blessed-contrib/lib/widget/log.js

Build dashboards (or any other application) using ascii/ansi art and javascript.

'use strict';
var blessed = require('blessed')
  , Node = blessed.Node
  , List = blessed.List;

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

  options = options || {};
  options.bufferLength = options.bufferLength || 30;
  this.options = options;
  List.call(this, options);

  this.logLines = [];
  this.interactive = false;
}

Log.prototype = Object.create(List.prototype);

Log.prototype.log = function(str) {
  this.logLines.push(str);
  if (this.logLines.length>this.options.bufferLength) {
    this.logLines.shift();
  }
  this.setItems(this.logLines);
  this.scrollTo(this.logLines.length);
};

Log.prototype.type = 'log';

module.exports = Log;