separate event broadcaster from wallet service

lib/eventbroadcaster.js

@@ -0,0 +1,23 @@
+var log = require('npmlog');
+log.debug = log.verbose;
+var inherits = require('inherits');
+var events = require('events');
+var nodeutil = require('util');
+
+function EventBroadcaster() {};
+
+nodeutil.inherits(EventBroadcaster, events.EventEmitter);
+
+EventBroadcaster.prototype.broadcast = function(service, args) {
+  this.emit(service, args);
+};
+
+var _eventBroadcasterInstance;
+EventBroadcaster.singleton = function() {
+  if (!_eventBroadcasterInstance) {
+    _eventBroadcasterInstance = new EventBroadcaster();
+  }
+  return _eventBroadcasterInstance;
+};
+
+module.exports = EventBroadcaster.singleton();

lib/server.js

@@ -4,9 +4,6 @@ var $ = require('preconditions').singleton();
 var async = require('async');
 var log = require('npmlog');
 log.debug = log.verbose;
-var inherits = require('inherits');
-var events = require('events');
-var nodeutil = require('util');
 
 var WalletUtils = require('bitcore-wallet-utils');
 var Bitcore = WalletUtils.Bitcore;
@@ -18,6 +15,7 @@ var Explorers = require('bitcore-explorers');
 var ClientError = require('./clienterror');
 var Utils = require('./utils');
 var Storage = require('./storage');
+var EventBroadcaster = require('./eventbroadcaster');
 
 var Wallet = require('./model/wallet');
 var Copayer = require('./model/copayer');
@@ -29,22 +27,6 @@ var initialized = false;
 var storage, blockExplorer;
 
 
-function EventBroadcaster() {};
-
-nodeutil.inherits(EventBroadcaster, events.EventEmitter);
-
-EventBroadcaster.prototype.broadcast = function(service, args) {
-  this.emit(service, args);
-};
-
-var _eventBroadcasterInstance;
-EventBroadcaster.singleton = function() {
-  if (!_eventBroadcasterInstance) {
-    _eventBroadcasterInstance = new EventBroadcaster();
-  }
-  return _eventBroadcasterInstance;
-};
-
 /**
  * Creates an instance of the Bitcore Wallet Service.
  * @constructor
@@ -58,6 +40,10 @@ function WalletService() {
   this.notifyTicker = 0;
 };
 
+WalletService.onNotification = function(func) {
+  EventBroadcaster.on('notification', func);
+};
+
 /**
  * Initializes global settings for all instances.
  * @param {Object} opts
@@ -175,8 +161,13 @@ WalletService.prototype._verifySignature = function(text, signature, pubKey) {
   return WalletUtils.verifyMessage(text, signature, pubKey);
 };
 
+/**
+ * _emit
+ *
+ * @param {Object} args
+ */
 WalletService.prototype._emit = function(args) {
-  EventBroadcaster.singleton().broadcast(this, args);
+  EventBroadcaster.broadcast(this, args);
 };
 
 /**