ant-design-vue/components/_util/vnode.js
2018-02-24 18:12:24 +08:00

94 lines
2.5 KiB
JavaScript

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