1 // Copyright (c) 2012 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/bluetooth/bluetooth_api.h"
6
7 #include <string>
8
9 #include "base/bind_helpers.h"
10 #include "base/lazy_instance.h"
11 #include "base/memory/ref_counted.h"
12 #include "chrome/browser/extensions/api/bluetooth/bluetooth_api_utils.h"
13 #include "chrome/browser/extensions/api/bluetooth/bluetooth_event_router.h"
14 #include "chrome/browser/profiles/profile_manager.h"
15 #include "chrome/common/extensions/api/bluetooth.h"
16 #include "content/public/browser/browser_thread.h"
17 #include "device/bluetooth/bluetooth_adapter.h"
18 #include "device/bluetooth/bluetooth_device.h"
19 #include "extensions/browser/event_router.h"
20
21 using content::BrowserContext;
22 using content::BrowserThread;
23
24 using device::BluetoothAdapter;
25 using device::BluetoothDevice;
26
27 namespace bluetooth = extensions::api::bluetooth;
28 namespace GetDevice = extensions::api::bluetooth::GetDevice;
29 namespace GetDevices = extensions::api::bluetooth::GetDevices;
30
31 namespace {
32
33 const char kInvalidDevice[] = "Invalid device";
34 const char kStartDiscoveryFailed[] = "Starting discovery failed";
35 const char kStopDiscoveryFailed[] = "Failed to stop discovery";
36
GetEventRouter(BrowserContext * context)37 extensions::BluetoothEventRouter* GetEventRouter(BrowserContext* context) {
38 // Note: |context| is valid on UI thread only.
39 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
40 return extensions::BluetoothAPI::Get(context)->event_router();
41 }
42
43 } // namespace
44
45 namespace extensions {
46
47 static base::LazyInstance<BrowserContextKeyedAPIFactory<BluetoothAPI> >
48 g_factory = LAZY_INSTANCE_INITIALIZER;
49
50 // static
51 BrowserContextKeyedAPIFactory<BluetoothAPI>*
GetFactoryInstance()52 BluetoothAPI::GetFactoryInstance() {
53 return g_factory.Pointer();
54 }
55
56 // static
Get(BrowserContext * context)57 BluetoothAPI* BluetoothAPI::Get(BrowserContext* context) {
58 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
59 return GetFactoryInstance()->Get(context);
60 }
61
BluetoothAPI(content::BrowserContext * context)62 BluetoothAPI::BluetoothAPI(content::BrowserContext* context)
63 : browser_context_(context) {
64 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
65 EventRouter* event_router = EventRouter::Get(browser_context_);
66 event_router->RegisterObserver(this,
67 bluetooth::OnAdapterStateChanged::kEventName);
68 event_router->RegisterObserver(this, bluetooth::OnDeviceAdded::kEventName);
69 event_router->RegisterObserver(this, bluetooth::OnDeviceChanged::kEventName);
70 event_router->RegisterObserver(this, bluetooth::OnDeviceRemoved::kEventName);
71 }
72
~BluetoothAPI()73 BluetoothAPI::~BluetoothAPI() {}
74
event_router()75 BluetoothEventRouter* BluetoothAPI::event_router() {
76 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
77 if (!event_router_) {
78 event_router_.reset(new BluetoothEventRouter(browser_context_));
79 }
80 return event_router_.get();
81 }
82
Shutdown()83 void BluetoothAPI::Shutdown() {
84 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
85 EventRouter::Get(browser_context_)->UnregisterObserver(this);
86 }
87
OnListenerAdded(const EventListenerInfo & details)88 void BluetoothAPI::OnListenerAdded(const EventListenerInfo& details) {
89 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
90 if (event_router()->IsBluetoothSupported())
91 event_router()->OnListenerAdded();
92 }
93
OnListenerRemoved(const EventListenerInfo & details)94 void BluetoothAPI::OnListenerRemoved(const EventListenerInfo& details) {
95 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
96 if (event_router()->IsBluetoothSupported())
97 event_router()->OnListenerRemoved();
98 }
99
100 namespace api {
101
~BluetoothGetAdapterStateFunction()102 BluetoothGetAdapterStateFunction::~BluetoothGetAdapterStateFunction() {}
103
DoWork(scoped_refptr<BluetoothAdapter> adapter)104 bool BluetoothGetAdapterStateFunction::DoWork(
105 scoped_refptr<BluetoothAdapter> adapter) {
106 bluetooth::AdapterState state;
107 PopulateAdapterState(*adapter.get(), &state);
108 results_ = bluetooth::GetAdapterState::Results::Create(state);
109 SendResponse(true);
110 return true;
111 }
112
~BluetoothGetDevicesFunction()113 BluetoothGetDevicesFunction::~BluetoothGetDevicesFunction() {}
114
DoWork(scoped_refptr<BluetoothAdapter> adapter)115 bool BluetoothGetDevicesFunction::DoWork(
116 scoped_refptr<BluetoothAdapter> adapter) {
117 DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
118
119 base::ListValue* device_list = new base::ListValue;
120 SetResult(device_list);
121
122 BluetoothAdapter::DeviceList devices = adapter->GetDevices();
123 for (BluetoothAdapter::DeviceList::const_iterator iter = devices.begin();
124 iter != devices.end();
125 ++iter) {
126 const BluetoothDevice* device = *iter;
127 DCHECK(device);
128
129 bluetooth::Device extension_device;
130 bluetooth::BluetoothDeviceToApiDevice(*device, &extension_device);
131
132 device_list->Append(extension_device.ToValue().release());
133 }
134
135 SendResponse(true);
136
137 return true;
138 }
139
~BluetoothGetDeviceFunction()140 BluetoothGetDeviceFunction::~BluetoothGetDeviceFunction() {}
141
DoWork(scoped_refptr<BluetoothAdapter> adapter)142 bool BluetoothGetDeviceFunction::DoWork(
143 scoped_refptr<BluetoothAdapter> adapter) {
144 DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
145
146 scoped_ptr<GetDevice::Params> params(GetDevice::Params::Create(*args_));
147 EXTENSION_FUNCTION_VALIDATE(params.get() != NULL);
148
149 BluetoothDevice* device = adapter->GetDevice(params->device_address);
150 if (device) {
151 bluetooth::Device extension_device;
152 bluetooth::BluetoothDeviceToApiDevice(*device, &extension_device);
153 SetResult(extension_device.ToValue().release());
154 SendResponse(true);
155 } else {
156 SetError(kInvalidDevice);
157 SendResponse(false);
158 }
159
160 return false;
161 }
162
OnSuccessCallback()163 void BluetoothStartDiscoveryFunction::OnSuccessCallback() {
164 SendResponse(true);
165 }
166
OnErrorCallback()167 void BluetoothStartDiscoveryFunction::OnErrorCallback() {
168 SetError(kStartDiscoveryFailed);
169 SendResponse(false);
170 }
171
DoWork(scoped_refptr<BluetoothAdapter> adapter)172 bool BluetoothStartDiscoveryFunction::DoWork(
173 scoped_refptr<BluetoothAdapter> adapter) {
174 GetEventRouter(browser_context())->StartDiscoverySession(
175 adapter,
176 extension_id(),
177 base::Bind(&BluetoothStartDiscoveryFunction::OnSuccessCallback, this),
178 base::Bind(&BluetoothStartDiscoveryFunction::OnErrorCallback, this));
179
180 return true;
181 }
182
OnSuccessCallback()183 void BluetoothStopDiscoveryFunction::OnSuccessCallback() {
184 SendResponse(true);
185 }
186
OnErrorCallback()187 void BluetoothStopDiscoveryFunction::OnErrorCallback() {
188 SetError(kStopDiscoveryFailed);
189 SendResponse(false);
190 }
191
DoWork(scoped_refptr<BluetoothAdapter> adapter)192 bool BluetoothStopDiscoveryFunction::DoWork(
193 scoped_refptr<BluetoothAdapter> adapter) {
194 GetEventRouter(browser_context())->StopDiscoverySession(
195 adapter,
196 extension_id(),
197 base::Bind(&BluetoothStopDiscoveryFunction::OnSuccessCallback, this),
198 base::Bind(&BluetoothStopDiscoveryFunction::OnErrorCallback, this));
199
200 return true;
201 }
202
203 } // namespace api
204 } // namespace extensions
205