Make filter module public

src/textual/_styles_cache.py

@@ -8,7 +8,7 @@ from rich.segment import Segment
 from rich.style import Style
 
 from ._border import get_box, render_row
-from ._filter import LineFilter
+from .filter import LineFilter
 from ._opacity import _apply_opacity
 from ._segment_tools import line_pad, line_trim
 from .color import Color

src/textual/app.py

@@ -48,7 +48,7 @@ from ._asyncio import create_task
 from ._callback import invoke
 from ._context import active_app
 from ._event_broker import NoHandler, extract_handler_actions
-from ._filter import LineFilter, Monochrome
+from .filter import LineFilter, Monochrome
 from ._path import _make_path_object_relative
 
 from ._wait import wait_for_idle

src/textual/strip.py

@@ -9,7 +9,7 @@ from rich.segment import Segment
 from rich.style import Style, StyleType
 
 from ._cache import FIFOCache
-from ._filter import LineFilter
+from .filter import LineFilter
 from ._segment_tools import index_to_cell_position
 
 

tests/test_strip.py

@@ -4,7 +4,7 @@ from rich.style import Style
 
 from textual._segment_tools import NoCellPositionForIndex
 from textual.strip import Strip
-from textual._filter import Monochrome
+from textual.filter import Monochrome
 
 
 def test_cell_length() -> None: