285 lines
8.5 KiB
JavaScript
285 lines
8.5 KiB
JavaScript
'use strict';
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function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }
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function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }
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const color = require('kleur');
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const Prompt = require('./prompt');
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const _require = require('sisteransi'),
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erase = _require.erase,
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cursor = _require.cursor;
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const _require2 = require('../util'),
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style = _require2.style,
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clear = _require2.clear,
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figures = _require2.figures,
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wrap = _require2.wrap,
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entriesToDisplay = _require2.entriesToDisplay;
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const getVal = (arr, i) => arr[i] && (arr[i].value || arr[i].title || arr[i]);
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const getTitle = (arr, i) => arr[i] && (arr[i].title || arr[i].value || arr[i]);
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const getIndex = (arr, valOrTitle) => {
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const index = arr.findIndex(el => el.value === valOrTitle || el.title === valOrTitle);
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return index > -1 ? index : undefined;
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};
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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 {Array} opts.choices Array of auto-complete choices objects
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* @param {Function} [opts.suggest] Filter function. Defaults to sort by title
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* @param {Number} [opts.limit=10] Max number of results to show
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* @param {Number} [opts.cursor=0] Cursor start position
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* @param {String} [opts.style='default'] Render style
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* @param {String} [opts.fallback] Fallback message - initial to default value
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* @param {String} [opts.initial] Index of the default value
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* @param {Boolean} [opts.clearFirst] The first ESCAPE keypress will clear the input
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* @param {Stream} [opts.stdin] The Readable stream to listen to
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* @param {Stream} [opts.stdout] The Writable stream to write readline data to
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* @param {String} [opts.noMatches] The no matches found label
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*/
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class AutocompletePrompt extends Prompt {
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constructor(opts = {}) {
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super(opts);
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this.msg = opts.message;
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this.suggest = opts.suggest;
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this.choices = opts.choices;
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this.initial = typeof opts.initial === 'number' ? opts.initial : getIndex(opts.choices, opts.initial);
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this.select = this.initial || opts.cursor || 0;
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this.i18n = {
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noMatches: opts.noMatches || 'no matches found'
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};
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this.fallback = opts.fallback || this.initial;
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this.clearFirst = opts.clearFirst || false;
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this.suggestions = [];
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this.input = '';
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this.limit = opts.limit || 10;
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this.cursor = 0;
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this.transform = style.render(opts.style);
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this.scale = this.transform.scale;
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this.render = this.render.bind(this);
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this.complete = this.complete.bind(this);
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this.clear = clear('', this.out.columns);
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this.complete(this.render);
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this.render();
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}
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set fallback(fb) {
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this._fb = Number.isSafeInteger(parseInt(fb)) ? parseInt(fb) : fb;
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}
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get fallback() {
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let choice;
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if (typeof this._fb === 'number') choice = this.choices[this._fb];else if (typeof this._fb === 'string') choice = {
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title: this._fb
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};
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return choice || this._fb || {
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title: this.i18n.noMatches
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};
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}
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moveSelect(i) {
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this.select = i;
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if (this.suggestions.length > 0) this.value = getVal(this.suggestions, i);else this.value = this.fallback.value;
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this.fire();
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}
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complete(cb) {
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var _this = this;
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return _asyncToGenerator(function* () {
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const p = _this.completing = _this.suggest(_this.input, _this.choices);
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const suggestions = yield p;
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if (_this.completing !== p) return;
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_this.suggestions = suggestions.map((s, i, arr) => ({
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title: getTitle(arr, i),
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value: getVal(arr, i),
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description: s.description
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}));
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_this.completing = false;
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const l = Math.max(suggestions.length - 1, 0);
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_this.moveSelect(Math.min(l, _this.select));
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cb && cb();
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})();
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}
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reset() {
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this.input = '';
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this.complete(() => {
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this.moveSelect(this.initial !== void 0 ? this.initial : 0);
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this.render();
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});
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this.render();
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}
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exit() {
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if (this.clearFirst && this.input.length > 0) {
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this.reset();
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} else {
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this.done = this.exited = 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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}
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abort() {
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this.done = this.aborted = true;
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this.exited = 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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submit() {
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this.done = true;
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this.aborted = this.exited = 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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_(c, key) {
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let s1 = this.input.slice(0, this.cursor);
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let s2 = this.input.slice(this.cursor);
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this.input = `${s1}${c}${s2}`;
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this.cursor = s1.length + 1;
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this.complete(this.render);
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this.render();
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}
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delete() {
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if (this.cursor === 0) return this.bell();
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let s1 = this.input.slice(0, this.cursor - 1);
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let s2 = this.input.slice(this.cursor);
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this.input = `${s1}${s2}`;
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this.complete(this.render);
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this.cursor = this.cursor - 1;
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this.render();
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}
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deleteForward() {
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if (this.cursor * this.scale >= this.rendered.length) return this.bell();
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let s1 = this.input.slice(0, this.cursor);
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let s2 = this.input.slice(this.cursor + 1);
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this.input = `${s1}${s2}`;
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this.complete(this.render);
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this.render();
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}
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first() {
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this.moveSelect(0);
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this.render();
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}
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last() {
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this.moveSelect(this.suggestions.length - 1);
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this.render();
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}
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up() {
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if (this.select === 0) {
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this.moveSelect(this.suggestions.length - 1);
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} else {
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this.moveSelect(this.select - 1);
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}
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this.render();
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}
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down() {
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if (this.select === this.suggestions.length - 1) {
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this.moveSelect(0);
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} else {
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this.moveSelect(this.select + 1);
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}
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this.render();
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}
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next() {
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if (this.select === this.suggestions.length - 1) {
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this.moveSelect(0);
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} else this.moveSelect(this.select + 1);
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this.render();
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}
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nextPage() {
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this.moveSelect(Math.min(this.select + this.limit, this.suggestions.length - 1));
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this.render();
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}
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prevPage() {
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this.moveSelect(Math.max(this.select - this.limit, 0));
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this.render();
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}
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left() {
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if (this.cursor <= 0) return this.bell();
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this.cursor = this.cursor - 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) return this.bell();
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this.cursor = this.cursor + 1;
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this.render();
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}
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renderOption(v, hovered, isStart, isEnd) {
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let desc;
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let prefix = isStart ? figures.arrowUp : isEnd ? figures.arrowDown : ' ';
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let title = hovered ? color.cyan().underline(v.title) : v.title;
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prefix = (hovered ? color.cyan(figures.pointer) + ' ' : ' ') + prefix;
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if (v.description) {
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desc = ` - ${v.description}`;
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if (prefix.length + title.length + desc.length >= this.out.columns || v.description.split(/\r?\n/).length > 1) {
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desc = '\n' + wrap(v.description, {
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margin: 3,
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width: this.out.columns
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});
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}
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}
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return prefix + ' ' + title + color.gray(desc || '');
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}
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render() {
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if (this.closed) return;
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if (this.firstRender) this.out.write(cursor.hide);else this.out.write(clear(this.outputText, this.out.columns));
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super.render();
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let _entriesToDisplay = entriesToDisplay(this.select, this.choices.length, this.limit),
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startIndex = _entriesToDisplay.startIndex,
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endIndex = _entriesToDisplay.endIndex;
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this.outputText = [style.symbol(this.done, this.aborted, this.exited), color.bold(this.msg), style.delimiter(this.completing), this.done && this.suggestions[this.select] ? this.suggestions[this.select].title : this.rendered = this.transform.render(this.input)].join(' ');
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if (!this.done) {
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const suggestions = this.suggestions.slice(startIndex, endIndex).map((item, i) => this.renderOption(item, this.select === i + startIndex, i === 0 && startIndex > 0, i + startIndex === endIndex - 1 && endIndex < this.choices.length)).join('\n');
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this.outputText += `\n` + (suggestions || color.gray(this.fallback.title));
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}
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this.out.write(erase.line + cursor.to(0) + this.outputText);
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}
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}
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module.exports = AutocompletePrompt; |