139 lines
3.0 KiB
JavaScript
139 lines
3.0 KiB
JavaScript
const color = require('kleur');
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const Prompt = require('./prompt');
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const { cursor } = require('sisteransi');
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const { style, clear } = require('../util');
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/**
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* TextPrompt Base Element
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* @param {Object} opts Options
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* @param {String} opts.message Message
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* @param {String} [opts.style='default'] Render style
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* @param {String} [opts.initial] Default value
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*/
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class TextPrompt extends Prompt {
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constructor(opts={}) {
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super(opts);
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this.transform = style.render(opts.style);
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this.scale = this.transform.scale;
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this.msg = opts.message;
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this.initial = opts.initial || '';
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this.value = '';
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this.cursor = Number(!!this.initial);
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this.clear = clear('');
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this.render();
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}
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set value(v) {
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if (!v && this.initial) {
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this.placeholder = true;
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this.rendered = color.gray(this.transform.render(this.initial));
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} else {
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this.placeholder = false;
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this.rendered = this.transform.render(v);
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}
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this._value = v;
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this.fire();
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}
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get value() {
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return this._value;
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}
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reset() {
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this.value = '';
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this.fire();
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this.render();
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}
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abort() {
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this.value = this.value || this.initial;
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this.done = this.aborted = true;
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this.fire();
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this.render();
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this.out.write('\n');
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this.close();
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}
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submit() {
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this.value = this.value || this.initial;
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this.done = true;
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this.aborted = false;
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this.fire();
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this.render();
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this.out.write('\n');
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this.close();
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}
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next() {
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if (!this.placeholder) return this.bell();
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this.value = this.initial;
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this.cursor = this.rendered.length;
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this.fire();
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this.render();
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}
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moveCursor(n) {
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if (this.placeholder) return;
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this.cursor = this.cursor+n;
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}
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_(c, key) {
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let s1 = this.value.slice(0, this.cursor);
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let s2 = this.value.slice(this.cursor);
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this.moveCursor(1);
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this.value = `${s1}${c}${s2}`;
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if (this.placeholder) this.cursor = 0;
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this.render();
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}
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delete() {
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if (this.value.length === 0) return this.bell();
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let s1 = this.value.slice(0, this.cursor-1);
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let s2 = this.value.slice(this.cursor);
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this.value = `${s1}${s2}`;
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this.moveCursor(-1);
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this.render();
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}
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first() {
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this.cursor = 0;
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this.render();
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}
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last() {
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this.cursor = this.value.length;
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this.render();
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}
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left() {
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if (this.cursor <= 0 || this.placeholder) return this.bell();
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this.moveCursor(-1);
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this.render();
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}
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right() {
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if (this.cursor*this.scale >= this.rendered.length || this.placeholder) return this.bell();
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this.moveCursor(1);
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this.render();
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}
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render() {
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const prompt = [
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style.symbol(this.done, this.aborted),
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color.bold(this.msg),
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style.delimiter(this.done),
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this.rendered
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].join(' ');
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this.out.write(this.clear + prompt);
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this.out.write(cursor.move(this.placeholder ?
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-this.initial.length*this.scale :
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-this.rendered.length + this.cursor*this.scale
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));
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this.clear = clear(prompt);
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}
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}
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module.exports = TextPrompt;
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