useMenu
Provides the behavior and accessibility implementation for a menu component. A menu displays a list of actions or options that a user can choose.
install | yarn add react-aria |
---|---|
version | 3.19.0 |
usage | import {useMenuTrigger, useMenu, useMenuItem, useMenuSection} from 'react-aria' |
API#
useMenuTrigger<T>(
props: AriaMenuTriggerProps,
state: MenuTriggerState,
ref: RefObject<Element>
): MenuTriggerAria<T>
useMenu<T>(
props: AriaMenuOptions<T>,
state: TreeState<T>,
ref: RefObject<HTMLElement>
): MenuAria
useMenuItem<T>(
props: AriaMenuItemProps,
state: TreeState<T>,
ref: RefObject<FocusableElement>
): MenuItemAria
useMenuSection(
(props: AriaMenuSectionProps
)): MenuSectionAria
Features#
There is no native element to implement a menu in HTML that is widely supported. useMenuTrigger
and useMenu
help achieve accessible menu components that can be styled as needed.
- Exposed to assistive technology as a button with a
menu
using ARIA - Support for single, multiple, or no selection
- Support for disabled items
- Support for sections
- Complex item labeling support for accessibility
- Keyboard navigation support including arrow keys, home/end, page up/down
- Automatic scrolling support during keyboard navigation
- Keyboard support for opening the menu using the arrow keys, including automatically focusing the first or last item accordingly
- Typeahead to allow focusing items by typing text
- Virtualized scrolling support for performance with long lists
Anatomy#
A menu trigger consists of a button or other trigger element combined with a popup menu,
with a list of menu items or groups inside. useMenuTrigger
, useMenu
, useMenuItem
,
and useMenuSection
handle exposing this to assistive technology using ARIA, along with
handling keyboard, mouse, and interactions to support selection and focus behavior.
useMenuTrigger
returns props that you should spread onto the appropriate element:
Name | Type | Description |
menuTriggerProps | AriaButtonProps | Props for the menu trigger element. |
menuProps | AriaMenuOptions<T> | Props for the menu. |
useMenu
returns props that you should spread onto the menu container element:
Name | Type | Description |
menuProps | DOMAttributes | Props for the menu element. |
useMenuItem
returns props for an individual item and its children:
Name | Type | Description |
menuItemProps | DOMAttributes | Props for the menu item element. |
labelProps | DOMAttributes | Props for the main text element inside the menu item. |
descriptionProps | DOMAttributes | Props for the description text element inside the menu item, if any. |
keyboardShortcutProps | DOMAttributes | Props for the keyboard shortcut text element inside the item, if any. |
isFocused | boolean | Whether the item is currently focused. |
isSelected | boolean | Whether the item is currently selected. |
isPressed | boolean | Whether the item is currently in a pressed state. |
isDisabled | boolean | Whether the item is disabled. |
useMenuSection
returns props for a section:
Name | Type | Description |
itemProps | DOMAttributes | Props for the wrapper list item. |
headingProps | DOMAttributes | Props for the heading element, if any. |
groupProps | DOMAttributes | Props for the group element. |
State for the trigger is managed by the useMenuTriggerState
hook from @react-stately/menu
. State for the menu itself is managed by the useTreeState
hook from @react-stately/tree
. These state objects should be passed to the appropriate React Aria hooks.
If a menu, menu item, or group does not have a visible label, an aria-label
or aria-labelledby
prop must be passed instead to identify the element to assistive technology.
Example#
A menu consists of several components: a menu button to toggle the menu popup, and the menu itself, which contains items or sections of items. We'll go through each component one by one.
MenuButton#
We'll start with the MenuButton
component, which is what will trigger our menu to appear. This uses
the useMenuTrigger
and useMenuTriggerState
hooks.
The Popover
and Button
components used in this example are independent, and can be shared by many other components.
The code is available below, and documentation is available on the corresponding pages.
import {useMenuTrigger} from 'react-aria';
import {Item, useMenuTriggerState} from 'react-stately';
// Reuse the Popover, and Button from your component library. See below for details.
import {Button, Popover} from 'your-component-library';
function MenuButton(props) {
// Create state based on the incoming props
let state = useMenuTriggerState(props);
// Get props for the button and menu elements
let ref = React.useRef();
let { menuTriggerProps, menuProps } = useMenuTrigger({}, state, ref);
return (
<div style={{ position: 'relative', display: 'inline-block' }}>
<Button
{...menuTriggerProps}
buttonRef={ref}
style={{ height: 30, fontSize: 14 }}
>
{props.label}
<span aria-hidden="true" style={{ paddingLeft: 5 }}>▼</span>
</Button>
{state.isOpen &&
(
<Popover isOpen={state.isOpen} onClose={state.close}>
<Menu
{...props}
{...menuProps}
/>
</Popover>
)}
</div>
);
}
import {useMenuTrigger} from 'react-aria';
import {Item, useMenuTriggerState} from 'react-stately';
// Reuse the Popover, and Button from your component library. See below for details.
import {Button, Popover} from 'your-component-library';
function MenuButton(props) {
// Create state based on the incoming props
let state = useMenuTriggerState(props);
// Get props for the button and menu elements
let ref = React.useRef();
let { menuTriggerProps, menuProps } = useMenuTrigger(
{},
state,
ref
);
return (
<div
style={{
position: 'relative',
display: 'inline-block'
}}
>
<Button
{...menuTriggerProps}
buttonRef={ref}
style={{ height: 30, fontSize: 14 }}
>
{props.label}
<span aria-hidden="true" style={{ paddingLeft: 5 }}>
▼
</span>
</Button>
{state.isOpen &&
(
<Popover
isOpen={state.isOpen}
onClose={state.close}
>
<Menu
{...props}
{...menuProps}
/>
</Popover>
)}
</div>
);
}
import {useMenuTrigger} from 'react-aria';
import {
Item,
useMenuTriggerState
} from 'react-stately';
// Reuse the Popover, and Button from your component library. See below for details.
import {
Button,
Popover
} from 'your-component-library';
function MenuButton(
props
) {
// Create state based on the incoming props
let state =
useMenuTriggerState(
props
);
// Get props for the button and menu elements
let ref = React
.useRef();
let {
menuTriggerProps,
menuProps
} = useMenuTrigger(
{},
state,
ref
);
return (
<div
style={{
position:
'relative',
display:
'inline-block'
}}
>
<Button
{...menuTriggerProps}
buttonRef={ref}
style={{
height: 30,
fontSize: 14
}}
>
{props.label}
<span
aria-hidden="true"
style={{
paddingLeft:
5
}}
>
▼
</span>
</Button>
{state.isOpen &&
(
<Popover
isOpen={state
.isOpen}
onClose={state
.close}
>
<Menu
{...props}
{...menuProps}
/>
</Popover>
)}
</div>
);
}
Menu#
Next, let's implement the Menu
component. This will appear inside the Popover
when the user presses the button.
It is built using the useMenu
and useTreeState
hooks.
For each item in the collection in state, we render either a MenuItem
or MenuSection
(defined below) according to the item's type
property.
import {useTreeState} from 'react-stately';
import {useMenu} from 'react-aria';
function Menu(props) {
// Create menu state based on the incoming props
let state = useTreeState(props);
// Get props for the menu element
let ref = React.useRef();
let { menuProps } = useMenu(props, state, ref);
return (
<ul
{...menuProps}
ref={ref}
style={{
margin: 0,
padding: 0,
listStyle: 'none',
width: 150
}}
>
{[...state.collection].map((item) => (
item.type === 'section'
? <MenuSection key={item.key} section={item} state={state} />
: <MenuItem key={item.key} item={item} state={state} />
))}
</ul>
);
}
import {useTreeState} from 'react-stately';
import {useMenu} from 'react-aria';
function Menu(props) {
// Create menu state based on the incoming props
let state = useTreeState(props);
// Get props for the menu element
let ref = React.useRef();
let { menuProps } = useMenu(props, state, ref);
return (
<ul
{...menuProps}
ref={ref}
style={{
margin: 0,
padding: 0,
listStyle: 'none',
width: 150
}}
>
{[...state.collection].map((item) => (
item.type === 'section'
? (
<MenuSection
key={item.key}
section={item}
state={state}
/>
)
: (
<MenuItem
key={item.key}
item={item}
state={state}
/>
)
))}
</ul>
);
}
import {useTreeState} from 'react-stately';
import {useMenu} from 'react-aria';
function Menu(props) {
// Create menu state based on the incoming props
let state =
useTreeState(props);
// Get props for the menu element
let ref = React
.useRef();
let { menuProps } =
useMenu(
props,
state,
ref
);
return (
<ul
{...menuProps}
ref={ref}
style={{
margin: 0,
padding: 0,
listStyle:
'none',
width: 150
}}
>
{[
...state
.collection
].map((item) => (
item.type ===
'section'
? (
<MenuSection
key={item
.key}
section={item}
state={state}
/>
)
: (
<MenuItem
key={item
.key}
item={item}
state={state}
/>
)
))}
</ul>
);
}
MenuItem#
Now let's implement MenuItem
. This is built using useMenuItem
,
and the state
object passed via props from Menu
.
import {useMenuItem} from 'react-aria';
function MenuItem({ item, state }) {
// Get props for the menu item element
let ref = React.useRef();
let { menuItemProps, isFocused, isSelected, isDisabled } = useMenuItem(
{ key: item.key },
state,
ref
);
return (
<li
{...menuItemProps}
ref={ref}
style={{
background: isFocused ? 'gray' : 'transparent',
color: isDisabled ? 'gray' : isFocused ? 'white' : 'black',
padding: '2px 5px',
outline: 'none',
cursor: 'default',
display: 'flex',
justifyContent: 'space-between'
}}
>
{item.rendered}
{isSelected && <span aria-hidden="true">✅</span>}
</li>
);
}
import {useMenuItem} from 'react-aria';
function MenuItem({ item, state }) {
// Get props for the menu item element
let ref = React.useRef();
let { menuItemProps, isFocused, isSelected, isDisabled } =
useMenuItem({ key: item.key }, state, ref);
return (
<li
{...menuItemProps}
ref={ref}
style={{
background: isFocused ? 'gray' : 'transparent',
color: isDisabled
? 'gray'
: isFocused
? 'white'
: 'black',
padding: '2px 5px',
outline: 'none',
cursor: 'default',
display: 'flex',
justifyContent: 'space-between'
}}
>
{item.rendered}
{isSelected && <span aria-hidden="true">✅</span>}
</li>
);
}
import {useMenuItem} from 'react-aria';
function MenuItem(
{ item, state }
) {
// Get props for the menu item element
let ref = React
.useRef();
let {
menuItemProps,
isFocused,
isSelected,
isDisabled
} = useMenuItem(
{ key: item.key },
state,
ref
);
return (
<li
{...menuItemProps}
ref={ref}
style={{
background:
isFocused
? 'gray'
: 'transparent',
color: isDisabled
? 'gray'
: isFocused
? 'white'
: 'black',
padding:
'2px 5px',
outline: 'none',
cursor:
'default',
display: 'flex',
justifyContent:
'space-between'
}}
>
{item.rendered}
{isSelected && (
<span aria-hidden="true">
✅
</span>
)}
</li>
);
}
Now we can render a simple menu with actionable items:
<MenuButton label="Actions" onAction={alert}>
<Item key="copy">Copy</Item>
<Item key="cut">Cut</Item>
<Item key="paste">Paste</Item>
</MenuButton>
<MenuButton label="Actions" onAction={alert}>
<Item key="copy">Copy</Item>
<Item key="cut">Cut</Item>
<Item key="paste">Paste</Item>
</MenuButton>
<MenuButton
label="Actions"
onAction={alert}
>
<Item key="copy">
Copy
</Item>
<Item key="cut">
Cut
</Item>
<Item key="paste">
Paste
</Item>
</MenuButton>
Popover#
The Popover
component is used to contain the menu.
It can be shared between many other components, including ComboBox,
Select, Dialog, and others.
See useOverlayTrigger for more examples of popovers.
Show code
import {DismissButton, FocusScope, useOverlay} from 'react-aria';
function Popover(props) {
let ref = React.useRef();
let {
popoverRef = ref,
isOpen,
onClose,
children
} = props;
// Handle events that should cause the popup to close,
// e.g. blur, clicking outside, or pressing the escape key.
let { overlayProps } = useOverlay({
isOpen,
onClose,
shouldCloseOnBlur: true,
isDismissable: true
}, popoverRef);
// Add a hidden <DismissButton> component at the end of the popover
// to allow screen reader users to dismiss the popup easily.
return (
<FocusScope restoreFocus>
<div
{...overlayProps}
ref={popoverRef}
style={{
position: 'absolute',
minWidth: '100%',
border: '1px solid gray',
background: 'lightgray',
marginTop: 4
}}
>
{children}
<DismissButton onDismiss={onClose} />
</div>
</FocusScope>
);
}
import {
DismissButton,
FocusScope,
useOverlay
} from 'react-aria';
function Popover(props) {
let ref = React.useRef();
let {
popoverRef = ref,
isOpen,
onClose,
children
} = props;
// Handle events that should cause the popup to close,
// e.g. blur, clicking outside, or pressing the escape key.
let { overlayProps } = useOverlay({
isOpen,
onClose,
shouldCloseOnBlur: true,
isDismissable: true
}, popoverRef);
// Add a hidden <DismissButton> component at the end of the popover
// to allow screen reader users to dismiss the popup easily.
return (
<FocusScope restoreFocus>
<div
{...overlayProps}
ref={popoverRef}
style={{
position: 'absolute',
minWidth: '100%',
border: '1px solid gray',
background: 'lightgray',
marginTop: 4
}}
>
{children}
<DismissButton onDismiss={onClose} />
</div>
</FocusScope>
);
}
import {
DismissButton,
FocusScope,
useOverlay
} from 'react-aria';
function Popover(props) {
let ref = React
.useRef();
let {
popoverRef = ref,
isOpen,
onClose,
children
} = props;
// Handle events that should cause the popup to close,
// e.g. blur, clicking outside, or pressing the escape key.
let { overlayProps } =
useOverlay({
isOpen,
onClose,
shouldCloseOnBlur:
true,
isDismissable: true
}, popoverRef);
// Add a hidden <DismissButton> component at the end of the popover
// to allow screen reader users to dismiss the popup easily.
return (
<FocusScope
restoreFocus
>
<div
{...overlayProps}
ref={popoverRef}
style={{
position:
'absolute',
minWidth:
'100%',
border:
'1px solid gray',
background:
'lightgray',
marginTop: 4
}}
>
{children}
<DismissButton
onDismiss={onClose}
/>
</div>
</FocusScope>
);
}
Button#
The Button
component is used in the above example to toggle the menu. It is built using the useButton hook, and can be shared with many other components.
Show code
import {useButton} from 'react-aria';
function Button(props) {
let ref = props.buttonRef;
let { buttonProps } = useButton(props, ref);
return (
<button {...buttonProps} ref={ref} style={props.style}>
{props.children}
</button>
);
}
import {useButton} from 'react-aria';
function Button(props) {
let ref = props.buttonRef;
let { buttonProps } = useButton(props, ref);
return (
<button {...buttonProps} ref={ref} style={props.style}>
{props.children}
</button>
);
}
import {useButton} from 'react-aria';
function Button(props) {
let ref =
props.buttonRef;
let { buttonProps } =
useButton(
props,
ref
);
return (
<button
{...buttonProps}
ref={ref}
style={props.style}
>
{props.children}
</button>
);
}
Styled examples#
Dynamic collections#
Menu
follows the Collection Components API, accepting both static and dynamic collections.
The examples above show static collections, which can be used when the full list of options is known ahead of time. Dynamic collections,
as shown below, can be used when the options come from an external data source such as an API call, or update over time.
As seen below, an iterable list of options is passed to the ComboBox using the items
prop. Each item accepts a key
prop, which
is passed to the onSelectionChange
handler to identify the selected item. Alternatively, if the item objects contain an id
property,
as shown in the example below, then this is used automatically and a key
prop is not required.
function Example() {
let items = [
{id: 1, name: 'New'},
{id: 2, name: 'Open'},
{id: 3, name: 'Close'},
{id: 4, name: 'Save'},
{id: 5, name: 'Duplicate'},
{id: 6, name: 'Rename'},
{id: 7, name: 'Move'}
];
return (
<MenuButton label="Actions" items={items} onAction={alert}>
{(item) => <Item>{item.name}</Item>}
</MenuButton>
);
}
function Example() {
let items = [
{ id: 1, name: 'New' },
{ id: 2, name: 'Open' },
{ id: 3, name: 'Close' },
{ id: 4, name: 'Save' },
{ id: 5, name: 'Duplicate' },
{ id: 6, name: 'Rename' },
{ id: 7, name: 'Move' }
];
return (
<MenuButton
label="Actions"
items={items}
onAction={alert}
>
{(item) => <Item>{item.name}</Item>}
</MenuButton>
);
}
function Example() {
let items = [
{
id: 1,
name: 'New'
},
{
id: 2,
name: 'Open'
},
{
id: 3,
name: 'Close'
},
{
id: 4,
name: 'Save'
},
{
id: 5,
name: 'Duplicate'
},
{
id: 6,
name: 'Rename'
},
{
id: 7,
name: 'Move'
}
];
return (
<MenuButton
label="Actions"
items={items}
onAction={alert}
>
{(item) => (
<Item>
{item.name}
</Item>
)}
</MenuButton>
);
}
Selection#
Menu supports multiple selection modes. By default, selection is disabled, however this can be changed using the selectionMode
prop.
Use defaultSelectedKeys
to provide a default set of selected items (uncontrolled) and selectedKeys
to set the selected items (controlled). The value of the selected keys must match the key
prop of the items.
See the react-stately
Selection docs for more details.
function Example() {
let [selected, setSelected] = React.useState(new Set(['sidebar', 'console']));
return (
<>
<MenuButton
label="View"
selectionMode="multiple"
selectedKeys={selected}
onSelectionChange={setSelected}
>
<Item key="sidebar">Sidebar</Item>
<Item key="searchbar">Searchbar</Item>
<Item key="tools">Tools</Item>
<Item key="console">Console</Item>
</MenuButton>
<p>Current selection (controlled): {[...selected].join(', ')}</p>
</>
);
}
function Example() {
let [selected, setSelected] = React.useState(
new Set(['sidebar', 'console'])
);
return (
<>
<MenuButton
label="View"
selectionMode="multiple"
selectedKeys={selected}
onSelectionChange={setSelected}
>
<Item key="sidebar">Sidebar</Item>
<Item key="searchbar">Searchbar</Item>
<Item key="tools">Tools</Item>
<Item key="console">Console</Item>
</MenuButton>
<p>
Current selection (controlled):{' '}
{[...selected].join(', ')}
</p>
</>
);
}
function Example() {
let [
selected,
setSelected
] = React.useState(
new Set([
'sidebar',
'console'
])
);
return (
<>
<MenuButton
label="View"
selectionMode="multiple"
selectedKeys={selected}
onSelectionChange={setSelected}
>
<Item key="sidebar">
Sidebar
</Item>
<Item key="searchbar">
Searchbar
</Item>
<Item key="tools">
Tools
</Item>
<Item key="console">
Console
</Item>
</MenuButton>
<p>
Current selection
(controlled):
{' '}
{[...selected]
.join(', ')}
</p>
</>
);
}
Sections#
Menu supports sections with separators and headings in order to group options. Sections can be used by wrapping groups of Items in a Section
component. Each Section
takes a title
and key
prop.
To implement sections, implement the ListBoxSection
component referenced above
using the useMenuSection
hook. It will include four extra elements:
an <li>
between the sections to represent the separator, an <li>
to contain the heading <span>
element, and a
<ul>
to contain the child items. This structure is necessary to ensure HTML
semantics are correct.
import {useMenuSection, useSeparator} from 'react-aria';
function MenuSection({ section, state, onAction }) {
let { itemProps, headingProps, groupProps } = useMenuSection({
heading: section.rendered,
'aria-label': section['aria-label']
});
let { separatorProps } = useSeparator({
elementType: 'li'
});
// If the section is not the first, add a separator element.
// The heading is rendered inside an <li> element, which contains
// a <ul> with the child items.
return (
<>
{section.key !== state.collection.getFirstKey() &&
(
<li
{...separatorProps}
style={{
borderTop: '1px solid gray',
margin: '2px 5px'
}}
/>
)}
<li {...itemProps}>
{section.rendered &&
(
<span
{...headingProps}
style={{
fontWeight: 'bold',
fontSize: '1.1em',
padding: '2px 5px'
}}
>
{section.rendered}
</span>
)}
<ul
{...groupProps}
style={{
padding: 0,
listStyle: 'none'
}}
>
{[...section.childNodes].map((node) => (
<MenuItem
key={node.key}
item={node}
state={state}
onAction={onAction}
/>
))}
</ul>
</li>
</>
);
}
import {useMenuSection, useSeparator} from 'react-aria';
function MenuSection({ section, state, onAction }) {
let { itemProps, headingProps, groupProps } =
useMenuSection({
heading: section.rendered,
'aria-label': section['aria-label']
});
let { separatorProps } = useSeparator({
elementType: 'li'
});
// If the section is not the first, add a separator element.
// The heading is rendered inside an <li> element, which contains
// a <ul> with the child items.
return (
<>
{section.key !== state.collection.getFirstKey() &&
(
<li
{...separatorProps}
style={{
borderTop: '1px solid gray',
margin: '2px 5px'
}}
/>
)}
<li {...itemProps}>
{section.rendered &&
(
<span
{...headingProps}
style={{
fontWeight: 'bold',
fontSize: '1.1em',
padding: '2px 5px'
}}
>
{section.rendered}
</span>
)}
<ul
{...groupProps}
style={{
padding: 0,
listStyle: 'none'
}}
>
{[...section.childNodes].map((node) => (
<MenuItem
key={node.key}
item={node}
state={state}
onAction={onAction}
/>
))}
</ul>
</li>
</>
);
}
import {
useMenuSection,
useSeparator
} from 'react-aria';
function MenuSection(
{
section,
state,
onAction
}
) {
let {
itemProps,
headingProps,
groupProps
} = useMenuSection({
heading:
section.rendered,
'aria-label':
section[
'aria-label'
]
});
let {
separatorProps
} = useSeparator({
elementType: 'li'
});
// If the section is not the first, add a separator element.
// The heading is rendered inside an <li> element, which contains
// a <ul> with the child items.
return (
<>
{section.key !==
state
.collection
.getFirstKey() &&
(
<li
{...separatorProps}
style={{
borderTop:
'1px solid gray',
margin:
'2px 5px'
}}
/>
)}
<li {...itemProps}>
{section
.rendered &&
(
<span
{...headingProps}
style={{
fontWeight:
'bold',
fontSize:
'1.1em',
padding:
'2px 5px'
}}
>
{section
.rendered}
</span>
)}
<ul
{...groupProps}
style={{
padding: 0,
listStyle:
'none'
}}
>
{[
...section
.childNodes
].map(
(node) => (
<MenuItem
key={node
.key}
item={node}
state={state}
onAction={onAction}
/>
)
)}
</ul>
</li>
</>
);
}
Static items#
With this in place, we can now render a static menu with multiple sections:
import {Section} from 'react-stately';
<MenuButton label="Actions" onAction={alert}>
<Section title="Styles">
<Item key="bold">Bold</Item>
<Item key="underline">Underline</Item>
</Section>
<Section title="Align">
<Item key="left">Left</Item>
<Item key="middle">Middle</Item>
<Item key="right">Right</Item>
</Section>
</MenuButton>
import {Section} from 'react-stately';
<MenuButton label="Actions" onAction={alert}>
<Section title="Styles">
<Item key="bold">Bold</Item>
<Item key="underline">Underline</Item>
</Section>
<Section title="Align">
<Item key="left">Left</Item>
<Item key="middle">Middle</Item>
<Item key="right">Right</Item>
</Section>
</MenuButton>
import {Section} from 'react-stately';
<MenuButton
label="Actions"
onAction={alert}
>
<Section title="Styles">
<Item key="bold">
Bold
</Item>
<Item key="underline">
Underline
</Item>
</Section>
<Section title="Align">
<Item key="left">
Left
</Item>
<Item key="middle">
Middle
</Item>
<Item key="right">
Right
</Item>
</Section>
</MenuButton>
Dynamic items#
The above example shows sections with static items. Sections can also be populated from a heirarchical data structure.
Similarly to the props on Menu, <Section>
takes an array of data using the items
prop.
function Example() {
let [selected, setSelected] = React.useState(new Set([1,3]));
let openWindows = [
{
name: 'Left Panel',
id: 'left',
children: [
{id: 1, name: 'Final Copy (1)'}
]
},
{
name: 'Right Panel',
id: 'right',
children: [
{id: 2, name: 'index.ts'},
{id: 3, name: 'package.json'},
{id: 4, name: 'license.txt'}
]
}
];
return (
<MenuButton
label="Window"
items={openWindows}
selectionMode="multiple"
selectedKeys={selected}
onSelectionChange={setSelected}>
{item => (
<Section items={item.children} title={item.name}>
{item => <Item>{item.name}</Item>}
</Section>
)}
</MenuButton>
);
}
function Example() {
let [selected, setSelected] = React.useState(
new Set([1, 3])
);
let openWindows = [
{
name: 'Left Panel',
id: 'left',
children: [
{ id: 1, name: 'Final Copy (1)' }
]
},
{
name: 'Right Panel',
id: 'right',
children: [
{ id: 2, name: 'index.ts' },
{ id: 3, name: 'package.json' },
{ id: 4, name: 'license.txt' }
]
}
];
return (
<MenuButton
label="Window"
items={openWindows}
selectionMode="multiple"
selectedKeys={selected}
onSelectionChange={setSelected}
>
{(item) => (
<Section items={item.children} title={item.name}>
{(item) => <Item>{item.name}</Item>}
</Section>
)}
</MenuButton>
);
}
function Example() {
let [
selected,
setSelected
] = React.useState(
new Set([1, 3])
);
let openWindows = [
{
name: 'Left Panel',
id: 'left',
children: [
{
id: 1,
name:
'Final Copy (1)'
}
]
},
{
name:
'Right Panel',
id: 'right',
children: [
{
id: 2,
name:
'index.ts'
},
{
id: 3,
name:
'package.json'
},
{
id: 4,
name:
'license.txt'
}
]
}
];
return (
<MenuButton
label="Window"
items={openWindows}
selectionMode="multiple"
selectedKeys={selected}
onSelectionChange={setSelected}
>
{(item) => (
<Section
items={item
.children}
title={item
.name}
>
{(item) => (
<Item>
{item.name}
</Item>
)}
</Section>
)}
</MenuButton>
);
}
Accessibility#
Sections without a title
must provide an aria-label
for accessibility.
Complex menu items#
By default, menu items that only contain text will be labeled by the contents of the item.
For items that have more complex content (e.g. icons, multiple lines of text, keyboard shortcuts, etc.),
use labelProps
, descriptionProps
, and keyboardShortcutProps
from useMenuItem
as needed to apply to the main text element of the menu item, its description, and keyboard
shortcut text. This improves screen reader announcement.
NOTE: menu items cannot contain interactive content (e.g. buttons, checkboxes, etc.).
To implement this, we'll update the MenuItem
component to apply the ARIA properties
returned by useMenuItem
to the appropriate
elements. In this example, we'll pull them out of props.children
and use React.cloneElement
to apply the props, but you may want to use a more robust approach (e.g. context).
function MenuItem({item, state}) {
// Get props for the menu item element and child elements
let ref = React.useRef();
let {
menuItemProps,
labelProps,
descriptionProps,
keyboardShortcutProps,
isFocused
} = useMenuItem({key: item.key}, state, ref);
// Pull out the three expected children. We will clone them
// and add the necessary props for accessibility.
let [title, description, shortcut] = item.rendered;
return (
<li
{...menuItemProps}
ref={ref}
style={{
background: isFocused ? 'gray' : 'transparent',
color: isFocused ? 'white' : null,
padding: '2px 5px',
outline: 'none',
cursor: 'default',
display: 'flex',
alignItems: 'center',
justifyContent: 'space-between'
}}>
<div>
{React.cloneElement(title, labelProps)}
{React.cloneElement(description, descriptionProps)}
</div>
{React.cloneElement(shortcut, keyboardShortcutProps)}
</li>
);
}
<MenuButton label="Actions" onAction={alert}>
<Item textValue="Copy" key="copy">
<div><strong>Copy</strong></div>
<div>Copy the selected text</div>
<kbd>⌘C</kbd>
</Item>
<Item textValue="Cut" key="cut">
<div><strong>Cut</strong></div>
<div>Cut the selected text</div>
<kbd>⌘X</kbd>
</Item>
<Item textValue="Paste" key="paste">
<div><strong>Paste</strong></div>
<div>Paste the copied text</div>
<kbd>⌘V</kbd>
</Item>
</MenuButton>
function MenuItem({ item, state }) {
// Get props for the menu item element and child elements
let ref = React.useRef();
let {
menuItemProps,
labelProps,
descriptionProps,
keyboardShortcutProps,
isFocused
} = useMenuItem({ key: item.key }, state, ref);
// Pull out the three expected children. We will clone them
// and add the necessary props for accessibility.
let [title, description, shortcut] = item.rendered;
return (
<li
{...menuItemProps}
ref={ref}
style={{
background: isFocused ? 'gray' : 'transparent',
color: isFocused ? 'white' : null,
padding: '2px 5px',
outline: 'none',
cursor: 'default',
display: 'flex',
alignItems: 'center',
justifyContent: 'space-between'
}}
>
<div>
{React.cloneElement(title, labelProps)}
{React.cloneElement(description, descriptionProps)}
</div>
{React.cloneElement(shortcut, keyboardShortcutProps)}
</li>
);
}
<MenuButton label="Actions" onAction={alert}>
<Item textValue="Copy" key="copy">
<div>
<strong>Copy</strong>
</div>
<div>Copy the selected text</div>
<kbd>⌘C</kbd>
</Item>
<Item textValue="Cut" key="cut">
<div>
<strong>Cut</strong>
</div>
<div>Cut the selected text</div>
<kbd>⌘X</kbd>
</Item>
<Item textValue="Paste" key="paste">
<div>
<strong>Paste</strong>
</div>
<div>Paste the copied text</div>
<kbd>⌘V</kbd>
</Item>
</MenuButton>
function MenuItem(
{ item, state }
) {
// Get props for the menu item element and child elements
let ref = React
.useRef();
let {
menuItemProps,
labelProps,
descriptionProps,
keyboardShortcutProps,
isFocused
} = useMenuItem(
{ key: item.key },
state,
ref
);
// Pull out the three expected children. We will clone them
// and add the necessary props for accessibility.
let [
title,
description,
shortcut
] = item.rendered;
return (
<li
{...menuItemProps}
ref={ref}
style={{
background:
isFocused
? 'gray'
: 'transparent',
color: isFocused
? 'white'
: null,
padding:
'2px 5px',
outline: 'none',
cursor:
'default',
display: 'flex',
alignItems:
'center',
justifyContent:
'space-between'
}}
>
<div>
{React
.cloneElement(
title,
labelProps
)}
{React
.cloneElement(
description,
descriptionProps
)}
</div>
{React
.cloneElement(
shortcut,
keyboardShortcutProps
)}
</li>
);
}
<MenuButton
label="Actions"
onAction={alert}
>
<Item
textValue="Copy"
key="copy"
>
<div>
<strong>
Copy
</strong>
</div>
<div>
Copy the selected
text
</div>
<kbd>⌘C</kbd>
</Item>
<Item
textValue="Cut"
key="cut"
>
<div>
<strong>
Cut
</strong>
</div>
<div>
Cut the selected
text
</div>
<kbd>⌘X</kbd>
</Item>
<Item
textValue="Paste"
key="paste"
>
<div>
<strong>
Paste
</strong>
</div>
<div>
Paste the copied
text
</div>
<kbd>⌘V</kbd>
</Item>
</MenuButton>
Disabled items#
useMenu
supports marking items as disabled using the disabledKeys
prop. Each key in this list
corresponds with the key
prop passed to the Item
component, or automatically derived from the values passed
to the items
prop. See Collections for more details.
Disabled items are not focusable or keyboard navigable, and do not trigger onAction
or onSelectionChange
.
The isDisabled
property returned by useMenuItem
can be used to style the item appropriately.
<MenuButton label="Actions" onAction={alert} disabledKeys={['paste']}>
<Item key="copy">Copy</Item>
<Item key="cut">Cut</Item>
<Item key="paste">Paste</Item>
</MenuButton>
<MenuButton
label="Actions"
onAction={alert}
disabledKeys={['paste']}
>
<Item key="copy">Copy</Item>
<Item key="cut">Cut</Item>
<Item key="paste">Paste</Item>
</MenuButton>
<MenuButton
label="Actions"
onAction={alert}
disabledKeys={[
'paste'
]}
>
<Item key="copy">
Copy
</Item>
<Item key="cut">
Cut
</Item>
<Item key="paste">
Paste
</Item>
</MenuButton>
Controlled open state#
The open state of the menu can be controlled via the defaultOpen
and isOpen
props
function Example() {
let [open, setOpen] = React.useState(false);
return (
<>
<p>Menu is {open ? 'open' : 'closed'}</p>
<MenuButton
label="View"
isOpen={open}
onOpenChange={setOpen}>
<Item key="side">Side bar</Item>
<Item key="options">Page options</Item>
<Item key="edit">Edit Panel</Item>
</MenuButton>
</>
);
}
function Example() {
let [open, setOpen] = React.useState(false);
return (
<>
<p>Menu is {open ? 'open' : 'closed'}</p>
<MenuButton
label="View"
isOpen={open}
onOpenChange={setOpen}>
<Item key="side">Side bar</Item>
<Item key="options">Page options</Item>
<Item key="edit">Edit Panel</Item>
</MenuButton>
</>
);
}
function Example() {
let [open, setOpen] =
React.useState(
false
);
return (
<>
<p>
Menu is {open
? 'open'
: 'closed'}
</p>
<MenuButton
label="View"
isOpen={open}
onOpenChange={setOpen}
>
<Item key="side">
Side bar
</Item>
<Item key="options">
Page options
</Item>
<Item key="edit">
Edit Panel
</Item>
</MenuButton>
</>
);
}
Internationalization#
useMenu
handles some aspects of internationalization automatically.
For example, type to select is implemented with an
Intl.Collator
for internationalized string matching. You are responsible for localizing all menu item labels for
content that is passed into the menu.
RTL#
In right-to-left languages, the menu button should be mirrored. The arrow should be on the left, and the label should be on the right. In addition, the content of menu items should flip. Ensure that your CSS accounts for this.