpdateCallback):
         # self.secondary_connected flag should be set accordingly.
         
         if self.need_upgrade():
+            if QuestionDialog2(_("Need to upgrade database!"), 
+                               _("You cannot open this database "
+                                 "without upgrading it.\n"
+                                 "If you upgrade then you won't be able "
+                                 "to use previous versions of GRAMPS.\n" 
+                                 "You might want to make a backup copy "
+                                 "first."), 
+                               _("Upgrade now"), 
+                               _("Cancel")).run():
                 self.gramps_upgrade(callback)
+            else:
+                raise FileVersionDeclineToUpgrade()
 
         if callback:
             callback(50)
@@ -1198,10 +1211,10 @@ class GrampsDBDir(GrampsDbBase, UpdateCallback):
         self.env        = None
         self.db_is_open = False
         raise FileVersionError(
-            "The database version is not supported by this "
+            _("The database version is not supported by this "
               "version of GRAMPS.\nPlease upgrade to the "
               "corresponding version or use XML for porting "
-            "data between different database versions.")
+              "data between different database versions."))
 
     def close(self):
         try:

src/gen/db/exceptions.py

@@ -58,3 +58,9 @@ class FileVersionError(Exception):
 
     def __str__(self):
         return self.value
+
+class FileVersionDeclineToUpgrade(Exception):
+    """
+    Error raised when user decides not to upgrade a necessary upgrade.
+    """
+    pass