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      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_BROWSER_APPCACHE_APPCACHE_DISPATCHER_HOST_H_
      6 #define CONTENT_BROWSER_APPCACHE_APPCACHE_DISPATCHER_HOST_H_
      7 
      8 #include <vector>
      9 
     10 #include "base/memory/ref_counted.h"
     11 #include "base/memory/scoped_ptr.h"
     12 #include "base/process/process.h"
     13 #include "content/browser/appcache/appcache_backend_impl.h"
     14 #include "content/browser/appcache/appcache_frontend_proxy.h"
     15 #include "content/public/browser/browser_message_filter.h"
     16 
     17 namespace content {
     18 class ChromeAppCacheService;
     19 
     20 // Handles appcache related messages sent to the main browser process from
     21 // its child processes. There is a distinct host for each child process.
     22 // Messages are handled on the IO thread. The BrowserRenderProcessHost and
     23 // WorkerProcessHost create an instance and delegates calls to it.
     24 class AppCacheDispatcherHost : public BrowserMessageFilter {
     25  public:
     26   AppCacheDispatcherHost(ChromeAppCacheService* appcache_service,
     27                          int process_id);
     28 
     29   // BrowserIOMessageFilter implementation
     30   virtual void OnChannelConnected(int32 peer_pid) OVERRIDE;
     31   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
     32 
     33  protected:
     34   virtual ~AppCacheDispatcherHost();
     35 
     36   // BrowserMessageFilter override.
     37   virtual void BadMessageReceived() OVERRIDE;
     38 
     39  private:
     40   // IPC message handlers
     41   void OnRegisterHost(int host_id);
     42   void OnUnregisterHost(int host_id);
     43   void OnSetSpawningHostId(int host_id, int spawning_host_id);
     44   void OnSelectCache(int host_id, const GURL& document_url,
     45                      int64 cache_document_was_loaded_from,
     46                      const GURL& opt_manifest_url);
     47   void OnSelectCacheForWorker(int host_id, int parent_process_id,
     48                               int parent_host_id);
     49   void OnSelectCacheForSharedWorker(int host_id, int64 appcache_id);
     50   void OnMarkAsForeignEntry(int host_id, const GURL& document_url,
     51                             int64 cache_document_was_loaded_from);
     52   void OnGetStatus(int host_id, IPC::Message* reply_msg);
     53   void OnStartUpdate(int host_id, IPC::Message* reply_msg);
     54   void OnSwapCache(int host_id, IPC::Message* reply_msg);
     55   void OnGetResourceList(
     56       int host_id,
     57       std::vector<AppCacheResourceInfo>* resource_infos);
     58   void GetStatusCallback(AppCacheStatus status, void* param);
     59   void StartUpdateCallback(bool result, void* param);
     60   void SwapCacheCallback(bool result, void* param);
     61 
     62 
     63   scoped_refptr<ChromeAppCacheService> appcache_service_;
     64   AppCacheFrontendProxy frontend_proxy_;
     65   AppCacheBackendImpl backend_impl_;
     66 
     67   content::GetStatusCallback get_status_callback_;
     68   content::StartUpdateCallback start_update_callback_;
     69   content::SwapCacheCallback swap_cache_callback_;
     70   scoped_ptr<IPC::Message> pending_reply_msg_;
     71 
     72   // The corresponding ChildProcessHost object's id().
     73   int process_id_;
     74 
     75   DISALLOW_COPY_AND_ASSIGN(AppCacheDispatcherHost);
     76 };
     77 
     78 }  // namespace content
     79 
     80 #endif  // CONTENT_BROWSER_APPCACHE_APPCACHE_DISPATCHER_HOST_H_
     81