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68 lines
1.4 KiB
Vue
68 lines
1.4 KiB
Vue
<template>
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<el-tree-v2
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:data="data"
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:height="208"
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:props="props"
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show-checkbox
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:default-checked-keys="defaultCheckedKeys"
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:default-expanded-keys="defaultExpandedKeys"
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/>
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</template>
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<script lang="ts" setup>
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import { ref } from 'vue'
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interface Tree {
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id: string
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label: string
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children?: Tree[]
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}
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const getKey = (prefix: string, id: number) => {
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return `${prefix}-${id}`
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}
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const createData = (
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maxDeep: number,
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maxChildren: number,
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minNodesNumber: number,
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deep = 1,
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key = 'node'
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): Tree[] => {
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let id = 0
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return Array.from({ length: minNodesNumber })
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.fill(deep)
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.map(() => {
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const childrenNumber =
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deep === maxDeep ? 0 : Math.round(Math.random() * maxChildren)
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const nodeKey = getKey(key, ++id)
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return {
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id: nodeKey,
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label: nodeKey,
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children: childrenNumber
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? createData(maxDeep, maxChildren, childrenNumber, deep + 1, nodeKey)
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: undefined,
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}
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})
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}
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const props = {
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value: 'id',
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label: 'label',
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children: 'children',
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}
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const data = createData(4, 30, 40)
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const checkedKeys: string[] = []
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const expanedKeys: string[] = []
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for (const datum of data) {
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const children = datum.children
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if (children) {
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expanedKeys.push(datum.id)
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checkedKeys.push(children[0].id)
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break
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}
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}
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const defaultCheckedKeys = ref(checkedKeys)
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const defaultExpandedKeys = ref(expanedKeys)
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</script>
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