From f1a8c74649f35da1ed99c2df5e33527ff99c1076 Mon Sep 17 00:00:00 2001
From: Will McGugan <willmcgugan@gmail.com>
Date: Tue, 6 Sep 2022 10:23:28 +0100
Subject: [PATCH] remove copose idea

---
 src/textual/_compose.py | 44 -----------------------------------------
 src/textual/app.py      |  6 +-----
 src/textual/widget.py   |  6 +-----
 3 files changed, 2 insertions(+), 54 deletions(-)
 delete mode 100644 src/textual/_compose.py

diff --git a/src/textual/_compose.py b/src/textual/_compose.py
deleted file mode 100644
index 0a2a01754..000000000
--- a/src/textual/_compose.py
+++ /dev/null
@@ -1,44 +0,0 @@
-from __future__ import annotations
-
-from types import GeneratorType
-from typing import TYPE_CHECKING, Iterable
-
-if TYPE_CHECKING:
-    from .app import ComposeResult
-    from .widget import Widget
-
-
-def _compose(compose_result: ComposeResult) -> Iterable[Widget]:
-    """Turns a compose result in to an iterable of Widgets.
-
-    If `compose_result` is a generator, this will run the generator and send
-    back the yielded widgets. This allows you to write code such as this:
-
-    ```python
-    yes = yield Button("Yes")
-    yes.variant = "success"
-    ```
-
-    Otherwise `compose_result` is assumed to already be an iterable of Widgets
-    and will be returned unmodified.
-
-    Args:
-        compose_result (ComposeResult): Either an iterator of widgets,
-            or a generator.
-
-    Returns:
-        Iterable[Widget]: An iterable if widgets.
-
-    """
-
-    if isinstance(compose_result, GeneratorType):
-        try:
-            widget = next(compose_result)
-            send = compose_result.send
-            while True:
-                yield widget
-                widget = send(widget)
-        except StopIteration:
-            pass
-    else:
-        yield from compose_result
diff --git a/src/textual/app.py b/src/textual/app.py
index 62acf53b5..5fb4c814b 100644
--- a/src/textual/app.py
+++ b/src/textual/app.py
@@ -15,7 +15,6 @@ from typing import Any, Generator, Generic, Iterable, Iterator, Type, TypeVar, c
 from weakref import WeakSet, WeakValueDictionary
 
 from ._ansi_sequences import SYNC_END, SYNC_START
-from ._compose import _compose
 from ._path import _make_path_object_relative
 
 if sys.version_info >= (3, 8):
@@ -386,9 +385,6 @@ class App(Generic[ReturnType], DOMNode):
         return
         yield
 
-    def _compose(self) -> Iterable[Widget]:
-        return _compose(self.compose())
-
     def get_css_variables(self) -> dict[str, str]:
         """Get a mapping of variables used to pre-populate CSS.
 
@@ -1149,7 +1145,7 @@ class App(Generic[ReturnType], DOMNode):
         self.set_timer(screenshot_timer, on_screenshot, name="screenshot timer")
 
     def _on_mount(self) -> None:
-        widgets = self._compose()
+        widgets = self.compose()
         if widgets:
             self.mount_all(widgets)
 
diff --git a/src/textual/widget.py b/src/textual/widget.py
index 63a332447..a97f8b129 100644
--- a/src/textual/widget.py
+++ b/src/textual/widget.py
@@ -18,7 +18,6 @@ from rich.text import Text
 from . import errors, events, messages
 from ._animator import BoundAnimator
 from ._arrange import DockArrangeResult, arrange
-from ._compose import _compose
 from ._context import active_app
 from ._layout import Layout
 from ._segment_tools import align_lines
@@ -268,9 +267,6 @@ class Widget(DOMNode):
         return
         yield
 
-    def _compose(self) -> Iterable[Widget]:
-        return _compose(self.compose())
-
     def _post_register(self, app: App) -> None:
         """Called when the instance is registered.
 
@@ -1456,7 +1452,7 @@ class Widget(DOMNode):
         await self.dispatch_key(event)
 
     def _on_mount(self, event: events.Mount) -> None:
-        widgets = self._compose()
+        widgets = self.compose()
         self.mount(*widgets)
         self.screen.refresh(repaint=False, layout=True)