diff options
Diffstat (limited to 'tools/node_modules/eslint/node_modules/inquirer/lib/prompts/rawlist.js')
-rw-r--r-- | tools/node_modules/eslint/node_modules/inquirer/lib/prompts/rawlist.js | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/tools/node_modules/eslint/node_modules/inquirer/lib/prompts/rawlist.js b/tools/node_modules/eslint/node_modules/inquirer/lib/prompts/rawlist.js new file mode 100644 index 0000000000..15e99110b6 --- /dev/null +++ b/tools/node_modules/eslint/node_modules/inquirer/lib/prompts/rawlist.js @@ -0,0 +1,179 @@ +/** + * `rawlist` type prompt + */ + +var _ = require('lodash'); +var util = require('util'); +var chalk = require('chalk'); +var Base = require('./base'); +var Separator = require('../objects/separator'); +var observe = require('../utils/events'); +var Paginator = require('../utils/paginator'); + +/** + * Module exports + */ + +module.exports = Prompt; + +/** + * Constructor + */ + +function Prompt() { + Base.apply(this, arguments); + + 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 = this.rawDefault = def; + } + + // Make sure no default is set (so it won't be printed) + this.opt.default = null; + + this.paginator = new Paginator(); +} +util.inherits(Prompt, Base); + +/** + * Start the Inquiry session + * @param {Function} cb Callback when prompt is done + * @return {this} + */ + +Prompt.prototype._run = function (cb) { + this.done = cb; + + // Once user confirm (enter key) + var events = observe(this.rl); + var submit = events.line.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.keypress.takeUntil(validation.success).forEach(this.onKeypress.bind(this)); + + // Init the prompt + this.render(); + + return this; +}; + +/** + * Render the prompt to screen + * @return {Prompt} self + */ + +Prompt.prototype.render = function (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 += 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 + */ + +Prompt.prototype.getCurrentValue = function (index) { + if (index == null || index === '') { + index = this.rawDefault; + } else { + index -= 1; + } + + var choice = this.opt.choices.getChoice(index); + return choice ? choice.value : null; +}; + +Prompt.prototype.onEnd = function (state) { + this.status = 'answered'; + this.answer = state.value; + + // Re-render prompt + this.render(); + + this.screen.done(); + this.done(state.value); +}; + +Prompt.prototype.onError = function () { + this.render('Please enter a valid index'); +}; + +/** + * When user press a key + */ + +Prompt.prototype.onKeypress = function () { + 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(); +}; + +/** + * 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; +} |