> ## Documentation Index
> Fetch the complete documentation index at: https://tomee-mintlify-cecfcf7e.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Tree

> Use the tree component to display hierarchical file and folder structures with collapsible nodes and syntax highlighting for path names.

Use tree components to display hierarchical structures like file systems, project directories, or nested content. The tree component supports keyboard navigation and accessibility features.

Create trees with either a Markdown list or the `Tree.Folder` and `Tree.File` components. `<Tree>` and `<FileTree>` are aliases, so either tag works with either syntax.

Use the Markdown list syntax for quick, static trees where every folder can expand by default. Use the component syntax when you need to control open state per folder with `defaultOpen`, mark folders as non-interactive with `openable`, or mix files and folders at arbitrary depth.

## Markdown list syntax

Write a nested Markdown list inside `<FileTree>` (or `<Tree>`) to describe a folder structure. Add a trailing slash to mark a folder, or nest items under it. Folders that contain nested items expand by default.

<FileTree>
  * docs/
    * index.mdx
    * guides/
      * configuration.mdx
  * docs.config.ts
</FileTree>

```mdx File tree example theme={null}
<FileTree>

- docs/
  - index.mdx
  - guides/
    - configuration.mdx
- docs.config.ts

</FileTree>
```

Leave a blank line after the opening tag and before the closing tag so that the list parses as Markdown. Names strip inline formatting like `` `code` ``, `**bold**`, or `_italic_`.

## Basic tree

<Tree>
  <Tree.Folder name="app" defaultOpen>
    <Tree.File name="layout.tsx" />

    <Tree.File name="page.tsx" />

    <Tree.File name="global.css" />
  </Tree.Folder>

  <Tree.Folder name="lib">
    <Tree.File name="utils.ts" />

    <Tree.File name="db.ts" />
  </Tree.Folder>

  <Tree.File name="package.json" />

  <Tree.File name="tsconfig.json" />
</Tree>

```mdx Tree example theme={null}
<Tree>
  <Tree.Folder name="app" defaultOpen>
    <Tree.File name="layout.tsx" />
    <Tree.File name="page.tsx" />
    <Tree.File name="global.css" />
  </Tree.Folder>
  <Tree.Folder name="lib">
    <Tree.File name="utils.ts" />
    <Tree.File name="db.ts" />
  </Tree.Folder>
  <Tree.File name="package.json" />
  <Tree.File name="tsconfig.json" />
</Tree>
```

## Nested folders

Create deeply nested structures by nesting `Tree.Folder` components within each other.

<Tree>
  <Tree.Folder name="app" defaultOpen>
    <Tree.File name="layout.tsx" />

    <Tree.File name="page.tsx" />

    <Tree.Folder name="api" defaultOpen>
      <Tree.Folder name="auth">
        <Tree.File name="route.ts" />
      </Tree.Folder>

      <Tree.File name="route.ts" />
    </Tree.Folder>

    <Tree.Folder name="components">
      <Tree.File name="button.tsx" />

      <Tree.File name="dialog.tsx" />

      <Tree.File name="tabs.tsx" />
    </Tree.Folder>
  </Tree.Folder>

  <Tree.File name="package.json" />
</Tree>

```mdx Nested folders example theme={null}
<Tree>
  <Tree.Folder name="app" defaultOpen>
    <Tree.File name="layout.tsx" />
    <Tree.File name="page.tsx" />
    <Tree.Folder name="api" defaultOpen>
      <Tree.Folder name="auth">
        <Tree.File name="route.ts" />
      </Tree.Folder>
      <Tree.File name="route.ts" />
    </Tree.Folder>
    <Tree.Folder name="components">
      <Tree.File name="button.tsx" />
      <Tree.File name="dialog.tsx" />
      <Tree.File name="tabs.tsx" />
    </Tree.Folder>
  </Tree.Folder>
  <Tree.File name="package.json" />
</Tree>
```

## Highlight the active path

Add the `highlight` prop to `Tree.File` or `Tree.Folder` to mark the current item. Use it to draw attention to a file or folder you reference in nearby prose, such as the file a reader should open next.

Highlighting a folder also tints its descendants, so the active path stands out even when the folder is expanded.

<Tree>
  <Tree.Folder name="app" defaultOpen>
    <Tree.File name="layout.tsx" />

    <Tree.File name="page.tsx" highlight />

    <Tree.Folder name="api" defaultOpen highlight>
      <Tree.File name="route.ts" />
    </Tree.Folder>
  </Tree.Folder>

  <Tree.File name="package.json" />
</Tree>

```mdx Highlighted tree example theme={null}
<Tree>
  <Tree.Folder name="app" defaultOpen>
    <Tree.File name="layout.tsx" />
    <Tree.File name="page.tsx" highlight />
    <Tree.Folder name="api" defaultOpen highlight>
      <Tree.File name="route.ts" />
    </Tree.Folder>
  </Tree.Folder>
  <Tree.File name="package.json" />
</Tree>
```

### Customize the highlight color

The highlight color is exposed as the `--tree-highlight` CSS variable. Set it on the `Tree` root component to override the color for that tree.

```mdx Custom highlight color theme={null}
<Tree style={{ "--tree-highlight": "rgb(59 130 246)" }}>
  <Tree.Folder name="app" defaultOpen>
    <Tree.File name="page.tsx" highlight />
  </Tree.Folder>
</Tree>
```

## Keyboard navigation

The tree component supports keyboard navigation.

* **Arrow keys**: Navigate up and down through visible items.
* **Right arrow**: Expand a closed folder or move to the first child of an open folder.
* **Left arrow**: Collapse an open folder or move to the parent folder.
* **Home**: Jump to the first item in the tree.
* **End**: Jump to the last visible item in the tree.
* **Enter/Space**: Toggle folder open/closed state.
* **\***: Expand all sibling folders at the current level.
* **Type-ahead search**: Type characters to jump to items that start with those characters.

## Properties

### Tree.Folder

<ResponseField name="name" type="string" required>
  The name of the folder displayed in the tree.
</ResponseField>

<ResponseField name="defaultOpen" type="boolean" default="false">
  Whether the folder expands by default.
</ResponseField>

<ResponseField name="openable" type="boolean" default="true">
  Whether users can open and close the folder. Set to false for non-interactive folders.
</ResponseField>

<ResponseField name="highlight" type="boolean" default="false">
  Whether to highlight the folder as the active item. Descendants are tinted to reinforce the active path.
</ResponseField>

### Tree.File

<ResponseField name="name" type="string" required>
  The name of the file displayed in the tree.
</ResponseField>

<ResponseField name="highlight" type="boolean" default="false">
  Whether to highlight the file as the active item.
</ResponseField>