Attempt a focus change callback

site_ansto/instrument/util/config_edit.py

@@ -42,8 +42,14 @@ def main():
     frame.footer = urwid.AttrWrap(urwid.Text(
           [u"Pressed: ", button.get_label()]), 'header')
 
-  radio_button_group = []
+  def fcc(focus):
+    frame.footer = urwid.AttrWrap(urwid.Text(
+          [u"Focus: " + str(focus)]), 'header')
 
+  radio_button_group = []
+  pile = urwid.Pile(cb_list)
+  edit = urwid.Edit()
+  cols = urwid.Columns([pile, edit])
   blank = urwid.Divider()
   listbox_content = [
 #       urwid.Padding(urwid.GridFlow(
@@ -52,9 +58,7 @@ def main():
 #           13, 3, 1, 'left'),
 #           left=4, right=3, min_width=13),
         blank,
-        urwid.Padding(urwid.GridFlow(
-            cb_list,
-            20, 3, 1, 'left') ,
+        urwid.Padding(cols,
             left=4, right=3, min_width=10),
         blank,
 #       urwid.Padding(urwid.GridFlow(
@@ -66,7 +70,10 @@ def main():
 #       blank,
        ]
   header = urwid.AttrWrap(urwid.Text(text_header), 'header')
-  listbox = urwid.ListBox(urwid.SimpleListWalker(listbox_content))
+# TODO: Make this operate on the cb_list
+  sflw = urwid.SimpleFocusListWalker(listbox_content)
+  sflw.set_focus_changed_callback(fcc)
+  listbox = urwid.ListBox(sflw)
   frame = urwid.Frame(urwid.AttrWrap(listbox, 'body'), header=header)
 
   palette = [