Merge pull request #1037 from Textualize/code-browser-improvements

Focus the directory tree in code browser example

examples/code_browser.py

@@ -11,6 +11,8 @@ import sys
 
 from rich.syntax import Syntax
 from rich.traceback import Traceback
+
+from textual import events
 from textual.app import App, ComposeResult
 from textual.containers import Container, Vertical
 from textual.reactive import var
@@ -42,6 +44,9 @@ class CodeBrowser(App):
         )
         yield Footer()
 
+    def on_mount(self, event: events.Mount) -> None:
+        self.query_one(DirectoryTree).focus()
+
     def on_directory_tree_file_click(self, event: DirectoryTree.FileClick) -> None:
         """Called when the user click a file in the directory tree."""
         code_view = self.query_one("#code", Static)