wishthis/node_modules/inquirer/lib/objects/choices.js
2022-06-08 12:36:39 +02:00

123 lines
2.8 KiB
JavaScript

'use strict';
const assert = require('assert');
const _ = {
filter: require('lodash/filter'),
map: require('lodash/map'),
};
const Separator = require('./separator');
const Choice = require('./choice');
/**
* Choices collection
* Collection of multiple `choice` object
*/
module.exports = class Choices {
/** @param {Array} choices All `choice` to keep in the collection */
constructor(choices, answers) {
this.choices = choices.map((val) => {
if (val.type === 'separator') {
if (!(val instanceof Separator)) {
val = new Separator(val.line);
}
return val;
}
return new Choice(val, answers);
});
this.realChoices = this.choices
.filter(Separator.exclude)
.filter((item) => !item.disabled);
Object.defineProperty(this, 'length', {
get() {
return this.choices.length;
},
set(val) {
this.choices.length = val;
},
});
Object.defineProperty(this, 'realLength', {
get() {
return this.realChoices.length;
},
set() {
throw new Error('Cannot set `realLength` of a Choices collection');
},
});
}
/**
* Get a valid choice from the collection
* @param {Number} selector The selected choice index
* @return {Choice|Undefined} Return the matched choice or undefined
*/
getChoice(selector) {
assert(typeof selector === 'number');
return this.realChoices[selector];
}
/**
* Get a raw element from the collection
* @param {Number} selector The selected index value
* @return {Choice|Undefined} Return the matched choice or undefined
*/
get(selector) {
assert(typeof selector === 'number');
return this.choices[selector];
}
/**
* Match the valid choices against a where clause
* @param {Object} whereClause Lodash `where` clause
* @return {Array} Matching choices or empty array
*/
where(whereClause) {
return _.filter(this.realChoices, whereClause);
}
/**
* Pluck a particular key from the choices
* @param {String} propertyName Property name to select
* @return {Array} Selected properties
*/
pluck(propertyName) {
return _.map(this.realChoices, propertyName);
}
// Expose usual Array methods
indexOf(...args) {
return this.choices.indexOf(...args);
}
forEach(...args) {
return this.choices.forEach(...args);
}
filter(...args) {
return this.choices.filter(...args);
}
reduce(...args) {
return this.choices.reduce(...args);
}
find(func) {
return this.choices.find(func);
}
push(...args) {
const objs = args.map((val) => new Choice(val));
this.choices.push(...objs);
this.realChoices = this.choices
.filter(Separator.exclude)
.filter((item) => !item.disabled);
return this.choices;
}
};