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Breadcrumbs.js
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Sat, Feb 15, 17:48

Breadcrumbs.js
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import _extends from "@babel/runtime/helpers/esm/extends";
import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/esm/objectWithoutPropertiesLoose";
const _excluded = ["children", "className", "component", "expandText", "itemsAfterCollapse", "itemsBeforeCollapse", "maxItems", "separator"];
import * as React from 'react';
import { isFragment } from 'react-is';
import PropTypes from 'prop-types';
import clsx from 'clsx';
import { integerPropType } from '@mui/utils';
import { unstable_composeClasses as composeClasses } from '@mui/base';
import styled from '../styles/styled';
import useThemeProps from '../styles/useThemeProps';
import Typography from '../Typography';
import BreadcrumbCollapsed from './BreadcrumbCollapsed';
import breadcrumbsClasses, { getBreadcrumbsUtilityClass } from './breadcrumbsClasses';
import { jsx as _jsx } from "react/jsx-runtime";
const useUtilityClasses = ownerState => {
const {
classes
} = ownerState;
const slots = {
root: ['root'],
li: ['li'],
ol: ['ol'],
separator: ['separator']
};
return composeClasses(slots, getBreadcrumbsUtilityClass, classes);
};
const BreadcrumbsRoot = styled(Typography, {
name: 'MuiBreadcrumbs',
slot: 'Root',
overridesResolver: (props, styles) => {
return [{
[`& .${breadcrumbsClasses.li}`]: styles.li
}, styles.root];
}
})({});
const BreadcrumbsOl = styled('ol', {
name: 'MuiBreadcrumbs',
slot: 'Ol',
overridesResolver: (props, styles) => styles.ol
})({
display: 'flex',
flexWrap: 'wrap',
alignItems: 'center',
padding: 0,
margin: 0,
listStyle: 'none'
});
const BreadcrumbsSeparator = styled('li', {
name: 'MuiBreadcrumbs',
slot: 'Separator',
overridesResolver: (props, styles) => styles.separator
})({
display: 'flex',
userSelect: 'none',
marginLeft: 8,
marginRight: 8
});
function insertSeparators(items, className, separator, ownerState) {
return items.reduce((acc, current, index) => {
if (index < items.length - 1) {
acc = acc.concat(current, /*#__PURE__*/_jsx(BreadcrumbsSeparator, {
"aria-hidden": true,
className: className,
ownerState: ownerState,
children: separator
}, `separator-${index}`));
} else {
acc.push(current);
}
return acc;
}, []);
}
const Breadcrumbs = /*#__PURE__*/React.forwardRef(function Breadcrumbs(inProps, ref) {
const props = useThemeProps({
props: inProps,
name: 'MuiBreadcrumbs'
});
const {
children,
className,
component = 'nav',
expandText = 'Show path',
itemsAfterCollapse = 1,
itemsBeforeCollapse = 1,
maxItems = 8,
separator = '/'
} = props,
other = _objectWithoutPropertiesLoose(props, _excluded);
const [expanded, setExpanded] = React.useState(false);
const ownerState = _extends({}, props, {
component,
expanded,
expandText,
itemsAfterCollapse,
itemsBeforeCollapse,
maxItems,
separator
});
const classes = useUtilityClasses(ownerState);
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(['MUI: You have provided an invalid combination of props to the Breadcrumbs.', `itemsAfterCollapse={${itemsAfterCollapse}} + itemsBeforeCollapse={${itemsBeforeCollapse}} >= maxItems={${maxItems}}`].join('\n'));
}
return allItems;
}
return [...allItems.slice(0, itemsBeforeCollapse), /*#__PURE__*/_jsx(BreadcrumbCollapsed, {
"aria-label": expandText,
onClick: handleClickExpand
}, "ellipsis"), ...allItems.slice(allItems.length - itemsAfterCollapse, allItems.length)];
};
const allItems = React.Children.toArray(children).filter(child => {
if (process.env.NODE_ENV !== 'production') {
if (isFragment(child)) {
console.error(["MUI: The Breadcrumbs component doesn't accept a Fragment as a child.", 'Consider providing an array instead.'].join('\n'));
}
}
return /*#__PURE__*/React.isValidElement(child);
}).map((child, index) => /*#__PURE__*/_jsx("li", {
className: classes.li,
children: child
}, `child-${index}`));
return /*#__PURE__*/_jsx(BreadcrumbsRoot, _extends({
ref: ref,
component: component,
color: "text.secondary",
className: clsx(classes.root, className),
ownerState: ownerState
}, other, {
children: /*#__PURE__*/_jsx(BreadcrumbsOl, {
className: classes.ol,
ref: listRef,
ownerState: ownerState,
children: insertSeparators(expanded || maxItems && allItems.length <= maxItems ? allItems : renderItemsBeforeAndAfter(allItems), classes.separator, separator, ownerState)
})
}));
});
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.node,
/**
* Override or extend the styles applied to the component.
*/
classes: PropTypes.object,
/**
* @ignore
*/
className: PropTypes.string,
/**
* The component used for the root node.
* Either a string to use a HTML element or a component.
*/
component: PropTypes.elementType,
/**
* Override the default label for the expand button.
*
* For localization purposes, you can use the provided [translations](/material-ui/guides/localization/).
* @default 'Show path'
*/
expandText: PropTypes.string,
/**
* If max items is exceeded, the number of items to show after the ellipsis.
* @default 1
*/
itemsAfterCollapse: integerPropType,
/**
* If max items is exceeded, the number of items to show before the ellipsis.
* @default 1
*/
itemsBeforeCollapse: 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: integerPropType,
/**
* Custom separator node.
* @default '/'
*/
separator: PropTypes.node,
/**
* The system prop that allows defining system overrides as well as additional CSS styles.
*/
sx: PropTypes.oneOfType([PropTypes.arrayOf(PropTypes.oneOfType([PropTypes.func, PropTypes.object, PropTypes.bool])), PropTypes.func, PropTypes.object])
} : void 0;
export default Breadcrumbs;

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