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1 // Copyright 2014 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 CHROME_BROWSER_EXTENSIONS_EXTENSION_GCM_APP_HANDLER_H_
6 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_GCM_APP_HANDLER_H_
7 
8 #include <string>
9 
10 #include "base/compiler_specific.h"
11 #include "base/macros.h"
12 #include "base/memory/scoped_ptr.h"
13 #include "base/memory/weak_ptr.h"
14 #include "base/scoped_observer.h"
15 #include "components/gcm_driver/gcm_app_handler.h"
16 #include "components/gcm_driver/gcm_client.h"
17 #include "extensions/browser/browser_context_keyed_api_factory.h"
18 #include "extensions/browser/extension_registry_observer.h"
19 
20 class Profile;
21 
22 namespace content {
23 class BrowserContext;
24 }
25 
26 namespace gcm {
27 class GCMDriver;
28 class GCMProfileService;
29 }
30 
31 namespace extensions {
32 
33 class ExtensionRegistry;
34 class GcmJsEventRouter;
35 
36 // Defines the interface to provide handling logic for a given app.
37 class ExtensionGCMAppHandler : public gcm::GCMAppHandler,
38                                public BrowserContextKeyedAPI,
39                                public ExtensionRegistryObserver {
40  public:
41   explicit ExtensionGCMAppHandler(content::BrowserContext* context);
42   virtual ~ExtensionGCMAppHandler();
43 
44   // BrowserContextKeyedAPI implementation.
45   static BrowserContextKeyedAPIFactory<ExtensionGCMAppHandler>*
46   GetFactoryInstance();
47 
48   // gcm::GCMAppHandler implementation.
49   virtual void ShutdownHandler() OVERRIDE;
50   virtual void OnMessage(
51       const std::string& app_id,
52       const gcm::GCMClient::IncomingMessage& message) OVERRIDE;
53   virtual void OnMessagesDeleted(const std::string& app_id) OVERRIDE;
54   virtual void OnSendError(
55       const std::string& app_id,
56       const gcm::GCMClient::SendErrorDetails& send_error_details) OVERRIDE;
57 
58  protected:
59   // Could be overridden by testing purpose.
60   virtual void OnUnregisterCompleted(const std::string& app_id,
61                                      gcm::GCMClient::Result result);
62   virtual void AddAppHandler(const std::string& app_id);
63   virtual void RemoveAppHandler(const std::string& app_id);
64 
65   gcm::GCMDriver* GetGCMDriver() const;
66 
67 private:
68   friend class BrowserContextKeyedAPIFactory<ExtensionGCMAppHandler>;
69 
70   // ExtensionRegistryObserver implementation.
71   virtual void OnExtensionLoaded(content::BrowserContext* browser_context,
72                                  const Extension* extension) OVERRIDE;
73   virtual void OnExtensionUnloaded(
74       content::BrowserContext* browser_context,
75       const Extension* extension,
76       UnloadedExtensionInfo::Reason reason) OVERRIDE;
77   virtual void OnExtensionUninstalled(content::BrowserContext* browser_context,
78                                       const Extension* extension) OVERRIDE;
79 
80   void AddDummyAppHandler();
81   void RemoveDummyAppHandler();
82 
83   // BrowserContextKeyedAPI implementation.
service_name()84   static const char* service_name() { return "ExtensionGCMAppHandler"; }
85   static const bool kServiceIsNULLWhileTesting = true;
86 
87   Profile* profile_;
88 
89   // Listen to extension load, unloaded notifications.
90   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
91       extension_registry_observer_;
92 
93 #if !defined(OS_ANDROID)
94   scoped_ptr<extensions::GcmJsEventRouter> js_event_router_;
95 #endif
96 
97   base::WeakPtrFactory<ExtensionGCMAppHandler> weak_factory_;
98 
99   DISALLOW_COPY_AND_ASSIGN(ExtensionGCMAppHandler);
100 };
101 
102 }  // namespace extensions
103 
104 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_GCM_APP_HANDLER_H_
105