text: "use strict";
  
  var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard");
  
  var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
  
  Object.defineProperty(exports, "__esModule", {
    value: true
  });
  exports.default = void 0;
  
  var _extends2 = _interopRequireDefault(require("@babel/runtime/helpers/extends"));
  
  var _objectWithoutPropertiesLoose2 = _interopRequireDefault(require("@babel/runtime/helpers/objectWithoutPropertiesLoose"));
  
  var React = _interopRequireWildcard(require("react"));
  
  var _reactIs = require("react-is");
  
  var _propTypes = _interopRequireDefault(require("prop-types"));
  
  var _clsx = _interopRequireDefault(require("clsx"));
  
  var _utils = require("@material-ui/utils");
  
  var _unstyled = require("@material-ui/unstyled");
  
  var _experimentalStyled = _interopRequireDefault(require("../styles/experimentalStyled"));
  
  var _useThemeProps = _interopRequireDefault(require("../styles/useThemeProps"));
  
  var _Typography = _interopRequireDefault(require("../Typography"));
  
  var _BreadcrumbCollapsed = _interopRequireDefault(require("./BreadcrumbCollapsed"));
  
  var _breadcrumbsClasses = _interopRequireWildcard(require("./breadcrumbsClasses"));
  
  var _jsxRuntime = require("react/jsx-runtime");
  
  const overridesResolver = (props, styles) => {
    return (0, _utils.deepmerge)({
      [`& .${_breadcrumbsClasses.default.ol}`]: styles.ol,
      [`& .${_breadcrumbsClasses.default.li}`]: styles.li,
      [`& .${_breadcrumbsClasses.default.separator}`]: styles.separator
    }, styles.root || {});
  };
  
  const useUtilityClasses = styleProps => {
    const {
      classes
    } = styleProps;
    const slots = {
      root: ['root'],
      li: ['li'],
      ol: ['ol'],
      separator: ['separator']
    };
    return (0, _unstyled.unstable_composeClasses)(slots, _breadcrumbsClasses.getBreadcrumbsUtilityClass, classes);
  };
  
  const BreadcrumbsRoot = (0, _experimentalStyled.default)(_Typography.default, {}, {
    name: 'MuiBreadcrumbs',
    slot: 'Root',
    overridesResolver
  })({});
  const BreadcrumbsOl = (0, _experimentalStyled.default)('ol', {}, {
    name: 'MuiBreadcrumbs',
    slot: 'Ol'
  })({
    display: 'flex',
    flexWrap: 'wrap',
    alignItems: 'center',
    padding: 0,
    margin: 0,
    listStyle: 'none'
  });
  const BreadcrumbsSeparator = (0, _experimentalStyled.default)('li', {}, {
    name: 'MuiBreadcrumbs',
    slot: 'Separator'
  })({
    display: 'flex',
    userSelect: 'none',
    marginLeft: 8,
    marginRight: 8
  });
  
  function insertSeparators(items, className, separator, styleProps) {
    return items.reduce((acc, current, index) => {
      if (index < items.length - 1) {
        acc = acc.concat(current, /*#__PURE__*/(0, _jsxRuntime.jsx)(BreadcrumbsSeparator, {
          "aria-hidden": true,
          className: className,
          styleProps: styleProps,
          children: separator
        }, `separator-${index}`));
      } else {
        acc.push(current);
      }
  
      return acc;
    }, []);
  }
  
  const Breadcrumbs = /*#__PURE__*/React.forwardRef(function Breadcrumbs(inProps, ref) {
    const props = (0, _useThemeProps.default)({
      props: inProps,
      name: 'MuiBreadcrumbs'
    });
    const {
      children,
      className,
      component = 'nav',
      expandText = 'Show path',
      itemsAfterCollapse = 1,
      itemsBeforeCollapse = 1,
      maxItems = 8,
      separator = '/'
    } = props,
          other = (0, _objectWithoutPropertiesLoose2.default)(props, ["children", "className", "component", "expandText", "itemsAfterCollapse", "itemsBeforeCollapse", "maxItems", "separator"]);
    const [expanded, setExpanded] = React.useState(false);
    const styleProps = (0, _extends2.default)({}, props, {
      component,
      expanded,
      expandText,
      itemsAfterCollapse,
      itemsBeforeCollapse,
      maxItems,
      separator
    });
    const classes = useUtilityClasses(styleProps);
    const listRef = React.useRef(null);
  
    const renderItemsBeforeAndAfter = allItems => {
      const handleClickExpand = () => {
        setExpanded(true); // The clicked element received the focus but gets removed from the DOM.
        // Let's keep the focus in the component after expanding.
        // Moving it to the <ol> or <nav> does not cause any announcement in NVDA.
        // By moving it to some link/button at least we have some announcement.
  
        const focusable = listRef.current.querySelector('a[href],button,[tabindex]');
  
        if (focusable) {
          focusable.focus();
        }
      }; // This defends against someone passing weird input, to ensure that if all
      // items would be shown anyway, we just show all items without the EllipsisItem
  
  
      if (itemsBeforeCollapse + itemsAfterCollapse >= allItems.length) {
        if (process.env.NODE_ENV !== 'production') {
          console.error(['Material-UI: You have provided an invalid combination of props to the Breadcrumbs.', `itemsAfterCollapse={${itemsAfterCollapse}} + itemsBeforeCollapse={${itemsBeforeCollapse}} >= maxItems={${maxItems}}`].join('\n'));
        }
  
        return allItems;
      }
  
      return [...allItems.slice(0, itemsBeforeCollapse), /*#__PURE__*/(0, _jsxRuntime.jsx)(_BreadcrumbCollapsed.default, {
        "aria-label": expandText,
        onClick: handleClickExpand
      }, "ellipsis"), ...allItems.slice(allItems.length - itemsAfterCollapse, allItems.length)];
    };
  
    const allItems = React.Children.toArray(children).filter(child => {
      if (process.env.NODE_ENV !== 'production') {
        if ((0, _reactIs.isFragment)(child)) {
          console.error(["Material-UI: The Breadcrumbs component doesn't accept a Fragment as a child.", 'Consider providing an array instead.'].join('\n'));
        }
      }
  
      return /*#__PURE__*/React.isValidElement(child);
    }).map((child, index) => /*#__PURE__*/(0, _jsxRuntime.jsx)("li", {
      className: classes.li,
      children: child
    }, `child-${index}`));
    return /*#__PURE__*/(0, _jsxRuntime.jsx)(BreadcrumbsRoot, (0, _extends2.default)({
      ref: ref,
      component: component,
      color: "textSecondary",
      className: (0, _clsx.default)(classes.root, className),
      styleProps: styleProps
    }, other, {
      children: /*#__PURE__*/(0, _jsxRuntime.jsx)(BreadcrumbsOl, {
        className: classes.ol,
        ref: listRef,
        styleProps: styleProps,
        children: insertSeparators(expanded || maxItems && allItems.length <= maxItems ? allItems : renderItemsBeforeAndAfter(allItems), classes.separator, separator, styleProps)
      })
    }));
  });
  process.env.NODE_ENV !== "production" ? Breadcrumbs.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: _propTypes.default.node,
  
    /**
     * Override or extend the styles applied to the component.
     */
    classes: _propTypes.default.object,
  
    /**
     * @ignore
     */
    className: _propTypes.default.string,
  
    /**
     * The component used for the root node.
     * Either a string to use a HTML element or a component.
     */
    component: _propTypes.default.elementType,
  
    /**
     * Override the default label for the expand button.
     *
     * For localization purposes, you can use the provided [translations](/guides/localization/).
     * @default 'Show path'
     */
    expandText: _propTypes.default.string,
  
    /**
     * If max items is exceeded, the number of items to show after the ellipsis.
     * @default 1
     */
    itemsAfterCollapse: _utils.integerPropType,
  
    /**
     * If max items is exceeded, the number of items to show before the ellipsis.
     * @default 1
     */
    itemsBeforeCollapse: _utils.integerPropType,
  
    /**
     * Specifies the maximum number of breadcrumbs to display. When there are more
     * than the maximum number, only the first `itemsBeforeCollapse` and last `itemsAfterCollapse`
     * will be shown, with an ellipsis in between.
     * @default 8
     */
    maxItems: _utils.integerPropType,
  
    /**
     * Custom separator node.
     * @default '/'
     */
    separator: _propTypes.default.node,
  
    /**
     * The system prop that allows defining system overrides as well as additional CSS styles.
     */
    sx: _propTypes.default.object
  } : void 0;
  var _default = Breadcrumbs;
  exports.default = _default;