simplify

Author: willmcgugan

src/textual/widgets/_input.py

@@ -999,9 +999,7 @@ async def action_submit(self) -> None:
 
     def action_cut(self) -> None:
         """Cut the current selection (copy to clipboard and remove from input)."""
-        start, end = sorted(self.selection)
-        text = self.value[start:end]
-        self.app.copy_to_clipboard(text)
+        self.app.copy_to_clipboard(self.selected_text)
         self.delete_selection()
 
     def action_copy(self) -> None:
@@ -1012,6 +1010,4 @@ def action_paste(self) -> None:
         """Paste from the local clipboard."""
         clipboard = self.app._clipboard
         start, end = sorted(self.selection)
-        new_value = self.value[:start] + clipboard + self.value[end:]
-        self.value = new_value
-        self.cursor_position = start + len(clipboard)
+        self.replace(clipboard, start, end)

tests/text_area/test_textarea_cut_copy_paste.py

@@ -16,7 +16,7 @@ async def test_cut():
         await pilot.press(*"Hello, World")
         await pilot.press("left", "shift+left", "shift+left")
         await pilot.press("ctrl+x")
-        assert text_area.document.text == "Hello, Wod"
+        assert text_area.text == "Hello, Wod"
         assert app.clipboard == "rl"
 
 
@@ -29,7 +29,7 @@ async def test_copy():
         await pilot.press(*"Hello, World")
         await pilot.press("left", "shift+left", "shift+left")
         await pilot.press("ctrl+c")
-        assert text_area.document.text == "Hello, World"
+        assert text_area.text == "Hello, World"
         assert app.clipboard == "rl"
 
 
@@ -44,9 +44,9 @@ async def test_paste():
             "shift+left", "shift+left", "shift+left", "shift+left", "shift+left"
         )
         await pilot.press("ctrl+c")
-        assert text_area.document.text == "Hello, World"
+        assert text_area.text == "Hello, World"
         assert app.clipboard == "World"
         await pilot.press("ctrl+v")
-        assert text_area.document.text == "Hello, World"
+        assert text_area.text == "Hello, World"
         await pilot.press("ctrl+v")
-        assert text_area.document.text == "Hello, WorldWorld"
+        assert text_area.text == "Hello, WorldWorld"