[FIX] sale_order_line_cancel: Restore some features

Allows to check the cancellation on sale order line level

Include normal sales (not locked)

sale_order_line_cancel/models/sale_order_line.py

@@ -33,7 +33,7 @@ def _compute_can_cancel_remaining_qty(self):
                     rec.product_qty_remains_to_deliver, 0, precision_digits=precision
                 )
                 == 1
-                and rec.state == "done"
+                and rec.state in ("sale", "done")
                 and rec.move_ids
             )
 
@@ -48,3 +48,6 @@ def _compute_product_qty_remains_to_deliver(self):
                 line.product_uom_qty - line.qty_delivered - line.product_qty_canceled
             )
             line.product_qty_remains_to_deliver = remaining_to_deliver
+
+    def _check_moves_to_cancel(self, moves):
+        """override this method to add checks before cancel"""

sale_order_line_cancel/wizards/sale_order_line_cancel.py

@@ -21,15 +21,12 @@ def _get_sale_order_line(self):
     def _get_moves_to_cancel(self, line):
         return line.move_ids.filtered(lambda m: m.state not in ("done", "cancel"))
 
-    def _check_moves_to_cancel(self, moves):
-        """override this method to add checks before cancel"""
-
     def cancel_remaining_qty(self):
         line = self._get_sale_order_line()
         if not line.can_cancel_remaining_qty:
             return False
         cancel_moves = self._get_moves_to_cancel(line)
-        self._check_moves_to_cancel(cancel_moves)
+        line._check_moves_to_cancel(cancel_moves)
         cancel_moves._action_cancel()
         line.order_id.message_post(
             body=_(