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_ENGINE_COMMIT_CONTRIBUTOR_H_ 6 #define SYNC_ENGINE_COMMIT_CONTRIBUTOR_H_ 7 8 #include <cstddef> 9 10 #include "base/memory/scoped_ptr.h" 11 #include "sync/base/sync_export.h" 12 13 namespace syncer { 14 15 class CommitContribution; 16 17 namespace syncable { 18 class Directory; 19 } 20 21 // This class represents a source of items to commit to the sync server. 22 // 23 // When asked, it can return CommitContribution objects that contain a set of 24 // items to be committed from this source. 25 class SYNC_EXPORT_PRIVATE CommitContributor { 26 public: 27 CommitContributor(); 28 virtual ~CommitContributor() = 0; 29 30 // Gathers up to |max_entries| unsynced items from this contributor into a 31 // CommitContribution. Returns NULL when the contributor has nothing to 32 // contribute. 33 virtual scoped_ptr<CommitContribution> GetContribution( 34 size_t max_entries) = 0; 35 }; 36 37 } // namespace 38 39 #endif // SYNC_ENGINE_COMMIT_CONTRIBUTOR_H_ 40