# Tree: Indent guides

> `variant="lines"` draws a guide for each level. The guide of the branch that holds the selected or focused row gets darker, so you can see where you are in deep trees.

Example: https://hextaui.com/docs/tree/examples/lines
Component docs: https://hextaui.com/docs/tree.md

## Add this example

```bash
npx shadcn@latest add https://hextaui.com/r/tree-lines.json
```

This adds `components/examples/tree/lines.tsx` with the Tree component and the HextaUI theme tokens.

## Source

```tsx title="components/examples/tree/lines.tsx"
import { IconFile, IconFolder, IconFolderOpen } from "@tabler/icons-react"

import { Tree, TreeGroup, TreeItem, TreeItemLabel } from "@/components/ui/tree"

type Node = { name: string; children?: Node[] }

const files: Node[] = [
  {
    name: "packages",
    children: [
      {
        name: "core",
        children: [
          {
            name: "src",
            children: [
              { name: "index.ts" },
              { name: "store.ts" },
              {
                name: "utils",
                children: [{ name: "clamp.ts" }, { name: "debounce.ts" }],
              },
            ],
          },
          { name: "package.json" },
        ],
      },
      {
        name: "react",
        children: [{ name: "index.tsx" }, { name: "package.json" }],
      },
    ],
  },
  { name: "turbo.json" },
]

function renderNodes(nodes: Node[], parent = ""): React.ReactNode {
  return nodes.map((node) => {
    const value = `${parent}/${node.name}`
    return node.children ? (
      <TreeItem key={value} value={value}>
        <TreeItemLabel icon={<IconFolder />} expandedIcon={<IconFolderOpen />}>
          {node.name}
        </TreeItemLabel>
        <TreeGroup>{renderNodes(node.children, value)}</TreeGroup>
      </TreeItem>
    ) : (
      <TreeItem key={value} value={value}>
        <TreeItemLabel icon={<IconFile />}>{node.name}</TreeItemLabel>
      </TreeItem>
    )
  })
}

export function TreeLines() {
  return (
    <Tree
      aria-label="Monorepo"
      variant="lines"
      defaultExpandedValues={[
        "/packages",
        "/packages/core",
        "/packages/core/src",
        "/packages/core/src/utils",
      ]}
      defaultSelectedValues={["/packages/core/src/utils/clamp.ts"]}
      className="w-full max-w-xs"
    >
      {renderNodes(files)}
    </Tree>
  )
}
```

## Props in this example

### Tree

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `variant` | `"default" \| "lines" \| "connectors"` | `"default"` |  |
| `defaultSelectedValues` | `string[]` | – |  |
| `defaultExpandedValues` | `string[]` | – |  |

### TreeItem

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `value` | `string` | – | Required. Unique within the tree. |

### TreeItemLabel

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `icon` | `ReactNode` | – | Shown before the label. |
| `expandedIcon` | `ReactNode` | – | Crossfades in for icon while the branch is open. |

## More Tree examples

- [Connectors](https://hextaui.com/docs/tree/examples/connectors.md)
- [Checkboxes](https://hextaui.com/docs/tree/examples/checkboxes.md)
- [Navigation](https://hextaui.com/docs/tree/examples/navigation.md)
- [Multiple selection](https://hextaui.com/docs/tree/examples/multiple.md)
- [Controlled](https://hextaui.com/docs/tree/examples/controlled.md)
- [Lazy loading](https://hextaui.com/docs/tree/examples/lazy.md)
- [Small](https://hextaui.com/docs/tree/examples/small.md)
- [Disabled](https://hextaui.com/docs/tree/examples/disabled.md)
- [Long names](https://hextaui.com/docs/tree/examples/long-names.md)
- [Right to left](https://hextaui.com/docs/tree/examples/rtl.md)