128 lines
3.2 KiB
JavaScript
128 lines
3.2 KiB
JavaScript
import { filterEmpty, parseStyleText } from './props-util'
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export function cloneVNode (vnode, deep) {
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const componentOptions = vnode.componentOptions
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const data = vnode.data
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let listeners = {}
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if (componentOptions && componentOptions.listeners) {
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listeners = { ...componentOptions.listeners }
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}
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let on = {}
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if (data && data.on) {
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on = { ...data.on }
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}
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const cloned = new vnode.constructor(
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vnode.tag,
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data ? { ...data, on } : data,
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vnode.children,
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vnode.text,
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vnode.elm,
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vnode.context,
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componentOptions ? { ...componentOptions, listeners } : componentOptions,
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vnode.asyncFactory
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)
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cloned.ns = vnode.ns
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cloned.isStatic = vnode.isStatic
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cloned.key = vnode.key
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cloned.isComment = vnode.isComment
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cloned.fnContext = vnode.fnContext
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cloned.fnOptions = vnode.fnOptions
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cloned.fnScopeId = vnode.fnScopeId
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cloned.isCloned = true
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if (deep) {
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if (vnode.children) {
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cloned.children = cloneVNodes(vnode.children, true)
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}
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if (componentOptions && componentOptions.children) {
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componentOptions.children = cloneVNodes(componentOptions.children, true)
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}
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}
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return cloned
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}
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export function cloneVNodes (vnodes, deep) {
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const len = vnodes.length
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const res = new Array(len)
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for (let i = 0; i < len; i++) {
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res[i] = cloneVNode(vnodes[i], deep)
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}
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return res
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}
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export function cloneElement (n, nodeProps, deep) {
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let ele = n
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if (Array.isArray(n)) {
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ele = filterEmpty(n)[0]
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}
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if (!ele) {
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return null
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}
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const node = cloneVNode(ele, deep)
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const { props = {}, key, on = {}, children } = nodeProps
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const data = node.data || {}
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let cls = {}
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let style = {}
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const {
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attrs = {},
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ref,
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domProps = {},
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style: tempStyle = {},
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class: tempCls = {},
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scopedSlots = {},
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} = nodeProps
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if (typeof data.style === 'string') {
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style = parseStyleText(data.style)
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} else {
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style = { ...data.style, ...style }
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}
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if (typeof tempStyle === 'string') {
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style = { ...style, ...parseStyleText(style) }
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} else {
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style = { ...style, ...tempStyle }
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}
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if (typeof data.class === 'string') {
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cls[data.class] = true
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data.class.split(' ').forEach(c => { cls[c.trim()] = true })
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} else {
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cls = { ...data.class, ...cls }
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}
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if (typeof tempCls === 'string') {
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tempCls.split(' ').forEach(c => { cls[c.trim()] = true })
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} else {
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cls = { ...cls, ...tempCls }
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}
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node.data = Object.assign({}, data, {
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style,
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attrs: { ...data.attrs, ...attrs },
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class: cls,
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domProps: { ...data.domProps, ...domProps },
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scopedSlots: { ...data.scopedSlots, ...scopedSlots },
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})
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if (node.componentOptions) {
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node.componentOptions.propsData = node.componentOptions.propsData || {}
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node.componentOptions.listeners = node.componentOptions.listeners || {}
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node.componentOptions.propsData = { ...node.componentOptions.propsData, ...props }
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node.componentOptions.listeners = { ...node.componentOptions.listeners, ...on }
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if (children) {
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node.componentOptions.children = children
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}
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} else {
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node.data.on = { ...(node.data.on || {}), ...on }
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}
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if (key !== undefined) {
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node.key = key
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node.data.key = key
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}
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if (typeof ref === 'string') {
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node.data.ref = ref
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}
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return node
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}
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