refactor(components): refactor loading (#4750)

packages/components/loading/__tests__/loading.spec.ts

@@ -1,9 +1,9 @@
 import { nextTick } from 'vue'
 import { mount } from '@vue/test-utils'
 import { sleep } from '@element-plus/test-utils'
-import Loading from '../src/index'
+import { Loading } from '../src/service'
+import { vLoading } from '../src/directive'
 import ElInput from '../../input'
-import vLoading from '../src/directive'
 
 function destroyLoadingInstance(loadingInstance) {
   if (!loadingInstance) return

packages/components/loading/index.ts

@@ -1,10 +1,10 @@
-import Loading from './src'
-import vLoading from './src/directive'
+import { Loading } from './src/service'
+import { vLoading } from './src/directive'
 
 import type { App } from 'vue'
 
 // installer and everything in all
-const ElLoading = {
+export const ElLoading = {
   install(app: App) {
     app.directive('loading', vLoading)
     app.config.globalProperties.$loading = Loading
@@ -15,9 +15,7 @@ const ElLoading = {
 
 export default ElLoading
 
-export { ElLoading }
-
 export const ElLoadingDirective = vLoading
 export const ElLoadingService = Loading
 
-export * from './src/loading.type'
+export * from './src/types'

packages/components/loading/src/createLoadingComponent.ts

@@ -1,167 +0,0 @@
-import {
-  createVNode,
-  h,
-  reactive,
-  ref,
-  render,
-  toRefs,
-  Transition,
-  vShow,
-  withCtx,
-  withDirectives,
-} from 'vue'
-import { removeClass } from '@element-plus/utils/dom'
-
-import type { VNode } from 'vue'
-import type { Nullable } from '@element-plus/utils/types'
-import type {
-  ILoadingCreateComponentParams,
-  ILoadingInstance,
-} from './loading.type'
-
-export function createLoadingComponent({
-  options,
-  globalLoadingOption,
-}: ILoadingCreateComponentParams): ILoadingInstance {
-  let vm: VNode = null
-  let afterLeaveTimer: Nullable<number> = null
-
-  const afterLeaveFlag = ref(false)
-  const data = reactive({
-    ...options,
-    originalPosition: '',
-    originalOverflow: '',
-    visible: false,
-  })
-
-  function setText(text: string) {
-    data.text = text
-  }
-
-  function destroySelf() {
-    const target = data.parent
-    if (!target.vLoadingAddClassList) {
-      let loadingNumber: number | string = target.getAttribute('loading-number')
-      loadingNumber = Number.parseInt(loadingNumber) - 1
-      if (!loadingNumber) {
-        removeClass(target, 'el-loading-parent--relative')
-        target.removeAttribute('loading-number')
-      } else {
-        target.setAttribute('loading-number', loadingNumber.toString())
-      }
-      removeClass(target, 'el-loading-parent--hidden')
-    }
-    if (vm.el && vm.el.parentNode) {
-      vm.el.parentNode.removeChild(vm.el)
-    }
-  }
-
-  function close() {
-    const target = data.parent
-    target.vLoadingAddClassList = null
-    if (data.fullscreen) {
-      globalLoadingOption.fullscreenLoading = undefined
-    }
-    afterLeaveFlag.value = true
-    clearTimeout(afterLeaveTimer)
-
-    afterLeaveTimer = window.setTimeout(() => {
-      if (afterLeaveFlag.value) {
-        afterLeaveFlag.value = false
-        destroySelf()
-      }
-    }, 400)
-    data.visible = false
-  }
-
-  function handleAfterLeave() {
-    if (!afterLeaveFlag.value) return
-    afterLeaveFlag.value = false
-    destroySelf()
-  }
-
-  const componentSetupConfig = {
-    ...toRefs(data),
-    setText,
-    close,
-    handleAfterLeave,
-  }
-
-  const elLoadingComponent = {
-    name: 'ElLoading',
-    setup() {
-      return componentSetupConfig
-    },
-    render() {
-      const svg = this.spinner || this.svg
-      const spinner = h(
-        'svg',
-        {
-          class: 'circular',
-          viewBox: this.svgViewBox ? this.svgViewBox : '25 25 50 50',
-          ...(svg ? { innerHTML: svg } : {}),
-        },
-        [
-          h('circle', {
-            class: 'path',
-            cx: '50',
-            cy: '50',
-            r: '20',
-            fill: 'none',
-          }),
-        ]
-      )
-
-      const spinnerText = h('p', { class: 'el-loading-text' }, [this.text])
-
-      return h(
-        Transition,
-        {
-          name: 'el-loading-fade',
-          onAfterLeave: this.handleAfterLeave,
-        },
-        {
-          default: withCtx(() => [
-            withDirectives(
-              createVNode(
-                'div',
-                {
-                  style: {
-                    backgroundColor: this.background || '',
-                  },
-                  class: [
-                    'el-loading-mask',
-                    this.customClass,
-                    this.fullscreen ? 'is-fullscreen' : '',
-                  ],
-                },
-                [
-                  h(
-                    'div',
-                    {
-                      class: 'el-loading-spinner',
-                    },
-                    [spinner, this.text ? spinnerText : null]
-                  ),
-                ]
-              ),
-              [[vShow, this.visible]]
-            ),
-          ]),
-        }
-      )
-    },
-  }
-
-  vm = createVNode(elLoadingComponent)
-
-  render(vm, document.createElement('div'))
-
-  return {
-    ...componentSetupConfig,
-    vm,
-    get $el() {
-      return vm.el as HTMLElement
-    },
-  }
-}

packages/components/loading/src/directive.ts

@@ -1,56 +1,94 @@
-import Loading from './index'
+import { isRef, ref } from 'vue'
+import { isObject, isString, hyphenate } from '@vue/shared'
+import { Loading } from './service'
+import type { Directive, DirectiveBinding, UnwrapRef } from 'vue'
+import type { LoadingOptions } from './types'
+import type { LoadingInstance } from './loading'
 
-import type { DirectiveBinding } from 'vue'
-import type { ILoadingInstance } from './loading.type'
-
-const INSTANCE_NAME = 'ElLoading'
+const INSTANCE_KEY = Symbol('ElLoading')
 
+export type LoadingBinding = boolean | UnwrapRef<LoadingOptions>
 export interface ElementLoading extends HTMLElement {
-  [INSTANCE_NAME]?: ILoadingInstance
+  [INSTANCE_KEY]?: {
+    instance: LoadingInstance
+    options: LoadingOptions
+  }
 }
 
-const createInstance = (el: ElementLoading, binding: DirectiveBinding) => {
-  const textExr = el.getAttribute('element-loading-text')
-  const spinnerExr = el.getAttribute('element-loading-spinner')
-  const svgExr = el.getAttribute('element-loading-svg')
-  const svgViewBoxExr = el.getAttribute('element-loading-svg-view-box')
-  const backgroundExr = el.getAttribute('element-loading-background')
-  const customClassExr = el.getAttribute('element-loading-custom-class')
+const createInstance = (
+  el: ElementLoading,
+  binding: DirectiveBinding<LoadingBinding>
+) => {
   const vm = binding.instance
-  el[INSTANCE_NAME] = Loading({
-    text: (vm && vm[textExr]) || textExr,
-    svg: (vm && vm[svgExr]) || svgExr,
-    svgViewBox: (vm && vm[svgViewBoxExr]) || svgViewBoxExr,
-    spinner: (vm && vm[spinnerExr]) || spinnerExr,
-    background: (vm && vm[backgroundExr]) || backgroundExr,
-    customClass: (vm && vm[customClassExr]) || customClassExr,
-    fullscreen: !!binding.modifiers.fullscreen,
-    target: binding.modifiers.fullscreen ? null : el,
-    body: !!binding.modifiers.body,
-    visible: true,
-    lock: !!binding.modifiers.lock,
-  })
+
+  const getBindingProp = <K extends keyof LoadingOptions>(
+    key: K
+  ): LoadingOptions[K] =>
+    isObject(binding.value) ? binding.value[key] : undefined
+
+  const resolveExpression = (key: any) => {
+    const data = (isString(key) && vm?.[key]) || key
+    if (data) return ref(data)
+    else return data
+  }
+
+  const getProp = <K extends keyof LoadingOptions>(name: K) =>
+    resolveExpression(
+      getBindingProp(name) ||
+        el.getAttribute(`element-loading-${hyphenate(name)}`)
+    )
+
+  const fullscreen =
+    getBindingProp('fullscreen') ?? binding.modifiers.fullscreen
+
+  const options: LoadingOptions = {
+    text: getProp('text'),
+    svg: getProp('svg'),
+    svgViewBox: getProp('svgViewBox'),
+    spinner: getProp('spinner'),
+    background: getProp('background'),
+    customClass: getProp('customClass'),
+    fullscreen,
+    target: getBindingProp('target') ?? (fullscreen ? undefined : el),
+    body: getBindingProp('body') ?? binding.modifiers.body,
+    lock: getBindingProp('lock') ?? binding.modifiers.lock,
+  }
+  el[INSTANCE_KEY] = {
+    options,
+    instance: Loading(options),
+  }
 }
 
-const vLoading = {
-  mounted(el: ElementLoading, binding: DirectiveBinding) {
+const updateOptions = (
+  newOptions: UnwrapRef<LoadingOptions>,
+  originalOptions: LoadingOptions
+) => {
+  for (const key of Object.keys(originalOptions)) {
+    if (isRef(originalOptions[key]))
+      originalOptions[key].value = newOptions[key]
+  }
+}
+
+export const vLoading: Directive<ElementLoading, LoadingBinding> = {
+  mounted(el, binding) {
     if (binding.value) {
       createInstance(el, binding)
     }
   },
-  updated(el: ElementLoading, binding: DirectiveBinding) {
-    const instance = el[INSTANCE_NAME]
+  updated(el, binding) {
+    const instance = el[INSTANCE_KEY]
     if (binding.oldValue !== binding.value) {
-      if (binding.value) {
+      if (binding.value && !binding.oldValue) {
         createInstance(el, binding)
+      } else if (binding.value && binding.oldValue) {
+        if (isObject(binding.value))
+          updateOptions(binding.value, instance!.options)
       } else {
-        instance?.close()
+        instance?.instance.close()
       }
     }
   },
-  unmounted(el: ElementLoading) {
-    el[INSTANCE_NAME]?.close()
+  unmounted(el) {
+    el[INSTANCE_KEY]?.instance.close()
   },
 }
-
-export default vLoading

packages/components/loading/src/index.ts

@@ -1,158 +0,0 @@
-import { nextTick } from 'vue'
-import { hasOwn } from '@vue/shared'
-import { addClass, getStyle, removeClass } from '@element-plus/utils/dom'
-import PopupManager from '@element-plus/utils/popup-manager'
-import isServer from '@element-plus/utils/isServer'
-import { createLoadingComponent } from './createLoadingComponent'
-
-import type { CSSProperties } from 'vue'
-
-import type {
-  ILoadingGlobalConfig,
-  ILoadingInstance,
-  ILoadingOptions,
-} from './loading.type'
-
-const defaults: ILoadingOptions = {
-  parent: null,
-  background: '',
-  svg: null,
-  svgViewBox: null,
-  spinner: false,
-  text: null,
-  fullscreen: true,
-  body: false,
-  lock: false,
-  customClass: '',
-}
-
-const globalLoadingOption: ILoadingGlobalConfig = {
-  fullscreenLoading: null,
-}
-
-const addStyle = async (
-  options: ILoadingOptions,
-  parent: HTMLElement,
-  instance: ILoadingInstance
-) => {
-  const maskStyle: Partial<CSSProperties> = {}
-  if (options.fullscreen) {
-    instance.originalPosition.value = getStyle(document.body, 'position')
-    instance.originalOverflow.value = getStyle(document.body, 'overflow')
-    maskStyle.zIndex = PopupManager.nextZIndex()
-  } else if (options.body) {
-    instance.originalPosition.value = getStyle(document.body, 'position')
-    /**
-     * await dom render when visible is true in init,
-     * because some component's height maybe 0.
-     * e.g. el-table.
-     */
-    await nextTick()
-    ;['top', 'left'].forEach((property) => {
-      const scroll = property === 'top' ? 'scrollTop' : 'scrollLeft'
-      maskStyle[property] = `${
-        (options.target as HTMLElement).getBoundingClientRect()[property] +
-        document.body[scroll] +
-        document.documentElement[scroll] -
-        parseInt(getStyle(document.body, `margin-${property}`), 10)
-      }px`
-    })
-    ;['height', 'width'].forEach((property) => {
-      maskStyle[property] = `${
-        (options.target as HTMLElement).getBoundingClientRect()[property]
-      }px`
-    })
-  } else {
-    instance.originalPosition.value = getStyle(parent, 'position')
-  }
-  Object.keys(maskStyle).forEach((property) => {
-    instance.$el.style[property] = maskStyle[property]
-  })
-}
-
-const addClassList = (
-  options: ILoadingOptions,
-  parent: HTMLElement,
-  instance: ILoadingInstance
-) => {
-  if (
-    instance.originalPosition.value !== 'absolute' &&
-    instance.originalPosition.value !== 'fixed'
-  ) {
-    addClass(parent, 'el-loading-parent--relative')
-  } else {
-    removeClass(parent, 'el-loading-parent--relative')
-  }
-  if (options.fullscreen && options.lock) {
-    addClass(parent, 'el-loading-parent--hidden')
-  } else {
-    removeClass(parent, 'el-loading-parent--hidden')
-  }
-}
-
-const Loading = function (options: ILoadingOptions = {}): ILoadingInstance {
-  if (isServer) return
-  options = {
-    ...defaults,
-    ...options,
-  }
-
-  if (typeof options.target === 'string') {
-    options.target = document.querySelector(options.target) as HTMLElement
-  }
-  options.target = options.target || document.body
-  if (options.target !== document.body) {
-    options.fullscreen = false
-  } else {
-    options.body = true
-  }
-
-  if (options.fullscreen && globalLoadingOption.fullscreenLoading) {
-    globalLoadingOption.fullscreenLoading.close()
-  }
-
-  const parent = options.body ? document.body : options.target
-  options.parent = parent
-
-  const instance = createLoadingComponent({
-    options,
-    globalLoadingOption,
-  })
-
-  addStyle(options, parent, instance)
-  addClassList(options, parent, instance)
-
-  options.parent.vLoadingAddClassList = () => {
-    addClassList(options, parent, instance)
-  }
-
-  /**
-   * add loading-number to parent.
-   * because if a fullscreen loading is triggered when somewhere
-   * a v-loading.body was triggered before and it's parent is
-   * document.body which with a margin , the fullscreen loading's
-   * destroySelf function will remove 'el-loading-parent--relative',
-   * and then the position of v-loading.body will be error.
-   */
-  let loadingNumber: number | string = parent.getAttribute('loading-number')
-  if (!loadingNumber) {
-    loadingNumber = 1
-  } else {
-    loadingNumber = Number.parseInt(loadingNumber) + 1
-  }
-  parent.setAttribute('loading-number', loadingNumber.toString())
-
-  parent.appendChild(instance.$el)
-
-  // after instance render, then modify visible to trigger transition
-  nextTick().then(() => {
-    instance.visible.value = hasOwn(options, 'visible') ? options.visible : true
-  })
-
-  if (options.fullscreen) {
-    globalLoadingOption.fullscreenLoading = instance
-  }
-  return instance
-}
-
-export default Loading

packages/components/loading/src/loading.ts

@@ -0,0 +1,155 @@
+import {
+  createApp,
+  h,
+  reactive,
+  ref,
+  createVNode,
+  toRefs,
+  Transition,
+  vShow,
+  withCtx,
+  withDirectives,
+} from 'vue'
+import { removeClass } from '@element-plus/utils/dom'
+
+import type { LoadingOptionsResolved } from './types'
+
+export function createLoadingComponent(options: LoadingOptionsResolved) {
+  let afterLeaveTimer: number
+
+  const afterLeaveFlag = ref(false)
+  const data = reactive({
+    ...options,
+    originalPosition: '',
+    originalOverflow: '',
+    visible: false,
+  })
+
+  function setText(text: string) {
+    data.text = text
+  }
+
+  function destroySelf() {
+    const target = data.parent
+    if (!target.vLoadingAddClassList) {
+      let loadingNumber: number | string | null =
+        target.getAttribute('loading-number')
+      loadingNumber = Number.parseInt(loadingNumber as any) - 1
+      if (!loadingNumber) {
+        removeClass(target, 'el-loading-parent--relative')
+        target.removeAttribute('loading-number')
+      } else {
+        target.setAttribute('loading-number', loadingNumber.toString())
+      }
+      removeClass(target, 'el-loading-parent--hidden')
+    }
+    vm.$el?.parentNode?.removeChild(vm.$el)
+  }
+
+  function close() {
+    if (options.beforeClose && !options.beforeClose()) return
+
+    const target = data.parent
+    target.vLoadingAddClassList = undefined
+    afterLeaveFlag.value = true
+    clearTimeout(afterLeaveTimer)
+
+    afterLeaveTimer = window.setTimeout(() => {
+      if (afterLeaveFlag.value) {
+        afterLeaveFlag.value = false
+        destroySelf()
+      }
+    }, 400)
+    data.visible = false
+
+    options.closed?.()
+  }
+
+  function handleAfterLeave() {
+    if (!afterLeaveFlag.value) return
+    afterLeaveFlag.value = false
+    destroySelf()
+  }
+
+  const elLoadingComponent = {
+    name: 'ElLoading',
+    setup() {
+      return () => {
+        const svg = data.spinner || data.svg
+        const spinner = h(
+          'svg',
+          {
+            class: 'circular',
+            viewBox: data.svgViewBox ? data.svgViewBox : '25 25 50 50',
+            ...(svg ? { innerHTML: svg } : {}),
+          },
+          [
+            h('circle', {
+              class: 'path',
+              cx: '50',
+              cy: '50',
+              r: '20',
+              fill: 'none',
+            }),
+          ]
+        )
+
+        const spinnerText = data.text
+          ? h('p', { class: 'el-loading-text' }, [data.text])
+          : undefined
+
+        return h(
+          Transition,
+          {
+            name: 'el-loading-fade',
+            onAfterLeave: handleAfterLeave,
+          },
+          {
+            default: withCtx(() => [
+              withDirectives(
+                createVNode(
+                  'div',
+                  {
+                    style: {
+                      backgroundColor: data.background || '',
+                    },
+                    class: [
+                      'el-loading-mask',
+                      data.customClass,
+                      data.fullscreen ? 'is-fullscreen' : '',
+                    ],
+                  },
+                  [
+                    h(
+                      'div',
+                      {
+                        class: 'el-loading-spinner',
+                      },
+                      [spinner, spinnerText]
+                    ),
+                  ]
+                ),
+                [[vShow, data.visible]]
+              ),
+            ]),
+          }
+        )
+      }
+    },
+  }
+
+  const vm = createApp(elLoadingComponent).mount(document.createElement('div'))
+
+  return {
+    ...toRefs(data),
+    setText,
+    close,
+    handleAfterLeave,
+    vm,
+    get $el(): HTMLElement {
+      return vm.$el
+    },
+  }
+}
+
+export type LoadingInstance = ReturnType<typeof createLoadingComponent>

packages/components/loading/src/loading.type.ts

@@ -1,49 +0,0 @@
-import type { Ref, VNode } from 'vue'
-
-export type ILoadingOptions = {
-  parent?: ILoadingParentElement
-  background?: string
-  svg?: string
-  svgViewBox?: string
-  spinner?: boolean | string
-  text?: string
-  fullscreen?: boolean
-  body?: boolean
-  lock?: boolean
-  customClass?: string
-  visible?: boolean
-  target?: string | HTMLElement
-}
-
-export type ILoadingInstance = {
-  parent?: Ref<ILoadingParentElement>
-  background?: Ref<string>
-  spinner?: Ref<boolean | string>
-  text?: Ref<string>
-  fullscreen?: Ref<boolean>
-  body?: Ref<boolean>
-  lock?: Ref<boolean>
-  customClass?: Ref<string>
-  visible?: Ref<boolean>
-  target?: Ref<string | HTMLElement>
-  originalPosition?: Ref<string>
-  originalOverflow?: Ref<string>
-  setText: (text: string) => void
-  close: () => void
-  handleAfterLeave: () => void
-  vm: VNode
-  $el: HTMLElement
-}
-
-export type ILoadingGlobalConfig = {
-  fullscreenLoading: ILoadingInstance
-}
-
-export type ILoadingCreateComponentParams = {
-  options: ILoadingOptions
-  globalLoadingOption: ILoadingGlobalConfig
-}
-
-export interface ILoadingParentElement extends HTMLElement {
-  vLoadingAddClassList?: () => void
-}

packages/components/loading/src/service.ts

@@ -0,0 +1,148 @@
+import { nextTick } from 'vue'
+import { isString } from '@vue/shared'
+import { isClient } from '@vueuse/core'
+import { addClass, getStyle, removeClass } from '@element-plus/utils/dom'
+import PopupManager from '@element-plus/utils/popup-manager'
+import { createLoadingComponent } from './loading'
+import type { LoadingInstance } from './loading'
+import type { LoadingOptionsResolved } from '..'
+import type { LoadingOptions } from './types'
+import type { CSSProperties } from 'vue'
+
+let fullscreenInstance: LoadingInstance | undefined = undefined
+
+export const Loading = function (
+  options: LoadingOptions = {}
+): LoadingInstance {
+  if (!isClient) return undefined as any
+
+  const resolved = resolveOptions(options)
+
+  if (resolved.fullscreen && fullscreenInstance) {
+    fullscreenInstance.close()
+  }
+
+  const instance = createLoadingComponent({
+    ...resolved,
+    closed: () => {
+      resolved.closed?.()
+      if (resolved.fullscreen) fullscreenInstance = undefined
+    },
+  })
+
+  addStyle(resolved, resolved.parent, instance)
+  addClassList(resolved, resolved.parent, instance)
+
+  resolved.parent.vLoadingAddClassList = () =>
+    addClassList(resolved, resolved.parent, instance)
+
+  /**
+   * add loading-number to parent.
+   * because if a fullscreen loading is triggered when somewhere
+   * a v-loading.body was triggered before and it's parent is
+   * document.body which with a margin , the fullscreen loading's
+   * destroySelf function will remove 'el-loading-parent--relative',
+   * and then the position of v-loading.body will be error.
+   */
+  let loadingNumber: string | null =
+    resolved.parent.getAttribute('loading-number')
+  if (!loadingNumber) {
+    loadingNumber = '1'
+  } else {
+    loadingNumber = `${Number.parseInt(loadingNumber) + 1}`
+  }
+  resolved.parent.setAttribute('loading-number', loadingNumber)
+
+  resolved.parent.appendChild(instance.$el)
+
+  // after instance render, then modify visible to trigger transition
+  nextTick(() => (instance.visible.value = resolved.visible))
+
+  if (resolved.fullscreen) {
+    fullscreenInstance = instance
+  }
+  return instance
+}
+
+const resolveOptions = (options: LoadingOptions): LoadingOptionsResolved => {
+  let target: HTMLElement
+  if (isString(options.target)) {
+    target =
+      document.querySelector<HTMLElement>(options.target) ?? document.body
+  } else {
+    target = options.target || document.body
+  }
+  return {
+    parent: target === document.body || options.body ? document.body : target,
+    background: options.background || '',
+    svg: options.svg || '',
+    svgViewBox: options.svgViewBox || '',
+    spinner: options.spinner || false,
+    text: options.text || '',
+    fullscreen: target === document.body && (options.fullscreen ?? true),
+    lock: options.lock ?? false,
+    customClass: options.customClass || '',
+    visible: options.visible ?? true,
+    target,
+  }
+}
+
+const addStyle = async (
+  options: LoadingOptionsResolved,
+  parent: HTMLElement,
+  instance: LoadingInstance
+) => {
+  const maskStyle: CSSProperties = {}
+  if (options.fullscreen) {
+    instance.originalPosition.value = getStyle(document.body, 'position')
+    instance.originalOverflow.value = getStyle(document.body, 'overflow')
+    maskStyle.zIndex = PopupManager.nextZIndex()
+  } else if (options.parent === document.body) {
+    instance.originalPosition.value = getStyle(document.body, 'position')
+    /**
+     * await dom render when visible is true in init,
+     * because some component's height maybe 0.
+     * e.g. el-table.
+     */
+    await nextTick()
+    for (const property of ['top', 'left']) {
+      const scroll = property === 'top' ? 'scrollTop' : 'scrollLeft'
+      maskStyle[property] = `${
+        (options.target as HTMLElement).getBoundingClientRect()[property] +
+        document.body[scroll] +
+        document.documentElement[scroll] -
+        parseInt(getStyle(document.body, `margin-${property}`), 10)
+      }px`
+    }
+    for (const property of ['height', 'width']) {
+      maskStyle[property] = `${
+        (options.target as HTMLElement).getBoundingClientRect()[property]
+      }px`
+    }
+  } else {
+    instance.originalPosition.value = getStyle(parent, 'position')
+  }
+  for (const [key, value] of Object.entries(maskStyle)) {
+    instance.$el.style[key] = value
+  }
+}
+
+const addClassList = (
+  options: LoadingOptions,
+  parent: HTMLElement,
+  instance: LoadingInstance
+) => {
+  if (
+    instance.originalPosition.value !== 'absolute' &&
+    instance.originalPosition.value !== 'fixed'
+  ) {
+    addClass(parent, 'el-loading-parent--relative')
+  } else {
+    removeClass(parent, 'el-loading-parent--relative')
+  }
+  if (options.fullscreen && options.lock) {
+    addClass(parent, 'el-loading-parent--hidden')
+  } else {
+    removeClass(parent, 'el-loading-parent--hidden')
+  }
+}

packages/components/loading/src/types.ts

@@ -0,0 +1,27 @@
+import type { MaybeRef } from '@vueuse/core'
+
+export type LoadingOptionsResolved = {
+  parent: LoadingParentElement
+  background: MaybeRef<string>
+  svg: MaybeRef<string>
+  svgViewBox: MaybeRef<string>
+  spinner: MaybeRef<boolean | string>
+  text: MaybeRef<string>
+  fullscreen: boolean
+  lock: boolean
+  customClass: MaybeRef<string>
+  visible: boolean
+  target: HTMLElement
+  beforeClose?: () => boolean
+  closed?: () => void
+}
+export type LoadingOptions = Partial<
+  Omit<LoadingOptionsResolved, 'parent' | 'target'> & {
+    target: HTMLElement | string
+    body: boolean
+  }
+>
+
+export interface LoadingParentElement extends HTMLElement {
+  vLoadingAddClassList?: () => void
+}