TreeItem2 API

API reference docs for the React TreeItem2 component. Learn about the props, CSS, and other APIs of this exported module.

Demos

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

import { TreeItem2 } from '@mui/x-tree-view/TreeItem2';
// or
import { TreeItem2 } from '@mui/x-tree-view';

Name	Type	Default	Description
itemId*	string	-	The id of the item. Must be unique.
children	node	-	The content of the component.
classes	object	-	Override or extend the styles applied to the component. See CSS classes API below for more details.
disabled	bool	false	If `true`, the item is disabled.
id	string	-	The id attribute of the item. If not provided, it will be generated.
label	node	-	The label of the item.
onBlur	func	-	Callback fired when the item root is blurred.
onFocus	unsupportedProp	-	This prop isn't supported. Use the `onItemFocus` callback on the tree if you need to monitor an item's focus.
onKeyDown	func	-	Callback fired when a key is pressed on the keyboard and the tree is in focus.
slotProps	object	{}	The props used for each component slot.
slots	object	{}	Overridable component slots. See Slots API below for more details.

The component cannot hold a ref.

Slot name	Class name	Default component	Description
root	.MuiTreeItem2-root	`TreeItem2Root`	The component that renders the root.
content	.MuiTreeItem2-content	`TreeItem2Content`	The component that renders the content of the item. (e.g.: everything related to this item, not to its children).
groupTransition	.MuiTreeItem2-groupTransition	`TreeItem2GroupTransition`	The component that renders the children of the item.
iconContainer	.MuiTreeItem2-iconContainer	`TreeItem2IconContainer`	The component that renders the icon.
checkbox	.MuiTreeItem2-checkbox	`TreeItem2Checkbox`	The component that renders the item checkbox for selection.
label	.MuiTreeItem2-label	`TreeItem2Label`	The component that renders the item label.
collapseIcon			The icon used to collapse the item.
expandIcon			The icon used to expand the item.
endIcon			The icon displayed next to an end item.
icon			The icon to display next to the tree item's label.

These class names are useful for styling with CSS. They are applied to the component's slots when specific states are triggered.

Class name	Rule name	Description
.Mui-disabled		State class applied to the element when disabled.
.Mui-expanded		State class applied to the content element when expanded.
.Mui-focused		State class applied to the content element when focused.
.Mui-selected		State class applied to the content element when selected.

You can override the style of the component using one of these customization options:

With a global class name.
With a rule name as part of the component's styleOverrides property in a custom theme.