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Viewing file:     Breadcrumbs.js (7.35 KB)      -rw-r--r--

"use strict";

var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard");

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = exports.styles = void 0;

var _extends2 = _interopRequireDefault(require("@babel/runtime/helpers/extends"));

var _toConsumableArray2 = _interopRequireDefault(require("@babel/runtime/helpers/toConsumableArray"));

var _objectWithoutProperties2 = _interopRequireDefault(require("@babel/runtime/helpers/objectWithoutProperties"));

var React = _interopRequireWildcard(require("react"));

var _reactIs = require("react-is");

var _propTypes = _interopRequireDefault(require("prop-types"));

var _clsx = _interopRequireDefault(require("clsx"));

var _withStyles = _interopRequireDefault(require("../styles/withStyles"));

var _Typography = _interopRequireDefault(require("../Typography"));

var _BreadcrumbCollapsed = _interopRequireDefault(require("./BreadcrumbCollapsed"));

var styles = {
  /* Styles applied to the root element. */
  root: {},

  /* Styles applied to the ol element. */
  ol: {
    display: 'flex',
    flexWrap: 'wrap',
    alignItems: 'center',
    padding: 0,
    margin: 0,
    listStyle: 'none'
  },

  /* Styles applied to the li element. */
  li: {},

  /* Styles applied to the separator element. */
  separator: {
    display: 'flex',
    userSelect: 'none',
    marginLeft: 8,
    marginRight: 8
  }
};
exports.styles = styles;

function insertSeparators(items, className, separator) {
  return items.reduce(function (acc, current, index) {
    if (index < items.length - 1) {
      acc = acc.concat(current, /*#__PURE__*/React.createElement("li", {
        "aria-hidden": true,
        key: "separator-".concat(index),
        className: className
      }, separator));
    } else {
      acc.push(current);
    }

    return acc;
  }, []);
}

var Breadcrumbs = /*#__PURE__*/React.forwardRef(function Breadcrumbs(props, ref) {
  var children = props.children,
      classes = props.classes,
      className = props.className,
      _props$component = props.component,
      Component = _props$component === void 0 ? 'nav' : _props$component,
      _props$expandText = props.expandText,
      expandText = _props$expandText === void 0 ? 'Show path' : _props$expandText,
      _props$itemsAfterColl = props.itemsAfterCollapse,
      itemsAfterCollapse = _props$itemsAfterColl === void 0 ? 1 : _props$itemsAfterColl,
      _props$itemsBeforeCol = props.itemsBeforeCollapse,
      itemsBeforeCollapse = _props$itemsBeforeCol === void 0 ? 1 : _props$itemsBeforeCol,
      _props$maxItems = props.maxItems,
      maxItems = _props$maxItems === void 0 ? 8 : _props$maxItems,
      _props$separator = props.separator,
      separator = _props$separator === void 0 ? '/' : _props$separator,
      other = (0, _objectWithoutProperties2.default)(props, ["children", "classes", "className", "component", "expandText", "itemsAfterCollapse", "itemsBeforeCollapse", "maxItems", "separator"]);

  var _React$useState = React.useState(false),
      expanded = _React$useState[0],
      setExpanded = _React$useState[1];

  var renderItemsBeforeAndAfter = function renderItemsBeforeAndAfter(allItems) {
    var handleClickExpand = function handleClickExpand(event) {
      setExpanded(true); // The clicked element received the focus but gets removed from the DOM.
      // Let's keep the focus in the component after expanding.

      var focusable = event.currentTarget.parentNode.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={".concat(itemsAfterCollapse, "} + itemsBeforeCollapse={").concat(itemsBeforeCollapse, "} >= maxItems={").concat(maxItems, "}")].join('\n'));
      }

      return allItems;
    }

    return [].concat((0, _toConsumableArray2.default)(allItems.slice(0, itemsBeforeCollapse)), [/*#__PURE__*/React.createElement(_BreadcrumbCollapsed.default, {
      "aria-label": expandText,
      key: "ellipsis",
      onClick: handleClickExpand
    })], (0, _toConsumableArray2.default)(allItems.slice(allItems.length - itemsAfterCollapse, allItems.length)));
  };

  var allItems = React.Children.toArray(children).filter(function (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(function (child, index) {
    return /*#__PURE__*/React.createElement("li", {
      className: classes.li,
      key: "child-".concat(index)
    }, child);
  });
  return /*#__PURE__*/React.createElement(_Typography.default, (0, _extends2.default)({
    ref: ref,
    component: Component,
    color: "textSecondary",
    className: (0, _clsx.default)(classes.root, className)
  }, other), /*#__PURE__*/React.createElement("ol", {
    className: classes.ol
  }, insertSeparators(expanded || maxItems && allItems.length <= maxItems ? allItems : renderItemsBeforeAndAfter(allItems), classes.separator, separator)));
});
process.env.NODE_ENV !== "production" ? Breadcrumbs.propTypes = {
  // ----------------------------- Warning --------------------------------
  // | These PropTypes are generated from the TypeScript type definitions |
  // |     To update them edit the d.ts file and run "yarn proptypes"     |
  // ----------------------------------------------------------------------

  /**
   * The breadcrumb children.
   */
  children: _propTypes.default.node,

  /**
   * Override or extend the styles applied to the component.
   * See [CSS API](#css) below for more details.
   */
  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
  /* @typescript-to-proptypes-ignore */
  .elementType,

  /**
   * Override the default label for the expand button.
   *
   * For localization purposes, you can use the provided [translations](/guides/localization/).
   */
  expandText: _propTypes.default.string,

  /**
   * If max items is exceeded, the number of items to show after the ellipsis.
   */
  itemsAfterCollapse: _propTypes.default.number,

  /**
   * If max items is exceeded, the number of items to show before the ellipsis.
   */
  itemsBeforeCollapse: _propTypes.default.number,

  /**
   * 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.
   */
  maxItems: _propTypes.default.number,

  /**
   * Custom separator node.
   */
  separator: _propTypes.default.node
} : void 0;

var _default = (0, _withStyles.default)(styles, {
  name: 'MuiBreadcrumbs'
})(Breadcrumbs);

exports.default = _default;