1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_OBSERVER_H_ 6 #define CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_OBSERVER_H_ 7 #pragma once 8 9 // Various UI components such as the New Tab page can be driven by observing 10 // the ProfileSyncService through this interface. 11 class ProfileSyncServiceObserver { 12 public: 13 // When one of the following events occurs, OnStateChanged() is called. 14 // Observers should query the service to determine what happened. 15 // - We initialized successfully. 16 // - There was an authentication error and the user needs to reauthenticate. 17 // - The sync servers are unavailable at this time. 18 // - Credentials are now in flight for authentication. 19 virtual void OnStateChanged() = 0; 20 protected: 21 virtual ~ProfileSyncServiceObserver() { } 22 }; 23 24 #endif // CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_OBSERVER_H_ 25
