@bbc/psammead-navigation

psammead-navigation -

Description

The @bbc/psammead-navigation package is a set of two components, NavigationUl and NavigationLi. They use ul and li HTML elements respectively.

Installation

npm install @bbc/psammead-navigation

Props

Navigation

Argument	Type	Required	Default	Example
children	node	Yes	N/A	<NavigationUl><NavigationLi url="/" script={latin} active="true">Home</NavigationLi><NavigationLi url="/sport" script={latin}>{Sport}</NavigationLi></NavigationUl>
script	object	Yes	N/A	{ canon: { groupA: { fontSize: '28', lineHeight: '32',}, groupB: { fontSize: '32', lineHeight: '36', }, groupD: { fontSize: '44', lineHeight: '48', }, }, trafalgar: { groupA: { fontSize: '20', lineHeight: '24', }, groupB: { fontSize: '24', lineHeight: '28', }, groupD: { fontSize: '32', lineHeight: '36', }, }, }
skipLinkText	string	Yes	N/A	Skip to content
service	string	Yes	N/A	'news'

NavigationUl

Argument	Type	Required	Default	Example
children	node	Yes	N/A	<NavigationLi url="/" script={latin} active="true">Home</NavigationLi><NavigationLi url="/sport" script={latin}>{Sport}</NavigationLi>

NavigationLi

Argument	Type	Required	Default	Example
url	string	Yes	N/A	/sport
script	object	Yes	N/A	{ canon: { groupA: { fontSize: '28', lineHeight: '32',}, groupB: { fontSize: '32', lineHeight: '36', }, groupD: { fontSize: '44', lineHeight: '48', }, }, trafalgar: { groupA: { fontSize: '20', lineHeight: '24', }, groupB: { fontSize: '24', lineHeight: '28', }, groupD: { fontSize: '32', lineHeight: '36', }, }, }
dir	string	No	ltr	rtl
active	boolean	No	false	true
currentPageText	string	No	null	Current page
service	string	Yes	N/A	'news'

Usage

import React from 'react';
import Navigation, {
  NavigationUl,
  NavigationLi,
} from '@bbc/psammead-navigation';
import { latin } from '@bbc/gel-foundations/scripts';

<Navigation script={latin} skipLinkText="Skip to content" service="news">
  <NavigationUl>
    <NavigationLi
      url="/"
      script={latin}
      active="true"
      currentPageText="Current Page"
      service="news"
    >
      Home
    </NavigationLi>
    <NavigationLi url="/sport" script={latin} service="news">
      {Sport}
    </NavigationLi>
    <NavigationLi url="/weather" script={latin} service="news">
      {Weather}
    </NavigationLi>
  </NavigationUl>
</Navigation>;

When to use this component

The Navigation is designed to show a navigation bar on index pages, which will show all sections on a site. If there are too many items to fit on one line, the items will wrap to the next lines.

Accessibility notes

The Navigation has a navigation landmark to provide a way to identify links that are intended to be used for navigation.

It includes a "skip link" giving users the option to skip to the main content before the assistive technology reads the full content of the interjection.

We have added the role list and listitem to the NavigationUl and NavigationList respectively, due to a VoiceOver bug to reinstate the list semantics.

We have also added visually hidden text to let the user know which item in the Navigation is the current page. Note the use of visually hidden text here is due to lack of support at this time for the aria-current page attribute. Also note the use of role="text" to stop splitting in VoiceOver.

Contributing

Psammead is completely open source. We are grateful for any contributions, whether they be new components, bug fixes or general improvements. Please see our primary contributing guide which can be found at the root of the Psammead respository.

Code of Conduct

We welcome feedback and help on this work. By participating in this project, you agree to abide by the code of conduct. Please take a moment to read it.

License

Psammead is Apache 2.0 licensed.