From 62561891002a0c19f71cb1649d73f104f1de6740 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=89=E5=92=B2=E6=99=BA=E5=AD=90?= <sxzz@sxzz.moe>
Date: Wed, 22 Sep 2021 01:19:04 +0800
Subject: [PATCH] refactor(components): refactor pagination (#3526)

* refactor(components): refactor pagination

* fix: tests

* fix: emits

* refactor: improve props
---
 .../pagination/__tests__/pagination.spec.ts   |   2 +-
 packages/components/pagination/index.ts       |  15 +-
 .../src/{ => components}/jumper.vue           |  24 +-
 .../pagination/src/{ => components}/next.vue  |  40 +-
 .../pagination/src/{ => components}/pager.vue |  39 +-
 .../pagination/src/{ => components}/prev.vue  |  31 +-
 .../pagination/src/{ => components}/sizes.vue |  50 +--
 .../pagination/src/{ => components}/total.vue |  21 +-
 packages/components/pagination/src/index.ts   | 346 -----------------
 .../components/pagination/src/pagination.ts   | 362 ++++++++++++++++--
 .../pagination/src/usePagination.ts           |  13 +-
 packages/tokens/index.ts                      |   1 +
 packages/tokens/pagination.ts                 |  12 +
 packages/utils/props.ts                       |   3 +
 packages/utils/types.ts                       |   2 +
 15 files changed, 474 insertions(+), 487 deletions(-)
 rename packages/components/pagination/src/{ => components}/jumper.vue (73%)
 rename packages/components/pagination/src/{ => components}/next.vue (64%)
 rename packages/components/pagination/src/{ => components}/pager.vue (94%)
 rename packages/components/pagination/src/{ => components}/prev.vue (65%)
 rename packages/components/pagination/src/{ => components}/sizes.vue (69%)
 rename packages/components/pagination/src/{ => components}/total.vue (58%)
 delete mode 100644 packages/components/pagination/src/index.ts
 create mode 100644 packages/tokens/pagination.ts

diff --git a/packages/components/pagination/__tests__/pagination.spec.ts b/packages/components/pagination/__tests__/pagination.spec.ts
index d90c0e8b14..032ee2a8f6 100644
--- a/packages/components/pagination/__tests__/pagination.spec.ts
+++ b/packages/components/pagination/__tests__/pagination.spec.ts
@@ -1,6 +1,6 @@
 import { nextTick, ref, h } from 'vue'
 import { mount } from '@vue/test-utils'
-import Pagination from '../src/index'
+import Pagination from '../src/pagination'
 import type { VueWrapper } from '@vue/test-utils'
 
 const assertElementsExistence = (
diff --git a/packages/components/pagination/index.ts b/packages/components/pagination/index.ts
index e415f7ba44..ea97112bb4 100644
--- a/packages/components/pagination/index.ts
+++ b/packages/components/pagination/index.ts
@@ -1,15 +1,8 @@
-import Pagination from './src'
+import { withInstall } from '@element-plus/utils/with-install'
 
-import type { App } from 'vue'
-import type { SFCWithInstall } from '@element-plus/utils/types'
+import Pagination from './src/pagination'
 
-const _Pagination = Pagination as SFCWithInstall<typeof Pagination>
-
-_Pagination.install = (app: App) => {
-  app.component(_Pagination.name, _Pagination)
-}
-
-export default _Pagination
-export const ElPagination = _Pagination
+export const ElPagination = withInstall(Pagination)
+export default ElPagination
 
 export * from './src/pagination'
diff --git a/packages/components/pagination/src/jumper.vue b/packages/components/pagination/src/components/jumper.vue
similarity index 73%
rename from packages/components/pagination/src/jumper.vue
rename to packages/components/pagination/src/components/jumper.vue
index 7cd77c33ad..48e80bc597 100644
--- a/packages/components/pagination/src/jumper.vue
+++ b/packages/components/pagination/src/components/jumper.vue
@@ -20,37 +20,37 @@
 import { computed, defineComponent, ref } from 'vue'
 import { useLocaleInject } from '@element-plus/hooks'
 import ElInput from '@element-plus/components/input'
-import { usePagination } from './usePagination'
-
-import type { Nullable } from '@element-plus/utils/types'
+import { usePagination } from '../usePagination'
 
 export default defineComponent({
+  name: 'ElPaginationJumper',
   components: {
     ElInput,
   },
+
   setup() {
     const { t } = useLocaleInject()
-    const { pagination, pageCount, disabled, currentPage } = usePagination()
-    const userInput = ref<Nullable<number>>(null)
-    const innerValue = computed(() => userInput.value ?? currentPage.value)
+    const { pageCount, disabled, currentPage, changeEvent } = usePagination()
+    const userInput = ref<number>()
+    const innerValue = computed(() => userInput.value ?? currentPage?.value)
 
     function handleInput(val: number | string) {
-      userInput.value = Number(val)
+      userInput.value = +val
     }
 
     function handleChange(val: number | string) {
-      pagination?.changeEvent(Number(val))
-      userInput.value = null
+      changeEvent?.(+val)
+      userInput.value = undefined
     }
 
     return {
-      t,
-      userInput,
       pageCount,
       disabled,
+      innerValue,
+
+      t,
       handleInput,
       handleChange,
-      innerValue,
     }
   },
 })
diff --git a/packages/components/pagination/src/next.vue b/packages/components/pagination/src/components/next.vue
similarity index 64%
rename from packages/components/pagination/src/next.vue
rename to packages/components/pagination/src/components/next.vue
index 693f130295..3f34ff300d 100644
--- a/packages/components/pagination/src/next.vue
+++ b/packages/components/pagination/src/components/next.vue
@@ -4,7 +4,7 @@
     class="btn-next"
     :disabled="internalDisabled"
     :aria-disabled="internalDisabled"
-    @click.self.prevent
+    @click="$emit('click', $event)"
   >
     <span v-if="nextText">{{ nextText }}</span>
     <i v-else class="el-icon el-icon-arrow-right"></i>
@@ -13,23 +13,29 @@
 
 <script lang="ts">
 import { defineComponent, computed } from 'vue'
-export default defineComponent({
-  name: 'Next',
-  props: {
-    disabled: Boolean,
-    currentPage: {
-      type: Number,
-      default: 1,
-    },
-    pageCount: {
-      type: Number,
-      default: 50,
-    },
-    nextText: {
-      type: String,
-      default: '',
-    },
+
+const paginationNextProps = {
+  disabled: Boolean,
+  currentPage: {
+    type: Number,
+    default: 1,
   },
+  pageCount: {
+    type: Number,
+    default: 50,
+  },
+  nextText: {
+    type: String,
+    default: '',
+  },
+} as const
+
+export default defineComponent({
+  name: 'ElPaginationNext',
+
+  props: paginationNextProps,
+  emits: ['click'],
+
   setup(props) {
     const internalDisabled = computed(
       () =>
diff --git a/packages/components/pagination/src/pager.vue b/packages/components/pagination/src/components/pager.vue
similarity index 94%
rename from packages/components/pagination/src/pager.vue
rename to packages/components/pagination/src/components/pager.vue
index b6825060f9..de8dc3fcbc 100644
--- a/packages/components/pagination/src/pager.vue
+++ b/packages/components/pagination/src/components/pager.vue
@@ -47,28 +47,34 @@
 <script lang="ts">
 import { defineComponent, ref, computed, watchEffect } from 'vue'
 
-export default defineComponent({
-  name: 'ElPager',
-  props: {
-    currentPage: {
-      type: Number,
-      default: 1,
-    },
-    pageCount: {
-      type: Number,
-    },
-    pagerCount: {
-      type: Number,
-      default: 7,
-    },
-    disabled: Boolean,
+const paginationPagerProps = {
+  currentPage: {
+    type: Number,
+    default: 1,
   },
+  pageCount: {
+    type: Number,
+    required: true,
+  },
+  pagerCount: {
+    type: Number,
+    default: 7,
+  },
+  disabled: Boolean,
+} as const
+
+export default defineComponent({
+  name: 'ElPaginationPager',
+
+  props: paginationPagerProps,
   emits: ['change'],
+
   setup(props, { emit }) {
     const showPrevMore = ref(false)
     const showNextMore = ref(false)
     const quicknextIconClass = ref('el-icon-more')
     const quickprevIconClass = ref('el-icon-more')
+
     const pagers = computed(() => {
       const pagerCount = props.pagerCount
       const halfPagerCount = (pagerCount - 1) / 2
@@ -85,7 +91,7 @@ export default defineComponent({
           showNextMore = true
         }
       }
-      const array = []
+      const array: number[] = []
       if (showPrevMore && !showNextMore) {
         const startPage = pageCount - (pagerCount - 2)
         for (let i = startPage; i < pageCount; i++) {
@@ -190,6 +196,7 @@ export default defineComponent({
       quicknextIconClass,
       quickprevIconClass,
       pagers,
+
       onMouseenter,
       onPagerClick,
       onEnter,
diff --git a/packages/components/pagination/src/prev.vue b/packages/components/pagination/src/components/prev.vue
similarity index 65%
rename from packages/components/pagination/src/prev.vue
rename to packages/components/pagination/src/components/prev.vue
index fddb050d0e..b95d93740e 100644
--- a/packages/components/pagination/src/prev.vue
+++ b/packages/components/pagination/src/components/prev.vue
@@ -4,7 +4,7 @@
     class="btn-prev"
     :disabled="internalDisabled"
     :aria-disabled="internalDisabled"
-    @click.self.prevent
+    @click="$emit('click', $event)"
   >
     <span v-if="prevText">{{ prevText }}</span>
     <i v-else class="el-icon el-icon-arrow-left"></i>
@@ -14,19 +14,24 @@
 <script lang="ts">
 import { defineComponent, computed } from 'vue'
 
-export default defineComponent({
-  name: 'Prev',
-  props: {
-    disabled: Boolean,
-    currentPage: {
-      type: Number,
-      default: 1,
-    },
-    prevText: {
-      type: String,
-      default: '',
-    },
+const paginationPrevProps = {
+  disabled: Boolean,
+  currentPage: {
+    type: Number,
+    default: 1,
   },
+  prevText: {
+    type: String,
+    default: '',
+  },
+} as const
+
+export default defineComponent({
+  name: 'ElPaginationPrev',
+
+  props: paginationPrevProps,
+  emits: ['click'],
+
   setup(props) {
     const internalDisabled = computed(
       () => props.disabled || props.currentPage <= 1
diff --git a/packages/components/pagination/src/sizes.vue b/packages/components/pagination/src/components/sizes.vue
similarity index 69%
rename from packages/components/pagination/src/sizes.vue
rename to packages/components/pagination/src/components/sizes.vue
index 4175f98d30..15788c9a65 100644
--- a/packages/components/pagination/src/sizes.vue
+++ b/packages/components/pagination/src/components/sizes.vue
@@ -20,39 +20,44 @@
 <script lang="ts">
 import { defineComponent, watch, computed, ref } from 'vue'
 import isEqual from 'lodash/isEqual'
-import ElSelect from '@element-plus/components/select'
+import { ElSelect, ElOption } from '@element-plus/components/select'
 import { useLocaleInject } from '@element-plus/hooks'
-import { usePagination } from './usePagination'
+import { buildProp, mutable } from '@element-plus/utils/props'
+import { usePagination } from '../usePagination'
 
-import type { PropType } from 'vue'
 import type { Nullable } from '@element-plus/utils/types'
 
-const { Option: ElOption } = ElSelect
+const defaultPageSizes = mutable([10, 20, 30, 40, 50, 100] as const)
+const paginationSizesProps = {
+  pageSize: {
+    type: Number,
+    required: true,
+  },
+  pageSizes: buildProp<number[], false, typeof defaultPageSizes>({
+    type: Array,
+    default: () => defaultPageSizes,
+  } as const),
+  popperClass: {
+    type: String,
+    default: '',
+  },
+  disabled: Boolean,
+} as const
 
 export default defineComponent({
-  name: 'Sizes',
+  name: 'ElPaginationSizes',
+
   components: {
     ElSelect,
     ElOption,
   },
-  props: {
-    pageSize: Number,
-    pageSizes: {
-      type: Array as PropType<Array<number>>,
-      default: () => {
-        return [10, 20, 30, 40, 50, 100]
-      },
-    },
-    popperClass: {
-      type: String,
-      default: '',
-    },
-    disabled: Boolean,
-  },
+
+  props: paginationSizesProps,
   emits: ['page-size-change'],
+
   setup(props, { emit }) {
     const { t } = useLocaleInject()
-    const { pagination } = usePagination()
+    const pagination = usePagination()
     const innerPageSize = ref<Nullable<number>>(props.pageSize)
 
     watch(
@@ -81,14 +86,15 @@ export default defineComponent({
     function handleChange(val: number) {
       if (val !== innerPageSize.value) {
         innerPageSize.value = val
-        pagination?.handleSizeChange(Number(val))
+        pagination.handleSizeChange?.(Number(val))
       }
     }
 
     return {
-      t,
       innerPagesizes,
       innerPageSize,
+
+      t,
       handleChange,
     }
   },
diff --git a/packages/components/pagination/src/total.vue b/packages/components/pagination/src/components/total.vue
similarity index 58%
rename from packages/components/pagination/src/total.vue
rename to packages/components/pagination/src/components/total.vue
index ff3cb0790f..b2a19cbd0a 100644
--- a/packages/components/pagination/src/total.vue
+++ b/packages/components/pagination/src/components/total.vue
@@ -12,14 +12,21 @@
 import { defineComponent } from 'vue'
 import { useLocaleInject } from '@element-plus/hooks'
 
-export default defineComponent({
-  name: 'Total',
-  props: {
-    total: {
-      type: Number,
-      default: 1000,
-    },
+import type { ExtractPropTypes } from 'vue'
+
+const paginationTotalProps = {
+  total: {
+    type: Number,
+    default: 1000,
   },
+} as const
+export type PaginationTotalProps = ExtractPropTypes<typeof paginationTotalProps>
+
+export default defineComponent({
+  name: 'ElPaginationTotal',
+
+  props: paginationTotalProps,
+
   setup() {
     const { t } = useLocaleInject()
     return {
diff --git a/packages/components/pagination/src/index.ts b/packages/components/pagination/src/index.ts
deleted file mode 100644
index 3d907974a5..0000000000
--- a/packages/components/pagination/src/index.ts
+++ /dev/null
@@ -1,346 +0,0 @@
-import {
-  h,
-  ref,
-  provide,
-  computed,
-  defineComponent,
-  getCurrentInstance,
-  watch,
-} from 'vue'
-import { debugWarn } from '@element-plus/utils/error'
-import { useLocaleInject } from '@element-plus/hooks'
-
-import Prev from './prev.vue'
-import Next from './next.vue'
-import Sizes from './sizes.vue'
-import Jumper from './jumper.vue'
-import Total from './total.vue'
-import Pager from './pager.vue'
-
-import type { IPagination } from './pagination'
-
-/**
- * It it user's responsibility to guarantee that the value of props.total... is number
- * (same as pageSize, defaultPageSize, currentPage, defaultCurrentPage, pageCount)
- * Otherwise we can reasonable infer that the corresponding field is absent
- */
-const isAbsent = (v: unknown) => typeof v !== 'number'
-
-const componentName = 'ElPagination'
-
-export default defineComponent({
-  name: componentName,
-
-  components: {
-    Prev,
-    Next,
-    Sizes,
-    Jumper,
-    Total,
-    Pager,
-  },
-  props: {
-    total: {
-      type: Number,
-    },
-
-    pageSize: {
-      type: Number,
-    },
-
-    defaultPageSize: {
-      type: Number,
-    },
-
-    currentPage: {
-      type: Number,
-    },
-
-    defaultCurrentPage: {
-      type: Number,
-    },
-
-    pageCount: {
-      type: Number,
-    },
-
-    pagerCount: {
-      type: Number,
-      validator: (value: number) => {
-        return (
-          (value | 0) === value && value > 4 && value < 22 && value % 2 === 1
-        )
-      },
-      default: 7,
-    },
-
-    layout: {
-      type: String,
-      default: 'prev, pager, next, jumper, ->, total',
-    },
-
-    pageSizes: {
-      type: Array,
-      default: () => {
-        return [10, 20, 30, 40, 50, 100]
-      },
-    },
-
-    popperClass: {
-      type: String,
-      default: '',
-    },
-
-    prevText: {
-      type: String,
-      default: '',
-    },
-
-    nextText: {
-      type: String,
-      default: '',
-    },
-
-    small: Boolean,
-
-    background: Boolean,
-
-    disabled: Boolean,
-
-    hideOnSinglePage: Boolean,
-  },
-
-  emits: [
-    'update:current-page',
-    'update:page-size',
-    // events below are depracated
-    // v-model:current-page and v-model:page-size are better choices
-    'size-change',
-    'current-change',
-    'prev-click',
-    'next-click',
-  ],
-  setup(props, { emit, slots }) {
-    const { t } = useLocaleInject()
-    const vnodeProps = getCurrentInstance().vnode.props || {}
-    // we can find @xxx="xxx" props on `vnodeProps` to check if user bind corresponding events
-    const hasCurrentPageListener =
-      'onUpdate:currentPage' in vnodeProps ||
-      'onUpdate:current-page' in vnodeProps ||
-      'onCurrentChange' in vnodeProps
-    const hasPageSizeListener =
-      'onUpdate:pageSize' in vnodeProps ||
-      'onUpdate:page-size' in vnodeProps ||
-      'onSizeChange' in vnodeProps
-    const assertValidUsage = computed(() => {
-      // Users have to set either one, otherwise count of pages cannot be determined
-      if (isAbsent(props.total) && isAbsent(props.pageCount)) return false
-      // <el-pagination ...otherProps :current-page="xxx" /> without corresponding listener is forbidden now
-      // Users have to use two way binding of `currentPage`
-      // If users just want to provide a default value, `defaultCurrentPage` is here for you
-      if (!isAbsent(props.currentPage) && !hasCurrentPageListener) return false
-      // When you want to change sizes, things get more complex, detailed below
-      // Basically the most important value we need is page count
-      // either directly from props.pageCount
-      // or calculated from props.total
-      // we will take props.pageCount precedence over props.total
-      if (props.layout.includes('sizes')) {
-        if (!isAbsent(props.pageCount)) {
-          // if props.pageCount is assign by user, then user have to watch pageSize change
-          // and recalculate pageCount
-          if (!hasPageSizeListener) return false
-        } else if (!isAbsent(props.total)) {
-          // Otherwise, we will see if user have props.pageSize defined
-          // If so, meaning user want to have pageSize controlled himself/herself from component
-          // Thus page size listener is required
-          // users are account for page size change
-          if (!isAbsent(props.pageSize)) {
-            if (!hasPageSizeListener) {
-              return false
-            }
-          } else {
-            // (else block just for explaination)
-            // else page size is controlled by el-pagination internally
-          }
-        }
-      }
-      return true
-    })
-
-    const innerPageSize = ref(
-      isAbsent(props.defaultPageSize) ? 10 : props.defaultPageSize
-    )
-    const innerCurrentPage = ref(
-      isAbsent(props.defaultCurrentPage) ? 1 : props.defaultCurrentPage
-    )
-
-    const pageSizeBridge = computed({
-      get() {
-        return isAbsent(props.pageSize) ? innerPageSize.value : props.pageSize
-      },
-      set(v: number) {
-        if (isAbsent(props.pageSize)) {
-          innerPageSize.value = v
-        }
-        if (hasPageSizeListener) {
-          emit('update:page-size', v)
-          emit('size-change', v)
-        }
-      },
-    })
-
-    const pageCountBridge = computed<number>(() => {
-      let pageCount = 0
-      if (!isAbsent(props.pageCount)) {
-        pageCount = props.pageCount
-      } else if (!isAbsent(props.total)) {
-        pageCount = Math.max(1, Math.ceil(props.total / pageSizeBridge.value))
-      }
-      return pageCount
-    })
-
-    const currentPageBridge = computed<number>({
-      get() {
-        return isAbsent(props.currentPage)
-          ? innerCurrentPage.value
-          : props.currentPage
-      },
-      set(v) {
-        let newCurrentPage = v
-        if (v < 1) {
-          newCurrentPage = 1
-        } else if (v > pageCountBridge.value) {
-          newCurrentPage = pageCountBridge.value
-        }
-        if (isAbsent(props.currentPage)) {
-          innerCurrentPage.value = newCurrentPage
-        }
-        if (hasCurrentPageListener) {
-          emit('update:current-page', newCurrentPage)
-          emit('current-change', newCurrentPage)
-        }
-      },
-    })
-
-    watch(pageCountBridge, (val) => {
-      if (currentPageBridge.value > val) currentPageBridge.value = val
-    })
-
-    function handleCurrentChange(val: number) {
-      currentPageBridge.value = val
-    }
-
-    function handleSizeChange(val: number) {
-      pageSizeBridge.value = val
-      const newPageCount = pageCountBridge.value
-      if (currentPageBridge.value > newPageCount) {
-        currentPageBridge.value = newPageCount
-      }
-    }
-
-    function prev() {
-      if (props.disabled) return
-      currentPageBridge.value -= 1
-      emit('prev-click', currentPageBridge.value)
-    }
-
-    function next() {
-      if (props.disabled) return
-      currentPageBridge.value += 1
-      emit('next-click', currentPageBridge.value)
-    }
-
-    provide<IPagination>('pagination', {
-      pageCount: pageCountBridge,
-      disabled: computed(() => props.disabled),
-      currentPage: currentPageBridge,
-      changeEvent: handleCurrentChange,
-      handleSizeChange,
-    })
-
-    return () => {
-      if (!assertValidUsage.value) {
-        debugWarn(componentName, t('el.pagination.deprecationWarning'))
-        return null
-      }
-      if (!props.layout) return null
-      if (props.hideOnSinglePage && pageCountBridge.value <= 1) return null
-      const rootChildren = []
-      const rightWrapperChildren = []
-      const rightWrapperRoot = h(
-        'div',
-        { class: 'el-pagination__rightwrapper' },
-        rightWrapperChildren
-      )
-      const TEMPLATE_MAP = {
-        prev: h(Prev, {
-          disabled: props.disabled,
-          currentPage: currentPageBridge.value,
-          prevText: props.prevText,
-          onClick: prev,
-        }),
-        jumper: h(Jumper as any),
-        pager: h(Pager as any, {
-          currentPage: currentPageBridge.value,
-          pageCount: pageCountBridge.value,
-          pagerCount: props.pagerCount,
-          onChange: handleCurrentChange,
-          disabled: props.disabled,
-        }),
-        next: h(Next as any, {
-          disabled: props.disabled,
-          currentPage: currentPageBridge.value,
-          pageCount: pageCountBridge.value,
-          nextText: props.nextText,
-          onClick: next,
-        }),
-        sizes: h(Sizes as any, {
-          pageSize: pageSizeBridge.value,
-          pageSizes: props.pageSizes,
-          popperClass: props.popperClass,
-          disabled: props.disabled,
-        }),
-        slot: slots?.default?.() ?? null,
-        total: h(Total, { total: isAbsent(props.total) ? 0 : props.total }),
-      }
-
-      const components = props.layout
-        .split(',')
-        .map((item: string) => item.trim())
-
-      let haveRightWrapper = false
-
-      components.forEach((c: keyof typeof TEMPLATE_MAP | '->') => {
-        if (c === '->') {
-          haveRightWrapper = true
-          return
-        }
-        if (!haveRightWrapper) {
-          rootChildren.push(TEMPLATE_MAP[c])
-        } else {
-          rightWrapperChildren.push(TEMPLATE_MAP[c])
-        }
-      })
-
-      if (haveRightWrapper && rightWrapperChildren.length > 0) {
-        rootChildren.unshift(rightWrapperRoot)
-      }
-
-      return h(
-        'div',
-        {
-          role: 'pagination',
-          'aria-label': 'pagination',
-          class: [
-            'el-pagination',
-            {
-              'is-background': props.background,
-              'el-pagination--small': props.small,
-            },
-          ],
-        },
-        rootChildren
-      )
-    }
-  },
-})
diff --git a/packages/components/pagination/src/pagination.ts b/packages/components/pagination/src/pagination.ts
index 2ef41607ff..783da9d884 100644
--- a/packages/components/pagination/src/pagination.ts
+++ b/packages/components/pagination/src/pagination.ts
@@ -1,35 +1,335 @@
-import type { ComputedRef } from 'vue'
-import type { AnyFunction } from '@element-plus/utils/types'
+import {
+  h,
+  ref,
+  provide,
+  computed,
+  defineComponent,
+  getCurrentInstance,
+  watch,
+} from 'vue'
+import { useLocaleInject } from '@element-plus/hooks'
+import { debugWarn } from '@element-plus/utils/error'
+import { buildProp, mutable } from '@element-plus/utils/props'
+import { elPaginationKey } from '@element-plus/tokens'
 
-export interface IPagination {
-  currentPage?: ComputedRef<number>
-  pageCount?: ComputedRef<number>
-  disabled?: ComputedRef<boolean>
-  changeEvent?: AnyFunction<any>
-  handleSizeChange?: AnyFunction<any>
-}
+import Prev from './components/prev.vue'
+import Next from './components/next.vue'
+import Sizes from './components/sizes.vue'
+import Jumper from './components/jumper.vue'
+import Total from './components/total.vue'
+import Pager from './components/pager.vue'
 
-export interface IPaginationProps {
-  pageSize: number
-  small: boolean
-  total: number
-  pageCount: number
-  pagerCount: number
-  currentPage: number
-  layout: Record<string, string | undefined>
-  pageSizes: Array<number>
-  popperClass: string
-  prevText: string
-  nextText: string
-  background: boolean
-  disabled: boolean
-  hideOnSinglePage: boolean
-}
+import type { VNode, ExtractPropTypes } from 'vue'
 
-export interface IPaginationSetups {
-  currentPage: number
-  pageCount: number
-  pagerCount: number
-  disabled: boolean
-  pageSizes: Array<number>
+/**
+ * It it user's responsibility to guarantee that the value of props.total... is number
+ * (same as pageSize, defaultPageSize, currentPage, defaultCurrentPage, pageCount)
+ * Otherwise we can reasonable infer that the corresponding field is absent
+ */
+const isAbsent = (v: unknown): v is undefined => typeof v !== 'number'
+
+type LayoutKey =
+  | 'prev'
+  | 'pager'
+  | 'next'
+  | 'jumper'
+  | '->'
+  | 'total'
+  | 'sizes'
+  | 'slot'
+
+const defaultPageSizes = mutable([10, 20, 30, 40, 50, 100] as const)
+
+export const paginationProps = {
+  total: Number,
+  pageSize: Number,
+  defaultPageSize: Number,
+  currentPage: Number,
+  defaultCurrentPage: Number,
+  pageCount: Number,
+  pagerCount: {
+    type: Number,
+    validator: (value: unknown) => {
+      return (
+        typeof value === 'number' &&
+        (value | 0) === value &&
+        value > 4 &&
+        value < 22 &&
+        value % 2 === 1
+      )
+    },
+    default: 7,
+  },
+  layout: {
+    type: String,
+    default: (
+      ['prev', 'pager', 'next', 'jumper', '->', 'total'] as LayoutKey[]
+    ).join(', '),
+  },
+  pageSizes: buildProp<number[], false, typeof defaultPageSizes>({
+    type: Array,
+    default: () => defaultPageSizes,
+  }),
+  popperClass: {
+    type: String,
+    default: '',
+  },
+  prevText: {
+    type: String,
+    default: '',
+  },
+  nextText: {
+    type: String,
+    default: '',
+  },
+  small: Boolean,
+  background: Boolean,
+  disabled: Boolean,
+  hideOnSinglePage: Boolean,
+} as const
+export type PaginationProps = ExtractPropTypes<typeof paginationProps>
+
+export const paginationEmits = {
+  'update:current-page': (val: number) => typeof val === 'number',
+  'update:page-size': (val: number) => typeof val === 'number',
+  'size-change': (val: number) => typeof val === 'number',
+  'current-change': (val: number) => typeof val === 'number',
+  'prev-click': (val: number) => typeof val === 'number',
+  'next-click': (val: number) => typeof val === 'number',
 }
+export type PaginationEmits = typeof paginationEmits
+
+const componentName = 'ElPagination'
+export default defineComponent({
+  name: componentName,
+
+  props: paginationProps,
+  emits: paginationEmits,
+
+  setup(props, { emit, slots }) {
+    const { t } = useLocaleInject()
+    const vnodeProps = getCurrentInstance()!.vnode.props || {}
+    // we can find @xxx="xxx" props on `vnodeProps` to check if user bind corresponding events
+    const hasCurrentPageListener =
+      'onUpdate:currentPage' in vnodeProps ||
+      'onUpdate:current-page' in vnodeProps ||
+      'onCurrentChange' in vnodeProps
+    const hasPageSizeListener =
+      'onUpdate:pageSize' in vnodeProps ||
+      'onUpdate:page-size' in vnodeProps ||
+      'onSizeChange' in vnodeProps
+    const assertValidUsage = computed(() => {
+      // Users have to set either one, otherwise count of pages cannot be determined
+      if (isAbsent(props.total) && isAbsent(props.pageCount)) return false
+      // <el-pagination ...otherProps :current-page="xxx" /> without corresponding listener is forbidden now
+      // Users have to use two way binding of `currentPage`
+      // If users just want to provide a default value, `defaultCurrentPage` is here for you
+      if (!isAbsent(props.currentPage) && !hasCurrentPageListener) return false
+      // When you want to change sizes, things get more complex, detailed below
+      // Basically the most important value we need is page count
+      // either directly from props.pageCount
+      // or calculated from props.total
+      // we will take props.pageCount precedence over props.total
+      if (props.layout.includes('sizes')) {
+        if (!isAbsent(props.pageCount)) {
+          // if props.pageCount is assign by user, then user have to watch pageSize change
+          // and recalculate pageCount
+          if (!hasPageSizeListener) return false
+        } else if (!isAbsent(props.total)) {
+          // Otherwise, we will see if user have props.pageSize defined
+          // If so, meaning user want to have pageSize controlled himself/herself from component
+          // Thus page size listener is required
+          // users are account for page size change
+          if (!isAbsent(props.pageSize)) {
+            if (!hasPageSizeListener) {
+              return false
+            }
+          } else {
+            // (else block just for explaination)
+            // else page size is controlled by el-pagination internally
+          }
+        }
+      }
+      return true
+    })
+
+    const innerPageSize = ref(
+      isAbsent(props.defaultPageSize) ? 10 : props.defaultPageSize
+    )
+    const innerCurrentPage = ref(
+      isAbsent(props.defaultCurrentPage) ? 1 : props.defaultCurrentPage
+    )
+
+    const pageSizeBridge = computed({
+      get() {
+        return isAbsent(props.pageSize) ? innerPageSize.value : props.pageSize
+      },
+      set(v: number) {
+        if (isAbsent(props.pageSize)) {
+          innerPageSize.value = v
+        }
+        if (hasPageSizeListener) {
+          emit('update:page-size', v)
+          emit('size-change', v)
+        }
+      },
+    })
+
+    const pageCountBridge = computed<number>(() => {
+      let pageCount = 0
+      if (!isAbsent(props.pageCount)) {
+        pageCount = props.pageCount
+      } else if (!isAbsent(props.total)) {
+        pageCount = Math.max(1, Math.ceil(props.total / pageSizeBridge.value))
+      }
+      return pageCount
+    })
+
+    const currentPageBridge = computed<number>({
+      get() {
+        return isAbsent(props.currentPage)
+          ? innerCurrentPage.value
+          : props.currentPage
+      },
+      set(v) {
+        let newCurrentPage = v
+        if (v < 1) {
+          newCurrentPage = 1
+        } else if (v > pageCountBridge.value) {
+          newCurrentPage = pageCountBridge.value
+        }
+        if (isAbsent(props.currentPage)) {
+          innerCurrentPage.value = newCurrentPage
+        }
+        if (hasCurrentPageListener) {
+          emit('update:current-page', newCurrentPage)
+          emit('current-change', newCurrentPage)
+        }
+      },
+    })
+
+    watch(pageCountBridge, (val) => {
+      if (currentPageBridge.value > val) currentPageBridge.value = val
+    })
+
+    function handleCurrentChange(val: number) {
+      currentPageBridge.value = val
+    }
+
+    function handleSizeChange(val: number) {
+      pageSizeBridge.value = val
+      const newPageCount = pageCountBridge.value
+      if (currentPageBridge.value > newPageCount) {
+        currentPageBridge.value = newPageCount
+      }
+    }
+
+    function prev() {
+      if (props.disabled) return
+      currentPageBridge.value -= 1
+      emit('prev-click', currentPageBridge.value)
+    }
+
+    function next() {
+      if (props.disabled) return
+      currentPageBridge.value += 1
+      emit('next-click', currentPageBridge.value)
+    }
+
+    provide(elPaginationKey, {
+      pageCount: pageCountBridge,
+      disabled: computed(() => props.disabled),
+      currentPage: currentPageBridge,
+      changeEvent: handleCurrentChange,
+      handleSizeChange,
+    })
+
+    return () => {
+      if (!assertValidUsage.value) {
+        debugWarn(componentName, t('el.pagination.deprecationWarning'))
+        return null
+      }
+      if (!props.layout) return null
+      if (props.hideOnSinglePage && pageCountBridge.value <= 1) return null
+      const rootChildren: Array<VNode | VNode[] | null> = []
+      const rightWrapperChildren: Array<VNode | VNode[] | null> = []
+      const rightWrapperRoot = h(
+        'div',
+        { class: 'el-pagination__rightwrapper' },
+        rightWrapperChildren
+      )
+      const TEMPLATE_MAP: Record<
+        Exclude<LayoutKey, '->'>,
+        VNode | VNode[] | null
+      > = {
+        prev: h(Prev, {
+          disabled: props.disabled,
+          currentPage: currentPageBridge.value,
+          prevText: props.prevText,
+          onClick: prev,
+        }),
+        jumper: h(Jumper),
+        pager: h(Pager, {
+          currentPage: currentPageBridge.value,
+          pageCount: pageCountBridge.value,
+          pagerCount: props.pagerCount,
+          onChange: handleCurrentChange,
+          disabled: props.disabled,
+        }),
+        next: h(Next, {
+          disabled: props.disabled,
+          currentPage: currentPageBridge.value,
+          pageCount: pageCountBridge.value,
+          nextText: props.nextText,
+          onClick: next,
+        }),
+        sizes: h(Sizes, {
+          pageSize: pageSizeBridge.value,
+          pageSizes: props.pageSizes,
+          popperClass: props.popperClass,
+          disabled: props.disabled,
+        }),
+        slot: slots?.default?.() ?? null,
+        total: h(Total, { total: isAbsent(props.total) ? 0 : props.total }),
+      }
+
+      const components = props.layout
+        .split(',')
+        .map((item: string) => item.trim()) as LayoutKey[]
+
+      let haveRightWrapper = false
+
+      components.forEach((c) => {
+        if (c === '->') {
+          haveRightWrapper = true
+          return
+        }
+        if (!haveRightWrapper) {
+          rootChildren.push(TEMPLATE_MAP[c])
+        } else {
+          rightWrapperChildren.push(TEMPLATE_MAP[c])
+        }
+      })
+
+      if (haveRightWrapper && rightWrapperChildren.length > 0) {
+        rootChildren.unshift(rightWrapperRoot)
+      }
+
+      return h(
+        'div',
+        {
+          role: 'pagination',
+          'aria-label': 'pagination',
+          class: [
+            'el-pagination',
+            {
+              'is-background': props.background,
+              'el-pagination--small': props.small,
+            },
+          ],
+        },
+        rootChildren
+      )
+    }
+  },
+})
diff --git a/packages/components/pagination/src/usePagination.ts b/packages/components/pagination/src/usePagination.ts
index da716ac448..aa49fa3929 100644
--- a/packages/components/pagination/src/usePagination.ts
+++ b/packages/components/pagination/src/usePagination.ts
@@ -1,13 +1,4 @@
 import { inject } from 'vue'
-import type { IPagination } from './pagination'
+import { elPaginationKey } from '@element-plus/tokens'
 
-export const usePagination = () => {
-  const pagination = inject<IPagination>('pagination', {})
-
-  return {
-    pagination,
-    pageCount: pagination.pageCount,
-    disabled: pagination.disabled,
-    currentPage: pagination.currentPage,
-  }
-}
+export const usePagination = () => inject(elPaginationKey, {})
diff --git a/packages/tokens/index.ts b/packages/tokens/index.ts
index 30b035335d..a2d123c3c1 100644
--- a/packages/tokens/index.ts
+++ b/packages/tokens/index.ts
@@ -1,3 +1,4 @@
 export * from './form'
 export * from './button'
 export * from './breadcrumb'
+export * from './pagination'
diff --git a/packages/tokens/pagination.ts b/packages/tokens/pagination.ts
new file mode 100644
index 0000000000..2fb9f76c02
--- /dev/null
+++ b/packages/tokens/pagination.ts
@@ -0,0 +1,12 @@
+import type { InjectionKey, ComputedRef } from 'vue'
+
+export interface ElPaginationContext {
+  currentPage?: ComputedRef<number>
+  pageCount?: ComputedRef<number>
+  disabled?: ComputedRef<boolean>
+  changeEvent?: (val: number) => void
+  handleSizeChange?: (val: number) => void
+}
+
+export const elPaginationKey: InjectionKey<ElPaginationContext> =
+  Symbol('elPaginationKey')
diff --git a/packages/utils/props.ts b/packages/utils/props.ts
index 7ceb581cc2..fd8df52ab8 100644
--- a/packages/utils/props.ts
+++ b/packages/utils/props.ts
@@ -1,3 +1,4 @@
+import type { Mutable } from './types'
 import type { PropType } from 'vue'
 
 /**
@@ -69,5 +70,7 @@ export function buildProp<
 }
 
 export const keyOf = <T>(arr: T) => Object.keys(arr) as Array<keyof T>
+export const mutable = <T extends readonly any[]>(val: T) =>
+  val as Mutable<typeof val>
 
 export const componentSize = ['large', 'medium', 'small', 'mini'] as const
diff --git a/packages/utils/types.ts b/packages/utils/types.ts
index 66192df7e9..4b684ccc57 100644
--- a/packages/utils/types.ts
+++ b/packages/utils/types.ts
@@ -49,3 +49,5 @@ export type TimeoutHandle = ReturnType<typeof global.setTimeout>
 export type ComponentSize = 'large' | 'medium' | 'small' | 'mini'
 
 export type StyleValue = string | CSSProperties | Array<StyleValue>
+
+export type Mutable<T> = { -readonly [P in keyof T]: T[P] }