init undo on new deck, add importing

ankiqt/ui/importing.py

@@ -113,6 +113,9 @@ class ImportDialog(QDialog):
         self.importer.mapping = self.mapping
         self.importer.tagsToAdd = unicode(self.dialog.tags.text())
         self.importer.tagDuplicates = self.dialog.tagDuplicates.isChecked()
+        try:
+            n = _("Import")
+            self.parent.deck.setUndoStart(n)
             try:
                 self.importer.doImport()
             except ImportFormatError, e:
@@ -124,6 +127,8 @@ class ImportDialog(QDialog):
                 msg = _("Import failed: %s") % `e.data`
                 self.dialog.status.setText(msg)
                 return
+        finally:
+            self.parent.deck.setUndoEnd(n)
         txt = (
             _("Importing complete. %(num)d cards imported from %(file)s.\n") %
             {"num": self.importer.total, "file": os.path.basename(self.file)})

ankiqt/ui/main.py

@@ -618,6 +618,7 @@ To upgrade an old deck, download Anki 0.9.8.7."""))
     def onNew(self):
         if not self.saveAndClose(hideWelcome=True): return
         self.deck = DeckStorage.Deck()
+        self.deck.initUndo()
         self.deck.addModel(BasicModel())
         self.saveDeck()
         self.updateRecentFiles(self.deck.path)