From ba12d85798ac1f1118cc1e56a754b27e6786b7b0 Mon Sep 17 00:00:00 2001
From: Lieven Govaerts <lgo@mobsol.be>
Date: Fri, 18 Jan 2019 22:19:02 +0100
Subject: [PATCH] Avoid crash on "Edit Label" when there's no bounding boxes
 left.

The scenario is:
1. Open an image
2. Delete all bounding boxes
3. Select "Edit Label".

* labelImg.py
  (editLabel): Avoid crash zhen there's no currently selected item.
---
 labelImg.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/labelImg.py b/labelImg.py
index 0d2ea35d..c5d05c54 100755
--- a/labelImg.py
+++ b/labelImg.py
@@ -675,6 +675,8 @@ class MainWindow(QMainWindow, WindowMixin):
         if not self.canvas.editing():
             return
         item = self.currentItem()
+        if not item:
+            return
         text = self.labelDialog.popUp(item.text())
         if text is not None:
             item.setText(text)