src/chrome/browser/extensions/api/signed_in_devices/signed_in_devices_manager.cc

   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 #include "chrome/browser/extensions/api/signed_in_devices/signed_in_devices_manager.h"
   6
   7 #include <string>
   8 #include <vector>
   9
  10 #include "base/lazy_instance.h"
  11 #include "base/memory/linked_ptr.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/memory/scoped_vector.h"
  14 #include "base/values.h"
  15 #include "chrome/browser/chrome_notification_types.h"
  16 #include "chrome/browser/extensions/api/signed_in_devices/signed_in_devices_api.h"
  17 #include "chrome/browser/extensions/extension_service.h"
  18 #include "chrome/browser/profiles/profile.h"
  19 #include "chrome/browser/sync/glue/device_info.h"
  20 #include "chrome/browser/sync/profile_sync_service.h"
  21 #include "chrome/browser/sync/profile_sync_service_factory.h"
  22 #include "chrome/common/extensions/api/signed_in_devices.h"
  23 #include "content/public/browser/notification_details.h"
  24 #include "content/public/browser/notification_observer.h"
  25 #include "content/public/browser/notification_registrar.h"
  26 #include "content/public/browser/notification_service.h"
  27 #include "content/public/browser/notification_source.h"
  28 #include "extensions/browser/event_router.h"
  29 #include "extensions/common/extension.h"
  30
  31 using browser_sync::DeviceInfo;
  32 namespace extensions {
  33
  34 namespace {
  35 void FillDeviceInfo(const DeviceInfo& device_info,
  36                     api::signed_in_devices::DeviceInfo* api_device_info) {
  37   api_device_info->id = device_info.public_id();
  38   api_device_info->name = device_info.client_name();
  39   api_device_info->os = api::signed_in_devices::ParseOS(
  40       device_info.GetOSString());
  41   api_device_info->type = api::signed_in_devices::ParseDeviceType(
  42       device_info.GetDeviceTypeString());
  43   api_device_info->chrome_version = device_info.chrome_version();
  44 }
  45 }  // namespace
  46
  47 SignedInDevicesChangeObserver::SignedInDevicesChangeObserver(
  48     const std::string& extension_id,
  49     Profile* profile) : extension_id_(extension_id),
  50                         profile_(profile) {
  51   ProfileSyncService* pss = ProfileSyncServiceFactory::GetForProfile(profile_);
  52   if (pss) {
  53     pss->AddObserverForDeviceInfoChange(this);
  54   }
  55 }
  56
  57 SignedInDevicesChangeObserver::~SignedInDevicesChangeObserver() {
  58   ProfileSyncService* pss = ProfileSyncServiceFactory::GetForProfile(profile_);
  59   if (pss) {
  60     pss->RemoveObserverForDeviceInfoChange(this);
  61   }
  62
  63 }
  64
  65 void SignedInDevicesChangeObserver::OnDeviceInfoChange() {
  66   // There is a change in the list of devices. Get all devices and send them to
  67   // the listener.
  68   ScopedVector<DeviceInfo> devices = GetAllSignedInDevices(extension_id_,
  69                                                            profile_);
  70
  71   std::vector<linked_ptr<api::signed_in_devices::DeviceInfo> > args;
  72
  73   for (ScopedVector<DeviceInfo>::const_iterator it = devices.begin();
  74        it != devices.end();
  75        ++it) {
  76     linked_ptr<api::signed_in_devices::DeviceInfo> api_device =
  77         make_linked_ptr(new api::signed_in_devices::DeviceInfo);
  78     FillDeviceInfo(*(*it), api_device.get());
  79     args.push_back(api_device);
  80   }
  81
  82   scoped_ptr<base::ListValue> result =
  83       api::signed_in_devices::OnDeviceInfoChange::Create(args);
  84   scoped_ptr<Event> event(new Event(
  85       api::signed_in_devices::OnDeviceInfoChange::kEventName,
  86       result.Pass()));
  87
  88   event->restrict_to_browser_context = profile_;
  89
  90   EventRouter::Get(profile_)->DispatchEventToExtension(
  91       extension_id_, event.Pass());
  92 }
  93
  94 static base::LazyInstance<
  95     BrowserContextKeyedAPIFactory<SignedInDevicesManager> > g_factory =
  96     LAZY_INSTANCE_INITIALIZER;
  97
  98 // static
  99 BrowserContextKeyedAPIFactory<SignedInDevicesManager>*
 100 SignedInDevicesManager::GetFactoryInstance() {
 101   return g_factory.Pointer();
 102 }
 103
 104 SignedInDevicesManager::SignedInDevicesManager()
 105     : profile_(NULL) {}
 106
 107 SignedInDevicesManager::SignedInDevicesManager(content::BrowserContext* context)
 108     : profile_(Profile::FromBrowserContext(context)) {
 109   extensions::EventRouter* router = extensions::EventRouter::Get(profile_);
 110   if (router) {
 111     router->RegisterObserver(
 112         this, api::signed_in_devices::OnDeviceInfoChange::kEventName);
 113   }
 114
 115   // Register for unload event so we could clear all our listeners when
 116   // extensions have unloaded.
 117   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
 118                  content::Source<Profile>(profile_->GetOriginalProfile()));
 119 }
 120
 121 SignedInDevicesManager::~SignedInDevicesManager() {}
 122
 123 void SignedInDevicesManager::OnListenerAdded(
 124     const EventListenerInfo& details) {
 125   for (ScopedVector<SignedInDevicesChangeObserver>::const_iterator it =
 126            change_observers_.begin();
 127            it != change_observers_.end();
 128            ++it) {
 129     if ((*it)->extension_id() == details.extension_id) {
 130       DCHECK(false) <<"OnListenerAded fired twice for same extension";
 131       return;
 132     }
 133   }
 134
 135   change_observers_.push_back(new SignedInDevicesChangeObserver(
 136       details.extension_id,
 137       profile_));
 138 }
 139
 140 void SignedInDevicesManager::OnListenerRemoved(
 141     const EventListenerInfo& details) {
 142   RemoveChangeObserverForExtension(details.extension_id);
 143 }
 144
 145
 146 void SignedInDevicesManager::RemoveChangeObserverForExtension(
 147     const std::string& extension_id) {
 148   for (ScopedVector<SignedInDevicesChangeObserver>::iterator it =
 149            change_observers_.begin();
 150            it != change_observers_.end();
 151            ++it) {
 152     if ((*it)->extension_id() == extension_id) {
 153       change_observers_.erase(it);
 154       return;
 155     }
 156   }
 157 }
 158
 159 void SignedInDevicesManager::Observe(
 160     int type,
 161     const content::NotificationSource& source,
 162     const content::NotificationDetails& details) {
 163   DCHECK_EQ(type, chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED);
 164   UnloadedExtensionInfo* reason =
 165       content::Details<UnloadedExtensionInfo>(details).ptr();
 166   RemoveChangeObserverForExtension(reason->extension->id());
 167 }
 168
 169 }  // namespace extensions