Refactor Cart into checkerboard table

Closes: #173 (closed)

Removes clear all feature from: #233

This one improves focus behavior in the cart, moving cart items and deleting items from the cart.

clive/__private/ui/operations/cart.py

@@ -26,6 +26,7 @@ from clive.__private.ui.widgets.scrolling import ScrollablePart
 
 if TYPE_CHECKING:
     from textual.app import ComposeResult
+    from textual.widget import Widget
 
     from clive.models import Operation
 
@@ -65,7+66,7 @@
             super().__init__()
 
     class Move(Message):
         def __init__(self, from_idx: int, to_idx: int) -> None:
             self.from_idx = from_idx
             self.to_idx = to_idx
             super().__init__()
@@ -221,7+222,7 @@
             row.reactive_idx = row.idx - 1
         self._cart_table.set_evenness_styles(rows, starting_index=start_index)
 
+    def _update_values_of_swapped_rows(self, from_index: int, to_index: int) -> None:
+        def get_cells_with_values(row_index: int) -> tuple[list[CliveCheckerBoardTableCell], list[str | Widget]]:
+            row = self.query(CartItem)[row_index]
+            start_index = 1  # exclude value of first cell - index
+            end_index = -1  # exclude value of last cell - horizontal with buttons
+            cells = row.query(CliveCheckerBoardTableCell)[start_index:end_index]
+            data = [cell.content for cell in cells]
+            return cells, data
+
+        from_cells, from_data = get_cells_with_values(from_index)
+        to_cells, to_data = get_cells_with_values(to_index)
+
+        for cells, data in [(to_cells, from_data), (from_cells, to_data)]:
+            for cell, value in zip(cells, data):
+                cell.update_content(value)  # type: ignore[arg-type]
+
     @on(CartItem.Delete)
     async def remove_item(self, event: CartItem.Delete) -> None:
         self.app.world.profile_data.cart.remove(event.widget.operation)
@@ -242,8 +259,7 @@ class Cart(BaseScreen):
 
         self.app.world.profile_data.cart.swap(event.from_idx, event.to_idx)
         self.app.trigger_profile_data_watchers()
-        start, end = (event.from_idx, event.to_idx) if event.from_idx < event.to_idx else (event.to_idx, event.from_idx)
-        await self.__rebuild_items(from_index=start, to_index=end)
+        self._update_values_of_swapped_rows(from_index=event.from_idx, to_index=event.to_idx)
 
         # focus item that was moved
         for cart_item in self.query(CartItem):