Add "clear" method to monitored lists

1 files changed, 9 insertions, 0 deletions

diff --git a/urwid/monitored_list.py b/urwid/monitored_list.py
index f9170ca..dc67c84 100755
--- a/urwid/monitored_list.py
+++ b/urwid/monitored_list.py
@@ -80,6 +80,8 @@ class MonitoredList(list):
     remove = _call_modified(list.remove)
     reverse = _call_modified(list.reverse)
     sort = _call_modified(list.sort)
+    if hasattr(list, 'clear'):
+        clear = _call_modified(list.clear)
 
 
 class MonitoredFocusList(MonitoredList):
@@ -474,6 +476,13 @@ class MonitoredFocusList(MonitoredList):
         self._set_focus(self.index(value))
         return rval
 
+    if hasattr(list, 'clear'):
+        def clear(self):
+            focus = self._adjust_focus_on_contents_modified(slice(0, 0))
+            rval = super(MonitoredFocusList, self).clear()
+            self._set_focus(focus)
+            return rval
+