1 // Copyright 2014 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_SYNC_ERROR_CONTROLLER_H_ 6 #define CHROME_BROWSER_SYNC_SYNC_ERROR_CONTROLLER_H_ 7 8 #include "base/basictypes.h" 9 #include "base/compiler_specific.h" 10 #include "base/observer_list.h" 11 #include "chrome/browser/sync/profile_sync_service_observer.h" 12 13 class Profile; 14 class ProfileSyncService; 15 16 // Keep track of sync errors and expose them to observers in the UI. 17 class SyncErrorController : public ProfileSyncServiceObserver { 18 public: 19 // The observer class for SyncErrorController lets the controller notify 20 // observers when an error arises or changes. 21 class Observer { 22 public: 23 virtual ~Observer() {} 24 virtual void OnErrorChanged() = 0; 25 }; 26 27 explicit SyncErrorController(ProfileSyncService* service); 28 virtual ~SyncErrorController(); 29 30 // True if there exists an error worth elevating to the user. 31 bool HasError(); 32 33 void AddObserver(Observer* observer); 34 void RemoveObserver(Observer* observer); 35 36 // ProfileSyncServiceObserver: 37 virtual void OnStateChanged() OVERRIDE; 38 39 private: 40 ProfileSyncService* service_; 41 ObserverList<Observer, true> observer_list_; 42 43 DISALLOW_COPY_AND_ASSIGN(SyncErrorController); 44 }; 45 46 #endif // CHROME_BROWSER_SYNC_SYNC_ERROR_CONTROLLER_H_ 47
