feat(VDataTable): Feat/emit sorted and filtered items v data table

packages/api-generator/src/locale/en/VDataTable.json

@@ -74,6 +74,7 @@
     "pagination": "Emits when something changed to the `pagination` which can be provided via the `pagination` prop.",
     "toggleSelectAll": "Emits when the `select-all` checkbox in table header is clicked. This checkbox is enabled by the **show-select** prop.",
     "update:expanded": "Emits when the **expanded** property of the **options** prop is updated.",
+    "update:filteredItems": "Emits i.e. when **searching** and return the filtered items.",
     "update:groupBy": "Emits when the **group-by** property of the **options** property is updated.",
     "update:groupDesc": "Emits when the **group-desc** property of the **options** prop is updated.",
     "update:itemsPerPage": "Emits when the **items-per-page** property of the **options** prop is updated.",
@@ -83,6 +84,7 @@
     "update:options": "Emits when one of the **options** properties is updated.",
     "update:page": "Emits when the **page** property of the **options** prop is updated.",
     "update:sortBy": "Emits when the **sortBy** property of the **options** prop is updated.",
-    "update:sortDesc": "Emits when the **sort-desc** property of the **options** prop is updated."
+    "update:sortDesc": "Emits when the **sort-desc** property of the **options** prop is updated.",
+    "update:sortedItems": "Emits when **sorting** and return items according to its current sorting."
   }
 }

packages/vuetify/src/components/VDataTable/VDataTable.tsx

@@ -124,6 +124,8 @@ export const VDataTable = genericComponent<new <T extends readonly any[], V>(
     'update:groupBy': (value: any) => true,
     'update:expanded': (value: any) => true,
     'update:currentItems': (value: any) => true,
+    'update:sortedItems': (value: any) => true,
+    'update:filteredItems': (value: any) => true,
   },
 
   setup (props, { attrs, slots }) {

packages/vuetify/src/components/VDataTable/composables/sort.ts

@@ -3,8 +3,8 @@ import { useLocale } from '@/composables'
 import { useProxiedModel } from '@/composables/proxiedModel'
 
 // Utilities
-import { computed, inject, provide, toRef } from 'vue'
-import { isEmpty, propsFactory } from '@/util'
+import { computed, inject, provide, toRef, watch } from 'vue'
+import { getCurrentInstance, isEmpty, propsFactory } from '@/util'
 
 // Types
 import type { InjectionKey, PropType, Ref } from 'vue'
@@ -108,6 +108,7 @@ export function useSortedItems<T extends InternalItem> (
     sortRawFunctions?: Ref<Record<string, DataTableCompareFunction> | undefined>
   },
 ) {
+  const vm = getCurrentInstance('userSortedItems')
   const locale = useLocale()
   const sortedItems = computed(() => {
     if (!sortBy.value.length || props.disableSort) return items.value
@@ -122,6 +123,10 @@ export function useSortedItems<T extends InternalItem> (
     })
   })
 
+  watch(sortedItems, val => {
+    vm.emit('update:sortedItems', val)
+  })
+
   return { sortedItems }
 }
 

packages/vuetify/src/composables/__tests__/filter.spec.ts

@@ -5,6 +5,7 @@ import { transformItem, transformItems } from '../list-items'
 // Utilities
 import { describe, expect, it } from '@jest/globals'
 import { nextTick, ref } from 'vue'
+import { withSetup } from '../../util/withSetup'
 import { deepEqual } from '@/util'
 
 const itemProps = {
@@ -186,9 +187,8 @@ describe('filter', () => {
       ['14', 1],
       ['foo', 0],
     ])('should return an array of filtered items from value %s', (text: any, expected: number) => {
-      const { filteredItems } = useFilter({}, ref(transformItems(itemProps, items)), ref(text))
-
-      expect(filteredItems.value).toHaveLength(expected)
+      const [result] = withSetup(() => useFilter({}, ref(transformItems(itemProps, items)), ref(text)))
+      expect((result as any)?.filteredItems?.value).toHaveLength(expected)
     })
 
     it('should accept a custom filter function', async () => {
@@ -204,19 +204,22 @@ describe('filter', () => {
         { title: 'fizz' },
         { title: 'buzz' },
       ]))
-      const { filteredItems } = useFilter(props, items, query)
 
-      expect(filteredItems.value.map(item => item.raw.title)).toEqual(['fizz', 'buzz'])
+      const [result] = withSetup(() => useFilter(props, items, query))
+
+      const filteredItems = (result as any)?.filteredItems
+
+      expect(filteredItems.value.map((item: any) => item.raw.title)).toEqual(['fizz', 'buzz'])
 
       query.value = 'foo'
       await nextTick()
 
-      expect(filteredItems.value.map(item => item.raw.title)).toEqual(['foo'])
+      expect(filteredItems.value.map((item: any) => item.raw.title)).toEqual(['foo'])
 
       items.value.push(transformItem(itemProps, { title: 'foobar' }))
       await nextTick()
 
-      expect(filteredItems.value.map(item => item.raw.title)).toEqual(['foo', 'foobar'])
+      expect(filteredItems.value.map((item: any) => item.raw.title)).toEqual(['foo', 'foobar'])
     })
   })
 })

packages/vuetify/src/composables/filter.ts

@@ -3,7 +3,7 @@
 
 // Utilities
 import { computed, ref, unref, watchEffect } from 'vue'
-import { getPropertyFromItem, propsFactory, wrapInArray } from '@/util'
+import { getCurrentInstance, getPropertyFromItem, propsFactory, wrapInArray } from '@/util'
 
 // Types
 import type { PropType, Ref } from 'vue'
@@ -139,6 +139,7 @@ export function useFilter <T extends InternalItem> (
     customKeyFilter?: MaybeRef<FilterKeyFunctions | undefined>
   }
 ) {
+  const vm = getCurrentInstance('useFilter')
   const filteredItems: Ref<T[]> = ref([])
   const filteredMatches: Ref<Map<unknown, Record<string, FilterMatch>>> = ref(new Map())
   const transformedItems = computed(() => (
@@ -180,6 +181,8 @@ export function useFilter <T extends InternalItem> (
     })
     filteredItems.value = _filteredItems
     filteredMatches.value = _filteredMatches
+
+    vm.emit('update:filteredItems', filteredItems.value)
   })
 
   function getMatches (item: T) {

packages/vuetify/src/util/withSetup.ts

@@ -0,0 +1,18 @@
+/* From vuejs.org docs: https://vuejs.org/guide/scaling-up/testing.html#testing-composables */
+// Utilities
+import { createApp } from 'vue'
+
+export function withSetup (composable: any) {
+  let result
+  const app = createApp({
+    setup () {
+      result = composable()
+      // suppress missing template warning
+      return () => { }
+    },
+  })
+  app.mount(document.createElement('div'))
+  // return the result and the app instance
+  // for testing provide/unmount
+  return [result, app]
+}