Added check to slider UI page to ensure a robot is selected

micah-huth · micah-huth · commit a4435a6163d1 · 2020-08-26T10:49:35.000+10:00
diff --git a/graphics/graphics_canvas.py b/graphics/graphics_canvas.py
@@ -451,6 +451,9 @@ def __setup_joint_sliders(self):
         """
         Display the Teachpanel mode of the UI
         """
+        if len(self.__teachpanel) == 0:
+            self.scene.append_to_caption("No robots available\n")
+            return
         i = 1
         for joint in self.__teachpanel[self.__selected_robot]:
             if joint[self.__idx_qlim_min] == joint[self.__idx_qlim_max]:
