IndexedDB: Eliminate interfaces for IndexedDB{Factory,Database,Cursor}

content/browser/indexed_db/indexed_db_factory.h

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FACTORY_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FACTORY_H_
 
+#include <map>
+#include <set>
+
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
 #include "base/string16.h"
+#include "content/browser/indexed_db/indexed_db_callbacks_wrapper.h"
+#include "content/browser/indexed_db/indexed_db_database_callbacks_wrapper.h"
+#include "content/browser/indexed_db/indexed_db_factory.h"
+#include "content/common/content_export.h"
 
 namespace content {
 
-class IndexedDBCallbacksWrapper;
+class IndexedDBBackingStore;
 class IndexedDBDatabase;
-class IndexedDBDatabaseCallbacksWrapper;
 
-class IndexedDBFactory : public base::RefCounted<IndexedDBFactory> {
+class CONTENT_EXPORT IndexedDBFactory
+    : NON_EXPORTED_BASE(public base::RefCounted<IndexedDBFactory>) {
  public:
-  static scoped_refptr<IndexedDBFactory> Create();
+  static scoped_refptr<IndexedDBFactory> Create() {
+    return make_scoped_refptr(new IndexedDBFactory());
+  }
 
-  virtual void GetDatabaseNames(
-      scoped_refptr<IndexedDBCallbacksWrapper> callbacks,
-      const string16& database_identifier,
-      const base::FilePath& data_directory) = 0;
-  virtual void Open(
-      const string16& name,
-      int64 version,
-      int64 transaction_id,
-      scoped_refptr<IndexedDBCallbacksWrapper> callbacks,
-      scoped_refptr<IndexedDBDatabaseCallbacksWrapper> database_callbacks,
-      const string16& database_identifier,
-      const base::FilePath& data_directory) = 0;
-  virtual void DeleteDatabase(
-      const string16& name,
-      scoped_refptr<IndexedDBCallbacksWrapper> callbacks,
-      const string16& database_identifier,
-      const base::FilePath& data_directory) = 0;
+  // Notifications from weak pointers.
+  void RemoveIDBDatabaseBackend(const string16& unique_identifier);
+
+  void GetDatabaseNames(scoped_refptr<IndexedDBCallbacksWrapper> callbacks,
+                        const string16& database_identifier,
+                        const base::FilePath& data_directory);
+  void Open(const string16& name,
+            int64 version,
+            int64 transaction_id,
+            scoped_refptr<IndexedDBCallbacksWrapper> callbacks,
+            scoped_refptr<IndexedDBDatabaseCallbacksWrapper> database_callbacks,
+            const string16& database_identifier,
+            const base::FilePath& data_directory);
+
+  void DeleteDatabase(const string16& name,
+                      scoped_refptr<IndexedDBCallbacksWrapper> callbacks,
+                      const string16& database_identifier,
+                      const base::FilePath& data_directory);
 
  protected:
-  virtual ~IndexedDBFactory() {}
   friend class base::RefCounted<IndexedDBFactory>;
+
+  IndexedDBFactory();
+  virtual ~IndexedDBFactory();
+
+  scoped_refptr<IndexedDBBackingStore> OpenBackingStore(
+      const string16& database_identifier,
+      const base::FilePath& data_directory);
+
+ private:
+  typedef std::map<string16, scoped_refptr<IndexedDBDatabase> >
+      IndexedDBDatabaseMap;
+  IndexedDBDatabaseMap database_backend_map_;
+
+  typedef std::map<string16, base::WeakPtr<IndexedDBBackingStore> >
+      IndexedDBBackingStoreMap;
+  IndexedDBBackingStoreMap backing_store_map_;
+
+  std::set<scoped_refptr<IndexedDBBackingStore> > session_only_backing_stores_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FACTORY_H_