services/device/serial/serial_port_manager_impl.cc

   1 // Copyright 2017 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 "services/device/serial/serial_port_manager_impl.h"
   6
   7 #include <string>
   8 #include <utility>
   9
  10 #include "base/sequenced_task_runner.h"
  11 #include "mojo/public/cpp/bindings/strong_binding.h"
  12 #include "services/device/serial/serial_device_enumerator.h"
  13 #include "services/device/serial/serial_port_impl.h"
  14
  15 namespace device {
  16
  17 SerialPortManagerImpl::SerialPortManagerImpl(
  18     scoped_refptr<base::SingleThreadTaskRunner> io_task_runner,
  19     scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner)
  20     : io_task_runner_(std::move(io_task_runner)),
  21       ui_task_runner_(std::move(ui_task_runner)) {}
  22
  23 SerialPortManagerImpl::~SerialPortManagerImpl() = default;
  24
  25 void SerialPortManagerImpl::Bind(mojom::SerialPortManagerRequest request) {
  26   bindings_.AddBinding(this, std::move(request));
  27 }
  28
  29 void SerialPortManagerImpl::SetSerialEnumeratorForTesting(
  30     std::unique_ptr<SerialDeviceEnumerator> fake_enumerator) {
  31   DCHECK(fake_enumerator);
  32   enumerator_ = std::move(fake_enumerator);
  33 }
  34
  35 void SerialPortManagerImpl::GetDevices(GetDevicesCallback callback) {
  36   if (!enumerator_)
  37     enumerator_ = SerialDeviceEnumerator::Create();
  38   std::move(callback).Run(enumerator_->GetDevices());
  39 }
  40
  41 void SerialPortManagerImpl::GetPort(const base::UnguessableToken& token,
  42                                     mojom::SerialPortRequest request) {
  43   if (!enumerator_)
  44     enumerator_ = SerialDeviceEnumerator::Create();
  45   base::Optional<base::FilePath> path = enumerator_->GetPathFromToken(token);
  46   if (path) {
  47     io_task_runner_->PostTask(
  48         FROM_HERE, base::BindOnce(&SerialPortImpl::Create, *path,
  49                                   std::move(request), ui_task_runner_));
  50   }
  51 }
  52
  53 }  // namespace device