Merge pull request #5361 from Textualize/command-palette-highlight

highlight top item

CHANGELOG.md

@@ -17,6 +17,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - Change default quit key to `ctrl+q` https://github.com/Textualize/textual/pull/5352
 - Changed delete line binding on TextArea to use `ctrl+shift+x` https://github.com/Textualize/textual/pull/5352
+- The command palette will now select the top item automatically https://github.com/Textualize/textual/pull/5361
 
 ### Fixed
 

src/textual/command.py

@@ -20,6 +20,7 @@
 from dataclasses import dataclass
 from functools import total_ordering
 from inspect import isclass
+from operator import attrgetter
 from time import monotonic
 from typing import (
     TYPE_CHECKING,
@@ -455,9 +456,9 @@ class CommandList(OptionList, can_focus=False):
     }
 
     CommandList > .option-list--option-highlighted {
-        color: $block-cursor-foreground;
-        background: $block-cursor-background;
-        text-style: $block-cursor-text-style;
+        color: $block-cursor-blurred-foreground;
+        background: $block-cursor-blurred-background;
+        text-style: $block-cursor-blurred-text-style;
     }
 
     CommandList:nocolor > .option-list--option-highlighted {       
@@ -1014,26 +1015,12 @@ def _refresh_command_list(
             commands: The commands to show in the widget.
             clear_current: Should the current content of the list be cleared first?
         """
-        # For the moment, this is a fairly naive approach to populating the
-        # command list with a list of commands. Every time we add a
-        # new one we're nuking the list of options and populating them
-        # again. If this turns out to not be a great approach, we may try
-        # and get a lot smarter with this (ideally OptionList will grow a
-        # method to sort its content in an efficient way; but for now we'll
-        # go with "worse is better" wisdom).
-        highlighted = (
-            command_list.get_option_at_index(command_list.highlighted)
-            if command_list.highlighted is not None and not clear_current
-            else None
-        )
-
-        def sort_key(command: Command) -> float:
-            return -command.hit.score
 
-        sorted_commands = sorted(commands, key=sort_key)
+        sorted_commands = sorted(commands, key=attrgetter("hit.score"), reverse=True)
         command_list.clear_options().add_options(sorted_commands)
-        if highlighted is not None and highlighted.id:
-            command_list.highlighted = command_list.get_option_index(highlighted.id)
+
+        if sorted_commands:
+            command_list.highlighted = 0
 
         self._list_visible = bool(command_list.option_count)
         self._hit_count = command_list.option_count

tests/command_palette/test_interaction.py

@@ -19,13 +19,13 @@ def on_mount(self) -> None:
 
 
 async def test_initial_list_no_highlight() -> None:
-    """When the list initially appears, nothing will be highlighted."""
+    """When the list initially appears, the first item is highlghted."""
     async with CommandPaletteApp().run_test() as pilot:
         assert CommandPalette.is_open(pilot.app)
         assert pilot.app.screen.query_one(CommandList).visible is False
         await pilot.press("a")
         assert pilot.app.screen.query_one(CommandList).visible is True
-        assert pilot.app.screen.query_one(CommandList).highlighted is None
+        assert pilot.app.screen.query_one(CommandList).highlighted == 0
 
 
 async def test_down_arrow_selects_an_item() -> None:
@@ -35,32 +35,19 @@ async def test_down_arrow_selects_an_item() -> None:
         assert pilot.app.screen.query_one(CommandList).visible is False
         await pilot.press("a")
         assert pilot.app.screen.query_one(CommandList).visible is True
-        assert pilot.app.screen.query_one(CommandList).highlighted is None
+        assert pilot.app.screen.query_one(CommandList).highlighted == 0
         await pilot.press("down")
-        assert pilot.app.screen.query_one(CommandList).highlighted is not None
+        assert pilot.app.screen.query_one(CommandList).highlighted == 1
 
 
 async def test_enter_selects_an_item() -> None:
-    """Typing in a search value then pressing enter should select a command."""
+    """Typing in a search value then pressing enter should dismiss the command palette."""
     async with CommandPaletteApp().run_test() as pilot:
         assert CommandPalette.is_open(pilot.app)
         assert pilot.app.screen.query_one(CommandList).visible is False
         await pilot.press("a")
         assert pilot.app.screen.query_one(CommandList).visible is True
-        assert pilot.app.screen.query_one(CommandList).highlighted is None
-        await pilot.press("enter")
-        assert pilot.app.screen.query_one(CommandList).highlighted is not None
-
-
-async def test_selection_of_command_closes_command_palette() -> None:
-    """Selecting a command from the list should close the list."""
-    async with CommandPaletteApp().run_test() as pilot:
-        assert CommandPalette.is_open(pilot.app)
-        assert pilot.app.screen.query_one(CommandList).visible is False
-        await pilot.press("a")
-        assert pilot.app.screen.query_one(CommandList).visible is True
-        assert pilot.app.screen.query_one(CommandList).highlighted is None
-        await pilot.press("enter")
-        assert pilot.app.screen.query_one(CommandList).highlighted is not None
+        assert pilot.app.screen.query_one(CommandList).highlighted == 0
         await pilot.press("enter")
         assert not CommandPalette.is_open(pilot.app)
+        assert not pilot.app.screen.query(CommandList)