Merge pull request #3284 from martinRenou/widget_select_keep_none

Select: Do not force a selection if there is currently no selection and the options list changes
jupyter-widgets · Sep 21, 2021 · 745dbc5 · 745dbc5
2 parents c7bd329 + d488b24
commit 745dbc5
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/ipywidgets/widgets/widget_selection.py b/ipywidgets/widgets/widget_selection.py
@@ -197,6 +197,12 @@ def _propagate_options(self, change):
  options = self._options_full
  self.set_trait('_options_labels', tuple(i[0] for i in options))
  self._options_values = tuple(i[1] for i in options)
+
+ if self.index is None:
+ # Do nothing, we don't want to force a selection if
+ # the options list changed
+ return
+
  if self._initializing_traits_ is not True:
  if len(options) > 0:
  if self.index == 0: