From e8bbdf974b044698a6a0f5ed8c76690a2e5cf205 Mon Sep 17 00:00:00 2001
From: Jeremy <15975785+jw-foss@users.noreply.github.com>
Date: Tue, 31 Jan 2023 11:58:52 +0800
Subject: [PATCH] feat: integrate use popper (#11045)

* feat: integrate use popper

* Integrate popper with use popper hook.
* Reorganize code for better readabilities.

* fix: contentStyle typing

* fix: test failure

* fix: slider placement testing

* refactor: slider test case refactoring

* fix: virtual triggering

---------

Co-authored-by: JeremyWuuuuu <15975785+JeremyWuuuuu@users.noreply.github.com>
---
 .../popper/__tests__/content.test.tsx         |  46 ++++-
 packages/components/popper/src/arrow.vue      |   9 +-
 .../popper/src/composables/index.ts           |   3 +
 .../popper/src/composables/use-content-dom.ts |  59 ++++++
 .../popper/src/composables/use-content.ts     |  89 +++++++++
 .../popper/src/composables/use-focus-trap.ts  |  61 ++++++
 packages/components/popper/src/content.vue    | 173 ++++--------------
 packages/components/popper/src/utils.ts       |  21 +--
 .../slider/__tests__/slider.test.tsx          |   3 +-
 packages/hooks/use-popper/index.ts            |   6 +-
 packages/tokens/popper.ts                     |   3 +-
 11 files changed, 308 insertions(+), 165 deletions(-)
 create mode 100644 packages/components/popper/src/composables/index.ts
 create mode 100644 packages/components/popper/src/composables/use-content-dom.ts
 create mode 100644 packages/components/popper/src/composables/use-content.ts
 create mode 100644 packages/components/popper/src/composables/use-focus-trap.ts

diff --git a/packages/components/popper/__tests__/content.test.tsx b/packages/components/popper/__tests__/content.test.tsx
index b4830af8a9..d46cc9fab8 100644
--- a/packages/components/popper/__tests__/content.test.tsx
+++ b/packages/components/popper/__tests__/content.test.tsx
@@ -1,4 +1,4 @@
-import { nextTick, ref } from 'vue'
+import { defineComponent, nextTick, ref } from 'vue'
 import { mount } from '@vue/test-utils'
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { POPPER_INJECTION_KEY } from '@element-plus/tokens'
@@ -14,6 +14,21 @@ const popperInjection = {
   contentRef: ref(),
 }
 
+const TestComponent = defineComponent({
+  setup() {
+    return {
+      contentRef: ref(),
+    }
+  },
+  render() {
+    return (
+      <ElContent ref="contentRef" {...this.$attrs}>
+        {AXIOM}
+      </ElContent>
+    )
+  },
+})
+
 const mountContent = (props = {}) =>
   mount(<ElContent {...props}>{AXIOM}</ElContent>, {
     global: {
@@ -23,6 +38,15 @@ const mountContent = (props = {}) =>
     },
   })
 
+const mountWrappedContent = (props = {}) =>
+  mount(<TestComponent {...props} />, {
+    global: {
+      provide: {
+        [POPPER_INJECTION_KEY as symbol]: popperInjection,
+      },
+    },
+  })
+
 describe('<ElPopperContent />', () => {
   describe('with triggerRef provided', () => {
     const triggerKls = 'el-popper__trigger'
@@ -48,8 +72,16 @@ describe('<ElPopperContent />', () => {
       expect(wrapper.html()).toContain(AXIOM)
       expect(popperInjection.popperInstanceRef.value).toBeDefined()
       expect(wrapper.classes()).toEqual(['el-popper', 'is-dark'])
+      expect(wrapper.vm.contentStyle).toHaveLength(3)
       expect(wrapper.vm.contentStyle[0]).toHaveProperty('zIndex')
-      expect(wrapper.vm.contentStyle[1]).toBeUndefined()
+      expect(wrapper.vm.contentStyle[1]).toEqual({})
+      expect(wrapper.vm.contentStyle[2]).toEqual(
+        expect.objectContaining({
+          position: 'absolute',
+          top: '0',
+          left: '0',
+        })
+      )
     })
 
     it('should be able to be pure and themed', async () => {
@@ -94,7 +126,6 @@ describe('<ElPopperContent />', () => {
 
     describe('instantiate popper instance', () => {
       it('should be able to update the current instance', async () => {
-        wrapper = mountContent()
         await nextTick()
 
         vi.spyOn(
@@ -113,10 +144,11 @@ describe('<ElPopperContent />', () => {
       })
 
       it('should be able to update the reference node', async () => {
-        wrapper = mountContent()
+        const w = mountWrappedContent()
         await nextTick()
 
-        const oldInstance = wrapper.vm.popperInstanceRef
+        const { contentRef } = w.vm
+        const oldInstance = contentRef.popperInstanceRef
 
         const newRef = document.createElement('div')
         newRef.classList.add('new-ref')
@@ -124,13 +156,13 @@ describe('<ElPopperContent />', () => {
         popperInjection.triggerRef.value = newRef
         await nextTick()
 
-        expect(wrapper.vm.popperInstanceRef).not.toStrictEqual(oldInstance)
+        expect(contentRef.popperInstanceRef).not.toStrictEqual(oldInstance)
 
         popperInjection.triggerRef.value = undefined
 
         await nextTick()
 
-        expect(wrapper.vm.popperInstanceRef).toBeUndefined()
+        expect(contentRef.popperInstanceRef).toBeUndefined()
       })
     })
   })
diff --git a/packages/components/popper/src/arrow.vue b/packages/components/popper/src/arrow.vue
index 7914b80e79..fb3aac4f74 100644
--- a/packages/components/popper/src/arrow.vue
+++ b/packages/components/popper/src/arrow.vue
@@ -1,5 +1,10 @@
 <template>
-  <span ref="arrowRef" :class="ns.e('arrow')" data-popper-arrow="" />
+  <span
+    ref="arrowRef"
+    :class="ns.e('arrow')"
+    :style="arrowStyle"
+    data-popper-arrow
+  />
 </template>
 
 <script lang="ts" setup>
@@ -16,7 +21,7 @@ defineOptions({
 const props = defineProps(popperArrowProps)
 
 const ns = useNamespace('popper')
-const { arrowOffset, arrowRef } = inject(
+const { arrowOffset, arrowRef, arrowStyle } = inject(
   POPPER_CONTENT_INJECTION_KEY,
   undefined
 )!
diff --git a/packages/components/popper/src/composables/index.ts b/packages/components/popper/src/composables/index.ts
new file mode 100644
index 0000000000..147080d2cb
--- /dev/null
+++ b/packages/components/popper/src/composables/index.ts
@@ -0,0 +1,3 @@
+export * from './use-content'
+export * from './use-content-dom'
+export * from './use-focus-trap'
diff --git a/packages/components/popper/src/composables/use-content-dom.ts b/packages/components/popper/src/composables/use-content-dom.ts
new file mode 100644
index 0000000000..ac290feaef
--- /dev/null
+++ b/packages/components/popper/src/composables/use-content-dom.ts
@@ -0,0 +1,59 @@
+import { computed, ref, unref } from 'vue'
+import { useNamespace, useZIndex } from '@element-plus/hooks'
+
+import type { CSSProperties, StyleValue } from 'vue'
+import type { UsePopperReturn } from '@element-plus/hooks'
+import type { UsePopperContentReturn } from './use-content'
+import type { PopperContentProps } from '../content'
+
+export const usePopperContentDOM = (
+  props: PopperContentProps,
+  {
+    attributes,
+    styles,
+    role,
+  }: Pick<UsePopperReturn, 'attributes' | 'styles'> &
+    Pick<UsePopperContentReturn, 'role'>
+) => {
+  const { nextZIndex } = useZIndex()
+  const ns = useNamespace('popper')
+
+  const contentAttrs = computed(() => unref(attributes).popper)
+  const contentZIndex = ref<number>(props.zIndex || nextZIndex())
+  const contentClass = computed(() => [
+    ns.b(),
+    ns.is('pure', props.pure),
+    ns.is(props.effect),
+    props.popperClass,
+  ])
+  const contentStyle = computed<StyleValue[]>(() => {
+    return [
+      { zIndex: unref(contentZIndex) } as CSSProperties,
+      props.popperStyle || {},
+      unref(styles).popper as CSSProperties,
+    ]
+  })
+  const ariaModal = computed<string | undefined>(() =>
+    role.value === 'dialog' ? 'false' : undefined
+  )
+  const arrowStyle = computed(
+    () => (unref(styles).arrow || {}) as CSSProperties
+  )
+
+  const updateZIndex = () => {
+    contentZIndex.value = props.zIndex || nextZIndex()
+  }
+
+  return {
+    ariaModal,
+    arrowStyle,
+    contentAttrs,
+    contentClass,
+    contentStyle,
+    contentZIndex,
+
+    updateZIndex,
+  }
+}
+
+export type UsePopperContentDOMReturn = ReturnType<typeof usePopperContentDOM>
diff --git a/packages/components/popper/src/composables/use-content.ts b/packages/components/popper/src/composables/use-content.ts
new file mode 100644
index 0000000000..1dba0b08ec
--- /dev/null
+++ b/packages/components/popper/src/composables/use-content.ts
@@ -0,0 +1,89 @@
+import { computed, inject, onMounted, ref, unref, watch } from 'vue'
+import { isUndefined } from 'lodash-unified'
+import { usePopper } from '@element-plus/hooks'
+import { POPPER_INJECTION_KEY } from '@element-plus/tokens'
+import { buildPopperOptions, unwrapMeasurableEl } from '../utils'
+import type { Modifier } from '@popperjs/core'
+
+import type { PartialOptions } from '@element-plus/hooks'
+import type { PopperContentProps } from '../content'
+
+const DEFAULT_ARROW_OFFSET = 0
+
+export const usePopperContent = (props: PopperContentProps) => {
+  const { popperInstanceRef, contentRef, triggerRef, role } = inject(
+    POPPER_INJECTION_KEY,
+    undefined
+  )!
+
+  const arrowRef = ref<HTMLElement>()
+  const arrowOffset = ref<number>()
+
+  const eventListenerModifier = computed(() => {
+    return {
+      name: 'eventListeners',
+      enabled: !!props.visible,
+    } as Modifier<'eventListeners', any>
+  })
+
+  const arrowModifier = computed(() => {
+    const arrowEl = unref(arrowRef)
+    const offset = unref(arrowOffset) ?? DEFAULT_ARROW_OFFSET
+    // Seems like the `phase` and `fn` is required by Modifier type
+    // But on its documentation they didn't specify that.
+    // Refer to https://popper.js.org/docs/v2/modifiers/arrow/
+    return {
+      name: 'arrow',
+      enabled: !isUndefined(arrowEl),
+      options: {
+        element: arrowEl,
+        padding: offset,
+      },
+    } as any
+  })
+
+  const options = computed<PartialOptions>(() => {
+    return {
+      onFirstUpdate: () => {
+        update()
+      },
+      ...buildPopperOptions(props, [
+        unref(arrowModifier),
+        unref(eventListenerModifier),
+      ]),
+    }
+  })
+
+  const computedReference = computed(
+    () => unwrapMeasurableEl(props.referenceEl) || unref(triggerRef)
+  )
+
+  const { attributes, state, styles, update, forceUpdate, instanceRef } =
+    usePopper(computedReference, contentRef, options)
+
+  watch(instanceRef, (instance) => (popperInstanceRef.value = instance))
+
+  onMounted(() => {
+    watch(
+      () => unref(computedReference)?.getBoundingClientRect(),
+      () => {
+        update()
+      }
+    )
+  })
+
+  return {
+    attributes,
+    arrowRef,
+    contentRef,
+    instanceRef,
+    state,
+    styles,
+    role,
+
+    forceUpdate,
+    update,
+  }
+}
+
+export type UsePopperContentReturn = ReturnType<typeof usePopperContent>
diff --git a/packages/components/popper/src/composables/use-focus-trap.ts b/packages/components/popper/src/composables/use-focus-trap.ts
new file mode 100644
index 0000000000..51c6043338
--- /dev/null
+++ b/packages/components/popper/src/composables/use-focus-trap.ts
@@ -0,0 +1,61 @@
+import { ref } from 'vue'
+
+import type { SetupContext } from 'vue'
+import type { PopperContentEmits, PopperContentProps } from '../content'
+
+export const usePopperContentFocusTrap = (
+  props: PopperContentProps,
+  emit: SetupContext<PopperContentEmits>['emit']
+) => {
+  const trapped = ref(false)
+  const focusStartRef = ref<'container' | 'first' | HTMLElement>()
+
+  const onFocusAfterTrapped = () => {
+    emit('focus')
+  }
+
+  const onFocusAfterReleased = (event: CustomEvent) => {
+    if (event.detail?.focusReason !== 'pointer') {
+      focusStartRef.value = 'first'
+      emit('blur')
+    }
+  }
+
+  const onFocusInTrap = (event: FocusEvent) => {
+    if (props.visible && !trapped.value) {
+      if (event.target) {
+        focusStartRef.value = event.target as typeof focusStartRef.value
+      }
+      trapped.value = true
+    }
+  }
+
+  const onFocusoutPrevented = (event: CustomEvent) => {
+    if (!props.trapping) {
+      if (event.detail.focusReason === 'pointer') {
+        event.preventDefault()
+      }
+      trapped.value = false
+    }
+  }
+
+  const onReleaseRequested = () => {
+    trapped.value = false
+    emit('close')
+  }
+
+  return {
+    focusStartRef,
+    trapped,
+
+    onFocusAfterReleased,
+    onFocusAfterTrapped,
+    onFocusInTrap,
+    onFocusoutPrevented,
+    onReleaseRequested,
+  }
+}
+
+export type UsePopperContentFocusTrapReturn = ReturnType<
+  typeof usePopperContentFocusTrap
+>
diff --git a/packages/components/popper/src/content.vue b/packages/components/popper/src/content.vue
index 41fb65dc59..141327dc25 100644
--- a/packages/components/popper/src/content.vue
+++ b/packages/components/popper/src/content.vue
@@ -1,6 +1,7 @@
 <template>
   <div
-    ref="popperContentRef"
+    ref="contentRef"
+    v-bind="contentAttrs"
     :style="contentStyle"
     :class="contentClass"
     tabindex="-1"
@@ -25,7 +26,6 @@
 
 <script lang="ts" setup>
 import {
-  computed,
   inject,
   onBeforeUnmount,
   onMounted,
@@ -36,20 +36,20 @@ import {
 } from 'vue'
 import { NOOP } from '@vue/shared'
 import { isNil } from 'lodash-unified'
-import { createPopper } from '@popperjs/core'
 import ElFocusTrap from '@element-plus/components/focus-trap'
-import { useNamespace, useZIndex } from '@element-plus/hooks'
 import {
   POPPER_CONTENT_INJECTION_KEY,
-  POPPER_INJECTION_KEY,
   formItemContextKey,
 } from '@element-plus/tokens'
 import { isElement } from '@element-plus/utils'
 import { popperContentEmits, popperContentProps } from './content'
-import { buildPopperOptions, unwrapMeasurableEl } from './utils'
+import {
+  usePopperContent,
+  usePopperContentDOM,
+  usePopperContentFocusTrap,
+} from './composables'
 
 import type { WatchStopHandle } from 'vue'
-import type { CreatePopperInstanceParams } from './content'
 
 defineOptions({
   name: 'ElPopperContent',
@@ -59,18 +59,39 @@ const emit = defineEmits(popperContentEmits)
 
 const props = defineProps(popperContentProps)
 
-const { popperInstanceRef, contentRef, triggerRef, role } = inject(
-  POPPER_INJECTION_KEY,
-  undefined
-)!
+const {
+  focusStartRef,
+  trapped,
+
+  onFocusAfterReleased,
+  onFocusAfterTrapped,
+  onFocusInTrap,
+  onFocusoutPrevented,
+  onReleaseRequested,
+} = usePopperContentFocusTrap(props, emit)
+
+const { attributes, arrowRef, contentRef, styles, instanceRef, role, update } =
+  usePopperContent(props)
+
+const {
+  ariaModal,
+  arrowStyle,
+  contentAttrs,
+  contentClass,
+  contentStyle,
+  updateZIndex,
+} = usePopperContentDOM(props, {
+  styles,
+  attributes,
+  role,
+})
+
 const formItemContext = inject(formItemContextKey, undefined)
-const { nextZIndex } = useZIndex()
-const ns = useNamespace('popper')
 const popperContentRef = ref<HTMLElement>()
-const focusStartRef = ref<'container' | 'first' | HTMLElement>('first')
-const arrowRef = ref<HTMLElement>()
 const arrowOffset = ref<number>()
+
 provide(POPPER_CONTENT_INJECTION_KEY, {
+  arrowStyle,
   arrowRef,
   arrowOffset,
 })
@@ -87,54 +108,14 @@ if (
   })
 }
 
-const contentZIndex = ref<number>(props.zIndex || nextZIndex())
-const trapped = ref<boolean>(false)
-
 let triggerTargetAriaStopWatch: WatchStopHandle | undefined = undefined
 
-const computedReference = computed(
-  () => unwrapMeasurableEl(props.referenceEl) || unref(triggerRef)
-)
-
-const contentStyle = computed(
-  () => [{ zIndex: unref(contentZIndex) }, props.popperStyle] as any
-)
-
-const contentClass = computed(() => [
-  ns.b(),
-  ns.is('pure', props.pure),
-  ns.is(props.effect),
-  props.popperClass,
-])
-
-const ariaModal = computed<string | undefined>(() => {
-  return role && role.value === 'dialog' ? 'false' : undefined
-})
-
-const createPopperInstance = ({
-  referenceEl,
-  popperContentEl,
-  arrowEl,
-}: CreatePopperInstanceParams) => {
-  const options = buildPopperOptions(props, {
-    arrowEl,
-    arrowOffset: unref(arrowOffset),
-  })
-
-  return createPopper(referenceEl, popperContentEl, options)
-}
-
 const updatePopper = (shouldUpdateZIndex = true) => {
-  unref(popperInstanceRef)?.update()
-  shouldUpdateZIndex && (contentZIndex.value = props.zIndex || nextZIndex())
+  update()
+  shouldUpdateZIndex && updateZIndex()
 }
 
 const togglePopperAlive = () => {
-  const monitorable = { name: 'eventListeners', enabled: props.visible }
-  unref(popperInstanceRef)?.setOptions?.((options) => ({
-    ...options,
-    modifiers: [...(options.modifiers || []), monitorable],
-  }))
   updatePopper(false)
   if (props.visible && props.focusOnShow) {
     trapped.value = true
@@ -143,74 +124,7 @@ const togglePopperAlive = () => {
   }
 }
 
-const onFocusAfterTrapped = () => {
-  emit('focus')
-}
-
-const onFocusAfterReleased = (event: CustomEvent) => {
-  if (event.detail?.focusReason !== 'pointer') {
-    focusStartRef.value = 'first'
-    emit('blur')
-  }
-}
-
-const onFocusInTrap = (event: FocusEvent) => {
-  if (props.visible && !trapped.value) {
-    if (event.target) {
-      focusStartRef.value = event.target as typeof focusStartRef.value
-    }
-    trapped.value = true
-  }
-}
-
-const onFocusoutPrevented = (event: CustomEvent) => {
-  if (!props.trapping) {
-    if (event.detail.focusReason === 'pointer') {
-      event.preventDefault()
-    }
-    trapped.value = false
-  }
-}
-
-const onReleaseRequested = () => {
-  trapped.value = false
-  emit('close')
-}
-
 onMounted(() => {
-  let updateHandle: WatchStopHandle
-  watch(
-    computedReference,
-    (referenceEl) => {
-      updateHandle?.()
-      const popperInstance = unref(popperInstanceRef)
-      popperInstance?.destroy?.()
-      if (referenceEl) {
-        const popperContentEl = unref(popperContentRef)!
-        contentRef.value = popperContentEl
-
-        popperInstanceRef.value = createPopperInstance({
-          referenceEl,
-          popperContentEl,
-          arrowEl: unref(arrowRef),
-        })
-
-        updateHandle = watch(
-          () => referenceEl.getBoundingClientRect(),
-          () => updatePopper(),
-          {
-            immediate: true,
-          }
-        )
-      } else {
-        popperInstanceRef.value = undefined
-      }
-    },
-    {
-      immediate: true,
-    }
-  )
-
   watch(
     () => props.triggerTargetEl,
     (triggerTargetEl, prevTriggerTargetEl) => {
@@ -243,15 +157,6 @@ onMounted(() => {
   )
 
   watch(() => props.visible, togglePopperAlive, { immediate: true })
-
-  watch(
-    () =>
-      buildPopperOptions(props, {
-        arrowEl: unref(arrowRef),
-        arrowOffset: unref(arrowOffset),
-      }),
-    (option) => popperInstanceRef.value?.setOptions(option)
-  )
 })
 
 onBeforeUnmount(() => {
@@ -267,7 +172,7 @@ defineExpose({
   /**
    * @description popperjs instance
    */
-  popperInstanceRef,
+  popperInstanceRef: instanceRef,
   /**
    * @description method for updating popper
    */
diff --git a/packages/components/popper/src/utils.ts b/packages/components/popper/src/utils.ts
index 3e9f6a825f..99d8a3a2e8 100644
--- a/packages/components/popper/src/utils.ts
+++ b/packages/components/popper/src/utils.ts
@@ -2,27 +2,22 @@ import { isClient, unrefElement } from '@vueuse/core'
 
 import type { ComponentPublicInstance } from 'vue'
 import type { MaybeRef } from '@vueuse/core'
+import type { Modifier } from '@popperjs/core'
 import type { Measurable } from '@element-plus/tokens'
 import type { PopperCoreConfigProps } from './content'
 
-type ArrowProps = {
-  arrowEl: HTMLElement | undefined
-  arrowOffset: number | undefined
-}
-
 export const buildPopperOptions = (
   props: PopperCoreConfigProps,
-  arrowProps: ArrowProps
+  modifiers: Modifier<any, any>[] = []
 ) => {
   const { placement, strategy, popperOptions } = props
   const options = {
     placement,
     strategy,
     ...popperOptions,
-    modifiers: genModifiers(props),
+    modifiers: [...genModifiers(props), ...modifiers],
   }
 
-  attachArrow(options, arrowProps)
   deriveExtraModifiers(options, popperOptions?.modifiers)
   return options
 }
@@ -70,16 +65,6 @@ function genModifiers(options: PopperCoreConfigProps) {
   ]
 }
 
-function attachArrow(options: any, { arrowEl, arrowOffset }: ArrowProps) {
-  options.modifiers.push({
-    name: 'arrow',
-    options: {
-      element: arrowEl,
-      padding: arrowOffset ?? 5,
-    },
-  } as any)
-}
-
 function deriveExtraModifiers(
   options: any,
   modifiers: PopperCoreConfigProps['popperOptions']['modifiers']
diff --git a/packages/components/slider/__tests__/slider.test.tsx b/packages/components/slider/__tests__/slider.test.tsx
index c3755080f8..0f6adad563 100644
--- a/packages/components/slider/__tests__/slider.test.tsx
+++ b/packages/components/slider/__tests__/slider.test.tsx
@@ -90,11 +90,12 @@ describe('Slider', () => {
 
   it('placement', async () => {
     const TOOLTIP_CLASS = 'custom_tooltip'
-    const PLACEMENT = 'right'
+    const PLACEMENT = 'left'
 
     mount(() => <Slider tooltip-class={TOOLTIP_CLASS} placement={PLACEMENT} />)
 
     await nextTick()
+    await nextTick() // here
 
     expect(
       (document.querySelector(`.${TOOLTIP_CLASS}`) as HTMLElement).dataset
diff --git a/packages/hooks/use-popper/index.ts b/packages/hooks/use-popper/index.ts
index 0895a4b96d..8f88b52f03 100644
--- a/packages/hooks/use-popper/index.ts
+++ b/packages/hooks/use-popper/index.ts
@@ -101,7 +101,7 @@ export const usePopper = (
   })
 
   return {
-    state: computed(() => unref(instanceRef)?.state),
+    state: computed(() => ({ ...(unref(instanceRef)?.state || {}) })),
     styles: computed(() => unref(states).styles),
     attributes: computed(() => unref(states).attributes),
     update: () => unref(instanceRef)?.update(),
@@ -119,7 +119,7 @@ function deriveState(state: State) {
   const styles = fromPairs(
     elements.map(
       (element) =>
-        [element, state.elements[element] || {}] as [
+        [element, state.styles[element] || {}] as [
           string,
           State['styles'][keyof State['styles']]
         ]
@@ -141,3 +141,5 @@ function deriveState(state: State) {
     attributes,
   }
 }
+
+export type UsePopperReturn = ReturnType<typeof usePopper>
diff --git a/packages/tokens/popper.ts b/packages/tokens/popper.ts
index 5ac1aa16e7..87578acfca 100644
--- a/packages/tokens/popper.ts
+++ b/packages/tokens/popper.ts
@@ -1,4 +1,4 @@
-import type { ComputedRef, InjectionKey, Ref } from 'vue'
+import type { CSSProperties, ComputedRef, InjectionKey, Ref } from 'vue'
 import type { Instance } from '@popperjs/core'
 
 export type Measurable = {
@@ -21,6 +21,7 @@ export type ElPopperInjectionContext = {
 export type ElPopperContentInjectionContext = {
   arrowRef: Ref<HTMLElement | undefined>
   arrowOffset: Ref<number | undefined>
+  arrowStyle: ComputedRef<CSSProperties>
 }
 
 export const POPPER_INJECTION_KEY: InjectionKey<ElPopperInjectionContext> =