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Breadcrumb.tsx
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Breadcrumb.tsx
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import * as React from 'react';
import * as PropTypes from 'prop-types';
import classNames from 'classnames';
import toArray from 'rc-util/lib/Children/toArray';
import BreadcrumbItem from './BreadcrumbItem';
import BreadcrumbSeparator from './BreadcrumbSeparator';
import Menu from '../menu';
import { ConfigConsumer, ConfigConsumerProps } from '../config-provider';
import warning from '../_util/warning';
import { Omit } from '../_util/type';
export interface Route {
path: string;
breadcrumbName: string;
children?: Omit<Route, 'children'>[];
}
export interface BreadcrumbProps {
prefixCls?: string;
routes?: Route[];
params?: any;
separator?: React.ReactNode;
itemRender?: (
route: Route,
params: any,
routes: Array<Route>,
paths: Array<string>,
) => React.ReactNode;
style?: React.CSSProperties;
className?: string;
}
function getBreadcrumbName(route: Route, params: any) {
if (!route.breadcrumbName) {
return null;
}
const paramsKeys = Object.keys(params).join('|');
const name = route.breadcrumbName.replace(
new RegExp(`:(${paramsKeys})`, 'g'),
(replacement, key) => params[key] || replacement,
);
return name;
}
function defaultItemRender(route: Route, params: any, routes: Route[], paths: string[]) {
const isLastItem = routes.indexOf(route) === routes.length - 1;
const name = getBreadcrumbName(route, params);
return isLastItem ? <span>{name}</span> : <a href={`#/${paths.join('/')}`}>{name}</a>;
}
function filterFragment(children: any) {
return toArray(children).map((element: any) => {
if (React.isValidElement(element) && element.type === React.Fragment) {
const props: any = element.props;
return props.children;
}
return element;
});
}
export default class Breadcrumb extends React.Component<BreadcrumbProps, any> {
static Item: typeof BreadcrumbItem;
static Separator: typeof BreadcrumbSeparator;
static defaultProps = {
separator: '/',
};
static propTypes = {
prefixCls: PropTypes.string,
separator: PropTypes.node,
routes: PropTypes.array,
};
componentDidMount() {
const { props } = this;
warning(
!('linkRender' in props || 'nameRender' in props),
'Breadcrumb',
'`linkRender` and `nameRender` are removed, please use `itemRender` instead, ' +
'see: https://u.ant.design/item-render.',
);
}
getPath = (path: string, params: any) => {
path = (path || '').replace(/^\//, '');
Object.keys(params).forEach(key => {
path = path.replace(`:${key}`, params[key]);
});
return path;
};
addChildPath = (paths: string[], childPath: string = '', params: any) => {
const originalPaths = [...paths];
const path = this.getPath(childPath, params);
if (path) {
originalPaths.push(path);
}
return originalPaths;
};
genForRoutes = ({
routes = [],
params = {},
separator,
itemRender = defaultItemRender,
}: BreadcrumbProps) => {
const paths: string[] = [];
return routes.map(route => {
const path = this.getPath(route.path, params);
if (path) {
paths.push(path);
}
// generated overlay by route.children
let overlay = null;
if (route.children && route.children.length) {
overlay = (
<Menu>
{route.children.map(child => (
<Menu.Item key={child.breadcrumbName || child.path}>
{itemRender(child, params, routes, this.addChildPath(paths, child.path, params))}
</Menu.Item>
))}
</Menu>
);
}
return (
<BreadcrumbItem overlay={overlay} separator={separator} key={route.breadcrumbName || path}>
{itemRender(route, params, routes, paths)}
</BreadcrumbItem>
);
});
};
renderBreadcrumb = ({ getPrefixCls }: ConfigConsumerProps) => {
let crumbs;
const {
prefixCls: customizePrefixCls,
separator,
style,
className,
routes,
children,
} = this.props;
const prefixCls = getPrefixCls('breadcrumb', customizePrefixCls);
if (routes && routes.length > 0) {
// generated by route
crumbs = this.genForRoutes(this.props);
} else if (children) {
crumbs = React.Children.map(filterFragment(children), (element: any, index) => {
if (!element) {
return element;
}
warning(
element.type &&
(element.type.__ANT_BREADCRUMB_ITEM || element.type.__ANT_BREADCRUMB_SEPARATOR),
'Breadcrumb',
"Only accepts Breadcrumb.Item and Breadcrumb.Separator as it's children",
);
return React.cloneElement(element, {
separator,
key: index, // eslint-disable-line react/no-array-index-key
});
});
}
return (
<div className={classNames(className, prefixCls)} style={style}>
{crumbs}
</div>
);
};
render() {
return <ConfigConsumer>{this.renderBreadcrumb}</ConfigConsumer>;
}
}