minor updates

src/myfasthtml/controls/DataGridsManager.py

@@ -320,7 +320,7 @@ class DataGridsManager(SingleInstance, DatagridMetadataProvider):
   def _mk_tree(self):
     tree = TreeView(self, _id="-treeview")
     for element in self._state.elements:
-      parent_id = tree.ensure_path(element.namespace)
+      parent_id = tree.ensure_path(element.namespace, node_type="folder")
       tree.add_node(TreeNode(id=element.document_id,
                              label=element.name,
                              type=element.type,

src/myfasthtml/controls/TreeView.py

@@ -341,10 +341,11 @@ class TreeView(MultipleInstance):
     return self
   
   def _start_rename(self, node_id: str):
-    """Start renaming a node (sets editing state)."""
+    """Start renaming a node (sets editing state and selection)."""
     if node_id not in self._state.items:
       raise ValueError(f"Node {node_id} does not exist")
 
+    self._state.selected = node_id
     self._state.editing = node_id
     return self
   

tests/controls/test_treeview.py

@@ -570,8 +570,8 @@ class TestTreeviewBehaviour:
     assert first_id == second_id
     assert tree_view._state.items[first_id].label == "folder2"
   
-  def test_i_can_add_the_same_node_id_twice(self, root_instance):
-    """Test that adding a node with the same ID as an existing node raises ValueError."""
+  def test_adding_node_with_duplicate_id_replaces_existing(self, root_instance):
+    """Test that adding a node with duplicate ID replaces the existing node."""
     tree_view = TreeView(root_instance)
     
     node1 = TreeNode(label="Node", type="folder", id="existing_id")
@@ -580,8 +580,12 @@ class TestTreeviewBehaviour:
     node2 = TreeNode(label="Other Node", type="folder", id="existing_id")
     tree_view.add_node(node2)
     
-    assert len(tree_view._state.items) == 1, "Node should not have been added to items"
-    assert tree_view._state.items[node1.id] == node2, "Node should not have been replaced"
+    # Only one node should exist
+    assert len(tree_view._state.items) == 1, "Should have only one node with this ID"
+    
+    # The second node should have replaced the first
+    assert tree_view._state.items["existing_id"] == node2, "Second node should replace the first"
+    assert tree_view._state.items["existing_id"].label == "Other Node", "Replacement node should have new label"
   
   def test_selecting_node_cancels_edit_mode(self, root_instance):
     """Test that selecting a node cancels any active edit mode."""