Wrap message receiver for minimum api exposure

Initializing a message receiver opens the socket and starts listening
right away rather than requiring a separate call to connect. The only
other publicly accessible method is to query the socket status.

// FREEBIE

js/background.js

@@ -43,15 +43,14 @@
         function init() {
             if (!textsecure.registration.isDone()) { return; }
 
-            // initialize the socket and start listening for messages
-            messageReceiver = new textsecure.MessageReceiver(window);
-            window.addEventListener('contact', onContactReceived);
-            window.addEventListener('receipt', onDeliveryReceipt);
             window.addEventListener('message', onMessageReceived);
+            window.addEventListener('receipt', onDeliveryReceipt);
+            window.addEventListener('contact', onContactReceived);
             window.addEventListener('group', onGroupReceived);
             window.addEventListener('sent', onSentMessage);
             window.addEventListener('error', onError);
-            messageReceiver.connect();
+            // initialize the socket and start listening for messages
+            messageReceiver = new textsecure.MessageReceiver(window);
         }
 
         function onContactReceived(contactInfo) {

js/libtextsecure.js

@@ -39469,6 +39469,7 @@ function generateKeys(count, progressCallback) {
         } else {
             throw new TypeError('MessageReceiver expected an EventTarget');
         }
+        this.connect();
     }
 
     MessageReceiver.prototype = {
@@ -39624,8 +39625,16 @@ function generateKeys(count, progressCallback) {
         }
     };
 
-    textsecure.MessageReceiver = MessageReceiver;
+    textsecure.MessageReceiver = function (eventTarget) {
+        var messageReceiver = new MessageReceiver(eventTarget);
+        this.getStatus = function() {
+            return messageReceiver.getStatus();
+        }
+    }
 
+    textsecure.MessageReceiver.prototype = {
+        constructor: textsecure.MessageReceiver
+    };
 
 }());
 

libtextsecure/message_receiver.js

@@ -24,6 +24,7 @@
         } else {
             throw new TypeError('MessageReceiver expected an EventTarget');
         }
+        this.connect();
     }
 
     MessageReceiver.prototype = {
@@ -179,7 +180,15 @@
         }
     };
 
-    textsecure.MessageReceiver = MessageReceiver;
+    textsecure.MessageReceiver = function (eventTarget) {
+        var messageReceiver = new MessageReceiver(eventTarget);
+        this.getStatus = function() {
+            return messageReceiver.getStatus();
+        }
+    }
 
+    textsecure.MessageReceiver.prototype = {
+        constructor: textsecure.MessageReceiver
+    };
 
 }());