forked from zhurui/management
107 lines
1.8 KiB
JavaScript
107 lines
1.8 KiB
JavaScript
|
/**
|
||
|
|
* `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;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
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(output);
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* When user press a key
|
||
|
|
*/
|
||
|
|
|
||
|
|
Prompt.prototype.onKeypress = function () {
|
||
|
|
this.render();
|
||
|
|
};
|