[Sync] Turn notifier::PushClient into an interface

jingle/notifier/listener/xmpp_push_client.h

Index: jingle/notifier/listener/xmpp_push_client.h
diff --git a/jingle/notifier/listener/xmpp_push_client.h b/jingle/notifier/listener/xmpp_push_client.h
new file mode 100644
index 0000000000000000000000000000000000000000..9c4a6f3447f109b46c3ebe7813757411b17e6d09
--- /dev/null
+++ b/jingle/notifier/listener/xmpp_push_client.h
@@ -0,0 +1,87 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef JINGLE_NOTIFIER_LISTENER_XMPP_PUSH_CLIENT_H_
+#define JINGLE_NOTIFIER_LISTENER_XMPP_PUSH_CLIENT_H_
+
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
+#include "base/observer_list.h"
+#include "base/threading/non_thread_safe.h"
+#include "jingle/notifier/base/notifier_options.h"
+#include "jingle/notifier/communicator/login.h"
+#include "jingle/notifier/listener/notification_defines.h"
+#include "jingle/notifier/listener/push_client.h"
+#include "jingle/notifier/listener/push_notifications_listen_task.h"
+#include "jingle/notifier/listener/push_notifications_subscribe_task.h"
+#include "talk/xmpp/xmppclientsettings.h"
+
+namespace buzz {
+class XmppTaskParentInterface;
+}  // namespace buzz
+
+namespace notifier {
+
+// This class implements a client for the XMPP google:push protocol.
+//
+// This class must be used on a single thread.
+class XmppPushClient :
+      public PushClient,
+      public LoginDelegate,
+      public PushNotificationsListenTaskDelegate,
+      public PushNotificationsSubscribeTaskDelegate {
+ public:
+  explicit XmppPushClient(const NotifierOptions& notifier_options);
+  virtual ~XmppPushClient();
+
+  // PushClient implementation.
+  virtual void AddObserver(PushClientObserver* observer) OVERRIDE;
+  virtual void RemoveObserver(PushClientObserver* observer) OVERRIDE;
+  virtual void UpdateSubscriptions(
+      const SubscriptionList& subscriptions) OVERRIDE;
+  virtual void UpdateCredentials(
+      const std::string& email, const std::string& token) OVERRIDE;
+  virtual void SendNotification(const Notification& notification) OVERRIDE;
+
+  // Login::Delegate implementation.
+  virtual void OnConnect(
+      base::WeakPtr<buzz::XmppTaskParentInterface> base_task) OVERRIDE;
+  virtual void OnDisconnect() OVERRIDE;
+
+  // PushNotificationsListenTaskDelegate implementation.
+  virtual void OnNotificationReceived(
+      const Notification& notification) OVERRIDE;
+
+  // PushNotificationsSubscribeTaskDelegate implementation.
+  virtual void OnSubscribed() OVERRIDE;
+  virtual void OnSubscriptionError() OVERRIDE;
+
+ private:
+  base::NonThreadSafe non_thread_safe_;
+  const NotifierOptions notifier_options_;
+  ObserverList<PushClientObserver> observers_;
+
+  // XMPP connection settings.
+  SubscriptionList subscriptions_;
+  buzz::XmppClientSettings xmpp_settings_;
+
+  scoped_ptr<notifier::Login> login_;
+
+  // The XMPP connection.
+  base::WeakPtr<buzz::XmppTaskParentInterface> base_task_;
+
+  std::vector<Notification> pending_notifications_to_send_;
+
+  DISALLOW_COPY_AND_ASSIGN(XmppPushClient);
+};
+
+}  // namespace notifier
+
+#endif  // JINGLE_NOTIFIER_LISTENER_XMPP_PUSH_CLIENT_H_