Breadcrumb面包屑

显示当前页面在系统层级结构中的位置，并能向上返回。

何时使用

• 当系统拥有超过两级以上的层级结构时；

• 当需要告知用户『你在哪里』时；

• 当需要向上导航的功能时。

代码演示

基本

最简单的用法。

import { Breadcrumb } from 'choerodon-ui';
ReactDOM.render(
  <Breadcrumb>
    <Breadcrumb.Item>Home</Breadcrumb.Item>
    <Breadcrumb.Item><a href="">Application Center</a></Breadcrumb.Item>
    <Breadcrumb.Item><a href="">Application List</a></Breadcrumb.Item>
    <Breadcrumb.Item>An Application</Breadcrumb.Item>
  </Breadcrumb>,
  mountNode);

react-router

和 react-router@2 react-router@3 进行结合使用。

import { Router, Route, Link, hashHistory } from 'react-router';
import { Breadcrumb, Alert } from 'choerodon-ui';
const Apps = () => (
  <ul className="app-list">
    <li>
      <Link to="/apps/1">Application1</Link>：<Link to="/apps/1/detail">Detail</Link>
    </li>
    <li>
      <Link to="/apps/2">Application2</Link>：<Link to="/apps/2/detail">Detail</Link>
    </li>
  </ul>
);
const Home = ({ routes, params, children }) => (
  <div className="demo">
    <div className="demo-nav">
      <Link to="/">Home</Link>
      <Link to="/apps">Application List</Link>
    </div>
    {children || 'Home Page'}
    <Alert style={{ margin: '16px 0' }} message="Click the navigation above to switch:" />
    <Breadcrumb routes={routes} params={params} />
  </div>
);
ReactDOM.render(
  <Router history={hashHistory}>
    <Route name="home" breadcrumbName="Home" path="/" component={Home}>
      <Route name="apps" breadcrumbName="Application List" path="apps" component={Apps}>
        <Route name="app" breadcrumbName="Application:id" path=":id">
          <Route name="detail" breadcrumbName="Detail" path="detail" />
        </Route>
      </Route>
    </Route>
  </Router>,
  mountNode);

.demo {
  margin: 16px;
}
.demo-nav {
  height: 30px;
  line-height: 30px;
  margin-bottom: 16px;
  background: #f8f8f8;
}
.demo-nav a {
  line-height: 30px;
  padding: 0 8px;
}
.app-list {
  margin-top: 16px;
}

分隔符

使用 separator=">" 可以自定义分隔符。

import { Breadcrumb } from 'choerodon-ui';
ReactDOM.render(
  <Breadcrumb separator=">">
    <Breadcrumb.Item>Home</Breadcrumb.Item>
    <Breadcrumb.Item href="">Application Center</Breadcrumb.Item>
    <Breadcrumb.Item href="">Application List</Breadcrumb.Item>
    <Breadcrumb.Item>An Application</Breadcrumb.Item>
  </Breadcrumb>,
  mountNode);

带有图标的

图标放在文字前面。

import { Breadcrumb, Icon } from 'choerodon-ui';
ReactDOM.render(
  <Breadcrumb>
    <Breadcrumb.Item href="">
      <Icon type="home" />
    </Breadcrumb.Item>
    <Breadcrumb.Item href="">
      <Icon type="user" />
      <span>Application List</span>
    </Breadcrumb.Item>
    <Breadcrumb.Item>
      Application
    </Breadcrumb.Item>
  </Breadcrumb>,
  mountNode);

其它路由

和 react-router@4，或其他路由进行结合使用。

import { HashRouter as Router, Route, Switch, Link, withRouter } from 'react-router-dom';
import { Breadcrumb, Alert } from 'choerodon-ui';
const Apps = () => (
  <ul className="app-list">
    <li>
      <Link to="/apps/1">Application1</Link>：<Link to="/apps/1/detail">Detail</Link>
    </li>
    <li>
      <Link to="/apps/2">Application2</Link>：<Link to="/apps/2/detail">Detail</Link>
    </li>
  </ul>
);
const breadcrumbNameMap = {
  '/apps': 'Application List',
  '/apps/1': 'Application1',
  '/apps/2': 'Application2',
  '/apps/1/detail': 'Detail',
  '/apps/2/detail': 'Detail',
};
const Home = withRouter((props) => {
  const { location } = props;
  const pathSnippets = location.pathname.split('/').filter(i => i);
  const extraBreadcrumbItems = pathSnippets.map((_, index) => {
    const url = `/${pathSnippets.slice(0, index + 1).join('/')}`;
    return (
      <Breadcrumb.Item key={url}>
        <Link to={url}>
          {breadcrumbNameMap[url]}
        </Link>
      </Breadcrumb.Item>
    );
  });
  const breadcrumbItems = [(
    <Breadcrumb.Item key="home">
      <Link to="/">Home</Link>
    </Breadcrumb.Item>
  )].concat(extraBreadcrumbItems);
  return (
    <div className="demo">
      <div className="demo-nav">
        <Link to="/">Home</Link>
        <Link to="/apps">Application List</Link>
      </div>
      <Switch>
        <Route path="/apps" component={Apps} />
        <Route render={() => <span>Home Page</span>} />
      </Switch>
      <Alert style={{ margin: '16px 0' }} message="Click the navigation above to switch:" />
      <Breadcrumb>
        {breadcrumbItems}
      </Breadcrumb>
    </div>
  );
});
ReactDOM.render(
  <Router>
    <Home />
  </Router>,
  mountNode);

.demo {
  margin: 16px;
}
.demo-nav {
  height: 30px;
  line-height: 30px;
  margin-bottom: 16px;
  background: #f8f8f8;
}
.demo-nav a {
  line-height: 30px;
  padding: 0 8px;
}
.app-list {
  margin-top: 16px;
}

API

2.0 之后，linkRender 和 nameRender 被移除，请使用 itemRender 来代替。

和 browserHistory 配合

和 react-router 一起使用时，默认生成的 url 路径是带有 # 的，如果和 browserHistory 一起使用的话，你可以使用 itemRender 属性定义面包屑链接。

import { Link } from 'react-router';
const routes = [{
  path: 'index',
  breadcrumbName: '首页'
}, {
  path: 'first',
  breadcrumbName: '一级面包屑'
}, {
  path: 'second',
  breadcrumbName: '当前页面'
}];
function itemRender(route, params, routes, paths) {
  const last = routes.indexOf(route) === routes.length - 1;
  return last ? <span>{route.breadcrumbName}</span> : <Link to={paths.join('/')}>{route.breadcrumbName}</Link>;
}
return <Breadcrumb itemRender={itemRender} routes={routes}/>;