StackGenVis: Alignment of Data, Algorithms, and Models for Stacking Ensemble Learning Using Performance Metrics https://doi.org/10.1109/TVCG.2020.3030352
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StackGenVis/frontend/node_modules/inquirer2/lib/prompts/confirm.js

102 lines
1.8 KiB

'use strict';
/**
* `confirm` type prompt
*/
var util = require('util');
var observe = require('../utils/events');
var utils = require('../utils/');
var Base = require('./base');
/**
* Module exports
*/
module.exports = Prompt;
/**
* Constructor
*/
function Prompt() {
Base.apply(this, arguments);
var rawDefault = true;
utils.extend(this.opt, {
filter: function(input) {
var value = rawDefault;
if (input != null && input !== '') {
value = /^y(es)?/i.test(input);
}
return value;
}.bind(this)
});
if (typeof this.opt.default === 'boolean') {
rawDefault = this.opt.default;
}
this.opt.default = rawDefault ? 'Y/n' : 'y/N';
return this;
}
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);
events.keypress.takeUntil(events.line).forEach(this.onKeypress.bind(this));
events.line.take(1).forEach(this.onEnd.bind(this));
// Init
this.render();
return this;
};
/**
* Render the prompt to screen
* @return {Prompt} self
*/
Prompt.prototype.render = function(answer) {
var message = this.getQuestion();
if (typeof answer === 'boolean') {
message += utils.chalk.cyan(answer ? 'Yes' : 'No');
} else {
message += this.rl.line;
}
this.screen.render(message);
return this;
};
/**
* When user press `enter` key
*/
Prompt.prototype.onEnd = function(input) {
this.status = 'answered';
var output = this.opt.filter(input);
this.render(output);
this.screen.done();
this.done(input); // send 'input' because the master class will refilter
};
/**
* When user press a key
*/
Prompt.prototype.onKeypress = function() {
this.render();
};