@royalnavy/react-component-library

A collection of react components and helpers to assist in building applications for the Royal Navy

Usage no npm install needed!

<script type="module">
  import royalnavyReactComponentLibrary from 'https://cdn.skypack.dev/@royalnavy/react-component-library';
</script>

README

React Component Library

A collection of React components written for Royal Navy web applications.

Installation

The Royal Navy React Component Library is available as an NPM package.

// npm
npm install @royalnavy/fonts @royalnavy/react-component-library

// yarn
yarn add @royalnavy/fonts @royalnavy/react-component-library

NOTE: As of 2.16.0 the styled-components package is now a required peerDependency.

Usage

import React from 'react'
import ReactDOM from 'react-dom'
import '@royalnavy/fonts'
import { GlobalStyleProvider, Button } from '@royalnavy/react-component-library'
import { lightTheme } from '@royalnavy/design-tokens'

function App() {
  return (
    <GlobalStyleProvider theme={lightTheme}>
      <Button variant="primary">
        Hello, World!
      </Button>
    </GlobalStyleProvider>
  )
}

ReactDOM.render(<App />, document.querySelector('#app'))

<GlobalStyleProvider />

This context provider component applies global Royal Navy Design System styles to your application (resets, normalize and fonts). You should wrap the root of your app in this component.

Theming

By default the GlobalStyleProvider will use the lightTheme exported by the @royalnavy/design-tokens package. You can create your own themes by injecting your own custom token set via the theme prop.

We recommend reading the following blog post on styled-theming. Using this pattern you can selectively theme individual components. Inverting responsibility for the implementation of the theme to the component itself.

When utilising this pattern remember to extend a base token set:

<GlobalStyleProvider theme={{ ...lightTheme, customThemeMode: 'foo' }} />

Hooks

useFloatingElement

This hook aids in the positioning of arbitrary elements relative to a target element. The positoning engine will intelligently position the element based on available screen real-estate.

import { useFloatingElement } from '@royalnavy/react-component-library'

const Example = () => {
  const {
    targetElementRef,
    floatingElementRef,
    arrowElementRef,
    styles,
    attributes,
  } = useFloatingElement(placement)

  return (    
    <>
      <Target ref={targetElementRef} />
      <Float
        ref={floatingElementRef}
        style={styles.popper}
        {...attributes.popper}
      >
        Hello, World!
      </Float>
    </>
  )
}

The hook wraps a popular underlying positioning engine called Popper.

If you want opinionated styling for your floating element please consider the Popover component.

Questions

The Design System is maintained by a team at the Royal Navy. If you want to know more about the Royal Navy Design System, please email the Design System Team.

Documentation

The documentation website contains all the information you need to build your application using the Royal Navy Design System.

End to end tests

Tests are dependent on the application running.

yarn storybook:test

Run all specs

yarn test:e2e

Contributing

The contributing guide resource presents information about our development process.

Changelog

If you have recently updated then read the release notes

Roadmap

The Design System Roadmap Board contains the work that has been prioritised for the next 12 months.

License

The Royal Navy Design System is licensed under the Apache License 2.0.