content: import React from 'react';
  import PropTypes from 'prop-types';
  import { mergeClasses } from '@material-ui/styles';
  import SelectInput from './SelectInput';
  import formControlState from '../FormControl/formControlState';
  import withFormControlContext from '../FormControl/withFormControlContext';
  import withStyles from '../styles/withStyles';
  import ArrowDropDownIcon from '../internal/svg-icons/ArrowDropDown';
  import Input from '../Input';
  import { styles as nativeSelectStyles } from '../NativeSelect/NativeSelect';
  import NativeSelectInput from '../NativeSelect/NativeSelectInput';
  
  export const styles = nativeSelectStyles;
  
  const defaultInput = <Input />;
  
  const Select = React.forwardRef(function Select(props, ref) {
    const {
      autoWidth = false,
      children,
      classes,
      displayEmpty = false,
      IconComponent = ArrowDropDownIcon,
      input = defaultInput,
      inputProps,
      MenuProps,
      muiFormControl,
      multiple = false,
      native = false,
      onClose,
      onOpen,
      open,
      renderValue,
      SelectDisplayProps,
      variant,
      ...other
    } = props;
  
    const inputComponent = native ? NativeSelectInput : SelectInput;
    const fcs = formControlState({
      props,
      muiFormControl,
      states: ['variant'],
    });
  
    return React.cloneElement(input, {
      // Most of the logic is implemented in `SelectInput`.
      // The `Select` component is a simple API wrapper to expose something better to play with.
      inputComponent,
      inputProps: {
        children,
        IconComponent,
        variant: fcs.variant,
        type: undefined, // We render a select. We can ignore the type provided by the `Input`.
        multiple,
        ...(native
          ? {}
          : {
              autoWidth,
              displayEmpty,
              MenuProps,
              onClose,
              onOpen,
              open,
              renderValue,
              SelectDisplayProps,
            }),
        ...inputProps,
        classes: inputProps
          ? mergeClasses({
              baseClasses: classes,
              newClasses: inputProps.classes,
              Component: Select,
            })
          : classes,
        ...(input ? input.props.inputProps : {}),
      },
      ref,
      ...other,
    });
  });
  
  Select.propTypes = {
    /**
     * If true, the width of the popover will automatically be set according to the items inside the
     * menu, otherwise it will be at least the width of the select input.
     */
    autoWidth: PropTypes.bool,
    /**
     * The option elements to populate the select with.
     * Can be some `MenuItem` when `native` is false and `option` when `native` is true.
     *
     * ⚠️The `MenuItem` elements **must** be direct descendants when `native` is false.
     */
    children: PropTypes.node,
    /**
     * Override or extend the styles applied to the component.
     * See [CSS API](#css) below for more details.
     */
    classes: PropTypes.object.isRequired,
    /**
     * If `true`, the selected item is displayed even if its value is empty.
     * You can only use it when the `native` property is `false` (default).
     */
    displayEmpty: PropTypes.bool,
    /**
     * The icon that displays the arrow.
     */
    IconComponent: PropTypes.elementType,
    /**
     * An `Input` element; does not have to be a material-ui specific `Input`.
     */
    input: PropTypes.element,
    /**
     * [Attributes](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#Attributes) applied to the `input` element.
     * When `native` is `true`, the attributes are applied on the `select` element.
     */
    inputProps: PropTypes.object,
    /**
     * Properties applied to the [`Menu`](/api/menu/) element.
     */
    MenuProps: PropTypes.object,
    /**
     * @ignore
     * from `withFormControlContext`
     */
    muiFormControl: PropTypes.object,
    /**
     * If true, `value` must be an array and the menu will support multiple selections.
     */
    multiple: PropTypes.bool,
    /**
     * If `true`, the component will be using a native `select` element.
     */
    native: PropTypes.bool,
    /**
     * Callback function fired when a menu item is selected.
     *
     * @param {object} event The event source of the callback.
     * You can pull out the new value by accessing `event.target.value`.
     * @param {object} [child] The react element that was selected when `native` is `false` (default).
     */
    onChange: PropTypes.func,
    /**
     * Callback fired when the component requests to be closed.
     * Use in controlled mode (see open).
     *
     * @param {object} event The event source of the callback
     */
    onClose: PropTypes.func,
    /**
     * Callback fired when the component requests to be opened.
     * Use in controlled mode (see open).
     *
     * @param {object} event The event source of the callback
     */
    onOpen: PropTypes.func,
    /**
     * Control `select` open state.
     * You can only use it when the `native` property is `false` (default).
     */
    open: PropTypes.bool,
    /**
     * Render the selected value.
     * You can only use it when the `native` property is `false` (default).
     *
     * @param {*} value The `value` provided to the component.
     * @returns {ReactElement}
     */
    renderValue: PropTypes.func,
    /**
     * Properties applied to the clickable div element.
     */
    SelectDisplayProps: PropTypes.object,
    /**
     * The input value.
     * This property is required when the `native` property is `false` (default).
     */
    value: PropTypes.any,
    /**
     * The variant to use.
     */
    variant: PropTypes.oneOf(['standard', 'outlined', 'filled']),
  };
  
  Select.muiName = 'Select';
  
  export default withStyles(styles, { name: 'MuiSelect' })(withFormControlContext(Select));
  