bluetooth: Add Device connection logic and accompanying user interface.

device/bluetooth/device.cc

 // Copyright 2016 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 <utility>
+#include <vector>
 
+#include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
 #include "device/bluetooth/device.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 
 namespace bluetooth {
 
-Device::Device(const std::string& address,
-               scoped_refptr<device::BluetoothAdapter> adapter)
-    : address_(address), adapter_(std::move(adapter)) {}
+Device::Device(scoped_refptr<device::BluetoothAdapter> adapter,
+               std::unique_ptr<device::BluetoothGattConnection> connection,
+               mojom::DeviceRequest request)
+    : adapter_(std::move(adapter)),
+      connection_(std::move(connection)),
+      binding_(this, std::move(request)) {
+  binding_.set_connection_error_handler(
+      base::Bind(&Device::Disconnect, base::Unretained(this)));
 
-Device::~Device() {}
+  adapter_->AddObserver(this);
+}
+
+Device::~Device() {
+  binding_.Close();
+
+  if (connection_->IsConnected())
+    connection_->Disconnect();
+
+  adapter_->RemoveObserver(this);
+}
 
 // static
 mojom::DeviceInfoPtr Device::ConstructDeviceInfoStruct(
     const device::BluetoothDevice* device) {
   mojom::DeviceInfoPtr device_info = mojom::DeviceInfo::New();
 
   device_info->name = device->GetName();
   device_info->name_for_display =
       base::UTF16ToUTF8(device->GetNameForDisplay());
   device_info->address = device->GetAddress();
+  device_info->is_gatt_connected = device->IsGattConnected();
 
   if (device->GetInquiryRSSI()) {
     device_info->rssi = mojom::RSSIWrapper::New();
     device_info->rssi->value = device->GetInquiryRSSI().value();
   }
 
   return device_info;
 }
 
+void Device::set_connection_error_handler(const base::Closure& closure) {
+  binding_.set_connection_error_handler(closure);
+}
+
+void Device::DeviceChanged(device::BluetoothAdapter* adapter,
+                           device::BluetoothDevice* device) {
+  if (device->GetAddress() == GetAddress()) {
+    if (!device->IsGattConnected()) {
+      delete this;
+    }
+  }
+}
+
+void Device::GattServicesDiscovered(device::BluetoothAdapter* adapter,
+                                    device::BluetoothDevice* device) {
+  if (device->GetAddress() == GetAddress()) {
+    for (const base::Closure& request : pending_services_requests_) {
+      request.Run();
+    }
+
+    pending_services_requests_.clear();
+  }
+}
+
+void Device::Disconnect() {
+  delete this;
+}
+
 void Device::GetInfo(const GetInfoCallback& callback) {
-  device::BluetoothDevice* device = adapter_->GetDevice(address_);
+  device::BluetoothDevice* device = adapter_->GetDevice(GetAddress());
   if (device) {
     mojom::DeviceInfoPtr device_info = ConstructDeviceInfoStruct(device);
     callback.Run(std::move(device_info));
   } else {
     callback.Run(nullptr);
   }
 }
 
+void Device::GetServices(const GetServicesCallback& callback) {
+  device::BluetoothDevice* device = adapter_->GetDevice(GetAddress());
+
+  if (device) {
+    if (device->IsGattServicesDiscoveryComplete()) {
+      GetServicesImpl(callback);
+      return;
+    }
+
+    pending_services_requests_.push_back(
+        base::Bind(&Device::GetServicesImpl, base::Unretained(this), callback));
+    return;
+  }
+
+  callback.Run(std::vector<mojom::ServiceInfoPtr>());
+}
+
+void Device::GetServicesImpl(const GetServicesCallback& callback) {
+  device::BluetoothDevice* device = adapter_->GetDevice(GetAddress());
+  std::vector<mojom::ServiceInfoPtr> services;
+
+  for (const device::BluetoothRemoteGattService* service :
+       device->GetGattServices()) {
+    mojom::ServiceInfoPtr service_info = ConstructServiceInfoStruct(service);
+    services.push_back(std::move(service_info));
+  }
+
+  callback.Run(std::move(services));
+}
+
+mojom::ServiceInfoPtr Device::ConstructServiceInfoStruct(
+    const device::BluetoothRemoteGattService* service) {
+  mojom::ServiceInfoPtr service_info = mojom::ServiceInfo::New();
+
+  service_info->uuid = service->GetUUID();
+  service_info->is_primary = service->IsPrimary();
+
+  return service_info;
+}
+
+std::string Device::GetAddress() {
+  return connection_->GetDeviceAddress();
+}
+
 }  // namespace bluetooth