superset2/docs/developer_docs_versioned_docs/version-6.1.0/components/ui/tree.mdx

---
title: Tree
sidebar_label: Tree
---

<!--
    Licensed to the Apache Software Foundation (ASF) under one
    or more contributor license agreements.  See the NOTICE file
    distributed with this work for additional information
    regarding copyright ownership.  The ASF licenses this file
    to you under the Apache License, Version 2.0 (the
    "License"); you may not use this file except in compliance
    with the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing,
    software distributed under the License is distributed on an
    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    KIND, either express or implied.  See the License for the
    specific language governing permissions and limitations
    under the License.
-->

import { StoryWithControls } from '../../../../src/components/StorybookWrapper';

# Tree

The Tree component is used to display hierarchical data in a tree structure. It allows for features such as selection, expansion, and drag-and-drop functionality.

## Live Example

<StoryWithControls
  component="Tree"
  props={{
  checkable: false,
  defaultExpandAll: false,
  disabled: false,
  draggable: false,
  multiple: false,
  selectable: true,
  showIcon: false,
  showLine: false,
  treeData: [
    {
      title: "parent 1",
      key: "0-0",
      children: [
        {
          title: "parent 1-0",
          key: "0-0-0",
          children: [
            {
              title: "leaf",
              key: "0-0-0-0"
            },
            {
              title: "leaf",
              key: "0-0-0-1"
            },
            {
              title: "leaf",
              key: "0-0-0-2"
            }
          ]
        },
        {
          title: "parent 1-1",
          key: "0-0-1",
          children: [
            {
              title: "leaf",
              key: "0-0-1-0"
            }
          ]
        },
        {
          title: "parent 1-2",
          key: "0-0-2",
          children: [
            {
              title: "leaf",
              key: "0-0-2-0"
            },
            {
              title: "leaf",
              key: "0-0-2-1"
            }
          ]
        }
      ]
    }
  ],
  defaultExpandedKeys: [
    "0-0",
    "0-0-0"
  ]
}}
  controls={[
  {
    name: "checkable",
    label: "Checkable",
    type: "boolean",
    description: "Add a Checkbox before the treeNodes"
  },
  {
    name: "defaultExpandAll",
    label: "Default Expand All",
    type: "boolean",
    description: "Whether to expand all treeNodes by default"
  },
  {
    name: "disabled",
    label: "Disabled",
    type: "boolean",
    description: "Whether disabled the tree"
  },
  {
    name: "draggable",
    label: "Draggable",
    type: "boolean",
    description: "Specifies whether this Tree or the node is draggable"
  },
  {
    name: "multiple",
    label: "Multiple",
    type: "boolean",
    description: "Allows selecting multiple treeNodes"
  },
  {
    name: "selectable",
    label: "Selectable",
    type: "boolean",
    description: "Whether can be selected"
  },
  {
    name: "showIcon",
    label: "Show Icon",
    type: "boolean",
    description: "Controls whether to display the icon node"
  },
  {
    name: "showLine",
    label: "Show Line",
    type: "boolean",
    description: "Shows a connecting line"
  }
]}
/>

## Try It

Edit the code below to experiment with the component:

```tsx live
function Demo() {
  const treeData = [
    {
      title: 'Databases',
      key: 'databases',
      children: [
        { title: 'PostgreSQL', key: 'postgres' },
        { title: 'MySQL', key: 'mysql' },
        { title: 'SQLite', key: 'sqlite' },
      ],
    },
    {
      title: 'Charts',
      key: 'charts',
      children: [
        { title: 'Bar Chart', key: 'bar' },
        { title: 'Line Chart', key: 'line' },
        { title: 'Pie Chart', key: 'pie' },
      ],
    },
  ];
  return <Tree treeData={treeData} defaultExpandAll />;
}
```

## Checkable Tree

```tsx live
function CheckableTree() {
  const [checkedKeys, setCheckedKeys] = React.useState(['postgres']);
  const treeData = [
    {
      title: 'Databases',
      key: 'databases',
      children: [
        { title: 'PostgreSQL', key: 'postgres' },
        { title: 'MySQL', key: 'mysql' },
      ],
    },
    {
      title: 'Charts',
      key: 'charts',
      children: [
        { title: 'Bar Chart', key: 'bar' },
        { title: 'Line Chart', key: 'line' },
      ],
    },
  ];
  return (
    <Tree
      treeData={treeData}
      checkable
      defaultExpandAll
      checkedKeys={checkedKeys}
      onCheck={setCheckedKeys}
    />
  );
}
```

## With Lines and Icons

```tsx live
function LinesAndIcons() {
  const treeData = [
    {
      title: 'Dashboards',
      key: 'dashboards',
      children: [
        { title: 'Sales Dashboard', key: 'sales' },
        { title: 'Marketing Dashboard', key: 'marketing' },
      ],
    },
    {
      title: 'Reports',
      key: 'reports',
      children: [
        { title: 'Weekly Report', key: 'weekly' },
        { title: 'Monthly Report', key: 'monthly' },
      ],
    },
  ];
  return <Tree treeData={treeData} showLine showIcon defaultExpandAll />;
}
```

## Props

| Prop | Type | Default | Description |
|------|------|---------|-------------|
| `checkable` | `boolean` | `false` | Add a Checkbox before the treeNodes |
| `defaultExpandAll` | `boolean` | `false` | Whether to expand all treeNodes by default |
| `disabled` | `boolean` | `false` | Whether disabled the tree |
| `draggable` | `boolean` | `false` | Specifies whether this Tree or the node is draggable |
| `multiple` | `boolean` | `false` | Allows selecting multiple treeNodes |
| `selectable` | `boolean` | `true` | Whether can be selected |
| `showIcon` | `boolean` | `false` | Controls whether to display the icon node |
| `showLine` | `boolean` | `false` | Shows a connecting line |
| `treeData` | `any` | `[{"title":"parent 1","key":"0-0","children":[{"title":"parent 1-0","key":"0-0-0","children":[{"title":"leaf","key":"0-0-0-0"},{"title":"leaf","key":"0-0-0-1"},{"title":"leaf","key":"0-0-0-2"}]},{"title":"parent 1-1","key":"0-0-1","children":[{"title":"leaf","key":"0-0-1-0"}]},{"title":"parent 1-2","key":"0-0-2","children":[{"title":"leaf","key":"0-0-2-0"},{"title":"leaf","key":"0-0-2-1"}]}]}]` | - |
| `defaultExpandedKeys` | `any` | `["0-0","0-0-0"]` | - |

## Import

```tsx
import { Tree } from '@superset-ui/core/components';
```

---

:::tip[Improve this page]
This documentation is auto-generated from the component's Storybook story.
Help improve it by [editing the story file](https://github.com/apache/superset/edit/master/superset-frontend/packages/superset-ui-core/src/components/Tree/Tree.stories.tsx).
:::