--- /dev/null
+'use strict';
+/**
+ * `rawlist` type prompt
+ */
+
+var _ = {
+ extend: require('lodash/extend'),
+ isNumber: require('lodash/isNumber'),
+ findIndex: require('lodash/findIndex'),
+};
+var chalk = require('chalk');
+var { map, takeUntil } = require('rxjs/operators');
+var Base = require('./base');
+var Separator = require('../objects/separator');
+var observe = require('../utils/events');
+var Paginator = require('../utils/paginator');
+var incrementListIndex = require('../utils/incrementListIndex');
+
+class RawListPrompt extends Base {
+ constructor(questions, rl, answers) {
+ super(questions, rl, answers);
+
+ if (!this.opt.choices) {
+ this.throwParamError('choices');
+ }
+
+ this.opt.validChoices = this.opt.choices.filter(Separator.exclude);
+
+ this.selected = 0;
+ this.rawDefault = 0;
+
+ _.extend(this.opt, {
+ validate: function (val) {
+ return val != null;
+ },
+ });
+
+ var def = this.opt.default;
+ if (_.isNumber(def) && def >= 0 && def < this.opt.choices.realLength) {
+ this.selected = def;
+ this.rawDefault = def;
+ } else if (!_.isNumber(def) && def != null) {
+ let index = _.findIndex(this.opt.choices.realChoices, ({ value }) => value === def);
+ let safeIndex = Math.max(index, 0);
+ this.selected = safeIndex;
+ this.rawDefault = safeIndex;
+ }
+
+ // Make sure no default is set (so it won't be printed)
+ this.opt.default = null;
+
+ this.paginator = new Paginator();
+ }
+
+ /**
+ * Start the Inquiry session
+ * @param {Function} cb Callback when prompt is done
+ * @return {this}
+ */
+
+ _run(cb) {
+ this.done = cb;
+
+ // Once user confirm (enter key)
+ var events = observe(this.rl);
+ var submit = events.line.pipe(map(this.getCurrentValue.bind(this)));
+
+ var validation = this.handleSubmitEvents(submit);
+ validation.success.forEach(this.onEnd.bind(this));
+ validation.error.forEach(this.onError.bind(this));
+
+ events.normalizedUpKey.pipe(takeUntil(events.line)).forEach(this.onUpKey.bind(this));
+ events.normalizedDownKey
+ .pipe(takeUntil(events.line))
+ .forEach(this.onDownKey.bind(this));
+ events.keypress
+ .pipe(takeUntil(validation.success))
+ .forEach(this.onKeypress.bind(this));
+ // Init the prompt
+ this.render();
+
+ return this;
+ }
+
+ /**
+ * Render the prompt to screen
+ * @return {RawListPrompt} self
+ */
+
+ render(error) {
+ // Render question
+ var message = this.getQuestion();
+ var bottomContent = '';
+
+ if (this.status === 'answered') {
+ message += chalk.cyan(this.answer);
+ } else {
+ var choicesStr = renderChoices(this.opt.choices, this.selected);
+ message +=
+ '\n' + this.paginator.paginate(choicesStr, this.selected, this.opt.pageSize);
+ message += '\n Answer: ';
+ }
+ message += this.rl.line;
+
+ if (error) {
+ bottomContent = '\n' + chalk.red('>> ') + error;
+ }
+
+ this.screen.render(message, bottomContent);
+ }
+
+ /**
+ * When user press `enter` key
+ */
+
+ getCurrentValue(index) {
+ if (index == null) {
+ index = this.rawDefault;
+ } else if (index === '') {
+ index = this.selected;
+ } else {
+ index -= 1;
+ }
+
+ var choice = this.opt.choices.getChoice(index);
+ return choice ? choice.value : null;
+ }
+
+ onEnd(state) {
+ this.status = 'answered';
+ this.answer = state.value;
+
+ // Re-render prompt
+ this.render();
+
+ this.screen.done();
+ this.done(state.value);
+ }
+
+ onError() {
+ this.render('Please enter a valid index');
+ }
+
+ /**
+ * When user press a key
+ */
+
+ onKeypress() {
+ var index = this.rl.line.length ? Number(this.rl.line) - 1 : 0;
+
+ if (this.opt.choices.getChoice(index)) {
+ this.selected = index;
+ } else {
+ this.selected = undefined;
+ }
+ this.render();
+ }
+
+ /**
+ * When user press up key
+ */
+
+ onUpKey() {
+ this.onArrowKey('up');
+ }
+
+ /**
+ * When user press down key
+ */
+
+ onDownKey() {
+ this.onArrowKey('down');
+ }
+
+ /**
+ * When user press up or down key
+ * @param {String} type Arrow type: up or down
+ */
+
+ onArrowKey(type) {
+ this.selected = incrementListIndex(this.selected, type, this.opt);
+ this.rl.line = String(this.selected + 1);
+ }
+}
+
+/**
+ * Function for rendering list choices
+ * @param {Number} pointer Position of the pointer
+ * @return {String} Rendered content
+ */
+
+function renderChoices(choices, pointer) {
+ var output = '';
+ var separatorOffset = 0;
+
+ choices.forEach(function (choice, i) {
+ output += '\n ';
+
+ if (choice.type === 'separator') {
+ separatorOffset++;
+ output += ' ' + choice;
+ return;
+ }
+
+ var index = i - separatorOffset;
+ var display = index + 1 + ') ' + choice.name;
+ if (index === pointer) {
+ display = chalk.cyan(display);
+ }
+
+ output += display;
+ });
+
+ return output;
+}
+
+module.exports = RawListPrompt;