sync: Route local sessions events to SessionsSyncManager

chrome/browser/sync/sessions2/notification_service_sessions_router.h

+// Copyright 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_SYNC_SESSIONS2_NOTIFICATION_SERVICE_SESSIONS_ROUTER_H_
+#define CHROME_BROWSER_SYNC_SESSIONS2_NOTIFICATION_SERVICE_SESSIONS_ROUTER_H_
+
+#include "base/memory/weak_ptr.h"
+#include "chrome/browser/sync/sessions2/sessions_sync_manager.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
+
+class Profile;
+
+namespace content {
+class WebContents;
+}
+
+namespace browser_sync {
+
+// A SessionsSyncManager::LocalEventRouter that drives session sync via
+// the NotificationService.
+class NotificationServiceSessionsRouter
+    : public LocalSessionEventRouter,
+      public content::NotificationObserver {
+ public:
+  NotificationServiceSessionsRouter(
+      Profile* profile,
+      const syncer::SyncableService::StartSyncFlare& flare);
+  virtual ~NotificationServiceSessionsRouter();
+
+  // content::NotificationObserver implementation.
+  // BrowserSessionProvider -> sync API model change application.
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
+  // SessionsSyncManager::LocalEventRouter implementation.
+  virtual void StartRoutingTo(LocalSessionEventHandler* handler) OVERRIDE;
+  virtual void Stop() OVERRIDE;
+
+ private:
+  // Called when the URL visited in |web_contents| was blocked by the
+  // ManagedUserService. We forward this on to our handler_ via the
+  // normal OnLocalTabModified, but pass through here via a WeakPtr
+  // callback from ManagedUserService and to extract the tab delegate
+  // from WebContents.
+  void OnNavigationBlocked(content::WebContents* web_contents);
+
+  LocalSessionEventHandler* handler_;
+  content::NotificationRegistrar registrar_;
+  Profile* const profile_;
+  syncer::SyncableService::StartSyncFlare flare_;
+  base::WeakPtrFactory<NotificationServiceSessionsRouter> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(NotificationServiceSessionsRouter);
+};
+
+}  // namespace browser_sync
+
+#endif  // CHROME_BROWSER_SYNC_SESSIONS2_NOTIFICATION_SERVICE_SESSIONS_ROUTER_H_