From a6815e7c61a7ab83cb15a0aa215c3229dbd4c246 Mon Sep 17 00:00:00 2001
From: Diego Prado Gesto <d.pradogesto@ultimaker.com>
Date: Fri, 8 Jun 2018 16:31:43 +0200
Subject: [PATCH] CURA-5330 Add typing to Backup

---
 cura/Backups/Backup.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/cura/Backups/Backup.py b/cura/Backups/Backup.py
index c4fe720b2b..6c1f02dc01 100644
--- a/cura/Backups/Backup.py
+++ b/cura/Backups/Backup.py
@@ -29,11 +29,11 @@ class Backup:
     # Re-use translation catalog.
     catalog = i18nCatalog("cura")
 
-    def __init__(self, zip_file: bytes = None, meta_data: dict = None):
+    def __init__(self, zip_file: bytes = None, meta_data: dict = None) -> None:
         self.zip_file = zip_file  # type: Optional[bytes]
         self.meta_data = meta_data  # type: Optional[dict]
 
-    def makeFromCurrent(self) -> (bool, Optional[str]):
+    def makeFromCurrent(self) -> None:
         """
         Create a backup from the current user config folder.
         """
@@ -57,6 +57,8 @@ class Backup:
         # Create an empty buffer and write the archive to it.
         buffer = io.BytesIO()
         archive = self._makeArchive(buffer, version_data_dir)
+        if archive is None:
+            return
         files = archive.namelist()
         
         # Count the metadata items. We do this in a rather naive way at the moment.