feat(CommandPalette): handle async search for specific groups

docs/pages/examples.vue

@@ -149,18 +149,13 @@
 
       <UCard body-class="">
         <UCommandPalette
-          v-model="form.persons"
-          multiple
           :placeholder="false"
           :options="{
             fuseOptions: {
               includeMatches: true
             }
           }"
-          :groups="[{
-            key: 'persons',
-            commands: people
-          }]"
+          :groups="commandPaletteGroups"
           command-attribute="name"
         />
       </UCard>
@@ -263,6 +258,18 @@ const y = ref(0)
 const isContextMenuOpen = ref(false)
 const contextMenuRef = ref(null)
 
+const commandPaletteGroups = computed(() => ([{
+  key: 'people',
+  commands: people.value
+}, {
+  key: 'search',
+  label: q => q && `Search results for "${q}"...`,
+  search: async (q) => {
+    if (!q) { return [] }
+    return await $fetch(`https://jsonplaceholder.typicode.com/users?q=${q}`)
+  }
+}]))
+
 onMounted(() => {
   document.addEventListener('mousemove', ({ clientX, clientY }) => {
     x.value = clientX

src/runtime/components/navigation/CommandPalette.vue

@@ -38,7 +38,14 @@
         aria-label="Commands"
         class="relative flex-1 overflow-y-auto divide-y divide-gray-100 dark:divide-gray-800 scroll-py-2"
       >
-        <CommandPaletteGroup v-for="group of groups" :key="group.key" :group="group" :group-attribute="groupAttribute" :command-attribute="commandAttribute">
+        <CommandPaletteGroup
+          v-for="group of groups"
+          :key="group.key"
+          :query="query"
+          :group="group"
+          :group-attribute="groupAttribute"
+          :command-attribute="commandAttribute"
+        >
           <template v-for="(_, name) in $slots" #[name]="slotData">
             <slot :name="name" v-bind="slotData" />
           </template>
@@ -59,6 +66,7 @@
 import { ref, computed, watch, onMounted } from 'vue'
 import { Combobox, ComboboxInput, ComboboxOptions } from '@headlessui/vue'
 import type { ComputedRef, PropType, ComponentPublicInstance } from 'vue'
+import { useDebounceFn } from '@vueuse/core'
 import { useFuse } from '@vueuse/integrations/useFuse'
 import { groupBy, map } from 'lodash-es'
 import { defu } from 'defu'
@@ -133,6 +141,10 @@ const props = defineProps({
   placeholder: {
     type: Boolean,
     default: true
+  },
+  debounce: {
+    type: Number,
+    default: 0
   }
 })
 
@@ -168,29 +180,44 @@ const options: ComputedRef<Partial<UseFuseOptions<Command>>> = computed(() => de
   matchAllWhenSearchEmpty: true
 }))
 
-const commands = computed(() => props.groups.reduce((acc, group) => {
+const commands = computed(() => props.groups.filter(group => !group.search).reduce((acc, group) => {
   return acc.concat(group.commands.map(command => ({ ...command, group: group.key })))
 }, [] as Command[]))
 
+const searchResults = ref({})
+
 const { results } = useFuse(query, commands, options)
 
-const groups = computed(() => map(groupBy(results.value, command => command.item.group), (results, key) => {
-  const commands = results.map((result) => {
-    const { item, ...data } = result
+const groups = computed(() => ([
+  ...map(groupBy(results.value, command => command.item.group), (results, key) => {
+    const commands = results.map((result) => {
+      const { item, ...data } = result
+
+      return {
+        ...item,
+        ...data
+      }
+    })
 
     return {
-      ...item,
-      ...data
-    }
-  })
+      ...props.groups.find(group => group.key === key),
+      commands: commands.slice(0, options.value.resultLimit)
+    } as Group
+  }),
+  ...props.groups.filter(group => !!group.search).map(group => ({ ...group, commands: (searchResults.value[group.key] || []).slice(0, options.value.resultLimit) })).filter(group => group.commands.length)
+]))
 
-  return {
-    ...props.groups.find(group => group.key === key),
-    commands: commands.slice(0, options.value.resultLimit)
-  } as Group
-}))
+const debouncedSearch = useDebounceFn(async () => {
+  const searchableGroups = props.groups.filter(group => !!group.search)
+
+  await Promise.all(searchableGroups.map(async (group) => {
+    searchResults.value[group.key] = await group.search(query.value)
+  }))
+}, props.debounce)
 
 watch(query, () => {
+  debouncedSearch()
+
   // Select first item on search changes
   setTimeout(() => {
     // https://github.com/tailwindlabs/headlessui/blob/6fa6074cd5d3a96f78a2d965392aa44101f5eede/packages/%40headlessui-vue/src/components/combobox/combobox.ts#L804

src/runtime/components/navigation/CommandPaletteGroup.vue

@@ -1,7 +1,7 @@
 <template>
   <div class="p-2" role="option">
-    <h2 v-if="group[groupAttribute]" class="px-3 my-2 text-xs font-semibold u-text-gray-900">
-      {{ group[groupAttribute] }}
+    <h2 v-if="label" class="px-3 my-2 text-xs font-semibold u-text-gray-900">
+      {{ label }}
     </h2>
 
     <div class="text-sm u-text-gray-700" role="listbox" :aria-label="group[groupAttribute]">
@@ -52,18 +52,23 @@
 </template>
 
 <script setup lang="ts">
+import { computed } from 'vue'
 import { ComboboxOption } from '@headlessui/vue'
 import type { PropType } from 'vue'
 import Icon from '../elements/Icon.vue'
 import Avatar from '../elements/Avatar.vue'
 import type { Group } from '../../types/command-palette'
 import $ui from '#build/ui'
 
-defineProps({
+const props = defineProps({
   group: {
     type: Object as PropType<Group>,
     required: true
   },
+  query: {
+    type: String,
+    default: ''
+  },
   groupAttribute: {
     type: String,
     required: true
@@ -74,6 +79,12 @@ defineProps({
   }
 })
 
+const label = computed(() => {
+  const label = props.group[props.groupAttribute]
+
+  return typeof label === 'function' ? label(props.query) : label
+})
+
 function highlight ({ indices, value }: { indices: number[][], value:string }, i = 1): string {
   const pair = indices[indices.length - i]
   if (!pair) {