[polari] accountsMonitor: Add 'account-status-changed' signal

[Florian Müllner <fmuellner src gnome org>]

commit 8c9834f6062bc35ffe59c5e615ecb0dbbc4c4523
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Jul 25 01:06:51 2013 +0200

    accountsMonitor: Add 'account-status-changed' signal
    
    Connecting to a server can take a while (irc.gnome.org, hi!), so
    we should inform users that a connection is being established.
    This adds the necessary API to AccountsMonitor to enable us to
    implement this.

 src/accountsMonitor.js |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/src/accountsMonitor.js b/src/accountsMonitor.js
index e81b5ab..500388f 100644
--- a/src/accountsMonitor.js
+++ b/src/accountsMonitor.js
@@ -56,6 +56,11 @@ const AccountsMonitor = new Lang.Class({
         if (!this._shouldMonitorAccount(account))
             return;
 
+        account._statusNotifyId =
+            account.connect('notify::connection-status', Lang.bind(this,
+                function() {
+                    this.emit('account-status-changed', account);
+                }));
         this._accounts.push(account);
 
         this.emit('account-added', account);
@@ -68,6 +73,8 @@ const AccountsMonitor = new Lang.Class({
         if (index == -1)
             return;
 
+        account.disconnect(account._statusNotifyId);
+        delete account._statusNotifyId;
         this._accounts.splice(index, 1);
 
         this.emit('account-removed', account);