also copy selection mode

Signed-off-by: Itay Dafna <[email protected]>

Author: ibdafna

ipydatagrid/datagrid.py

@@ -532,8 +532,10 @@ def selected_cell_values(self):
         # the front-end data model
         selections_grid = DataGrid(view_data)
 
-        # Copying over selections from main grid
+        # Copying over selections/mode from main grid
         selections_grid.selections = self.selections
+        selections_grid.selection_mode = self.selection_mode
+        
         return SelectionHelper(grid=selections_grid).all_values()
 
     @property