import _extends from "@babel/runtime/helpers/extends";
import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/objectWithoutPropertiesLoose";
import React from 'react';
import PropTypes from 'prop-types';
import clsx from 'clsx';
import withStyles from '../styles/withStyles';
import Fade from '../Fade';
export const styles = {
  /* Styles applied to the root element. */
  root: {
    zIndex: -1,
    position: 'fixed',
    right: 0,
    bottom: 0,
    top: 0,
    left: 0,
    backgroundColor: 'rgba(0, 0, 0, 0.5)',
    // Remove grey highlight
    WebkitTapHighlightColor: 'transparent',
    // Disable scroll capabilities.
    touchAction: 'none'
  },

  /* Styles applied to the root element if `invisible={true}`. */
  invisible: {
    backgroundColor: 'transparent'
  }
};
const Backdrop = React.forwardRef(function Backdrop(props, ref) {
  const {
    classes,
    className,
    invisible = false,
    open,
    transitionDuration
  } = props,
        other = _objectWithoutPropertiesLoose(props, ["classes", "className", "invisible", "open", "transitionDuration"]);

  return React.createElement(Fade, _extends({
    in: open,
    timeout: transitionDuration
  }, other), React.createElement("div", {
    className: clsx(classes.root, invisible && classes.invisible, className),
    "aria-hidden": true,
    ref: ref
  }));
});
process.env.NODE_ENV !== "production" ? Backdrop.propTypes = {
  /**
   * 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,

  /**
   * If `true`, the backdrop is invisible.
   * It can be used when rendering a popover or a custom select component.
   */
  invisible: PropTypes.bool,

  /**
   * If `true`, the backdrop is open.
   */
  open: PropTypes.bool.isRequired,

  /**
   * The duration for the transition, in milliseconds.
   * You may specify a single timeout for all transitions, or individually with an object.
   */
  transitionDuration: PropTypes.oneOfType([PropTypes.number, PropTypes.shape({
    enter: PropTypes.number,
    exit: PropTypes.number
  })])
} : void 0;
export default withStyles(styles, {
  name: 'MuiBackdrop'
})(Backdrop);