Usage
Items
Use the items prop as an array of objects with the following properties:
- icon?: string
- label?: string
- trailingIcon?: string
- defaultExpanded?: boolean
- disabled?: boolean
- value?: string
- slot?: string
- children?: TreeItem[]
- onToggle?(e: Event): void
- onSelect?(e?: Event): void
- class?: any
- ui?: { item?: ClassNameValue, itemWithChildren?: ClassNameValue, link?: ClassNameValue, linkLeadingIcon?: ClassNameValue, linkLabel?: ClassNameValue, linkTrailing?: ClassNameValue, linkTrailingIcon?: ClassNameValue, listWithChildren?: ClassNameValue }
value prop as identifier, falling back to label if value is not provided. One of these must be provided for the component to work properly.<script setup lang="ts">
const items = ref([
  {
    label: 'app/',
    defaultExpanded: true,
    children: [
      {
        label: 'composables/',
        children: [
          {
            label: 'useAuth.ts',
            icon: 'i-vscode-icons-file-type-typescript'
          },
          {
            label: 'useUser.ts',
            icon: 'i-vscode-icons-file-type-typescript'
          }
        ]
      },
      {
        label: 'components/',
        defaultExpanded: true,
        children: [
          {
            label: 'Card.vue',
            icon: 'i-vscode-icons-file-type-vue'
          },
          {
            label: 'Button.vue',
            icon: 'i-vscode-icons-file-type-vue'
          }
        ]
      }
    ]
  },
  {
    label: 'app.vue',
    icon: 'i-vscode-icons-file-type-vue'
  },
  {
    label: 'nuxt.config.ts',
    icon: 'i-vscode-icons-file-type-nuxt'
  }
])
</script>
<template>
  <UTree :items="items" />
</template>
Multiple
Use the multiple prop to allow multiple item selections.
<script setup lang="ts">
const items = ref([
  {
    label: 'app/',
    defaultExpanded: true,
    children: [
      {
        label: 'composables/',
        children: [
          {
            label: 'useAuth.ts',
            icon: 'i-vscode-icons-file-type-typescript'
          },
          {
            label: 'useUser.ts',
            icon: 'i-vscode-icons-file-type-typescript'
          }
        ]
      },
      {
        label: 'components/',
        defaultExpanded: true,
        children: [
          {
            label: 'Card.vue',
            icon: 'i-vscode-icons-file-type-vue'
          },
          {
            label: 'Button.vue',
            icon: 'i-vscode-icons-file-type-vue'
          }
        ]
      }
    ]
  },
  {
    label: 'app.vue',
    icon: 'i-vscode-icons-file-type-vue'
  },
  {
    label: 'nuxt.config.ts',
    icon: 'i-vscode-icons-file-type-nuxt'
  }
])
</script>
<template>
  <UTree multiple :items="items" />
</template>
Color
Use the color prop to change the color of the Tree.
<script setup lang="ts">
const items = ref([
  {
    label: 'app/',
    defaultExpanded: true,
    children: [
      {
        label: 'composables/',
        children: [
          {
            label: 'useAuth.ts',
            icon: 'i-vscode-icons-file-type-typescript'
          },
          {
            label: 'useUser.ts',
            icon: 'i-vscode-icons-file-type-typescript'
          }
        ]
      },
      {
        label: 'components/',
        defaultExpanded: true,
        children: [
          {
            label: 'Card.vue',
            icon: 'i-vscode-icons-file-type-vue'
          },
          {
            label: 'Button.vue',
            icon: 'i-vscode-icons-file-type-vue'
          }
        ]
      }
    ]
  },
  {
    label: 'app.vue',
    icon: 'i-vscode-icons-file-type-vue'
  },
  {
    label: 'nuxt.config.ts',
    icon: 'i-vscode-icons-file-type-nuxt'
  }
])
</script>
<template>
  <UTree color="neutral" :items="items" />
</template>
Size
Use the size prop to change the size of the Tree.
<script setup lang="ts">
const items = ref([
  {
    label: 'app/',
    defaultExpanded: true,
    children: [
      {
        label: 'composables/',
        children: [
          {
            label: 'useAuth.ts',
            icon: 'i-vscode-icons-file-type-typescript'
          },
          {
            label: 'useUser.ts',
            icon: 'i-vscode-icons-file-type-typescript'
          }
        ]
      },
      {
        label: 'components/',
        defaultExpanded: true,
        children: [
          {
            label: 'Card.vue',
            icon: 'i-vscode-icons-file-type-vue'
          },
          {
            label: 'Button.vue',
            icon: 'i-vscode-icons-file-type-vue'
          }
        ]
      }
    ]
  },
  {
    label: 'app.vue',
    icon: 'i-vscode-icons-file-type-vue'
  },
  {
    label: 'nuxt.config.ts',
    icon: 'i-vscode-icons-file-type-nuxt'
  }
])
</script>
<template>
  <UTree size="xl" :items="items" />
</template>
Trailing Icon
Use the trailing-icon prop to customize the trailing Icon of a parent node. Defaults to i-lucide-chevron-down.
<script setup lang="ts">
const items = ref([
  {
    label: 'app/',
    defaultExpanded: true,
    children: [
      {
        label: 'composables/',
        trailingIcon: 'i-lucide-chevron-down',
        children: [
          {
            label: 'useAuth.ts',
            icon: 'i-vscode-icons-file-type-typescript'
          },
          {
            label: 'useUser.ts',
            icon: 'i-vscode-icons-file-type-typescript'
          }
        ]
      },
      {
        label: 'components/',
        defaultExpanded: true,
        children: [
          {
            label: 'Card.vue',
            icon: 'i-vscode-icons-file-type-vue'
          },
          {
            label: 'Button.vue',
            icon: 'i-vscode-icons-file-type-vue'
          }
        ]
      }
    ]
  },
  {
    label: 'app.vue',
    icon: 'i-vscode-icons-file-type-vue'
  },
  {
    label: 'nuxt.config.ts',
    icon: 'i-vscode-icons-file-type-nuxt'
  }
])
</script>
<template>
  <UTree trailing-icon="i-lucide-arrow-down" :items="items" />
</template>
Expanded Icon
Use the expanded-icon and collapsed-icon props to customize the icons of a parent node when it is expanded or collapsed. Defaults to i-lucide-folder-open and i-lucide-folder respectively.
<script setup lang="ts">
const items = ref([
  {
    label: 'app/',
    defaultExpanded: true,
    children: [
      {
        label: 'composables/',
        children: [
          {
            label: 'useAuth.ts',
            icon: 'i-vscode-icons-file-type-typescript'
          },
          {
            label: 'useUser.ts',
            icon: 'i-vscode-icons-file-type-typescript'
          }
        ]
      },
      {
        label: 'components/',
        defaultExpanded: true,
        children: [
          {
            label: 'Card.vue',
            icon: 'i-vscode-icons-file-type-vue'
          },
          {
            label: 'Button.vue',
            icon: 'i-vscode-icons-file-type-vue'
          }
        ]
      }
    ]
  },
  {
    label: 'app.vue',
    icon: 'i-vscode-icons-file-type-vue'
  },
  {
    label: 'nuxt.config.ts',
    icon: 'i-vscode-icons-file-type-nuxt'
  }
])
</script>
<template>
  <UTree expanded-icon="i-lucide-book-open" collapsed-icon="i-lucide-book" :items="items" />
</template>
app.config.ts under ui.icons.folder and ui.icons.folderOpen keys.vite.config.ts under ui.icons.folder and ui.icons.folderOpen keys.Disabled
Use the disabled prop to prevent any user interaction with the Tree.
item.disabled.<script setup lang="ts">
const items = ref([
  {
    label: 'app',
    icon: 'i-lucide-folder',
    defaultExpanded: true,
    children: [
      {
        label: 'composables',
        icon: 'i-lucide-folder',
        children: [
          {
            label: 'useAuth.ts',
            icon: 'i-vscode-icons-file-type-typescript'
          },
          {
            label: 'useUser.ts',
            icon: 'i-vscode-icons-file-type-typescript'
          }
        ]
      },
      {
        label: 'components',
        icon: 'i-lucide-folder',
        children: [
          {
            label: 'Home',
            icon: 'i-lucide-folder',
            children: [
              {
                label: 'Card.vue',
                icon: 'i-vscode-icons-file-type-vue'
              },
              {
                label: 'Button.vue',
                icon: 'i-vscode-icons-file-type-vue'
              }
            ]
          }
        ]
      }
    ]
  },
  {
    label: 'app.vue',
    icon: 'i-vscode-icons-file-type-vue'
  },
  {
    label: 'nuxt.config.ts',
    icon: 'i-vscode-icons-file-type-nuxt'
  }
])
</script>
<template>
  <UTree disabled :items="items" />
</template>
Examples
Control selected item(s)
You can control the selected item(s) by using the default-value prop or the v-model directive.
<script setup lang="ts">
import type { TreeItem } from '@nuxt/ui'
const items: TreeItem[] = [
  {
    label: 'app/',
    defaultExpanded: true,
    children: [
      {
        label: 'composables/',
        children: [
          { label: 'useAuth.ts', icon: 'i-vscode-icons-file-type-typescript' },
          { label: 'useUser.ts', icon: 'i-vscode-icons-file-type-typescript' }
        ]
      },
      {
        label: 'components/',
        defaultExpanded: true,
        children: [
          { label: 'Card.vue', icon: 'i-vscode-icons-file-type-vue' },
          { label: 'Button.vue', icon: 'i-vscode-icons-file-type-vue' }
        ]
      }
    ]
  },
  { label: 'app.vue', icon: 'i-vscode-icons-file-type-vue' },
  { label: 'nuxt.config.ts', icon: 'i-vscode-icons-file-type-nuxt' }
]
const value = ref()
</script>
<template>
  <UTree v-model="value" :items="items" />
</template>
If you want to prevent an item from being selected, you can use the item.onSelect() property:
<script setup lang="ts">
import type { TreeItem } from '@nuxt/ui'
const items: TreeItem[] = [
  {
    label: 'app/',
    defaultExpanded: true,
    onSelect: (e: Event) => {
      e.preventDefault()
    },
    children: [
      {
        label: 'composables/',
        children: [
          { label: 'useAuth.ts', icon: 'i-vscode-icons-file-type-typescript' },
          { label: 'useUser.ts', icon: 'i-vscode-icons-file-type-typescript' }
        ]
      },
      {
        label: 'components/',
        defaultExpanded: true,
        children: [
          { label: 'Card.vue', icon: 'i-vscode-icons-file-type-vue' },
          { label: 'Button.vue', icon: 'i-vscode-icons-file-type-vue' }
        ]
      }
    ]
  },
  { label: 'app.vue', icon: 'i-vscode-icons-file-type-vue' },
  { label: 'nuxt.config.ts', icon: 'i-vscode-icons-file-type-nuxt' }
]
</script>
<template>
  <UTree :items="items" />
</template>
Control expanded items
You can control the expanded items by using the default-expanded prop or the v-model directive.
<script setup lang="ts">
import type { TreeItem } from '@nuxt/ui'
const items: TreeItem[] = [
  {
    label: 'app/',
    value: 'app',
    children: [
      {
        label: 'composables/',
        value: 'composables',
        children: [
          { label: 'useAuth.ts', icon: 'i-vscode-icons-file-type-typescript' },
          { label: 'useUser.ts', icon: 'i-vscode-icons-file-type-typescript' }
        ]
      },
      {
        label: 'components/',
        value: 'components',
        children: [
          { label: 'Card.vue', icon: 'i-vscode-icons-file-type-vue' },
          { label: 'Button.vue', icon: 'i-vscode-icons-file-type-vue' }
        ]
      }
    ]
  },
  { label: 'app.vue', icon: 'i-vscode-icons-file-type-vue' },
  { label: 'nuxt.config.ts', icon: 'i-vscode-icons-file-type-nuxt' }
]
const expanded = ref(['app', 'composables'])
</script>
<template>
  <UTree v-model:expanded="expanded" :items="items" />
</template>
If you want to prevent an item from being expanded, you can use the item.onToggle() property:
<script setup lang="ts">
import type { TreeItem } from '@nuxt/ui'
const items: TreeItem[] = [
  {
    label: 'app/',
    defaultExpanded: true,
    onToggle: (e: Event) => {
      e.preventDefault()
    },
    children: [
      {
        label: 'composables/',
        children: [
          { label: 'useAuth.ts', icon: 'i-vscode-icons-file-type-typescript' },
          { label: 'useUser.ts', icon: 'i-vscode-icons-file-type-typescript' }
        ]
      },
      {
        label: 'components/',
        defaultExpanded: true,
        children: [
          { label: 'Card.vue', icon: 'i-vscode-icons-file-type-vue' },
          { label: 'Button.vue', icon: 'i-vscode-icons-file-type-vue' }
        ]
      }
    ]
  },
  { label: 'app.vue', icon: 'i-vscode-icons-file-type-vue' },
  { label: 'nuxt.config.ts', icon: 'i-vscode-icons-file-type-nuxt' }
]
</script>
<template>
  <UTree :items="items" />
</template>
With custom slot
Use the slot property to customize a specific item.
You will have access to the following slots:
- #{{ item.slot }}-wrapper
- #{{ item.slot }}
- #{{ item.slot }}-leading
- #{{ item.slot }}-label
- #{{ item.slot }}-trailing
<script setup lang="ts">
import type { TreeItem } from '@nuxt/ui'
const items = [
  {
    label: 'app/',
    slot: 'app' as const,
    defaultExpanded: true,
    children: [
      {
        label: 'composables/',
        children: [
          { label: 'useAuth.ts', icon: 'i-vscode-icons-file-type-typescript' },
          { label: 'useUser.ts', icon: 'i-vscode-icons-file-type-typescript' }
        ]
      },
      {
        label: 'components/',
        defaultExpanded: true,
        children: [
          { label: 'Card.vue', icon: 'i-vscode-icons-file-type-vue' },
          { label: 'Button.vue', icon: 'i-vscode-icons-file-type-vue' }
        ]
      }
    ]
  },
  { label: 'app.vue', icon: 'i-vscode-icons-file-type-vue' },
  { label: 'nuxt.config.ts', icon: 'i-vscode-icons-file-type-nuxt' }
] satisfies TreeItem[]
</script>
<template>
  <UTree :items="items">
    <template #app="{ item }">
      <p class="italic font-bold">
        {{ item.label }}
      </p>
    </template>
  </UTree>
</template>
API
Props
| Prop | Default | Type | 
|---|---|---|
| as | 
 | 
 The element or component this component should render as. | 
| color | 
 | 
 | 
| size | 
 | 
 | 
| valueKey | 
 | 
 The key used to get the value from the item. | 
| labelKey | 
 | 
 The key used to get the label from the item. | 
| trailingIcon | 
 | 
 The icon displayed on the right side of a parent node. | 
| expandedIcon | 
 | 
 The icon displayed when a parent node is expanded. | 
| collapsedIcon | 
 | 
 The icon displayed when a parent node is collapsed. | 
| items | 
 
 | |
| modelValue | 
 The controlled value of the Tree. Can be bind as  | |
| defaultValue | 
 The value of the Tree when initially rendered. Use when you do not need to control the state of the Tree. | |
| multiple | 
 Whether multiple options can be selected or not. | |
| defaultExpanded | 
 The value of the expanded tree when initially rendered. Use when you do not need to control the state of the expanded tree | |
| disabled | 
 When  | |
| expanded | 
 The controlled value of the expanded item. Can be binded with with  | |
| selectionBehavior | 
 How multiple selection should behave in the collection. | |
| propagateSelect | 
 When  | |
| bubbleSelect | 
 When  | |
| ui | 
 | 
Slots
| Slot | Type | 
|---|---|
| item-wrapper | |
| item | |
| item-leading | |
| item-label | |
| item-trailing | 
 | 
Emits
| Event | Type | 
|---|---|
| update:modelValue | 
 | 
| update:expanded | 
 | 
Theme
export default defineAppConfig({
  ui: {
    tree: {
      slots: {
        root: 'relative isolate',
        item: '',
        listWithChildren: 'ms-4.5 border-s border-default',
        itemWithChildren: 'ps-1.5 -ms-px',
        link: 'relative group w-full flex items-center text-sm before:absolute before:inset-y-px before:inset-x-0 before:z-[-1] before:rounded-md focus:outline-none focus-visible:outline-none focus-visible:before:ring-inset focus-visible:before:ring-2',
        linkLeadingIcon: 'shrink-0',
        linkLabel: 'truncate',
        linkTrailing: 'ms-auto inline-flex gap-1.5 items-center',
        linkTrailingIcon: 'shrink-0 transform transition-transform duration-200 group-data-expanded:rotate-180'
      },
      variants: {
        color: {
          primary: {
            link: 'focus-visible:before:ring-primary'
          },
          secondary: {
            link: 'focus-visible:before:ring-secondary'
          },
          success: {
            link: 'focus-visible:before:ring-success'
          },
          info: {
            link: 'focus-visible:before:ring-info'
          },
          warning: {
            link: 'focus-visible:before:ring-warning'
          },
          error: {
            link: 'focus-visible:before:ring-error'
          },
          neutral: {
            link: 'focus-visible:before:ring-inverted'
          }
        },
        size: {
          xs: {
            link: 'px-2 py-1 text-xs gap-1',
            linkLeadingIcon: 'size-4',
            linkTrailingIcon: 'size-4'
          },
          sm: {
            link: 'px-2.5 py-1.5 text-xs gap-1.5',
            linkLeadingIcon: 'size-4',
            linkTrailingIcon: 'size-4'
          },
          md: {
            link: 'px-2.5 py-1.5 text-sm gap-1.5',
            linkLeadingIcon: 'size-5',
            linkTrailingIcon: 'size-5'
          },
          lg: {
            link: 'px-3 py-2 text-sm gap-2',
            linkLeadingIcon: 'size-5',
            linkTrailingIcon: 'size-5'
          },
          xl: {
            link: 'px-3 py-2 text-base gap-2',
            linkLeadingIcon: 'size-6',
            linkTrailingIcon: 'size-6'
          }
        },
        selected: {
          true: {
            link: 'before:bg-elevated'
          },
          false: {
            link: [
              'hover:not-disabled:text-highlighted hover:not-disabled:before:bg-elevated/50',
              'transition-colors before:transition-colors'
            ]
          }
        },
        disabled: {
          true: {
            link: 'cursor-not-allowed opacity-75'
          }
        }
      },
      compoundVariants: [
        {
          color: 'primary',
          selected: true,
          class: {
            link: 'text-primary'
          }
        },
        {
          color: 'neutral',
          selected: true,
          class: {
            link: 'text-highlighted'
          }
        }
      ],
      defaultVariants: {
        color: 'primary',
        size: 'md'
      }
    }
  }
})
import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'
import ui from '@nuxt/ui/vite'
export default defineConfig({
  plugins: [
    vue(),
    ui({
      ui: {
        tree: {
          slots: {
            root: 'relative isolate',
            item: '',
            listWithChildren: 'ms-4.5 border-s border-default',
            itemWithChildren: 'ps-1.5 -ms-px',
            link: 'relative group w-full flex items-center text-sm before:absolute before:inset-y-px before:inset-x-0 before:z-[-1] before:rounded-md focus:outline-none focus-visible:outline-none focus-visible:before:ring-inset focus-visible:before:ring-2',
            linkLeadingIcon: 'shrink-0',
            linkLabel: 'truncate',
            linkTrailing: 'ms-auto inline-flex gap-1.5 items-center',
            linkTrailingIcon: 'shrink-0 transform transition-transform duration-200 group-data-expanded:rotate-180'
          },
          variants: {
            color: {
              primary: {
                link: 'focus-visible:before:ring-primary'
              },
              secondary: {
                link: 'focus-visible:before:ring-secondary'
              },
              success: {
                link: 'focus-visible:before:ring-success'
              },
              info: {
                link: 'focus-visible:before:ring-info'
              },
              warning: {
                link: 'focus-visible:before:ring-warning'
              },
              error: {
                link: 'focus-visible:before:ring-error'
              },
              neutral: {
                link: 'focus-visible:before:ring-inverted'
              }
            },
            size: {
              xs: {
                link: 'px-2 py-1 text-xs gap-1',
                linkLeadingIcon: 'size-4',
                linkTrailingIcon: 'size-4'
              },
              sm: {
                link: 'px-2.5 py-1.5 text-xs gap-1.5',
                linkLeadingIcon: 'size-4',
                linkTrailingIcon: 'size-4'
              },
              md: {
                link: 'px-2.5 py-1.5 text-sm gap-1.5',
                linkLeadingIcon: 'size-5',
                linkTrailingIcon: 'size-5'
              },
              lg: {
                link: 'px-3 py-2 text-sm gap-2',
                linkLeadingIcon: 'size-5',
                linkTrailingIcon: 'size-5'
              },
              xl: {
                link: 'px-3 py-2 text-base gap-2',
                linkLeadingIcon: 'size-6',
                linkTrailingIcon: 'size-6'
              }
            },
            selected: {
              true: {
                link: 'before:bg-elevated'
              },
              false: {
                link: [
                  'hover:not-disabled:text-highlighted hover:not-disabled:before:bg-elevated/50',
                  'transition-colors before:transition-colors'
                ]
              }
            },
            disabled: {
              true: {
                link: 'cursor-not-allowed opacity-75'
              }
            }
          },
          compoundVariants: [
            {
              color: 'primary',
              selected: true,
              class: {
                link: 'text-primary'
              }
            },
            {
              color: 'neutral',
              selected: true,
              class: {
                link: 'text-highlighted'
              }
            }
          ],
          defaultVariants: {
            color: 'primary',
            size: 'md'
          }
        }
      }
    })
  ]
})
import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'
import uiPro from '@nuxt/ui-pro/vite'
export default defineConfig({
  plugins: [
    vue(),
    uiPro({
      ui: {
        tree: {
          slots: {
            root: 'relative isolate',
            item: '',
            listWithChildren: 'ms-4.5 border-s border-default',
            itemWithChildren: 'ps-1.5 -ms-px',
            link: 'relative group w-full flex items-center text-sm before:absolute before:inset-y-px before:inset-x-0 before:z-[-1] before:rounded-md focus:outline-none focus-visible:outline-none focus-visible:before:ring-inset focus-visible:before:ring-2',
            linkLeadingIcon: 'shrink-0',
            linkLabel: 'truncate',
            linkTrailing: 'ms-auto inline-flex gap-1.5 items-center',
            linkTrailingIcon: 'shrink-0 transform transition-transform duration-200 group-data-expanded:rotate-180'
          },
          variants: {
            color: {
              primary: {
                link: 'focus-visible:before:ring-primary'
              },
              secondary: {
                link: 'focus-visible:before:ring-secondary'
              },
              success: {
                link: 'focus-visible:before:ring-success'
              },
              info: {
                link: 'focus-visible:before:ring-info'
              },
              warning: {
                link: 'focus-visible:before:ring-warning'
              },
              error: {
                link: 'focus-visible:before:ring-error'
              },
              neutral: {
                link: 'focus-visible:before:ring-inverted'
              }
            },
            size: {
              xs: {
                link: 'px-2 py-1 text-xs gap-1',
                linkLeadingIcon: 'size-4',
                linkTrailingIcon: 'size-4'
              },
              sm: {
                link: 'px-2.5 py-1.5 text-xs gap-1.5',
                linkLeadingIcon: 'size-4',
                linkTrailingIcon: 'size-4'
              },
              md: {
                link: 'px-2.5 py-1.5 text-sm gap-1.5',
                linkLeadingIcon: 'size-5',
                linkTrailingIcon: 'size-5'
              },
              lg: {
                link: 'px-3 py-2 text-sm gap-2',
                linkLeadingIcon: 'size-5',
                linkTrailingIcon: 'size-5'
              },
              xl: {
                link: 'px-3 py-2 text-base gap-2',
                linkLeadingIcon: 'size-6',
                linkTrailingIcon: 'size-6'
              }
            },
            selected: {
              true: {
                link: 'before:bg-elevated'
              },
              false: {
                link: [
                  'hover:not-disabled:text-highlighted hover:not-disabled:before:bg-elevated/50',
                  'transition-colors before:transition-colors'
                ]
              }
            },
            disabled: {
              true: {
                link: 'cursor-not-allowed opacity-75'
              }
            }
          },
          compoundVariants: [
            {
              color: 'primary',
              selected: true,
              class: {
                link: 'text-primary'
              }
            },
            {
              color: 'neutral',
              selected: true,
              class: {
                link: 'text-highlighted'
              }
            }
          ],
          defaultVariants: {
            color: 'primary',
            size: 'md'
          }
        }
      }
    })
  ]
})