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// Copyright 2014 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 SYNC_INTERNAL_API_SYNC_BACKUP_MANAGER_H_
#define SYNC_INTERNAL_API_SYNC_BACKUP_MANAGER_H_
#include <set>
#include "sync/internal_api/sync_rollback_manager_base.h"
#include "url/gurl.h"
namespace syncer {
// SyncBackupManager runs before user signs in to sync to back up user's data
// before sync starts. The data that's backed up can be used to restore user's
// settings to pre-sync state.
class SYNC_EXPORT_PRIVATE SyncBackupManager : public SyncRollbackManagerBase {
public:
SyncBackupManager();
virtual ~SyncBackupManager();
// SyncManager implementation.
virtual void Init(InitArgs* args) override;
virtual void SaveChanges() override;
virtual SyncStatus GetDetailedStatus() const override;
virtual void ShutdownOnSyncThread(ShutdownReason reason) override;
// DirectoryChangeDelegate implementation.
virtual ModelTypeSet HandleTransactionEndingChangeEvent(
const syncable::ImmutableWriteTransactionInfo& write_transaction_info,
syncable::BaseTransaction* trans) override;
virtual void RegisterDirectoryTypeDebugInfoObserver(
syncer::TypeDebugInfoObserver* observer) override;
virtual void UnregisterDirectoryTypeDebugInfoObserver(
syncer::TypeDebugInfoObserver* observer) override;
virtual bool HasDirectoryTypeDebugInfoObserver(
syncer::TypeDebugInfoObserver* observer) override;
virtual void RequestEmitDebugInfo() override;
private:
// Replaces local IDs with server IDs and clear unsynced bit of modified
// entries.
void NormalizeEntries();
// Manipulate preference nodes so that they'll be overwritten by local
// preference values during model association, i.e. local wins instead of
// server wins. This is for preventing backup from changing preferences in
// case backup DB has hijacked preferences.
void HideSyncPreference(ModelType pref_type);
// Handles of unsynced entries caused by local model changes.
std::set<int64> unsynced_;
// True if NormalizeEntries() is being called.
bool in_normalization_;
SyncStatus status_;
DISALLOW_COPY_AND_ASSIGN(SyncBackupManager);
};
} // namespace syncer
#endif // SYNC_INTERNAL_API_SYNC_BACKUP_MANAGER_H_