Current Dev State

static/js/ketcher2/node_modules/inquirer/lib/prompts/base.js

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+/**
+ * Base prompt implementation
+ * Should be extended by prompt types.
+ */
+
+var rx = require('rx-lite');
+var _ = require('lodash');
+var chalk = require('chalk');
+var ansiRegex = require('ansi-regex');
+var runAsync = require('run-async');
+var Choices = require('../objects/choices');
+var ScreenManager = require('../utils/screen-manager');
+
+
+var Prompt = module.exports = function (question, rl, answers) {
+
+  // Setup instance defaults property
+  _.assign(this, {
+    answers: answers,
+    status : 'pending'
+  });
+
+  // Set defaults prompt options
+  this.opt = _.defaults(_.clone(question), {
+    validate: function () { return true; },
+    filter: function (val) { return val; },
+    when: function () { return true; }
+  });
+
+  // Check to make sure prompt requirements are there
+  if (!this.opt.message) {
+    this.throwParamError('message');
+  }
+  if (!this.opt.name) {
+    this.throwParamError('name');
+  }
+
+  // Normalize choices
+  if (Array.isArray(this.opt.choices)) {
+    this.opt.choices = new Choices(this.opt.choices, answers);
+  }
+
+  this.rl = rl;
+  this.screen = new ScreenManager(this.rl);
+};
+
+
+/**
+ * Start the Inquiry session and manage output value filtering
+ * @param  {Function} cb  Callback when prompt is done
+ * @return {this}
+ */
+
+Prompt.prototype.run = function( cb ) {
+  this._run(function (value) {
+    this.filter(value, cb);
+  }.bind(this));
+};
+
+// default noop (this one should be overwritten in prompts)
+Prompt.prototype._run = function (cb) { cb(); };
+
+
+/**
+ * Throw an error telling a required parameter is missing
+ * @param  {String} name Name of the missing param
+ * @return {Throw Error}
+ */
+
+Prompt.prototype.throwParamError = function (name) {
+  throw new Error('You must provide a `' + name + '` parameter');
+};
+
+/**
+ * Validate a given input
+ * @param  {String} value       Input string
+ * @param  {Function} callback  Pass `true` (if input is valid) or an error message as
+ *                              parameter.
+ * @return {null}
+ */
+
+Prompt.prototype.validate = function (input, cb) {
+  runAsync(this.opt.validate, cb, input);
+};
+
+/**
+ * Run the provided validation method each time a submit event occur.
+ * @param  {Rx.Observable} submit - submit event flow
+ * @return {Object}        Object containing two observables: `success` and `error`
+ */
+Prompt.prototype.handleSubmitEvents = function (submit) {
+  var self = this;
+  var validation = submit.flatMap(function (value) {
+    return rx.Observable.create(function (observer) {
+      runAsync(self.opt.validate, function (isValid) {
+        observer.onNext({ isValid: isValid, value: self.getCurrentValue(value) });
+        observer.onCompleted();
+      }, self.getCurrentValue(value), self.answers);
+    });
+  }).share();
+
+  var success = validation
+    .filter(function (state) { return state.isValid === true; })
+    .take(1);
+
+  var error = validation
+    .filter(function (state) { return state.isValid !== true; })
+    .takeUntil(success);
+
+  return {
+    success: success,
+    error: error
+  };
+};
+
+Prompt.prototype.getCurrentValue = function (value) {
+  return value;
+};
+
+/**
+ * Filter a given input before sending back
+ * @param  {String}   value     Input string
+ * @param  {Function} callback  Pass the filtered input as parameter.
+ * @return {null}
+ */
+
+Prompt.prototype.filter = function (input, cb) {
+  runAsync(this.opt.filter, cb, input);
+};
+
+/**
+ * Return the prompt line prefix
+ * @param  {String} [optionnal] String to concatenate to the prefix
+ * @return {String} prompt prefix
+ */
+
+Prompt.prototype.prefix = function (str) {
+  str || (str = '');
+  return chalk.green('?') + ' ' + str;
+};
+
+/**
+ * Return the prompt line suffix
+ * @param  {String} [optionnal] String to concatenate to the suffix
+ * @return {String} prompt suffix
+ */
+
+var reStrEnd = new RegExp('(?:' + ansiRegex().source + ')$|$');
+
+Prompt.prototype.suffix = function (str) {
+  str || (str = '');
+
+  // make sure we get the `:` inside the styles
+  if (str.length < 1 || /[a-z1-9]$/i.test(chalk.stripColor(str))) {
+    str = str.replace(reStrEnd, ':$&');
+  }
+
+  return str.trim() + ' ';
+};
+
+/**
+ * Generate the prompt question string
+ * @return {String} prompt question string
+ */
+
+Prompt.prototype.getQuestion = function () {
+  var message = chalk.green('?') + ' ' + chalk.bold(this.opt.message) + ' ';
+
+  // Append the default if available, and if question isn't answered
+  if ( this.opt.default != null && this.status !== 'answered' ) {
+    message += chalk.dim('('+ this.opt.default + ') ');
+  }
+
+  return message;
+};