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56 lines
1.2 KiB
56 lines
1.2 KiB
'use strict';
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var _ = require('lodash');
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var readlineFacade = require('readline2');
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/**
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* Base interface class other can inherits from
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*/
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var UI = module.exports = function (opt) {
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// Instantiate the Readline interface
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// @Note: Don't reassign if already present (allow test to override the Stream)
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if (!this.rl) {
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this.rl = readlineFacade.createInterface(_.extend({
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terminal: true
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}, opt));
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}
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this.rl.resume();
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this.onForceClose = this.onForceClose.bind(this);
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// Make sure new prompt start on a newline when closing
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this.rl.on('SIGINT', this.onForceClose);
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process.on('exit', this.onForceClose);
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};
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/**
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* Handle the ^C exit
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* @return {null}
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*/
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UI.prototype.onForceClose = function () {
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this.close();
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console.log('\n'); // Line return
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};
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/**
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* Close the interface and cleanup listeners
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*/
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UI.prototype.close = function () {
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// Remove events listeners
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this.rl.removeListener('SIGINT', this.onForceClose);
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process.removeListener('exit', this.onForceClose);
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// Restore prompt functionnalities
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this.rl.output.unmute();
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// Close the readline
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this.rl.output.end();
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this.rl.pause();
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this.rl.close();
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this.rl = null;
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};
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