bot18/node_modules/blessed-contrib/lib/widget/sparkline.js

A high-frequency cryptocurrency trading bot by Zenbot creator @carlos8f

var blessed = require('blessed')
   , Node = blessed.Node
   , Box = blessed.Box
   , sparkline = require('sparkline')

function Sparkline(options) {

  var self = this

  if (!(this instanceof Node)) {
    return new Sparkline(options);
  }

  options = options || {};
  options.bufferLength = options.bufferLength || 30;
  options.style = options.style || {}
  options.style.titleFg = options.style.titleFg || 'white'
  this.options = options
  Box.call(this, options);


  this.on("attach", function() {
    if (self.options.data) {
      self.setData(self.options.data.titles, self.options.data.data)
    }
  })

}

Sparkline.prototype.setData = function(titles, datasets) {
  var res = '\r\n'
  for (var i=0; i<titles.length; i++) {
    res += '{bold}{'+this.options.style.titleFg+'-fg}' + titles[i]+':{/'+this.options.style.titleFg+'-fg}{/bold}\r\n'
    res += sparkline(datasets[i].slice(0, this.width-2)) + '\r\n\r\n'
  }
  
  this.setContent(res)
}

Sparkline.prototype.getOptionsPrototype = function() {
  return { label: 'Sparkline'
         , tags: true
         , border: {type: "line", fg: "cyan"}
         , width: '50%'
         , height: '50%'
         , style: { fg: 'blue' }
         , data: { titles: [ 'Sparkline1', 'Sparkline2'],
                   data: [ [10, 20, 30, 20, 50, 70, 60, 30, 35, 38]
                         , [40, 10, 40, 50, 20, 30, 20, 20, 19, 40] ]
                 }
         }
}

Sparkline.prototype.__proto__ = Box.prototype;

Sparkline.prototype.type = 'sparkline';

module.exports = Sparkline