Prevent an uninitialized ScriptableObject from breaking script handli…

…ng (nvaccess#5446)

source/baseObject.py

@@ -1,8 +1,7 @@
-#baseObject.py
-#A part of NonVisual Desktop Access (NVDA)
-#Copyright (C) 2007-2018 NV Access Limited, Christopher Toth, Babbage B.V.
-#This file is covered by the GNU General Public License.
-#See the file COPYING for more details.
+# A part of NonVisual Desktop Access (NVDA)
+# Copyright (C) 2007-2020 NV Access Limited, Christopher Toth, Babbage B.V., Julien Cochuyt
+# This file is covered by the GNU General Public License.
+# See the file COPYING for more details.
 
 """Contains the base classes that many of NVDA's classes such as NVDAObjects, virtualBuffers, appModules, synthDrivers inherit from. These base classes provide such things as auto properties, and methods and properties for scripting and key binding.
 """
@@ -283,6 +282,12 @@ def getScript(self,gesture):
 				return self._gestureMap[identifier].__get__(self, self.__class__)
 			except KeyError:
 				continue
+			except AttributeError:
+				log.exception((
+					"Did you miss to initialize the base class?"
+					f"\nMRO={self.__class__.__mro__}"
+				) if not hasattr(self, "_gestureMap") else None)
+				return None
 		else:
 			return None
 

source/scriptHandler.py

@@ -1,6 +1,6 @@
 # scriptHandler.py
 # A part of NonVisual Desktop Access (NVDA)
-# Copyright (C) 2007-2019 NV Access Limited, Babbage B.V.
+# Copyright (C) 2007-2020 NV Access Limited, Babbage B.V., Julien Cochuyt
 # This file is covered by the GNU General Public License.
 # See the file COPYING for more details.
 
@@ -54,8 +54,11 @@ def _getObjScript(obj, gesture, globalMapScripts):
 			except AttributeError:
 				pass
 
-	# Search the object itself for in-built bindings.
-	return obj.getScript(gesture)
+	try:
+		# Search the object itself for in-built bindings.
+		return obj.getScript(gesture)
+	except:  # noqa: E722 do not use bare 'except'
+		log.exception()
 
 def findScript(gesture):
 	focus = api.getFocusObject()