@elastic/eui
Version:
Elastic UI Component Library
135 lines (130 loc) • 6.42 kB
JavaScript
import _typeof from "@babel/runtime/helpers/typeof";
import _extends from "@babel/runtime/helpers/extends";
import _objectWithoutProperties from "@babel/runtime/helpers/objectWithoutProperties";
var _excluded = ["breadcrumbs", "className", "responsive", "truncate", "max", "type", "lastBreadcrumbIsCurrentPage"];
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
import React, { useMemo } from 'react';
import classNames from 'classnames';
import { useEuiI18n } from '../i18n';
import { useEuiMemoizedStyles, useCurrentEuiBreakpoint } from '../../services';
import { EuiBreadcrumb, EuiBreadcrumbCollapsed } from './breadcrumb';
import { EuiBreadcrumbContent } from './_breadcrumb_content';
import { euiBreadcrumbsListStyles } from './breadcrumbs.styles';
import { jsx as ___EmotionJSX } from "@emotion/react";
var responsiveDefault = {
xs: 1,
s: 2,
m: 4
};
export var EuiBreadcrumbs = function EuiBreadcrumbs(_ref) {
var breadcrumbs = _ref.breadcrumbs,
className = _ref.className,
_ref$responsive = _ref.responsive,
responsive = _ref$responsive === void 0 ? responsiveDefault : _ref$responsive,
_ref$truncate = _ref.truncate,
truncate = _ref$truncate === void 0 ? true : _ref$truncate,
_ref$max = _ref.max,
max = _ref$max === void 0 ? 5 : _ref$max,
_ref$type = _ref.type,
type = _ref$type === void 0 ? 'page' : _ref$type,
_ref$lastBreadcrumbIs = _ref.lastBreadcrumbIsCurrentPage,
lastBreadcrumbIsCurrentPage = _ref$lastBreadcrumbIs === void 0 ? true : _ref$lastBreadcrumbIs,
rest = _objectWithoutProperties(_ref, _excluded);
var ariaLabel = useEuiI18n('euiBreadcrumbs.nav.ariaLabel', 'Breadcrumbs');
var breadcrumbsListStyles = useEuiMemoizedStyles(euiBreadcrumbsListStyles);
var cssBreadcrumbsListStyles = [breadcrumbsListStyles.euiBreadcrumbs__list, truncate && breadcrumbsListStyles.isTruncated];
var responsiveMax = useResponsiveMax(responsive, max);
var visibleBreadcrumbs = useMemo(function () {
var shouldCollapseBreadcrumbs = responsiveMax && breadcrumbs.length > responsiveMax;
return shouldCollapseBreadcrumbs ? limitBreadcrumbs(breadcrumbs, responsiveMax) : breadcrumbs;
}, [breadcrumbs, responsiveMax]);
var breadcrumbChildren = useMemo(function () {
return visibleBreadcrumbs.map(function (breadcrumb, index) {
var _breadcrumb$truncate;
var isFirstBreadcrumb = index === 0;
var isLastBreadcrumb = index === visibleBreadcrumbs.length - 1;
var isOnlyBreadcrumb = visibleBreadcrumbs.length === 1;
var sharedProps = {
type: type,
truncate: (_breadcrumb$truncate = breadcrumb.truncate) !== null && _breadcrumb$truncate !== void 0 ? _breadcrumb$truncate : truncate
};
return breadcrumb.isCollapsedButton ? ___EmotionJSX(EuiBreadcrumbCollapsed, _extends({
key: "collapsed"
}, sharedProps, {
isFirstBreadcrumb: isFirstBreadcrumb
}), ___EmotionJSX(EuiBreadcrumbs, {
breadcrumbs: breadcrumb.overflowBreadcrumbs,
lastBreadcrumbIsCurrentPage: false,
responsive: false,
truncate: false,
max: 0
})) : ___EmotionJSX(EuiBreadcrumb, _extends({
key: index
}, sharedProps), ___EmotionJSX(EuiBreadcrumbContent, _extends({}, breadcrumb, sharedProps, {
isFirstBreadcrumb: isFirstBreadcrumb,
isLastBreadcrumb: isLastBreadcrumb,
isOnlyBreadcrumb: isOnlyBreadcrumb,
highlightLastBreadcrumb: isLastBreadcrumb && lastBreadcrumbIsCurrentPage,
truncateLastBreadcrumb: isLastBreadcrumb && truncate && breadcrumb.truncate == null
})));
});
}, [visibleBreadcrumbs, truncate, type, lastBreadcrumbIsCurrentPage]);
return ___EmotionJSX("nav", _extends({
"aria-label": ariaLabel,
className: classNames('euiBreadcrumbs', className)
}, rest), ___EmotionJSX("ol", {
className: "euiBreadcrumbs__list",
css: cssBreadcrumbsListStyles
}, breadcrumbChildren));
};
export var useResponsiveMax = function useResponsiveMax(responsive, max) {
// Use the default object if they simply passed `true` for responsive
var responsiveObject = _typeof(responsive) === 'object' ? responsive : responsiveDefault;
// The max property collapses any breadcrumbs past the max quantity.
// This is the same behavior we want for responsiveness.
// So calculate the max value based on the combination of `max` and `responsive`
var responsiveMax = max;
// Set the calculated max to the number associated with the currentBreakpoint key if it exists
var currentBreakpoint = useCurrentEuiBreakpoint();
if (responsive && currentBreakpoint && responsiveObject[currentBreakpoint]) {
responsiveMax = responsiveObject[currentBreakpoint];
}
// Final check is to make sure max is used over a larger breakpoint value
if (max && responsiveMax) {
responsiveMax = max < responsiveMax ? max : responsiveMax;
}
return responsiveMax;
};
export var limitBreadcrumbs = function limitBreadcrumbs(breadcrumbs, max) {
var breadcrumbsAtStart = [];
var breadcrumbsAtEnd = [];
var limit = Math.min(max, breadcrumbs.length);
var start = Math.floor(limit / 2);
var overflowBreadcrumbs = breadcrumbs.slice(start, start + breadcrumbs.length - limit);
for (var i = 0; i < limit; i++) {
// We'll alternate with displaying breadcrumbs at the end and at the start, but be biased
// towards breadcrumbs the end so that if max is an odd number, we'll have one more
// breadcrumb visible at the end than at the beginning.
var isEven = i % 2 === 0;
// We're picking breadcrumbs from the front AND the back, so we treat each iteration as a
// half-iteration.
var normalizedIndex = Math.floor(i * 0.5);
var indexOfBreadcrumb = isEven ? breadcrumbs.length - 1 - normalizedIndex : normalizedIndex;
var breadcrumb = breadcrumbs[indexOfBreadcrumb];
if (isEven) {
breadcrumbsAtEnd.unshift(breadcrumb);
} else {
breadcrumbsAtStart.push(breadcrumb);
}
}
return [].concat(breadcrumbsAtStart, [{
isCollapsedButton: true,
overflowBreadcrumbs: overflowBreadcrumbs
}], breadcrumbsAtEnd);
};