src/chrome/browser/extensions/api/system_info/system_info_api.h

   1 // Copyright 2013 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_API_SYSTEM_INFO_SYSTEM_INFO_API_H_
   6 #define CHROME_BROWSER_EXTENSIONS_API_SYSTEM_INFO_SYSTEM_INFO_API_H_
   7
   8 #include "extensions/browser/browser_context_keyed_api_factory.h"
   9 #include "extensions/browser/event_router.h"
  10
  11 namespace extensions {
  12
  13 // A Profile-scoped object which is registered as an observer of EventRouter
  14 // to observe the systemInfo event listener arrival/removal.
  15 class SystemInfoAPI : public BrowserContextKeyedAPI,
  16                       public EventRouter::Observer {
  17  public:
  18   // BrowserContextKeyedAPI implementation.
  19   static BrowserContextKeyedAPIFactory<SystemInfoAPI>* GetFactoryInstance();
  20
  21   explicit SystemInfoAPI(content::BrowserContext* context);
  22   virtual ~SystemInfoAPI();
  23
  24   // KeyedService implementation.
  25   virtual void Shutdown() OVERRIDE;
  26
  27   // EventRouter::Observer implementation.
  28   virtual void OnListenerAdded(const EventListenerInfo& details) OVERRIDE;
  29   virtual void OnListenerRemoved(const EventListenerInfo& details) OVERRIDE;
  30
  31  private:
  32   friend class BrowserContextKeyedAPIFactory<SystemInfoAPI>;
  33
  34   // BrowserContextKeyedAPI implementation.
  35   static const char* service_name() {
  36     return "SystemInfoAPI";
  37   }
  38   static const bool kServiceIsNULLWhileTesting = true;
  39
  40   content::BrowserContext* browser_context_;
  41
  42   DISALLOW_COPY_AND_ASSIGN(SystemInfoAPI);
  43 };
  44
  45 }  // namespace extensions
  46
  47 #endif  // CHROME_BROWSER_EXTENSIONS_API_SYSTEM_INFO_SYSTEM_INFO_API_H_