From 63ef97d6ae41f36c6f27a132320d7e546d8d908f Mon Sep 17 00:00:00 2001
From: Will McGugan <willmcgugan@gmail.com>
Date: Sat, 4 Jan 2025 15:15:01 +0000
Subject: [PATCH] allow select

---
 CHANGELOG.md          |  5 +++++
 src/textual/app.py    |  6 ++++++
 src/textual/screen.py | 12 +++++++++++-
 3 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 40a70f0110..44232e150b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,6 +23,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Added `Widget.scrollable_container` property
 - Added `Widget.select_all`
 - Added `Region.bottom_right_inclusive`
+- Added double click to select, triple click to select all in container
+- Added arbitrary text selection
+- Added Widget.ALLOW_SELECT classvar for a per-widget switch to disable text selection
+- Added Widget.allow_select method for programmatic control of text selection
+- Added App.ALLOW_SELECT for a global switch to disable text selection
 
 ### Fixed
 
diff --git a/src/textual/app.py b/src/textual/app.py
index b9b9b01e86..e750dc7389 100644
--- a/src/textual/app.py
+++ b/src/textual/app.py
@@ -396,6 +396,12 @@ class MyApp(App[None]):
     Setting to `None` or `""` disables auto focus.
     """
 
+    ALLOW_SELECT: ClassVar[bool] = True
+    """A switch to toggle arbitrary text selection for the app.
+    
+    Note that this doesn't apply to Input and TextArea which have builtin support for selection.
+    """
+
     _BASE_PATH: str | None = None
     CSS_PATH: ClassVar[CSSPathType | None] = None
     """File paths to load CSS from."""
diff --git a/src/textual/screen.py b/src/textual/screen.py
index eb42a5b95d..c9d90c805e 100644
--- a/src/textual/screen.py
+++ b/src/textual/screen.py
@@ -511,6 +511,11 @@ def is_active(self) -> bool:
         except Exception:
             return False
 
+    @property
+    def allow_select(self) -> bool:
+        """Check if this widget permits text selection."""
+        return self.ALLOW_SELECT
+
     def render(self) -> RenderableType:
         """Render method inherited from widget, used to render the screen's background.
 
@@ -1520,7 +1525,12 @@ def _forward_event(self, event: events.Event) -> None:
                 select_widget, select_offset = self.get_widget_and_offset_at(
                     event.screen_x, event.screen_y
                 )
-                if select_widget is not None and select_widget.allow_select:
+                if (
+                    select_widget is not None
+                    and select_widget.allow_select
+                    and self.screen.allow_select
+                    and self.app.ALLOW_SELECT
+                ):
                     self._selecting = True
                     if select_widget is not None and select_offset is not None:
                         self._select_start = (