@mui/material/modern/Accordion/Accordion.js

import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/esm/objectWithoutPropertiesLoose";
import _extends from "@babel/runtime/helpers/esm/extends";
const _excluded = ["children", "className", "defaultExpanded", "disabled", "disableGutters", "expanded", "onChange", "square", "TransitionComponent", "TransitionProps"];
import * as React from 'react';
import { isFragment } from 'react-is';
import PropTypes from 'prop-types';
import clsx from 'clsx';
import { chainPropTypes } from '@mui/utils';
import { unstable_composeClasses as composeClasses } from '@mui/base';
import styled from '../styles/styled';
import useThemeProps from '../styles/useThemeProps';
import Collapse from '../Collapse';
import Paper from '../Paper';
import AccordionContext from './AccordionContext';
import useControlled from '../utils/useControlled';
import accordionClasses, { getAccordionUtilityClass } from './accordionClasses';
import { jsx as _jsx } from "react/jsx-runtime";
import { jsxs as _jsxs } from "react/jsx-runtime";

const useUtilityClasses = ownerState => {
  const {
    classes,
    square,
    expanded,
    disabled,
    disableGutters
  } = ownerState;
  const slots = {
    root: ['root', !square && 'rounded', expanded && 'expanded', disabled && 'disabled', !disableGutters && 'gutters'],
    region: ['region']
  };
  return composeClasses(slots, getAccordionUtilityClass, classes);
};

const AccordionRoot = styled(Paper, {
  name: 'MuiAccordion',
  slot: 'Root',
  overridesResolver: (props, styles) => {
    const {
      ownerState
    } = props;
    return [{
      [`& .${accordionClasses.region}`]: styles.region
    }, styles.root, !ownerState.square && styles.rounded, !ownerState.disableGutters && styles.gutters];
  }
})(({
  theme
}) => {
  const transition = {
    duration: theme.transitions.duration.shortest
  };
  return {
    position: 'relative',
    transition: theme.transitions.create(['margin'], transition),
    overflowAnchor: 'none',
    // Keep the same scrolling position
    '&:before': {
      position: 'absolute',
      left: 0,
      top: -1,
      right: 0,
      height: 1,
      content: '""',
      opacity: 1,
      backgroundColor: (theme.vars || theme).palette.divider,
      transition: theme.transitions.create(['opacity', 'background-color'], transition)
    },
    '&:first-of-type': {
      '&:before': {
        display: 'none'
      }
    },
    [`&.${accordionClasses.expanded}`]: {
      '&:before': {
        opacity: 0
      },
      '&:first-of-type': {
        marginTop: 0
      },
      '&:last-of-type': {
        marginBottom: 0
      },
      '& + &': {
        '&:before': {
          display: 'none'
        }
      }
    },
    [`&.${accordionClasses.disabled}`]: {
      backgroundColor: (theme.vars || theme).palette.action.disabledBackground
    }
  };
}, ({
  theme,
  ownerState
}) => _extends({}, !ownerState.square && {
  borderRadius: 0,
  '&:first-of-type': {
    borderTopLeftRadius: (theme.vars || theme).shape.borderRadius,
    borderTopRightRadius: (theme.vars || theme).shape.borderRadius
  },
  '&:last-of-type': {
    borderBottomLeftRadius: (theme.vars || theme).shape.borderRadius,
    borderBottomRightRadius: (theme.vars || theme).shape.borderRadius,
    // Fix a rendering issue on Edge
    '@supports (-ms-ime-align: auto)': {
      borderBottomLeftRadius: 0,
      borderBottomRightRadius: 0
    }
  }
}, !ownerState.disableGutters && {
  [`&.${accordionClasses.expanded}`]: {
    margin: '16px 0'
  }
}));
const Accordion = /*#__PURE__*/React.forwardRef(function Accordion(inProps, ref) {
  const props = useThemeProps({
    props: inProps,
    name: 'MuiAccordion'
  });

  const {
    children: childrenProp,
    className,
    defaultExpanded = false,
    disabled = false,
    disableGutters = false,
    expanded: expandedProp,
    onChange,
    square = false,
    TransitionComponent = Collapse,
    TransitionProps
  } = props,
        other = _objectWithoutPropertiesLoose(props, _excluded);

  const [expanded, setExpandedState] = useControlled({
    controlled: expandedProp,
    default: defaultExpanded,
    name: 'Accordion',
    state: 'expanded'
  });
  const handleChange = React.useCallback(event => {
    setExpandedState(!expanded);

    if (onChange) {
      onChange(event, !expanded);
    }
  }, [expanded, onChange, setExpandedState]);
  const [summary, ...children] = React.Children.toArray(childrenProp);
  const contextValue = React.useMemo(() => ({
    expanded,
    disabled,
    disableGutters,
    toggle: handleChange
  }), [expanded, disabled, disableGutters, handleChange]);

  const ownerState = _extends({}, props, {
    square,
    disabled,
    disableGutters,
    expanded
  });

  const classes = useUtilityClasses(ownerState);
  return /*#__PURE__*/_jsxs(AccordionRoot, _extends({
    className: clsx(classes.root, className),
    ref: ref,
    ownerState: ownerState,
    square: square
  }, other, {
    children: [/*#__PURE__*/_jsx(AccordionContext.Provider, {
      value: contextValue,
      children: summary
    }), /*#__PURE__*/_jsx(TransitionComponent, _extends({
      in: expanded,
      timeout: "auto"
    }, TransitionProps, {
      children: /*#__PURE__*/_jsx("div", {
        "aria-labelledby": summary.props.id,
        id: summary.props['aria-controls'],
        role: "region",
        className: classes.region,
        children: children
      })
    }))]
  }));
});
process.env.NODE_ENV !== "production" ? Accordion.propTypes
/* remove-proptypes */
= {
  // ----------------------------- Warning --------------------------------
  // | These PropTypes are generated from the TypeScript type definitions |
  // |     To update them edit the d.ts file and run "yarn proptypes"     |
  // ----------------------------------------------------------------------

  /**
   * The content of the component.
   */
  children: chainPropTypes(PropTypes.node.isRequired, props => {
    const summary = React.Children.toArray(props.children)[0];

    if (isFragment(summary)) {
      return new Error("MUI: The Accordion doesn't accept a Fragment as a child. " + 'Consider providing an array instead.');
    }

    if (! /*#__PURE__*/React.isValidElement(summary)) {
      return new Error('MUI: Expected the first child of Accordion to be a valid element.');
    }

    return null;
  }),

  /**
   * Override or extend the styles applied to the component.
   */
  classes: PropTypes.object,

  /**
   * @ignore
   */
  className: PropTypes.string,

  /**
   * If `true`, expands the accordion by default.
   * @default false
   */
  defaultExpanded: PropTypes.bool,

  /**
   * If `true`, the component is disabled.
   * @default false
   */
  disabled: PropTypes.bool,

  /**
   * If `true`, it removes the margin between two expanded accordion items and the increase of height.
   * @default false
   */
  disableGutters: PropTypes.bool,

  /**
   * If `true`, expands the accordion, otherwise collapse it.
   * Setting this prop enables control over the accordion.
   */
  expanded: PropTypes.bool,

  /**
   * Callback fired when the expand/collapse state is changed.
   *
   * @param {React.SyntheticEvent} event The event source of the callback. **Warning**: This is a generic event not a change event.
   * @param {boolean} expanded The `expanded` state of the accordion.
   */
  onChange: PropTypes.func,

  /**
   * If `true`, rounded corners are disabled.
   * @default false
   */
  square: PropTypes.bool,

  /**
   * The system prop that allows defining system overrides as well as additional CSS styles.
   */
  sx: PropTypes.oneOfType([PropTypes.arrayOf(PropTypes.oneOfType([PropTypes.func, PropTypes.object, PropTypes.bool])), PropTypes.func, PropTypes.object]),

  /**
   * The component used for the transition.
   * [Follow this guide](/material-ui/transitions/#transitioncomponent-prop) to learn more about the requirements for this component.
   * @default Collapse
   */
  TransitionComponent: PropTypes.elementType,

  /**
   * Props applied to the transition element.
   * By default, the element is based on this [`Transition`](http://reactcommunity.org/react-transition-group/transition/) component.
   */
  TransitionProps: PropTypes.object
} : void 0;
export default Accordion;