From 4eabf257c4e9fb8a874300f8bb9d82a567a7a751 Mon Sep 17 00:00:00 2001
From: friscorose <66039483+friscorose@users.noreply.github.com>
Date: Fri, 28 Feb 2025 21:39:03 -0500
Subject: [PATCH] Update containers.py

Using None as default for min_column_width breaks automatic horizontal flow of children into columns per the API at https://textual.textualize.io/api/containers/#textual.containers.ItemGrid

Setting to the minimum positive integer that maintains documented behavior. Though this may actually be a deeper issue in layout, I leave that decision to someone more knowledgeable. Other positive integers may also be more desirable and it has been suggested to pick a value that is a power of 2.
---
 src/textual/containers.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/textual/containers.py b/src/textual/containers.py
index 4f6cb0bde9..dd50ef6ada 100644
--- a/src/textual/containers.py
+++ b/src/textual/containers.py
@@ -254,7 +254,7 @@ class ItemGrid(Widget, inherit_bindings=False):
     """
 
     stretch_height: reactive[bool] = reactive(True)
-    min_column_width: reactive[int | None] = reactive(None, layout=True)
+    min_column_width: reactive[int | None] = reactive(1, layout=True)
     regular: reactive[bool] = reactive(False)
 
     def __init__(
@@ -264,7 +264,7 @@ def __init__(
         id: str | None = None,
         classes: str | None = None,
         disabled: bool = False,
-        min_column_width: int | None = None,
+        min_column_width: int | None = 1,
         stretch_height: bool = True,
         regular: bool = False,
     ) -> None: