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      1 // Copyright 2012 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_API_SYNC_CHANGE_PROCESSOR_H_
      6 #define SYNC_API_SYNC_CHANGE_PROCESSOR_H_
      7 
      8 #include <vector>
      9 
     10 #include "sync/api/sync_error.h"
     11 #include "sync/base/sync_export.h"
     12 
     13 namespace tracked_objects {
     14 class Location;
     15 }  // namespace tracked_objects
     16 
     17 namespace syncer {
     18 
     19 class SyncChange;
     20 
     21 typedef std::vector<SyncChange> SyncChangeList;
     22 
     23 // An interface for services that handle receiving SyncChanges.
     24 class SYNC_EXPORT SyncChangeProcessor {
     25  public:
     26   SyncChangeProcessor();
     27   virtual ~SyncChangeProcessor();
     28 
     29   // Process a list of SyncChanges.
     30   // Returns: A default SyncError (IsSet() == false) if no errors were
     31   //          encountered, and a filled SyncError (IsSet() == true)
     32   //          otherwise.
     33   // Inputs:
     34   //   |from_here|: allows tracking of where sync changes originate.
     35   //   |change_list|: is the list of sync changes in need of processing.
     36   virtual SyncError ProcessSyncChanges(
     37       const tracked_objects::Location& from_here,
     38       const SyncChangeList& change_list) = 0;
     39 };
     40 
     41 }  // namespace syncer
     42 
     43 #endif  // SYNC_API_SYNC_CHANGE_PROCESSOR_H_
     44