lepu-test-platform-web/node_modules/enquirer/lib/prompts/scale.js

238 lines
6.7 KiB
JavaScript

'use strict';
const colors = require('ansi-colors');
const ArrayPrompt = require('../types/array');
const utils = require('../utils');
class LikertScale extends ArrayPrompt {
constructor(options = {}) {
super(options);
this.widths = [].concat(options.messageWidth || 50);
this.align = [].concat(options.align || 'left');
this.linebreak = options.linebreak || false;
this.edgeLength = options.edgeLength || 3;
this.newline = options.newline || '\n ';
let start = options.startNumber || 1;
if (typeof this.scale === 'number') {
this.scaleKey = false;
this.scale = Array(this.scale).fill(0).map((v, i) => ({ name: i + start }));
}
}
async reset() {
this.tableized = false;
await super.reset();
return this.render();
}
tableize() {
if (this.tableized === true) return;
this.tableized = true;
let longest = 0;
for (let ch of this.choices) {
longest = Math.max(longest, ch.message.length);
ch.scaleIndex = ch.initial || 2;
ch.scale = [];
for (let i = 0; i < this.scale.length; i++) {
ch.scale.push({ index: i });
}
}
this.widths[0] = Math.min(this.widths[0], longest + 3);
}
async dispatch(s, key) {
if (this.multiple) {
return this[key.name] ? await this[key.name](s, key) : await super.dispatch(s, key);
}
this.alert();
}
heading(msg, item, i) {
return this.styles.strong(msg);
}
separator() {
return this.styles.muted(this.symbols.ellipsis);
}
right() {
let choice = this.focused;
if (choice.scaleIndex >= this.scale.length - 1) return this.alert();
choice.scaleIndex++;
return this.render();
}
left() {
let choice = this.focused;
if (choice.scaleIndex <= 0) return this.alert();
choice.scaleIndex--;
return this.render();
}
indent() {
return '';
}
format() {
if (this.state.submitted) {
let values = this.choices.map(ch => this.styles.info(ch.index));
return values.join(', ');
}
return '';
}
pointer() {
return '';
}
/**
* Render the scale "Key". Something like:
* @return {String}
*/
renderScaleKey() {
if (this.scaleKey === false) return '';
if (this.state.submitted) return '';
let scale = this.scale.map(item => ` ${item.name} - ${item.message}`);
let key = ['', ...scale].map(item => this.styles.muted(item));
return key.join('\n');
}
/**
* Render the heading row for the scale.
* @return {String}
*/
renderScaleHeading(max) {
let keys = this.scale.map(ele => ele.name);
if (typeof this.options.renderScaleHeading === 'function') {
keys = this.options.renderScaleHeading.call(this, max);
}
let diff = this.scaleLength - keys.join('').length;
let spacing = Math.round(diff / (keys.length - 1));
let names = keys.map(key => this.styles.strong(key));
let headings = names.join(' '.repeat(spacing));
let padding = ' '.repeat(this.widths[0]);
return this.margin[3] + padding + this.margin[1] + headings;
}
/**
* Render a scale indicator => ◯ or ◉ by default
*/
scaleIndicator(choice, item, i) {
if (typeof this.options.scaleIndicator === 'function') {
return this.options.scaleIndicator.call(this, choice, item, i);
}
let enabled = choice.scaleIndex === item.index;
if (item.disabled) return this.styles.hint(this.symbols.radio.disabled);
if (enabled) return this.styles.success(this.symbols.radio.on);
return this.symbols.radio.off;
}
/**
* Render the actual scale => ◯────◯────◉────◯────◯
*/
renderScale(choice, i) {
let scale = choice.scale.map(item => this.scaleIndicator(choice, item, i));
let padding = this.term === 'Hyper' ? '' : ' ';
return scale.join(padding + this.symbols.line.repeat(this.edgeLength));
}
/**
* Render a choice, including scale =>
* "The website is easy to navigate. ◯───◯───◉───◯───◯"
*/
async renderChoice(choice, i) {
await this.onChoice(choice, i);
let focused = this.index === i;
let pointer = await this.pointer(choice, i);
let hint = await choice.hint;
if (hint && !utils.hasColor(hint)) {
hint = this.styles.muted(hint);
}
let pad = str => this.margin[3] + str.replace(/\s+$/, '').padEnd(this.widths[0], ' ');
let newline = this.newline;
let ind = this.indent(choice);
let message = await this.resolve(choice.message, this.state, choice, i);
let scale = await this.renderScale(choice, i);
let margin = this.margin[1] + this.margin[3];
this.scaleLength = colors.unstyle(scale).length;
this.widths[0] = Math.min(this.widths[0], this.width - this.scaleLength - margin.length);
let msg = utils.wordWrap(message, { width: this.widths[0], newline });
let lines = msg.split('\n').map(line => pad(line) + this.margin[1]);
if (focused) {
scale = this.styles.info(scale);
lines = lines.map(line => this.styles.info(line));
}
lines[0] += scale;
if (this.linebreak) lines.push('');
return [ind + pointer, lines.join('\n')].filter(Boolean);
}
async renderChoices() {
if (this.state.submitted) return '';
this.tableize();
let choices = this.visible.map(async(ch, i) => await this.renderChoice(ch, i));
let visible = await Promise.all(choices);
let heading = await this.renderScaleHeading();
return this.margin[0] + [heading, ...visible.map(v => v.join(' '))].join('\n');
}
async render() {
let { submitted, size } = this.state;
let prefix = await this.prefix();
let separator = await this.separator();
let message = await this.message();
let prompt = '';
if (this.options.promptLine !== false) {
prompt = [prefix, message, separator, ''].join(' ');
this.state.prompt = prompt;
}
let header = await this.header();
let output = await this.format();
let key = await this.renderScaleKey();
let help = await this.error() || await this.hint();
let body = await this.renderChoices();
let footer = await this.footer();
let err = this.emptyError;
if (output) prompt += output;
if (help && !prompt.includes(help)) prompt += ' ' + help;
if (submitted && !output && !body.trim() && this.multiple && err != null) {
prompt += this.styles.danger(err);
}
this.clear(size);
this.write([header, prompt, key, body, footer].filter(Boolean).join('\n'));
if (!this.state.submitted) {
this.write(this.margin[2]);
}
this.restore();
}
submit() {
this.value = {};
for (let choice of this.choices) {
this.value[choice.name] = choice.scaleIndex;
}
return this.base.submit.call(this);
}
}
module.exports = LikertScale;