Gc tweak

CHANGELOG.md

@@ -5,6 +5,16 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [8.0.1] - 2026-03-01
+
+### Fixed
+
+- `DirectoryTree` runs more operations in a thread to avoid micro-freezes
+
+### Changes
+
+- Some tweaks to garbage collection to reduce gc time
+
 ## [8.0.0] - 2026-02-16
 
 ### Added
@@ -3350,6 +3360,7 @@ https://textual.textualize.io/blog/2022/11/08/version-040/#version-040
 - New handler system for messages that doesn't require inheritance
 - Improved traceback handling
 
+[8.0.1]: https://github.com/Textualize/textual/compare/v8.0.0...v8.0.1
 [8.0.0]: https://github.com/Textualize/textual/compare/v7.5.0...v8.0.0
 [7.5.0]: https://github.com/Textualize/textual/compare/v7.4.0...v7.5.0
 [7.4.0]: https://github.com/Textualize/textual/compare/v7.3.0...v7.4.0

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "textual"
-version = "8.0.0"
+version = "8.0.1"
 homepage = "https://github.com/Textualize/textual"
 repository = "https://github.com/Textualize/textual"
 documentation = "https://textual.textualize.io/"

src/textual/css/styles.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import weakref
 from dataclasses import dataclass, field
 from functools import partial
 from operator import attrgetter
@@ -256,8 +257,6 @@ class StylesBase:
         "line_pad",
     }
 
-    node: DOMNode | None = None
-
     display = StringEnumProperty(VALID_DISPLAY, "block", layout=True, display=True)
     """Set the display of the widget, defining how it's rendered.
 
@@ -519,6 +518,11 @@ class StylesBase:
     Requires terminal support for Kitty pointer shapes protocol.
     """
 
+    @property
+    def node(self) -> DOMNode | None:
+        """The DOM node the styles will be applied to, or `None` if it is not set."""
+        return None
+
     def __textual_animation__(
         self,
         attribute: str,
@@ -1331,14 +1335,22 @@ class RenderStyles(StylesBase):
     """Presents a combined view of two Styles object: a base Styles and inline Styles."""
 
     def __init__(self, node: DOMNode, base: Styles, inline_styles: Styles) -> None:
-        self.node = node
+        self._node = weakref.ref(node)
         self._base_styles = base
         self._inline_styles = inline_styles
         self._animate: BoundAnimator | None = None
         self._updates: int = 0
         self._rich_style: tuple[int, Style] | None = None
         self._gutter: tuple[int, Spacing] | None = None
 
+    def _update_node(self, node: DOMNode) -> None:
+        """Update the associated DOM node.
+
+        Args:
+            node: New node for the styles.
+        """
+        self._node = weakref.ref(node)
+
     def __eq__(self, other: object) -> bool:
         if isinstance(other, RenderStyles):
             return (
@@ -1356,6 +1368,11 @@ def _cache_key(self) -> int:
         """
         return self._updates + self._base_styles._updates + self._inline_styles._updates
 
+    @property
+    def node(self) -> DOMNode | None:
+        """The DOM node the styles will be applied to, or `None` if it is not set."""
+        return self._node()
+
     @property
     def base(self) -> Styles:
         """Quick access to base (css) style."""

src/textual/dom.py

@@ -615,7 +615,8 @@ def get_component_styles(self, *names: str) -> RenderStyles:
             if name not in self._component_styles:
                 raise KeyError(f"No {name!r} key in COMPONENT_CLASSES")
             component_styles = self._component_styles[name]
-            styles.node = component_styles.node
+            assert component_styles.node is not None
+            styles._update_node(component_styles.node)
             styles.base.merge(component_styles.base)
             styles.inline.merge(component_styles.inline)
             styles._updates += 1

src/textual/widgets/_markdown.py

@@ -2,6 +2,7 @@
 
 import asyncio
 import re
+import weakref
 from contextlib import suppress
 from functools import partial
 from pathlib import Path, PurePath
@@ -210,7 +211,7 @@ def __init__(
         *args,
         **kwargs,
     ) -> None:
-        self._markdown: Markdown = markdown
+        self._markdown_ref = weakref.ref(markdown)
         """A reference to the Markdown document that contains this block."""
         self._content: Content = Content()
         self._token: Token = token
@@ -224,6 +225,13 @@ def __init__(
             *args, name=token.type, classes=f"level-{token.level}", **kwargs
         )
 
+    @property
+    def _markdown(self) -> Markdown:
+        """Resolve the weak ref to _markdown"""
+        markdown = self._markdown_ref()
+        assert markdown is not None
+        return markdown
+
     @property
     def select_container(self) -> Widget:
         return self.query_ancestor(Markdown)

tests/css/test_styles.py

@@ -90,7 +90,7 @@ def test_merge_rules():
 def test_render_styles_border():
     base = Styles()
     inline = Styles()
-    styles_view = RenderStyles(None, base, inline)
+    styles_view = RenderStyles(DOMNode(), base, inline)
 
     base.border_top = ("heavy", "red")
     # Base has border-top: heavy red