From 70d4ebc316d4df4371d0a2b0817cce3579626af3 Mon Sep 17 00:00:00 2001
From: Will McGugan <willmcgugan@gmail.com>
Date: Fri, 16 Dec 2022 20:19:01 +0000
Subject: [PATCH] Added message to exit method

---
 src/textual/_compositor.py   | 2 +-
 src/textual/app.py           | 7 ++++++-
 src/textual/widgets/_tree.py | 3 ++-
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/textual/_compositor.py b/src/textual/_compositor.py
index 75c7b973f..ec350ebfe 100644
--- a/src/textual/_compositor.py
+++ b/src/textual/_compositor.py
@@ -449,7 +449,7 @@ class Compositor:
                     map[widget] = MapGeometry(
                         region + layout_offset,
                         order,
-                        clip,
+                        clip if widget.is_container else sub_clip,
                         total_region.size,
                         container_size,
                         virtual_region,
diff --git a/src/textual/app.py b/src/textual/app.py
index 3a99ee9fa..4e0c24457 100644
--- a/src/textual/app.py
+++ b/src/textual/app.py
@@ -414,14 +414,19 @@ class App(Generic[ReturnType], DOMNode):
         """list[Screen]: A *copy* of the screen stack."""
         return self._screen_stack.copy()
 
-    def exit(self, result: ReturnType | None = None) -> None:
+    def exit(
+        self, result: ReturnType | None = None, message: RenderableType | None = None
+    ) -> None:
         """Exit the app, and return the supplied result.
 
         Args:
             result (ReturnType | None, optional): Return value. Defaults to None.
+            message (RenderableType | None): Optional message to display on exit.
         """
         self._return_value = result
         self.post_message_no_wait(messages.ExitApp(sender=self))
+        if message:
+            self._exit_renderables.append(message)
 
     @property
     def focused(self) -> Widget | None:
diff --git a/src/textual/widgets/_tree.py b/src/textual/widgets/_tree.py
index 7619112d8..de61976be 100644
--- a/src/textual/widgets/_tree.py
+++ b/src/textual/widgets/_tree.py
@@ -451,6 +451,7 @@ class Tree(Generic[TreeDataType], ScrollView, can_focus=True):
 
     def clear(self) -> None:
         """Clear all nodes under root."""
+        self._line_cache.clear()
         self._tree_lines_cached = None
         self._current_id = 0
         root_label = self.root._label
@@ -810,7 +811,7 @@ class Tree(Generic[TreeDataType], ScrollView, can_focus=True):
             cursor_line = meta["line"]
             if meta.get("toggle", False):
                 node = self.get_node_at_line(cursor_line)
-                if node is not None and self.auto_expand:
+                if node is not None:
                     self._toggle_node(node)
 
             else: