chrome.bluetoothLowEnergy: Implement getService and getServices.

chrome/browser/extensions/api/bluetooth_low_energy/bluetooth_low_energy_api.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/api/bluetooth_low_energy/bluetooth_low_energy_api.h"
 
+#include "base/bind.h"
+#include "base/lazy_instance.h"
+#include "base/strings/stringprintf.h"
+#include "chrome/browser/extensions/api/bluetooth_low_energy/bluetooth_low_energy_event_router.h"
+#include "chrome/common/extensions/api/bluetooth_low_energy.h"
+#include "content/public/browser/browser_thread.h"
+#include "extensions/browser/event_router.h"
+
+using content::BrowserContext;
+using content::BrowserThread;
+
+namespace apibtle = extensions::api::bluetooth_low_energy;
+
+namespace {
+
+const char kErrorAdapterNotInitialized[] =
+    "Could not initialize Bluetooth adapter.";
+const char kErrorDeviceNotFoundFormat[] =
+    "Device with address \"%s\" not found.";
+const char kErrorServiceNotFoundFormat[] = "Service with ID \"%s\" not found.";
+const char kErrorPlatformNotSupported[] =
+    "This operation is not supported on the current platform";
+
+extensions::BluetoothLowEnergyEventRouter* GetEventRouter(
+    BrowserContext* context) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  return extensions::BluetoothLowEnergyAPI::Get(context)->event_router();
+}
+
+void DoWorkCallback(const base::Callback<bool()>& callback) {
+  DCHECK(!callback.is_null());
+  callback.Run();
+}
+
+}  // namespace
+
 namespace extensions {
+
+static base::LazyInstance<BrowserContextKeyedAPIFactory<BluetoothLowEnergyAPI> >
+    g_factory = LAZY_INSTANCE_INITIALIZER;
+
+// static
+BrowserContextKeyedAPIFactory<BluetoothLowEnergyAPI>*
+BluetoothLowEnergyAPI::GetFactoryInstance() {
+  return g_factory.Pointer();
+}
+
+// static
+BluetoothLowEnergyAPI* BluetoothLowEnergyAPI::Get(BrowserContext* context) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  return GetFactoryInstance()->Get(context);
+}
+
+BluetoothLowEnergyAPI::BluetoothLowEnergyAPI(BrowserContext* context)
+    : event_router_(new BluetoothLowEnergyEventRouter(context)),
+      browser_context_(context) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+}
+
+BluetoothLowEnergyAPI::~BluetoothLowEnergyAPI() {
+}
+
+void BluetoothLowEnergyAPI::Shutdown() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+}
+
 namespace api {
 
-bool BluetoothLowEnergyGetServiceFunction::RunImpl() {
-  // TODO(armansito): Implement.
-  SetError("Call not supported.");
-  return false;
-}
-
-bool BluetoothLowEnergyGetServicesFunction::RunImpl() {
-  // TODO(armansito): Implement.
-  SetError("Call not supported.");
-  return false;
-}
-
-bool BluetoothLowEnergyGetCharacteristicFunction::RunImpl() {
-  // TODO(armansito): Implement.
-  SetError("Call not supported.");
-  return false;
-}
-
-bool BluetoothLowEnergyGetCharacteristicsFunction::RunImpl() {
-  // TODO(armansito): Implement.
-  SetError("Call not supported.");
-  return false;
-}
-
-bool BluetoothLowEnergyGetIncludedServicesFunction::RunImpl() {
-  // TODO(armansito): Implement.
-  SetError("Call not supported.");
-  return false;
-}
-
-bool BluetoothLowEnergyGetDescriptorFunction::RunImpl() {
-  // TODO(armansito): Implement.
-  SetError("Call not supported.");
-  return false;
-}
-
-bool BluetoothLowEnergyGetDescriptorsFunction::RunImpl() {
-  // TODO(armansito): Implement.
-  SetError("Call not supported.");
-  return false;
-}
-
-bool BluetoothLowEnergyReadCharacteristicValueFunction::RunImpl() {
-  // TODO(armansito): Implement.
-  SetError("Call not supported.");
-  return false;
-}
-
-bool BluetoothLowEnergyWriteCharacteristicValueFunction::RunImpl() {
-  // TODO(armansito): Implement.
-  SetError("Call not supported.");
-  return false;
-}
-
-bool BluetoothLowEnergyReadDescriptorValueFunction::RunImpl() {
-  // TODO(armansito): Implement.
-  SetError("Call not supported.");
-  return false;
-}
-
-bool BluetoothLowEnergyWriteDescriptorValueFunction::RunImpl() {
-  // TODO(armansito): Implement.
-  SetError("Call not supported.");
-  return false;
-}
-
+BluetoothLowEnergyExtensionFunction::BluetoothLowEnergyExtensionFunction() {
+}
+
+BluetoothLowEnergyExtensionFunction::~BluetoothLowEnergyExtensionFunction() {
+}
+
+bool BluetoothLowEnergyExtensionFunction::RunImpl() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  BluetoothLowEnergyEventRouter* event_router =
+      GetEventRouter(browser_context());
+  if (!event_router->IsBluetoothSupported()) {
+    SetError(kErrorPlatformNotSupported);
+    return false;
+  }
+
+  // It is safe to pass |this| here as ExtensionFunction is refcounted.
+  if (!event_router->InitializeAdapterAndInvokeCallback(base::Bind(
+          &DoWorkCallback,
+          base::Bind(&BluetoothLowEnergyExtensionFunction::DoWork, this)))) {
+    SetError(kErrorAdapterNotInitialized);
+    return false;
+  }
+
+  return true;
+}
+
+bool BluetoothLowEnergyGetServiceFunction::DoWork() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  BluetoothLowEnergyEventRouter* event_router =
+      GetEventRouter(browser_context());
+
+  // The adapter must be initialized at this point, but return an error instead
+  // of asserting.
+  if (!event_router->HasAdapter()) {
+    SetError(kErrorAdapterNotInitialized);
+    SendResponse(false);
+    return false;
+  }
+
+  scoped_ptr<apibtle::GetService::Params> params(
+      apibtle::GetService::Params::Create(*args_));
+  EXTENSION_FUNCTION_VALIDATE(params.get() != NULL);
+
+  std::string service_id = params->service_id;
+
+  apibtle::Service service;
+  if (!event_router->GetService(service_id, &service)) {
+    SetError(
+        base::StringPrintf(kErrorServiceNotFoundFormat, service_id.c_str()));
+    SendResponse(false);
+    return false;
+  }
+
+  results_ = apibtle::GetService::Results::Create(service);
+  SendResponse(true);
+
+  return true;
+}
+
+bool BluetoothLowEnergyGetServicesFunction::DoWork() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  BluetoothLowEnergyEventRouter* event_router =
+      GetEventRouter(browser_context());
+
+  // The adapter must be initialized at this point, but return an error instead
+  // of asserting.
+  if (!event_router->HasAdapter()) {
+    SetError(kErrorAdapterNotInitialized);
+    SendResponse(false);
+    return false;
+  }
+
+  scoped_ptr<apibtle::GetServices::Params> params(
+      apibtle::GetServices::Params::Create(*args_));
+  EXTENSION_FUNCTION_VALIDATE(params.get() != NULL);
+
+  std::string device_address = params->device_address;
+
+  BluetoothLowEnergyEventRouter::ServiceList service_list;
+  if (!event_router->GetServices(device_address, &service_list)) {
+    SetError(
+        base::StringPrintf(kErrorDeviceNotFoundFormat, device_address.c_str()));
+    SendResponse(false);
+    return false;
+  }
+
+  results_ = apibtle::GetServices::Results::Create(service_list).Pass();
+  SendResponse(true);
+
+  return true;
+}
+
+bool BluetoothLowEnergyGetCharacteristicFunction::DoWork() {
+  // TODO(armansito): Implement.
+  SetError("Call not supported.");
+  SendResponse(false);
+  return false;
+}
+
+bool BluetoothLowEnergyGetCharacteristicsFunction::DoWork() {
+  // TODO(armansito): Implement.
+  SetError("Call not supported.");
+  SendResponse(false);
+  return false;
+}
+
+bool BluetoothLowEnergyGetIncludedServicesFunction::DoWork() {
+  // TODO(armansito): Implement.
+  SetError("Call not supported.");
+  SendResponse(false);
+  return false;
+}
+
+bool BluetoothLowEnergyGetDescriptorFunction::DoWork() {
+  // TODO(armansito): Implement.
+  SetError("Call not supported.");
+  SendResponse(false);
+  return false;
+}
+
+bool BluetoothLowEnergyGetDescriptorsFunction::DoWork() {
+  // TODO(armansito): Implement.
+  SetError("Call not supported.");
+  SendResponse(false);
+  return false;
+}
+
+bool BluetoothLowEnergyReadCharacteristicValueFunction::DoWork() {
+  // TODO(armansito): Implement.
+  SetError("Call not supported.");
+  SendResponse(false);
+  return false;
+}
+
+bool BluetoothLowEnergyWriteCharacteristicValueFunction::DoWork() {
+  // TODO(armansito): Implement.
+  SetError("Call not supported.");
+  SendResponse(false);
+  return false;
+}
+
+bool BluetoothLowEnergyReadDescriptorValueFunction::DoWork() {
+  // TODO(armansito): Implement.
+  SetError("Call not supported.");
+  SendResponse(false);
+  return false;
+}
+
+bool BluetoothLowEnergyWriteDescriptorValueFunction::DoWork() {
+  // TODO(armansito): Implement.
+  SetError("Call not supported.");
+  SendResponse(false);
+  return false;
+}
+
 }  // namespace api
 }  // namespace extensions