update suggestion method

CHANGELOG.md

@@ -26,6 +26,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Added `DOMNode.displayed_children` https://github.com/Textualize/textual/pull/6070
 - Added `TextArea.UserInsert` message https://github.com/Textualize/textual/pull/6070
 - Added `TextArea.hide_suggestion_on_blur` boolean https://github.com/Textualize/textual/pull/6070
+- Added `OptionList.highlighted_option` property https://github.com/Textualize/textual/pull/6090
+- Added `TextArea.update_suggestion` method https://github.com/Textualize/textual/pull/6090
 
 ### Changed
 

src/textual/widgets/_footer.py

@@ -256,6 +256,8 @@ def compose(self) -> ComposeResult:
                         self.app.get_key_display(binding),
                         "",
                         binding.action,
+                        disabled=not enabled,
+                        tooltip=tooltip or binding.description,
                         classes="-grouped",
                     ).data_bind(Footer.compact)
                 yield FooterLabel(group.description)

src/textual/widgets/_option_list.py

@@ -311,6 +311,18 @@ def option_count(self) -> int:
         """The number of options."""
         return len(self._options)
 
+    @property
+    def highlighted_option(self) -> Option | None:
+        """The currently highlighted options, or `None` if no option is highlighted,
+
+        Returns:
+            An Option, or `None`.
+        """
+        if self.highlighted is not None:
+            return self.options[self.highlighted]
+        else:
+            return None
+
     def clear_options(self) -> Self:
         """Clear the content of the option list.
 

src/textual/widgets/_text_area.py

@@ -663,9 +663,7 @@ def notify_style_update(self) -> None:
         super().notify_style_update()
 
     def update_suggestion(self) -> None:
-        """A hook called after edits, to allow subclasses to update the
-        [`suggestion`][textual.widgets.TextArea.suggestion] attribute.
-        """
+        """A hook to update the [`suggestion`][textual.widgets.TextArea.suggestion] attribute."""
 
     def check_consume_key(self, key: str, character: str | None = None) -> bool:
         """Check if the widget may consume the given key.
@@ -1079,6 +1077,7 @@ def load_text(self, text: str) -> None:
         self.history.clear()
         self._set_document(text, self.language)
         self.post_message(self.Changed(self).set_sender(self))
+        self.update_suggestion()
 
     def _on_resize(self) -> None:
         self._rewrap_and_refresh_virtual_size()
@@ -1625,6 +1624,7 @@ def _undo_batch(self, edits: Sequence[Edit]) -> None:
             edit.after(self)
         self._build_highlight_map()
         self.post_message(self.Changed(self))
+        self.update_suggestion()
 
     def _redo_batch(self, edits: Sequence[Edit]) -> None:
         """Redo a batch of Edits in order.
@@ -1673,6 +1673,7 @@ def _redo_batch(self, edits: Sequence[Edit]) -> None:
             edit.after(self)
         self._build_highlight_map()
         self.post_message(self.Changed(self))
+        self.update_suggestion()
 
     async def _on_key(self, event: events.Key) -> None:
         """Handle key presses which correspond to document inserts."""