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
18class Profile;
19
20namespace content {
21class BrowserContext;
22class NotificationDetails;
23class NotificationObserver;
24class NotificationRegistrar;
25}  // namespace content
26
27namespace extensions {
28class BrowserContextKeyedAPI;
29class ExtensionRegistry;
30
31struct 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).
40class SignedInDevicesChangeObserver
41    : public sync_driver::DeviceInfoTracker::Observer {
42 public:
43  SignedInDevicesChangeObserver(const std::string& extension_id,
44                                Profile* profile);
45  virtual ~SignedInDevicesChangeObserver();
46
47  virtual 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
59class 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  virtual ~SignedInDevicesManager();
67
68  // BrowserContextKeyedAPI implementation.
69  static BrowserContextKeyedAPIFactory<SignedInDevicesManager>*
70      GetFactoryInstance();
71
72  // ExtensionRegistryObserver implementation.
73  virtual void OnExtensionUnloaded(
74      content::BrowserContext* browser_context,
75      const Extension* extension,
76      UnloadedExtensionInfo::Reason reason) OVERRIDE;
77
78  // EventRouter::Observer:
79  virtual void OnListenerAdded(const EventListenerInfo& details) OVERRIDE;
80  virtual void OnListenerRemoved(const EventListenerInfo& details) OVERRIDE;
81
82 private:
83  friend class BrowserContextKeyedAPIFactory<SignedInDevicesManager>;
84
85  // BrowserContextKeyedAPI implementation.
86  static const char* service_name() {
87    return "SignedInDevicesManager";
88  }
89  static const bool kServiceHasOwnInstanceInIncognito = true;
90
91  void RemoveChangeObserverForExtension(const std::string& extension_id);
92
93  Profile* const profile_;
94  ScopedVector<SignedInDevicesChangeObserver> change_observers_;
95
96  // Listen to extension unloaded notification.
97  ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
98      extension_registry_observer_;
99
100  FRIEND_TEST_ALL_PREFIXES(SignedInDevicesManager, UpdateListener);
101
102  DISALLOW_COPY_AND_ASSIGN(SignedInDevicesManager);
103};
104
105}  // namespace extensions
106
107#endif  // CHROME_BROWSER_EXTENSIONS_API_SIGNED_IN_DEVICES_SIGNED_IN_DEVICES_MANAGER_H__
108