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/extensions/extension_system.h"
19 #include "chrome/browser/profiles/profile.h"
20 #include "chrome/browser/sync/glue/device_info.h"
21 #include "chrome/browser/sync/profile_sync_service.h"
22 #include "chrome/browser/sync/profile_sync_service_factory.h"
23 #include "chrome/common/extensions/api/signed_in_devices.h"
24 #include "content/public/browser/notification_details.h"
25 #include "content/public/browser/notification_observer.h"
26 #include "content/public/browser/notification_registrar.h"
27 #include "content/public/browser/notification_service.h"
28 #include "content/public/browser/notification_source.h"
29 #include "extensions/browser/event_router.h"
30 #include "extensions/common/extension.h"
31
32 using browser_sync::DeviceInfo;
33 namespace extensions {
34
35 namespace {
FillDeviceInfo(const DeviceInfo & device_info,api::signed_in_devices::DeviceInfo * api_device_info)36 void FillDeviceInfo(const DeviceInfo& device_info,
37 api::signed_in_devices::DeviceInfo* api_device_info) {
38 api_device_info->id = device_info.public_id();
39 api_device_info->name = device_info.client_name();
40 api_device_info->os = api::signed_in_devices::ParseOS(
41 device_info.GetOSString());
42 api_device_info->type = api::signed_in_devices::ParseDeviceType(
43 device_info.GetDeviceTypeString());
44 api_device_info->chrome_version = device_info.chrome_version();
45 }
46 } // namespace
47
SignedInDevicesChangeObserver(const std::string & extension_id,Profile * profile)48 SignedInDevicesChangeObserver::SignedInDevicesChangeObserver(
49 const std::string& extension_id,
50 Profile* profile) : extension_id_(extension_id),
51 profile_(profile) {
52 ProfileSyncService* pss = ProfileSyncServiceFactory::GetForProfile(profile_);
53 if (pss) {
54 pss->AddObserverForDeviceInfoChange(this);
55 }
56 }
57
~SignedInDevicesChangeObserver()58 SignedInDevicesChangeObserver::~SignedInDevicesChangeObserver() {
59 ProfileSyncService* pss = ProfileSyncServiceFactory::GetForProfile(profile_);
60 if (pss) {
61 pss->RemoveObserverForDeviceInfoChange(this);
62 }
63
64 }
65
OnDeviceInfoChange()66 void SignedInDevicesChangeObserver::OnDeviceInfoChange() {
67 // There is a change in the list of devices. Get all devices and send them to
68 // the listener.
69 ScopedVector<DeviceInfo> devices = GetAllSignedInDevices(extension_id_,
70 profile_);
71
72 std::vector<linked_ptr<api::signed_in_devices::DeviceInfo> > args;
73
74 for (ScopedVector<DeviceInfo>::const_iterator it = devices.begin();
75 it != devices.end();
76 ++it) {
77 linked_ptr<api::signed_in_devices::DeviceInfo> api_device =
78 make_linked_ptr(new api::signed_in_devices::DeviceInfo);
79 FillDeviceInfo(*(*it), api_device.get());
80 args.push_back(api_device);
81 }
82
83 scoped_ptr<base::ListValue> result =
84 api::signed_in_devices::OnDeviceInfoChange::Create(args);
85 scoped_ptr<Event> event(new Event(
86 api::signed_in_devices::OnDeviceInfoChange::kEventName,
87 result.Pass()));
88
89 event->restrict_to_browser_context = profile_;
90
91 ExtensionSystem::Get(profile_)->event_router()->DispatchEventToExtension(
92 extension_id_, event.Pass());
93 }
94
95 static base::LazyInstance<ProfileKeyedAPIFactory<SignedInDevicesManager> >
96 g_factory = LAZY_INSTANCE_INITIALIZER;
97
98 // static
99 ProfileKeyedAPIFactory<SignedInDevicesManager>*
GetFactoryInstance()100 SignedInDevicesManager::GetFactoryInstance() {
101 return &g_factory.Get();
102 }
103
SignedInDevicesManager()104 SignedInDevicesManager::SignedInDevicesManager()
105 : profile_(NULL) {}
106
SignedInDevicesManager(Profile * profile)107 SignedInDevicesManager::SignedInDevicesManager(Profile* profile)
108 : profile_(profile) {
109 extensions::EventRouter* router = extensions::ExtensionSystem::Get(
110 profile_)->event_router();
111
112 if (router) {
113 router->RegisterObserver(
114 this, api::signed_in_devices::OnDeviceInfoChange::kEventName);
115 }
116
117 // Register for unload event so we could clear all our listeners when
118 // extensions have unloaded.
119 registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED,
120 content::Source<Profile>(profile_->GetOriginalProfile()));
121 }
122
~SignedInDevicesManager()123 SignedInDevicesManager::~SignedInDevicesManager() {}
124
OnListenerAdded(const EventListenerInfo & details)125 void SignedInDevicesManager::OnListenerAdded(
126 const EventListenerInfo& details) {
127 for (ScopedVector<SignedInDevicesChangeObserver>::const_iterator it =
128 change_observers_.begin();
129 it != change_observers_.end();
130 ++it) {
131 if ((*it)->extension_id() == details.extension_id) {
132 DCHECK(false) <<"OnListenerAded fired twice for same extension";
133 return;
134 }
135 }
136
137 change_observers_.push_back(new SignedInDevicesChangeObserver(
138 details.extension_id,
139 profile_));
140 }
141
OnListenerRemoved(const EventListenerInfo & details)142 void SignedInDevicesManager::OnListenerRemoved(
143 const EventListenerInfo& details) {
144 RemoveChangeObserverForExtension(details.extension_id);
145 }
146
147
RemoveChangeObserverForExtension(const std::string & extension_id)148 void SignedInDevicesManager::RemoveChangeObserverForExtension(
149 const std::string& extension_id) {
150 for (ScopedVector<SignedInDevicesChangeObserver>::iterator it =
151 change_observers_.begin();
152 it != change_observers_.end();
153 ++it) {
154 if ((*it)->extension_id() == extension_id) {
155 change_observers_.erase(it);
156 return;
157 }
158 }
159 }
160
Observe(int type,const content::NotificationSource & source,const content::NotificationDetails & details)161 void SignedInDevicesManager::Observe(
162 int type,
163 const content::NotificationSource& source,
164 const content::NotificationDetails& details) {
165 DCHECK_EQ(type, chrome::NOTIFICATION_EXTENSION_UNLOADED);
166 UnloadedExtensionInfo* reason =
167 content::Details<UnloadedExtensionInfo>(details).ptr();
168 RemoveChangeObserverForExtension(reason->extension->id());
169 }
170
171 } // namespace extensions
172
173