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Contents
/**
* `confirm` type prompt
*/
var _ = require("lodash");
var util = require("util");
var chalk = require("chalk");
var Base = require("./base");
var observe = require("../utils/events");
/**
* Module exports
*/
module.exports = Prompt;
/**
* Constructor
*/
function Prompt() {
Base.apply( this, arguments );
var rawDefault = true;
_.extend( this.opt, {
filter: function( input ) {
var value = rawDefault;
if ( input != null && input !== "" ) {
value = /^y(es)?/i.test(input);
}
return value;
}.bind(this)
});
if ( _.isBoolean(this.opt.default) ) {
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 += 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();
};
Version data entries
110 entries across 110 versions & 5 rubygems