From 394314dd3d2cbd6516c9f972dae83c9c308705a8 Mon Sep 17 00:00:00 2001
From: coderaiser <mnemonic.enemy@gmail.com>
Date: Sun, 31 May 2015 08:33:14 -0400
Subject: [PATCH] refactor(operation) create: add/remove listeners

---
 lib/client/operation.js | 23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/lib/client/operation.js b/lib/client/operation.js
index 2bf47412..2471ac7f 100644
--- a/lib/client/operation.js
+++ b/lib/client/operation.js
@@ -49,18 +49,19 @@
             spero(function() {
                 var parse   = function(fn) {
                     return function(data, callback) {
-                        var progress = function(value) {
+                        var listeners = {
+                            progress: function(value) {
                                 Images.setProgress(value);
                             },
                             
-                            end     = function() {
+                            end: function() {
                                 callback();
-                                spero.removeListener('progress', progress);
-                                spero.removeListener('error', error);
-                                spero.removeListener('end', end);
+                                events.forEach(function(name) {
+                                    spero.removeListener(name, listeners[name]);
+                                });
                             },
                             
-                            error   = function(data) {
+                            error: function(data) {
                                 var msg = data + '\n Continue?',
                                     is = confirm(msg);
                                 
@@ -68,15 +69,17 @@
                                     spero.continue();
                                 else
                                     spero.abort();
-                            };
+                            }
+                        },
+                        events = Object.keys(listeners);
                         
                         Images.show('top');
                         
                         fn(data.from, data.to, data.names);
                         
-                        spero.on('progress', progress);
-                        spero.on('end', end);
-                        spero.on('error', error);
+                        events.forEach(function(name) {
+                            spero.on(name, listeners[name]);
+                        });
                     };
                 };