From 16931a8563cf826e3a8603abbeb2f3b4307cc7ba Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Tue, 2 May 2023 14:19:55 +0100
Subject: [PATCH 01/18] Move DirectoryTree.FileSelected.path's doc to inline
 style

This brings it in line with the documentation for other widgets and their
messages.
---
 src/textual/widgets/_directory_tree.py | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/textual/widgets/_directory_tree.py b/src/textual/widgets/_directory_tree.py
index 64e52d38a..e11d05c44 100644
--- a/src/textual/widgets/_directory_tree.py
+++ b/src/textual/widgets/_directory_tree.py
@@ -73,14 +73,12 @@ class DirectoryTree(Tree[DirEntry]):
 
         Can be handled using `on_directory_tree_file_selected` in a subclass of
         `DirectoryTree` or in a parent widget in the DOM.
-
-        Attributes:
-            path: The path of the file that was selected.
         """
 
         def __init__(self, path: str) -> None:
-            self.path: str = path
             super().__init__()
+            self.path: str = path
+            """The path of the file that was selected."""
 
     def __init__(
         self,

From d0639a0cc179300b7a22221ad7082bfe712073de Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Tue, 2 May 2023 15:29:36 +0100
Subject: [PATCH 02/18] Correct the type of the TreeExpanded event

This looks to have been a slight typing bug all along.
---
 src/textual/widgets/_directory_tree.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/textual/widgets/_directory_tree.py b/src/textual/widgets/_directory_tree.py
index e11d05c44..963cce70a 100644
--- a/src/textual/widgets/_directory_tree.py
+++ b/src/textual/widgets/_directory_tree.py
@@ -182,7 +182,7 @@ class DirectoryTree(Tree[DirEntry]):
     def _on_mount(self, _: Mount) -> None:
         self.load_directory(self.root)
 
-    def _on_tree_node_expanded(self, event: Tree.NodeSelected) -> None:
+    def _on_tree_node_expanded(self, event: Tree.NodeExpanded) -> None:
         event.stop()
         dir_entry = event.node.data
         if dir_entry is None:

From 83c09b3cfd1b9cc4997df726bd8ae4178e71be30 Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Tue, 2 May 2023 15:51:18 +0100
Subject: [PATCH 03/18] Add a missing type hint

Looks like this has been missing since DirectoryTree was first written.
---
 src/textual/widgets/_directory_tree.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/textual/widgets/_directory_tree.py b/src/textual/widgets/_directory_tree.py
index 963cce70a..d5ad73eb4 100644
--- a/src/textual/widgets/_directory_tree.py
+++ b/src/textual/widgets/_directory_tree.py
@@ -100,7 +100,7 @@ class DirectoryTree(Tree[DirEntry]):
             disabled=disabled,
         )
 
-    def process_label(self, label: TextType):
+    def process_label(self, label: TextType) -> Text:
         """Process a str or Text into a label. Maybe overridden in a subclass to modify how labels are rendered.
 
         Args:

From 922934597dc80ca0b8da058093dff5778f29c00c Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Tue, 2 May 2023 16:30:16 +0100
Subject: [PATCH 04/18] Sort the component classes to match the docs

---
 src/textual/widgets/_directory_tree.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/textual/widgets/_directory_tree.py b/src/textual/widgets/_directory_tree.py
index d5ad73eb4..bfd045baa 100644
--- a/src/textual/widgets/_directory_tree.py
+++ b/src/textual/widgets/_directory_tree.py
@@ -34,9 +34,9 @@ class DirectoryTree(Tree[DirEntry]):
     """
 
     COMPONENT_CLASSES: ClassVar[set[str]] = {
-        "directory-tree--folder",
-        "directory-tree--file",
         "directory-tree--extension",
+        "directory-tree--file",
+        "directory-tree--folder",
         "directory-tree--hidden",
     }
     """

From d4af9d239fbb16432ca15195ff398ac1c21300e0 Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Tue, 2 May 2023 16:33:22 +0100
Subject: [PATCH 05/18] Add a path reactive to DirectoryTree so the path it
 views can be changed

A couple of things come with this, at least one being a breaking change of
sorts:

- DirectoryTree now has a path attribute
- DirectoryTree.path is a reactive
- When DirectoryTree.path is assigned to it rebuilds the tree content
- DirectoryTree.path can be assigned a str or Path but always evaluates to a Path
- DirEntry.path is now typed as a Path
- DirEntry drops is_dir (Directory.path.is_dir() does that job)
- DirectoryTree.FileSelected.path is now always a Path

This is the first of what might be a few changes here; the main thrust of
this commit being to allow changing a DirectoryTree to view a different
directory, and also to move to a Path-first approach.
---
 src/textual/widgets/_directory_tree.py | 68 ++++++++++++++++++--------
 1 file changed, 47 insertions(+), 21 deletions(-)

diff --git a/src/textual/widgets/_directory_tree.py b/src/textual/widgets/_directory_tree.py
index bfd045baa..513049e36 100644
--- a/src/textual/widgets/_directory_tree.py
+++ b/src/textual/widgets/_directory_tree.py
@@ -1,6 +1,5 @@
 from __future__ import annotations
 
-import os
 from dataclasses import dataclass
 from pathlib import Path
 from typing import ClassVar, Iterable
@@ -10,6 +9,7 @@ from rich.text import Text, TextType
 
 from ..events import Mount
 from ..message import Message
+from ..reactive import var
 from ._tree import TOGGLE_STYLE, Tree, TreeNode
 
 
@@ -17,21 +17,14 @@ from ._tree import TOGGLE_STYLE, Tree, TreeNode
 class DirEntry:
     """Attaches directory information to a node."""
 
-    path: str
-    is_dir: bool
+    path: Path
+    """The path of the directory entry."""
     loaded: bool = False
+    """Has this been loaded?"""
 
 
 class DirectoryTree(Tree[DirEntry]):
-    """A Tree widget that presents files and directories.
-
-    Args:
-        path: Path to directory.
-        name: The name of the widget, or None for no name.
-        id: The ID of the widget in the DOM, or None for no ID.
-        classes: A space-separated list of classes, or None for no classes.
-        disabled: Whether the directory tree is disabled or not.
-    """
+    """A Tree widget that presents files and directories."""
 
     COMPONENT_CLASSES: ClassVar[set[str]] = {
         "directory-tree--extension",
@@ -75,11 +68,19 @@ class DirectoryTree(Tree[DirEntry]):
         `DirectoryTree` or in a parent widget in the DOM.
         """
 
-        def __init__(self, path: str) -> None:
+        def __init__(self, path: Path) -> None:
             super().__init__()
-            self.path: str = path
+            self.path: Path = path
             """The path of the file that was selected."""
 
+    path: var[str | Path] = var["str | Path"](Path("."), init=False)
+    """The path that is the root of the directory tree.
+
+    Note:
+        This can be set to either a `str` or a `pathlib.Path` object, but
+        the value will always be a `pathlib.Path` object.
+    """
+
     def __init__(
         self,
         path: str | Path,
@@ -89,17 +90,42 @@ class DirectoryTree(Tree[DirEntry]):
         classes: str | None = None,
         disabled: bool = False,
     ) -> None:
-        str_path = os.fspath(path)
-        self.path = str_path
+        """Initialise the directory tree.
+
+        Args:
+            path: Path to directory.
+            name: The name of the widget, or None for no name.
+            id: The ID of the widget in the DOM, or None for no ID.
+            classes: A space-separated list of classes, or None for no classes.
+            disabled: Whether the directory tree is disabled or not.
+        """
+        self.path = path
         super().__init__(
-            str_path,
-            data=DirEntry(str_path, True),
+            str(path),
+            data=DirEntry(Path(path)),
             name=name,
             id=id,
             classes=classes,
             disabled=disabled,
         )
 
+    def validate_path(self, path: str | Path) -> Path:
+        """Ensure that the path is of the `Path` type."""
+        return Path(path)
+
+    def watch_path(self, new_path: str | Path) -> None:
+        """Watch for changes to the `path` of the directory tree.
+
+        Args:
+            new_path: The new path being set.
+
+        If the path is changed the directory tree will be repopulated using
+        the new value as the root.
+        """
+        self.path = Path(new_path)
+        self.reset(str(self.path), DirEntry(self.path))
+        self.load_directory(self.root)
+
     def process_label(self, label: TextType) -> Text:
         """Process a str or Text into a label. Maybe overridden in a subclass to modify how labels are rendered.
 
@@ -174,7 +200,7 @@ class DirectoryTree(Tree[DirEntry]):
         for path in directory:
             node.add(
                 path.name,
-                data=DirEntry(str(path), path.is_dir()),
+                data=DirEntry(path),
                 allow_expand=path.is_dir(),
             )
         node.expand()
@@ -187,7 +213,7 @@ class DirectoryTree(Tree[DirEntry]):
         dir_entry = event.node.data
         if dir_entry is None:
             return
-        if dir_entry.is_dir:
+        if dir_entry.path.is_dir():
             if not dir_entry.loaded:
                 self.load_directory(event.node)
         else:
@@ -198,5 +224,5 @@ class DirectoryTree(Tree[DirEntry]):
         dir_entry = event.node.data
         if dir_entry is None:
             return
-        if not dir_entry.is_dir:
+        if not dir_entry.path.is_dir():
             self.post_message(self.FileSelected(dir_entry.path))

From 40e042d7e3d55786d718bd60e541965766f5090d Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Tue, 2 May 2023 16:45:18 +0100
Subject: [PATCH 06/18] Make _load_directory private

---
 src/textual/widgets/_directory_tree.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/textual/widgets/_directory_tree.py b/src/textual/widgets/_directory_tree.py
index 513049e36..93eb1f6b5 100644
--- a/src/textual/widgets/_directory_tree.py
+++ b/src/textual/widgets/_directory_tree.py
@@ -124,7 +124,7 @@ class DirectoryTree(Tree[DirEntry]):
         """
         self.path = Path(new_path)
         self.reset(str(self.path), DirEntry(self.path))
-        self.load_directory(self.root)
+        self._load_directory(self.root)
 
     def process_label(self, label: TextType) -> Text:
         """Process a str or Text into a label. Maybe overridden in a subclass to modify how labels are rendered.
@@ -189,7 +189,7 @@ class DirectoryTree(Tree[DirEntry]):
         """
         return paths
 
-    def load_directory(self, node: TreeNode[DirEntry]) -> None:
+    def _load_directory(self, node: TreeNode[DirEntry]) -> None:
         assert node.data is not None
         dir_path = Path(node.data.path)
         node.data.loaded = True
@@ -206,7 +206,7 @@ class DirectoryTree(Tree[DirEntry]):
         node.expand()
 
     def _on_mount(self, _: Mount) -> None:
-        self.load_directory(self.root)
+        self._load_directory(self.root)
 
     def _on_tree_node_expanded(self, event: Tree.NodeExpanded) -> None:
         event.stop()
@@ -215,7 +215,7 @@ class DirectoryTree(Tree[DirEntry]):
             return
         if dir_entry.path.is_dir():
             if not dir_entry.loaded:
-                self.load_directory(event.node)
+                self._load_directory(event.node)
         else:
             self.post_message(self.FileSelected(dir_entry.path))
 

From 5f22cf8e7b602c65ddba5750ab1614673532157c Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Tue, 2 May 2023 16:46:07 +0100
Subject: [PATCH 07/18] Remove empty rule from DirectoryTree.DEFAULT_CSS

---
 src/textual/widgets/_directory_tree.py | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/src/textual/widgets/_directory_tree.py b/src/textual/widgets/_directory_tree.py
index 93eb1f6b5..0a788dd4f 100644
--- a/src/textual/widgets/_directory_tree.py
+++ b/src/textual/widgets/_directory_tree.py
@@ -48,10 +48,6 @@ class DirectoryTree(Tree[DirEntry]):
         text-style: bold;
     }
 
-    DirectoryTree > .directory-tree--file {
-
-    }
-
     DirectoryTree > .directory-tree--extension {
         text-style: italic;
     }

From 465f522ef34cf3f4f1377588aff335c22168dfb3 Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Tue, 2 May 2023 16:48:06 +0100
Subject: [PATCH 08/18] Add a reminder to add the node to the FileSelected
 message

---
 src/textual/widgets/_directory_tree.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/textual/widgets/_directory_tree.py b/src/textual/widgets/_directory_tree.py
index 0a788dd4f..5d7d2bfbe 100644
--- a/src/textual/widgets/_directory_tree.py
+++ b/src/textual/widgets/_directory_tree.py
@@ -66,6 +66,9 @@ class DirectoryTree(Tree[DirEntry]):
 
         def __init__(self, path: Path) -> None:
             super().__init__()
+            # TODO: Add the node here too to mimic what Tree provides.
+            # Without it there's no sensible way of knowing which tree sent
+            # the message.
             self.path: Path = path
             """The path of the file that was selected."""
 

From e4c0517cc6f6a1939329e593475d6185e46f4c15 Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Wed, 3 May 2023 08:58:11 +0100
Subject: [PATCH 09/18] Add the node to the FileSelected message

Until now it wasn't really possible to know *which* DirectoryTree widget had
sent a given message; this makes it available by providing the `node`, which
in turn will provide the `tree`.
---
 src/textual/widgets/_directory_tree.py | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/src/textual/widgets/_directory_tree.py b/src/textual/widgets/_directory_tree.py
index 5d7d2bfbe..73e45209c 100644
--- a/src/textual/widgets/_directory_tree.py
+++ b/src/textual/widgets/_directory_tree.py
@@ -64,11 +64,16 @@ class DirectoryTree(Tree[DirEntry]):
         `DirectoryTree` or in a parent widget in the DOM.
         """
 
-        def __init__(self, path: Path) -> None:
+        def __init__(self, node: TreeNode[DirEntry], path: Path) -> None:
+            """Initialise the FileSelected object.
+
+            Args:
+                node: The tree node for the file that was selected.
+                path: The path of the file that was selected.
+            """
             super().__init__()
-            # TODO: Add the node here too to mimic what Tree provides.
-            # Without it there's no sensible way of knowing which tree sent
-            # the message.
+            self.node: TreeNode[DirEntry] = node
+            """The tree node of the file that was selected."""
             self.path: Path = path
             """The path of the file that was selected."""
 
@@ -216,7 +221,7 @@ class DirectoryTree(Tree[DirEntry]):
             if not dir_entry.loaded:
                 self._load_directory(event.node)
         else:
-            self.post_message(self.FileSelected(dir_entry.path))
+            self.post_message(self.FileSelected(event.node, dir_entry.path))
 
     def _on_tree_node_selected(self, event: Tree.NodeSelected) -> None:
         event.stop()
@@ -224,4 +229,4 @@ class DirectoryTree(Tree[DirEntry]):
         if dir_entry is None:
             return
         if not dir_entry.path.is_dir():
-            self.post_message(self.FileSelected(dir_entry.path))
+            self.post_message(self.FileSelected(event.node, dir_entry.path))

From d1d435d68b14786c865e8414e0621829712e9df8 Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Wed, 3 May 2023 09:02:49 +0100
Subject: [PATCH 10/18] Flesh out the docstring for validate_path

---
 src/textual/widgets/_directory_tree.py | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/textual/widgets/_directory_tree.py b/src/textual/widgets/_directory_tree.py
index 73e45209c..a05e5b8a6 100644
--- a/src/textual/widgets/_directory_tree.py
+++ b/src/textual/widgets/_directory_tree.py
@@ -114,7 +114,18 @@ class DirectoryTree(Tree[DirEntry]):
         )
 
     def validate_path(self, path: str | Path) -> Path:
-        """Ensure that the path is of the `Path` type."""
+        """Ensure that the path is of the `Path` type.
+
+        Args:
+            path: The path to validate.
+
+        Returns:
+            The validated Path value.
+
+        Note:
+            The result will always be a Python `Path` object, regardless of
+            the value given.
+        """
         return Path(path)
 
     def watch_path(self, new_path: str | Path) -> None:

From 8311f837b8af6c35ee7e76739ed149f7b2696d90 Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Wed, 3 May 2023 09:08:21 +0100
Subject: [PATCH 11/18] Add a docstring to render_label

Well, okay, borrow the same from Tree.
---
 src/textual/widgets/_directory_tree.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/textual/widgets/_directory_tree.py b/src/textual/widgets/_directory_tree.py
index a05e5b8a6..a79bbaf3b 100644
--- a/src/textual/widgets/_directory_tree.py
+++ b/src/textual/widgets/_directory_tree.py
@@ -158,6 +158,16 @@ class DirectoryTree(Tree[DirEntry]):
         return first_line
 
     def render_label(self, node: TreeNode[DirEntry], base_style: Style, style: Style):
+        """Render a label for the given node.
+
+        Args:
+            node: A tree node.
+            base_style: The base style of the widget.
+            style: The additional style for the label.
+
+        Returns:
+            A Rich Text object containing the label.
+        """
         node_label = node._label.copy()
         node_label.stylize(style)
 

From f5097671419b4ec107a95ea73fd794965bb12517 Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Wed, 3 May 2023 09:13:11 +0100
Subject: [PATCH 12/18] Don't cast a DirEntry.path to a Path any more

It's always a Path now.
---
 src/textual/widgets/_directory_tree.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/textual/widgets/_directory_tree.py b/src/textual/widgets/_directory_tree.py
index a79bbaf3b..aaa528838 100644
--- a/src/textual/widgets/_directory_tree.py
+++ b/src/textual/widgets/_directory_tree.py
@@ -216,10 +216,9 @@ class DirectoryTree(Tree[DirEntry]):
 
     def _load_directory(self, node: TreeNode[DirEntry]) -> None:
         assert node.data is not None
-        dir_path = Path(node.data.path)
         node.data.loaded = True
         directory = sorted(
-            self.filter_paths(dir_path.iterdir()),
+            self.filter_paths(node.data.path.iterdir()),
             key=lambda path: (not path.is_dir(), path.name.lower()),
         )
         for path in directory:

From 3d6fd7ef4ca098ba2d15d7c56bd343cbed3e2bdc Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Wed, 3 May 2023 09:13:42 +0100
Subject: [PATCH 13/18] Add a docstring to _load_directory

---
 src/textual/widgets/_directory_tree.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/textual/widgets/_directory_tree.py b/src/textual/widgets/_directory_tree.py
index aaa528838..f693d8558 100644
--- a/src/textual/widgets/_directory_tree.py
+++ b/src/textual/widgets/_directory_tree.py
@@ -215,6 +215,11 @@ class DirectoryTree(Tree[DirEntry]):
         return paths
 
     def _load_directory(self, node: TreeNode[DirEntry]) -> None:
+        """Load the directory contents for a given node.
+
+        Args:
+            node: The node to load the directory contents for.
+        """
         assert node.data is not None
         node.data.loaded = True
         directory = sorted(

From 23d6c3611adabdcc10b7d196019f4ad347406722 Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Wed, 3 May 2023 09:34:55 +0100
Subject: [PATCH 14/18] Add DirectoryTree.reload

This is a general reload; reloading the whole tree.
---
 src/textual/widgets/_directory_tree.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/textual/widgets/_directory_tree.py b/src/textual/widgets/_directory_tree.py
index f693d8558..12f30b931 100644
--- a/src/textual/widgets/_directory_tree.py
+++ b/src/textual/widgets/_directory_tree.py
@@ -113,6 +113,11 @@ class DirectoryTree(Tree[DirEntry]):
             disabled=disabled,
         )
 
+    def reload(self) -> None:
+        """Reload the `DirectoryTree` contents."""
+        self.reset(str(self.path), DirEntry(Path(self.path)))
+        self._load_directory(self.root)
+
     def validate_path(self, path: str | Path) -> Path:
         """Ensure that the path is of the `Path` type.
 
@@ -138,8 +143,7 @@ class DirectoryTree(Tree[DirEntry]):
         the new value as the root.
         """
         self.path = Path(new_path)
-        self.reset(str(self.path), DirEntry(self.path))
-        self._load_directory(self.root)
+        self.reload()
 
     def process_label(self, label: TextType) -> Text:
         """Process a str or Text into a label. Maybe overridden in a subclass to modify how labels are rendered.

From c4e2144207bf200389b9ce4967980016596e2edd Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Wed, 3 May 2023 09:59:35 +0100
Subject: [PATCH 15/18] Update the CHANGELOG

---
 CHANGELOG.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3c512aa7c..3eff96dc6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,10 +22,15 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - Setting attributes with a `compute_` method will now raise an `AttributeError` https://github.com/Textualize/textual/issues/2383
 - Unknown psuedo-selectors will now raise a tokenizer error (previously they were silently ignored) https://github.com/Textualize/textual/pull/2445
+- Breaking change: `DirectoryTree.FileSelected.path` is now always a `Path` https://github.com/Textualize/textual/issues/2448
+- Breaking change: `Directorytree.load_directory` renamed to `Directorytree._load_directory` https://github.com/Textualize/textual/issues/2448
 
 ### Added
 
 - Watch methods can now optionally be private https://github.com/Textualize/textual/issues/2382
+- Added `DirectoryTree.path` reactive attribute https://github.com/Textualize/textual/issues/2448
+- Added `DirectoryTree.FileSelected.node`
+- Added `DirectoryTree.reload` https://github.com/Textualize/textual/issues/2448
 
 ## [0.22.3] - 2023-04-29
 

From 4250912a280b723da112e2f233b9daa87955d8d6 Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Wed, 3 May 2023 10:44:45 +0100
Subject: [PATCH 16/18] Don't reassign the path when watching the path

Bit of a thinko happening there.
---
 src/textual/widgets/_directory_tree.py | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/src/textual/widgets/_directory_tree.py b/src/textual/widgets/_directory_tree.py
index 12f30b931..9b3a77f5e 100644
--- a/src/textual/widgets/_directory_tree.py
+++ b/src/textual/widgets/_directory_tree.py
@@ -133,16 +133,12 @@ class DirectoryTree(Tree[DirEntry]):
         """
         return Path(path)
 
-    def watch_path(self, new_path: str | Path) -> None:
+    def watch_path(self) -> None:
         """Watch for changes to the `path` of the directory tree.
 
-        Args:
-            new_path: The new path being set.
-
         If the path is changed the directory tree will be repopulated using
         the new value as the root.
         """
-        self.path = Path(new_path)
         self.reload()
 
     def process_label(self, label: TextType) -> Text:

From 9e15dc45aabf836618a2e24e6654ef18f0cc8b98 Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Wed, 3 May 2023 11:30:44 +0100
Subject: [PATCH 17/18] Link the non-issue-related DirectoryTree change back
 the PR

---
 CHANGELOG.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index de330230a..af9aa228c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -30,7 +30,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - Watch methods can now optionally be private https://github.com/Textualize/textual/issues/2382
 - Added `DirectoryTree.path` reactive attribute https://github.com/Textualize/textual/issues/2448
-- Added `DirectoryTree.FileSelected.node`
+- Added `DirectoryTree.FileSelected.node` https://github.com/Textualize/textual/pull/2463
 - Added `DirectoryTree.reload` https://github.com/Textualize/textual/issues/2448
 - Added textual.on decorator https://github.com/Textualize/textual/issues/2398
 

From 2e89cd11bbab5849e3cfaa1965605afd5cb4598c Mon Sep 17 00:00:00 2001
From: Dave Pearson <davep@davep.org>
Date: Wed, 3 May 2023 11:52:23 +0100
Subject: [PATCH 18/18] Add missing type annotation on render_label

---
 src/textual/widgets/_directory_tree.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/textual/widgets/_directory_tree.py b/src/textual/widgets/_directory_tree.py
index 9b3a77f5e..0090717d7 100644
--- a/src/textual/widgets/_directory_tree.py
+++ b/src/textual/widgets/_directory_tree.py
@@ -157,7 +157,9 @@ class DirectoryTree(Tree[DirEntry]):
         first_line = text_label.split()[0]
         return first_line
 
-    def render_label(self, node: TreeNode[DirEntry], base_style: Style, style: Style):
+    def render_label(
+        self, node: TreeNode[DirEntry], base_style: Style, style: Style
+    ) -> Text:
         """Render a label for the given node.
 
         Args: