1 // Copyright 2015 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 COMPONENTS_SYNC_MODEL_ENTITY_CHANGE_H_
6 #define COMPONENTS_SYNC_MODEL_ENTITY_CHANGE_H_
7 
8 #include <memory>
9 #include <string>
10 #include <vector>
11 
12 #include "base/macros.h"
13 #include "components/sync/model/entity_data.h"
14 
15 namespace syncer {
16 
17 class EntityChange {
18  public:
19   enum ChangeType { ACTION_ADD, ACTION_UPDATE, ACTION_DELETE };
20 
21   static std::unique_ptr<EntityChange> CreateAdd(const std::string& storage_key,
22                                                  EntityData data);
23   static std::unique_ptr<EntityChange> CreateUpdate(
24       const std::string& storage_key,
25       EntityData data);
26   static std::unique_ptr<EntityChange> CreateDelete(
27       const std::string& storage_key);
28 
29   virtual ~EntityChange();
30 
storage_key()31   std::string storage_key() const { return storage_key_; }
type()32   ChangeType type() const { return type_; }
data()33   const EntityData& data() const { return data_; }
34 
35  private:
36   EntityChange(const std::string& storage_key,
37                ChangeType type,
38                EntityData data);
39 
40   std::string storage_key_;
41   ChangeType type_;
42   EntityData data_;
43 
44   DISALLOW_COPY_AND_ASSIGN(EntityChange);
45 };
46 
47 using EntityChangeList = std::vector<std::unique_ptr<EntityChange>>;
48 
49 }  // namespace syncer
50 
51 #endif  // COMPONENTS_SYNC_MODEL_ENTITY_CHANGE_H_
52