SimpleTreeView API

API reference docs for the React SimpleTreeView component. Learn about the props, CSS, and other APIs of this exported module.

Component demos

For examples and details on the usage of this React component, visit the component demo pages:

Import

import { SimpleTreeView } from '@mui/x-tree-view/SimpleTreeView';
// or
import { SimpleTreeView } from '@mui/x-tree-view';

Learn about the difference by reading this guide on minimizing bundle size.

Props

Props of the native component are also available.

Name	Type	Default	Description
children	node		The content of the component.
classes	object		Override or extend the styles applied to the component. See CSS API below for more details.
defaultExpandedNodes	Array<string>	[]	Expanded node ids. Used when the item's expansion is not controlled.
defaultSelectedNodes	any	[]	Selected node ids. (Uncontrolled) When `multiSelect` is true this takes an array of strings; when false (default) a string.
disabledItemsFocusable	bool	false	If `true`, will allow focus on disabled items.
disableSelection	bool	false	If `true` selection is disabled.
expandedNodes	Array<string>		Expanded node ids. Used when the item's expansion is controlled.
id	string		This prop is used to help implement the accessibility logic. If you don't provide this prop. It falls back to a randomly generated id.
multiSelect	bool	false	If true `ctrl` and `shift` will trigger multiselect.
onExpandedNodesChange	func		Callback fired when tree items are expanded/collapsed. Signature:`function(event: React.SyntheticEvent, nodeIds: array) => void` `event` The event source of the callback. `nodeIds` The ids of the expanded nodes.
onNodeExpansionToggle	func		Callback fired when a tree item is expanded or collapsed. Signature:`function(event: React.SyntheticEvent, nodeId: array, isExpanded: array) => void` `event` The event source of the callback. `nodeId` The nodeId of the modified node. `isExpanded` `true` if the node has just been expanded, `false` if it has just been collapsed.
onNodeFocus	func		Callback fired when tree items are focused. Signature:`function(event: React.SyntheticEvent, nodeId: string, value: string) => void` `event` The event source of the callback Warning: This is a generic event not a focus event. `nodeId` The id of the node focused. `value` of the focused node.
onNodeSelectionToggle	func		Callback fired when a tree item is selected or deselected. Signature:`function(event: React.SyntheticEvent, nodeId: array, isSelected: array) => void` `event` The event source of the callback. `nodeId` The nodeId of the modified node. `isSelected` `true` if the node has just been selected, `false` if it has just been deselected.
onSelectedNodesChange	func		Callback fired when tree items are selected/deselected. Signature:`function(event: React.SyntheticEvent, nodeIds: Array \| string) => void` `event` The event source of the callback `nodeIds` The ids of the selected nodes. When `multiSelect` is `true`, this is an array of strings; when false (default) a string.
selectedNodes	any		Selected node ids. (Controlled) When `multiSelect` is true this takes an array of strings; when false (default) a string.
slotProps	object		The props used for each component slot.
slots	object		Overridable component slots. See Slots API below for more details.
sx	Array<func \| object \| bool> \| func \| object		The system prop that allows defining system overrides as well as additional CSS styles. See the `sx` page for more details.

The ref is forwarded to the root element.

Theme default props

You can use MuiSimpleTreeView to change the default props of this component with the theme.

Slots

Slot name	Class name	Default component	Description
root	.MuiSimpleTreeView-root	`SimpleTreeViewRoot`	Element rendered at the root.
collapseIcon			The default icon used to collapse the node.
expandIcon			The default icon used to expand the node.
endIcon			The default icon displayed next to an end node. This is applied to all tree nodes and can be overridden by the TreeItem `icon` slot prop.