source: trip-planner-front/node_modules/inquirer/lib/objects/choices.js@ 8d391a1

Last change on this file since 8d391a1 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 2.9 KB
Line 
1'use strict';
2const assert = require('assert');
3const _ = {
4 isNumber: require('lodash/isNumber'),
5 filter: require('lodash/filter'),
6 map: require('lodash/map'),
7 find: require('lodash/find'),
8};
9const Separator = require('./separator');
10const Choice = require('./choice');
11
12/**
13 * Choices collection
14 * Collection of multiple `choice` object
15 * @constructor
16 * @param {Array} choices All `choice` to keep in the collection
17 */
18
19module.exports = class Choices {
20 constructor(choices, answers) {
21 this.choices = choices.map((val) => {
22 if (val.type === 'separator') {
23 if (!(val instanceof Separator)) {
24 val = new Separator(val.line);
25 }
26
27 return val;
28 }
29
30 return new Choice(val, answers);
31 });
32
33 this.realChoices = this.choices
34 .filter(Separator.exclude)
35 .filter((item) => !item.disabled);
36
37 Object.defineProperty(this, 'length', {
38 get() {
39 return this.choices.length;
40 },
41 set(val) {
42 this.choices.length = val;
43 },
44 });
45
46 Object.defineProperty(this, 'realLength', {
47 get() {
48 return this.realChoices.length;
49 },
50 set() {
51 throw new Error('Cannot set `realLength` of a Choices collection');
52 },
53 });
54 }
55
56 /**
57 * Get a valid choice from the collection
58 * @param {Number} selector The selected choice index
59 * @return {Choice|Undefined} Return the matched choice or undefined
60 */
61
62 getChoice(selector) {
63 assert(_.isNumber(selector));
64 return this.realChoices[selector];
65 }
66
67 /**
68 * Get a raw element from the collection
69 * @param {Number} selector The selected index value
70 * @return {Choice|Undefined} Return the matched choice or undefined
71 */
72
73 get(selector) {
74 assert(_.isNumber(selector));
75 return this.choices[selector];
76 }
77
78 /**
79 * Match the valid choices against a where clause
80 * @param {Object} whereClause Lodash `where` clause
81 * @return {Array} Matching choices or empty array
82 */
83
84 where(whereClause) {
85 return _.filter(this.realChoices, whereClause);
86 }
87
88 /**
89 * Pluck a particular key from the choices
90 * @param {String} propertyName Property name to select
91 * @return {Array} Selected properties
92 */
93
94 pluck(propertyName) {
95 return _.map(this.realChoices, propertyName);
96 }
97
98 // Expose usual Array methods
99 indexOf(...args) {
100 return this.choices.indexOf(...args);
101 }
102
103 forEach(...args) {
104 return this.choices.forEach(...args);
105 }
106
107 filter(...args) {
108 return this.choices.filter(...args);
109 }
110
111 reduce(...args) {
112 return this.choices.reduce(...args);
113 }
114
115 find(func) {
116 return _.find(this.choices, func);
117 }
118
119 push(...args) {
120 const objs = _.map(args, (val) => new Choice(val));
121 this.choices.push(...objs);
122 this.realChoices = this.choices
123 .filter(Separator.exclude)
124 .filter((item) => !item.disabled);
125 return this.choices;
126 }
127};
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