ant-design-vue/components/tree/demo/accordion.vue

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<docs>
---
order: 0
title:
zh-CN: 手风琴模式
en-US: Accordion
---
## zh-CN
同一级的节点每次只能展开一个
## en-US
Nodes of the same level can only be expanded one
</docs>
<template>
<a-tree
v-model:selectedKeys="selectedKeys"
:expanded-keys="expandedKeys"
:tree-data="treeData"
@expand="handleExpand"
>
<template #title="{ title, key }">
<span v-if="key === '0-0-1-0'" style="color: #1890ff">{{ title }}</span>
<template v-else>{{ title }}</template>
</template>
</a-tree>
</template>
<script lang="ts" setup>
import { ref, watch } from 'vue';
import type { TreeProps } from 'ant-design-vue';
import difference from 'lodash-es/difference';
const treeData: TreeProps['treeData'] = [
{
title: 'parent 1',
key: '0-0',
children: [
{
title: 'parent 1-0',
key: '0-0-0',
children: [
{ title: 'leaf', key: '0-0-0-0' },
{ title: 'leaf', key: '0-0-0-1' },
],
},
{
title: 'parent 1-1',
key: '0-0-1',
children: [{ key: '0-0-1-0', title: 'sss' }],
},
],
},
{
title: 'parent 2',
key: '1-0',
children: [
{
title: 'parent 2-0',
key: '1-0-0',
},
{
title: 'parent 2-1',
key: '2-0-1',
},
],
},
];
const expandedKeys = ref<string[]>([]);
const selectedKeys = ref<string[]>(['0-0-0', '0-0-1']);
const checkedKeys = ref<string[]>(['0-0-0', '0-0-1']);
watch(expandedKeys, () => {
console.log('expandedKeys', expandedKeys);
});
watch(selectedKeys, () => {
console.log('selectedKeys', selectedKeys);
});
watch(checkedKeys, () => {
console.log('checkedKeys', checkedKeys);
});
const handleExpand = (keys: string[], { expanded, node }) => {
// node.parent add from 3.0.0-alpha.10
const tempKeys = ((node.parent ? node.parent.children : treeData) || []).map(({ key }) => key);
if (expanded) {
expandedKeys.value = difference(keys, tempKeys).concat(node.key);
} else {
expandedKeys.value = keys;
}
};
</script>