1// Copyright (c) 2012 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_RENDERER_DOM_STORAGE_DOM_STORAGE_DISPATCHER_H_
6#define CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_DISPATCHER_H_
7
8#include "base/memory/ref_counted.h"
9
10class GURL;
11struct DOMStorageMsg_Event_Params;
12
13namespace IPC {
14class Message;
15}
16
17namespace content {
18
19class DOMStorageCachedArea;
20
21// Dispatches DomStorage related messages sent to a renderer process from the
22// main browser process. There is one instance per child process. Messages
23// are dispatched on the main renderer thread. The RenderThreadImpl
24// creates an instance and delegates calls to it. This classes also manages
25// the collection of DOMStorageCachedAreas that are active in the process.
26class DomStorageDispatcher {
27 public:
28  DomStorageDispatcher();
29  ~DomStorageDispatcher();
30
31  // Each call to open should be balanced with a call to close.
32  scoped_refptr<DOMStorageCachedArea> OpenCachedArea(int connection_id,
33                                                     int64 namespace_id,
34                                                     const GURL& origin);
35  void CloseCachedArea(int connection_id, DOMStorageCachedArea* area);
36
37  bool OnMessageReceived(const IPC::Message& msg);
38
39 private:
40  class ProxyImpl;
41
42  // IPC message handlers
43  void OnStorageEvent(const DOMStorageMsg_Event_Params& params);
44  void OnAsyncOperationComplete(bool success);
45
46  scoped_refptr<ProxyImpl> proxy_;
47};
48
49}  // namespace content
50
51#endif  // CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_DISPATCHER_H_
52