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toggle.js
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Wed, Feb 5, 15:12

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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