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title: Tree
sidebar_label: Tree
---
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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).
:::
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