Reland "Add Linux support for the Bluetooth API"

device/bluetooth/bluetooth_gatt_connection_chromeos.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 "device/bluetooth/bluetooth_gatt_connection_chromeos.h"
-
-#include "base/bind.h"
-#include "base/logging.h"
-#include "device/bluetooth/bluetooth_adapter.h"
-#include "device/bluetooth/bluetooth_device.h"
-#include "device/bluetooth/dbus/bluez_dbus_manager.h"
-
-namespace chromeos {
-
-BluetoothGattConnectionChromeOS::BluetoothGattConnectionChromeOS(
-    scoped_refptr<device::BluetoothAdapter> adapter,
-    const std::string& device_address,
-    const dbus::ObjectPath& object_path)
-    : BluetoothGattConnection(adapter.get(), device_address),
-      connected_(true),
-      object_path_(object_path) {
-  DCHECK(adapter_.get());
-  DCHECK(!device_address_.empty());
-  DCHECK(object_path_.IsValid());
-
-  bluez::BluezDBusManager::Get()->GetBluetoothDeviceClient()->AddObserver(this);
-}
-
-BluetoothGattConnectionChromeOS::~BluetoothGattConnectionChromeOS() {
-  bluez::BluezDBusManager::Get()->GetBluetoothDeviceClient()->RemoveObserver(
-      this);
-  Disconnect();
-}
-
-bool BluetoothGattConnectionChromeOS::IsConnected() {
-  // Lazily determine the activity state of the connection. If already
-  // marked as inactive, then return false. Otherwise, explicitly mark
-  // |connected_| as false if the device is removed or disconnected. We do this,
-  // so that if this method is called during a call to DeviceRemoved or
-  // DeviceChanged somewhere else, it returns the correct status.
-  if (!connected_)
-    return false;
-
-  bluez::BluetoothDeviceClient::Properties* properties =
-      bluez::BluezDBusManager::Get()->GetBluetoothDeviceClient()->GetProperties(
-          object_path_);
-  if (!properties || !properties->connected.value())
-    connected_ = false;
-
-  return connected_;
-}
-
-void BluetoothGattConnectionChromeOS::Disconnect() {
-  if (!connected_) {
-    VLOG(1) << "Connection already inactive.";
-    return;
-  }
-
-  // TODO(armansito): There isn't currently a good way to manage the ownership
-  // of a connection between Chrome and bluetoothd plugins/profiles. Until
-  // a proper reference count is kept by bluetoothd, we might unwittingly kill
-  // a connection that is managed by the daemon (e.g. HoG). For now, just return
-  // success to indicate that this BluetoothGattConnection is no longer active,
-  // even though the underlying connection won't actually be disconnected. This
-  // technically doesn't violate the contract put forth by this API.
-  connected_ = false;
-}
-
-void BluetoothGattConnectionChromeOS::DeviceRemoved(
-    const dbus::ObjectPath& object_path) {
-  if (object_path != object_path_)
-    return;
-
-  connected_ = false;
-}
-
-void BluetoothGattConnectionChromeOS::DevicePropertyChanged(
-    const dbus::ObjectPath& object_path,
-    const std::string& property_name) {
-  if (object_path != object_path_)
-    return;
-
-  if (!connected_)
-    return;
-
-  bluez::BluetoothDeviceClient::Properties* properties =
-      bluez::BluezDBusManager::Get()->GetBluetoothDeviceClient()->GetProperties(
-          object_path_);
-
-  if (!properties) {
-    connected_ = false;
-    return;
-  }
-
-  if (property_name == properties->connected.name() &&
-      !properties->connected.value())
-    connected_ = false;
-
-  // The remote device's bluetooth address may change if it is paired while
-  // connected.
-  if (property_name == properties->address.name())
-    device_address_ = properties->address.value();
-}
-
-}  // namespace chromeos