Files F101062569

toggle.js
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Created: Wed, Feb 5, 08:42

toggle.js
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	const color = require('kleur');
	const Prompt = require('./prompt');
	const { style, clear } = require('../util');
	const { cursor, erase } = require('sisteransi');

	/**
	* TogglePrompt Base Element
	* @param {Object} opts Options
	* @param {String} opts.message Message
	* @param {Boolean} [opts.initial=false] Default value
	* @param {String} [opts.active='no'] Active label
	* @param {String} [opts.inactive='off'] Inactive label
	* @param {Stream} [opts.stdin] The Readable stream to listen to
	* @param {Stream} [opts.stdout] The Writable stream to write readline data to
	*/
	class TogglePrompt extends Prompt {
	constructor(opts={}) {
	super(opts);
	this.msg = opts.message;
	this.value = !!opts.initial;
	this.active = opts.active \|\| 'on';
	this.inactive = opts.inactive \|\| 'off';
	this.initialValue = this.value;
	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.done = true;
	this.aborted = false;
	this.fire();
	this.render();
	this.out.write('\n');
	this.close();
	}

	deactivate() {
	if (this.value === false) return this.bell();
	this.value = false;
	this.render();
	}

	activate() {
	if (this.value === true) return this.bell();
	this.value = true;
	this.render();
	}

	delete() {
	this.deactivate();
	}
	left() {
	this.deactivate();
	}
	right() {
	this.activate();
	}
	down() {
	this.deactivate();
	}
	up() {
	this.activate();
	}

	next() {
	this.value = !this.value;
	this.fire();
	this.render();
	}

	_(c, key) {
	if (c === ' ') {
	this.value = !this.value;
	} else if (c === '1') {
	this.value = true;
	} else if (c === '0') {
	this.value = false;
	} else return this.bell();
	this.render();
	}

	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.value ? this.inactive : color.cyan().underline(this.inactive),
	color.gray('/'),
	this.value ? color.cyan().underline(this.active) : this.active
	].join(' ');

	this.out.write(erase.line + cursor.to(0) + this.outputText);
	}
	}

	module.exports = TogglePrompt;

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