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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 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 
     12 namespace leveldb {
     13 class Iterator;
     14 }  // namespace leveldb
     15 
     16 namespace content {
     17 
     18 class LevelDBIteratorImpl;
     19 class LevelDBDatabase;
     20 class 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.
     24 class 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