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 CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CLASS_FACTORY_H_
6#define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CLASS_FACTORY_H_
7
8#include "base/lazy_instance.h"
9#include "base/memory/scoped_ptr.h"
10#include "content/common/content_export.h"
11
12namespace leveldb {
13class Iterator;
14}  // namespace leveldb
15
16namespace content {
17
18class LevelDBIteratorImpl;
19class LevelDBDatabase;
20class LevelDBTransaction;
21
22// Use this factory to create some IndexedDB objects. Exists solely to
23// facilitate tests which sometimes need to inject mock objects into the system.
24class CONTENT_EXPORT IndexedDBClassFactory {
25 public:
26  typedef IndexedDBClassFactory* GetterCallback();
27
28  static IndexedDBClassFactory* Get();
29
30  static void SetIndexedDBClassFactoryGetter(GetterCallback* cb);
31
32  virtual LevelDBIteratorImpl* CreateIteratorImpl(
33      scoped_ptr<leveldb::Iterator> iterator);
34  virtual LevelDBTransaction* CreateLevelDBTransaction(LevelDBDatabase* db);
35
36 protected:
37  IndexedDBClassFactory() {}
38  virtual ~IndexedDBClassFactory() {}
39  friend struct base::DefaultLazyInstanceTraits<IndexedDBClassFactory>;
40};
41
42}  // namespace content
43
44#endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CLASS_FACTORY_H_
45