@material-ui/core/es/internal/SwitchBase.js

React components that implement Google's Material Design.

import _extends from "@babel/runtime/helpers/esm/extends";
import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/esm/objectWithoutPropertiesLoose";
import React from 'react';
import PropTypes from 'prop-types';
import clsx from 'clsx';
import useFormControl from '../FormControl/useFormControl';
import withStyles from '../styles/withStyles';
import IconButton from '../IconButton';
export const styles = {
  root: {
    padding: 9
  },
  checked: {},
  disabled: {},
  input: {
    cursor: 'inherit',
    position: 'absolute',
    opacity: 0,
    width: '100%',
    height: '100%',
    top: 0,
    left: 0,
    margin: 0,
    padding: 0
  }
};
/**
 * @ignore - internal component.
 */

const SwitchBase = React.forwardRef(function SwitchBase(props, ref) {
  const {
    autoFocus,
    checked: checkedProp,
    checkedIcon,
    classes,
    className: classNameProp,
    defaultChecked,
    disabled: disabledProp,
    icon,
    id,
    inputProps,
    inputRef,
    name,
    onBlur,
    onChange,
    onFocus,
    readOnly,
    required,
    tabIndex,
    type,
    value
  } = props,
        other = _objectWithoutPropertiesLoose(props, ["autoFocus", "checked", "checkedIcon", "classes", "className", "defaultChecked", "disabled", "icon", "id", "inputProps", "inputRef", "name", "onBlur", "onChange", "onFocus", "readOnly", "required", "tabIndex", "type", "value"]);

  const {
    current: isControlled
  } = React.useRef(checkedProp != null);
  const [checkedState, setCheckedState] = React.useState(Boolean(defaultChecked));
  const muiFormControl = useFormControl();

  const handleFocus = event => {
    if (onFocus) {
      onFocus(event);
    }

    if (muiFormControl && muiFormControl.onFocus) {
      muiFormControl.onFocus(event);
    }
  };

  const handleBlur = event => {
    if (onBlur) {
      onBlur(event);
    }

    if (muiFormControl && muiFormControl.onBlur) {
      muiFormControl.onBlur(event);
    }
  };

  const handleInputChange = event => {
    const checked = event.target.checked;

    if (!isControlled) {
      setCheckedState(checked);
    }

    if (onChange) {
      onChange(event, checked);
    }
  };

  let disabled = disabledProp;

  if (muiFormControl) {
    if (typeof disabled === 'undefined') {
      disabled = muiFormControl.disabled;
    }
  }

  const checked = isControlled ? checkedProp : checkedState;
  const hasLabelFor = type === 'checkbox' || type === 'radio';
  return React.createElement(IconButton, _extends({
    component: "span",
    className: clsx(classes.root, classNameProp, checked && classes.checked, disabled && classes.disabled),
    disabled: disabled,
    tabIndex: null,
    role: undefined,
    onFocus: handleFocus,
    onBlur: handleBlur,
    ref: ref
  }, other), checked ? checkedIcon : icon, React.createElement("input", _extends({
    autoFocus: autoFocus,
    checked: checkedProp,
    defaultChecked: defaultChecked,
    className: classes.input,
    disabled: disabled,
    id: hasLabelFor && id,
    name: name,
    onChange: handleInputChange,
    readOnly: readOnly,
    ref: inputRef,
    required: required,
    tabIndex: tabIndex,
    type: type,
    value: value
  }, inputProps)));
}); // NB: If changed, please update Checkbox, Switch and Radio
// so that the API documentation is updated.

process.env.NODE_ENV !== "production" ? SwitchBase.propTypes = {
  /**
   * If `true`, the `input` element will be focused during the first mount.
   */
  autoFocus: PropTypes.bool,

  /**
   * If `true`, the component is checked.
   */
  checked: PropTypes.bool,

  /**
   * The icon to display when the component is checked.
   */
  checkedIcon: PropTypes.node.isRequired,

  /**
   * Override or extend the styles applied to the component.
   * See [CSS API](#css) below for more details.
   */
  classes: PropTypes.object.isRequired,

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

  /**
   * @ignore
   */
  defaultChecked: PropTypes.bool,

  /**
   * If `true`, the switch will be disabled.
   */
  disabled: PropTypes.bool,

  /**
   * The icon to display when the component is unchecked.
   */
  icon: PropTypes.node.isRequired,

  /**
   * The id of the `input` element.
   */
  id: PropTypes.string,

  /**
   * [Attributes](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#Attributes) applied to the `input` element.
   */
  inputProps: PropTypes.object,

  /**
   * This prop can be used to pass a ref callback to the `input` element.
   */
  inputRef: PropTypes.oneOfType([PropTypes.func, PropTypes.object]),

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

  /**
   * @ignore
   */
  onBlur: PropTypes.func,

  /**
   * Callback fired when the state is changed.
   *
   * @param {object} event The event source of the callback.
   * You can pull out the new value by accessing `event.target.checked`.
   * @param {boolean} checked The `checked` value of the switch
   */
  onChange: PropTypes.func,

  /**
   * @ignore
   */
  onFocus: PropTypes.func,

  /**
   * It prevents the user from changing the value of the field
   * (not from interacting with the field).
   */
  readOnly: PropTypes.bool,

  /**
   * If `true`, the `input` element will be required.
   */
  required: PropTypes.bool,

  /**
   * @ignore
   */
  tabIndex: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),

  /**
   * The input component prop `type`.
   */
  type: PropTypes.string.isRequired,

  /**
   * The value of the component.
   */
  value: PropTypes.any
} : void 0;
export default withStyles(styles, {
  name: 'PrivateSwitchBase'
})(SwitchBase);