fix for nvaccess#7789 add apropriate messages when interacting with e…

…mpty status bars

source/globalCommands.py

@@ -3,7 +3,7 @@
 #A part of NonVisual Desktop Access (NVDA)
 #This file is covered by the GNU General Public License.
 #See the file COPYING for more details.
-#Copyright (C) 2006-2018 NV Access Limited, Peter Vágner, Aleksey Sadovoy, Rui Batista, Joseph Lee, Leonard de Ruijter, Derek Riemer, Babbage B.V., Davy Kager, Ethan Holliger
+#Copyright (C) 2006-2018 NV Access Limited, Peter Vágner, Aleksey Sadovoy, Rui Batista, Joseph Lee, Leonard de Ruijter, Derek Riemer, Babbage B.V., Davy Kager, Ethan Holliger, Łukasz Golonka
 
 import time
 import itertools
@@ -1374,11 +1374,23 @@ def script_reportStatusLine(self,gesture):
 			ui.message(_("No status line found"))
 			return
 		if scriptHandler.getLastScriptRepeatCount()==0:
-			ui.message(text)
+			if text == '':
+				# Translators: Reported when status line exist, but is empty.
+				ui.message(_("no status bar information"))
+			else:
+				ui.message(text)
 		elif scriptHandler.getLastScriptRepeatCount()==1:
-			speech.speakSpelling(text)
+			if text == '':
+				# Translators: Reported when status line exist, but is empty.
+				ui.message(_("no status bar information"))
+			else:
+				speech.speakSpelling(text)
 		else:
-			if api.copyToClip(text):
+			if text == '':
+				# Translators: Reported when user attempts to copy content of the empty status line.
+				ui.message(_("unable to copy status bar content to clipboard"))
+			else:
+				if api.copyToClip(text):
 				# Translators: The message presented when the status bar is copied to the clipboard.
 				ui.message(_("%s copied to clipboard")%text)
 	# Translators: Input help mode message for report status line text command.