text: function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }
  
  function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
  
  function _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; }
  
  function _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }
  
  function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
  
  function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
  
  function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
  
  function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
  
  function _iterableToArrayLimit(arr, i) { var _i = arr && (typeof Symbol !== "undefined" && arr[Symbol.iterator] || arr["@@iterator"]); if (_i == null) return; var _arr = []; var _n = true; var _d = false; var _s, _e; try { for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
  
  function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
  
  /**
   * Copyright IBM Corp. 2016, 2018
   *
   * This source code is licensed under the Apache-2.0 license found in the
   * LICENSE file in the root directory of this source tree.
   */
  import PropTypes from 'prop-types';
  import React, { useState, useRef } from 'react';
  import classNames from 'classnames';
  import { settings } from 'carbon-components';
  import { selectorTabbable } from '../../internal/keyboard/navigation';
  import useIsomorphicEffect from '../../internal/useIsomorphicEffect';
  var prefix = settings.prefix;
  /**
   * Determine if the node within the provided ref contains content that is tabbable.
   */
  
  function useTabbableContent(ref) {
    var _useState = useState(false),
        _useState2 = _slicedToArray(_useState, 2),
        hasTabbableContent = _useState2[0],
        setHasTabbableContent = _useState2[1];
  
    useIsomorphicEffect(function () {
      if (ref.current) {
        setHasTabbableContent(ref.current.querySelector(selectorTabbable));
      }
    });
    return hasTabbableContent;
  }
  
  var TabContent = function TabContent(props) {
    var className = props.className,
        selected = props.selected,
        children = props.children,
        other = _objectWithoutProperties(props, ["className", "selected", "children"]);
  
    var tabContentClasses = classNames("".concat(prefix, "--tab-content"), _defineProperty({}, className, className));
    var ref = useRef(null);
    var hasTabbableContent = useTabbableContent(ref);
    return /*#__PURE__*/React.createElement("div", _extends({
      role: "tabpanel"
    }, other, {
      className: tabContentClasses,
      selected: selected,
      hidden: !selected,
      ref: ref,
      tabIndex: hasTabbableContent ? undefined : 0
    }), children);
  };
  
  TabContent.propTypes = {
    /**
     * Pass in content to render inside of the TabContent
     */
    children: PropTypes.node,
  
    /**
     * Provide a className for the tab content container
     */
    className: PropTypes.string,
  
    /**
     * Specify whether the TabContent is selected
     */
    selected: PropTypes.bool
  };
  TabContent.defaultProps = {
    selected: false
  };
  export default TabContent;