mounting-portal.tsx
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import Vue from 'vue'
import { VNode, VueConstructor, PropOptions } from 'vue'
import Portal from './portal'
import PortalTarget from './portal-target'
import { wormhole } from './wormhole'
import { pick } from '@/utils'
import { PropWithComponent } from '../types'
let _id = 0
export type withPortalTarget = VueConstructor<
Vue & {
portalTarget: any
}
>
const portalProps = [
'disabled',
'name',
'order',
'slim',
'slotProps',
'tag',
'to',
]
const targetProps = ['multiple', 'transition']
export default (Vue as withPortalTarget).extend({
name: 'MountingPortal',
inheritAttrs: false,
props: {
append: { type: [Boolean, String] },
bail: {
type: Boolean,
},
mountTo: { type: String, required: true },
// Portal
disabled: { type: Boolean },
// name for the portal
name: {
type: String,
default: () => 'mounted_' + String(_id++),
},
order: { type: Number, default: 0 },
slim: { type: Boolean },
slotProps: { type: Object, default: () => ({}) },
tag: { type: String, default: 'DIV' },
// name for the target
to: {
type: String,
default: () => String(Math.round(Math.random() * 10000000)),
},
// Target
multiple: { type: Boolean, default: false },
targetSlim: { type: Boolean },
targetSlotProps: { type: Object, default: () => ({}) },
targetTag: { type: String, default: 'div' },
transition: { type: [String, Object, Function] } as PropOptions<
PropWithComponent
>,
},
created() {
if (typeof document === 'undefined') return
let el: HTMLElement | null = document.querySelector(this.mountTo)
if (!el) {
console.error(
`[portal-vue]: Mount Point '${this.mountTo}' not found in document`
)
return
}
const props = this.$props
// Target already exists
if (wormhole.targets[props.name]) {
if (props.bail) {
console.warn(`[portal-vue]: Target ${props.name} is already mounted.
Aborting because 'bail: true' is set`)
} else {
this.portalTarget = wormhole.targets[props.name]
}
return
}
const { append } = props
if (append) {
const type = typeof append === 'string' ? append : 'DIV'
const mountEl = document.createElement(type)
el.appendChild(mountEl)
el = mountEl
}
// get props for target from $props
// we have to rename a few of them
const _props = pick(this.$props, targetProps)
_props.slim = this.targetSlim
_props.tag = this.targetTag
_props.slotProps = this.targetSlotProps
_props.name = this.to
this.portalTarget = new PortalTarget({
el,
parent: this.$parent || this,
propsData: _props,
})
},
beforeDestroy() {
const target = this.portalTarget
if (this.append) {
const el = target.$el
el.parentNode.removeChild(el)
}
target.$destroy()
},
render(h): VNode {
if (!this.portalTarget) {
console.warn("[portal-vue] Target wasn't mounted")
return h()
}
// if there's no "manual" scoped slot, so we create a <Portal> ourselves
if (!this.$scopedSlots.manual) {
const props = pick(this.$props, portalProps)
return h(
Portal,
{
props: props,
attrs: this.$attrs,
on: this.$listeners,
scopedSlots: this.$scopedSlots,
},
this.$slots.default
)
}
// else, we render the scoped slot
let content: VNode = (this.$scopedSlots.manual({
to: this.to,
}) as unknown) as VNode
// if user used <template> for the scoped slot
// content will be an array
if (Array.isArray(content)) {
content = content[0]
}
if (!content) return h()
return content
},
})