Implemented initial version of server-issued notification client.

chrome/browser/sync/notifier/chrome_invalidation_client.h

+// Copyright (c) 2010 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.
+//
+// A simple wrapper around invalidation::InvalidationClient that
+// handles all the startup/shutdown details and hookups.
+
+#ifndef CHROME_BROWSER_SYNC_NOTIFIER_CHROME_INVALIDATION_CLIENT_H_
+#define CHROME_BROWSER_SYNC_NOTIFIER_CHROME_INVALIDATION_CLIENT_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/non_thread_safe.h"
+#include "base/scoped_ptr.h"
+#include "chrome/browser/sync/notifier/chrome_system_resources.h"
+#include "google/cacheinvalidation/invalidation-client.h"
+
+namespace buzz {
+class XmppClient;
+}  // namespace
+
+namespace sync_notifier {
+
+class CacheInvalidationPacketHandler;
+
+// TODO(akalin): Hook this up to a NetworkChangeNotifier so we can
+// properly notify invalidation_client_.
+
+class ChromeInvalidationClient {
+ public:
+  ChromeInvalidationClient();
+
+  ~ChromeInvalidationClient();
+
+  // Does not take ownership of |listener| nor |xmpp_client|.
+  void Start(
+      const std::string& app_name,
+      invalidation::InvalidationListener* listener,
+      buzz::XmppClient* xmpp_client);
+
+  void Stop();
+
+  // The following functions must only be called between calls to
+  // Start() and Stop().  See invalidation-client.h for documentation.
+
+  void Register(const invalidation::ObjectId& oid,
+                invalidation::RegistrationCallback* callback);
+
+  void Unregister(const invalidation::ObjectId& oid,
+                  invalidation::RegistrationCallback* callback);
+
+ private:
+  NonThreadSafe non_thread_safe_;
+  ChromeSystemResources chrome_system_resources_;
+  scoped_ptr<invalidation::InvalidationClient> invalidation_client_;
+  scoped_ptr<CacheInvalidationPacketHandler>
+      cache_invalidation_packet_handler_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeInvalidationClient);
+};
+
+}  // namespace sync_notifier
+
+#endif  // CHROME_BROWSER_SYNC_NOTIFIER_CHROME_INVALIDATION_CLIENT_H_