TreeItem API

API reference docs for the React TreeItem 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

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

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
itemId*	string	-	The id of the item. Must be unique.
children	any	-	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.
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 MuiTreeItem to change the default props of this component with the theme.

Slots

Slot name	Class name	Default component	Description
root	.MuiTreeItem-root	`TreeItemRoot`	The component that renders the root.
content	.MuiTreeItem-content	`TreeItemContent`	The component that renders the content of the item. (e.g.: everything related to this item, not to its children).
groupTransition	.MuiTreeItem-groupTransition	`TreeItemGroupTransition`	The component that renders the children of the item.
iconContainer	.MuiTreeItem-iconContainer	`TreeItemIconContainer`	The component that renders the icon.
checkbox	.MuiTreeItem-checkbox	`TreeItemCheckbox`	The component that renders the item checkbox for selection.
label	.MuiTreeItem-label	`TreeItemLabel`	The component that renders the item label.
labelInput	.MuiTreeItem-labelInput	`TreeItemLabelInput`	The component that renders the input to edit the label when the item is editable and is currently being edited.
dragAndDropOverlay	.MuiTreeItem-dragAndDropOverlay	`TreeItemDragAndDropOverlay`	The component that renders the overlay when an item reordering is ongoing. Warning: This slot is only useful when using the `<RichTreeViewPro />` component.
errorIcon	.MuiTreeItem-errorIcon	`TreeItemErrorContainer`	The component that is rendered when the item is in an error state. Warning: This slot is only useful when using the `<RichTreeViewPro />` component is lazy loading is enabled.
loadingIcon	.MuiTreeItem-loadingIcon	`TreeItemLoadingContainer`	The component that is rendered when the item is in an loading state. Warning: This slot is only useful when using the `<RichTreeViewPro />` component is lazy loading is enabled.
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.

CSS classes

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 content element when the item is disabled. Deprecated－Use the `data-disabled` attribute instead.
.Mui-expanded		State class applied to the content element when the item is expanded. Deprecated－Use the `data-expanded` attribute instead.
.Mui-focused		State class applied to the content element when the item is focused. Deprecated－Use the `data-focused` attribute instead.
.Mui-selected		State class applied to the content element when the item is selected. Deprecated－Use the `data-selected` attribute instead.
.MuiTreeItem-editable	editable	State class applied to the content element when the item is editable. Deprecated－Use the `data-editable` attribute instead.
.MuiTreeItem-editing	editing	State class applied to the content element when the item is being edited. Deprecated－Use the `data-editing` attribute instead.

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.

Source code

If you did not find the information in this page, consider having a look at the implementation of the component for more detail.