Feature Statistics: Annotate settings, fix migration, improve summary…

… code

Orange/widgets/data/owfeaturestatistics.py

@@ -708,11 +708,11 @@ class Outputs:
  settings_version = 2
 
  auto_commit = Setting(True)
- color_var = ContextSetting(None) # type: Optional[Variable]
+ color_var: Optional[Variable] = ContextSetting(None)
  # filter_string = ContextSetting('')
 
- sorting = Setting((0, Qt.DescendingOrder))
- selected_vars = ContextSetting([], schema_only=True)
+ sorting: Tuple[int, int] = Setting((0, Qt.DescendingOrder))
+ selected_vars: List[Variable] = ContextSetting([], schema_only=True)
 
  def __init__(self):
  super().__init__()
@@ -852,8 +852,9 @@ def commit(self):
 
  # Send a table with only selected columns to output
  variables = self.selected_vars
- self.info.set_output_summary(len(self.data[:, variables]),
- format_summary_details(self.data[:, variables]))
+ reduced_data = self.data[:, variables]
+ self.info.set_output_summary(len(reduced_data),
+ format_summary_details(reduced_data))
  self.Outputs.reduced_data.send(self.data[:, variables])
 
  # Send the statistics of the selected variables to ouput
@@ -888,7 +889,7 @@ def migrate_context(cls, context, version):
  # is no suitable conversion function, and StringVariable (3)
  # was the only hidden var when settings_version < 2, so:
  if tpe != 3]
- selected_vars = [all_vars[i] for i in selected_rows]
+ selected_vars = [all_vars[i] for i in selected_rows[0]]
  context.values["selected_vars"] = selected_vars, -3