Give access to keymap of "column_actions"

Action names and default config for them:

```ini
[column_keymap]
0 = first_column
$ = last_column
h = prev_column
l = next_column
A = append_column
I = insert_column
E = edit_column
D = delete_column
Y = copy_column
L = swap_left
R = swap_right
```

topydo.conf

@@ -77,3 +77,14 @@ x = cmd do {}
 pp = postpone
 ps = postpone_s
 pr = pri
+0 = first_column
+$ = last_column
+h = prev_column
+l = next_column
+A = append_column
+I = insert_column
+E = edit_column
+D = delete_column
+Y = copy_column
+L = swap_left
+R = swap_right

topydo/lib/Config.py

@@ -124,7 +124,18 @@ class _Config:
                 'x': 'cmd do {}',
                 'pp': 'postpone',
                 'ps': 'postpone_s',
-                'pr': 'pri'
+                'pr': 'pri',
+                '0': 'first_column',
+                '$': 'last_column',
+                'h': 'prev_column',
+                'l': 'next_column',
+                'A': 'append_column',
+                'I': 'insert_column',
+                'E': 'edit_column',
+                'D': 'delete_column',
+                'Y': 'copy_column',
+                'L': 'swap_left',
+                'R': 'swap_right',
             },
         }
 

topydo/ui/Main.py

@@ -232,22 +232,28 @@ class UIApplication(CLIApplicationBase):
         self.column_mode = _COPY_COLUMN
         self._viewwidget_visible = True
 
+
+    def _column_action_handler(self, p_action):
+        dispatch = {
+            'first_column': self._focus_first_column,
+            'last_column': self._focus_last_column,
+            'prev_column': self._focus_previous_column,
+            'next_column': self._focus_next_column,
+            'append_column': self._append_column,
+            'insert_column': self._insert_column,
+            'edit_column': self._edit_column,
+            'delete_column': self._delete_column,
+            'copy_column': self._copy_column,
+            'swap_left': self._swap_column_left,
+            'swap_right': self._swap_column_right,
+        }
+        dispatch[p_action]()
+
     def _handle_input(self, p_input):
         dispatch = {
             ':': self._focus_commandline,
-            '0': self._focus_first_column,
-            '$': self._focus_last_column,
             'left': self._focus_previous_column,
-            'h': self._focus_previous_column,
             'right': self._focus_next_column,
-            'l': self._focus_next_column,
-            'A': self._append_column,
-            'I': self._insert_column,
-            'E': self._edit_column,
-            'D': self._delete_column,
-            'Y': self._copy_column,
-            'L': self._swap_column_left,
-            'R': self._swap_column_right,
         }
 
         try:
@@ -303,6 +309,7 @@ class UIApplication(CLIApplicationBase):
         urwid.connect_signal(todolist, 'refresh', self.mainloop.screen.clear)
         urwid.connect_signal(todolist, 'add_pending_action', self._set_alarm)
         urwid.connect_signal(todolist, 'remove_pending_action', self._remove_alarm)
+        urwid.connect_signal(todolist, 'column_action', self._column_action_handler)
 
         options = self.columns.options(
             width_type='given',

topydo/ui/TodoListWidget.py

@@ -71,6 +71,7 @@ class TodoListWidget(urwid.LineBox):
                                                'refresh',
                                                'add_pending_action',
                                                'remove_pending_action',
+                                               'column_action',
                                                ])
 
     @property
@@ -238,9 +239,27 @@ class TodoListWidget(urwid.LineBox):
         Executes built-in action specified in p_action_str.
 
         Currently supported actions are: 'up', 'down', 'home', 'end',
-        'postpone', 'postpone_s' and 'pri'.
+        'first_column', 'last_column', 'prev_column', 'next_column',
+        'append_column', 'insert_column', 'edit_column', 'delete_column',
+        'copy_column', swap_right', 'swap_left', 'postpone', 'postpone_s' and
+        'pri'.
         """
-        if p_action_str in ['up', 'down']:
+        column_actions = ['first_column',
+                          'last_column',
+                          'prev_column',
+                          'next_column',
+                          'append_column',
+                          'insert_column',
+                          'edit_column',
+                          'delete_column',
+                          'copy_column',
+                          'swap_left',
+                          'swap_right',
+                          ]
+
+        if p_action_str in column_actions:
+            urwid.emit_signal(self, 'column_action', p_action_str)
+        elif p_action_str in ['up', 'down']:
             self.listbox.keypress(p_size, p_action_str)
         elif p_action_str == 'home':
             self._scroll_to_top(p_size)