树形组件 ​

<script setup>
import { TreeItem, TreeRoot, TreeVirtualizer } from 'reka-ui'
</script>

<template>
  <TreeRoot>
    <TreeItem />

    <!-- 或使用虚拟化 -->
    <TreeVirtualizer>
      <TreeItem />
    </TreeVirtualizer>
  </TreeRoot>
</template>

<script setup lang="ts">
import { TreeRoot } from 'reka-ui'
import { ref } from 'vue'

const people = [
  { id: 1, name: 'Durward Reynolds' },
  { id: 2, name: 'Kenton Towne' },
  { id: 3, name: 'Therese Wunsch' },
  { id: 4, name: 'Benedict Kessler' },
  { id: 5, name: 'Katelyn Rohan' },
]
const selectedPeople = ref([people[0], people[1]])
</script>

<template>
  <TreeRoot
    v-model="selectedPeople"
    multiple
  >
    ...
  </TreeRoot>
</template>

<script setup lang="ts">
import { TreeItem, TreeRoot, TreeVirtualizer } from 'reka-ui'
import { ref } from 'vue'
</script>

<template>
  <TreeRoot :items>
    <TreeVirtualizer
      v-slot="{ item }"
      :text-content="(opt) => opt.name"
    >
      <TreeItem v-bind="item.bind">
        {{ person.name }}
      </TreeItem>
    </TreeVirtualizer>
  </TreeRoot>
</template>

<script setup lang="ts">
import { TreeItem, TreeRoot } from 'reka-ui'
import { ref } from 'vue'
</script>

<template>
  <TreeRoot
    v-slot="{ flattenItems }"
    :items
    multiple
    propagate-select
  >
    <TreeItem
      v-for="item in flattenItems"
      :key="item._id"
      v-bind="item.bind"
      v-slot="{ handleSelect, isSelected, isIndeterminate }"
      @select="(event) => {
        if (event.detail.originalEvent.type === 'click')
          event.preventDefault()
      }"
      @toggle="(event) => {
        if (event.detail.originalEvent.type === 'keydown')
          event.preventDefault()
      }"
    >
      <Icon
        v-if="item.hasChildren"
        icon="radix-icons:chevron-down"
      />

      <button
        tabindex="-1"
        @click.stop
        @change="handleSelect"
      >
        <Icon
          v-if="isSelected"
          icon="radix-icons:check"
        />
        <Icon
          v-else-if="isIndeterminate"
          icon="radix-icons:dash"
        />
        <Icon
          v-else
          icon="radix-icons:box"
        />
      </button>

      <div class="pl-2">
        {{ item.value.title }}
      </div>
    </TreeItem>
  </TreeRoot>
</template>

<script setup lang="ts">
import { TreeItem } from 'reka-ui'

interface TreeNode {
  title: string
  icon: string
  children?: TreeNode[]
}

withDefaults(defineProps<{
  treeItems: TreeNode[]
  level?: number
}>(), { level: 0 })
</script>

<template>
  <li
    v-for=" tree in treeItems"
    :key="tree.title"
  >
    <TreeItem
      v-slot="{ isExpanded }"
      as-child
      :level="level"
      :value="tree"
    >
      <button>…</button>

      <ul v-if="isExpanded && tree.children">
        <Tree
          :tree-items="tree.children"
          :level="level + 1"
        />
      </ul>
    </TreeItem>
  </li>
</template>

<template>
  <TreeRoot
    :items="items"
    :get-key="(item) => item.title"
  >
    <Tree :tree-items="items" />
  </TreeRoot>
</template>

<script setup lang="ts">
import { TreeRoot } from 'reka-ui'
import { ref } from 'vue'

interface FileNode {
  title: string
  icon: string
}

interface DirectoryNode {
  title: string
  icon: string
  directories?: DirectoryNode[]
  files?: FileNode[]
}
</script>

<template>
  <TreeRoot
    :items="items"
    :get-key="(item) => item.title"
    :get-children="(item) => (!item.files) ? item.directories : (!item.directories) ? item.files : [...item.directories, ...item.files]"
  >
    ...
  </TreeRoot>
</template>