chrome/browser/extensions/api/signed_in_devices/signed_in_devices_manager.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_SIGNED_IN_DEVICES_SIGNED_IN_DEVICES_MANAGER_H__
   6 #define CHROME_BROWSER_EXTENSIONS_API_SIGNED_IN_DEVICES_SIGNED_IN_DEVICES_MANAGER_H__
   7
   8 #include <string>
   9
  10 #include "base/gtest_prod_util.h"
  11 #include "base/memory/scoped_vector.h"
  12 #include "base/scoped_observer.h"
  13 #include "components/sync_driver/device_info_tracker.h"
  14 #include "extensions/browser/browser_context_keyed_api_factory.h"
  15 #include "extensions/browser/event_router.h"
  16 #include "extensions/browser/extension_registry_observer.h"
  17
  18 class Profile;
  19
  20 namespace content {
  21 class BrowserContext;
  22 class NotificationDetails;
  23 class NotificationObserver;
  24 class NotificationRegistrar;
  25 }  // namespace content
  26
  27 namespace extensions {
  28 class BrowserContextKeyedAPI;
  29 class ExtensionRegistry;
  30
  31 struct EventListenerInfo;
  32
  33 // An object of this class is created for each extension that has registered
  34 // to be notified for device info change. The objects listen for notification
  35 // from sync on device info change. On receiving the notification the
  36 // new list of devices is constructed and passed back to the extension.
  37 // The extension id is part of this object as it is needed to fill in the
  38 // public ids for devices(public ids for a device, is not the same for
  39 // all extensions).
  40 class SignedInDevicesChangeObserver
  41     : public sync_driver::DeviceInfoTracker::Observer {
  42  public:
  43   SignedInDevicesChangeObserver(const std::string& extension_id,
  44                                 Profile* profile);
  45   virtual ~SignedInDevicesChangeObserver();
  46
  47   void OnDeviceInfoChange() override;
  48
  49   const std::string& extension_id() {
  50     return extension_id_;
  51   }
  52
  53  private:
  54   std::string extension_id_;
  55   Profile* const profile_;
  56   content::NotificationRegistrar registrar_;
  57 };
  58
  59 class SignedInDevicesManager : public BrowserContextKeyedAPI,
  60                                public ExtensionRegistryObserver,
  61                                public EventRouter::Observer {
  62  public:
  63   // Default constructor used for testing.
  64   SignedInDevicesManager();
  65   explicit SignedInDevicesManager(content::BrowserContext* context);
  66   ~SignedInDevicesManager() override;
  67
  68   // BrowserContextKeyedAPI implementation.
  69   static BrowserContextKeyedAPIFactory<SignedInDevicesManager>*
  70       GetFactoryInstance();
  71
  72   // ExtensionRegistryObserver implementation.
  73   void OnExtensionUnloaded(content::BrowserContext* browser_context,
  74                            const Extension* extension,
  75                            UnloadedExtensionInfo::Reason reason) override;
  76
  77   // EventRouter::Observer:
  78   void OnListenerAdded(const EventListenerInfo& details) override;
  79   void OnListenerRemoved(const EventListenerInfo& details) override;
  80
  81  private:
  82   friend class BrowserContextKeyedAPIFactory<SignedInDevicesManager>;
  83
  84   // BrowserContextKeyedAPI implementation.
  85   static const char* service_name() {
  86     return "SignedInDevicesManager";
  87   }
  88   static const bool kServiceHasOwnInstanceInIncognito = true;
  89
  90   void RemoveChangeObserverForExtension(const std::string& extension_id);
  91
  92   Profile* const profile_;
  93   ScopedVector<SignedInDevicesChangeObserver> change_observers_;
  94
  95   // Listen to extension unloaded notification.
  96   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
  97       extension_registry_observer_;
  98
  99   FRIEND_TEST_ALL_PREFIXES(SignedInDevicesManager, UpdateListener);
 100
 101   DISALLOW_COPY_AND_ASSIGN(SignedInDevicesManager);
 102 };
 103
 104 }  // namespace extensions
 105
 106 #endif  // CHROME_BROWSER_EXTENSIONS_API_SIGNED_IN_DEVICES_SIGNED_IN_DEVICES_MANAGER_H__