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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 #include <memory> | |
10 | |
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 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 std::unique_ptr<CommitContribution> GetContribution( | |
34 size_t max_entries) = 0; | |
35 }; | |
36 | |
37 } // namespace syncer | |
38 | |
39 #endif // SYNC_ENGINE_COMMIT_CONTRIBUTOR_H_ | |
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