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ShapeFlags,
extend,
hyphenate,
isArray,
isObject,
isString,
makeMap,
normalizeClass,
normalizeStyle,
toHandlerKey,
} from '@vue/shared'
import type {
Component,
ComponentInternalInstance,
ComponentOptions,
Data,
InternalRenderFunction,
} from '../component'
import { currentRenderingInstance } from '../componentRenderContext'
import { type DirectiveArguments, withDirectives } from '../directives'
import {
resolveDirective,
resolveDynamicComponent,
} from '../helpers/resolveAssets'
import {
Comment,
type VNode,
type VNodeArrayChildren,
type VNodeProps,
createVNode,
isVNode,
normalizeChildren,
} from '../vnode'
import {
DeprecationTypes,
checkCompatEnabled,
isCompatEnabled,
} from './compatConfig'
import { compatModelEventPrefix } from './componentVModel'
export function convertLegacyRenderFn(
instance: ComponentInternalInstance,
): void {
const Component = instance.type as ComponentOptions
const render = Component.render as InternalRenderFunction | undefined
// v3 runtime compiled, or already checked / wrapped
if (!render || render._rc || render._compatChecked || render._compatWrapped) {
return
}
if (render.length >= 2) {
// v3 pre-compiled function, since v2 render functions never need more than
// 2 arguments, and v2 functional render functions would have already been
// normalized into v3 functional components
render._compatChecked = true
return
}
// v2 render function, try to provide compat
if (checkCompatEnabled(DeprecationTypes.RENDER_FUNCTION, instance)) {
const wrapped = (Component.render = function compatRender() {
// @ts-expect-error
return render.call(this, compatH)
})
// @ts-expect-error
wrapped._compatWrapped = true
}
}
interface LegacyVNodeProps {
key?: string | number
ref?: string
refInFor?: boolean
staticClass?: string
class?: unknown
staticStyle?: Record<string, unknown>
style?: Record<string, unknown>
attrs?: Record<string, unknown>
domProps?: Record<string, unknown>
on?: Record<string, Function | Function[]>
nativeOn?: Record<string, Function | Function[]>
directives?: LegacyVNodeDirective[]
// component only
props?: Record<string, unknown>
slot?: string
scopedSlots?: Record<string, Function>
model?: {
value: any
callback: (v: any) => void
expression: string
}
}
interface LegacyVNodeDirective {
name: string
value: unknown
arg?: string
modifiers?: Record<string, boolean>
}
type LegacyVNodeChildren =
| string
| number
| boolean
| VNode
| VNodeArrayChildren
export function compatH(
type: string | Component,
children?: LegacyVNodeChildren,
): VNode
export function compatH(
type: string | Component,
props?: Data & LegacyVNodeProps,
children?: LegacyVNodeChildren,
): VNode
export function compatH(
type: any,
propsOrChildren?: any,
children?: any,
): VNode {
if (!type) {
type = Comment
}
// to support v2 string component name look!up
if (typeof type === 'string') {
const t = hyphenate(type)
if (t === 'transition' || t === 'transition-group' || t === 'keep-alive') {
// since transition and transition-group are runtime-dom-specific,
// we cannot import them directly here. Instead they are registered using
// special keys in @vue/compat entry.
type = `__compat__${t}`
}
type = resolveDynamicComponent(type)
}
const l = arguments.length
const is2ndArgArrayChildren = isArray(propsOrChildren)
if (l === 2 || is2ndArgArrayChildren) {
if (isObject(propsOrChildren) && !is2ndArgArrayChildren) {
// single vnode without props
if (isVNode(propsOrChildren)) {
return convertLegacySlots(createVNode(type, null, [propsOrChildren]))
}
// props without children
return convertLegacySlots(
convertLegacyDirectives(
createVNode(type, convertLegacyProps(propsOrChildren, type)),
propsOrChildren,
),
)
} else {
// omit props
return convertLegacySlots(createVNode(type, null, propsOrChildren))
}
} else {
if (isVNode(children)) {
children = [children]
}
return convertLegacySlots(
convertLegacyDirectives(
createVNode(type, convertLegacyProps(propsOrChildren, type), children),
propsOrChildren,
),
)
}
}
const skipLegacyRootLevelProps = /*@__PURE__*/ makeMap(
'staticStyle,staticClass,directives,model,hook',
)
function convertLegacyProps(
legacyProps: LegacyVNodeProps | undefined,
type: any,
): (Data & VNodeProps) | null {
if (!legacyProps) {
return null
}
const converted: Data & VNodeProps = {}
for (const key in legacyProps) {
if (key === 'attrs' || key === 'domProps' || key === 'props') {
extend(converted, legacyProps[key])
} else if (key === 'on' || key === 'nativeOn') {
const listeners = legacyProps[key]
for (const event in listeners) {
let handlerKey = convertLegacyEventKey(event)
if (key === 'nativeOn') handlerKey += `Native`
const existing = converted[handlerKey]
const incoming = listeners[event]
if (existing !== incoming) {
if (existing) {
converted[handlerKey] = [].concat(existing as any, incoming as any)
} else {
converted[handlerKey] = incoming
}
}
}
} else if (!skipLegacyRootLevelProps(key)) {
converted[key] = legacyProps[key as keyof LegacyVNodeProps]
}
}
if (legacyProps.staticClass) {
converted.class = normalizeClass([legacyProps.staticClass, converted.class])
}
if (legacyProps.staticStyle) {
converted.style = normalizeStyle([legacyProps.staticStyle, converted.style])
}
if (legacyProps.model && isObject(type)) {
// v2 compiled component v-model
const { prop = 'value', event = 'input' } = (type as any).model || {}
converted[prop] = legacyProps.model.value
converted[compatModelEventPrefix + event] = legacyProps.model.callback
}
return converted
}
function convertLegacyEventKey(event: string): string {
// normalize v2 event prefixes
if (event[0] === '&') {
event = event.slice(1) + 'Passive'
}
if (event[0] === '~') {
event = event.slice(1) + 'Once'
}
if (event[0] === '!') {
event = event.slice(1) + 'Capture'
}
return toHandlerKey(event)
}
function convertLegacyDirectives(
vnode: VNode,
props?: LegacyVNodeProps,
): VNode {
if (props && props.directives) {
return withDirectives(
vnode,
props.directives.map(({ name, value, arg, modifiers }) => {
return [
resolveDirective(name)!,
value,
arg,
modifiers,
] as DirectiveArguments[number]
}),
)
}
return vnode
}
function convertLegacySlots(vnode: VNode): VNode {
const { props, children } = vnode
let slots: Record<string, any> | undefined
if (vnode.shapeFlag & ShapeFlags.COMPONENT && isArray(children)) {
slots = {}
// check "slot" property on vnodes and turn them into v3 function slots
for (let i = 0; i < children.length; i++) {
const child = children[i]
const slotName =
(isVNode(child) && child.props && child.props.slot) || 'default'
const slot = slots[slotName] || (slots[slotName] = [] as any[])
if (isVNode(child) && child.type === 'template') {
slot.push(child.children)
} else {
slot.push(child)
}
}
if (slots) {
for (const key in slots) {
const slotChildren = slots[key]
slots[key] = () => slotChildren
slots[key]._ns = true /* non-scoped slot */
}
}
}
const scopedSlots = props && props.scopedSlots
if (scopedSlots) {
delete props!.scopedSlots
if (slots) {
extend(slots, scopedSlots)
} else {
slots = scopedSlots
}
}
if (slots) {
normalizeChildren(vnode, slots)
}
return vnode
}
export function defineLegacyVNodeProperties(vnode: VNode): void {
/* v8 ignore start */
if (
isCompatEnabled(
DeprecationTypes.RENDER_FUNCTION,
currentRenderingInstance,
true /* enable for built-ins */,
) &&
isCompatEnabled(
DeprecationTypes.PRIVATE_APIS,
currentRenderingInstance,
true /* enable for built-ins */,
)
) {
const context = currentRenderingInstance
const getInstance = () => vnode.component && vnode.component.proxy
let componentOptions: any
Object.defineProperties(vnode, {
tag: { get: () => vnode.type },
data: { get: () => vnode.props || {}, set: p => (vnode.props = p) },
elm: { get: () => vnode.el },
componentInstance: { get: getInstance },
child: { get: getInstance },
text: { get: () => (isString(vnode.children) ? vnode.children : null) },
context: { get: () => context && context.proxy },
componentOptions: {
get: () => {
if (vnode.shapeFlag & ShapeFlags.STATEFUL_COMPONENT) {
if (componentOptions) {
return componentOptions
}
return (componentOptions = {
Ctor: vnode.type,
propsData: vnode.props,
children: vnode.children,
})
}
},
},
})
}
/* v8 ignore stop */
}
|