react-blessed-contrib

A wrapper for blessed-contrib widgets to be rendered with react-blessed.

Installation

You can install react-blessed-contrib through npm:

npm install react blessed react-blessed
npm install react-blessed-contrib

Demo

For a quick demo you can clone this repository and check some of the examples:

git clone https://github.com/dundalek/react-blessed-contrib
cd react-blessed-contrib
npm install
 
# Some examples (code is in `examples/`) 
npm run dashboard
npm run charts
npm run basic
 
# Run any example with babel-node 
./node_modules/.bin/babel-node examples/charts.js

Usage

Using components

Import components and render with React. You can mix them with native react-blessed components. Most components can be used directly as shown in the example. Refer to following sections to see how to use layout components like Grid and Carousel.

import React, { Component } from 'react';
import blessed from 'blessed';
import { render } from 'react-blessed';
import { Bar } from 'react-blessed-contrib';
 
// Rendering a simple centered box with a bar chart
class App extends Component {
  render() {
    return (
      <box top="center"
           left="center"
           width="80%"
           height="80%"
           border={{type: 'line'}}
           style={{border: {fg: 'blue'}}}>
        <Bar
          label="Server Utilization (%)"
          barWidth={4}
          barSpacing={6}
          xOffset={0}
          maxHeight={9}
          data={{
            titles: ['bar1', 'bar2'],
            data: [5, 10]
          }}
        />
      </box>
    );
  }
}
 
// Creating our screen
const screen = blessed.screen();
 
// Rendering the React app using our screen
const component = render(<App />, screen);

Grid

Pass in children components to use a grid layout:

import { Grid, Map } from 'react-blessed-contrib';
 
<Grid rows={12} cols={12}>
  <Map row={0} col={0} rowSpan={4} colSpan={4} label="World Map" />
  <box row={4} col={4} rowSpan={4} colSpan={4}>My Box</box>
</Grid>

If you don't specify rowSpan or colSpan then 1 is used as a default:

import { Grid, Map } from 'react-blessed-contrib';
 
<Grid rows={1} cols={2}>
  <Map col={0} label="World Map" />
  <box col={1}>My Box</box>
</Grid>

In case there would be name conflicts with props (row, col, rowSpan, colSpan), you can use alternative notation:

import { Grid, GridItem, Map } from 'react-blessed-contrib';
 
<Grid rows={12} cols={12}>
  <GridItem row={0} col={0} rowSpan={4} colSpan={4} component={Map} options={{label: 'World Map'}} />
  <GridItem row={4} col={4} rowSpan={4} colSpan={4} component={'box'} options={{content: 'My Box'}} />
</Grid>

Carousel

Pass in subcomponents as children. Refer to examples/carousel.js for full example.

import { Carousel } from 'react-blessed-contrib';
 
<Carousel interval={3000} controlKeys={true} screen={screen}>
  <Page1 />
  <Page2 />
</Carousel>

Wrapping a custom blessed widget

Say you have a custom blessed widget:

const widget = myBlessedWidget();
screen.append(widget);

You can wrap it in a component and use like:

import React from 'react';
import { render } from 'react-blessed';
import { createBlessedComponent } = 'react-blessed-contrib';
 
const MyBlessedWidget = createBlessedComponent(myBlessedWidget);
 
render(<MyBlessedWidget />, screen);

License

MIT

Resources

Useful resources for learning more about React internals:

• https://facebook.github.io/react/blog/2015/12/18/react-components-elements-and-instances.html
• http://goshakkk.name/react-custom-renderers/