chore(CommandPalette): handle loading state (#221)

docs/content/4.navigation/2.command-palette.md

@@ -160,7 +160,7 @@ function onSelect (option) {
 
 Use any icon from [Iconify](https://icones.js.org) by setting the `icon` prop by using this pattern: `i-{collection_name}-{icon_name}`.
 
-Use the `selectedIcon` prop to set a different icon or change it globally in `ui.commandPalette.default.selectedIcon`. Defaults to `i-heroicons-check-20-solid`.
+Use the `selected-icon` prop to set a different icon or change it globally in `ui.commandPalette.default.selectedIcon`. Defaults to `i-heroicons-check-20-solid`.
 
 ::component-card
 ---
@@ -174,6 +174,24 @@ excludedProps:
 ---
 ::
 
+### Loading
+
+Use the `loading` prop to show a loading icon.
+
+Use the `loading-icon` prop to set a different icon or change it globally in `ui.commandPalette.default.loadingIcon`. Defaults to `i-heroicons-arrow-path-20-solid`.
+
+::component-card
+---
+padding: false
+baseProps:
+  empty: null
+props:
+  loading: true
+excludedProps:
+  - icon
+---
+::
+
 ### Placeholder
 
 Use the `placeholder` prop to change the input placeholder
@@ -218,6 +236,8 @@ Use the `empty` prop to display a message when there are no results.
 
 You can pass an `object` through the `empty` prop or globally through `ui.commandPalette.default.empty`. Here is the default:
 
+You can also set it to `null` to hide the empty label.
+
 ::component-card
 ---
 padding: false
@@ -299,6 +319,10 @@ const groups = computed(() => {
 ```
 ::
 
+::alert{icon="i-heroicons-light-bulb"}
+The `loading` state will automatically be enabled when a `search` function is loading. You can disable this behaviour by setting the `loading-icon` prop to `null` or globally in `ui.commandPalette.default.loadingIcon`.
+::
+
 ## Themes
 
 Our theming system provides a lot of flexibility to customize the component. Here is some examples of what you can do.