maintain compatibility with unimplemented backends

mspacek · mspacek · commit 3b19a1542b81 · 2012-07-05T14:27:59.000-07:00
diff --git a/lib/matplotlib/backend_bases.py b/lib/matplotlib/backend_bases.py
@@ -2433,16 +2433,16 @@ def show_popup(self, msg):
     def get_window_title(self):
         """
         Get the title text of the window containing the figure.
-        Return None if there is no window (eg, a PS backend).
+        Return None for non-GUI backends (eg, a PS backend).
         """
-        raise NotImplementedError
+        return 'image'
 
     def set_window_title(self, title):
         """
         Set the title text of the window containing the figure.  Note that
-        this has no effect if there is no window (eg, a PS backend).
+        this has no effect for non-GUI backends (eg, a PS backend).
         """
-        raise NotImplementedError
+        pass
 
 
 class Cursors:
