| // 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. |
| |
| #ifndef DEVICE_HID_HID_SERVICE_LINUX_H_ |
| #define DEVICE_HID_HID_SERVICE_LINUX_H_ |
| |
| #include "base/compiler_specific.h" |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "device/hid/hid_device_info.h" |
| #include "device/hid/hid_service.h" |
| |
| namespace device { |
| |
| class HidConnection; |
| |
| class HidServiceLinux : public HidService { |
| public: |
| HidServiceLinux(scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner); |
| |
| void Connect(const HidDeviceId& device_id, |
| const ConnectCallback& callback) override; |
| |
| private: |
| struct ConnectParams; |
| class FileThreadHelper; |
| |
| ~HidServiceLinux() override; |
| |
| // Constructs this services helper object that lives on the FILE thread. |
| static void StartHelper( |
| base::WeakPtr<HidServiceLinux> weak_ptr, |
| scoped_refptr<base::SingleThreadTaskRunner> task_runner); |
| |
| // These functions implement the process of locating, requesting access to and |
| // opening a device. Because this operation crosses multiple threads these |
| // functions are static and the necessary parameters are passed as a single |
| // struct. |
| #if defined(OS_CHROMEOS) |
| static void OnRequestPathAccessComplete(scoped_ptr<ConnectParams> params, |
| bool success); |
| #endif // defined(OS_CHROMEOS) |
| static void OpenDevice(scoped_ptr<ConnectParams> params); |
| static void ConnectImpl(scoped_ptr<ConnectParams> params); |
| |
| scoped_refptr<base::SingleThreadTaskRunner> task_runner_; |
| scoped_refptr<base::SingleThreadTaskRunner> file_task_runner_; |
| |
| // The helper lives on the FILE thread and holds a weak reference back to the |
| // service that owns it. |
| scoped_ptr<FileThreadHelper> helper_; |
| base::WeakPtrFactory<HidServiceLinux> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(HidServiceLinux); |
| }; |
| |
| } // namespace device |
| |
| #endif // DEVICE_HID_HID_SERVICE_LINUX_H_ |