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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_frontend_proxy.h"
     14 #include "content/public/browser/browser_message_filter.h"
     15 #include "webkit/browser/appcache/appcache_backend_impl.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,
     32                                  bool* message_was_ok) OVERRIDE;
     33 
     34  protected:
     35   virtual ~AppCacheDispatcherHost();
     36 
     37   // BrowserMessageFilter override.
     38   virtual void BadMessageReceived() OVERRIDE;
     39 
     40  private:
     41   // IPC message handlers
     42   void OnRegisterHost(int host_id);
     43   void OnUnregisterHost(int host_id);
     44   void OnSetSpawningHostId(int host_id, int spawning_host_id);
     45   void OnSelectCache(int host_id, const GURL& document_url,
     46                      int64 cache_document_was_loaded_from,
     47                      const GURL& opt_manifest_url);
     48   void OnSelectCacheForWorker(int host_id, int parent_process_id,
     49                               int parent_host_id);
     50   void OnSelectCacheForSharedWorker(int host_id, int64 appcache_id);
     51   void OnMarkAsForeignEntry(int host_id, const GURL& document_url,
     52                             int64 cache_document_was_loaded_from);
     53   void OnGetStatus(int host_id, IPC::Message* reply_msg);
     54   void OnStartUpdate(int host_id, IPC::Message* reply_msg);
     55   void OnSwapCache(int host_id, IPC::Message* reply_msg);
     56   void OnGetResourceList(
     57       int host_id,
     58       std::vector<appcache::AppCacheResourceInfo>* resource_infos);
     59   void GetStatusCallback(appcache::Status status, void* param);
     60   void StartUpdateCallback(bool result, void* param);
     61   void SwapCacheCallback(bool result, void* param);
     62 
     63 
     64   scoped_refptr<ChromeAppCacheService> appcache_service_;
     65   AppCacheFrontendProxy frontend_proxy_;
     66   appcache::AppCacheBackendImpl backend_impl_;
     67 
     68   appcache::GetStatusCallback get_status_callback_;
     69   appcache::StartUpdateCallback start_update_callback_;
     70   appcache::SwapCacheCallback swap_cache_callback_;
     71   scoped_ptr<IPC::Message> pending_reply_msg_;
     72 
     73   // The corresponding ChildProcessHost object's id().
     74   int process_id_;
     75 
     76   DISALLOW_COPY_AND_ASSIGN(AppCacheDispatcherHost);
     77 };
     78 
     79 }  // namespace content
     80 
     81 #endif  // CONTENT_BROWSER_APPCACHE_APPCACHE_DISPATCHER_HOST_H_
     82