---
name: Introduction
route: /
---

import { Playground, Props } from 'docz'
import { State } from 'react-powerplug'
import { TableList, TableListItem } from './../index.js'

# Introduction

**React Viewerbase is a collection of components and utilities** that power
OHIF's [zero-footprint DICOM viewer](https://github.com/OHIF/Viewers)
([demo][demo-url]). We maintain them as a separate component library to:

- Decouple presentation from business logic
- Test and develop components in isolation
- Provide well documented, reusable components
- Aid rapid application development for context specific viewers

## Quick Example

> This component library is pre- v1.0. All realeases until a v1.0 have the
> possibility of introducing breaking changes. Please depend on an "exact"
> version in your projects to prevent issues caused by loose versioning.

```js
// Add 'react-viewerbase' as a dependency
yarn add react-viewerbase

// Import and use components
import { TableList } from 'react-viewerbase'
```

<Playground>
  <State
    initial={{
      selectedIndex: null,
      listItems: [
        { label: 'Brain Left' },
        { label: 'Brain Right' },
        { label: 'Heart Left' },
        { label: 'Heart Right' },
      ],
    }}
  >
    {({ state, setState }) => (
      <TableList headerTitle="Example Table List Header">
        {state.listItems.map((item, index) => {
          return (
            <TableListItem
              key={`item_${index}`}
              itemClass={state.selectedIndex === index ? 'selected' : ''}
              itemIndex={index}
              onItemClick={() => alert('item clicked')}
            >
              <label>{item.label}</label>
            </TableListItem>
          )
        })}
      </TableList>
    )}
  </State>
</Playground>

## FAQ

...

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[demo-url]: https://docs.ohif.org/demo/
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