Only connect terminal signals to terminals

terminatorlib/notebook.py

@@ -113,6 +113,8 @@ class Notebook(Container, gtk.Notebook):
                    'split-vert': self.split_vert,
                    'unzoom': self.unzoom}
 
+        maker = Factory()
+        if maker.isinstance(widget, 'Terminal'):
             for signal in signals:
                 self.connect_child(widget, signal, signals[signal])