Commit InvalidationService implementations

chrome/browser/invalidation/android_invalidation_service.h

+// Copyright (c) 2013 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 CHROME_BROWSER_INVALIDATION_ANDROID_INVALIDATION_SERVICE_H_
+#define CHROME_BROWSER_INVALIDATION_ANDROID_INVALIDATION_SERVICE_H_
+
+#include "base/basictypes.h"
+#include "base/threading/non_thread_safe.h"
+#include "chrome/browser/invalidation/invalidation_frontend.h"
+#include "chrome/browser/profiles/profile_keyed_service.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
+#include "sync/notifier/invalidator_registrar.h"
+
+class Profile;
+
+namespace invalidation {
+
+// This InvalidationService is used to deliver invalidations on Android.  The
+// Android operating system has its own mechanisms for delivering invalidations.
+// This class uses the NotificationService to communicate with a thin wrapper
+// around Android's invalidations service.
+class AndroidInvalidationService
+    : public base::NonThreadSafe,
+      public ProfileKeyedService,
+      public InvalidationFrontend,
+      public content::NotificationObserver {
+ public:
+  explicit AndroidInvalidationService(Profile* profile);
+  virtual ~AndroidInvalidationService();
+
+  // InvalidationService implementation.
+  //
+  // Note that this implementation does not properly support Ack-tracking,
+  // fetching the invalidator state, or querying the client's ID.  Support for
+  // exposing the client ID should be available soon; see crbug.com/172391.
+  virtual void RegisterInvalidationHandler(
+      syncer::InvalidationHandler* handler) OVERRIDE;
+  virtual void UpdateRegisteredInvalidationIds(
+      syncer::InvalidationHandler* handler,
+      const syncer::ObjectIdSet& ids) OVERRIDE;
+  virtual void UnregisterInvalidationHandler(
+      syncer::InvalidationHandler* handler) OVERRIDE;
+  virtual void AcknowledgeInvalidation(
+      const invalidation::ObjectId& id,
+      const syncer::AckHandle& ack_handle) OVERRIDE;
+  virtual syncer::InvalidatorState GetInvalidatorState() const OVERRIDE;
+  virtual std::string GetInvalidatorClientId() const;
+
+  // content::NotificationObserver implementation.
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
+  // The AndroidInvalidationService always reports that it is enabled.
+  // This is used only by unit tests.
+  void TriggerStateChangeForTest(syncer::InvalidatorState state);
+
+ private:
+  syncer::InvalidatorRegistrar invalidator_registrar_;
+  content::NotificationRegistrar registrar_;
+  syncer::InvalidatorState invalidator_state_;
+
+  DISALLOW_COPY_AND_ASSIGN(AndroidInvalidationService);
+};
+
+}  // namespace invalidation
+
+#endif  // CHROME_BROWSER_INVALIDATION_ANDROID_INVALIDATION_SERVICE_H_