Upstream version 9.38.198.0
[platform/framework/web/crosswalk.git] / src / content / browser / loader / resource_message_filter.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_BROWSER_LOADER_RESOURCE_MESSAGE_FILTER_H_
6 #define CONTENT_BROWSER_LOADER_RESOURCE_MESSAGE_FILTER_H_
7
8 #include "base/callback_forward.h"
9 #include "base/memory/scoped_ptr.h"
10 #include "base/memory/weak_ptr.h"
11 #include "content/common/content_export.h"
12 #include "content/public/browser/browser_message_filter.h"
13 #include "content/public/common/resource_type.h"
14
15 struct ResourceHostMsg_Request;
16
17 namespace fileapi {
18 class FileSystemContext;
19 }  // namespace fileapi
20
21 namespace net {
22 class URLRequestContext;
23 }  // namespace net
24
25
26 namespace content {
27 class ChromeAppCacheService;
28 class ChromeBlobStorageContext;
29 class ResourceContext;
30 class ServiceWorkerContextWrapper;
31
32 // This class filters out incoming IPC messages for network requests and
33 // processes them on the IPC thread.  As a result, network requests are not
34 // delayed by costly UI processing that may be occuring on the main thread of
35 // the browser.  It also means that any hangs in starting a network request
36 // will not interfere with browser UI.
37 class CONTENT_EXPORT ResourceMessageFilter : public BrowserMessageFilter {
38  public:
39   typedef base::Callback<void(const ResourceHostMsg_Request&,
40                               ResourceContext**,
41                               net::URLRequestContext**)> GetContextsCallback;
42
43   // |appcache_service|, |blob_storage_context|, |file_system_context| may be
44   // NULL in unittests or for requests from the (NPAPI) plugin process.
45   ResourceMessageFilter(
46       int child_id,
47       int process_type,
48       ChromeAppCacheService* appcache_service,
49       ChromeBlobStorageContext* blob_storage_context,
50       fileapi::FileSystemContext* file_system_context,
51       ServiceWorkerContextWrapper* service_worker_context,
52       const GetContextsCallback& get_contexts_callback);
53
54   // BrowserMessageFilter implementation.
55   virtual void OnChannelClosing() OVERRIDE;
56   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
57
58   void GetContexts(const ResourceHostMsg_Request& request,
59                    ResourceContext** resource_context,
60                    net::URLRequestContext** request_context);
61
62   // Returns the net::URLRequestContext for the given request.
63   net::URLRequestContext* GetURLRequestContext(ResourceType request_type);
64
65   ChromeAppCacheService* appcache_service() const {
66     return appcache_service_.get();
67   }
68
69   ChromeBlobStorageContext* blob_storage_context() const {
70     return blob_storage_context_.get();
71   }
72
73   fileapi::FileSystemContext* file_system_context() const {
74     return file_system_context_.get();
75   }
76
77   ServiceWorkerContextWrapper* service_worker_context() const {
78     return service_worker_context_.get();
79   }
80
81   int child_id() const { return child_id_; }
82   int process_type() const { return process_type_; }
83
84   base::WeakPtr<ResourceMessageFilter> GetWeakPtr();
85
86  protected:
87   // Protected destructor so that we can be overriden in tests.
88   virtual ~ResourceMessageFilter();
89
90  private:
91   // The ID of the child process.
92   int child_id_;
93
94   int process_type_;
95
96   scoped_refptr<ChromeAppCacheService> appcache_service_;
97   scoped_refptr<ChromeBlobStorageContext> blob_storage_context_;
98   scoped_refptr<fileapi::FileSystemContext> file_system_context_;
99   scoped_refptr<ServiceWorkerContextWrapper> service_worker_context_;
100
101   GetContextsCallback get_contexts_callback_;
102
103   // This must come last to make sure weak pointers are invalidated first.
104   base::WeakPtrFactory<ResourceMessageFilter> weak_ptr_factory_;
105
106   DISALLOW_IMPLICIT_CONSTRUCTORS(ResourceMessageFilter);
107 };
108
109 }  // namespace content
110
111 #endif  // CONTENT_BROWSER_LOADER_RESOURCE_MESSAGE_FILTER_H_