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 SYNC_INTERNAL_API_SYNC_BACKUP_MANAGER_H_ 6 #define SYNC_INTERNAL_API_SYNC_BACKUP_MANAGER_H_ 7 8 #include <set> 9 10 #include "sync/internal_api/sync_rollback_manager_base.h" 11 #include "url/gurl.h" 12 13 namespace syncer { 14 15 // SyncBackupManager runs before user signs in to sync to back up user's data 16 // before sync starts. The data that's backed up can be used to restore user's 17 // settings to pre-sync state. 18 class SYNC_EXPORT_PRIVATE SyncBackupManager : public SyncRollbackManagerBase { 19 public: 20 SyncBackupManager(); 21 virtual ~SyncBackupManager(); 22 23 // SyncManager implementation. 24 virtual void Init(InitArgs* args) OVERRIDE; 25 virtual void SaveChanges() OVERRIDE; 26 virtual SyncStatus GetDetailedStatus() const OVERRIDE; 27 virtual void ShutdownOnSyncThread(ShutdownReason reason) OVERRIDE; 28 29 // DirectoryChangeDelegate implementation. 30 virtual ModelTypeSet HandleTransactionEndingChangeEvent( 31 const syncable::ImmutableWriteTransactionInfo& write_transaction_info, 32 syncable::BaseTransaction* trans) OVERRIDE; 33 34 virtual void RegisterDirectoryTypeDebugInfoObserver( 35 syncer::TypeDebugInfoObserver* observer) OVERRIDE; 36 virtual void UnregisterDirectoryTypeDebugInfoObserver( 37 syncer::TypeDebugInfoObserver* observer) OVERRIDE; 38 virtual bool HasDirectoryTypeDebugInfoObserver( 39 syncer::TypeDebugInfoObserver* observer) OVERRIDE; 40 virtual void RequestEmitDebugInfo() OVERRIDE; 41 42 private: 43 // Replaces local IDs with server IDs and clear unsynced bit of modified 44 // entries. 45 void NormalizeEntries(); 46 47 // Manipulate preference nodes so that they'll be overwritten by local 48 // preference values during model association, i.e. local wins instead of 49 // server wins. This is for preventing backup from changing preferences in 50 // case backup DB has hijacked preferences. 51 void HideSyncPreference(ModelType pref_type); 52 53 // Handles of unsynced entries caused by local model changes. 54 std::set<int64> unsynced_; 55 56 // True if NormalizeEntries() is being called. 57 bool in_normalization_; 58 59 SyncStatus status_; 60 61 DISALLOW_COPY_AND_ASSIGN(SyncBackupManager); 62 }; 63 64 } // namespace syncer 65 66 #endif // SYNC_INTERNAL_API_SYNC_BACKUP_MANAGER_H_ 67