content/renderer/dom_storage/dom_storage_dispatcher.h

   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
  10 class GURL;
  11 struct DOMStorageMsg_Event_Params;
  12
  13 namespace IPC {
  14 class Message;
  15 }
  16
  17 namespace content {
  18
  19 class 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.
  26 class 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   void OnResetCachedValues(int64 namespace_id);
  46
  47   scoped_refptr<ProxyImpl> proxy_;
  48 };
  49
  50 }  // namespace content
  51
  52 #endif  // CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_DISPATCHER_H_