# Click-Away Listener

- Page: https://jiguang132.com/resources/material-ui/docs/click-away-listener
- Resource: Material UI (https://jiguang132.com/resources/material-ui.md)
- All guides: https://jiguang132.com/resources/material-ui/docs.md

Respond to pointer events outside a native child, including portal use cases.

This guide covers Material UI Core with the default Emotion engine; extensions and additional demos are explicitly classified.

## Use case and business boundary

Click-away does not supply Escape handling or focus management; leading and trailing event choices differ.

## Native composition and scope

`ClickAwayListener`

Preserve native Material UI composition and types; do not substitute JGuang UI/Base UI/Radix APIs. Example entries are not extra components.

## Native installation and initialization

```bash
npm install @mui/material@9.4.0 @emotion/react@11.14.0 @emotion/styled@11.14.1
```

Use native npm and Emotion, not an invented JGuang UI Registry URL. Place examples inside native ThemeProvider; choose CssBaseline or ScopedCssBaseline for the project. Inspect React, existing providers, lockfile and SSR first. Never overwrite files or conceal peer conflicts. This batch verified React 19.2.8; React 18 and below require matching react-is. See the included bilingual setup guide.

## Practical native parameters

These selected parameters are not a flattened universal API. Preserve the native declaring owner, slot structure, nullable values and generics.

| Owner.prop | Practical role | Declaration source |
| --- | --- | --- |
| `ClickAwayListener.onClickAway` | Receive an outside-click event; update host open state explicitly. | `ClickAwayListener` |
| `ClickAwayListener.mouseEvent` | Choose the native outside-pointer event phase; false disables that listener. | `ClickAwayListener` |
| `ClickAwayListener.touchEvent` | Native outside-touch event phase; false disables that listener. | `ClickAwayListener` |
| `ClickAwayListener.disableReactTree` | Base click-away detection on DOM rather than React-tree containment. | `ClickAwayListener` |

## Runnable native examples

Machine keys select example entries, not universal variant props. Native demo JSX/data stay unchanged; JGuang-authored acceptance fixtures are explicitly labelled.

- Introduction · `ClickAway` · upstream native demo
- Use with Portal · `PortalClickAway` · upstream native demo
- Listening for leading events · `LeadingClickAway` · upstream native demo

## Actual usage example

Unmodified pinned native demo; copy its required local helper files together.

```tsx
import * as React from 'react';
import Box from '@mui/material/Box';
import ClickAwayListener from '@mui/material/ClickAwayListener';
import { SxProps } from '@mui/system';

export default function ClickAway() {
  const [open, setOpen] = React.useState(false);

  const handleClick = () => {
    setOpen((prev) => !prev);
  };

  const handleClickAway = () => {
    setOpen(false);
  };

  const styles: SxProps = {
    position: 'absolute',
    top: 28,
    right: 0,
    left: 0,
    zIndex: 1,
    border: '1px solid',
    p: 1,
    bgcolor: 'background.paper',
  };

  return (
    <ClickAwayListener onClickAway={handleClickAway}>
      <Box sx={{ position: 'relative' }}>
        <button type="button" onClick={handleClick}>
          Open menu dropdown
        </button>
        {open ? (
          <Box sx={styles}>
            Click me, I will stay visible until you click outside.
          </Box>
        ) : null}
      </Box>
    </ClickAwayListener>
  );
}

```

## Example dependency boundaries

`react`, `@mui/material/Box`, `@mui/material/ClickAwayListener`, `@mui/system`, `@mui/material/Portal`

Direct Icons/System/Utils example imports require their matching 9.4.0 packages. Relative data/helpers are part of the example closure, not extra components. Remote images and simulated operations do not supply a backend.

## Pinned upstream API metadata reference

These tables retain the upstream metadata, not a newly inferred generic type system. Conditional generics, inherited props and callback details are defined by the source declarations below. Theme defaults may override metadata defaults.

### ClickAwayListener

```tsx
import ClickAwayListener from '@mui/material/ClickAwayListener';
import { ClickAwayListener } from '@mui/material';
```

| Prop | Required | Upstream metadata type / constraint | Metadata default |
| --- | --- | --- | --- |
| `children` | yes | `element` | — |
| `onClickAway` | yes | `func` | — |
| `disableReactTree` | no | `bool` | `false` |
| `mouseEvent` | no | `'onClick' \| 'onMouseDown' \| 'onMouseUp' \| 'onPointerDown' \| 'onPointerUp' \| false` | `'onClick'` |
| `touchEvent` | no | `'onTouchEnd' \| 'onTouchStart' \| false` | `'onTouchEnd'` |


## Native source declarations

Declarations/imports are extracted from pinned source without flattening unions or external inheritance. Original English comments/types are source reference, not a claim of translated upstream prose. Shared types stay in their native packages.

### vendor/src/ClickAwayListener/ClickAwayListener.tsx

```ts
import * as React from 'react';

import PropTypes from 'prop-types';

import contains from '@mui/utils/contains';

import ownerDocument from '@mui/utils/ownerDocument';

import useForkRef from '@mui/utils/useForkRef';

import useEventCallback from '@mui/utils/useEventCallback';

import elementAcceptingRef from '@mui/utils/elementAcceptingRef';

import exactProp from '@mui/utils/exactProp';

import getReactElementRef from '@mui/utils/getReactElementRef';

type ClickAwayMouseEventHandler =
  'onClick' | 'onMouseDown' | 'onMouseUp' | 'onPointerDown' | 'onPointerUp';

type ClickAwayTouchEventHandler = 'onTouchStart' | 'onTouchEnd';

export interface ClickAwayListenerProps {
  /**
   * The wrapped element.
   */
  children: React.ReactElement<any>;
  /**
   * If `true`, the React tree is ignored and only the DOM tree is considered.
   * This prop changes how portaled elements are handled.
   * @default false
   */
  disableReactTree?: boolean | undefined;
  /**
   * The mouse event to listen to. You can disable the listener by providing `false`.
   * @default 'onClick'
   */
  mouseEvent?: ClickAwayMouseEventHandler | false | undefined;
  /**
   * Callback fired when a "click away" event is detected.
   */
  onClickAway: (event: MouseEvent | TouchEvent) => void;
  /**
   * The touch event to listen to. You can disable the listener by providing `false`.
   * @default 'onTouchEnd'
   */
  touchEvent?: ClickAwayTouchEventHandler | false | undefined;
}
```

## Post-install acceptance

Run strict types, production build and real interactions. Check keyboard labels/focus, disabled/error/read-only semantics where natively supported, both themes, narrow screens and reduced motion. Verify callbacks against the real host data; do not declare installation complete from copying a prompt. Initialization fixtures also require server HTML and warning-free hydration.

## Source and license

https://github.com/mui/material-ui/tree/809a7717b4c050ba3f69b75300689f07c050a16e

MIT · @mui/material@9.4.0. Vendor originals and license are preserved. Full original upstream prose remains in vendor/docs and is not represented as fully translated.

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