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name : radiobutton.js
 /**
 * radiobutton.js - radio button element for blessed
 * Copyright (c) 2013-2015, Christopher Jeffrey and contributors (MIT License).
 * https://github.com/chjj/blessed
 */

/**
 * Modules
 */

var Node = require('./node');
var Checkbox = require('./checkbox');

/**
 * RadioButton
 */

function RadioButton(options) {
  var self = this;

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

  options = options || {};

  Checkbox.call(this, options);

  this.on('check', function() {
    var el = self;
    while (el = el.parent) {
      if (el.type === 'radio-set'
          || el.type === 'form') break;
    }
    el = el || self.parent;
    el.forDescendants(function(el) {
      if (el.type !== 'radio-button' || el === self) {
        return;
      }
      el.uncheck();
    });
  });
}

RadioButton.prototype.__proto__ = Checkbox.prototype;

RadioButton.prototype.type = 'radio-button';

RadioButton.prototype.render = function() {
  this.clearPos(true);
  this.setContent('(' + (this.checked ? '*' : ' ') + ') ' + this.text, true);
  return this._render();
};

RadioButton.prototype.toggle = RadioButton.prototype.check;

/**
 * Expose
 */

module.exports = RadioButton;
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