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confirm.js
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Mon, Feb 10, 05:58

confirm.js
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"use strict";
const color = require('kleur');
const Prompt = require('./prompt');
const _require = require('../util'),
style = _require.style,
clear = _require.clear;
const _require2 = require('sisteransi'),
erase = _require2.erase,
cursor = _require2.cursor;
/**
* ConfirmPrompt Base Element
* @param {Object} opts Options
* @param {String} opts.message Message
* @param {Boolean} [opts.initial] Default value (true/false)
* @param {Stream} [opts.stdin] The Readable stream to listen to
* @param {Stream} [opts.stdout] The Writable stream to write readline data to
* @param {String} [opts.yes] The "Yes" label
* @param {String} [opts.yesOption] The "Yes" option when choosing between yes/no
* @param {String} [opts.no] The "No" label
* @param {String} [opts.noOption] The "No" option when choosing between yes/no
*/
class ConfirmPrompt extends Prompt {
constructor(opts = {}) {
super(opts);
this.msg = opts.message;
this.value = opts.initial;
this.initialValue = !!opts.initial;
this.yesMsg = opts.yes || 'yes';
this.yesOption = opts.yesOption || '(Y/n)';
this.noMsg = opts.no || 'no';
this.noOption = opts.noOption || '(y/N)';
this.render();
}
reset() {
this.value = this.initialValue;
this.fire();
this.render();
}
exit() {
this.abort();
}
abort() {
this.done = this.aborted = true;
this.fire();
this.render();
this.out.write('\n');
this.close();
}
submit() {
this.value = this.value || false;
this.done = true;
this.aborted = false;
this.fire();
this.render();
this.out.write('\n');
this.close();
}
_(c, key) {
if (c.toLowerCase() === 'y') {
this.value = true;
return this.submit();
}
if (c.toLowerCase() === 'n') {
this.value = false;
return this.submit();
}
return this.bell();
}
render() {
if (this.closed) return;
if (this.firstRender) this.out.write(cursor.hide);else this.out.write(clear(this.outputText, this.out.columns));
super.render();
this.outputText = [style.symbol(this.done, this.aborted), color.bold(this.msg), style.delimiter(this.done), this.done ? this.value ? this.yesMsg : this.noMsg : color.gray(this.initialValue ? this.yesOption : this.noOption)].join(' ');
this.out.write(erase.line + cursor.to(0) + this.outputText);
}
}
module.exports = ConfirmPrompt;

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