Tree View

Nested folders with the full ARIA tree keyboard model and typeahead.

Category
Navigation & layout
Access
Free with an account
Source
184 lines · one file

The decision inside it

One tab stop, however big

Four hundred items should not mean four hundred Tab presses to get past them. Roving tabindex keeps exactly one item focusable.

When to use it

Use Tree View for nested items people expand and select: folders and files, categories, an org chart. Full keyboard support (arrows, Home, End, type-ahead).

Installation

How you get it

Paste this into Claude Code, Cursor, Codex or any coding agent. It installs the file and uses it as it is, instead of writing a new one.

Use Liro's Tree View for this.
Install it: npx shadcn@latest add @liro/tree
(the @liro registry is set up in components.json, with LIRO_KEY in .env.local)
Import it from @/components/ui/tree.
Do not rewrite or restyle it. Pass my data through its props
and keep its built-in states.

For the full brief with every prop and the mistakes assistants usually make, use Copy prompt above. Free components install through the @liro registry with your CLI token: see the Namespaced tab.

Usage

components/file-tree.tsx
import * as React from "react";
import { Tree, type TreeNode } from "@/components/ui/tree";

const items: TreeNode[] = [
  { id: "contracts", label: "Contracts", children: [{ id: "msa", label: "Vertically MSA.pdf" }, { id: "nda", label: "NDA.pdf" }] },
  { id: "invoices", label: "Invoices", children: [{ id: "oct", label: "October.csv" }] },
];

export function FileTree() {
  const [selected, setSelected] = React.useState<string>();
  return <Tree items={items} label="Files" selected={selected} onSelect={setSelected} defaultExpanded={["contracts"]} />;
}

API reference

“Copy prompt” above puts a full brief on your clipboard, install command, dependencies, props, and the mistakes an assistant usually makes with this component.

Props

Read from the component’s own TypeScript interface when the site is built, so this table cannot drift from the file you install.

TypeNotes
itemsTreeNode[] Yes–
selectedstring No–
onSelect(id: string, node: TreeNode) => void No–
expandedstring[] No–
defaultExpandedstring[] No–
onExpandedChange(ids: string[]) => void No–
labelstring YesAccessible name.
classNamestring No–

Dependencies

npm packages

clsxlucide-reacttailwind-merge

Liro foundations, installed alongside it

liro-theme

Accessibility

  • Keyboard reachable throughout, in visual order
  • Focus trapped in overlays, Escape closes them
  • Focus returns to whatever opened it
  • Live regions announce what changed, not that something did
  • Honours prefers-reduced-motion

Responsive behavior

  • Sizes to its container, not the viewport
  • Usable from 320px up
  • Pointer-based interaction, so trackpad and touch both work
  • No hover-only affordances