ash/bluetooth_devices_observer.cc

   1 // Copyright 2018 The Chromium Authors
   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 "ash/bluetooth_devices_observer.h"
   6
   7 #include "base/bind.h"
   8 #include "device/bluetooth/bluetooth_adapter_factory.h"
   9
  10 namespace ash {
  11
  12 BluetoothDevicesObserver::BluetoothDevicesObserver(
  13     const AdapterOrDeviceChangedCallback& device_changed_callback)
  14     : adapter_or_device_changed_callback_(device_changed_callback) {
  15   if (device::BluetoothAdapterFactory::IsBluetoothSupported()) {
  16     device::BluetoothAdapterFactory::Get()->GetAdapter(
  17         base::BindOnce(&BluetoothDevicesObserver::InitializeOnAdapterReady,
  18                        weak_factory_.GetWeakPtr()));
  19   } else {
  20     adapter_or_device_changed_callback_.Run(/*device=*/nullptr);
  21   }
  22 }
  23
  24 BluetoothDevicesObserver::~BluetoothDevicesObserver() {
  25   if (bluetooth_adapter_)
  26     bluetooth_adapter_->RemoveObserver(this);
  27 }
  28
  29 void BluetoothDevicesObserver::AdapterPresentChanged(
  30     device::BluetoothAdapter* adapter,
  31     bool present) {
  32   adapter_or_device_changed_callback_.Run(/*device=*/nullptr);
  33 }
  34
  35 void BluetoothDevicesObserver::AdapterPoweredChanged(
  36     device::BluetoothAdapter* adapter,
  37     bool powered) {
  38   adapter_or_device_changed_callback_.Run(/*device=*/nullptr);
  39 }
  40
  41 void BluetoothDevicesObserver::DeviceChanged(device::BluetoothAdapter* adapter,
  42                                              device::BluetoothDevice* device) {
  43   adapter_or_device_changed_callback_.Run(device);
  44 }
  45
  46 void BluetoothDevicesObserver::InitializeOnAdapterReady(
  47     scoped_refptr<device::BluetoothAdapter> adapter) {
  48   bluetooth_adapter_ = std::move(adapter);
  49   bluetooth_adapter_->AddObserver(this);
  50 }
  51
  52 bool BluetoothDevicesObserver::IsConnectedBluetoothDevice(
  53     const ui::InputDevice& input_device) const {
  54   if (!bluetooth_adapter_ || !bluetooth_adapter_->IsPresent() ||
  55       !bluetooth_adapter_->IsInitialized() ||
  56       !bluetooth_adapter_->IsPowered()) {
  57     return false;
  58   }
  59
  60   // Since there is no map from an InputDevice to a BluetoothDevice. We just
  61   // comparing their vendor id and product id to guess a match.
  62   for (auto* device : bluetooth_adapter_->GetDevices()) {
  63     if (!device->IsConnected())
  64       continue;
  65
  66     if (device->GetVendorID() == input_device.vendor_id &&
  67         device->GetProductID() == input_device.product_id) {
  68       return true;
  69     }
  70   }
  71
  72   return false;
  73 }
  74
  75 }  // namespace ash