--- /dev/null
+'use strict';
+
+const colors = require('ansi-colors');
+const Prompt = require('../prompt');
+const roles = require('../roles');
+const utils = require('../utils');
+const { reorder, scrollUp, scrollDown, isObject, swap } = utils;
+
+class ArrayPrompt extends Prompt {
+ constructor(options) {
+ super(options);
+ this.cursorHide();
+ this.maxSelected = options.maxSelected || Infinity;
+ this.multiple = options.multiple || false;
+ this.initial = options.initial || 0;
+ this.delay = options.delay || 0;
+ this.longest = 0;
+ this.num = '';
+ }
+
+ async initialize() {
+ if (typeof this.options.initial === 'function') {
+ this.initial = await this.options.initial.call(this);
+ }
+ await this.reset(true);
+ await super.initialize();
+ }
+
+ async reset() {
+ let { choices, initial, autofocus, suggest } = this.options;
+ this.state._choices = [];
+ this.state.choices = [];
+
+ this.choices = await Promise.all(await this.toChoices(choices));
+ this.choices.forEach(ch => (ch.enabled = false));
+
+ if (typeof suggest !== 'function' && this.selectable.length === 0) {
+ throw new Error('At least one choice must be selectable');
+ }
+
+ if (isObject(initial)) initial = Object.keys(initial);
+ if (Array.isArray(initial)) {
+ if (autofocus != null) this.index = this.findIndex(autofocus);
+ initial.forEach(v => this.enable(this.find(v)));
+ await this.render();
+ } else {
+ if (autofocus != null) initial = autofocus;
+ if (typeof initial === 'string') initial = this.findIndex(initial);
+ if (typeof initial === 'number' && initial > -1) {
+ this.index = Math.max(0, Math.min(initial, this.choices.length));
+ this.enable(this.find(this.index));
+ }
+ }
+
+ if (this.isDisabled(this.focused)) {
+ await this.down();
+ }
+ }
+
+ async toChoices(value, parent) {
+ this.state.loadingChoices = true;
+ let choices = [];
+ let index = 0;
+
+ let toChoices = async(items, parent) => {
+ if (typeof items === 'function') items = await items.call(this);
+ if (items instanceof Promise) items = await items;
+
+ for (let i = 0; i < items.length; i++) {
+ let choice = items[i] = await this.toChoice(items[i], index++, parent);
+ choices.push(choice);
+
+ if (choice.choices) {
+ await toChoices(choice.choices, choice);
+ }
+ }
+ return choices;
+ };
+
+ return toChoices(value, parent)
+ .then(choices => {
+ this.state.loadingChoices = false;
+ return choices;
+ });
+ }
+
+ async toChoice(ele, i, parent) {
+ if (typeof ele === 'function') ele = await ele.call(this, this);
+ if (ele instanceof Promise) ele = await ele;
+ if (typeof ele === 'string') ele = { name: ele };
+
+ if (ele.normalized) return ele;
+ ele.normalized = true;
+
+ let origVal = ele.value;
+ let role = roles(ele.role, this.options);
+ ele = role(this, ele);
+
+ if (typeof ele.disabled === 'string' && !ele.hint) {
+ ele.hint = ele.disabled;
+ ele.disabled = true;
+ }
+
+ if (ele.disabled === true && ele.hint == null) {
+ ele.hint = '(disabled)';
+ }
+
+ // if the choice was already normalized, return it
+ if (ele.index != null) return ele;
+ ele.name = ele.name || ele.key || ele.title || ele.value || ele.message;
+ ele.message = ele.message || ele.name || '';
+ ele.value = [ele.value, ele.name].find(this.isValue.bind(this));
+
+ ele.input = '';
+ ele.index = i;
+ ele.cursor = 0;
+
+ utils.define(ele, 'parent', parent);
+ ele.level = parent ? parent.level + 1 : 1;
+ if (ele.indent == null) {
+ ele.indent = parent ? parent.indent + ' ' : (ele.indent || '');
+ }
+
+ ele.path = parent ? parent.path + '.' + ele.name : ele.name;
+ ele.enabled = !!(this.multiple && !this.isDisabled(ele) && (ele.enabled || this.isSelected(ele)));
+
+ if (!this.isDisabled(ele)) {
+ this.longest = Math.max(this.longest, colors.unstyle(ele.message).length);
+ }
+
+ // shallow clone the choice first
+ let choice = { ...ele };
+
+ // then allow the choice to be reset using the "original" values
+ ele.reset = (input = choice.input, value = choice.value) => {
+ for (let key of Object.keys(choice)) ele[key] = choice[key];
+ ele.input = input;
+ ele.value = value;
+ };
+
+ if (origVal == null && typeof ele.initial === 'function') {
+ ele.input = await ele.initial.call(this, this.state, ele, i);
+ }
+
+ return ele;
+ }
+
+ async onChoice(choice, i) {
+ this.emit('choice', choice, i, this);
+
+ if (typeof choice.onChoice === 'function') {
+ await choice.onChoice.call(this, this.state, choice, i);
+ }
+ }
+
+ async addChoice(ele, i, parent) {
+ let choice = await this.toChoice(ele, i, parent);
+ this.choices.push(choice);
+ this.index = this.choices.length - 1;
+ this.limit = this.choices.length;
+ return choice;
+ }
+
+ async newItem(item, i, parent) {
+ let ele = { name: 'New choice name?', editable: true, newChoice: true, ...item };
+ let choice = await this.addChoice(ele, i, parent);
+
+ choice.updateChoice = () => {
+ delete choice.newChoice;
+ choice.name = choice.message = choice.input;
+ choice.input = '';
+ choice.cursor = 0;
+ };
+
+ return this.render();
+ }
+
+ indent(choice) {
+ if (choice.indent == null) {
+ return choice.level > 1 ? ' '.repeat(choice.level - 1) : '';
+ }
+ return choice.indent;
+ }
+
+ dispatch(s, key) {
+ if (this.multiple && this[key.name]) return this[key.name]();
+ this.alert();
+ }
+
+ focus(choice, enabled) {
+ if (typeof enabled !== 'boolean') enabled = choice.enabled;
+ if (enabled && !choice.enabled && this.selected.length >= this.maxSelected) {
+ return this.alert();
+ }
+ this.index = choice.index;
+ choice.enabled = enabled && !this.isDisabled(choice);
+ return choice;
+ }
+
+ space() {
+ if (!this.multiple) return this.alert();
+ this.toggle(this.focused);
+ return this.render();
+ }
+
+ a() {
+ if (this.maxSelected < this.choices.length) return this.alert();
+ let enabled = this.selectable.every(ch => ch.enabled);
+ this.choices.forEach(ch => (ch.enabled = !enabled));
+ return this.render();
+ }
+
+ i() {
+ // don't allow choices to be inverted if it will result in
+ // more than the maximum number of allowed selected items.
+ if (this.choices.length - this.selected.length > this.maxSelected) {
+ return this.alert();
+ }
+ this.choices.forEach(ch => (ch.enabled = !ch.enabled));
+ return this.render();
+ }
+
+ g(choice = this.focused) {
+ if (!this.choices.some(ch => !!ch.parent)) return this.a();
+ this.toggle((choice.parent && !choice.choices) ? choice.parent : choice);
+ return this.render();
+ }
+
+ toggle(choice, enabled) {
+ if (!choice.enabled && this.selected.length >= this.maxSelected) {
+ return this.alert();
+ }
+
+ if (typeof enabled !== 'boolean') enabled = !choice.enabled;
+ choice.enabled = enabled;
+
+ if (choice.choices) {
+ choice.choices.forEach(ch => this.toggle(ch, enabled));
+ }
+
+ let parent = choice.parent;
+ while (parent) {
+ let choices = parent.choices.filter(ch => this.isDisabled(ch));
+ parent.enabled = choices.every(ch => ch.enabled === true);
+ parent = parent.parent;
+ }
+
+ reset(this, this.choices);
+ this.emit('toggle', choice, this);
+ return choice;
+ }
+
+ enable(choice) {
+ if (this.selected.length >= this.maxSelected) return this.alert();
+ choice.enabled = !this.isDisabled(choice);
+ choice.choices && choice.choices.forEach(this.enable.bind(this));
+ return choice;
+ }
+
+ disable(choice) {
+ choice.enabled = false;
+ choice.choices && choice.choices.forEach(this.disable.bind(this));
+ return choice;
+ }
+
+ number(n) {
+ this.num += n;
+
+ let number = num => {
+ let i = Number(num);
+ if (i > this.choices.length - 1) return this.alert();
+
+ let focused = this.focused;
+ let choice = this.choices.find(ch => i === ch.index);
+
+ if (!choice.enabled && this.selected.length >= this.maxSelected) {
+ return this.alert();
+ }
+
+ if (this.visible.indexOf(choice) === -1) {
+ let choices = reorder(this.choices);
+ let actualIdx = choices.indexOf(choice);
+
+ if (focused.index > actualIdx) {
+ let start = choices.slice(actualIdx, actualIdx + this.limit);
+ let end = choices.filter(ch => !start.includes(ch));
+ this.choices = start.concat(end);
+ } else {
+ let pos = actualIdx - this.limit + 1;
+ this.choices = choices.slice(pos).concat(choices.slice(0, pos));
+ }
+ }
+
+ this.index = this.choices.indexOf(choice);
+ this.toggle(this.focused);
+ return this.render();
+ };
+
+ clearTimeout(this.numberTimeout);
+
+ return new Promise(resolve => {
+ let len = this.choices.length;
+ let num = this.num;
+
+ let handle = (val = false, res) => {
+ clearTimeout(this.numberTimeout);
+ if (val) res = number(num);
+ this.num = '';
+ resolve(res);
+ };
+
+ if (num === '0' || (num.length === 1 && Number(num + '0') > len)) {
+ return handle(true);
+ }
+
+ if (Number(num) > len) {
+ return handle(false, this.alert());
+ }
+
+ this.numberTimeout = setTimeout(() => handle(true), this.delay);
+ });
+ }
+
+ home() {
+ this.choices = reorder(this.choices);
+ this.index = 0;
+ return this.render();
+ }
+
+ end() {
+ let pos = this.choices.length - this.limit;
+ let choices = reorder(this.choices);
+ this.choices = choices.slice(pos).concat(choices.slice(0, pos));
+ this.index = this.limit - 1;
+ return this.render();
+ }
+
+ first() {
+ this.index = 0;
+ return this.render();
+ }
+
+ last() {
+ this.index = this.visible.length - 1;
+ return this.render();
+ }
+
+ prev() {
+ if (this.visible.length <= 1) return this.alert();
+ return this.up();
+ }
+
+ next() {
+ if (this.visible.length <= 1) return this.alert();
+ return this.down();
+ }
+
+ right() {
+ if (this.cursor >= this.input.length) return this.alert();
+ this.cursor++;
+ return this.render();
+ }
+
+ left() {
+ if (this.cursor <= 0) return this.alert();
+ this.cursor--;
+ return this.render();
+ }
+
+ up() {
+ let len = this.choices.length;
+ let vis = this.visible.length;
+ let idx = this.index;
+ if (this.options.scroll === false && idx === 0) {
+ return this.alert();
+ }
+ if (len > vis && idx === 0) {
+ return this.scrollUp();
+ }
+ this.index = ((idx - 1 % len) + len) % len;
+ if (this.isDisabled()) {
+ return this.up();
+ }
+ return this.render();
+ }
+
+ down() {
+ let len = this.choices.length;
+ let vis = this.visible.length;
+ let idx = this.index;
+ if (this.options.scroll === false && idx === vis - 1) {
+ return this.alert();
+ }
+ if (len > vis && idx === vis - 1) {
+ return this.scrollDown();
+ }
+ this.index = (idx + 1) % len;
+ if (this.isDisabled()) {
+ return this.down();
+ }
+ return this.render();
+ }
+
+ scrollUp(i = 0) {
+ this.choices = scrollUp(this.choices);
+ this.index = i;
+ if (this.isDisabled()) {
+ return this.up();
+ }
+ return this.render();
+ }
+
+ scrollDown(i = this.visible.length - 1) {
+ this.choices = scrollDown(this.choices);
+ this.index = i;
+ if (this.isDisabled()) {
+ return this.down();
+ }
+ return this.render();
+ }
+
+ async shiftUp() {
+ if (this.options.sort === true) {
+ this.sorting = true;
+ this.swap(this.index - 1);
+ await this.up();
+ this.sorting = false;
+ return;
+ }
+ return this.scrollUp(this.index);
+ }
+
+ async shiftDown() {
+ if (this.options.sort === true) {
+ this.sorting = true;
+ this.swap(this.index + 1);
+ await this.down();
+ this.sorting = false;
+ return;
+ }
+ return this.scrollDown(this.index);
+ }
+
+ pageUp() {
+ if (this.visible.length <= 1) return this.alert();
+ this.limit = Math.max(this.limit - 1, 0);
+ this.index = Math.min(this.limit - 1, this.index);
+ this._limit = this.limit;
+ if (this.isDisabled()) {
+ return this.up();
+ }
+ return this.render();
+ }
+
+ pageDown() {
+ if (this.visible.length >= this.choices.length) return this.alert();
+ this.index = Math.max(0, this.index);
+ this.limit = Math.min(this.limit + 1, this.choices.length);
+ this._limit = this.limit;
+ if (this.isDisabled()) {
+ return this.down();
+ }
+ return this.render();
+ }
+
+ swap(pos) {
+ swap(this.choices, this.index, pos);
+ }
+
+ isDisabled(choice = this.focused) {
+ let keys = ['disabled', 'collapsed', 'hidden', 'completing', 'readonly'];
+ if (choice && keys.some(key => choice[key] === true)) {
+ return true;
+ }
+ return choice && choice.role === 'heading';
+ }
+
+ isEnabled(choice = this.focused) {
+ if (Array.isArray(choice)) return choice.every(ch => this.isEnabled(ch));
+ if (choice.choices) {
+ let choices = choice.choices.filter(ch => !this.isDisabled(ch));
+ return choice.enabled && choices.every(ch => this.isEnabled(ch));
+ }
+ return choice.enabled && !this.isDisabled(choice);
+ }
+
+ isChoice(choice, value) {
+ return choice.name === value || choice.index === Number(value);
+ }
+
+ isSelected(choice) {
+ if (Array.isArray(this.initial)) {
+ return this.initial.some(value => this.isChoice(choice, value));
+ }
+ return this.isChoice(choice, this.initial);
+ }
+
+ map(names = [], prop = 'value') {
+ return [].concat(names || []).reduce((acc, name) => {
+ acc[name] = this.find(name, prop);
+ return acc;
+ }, {});
+ }
+
+ filter(value, prop) {
+ let isChoice = (ele, i) => [ele.name, i].includes(value);
+ let fn = typeof value === 'function' ? value : isChoice;
+ let choices = this.options.multiple ? this.state._choices : this.choices;
+ let result = choices.filter(fn);
+ if (prop) {
+ return result.map(ch => ch[prop]);
+ }
+ return result;
+ }
+
+ find(value, prop) {
+ if (isObject(value)) return prop ? value[prop] : value;
+ let isChoice = (ele, i) => [ele.name, i].includes(value);
+ let fn = typeof value === 'function' ? value : isChoice;
+ let choice = this.choices.find(fn);
+ if (choice) {
+ return prop ? choice[prop] : choice;
+ }
+ }
+
+ findIndex(value) {
+ return this.choices.indexOf(this.find(value));
+ }
+
+ async submit() {
+ let choice = this.focused;
+ if (!choice) return this.alert();
+
+ if (choice.newChoice) {
+ if (!choice.input) return this.alert();
+ choice.updateChoice();
+ return this.render();
+ }
+
+ if (this.choices.some(ch => ch.newChoice)) {
+ return this.alert();
+ }
+
+ let { reorder, sort } = this.options;
+ let multi = this.multiple === true;
+ let value = this.selected;
+ if (value === void 0) {
+ return this.alert();
+ }
+
+ // re-sort choices to original order
+ if (Array.isArray(value) && reorder !== false && sort !== true) {
+ value = utils.reorder(value);
+ }
+
+ this.value = multi ? value.map(ch => ch.name) : value.name;
+ return super.submit();
+ }
+
+ set choices(choices = []) {
+ this.state._choices = this.state._choices || [];
+ this.state.choices = choices;
+
+ for (let choice of choices) {
+ if (!this.state._choices.some(ch => ch.name === choice.name)) {
+ this.state._choices.push(choice);
+ }
+ }
+
+ if (!this._initial && this.options.initial) {
+ this._initial = true;
+ let init = this.initial;
+ if (typeof init === 'string' || typeof init === 'number') {
+ let choice = this.find(init);
+ if (choice) {
+ this.initial = choice.index;
+ this.focus(choice, true);
+ }
+ }
+ }
+ }
+ get choices() {
+ return reset(this, this.state.choices || []);
+ }
+
+ set visible(visible) {
+ this.state.visible = visible;
+ }
+ get visible() {
+ return (this.state.visible || this.choices).slice(0, this.limit);
+ }
+
+ set limit(num) {
+ this.state.limit = num;
+ }
+ get limit() {
+ let { state, options, choices } = this;
+ let limit = state.limit || this._limit || options.limit || choices.length;
+ return Math.min(limit, this.height);
+ }
+
+ set value(value) {
+ super.value = value;
+ }
+ get value() {
+ if (typeof super.value !== 'string' && super.value === this.initial) {
+ return this.input;
+ }
+ return super.value;
+ }
+
+ set index(i) {
+ this.state.index = i;
+ }
+ get index() {
+ return Math.max(0, this.state ? this.state.index : 0);
+ }
+
+ get enabled() {
+ return this.filter(this.isEnabled.bind(this));
+ }
+
+ get focused() {
+ let choice = this.choices[this.index];
+ if (choice && this.state.submitted && this.multiple !== true) {
+ choice.enabled = true;
+ }
+ return choice;
+ }
+
+ get selectable() {
+ return this.choices.filter(choice => !this.isDisabled(choice));
+ }
+
+ get selected() {
+ return this.multiple ? this.enabled : this.focused;
+ }
+}
+
+function reset(prompt, choices) {
+ if (choices instanceof Promise) return choices;
+ if (typeof choices === 'function') {
+ if (utils.isAsyncFn(choices)) return choices;
+ choices = choices.call(prompt, prompt);
+ }
+ for (let choice of choices) {
+ if (Array.isArray(choice.choices)) {
+ let items = choice.choices.filter(ch => !prompt.isDisabled(ch));
+ choice.enabled = items.every(ch => ch.enabled === true);
+ }
+ if (prompt.isDisabled(choice) === true) {
+ delete choice.enabled;
+ }
+ }
+ return choices;
+}
+
+module.exports = ArrayPrompt;
projects / dotfiles / .git / blobdiff