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- // 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 SERVICES_DEVICE_HID_HID_SERVICE_LINUX_H_
- #define SERVICES_DEVICE_HID_HID_SERVICE_LINUX_H_
- #include <memory>
- #include "base/compiler_specific.h"
- #include "base/files/scoped_file.h"
- #include "base/memory/weak_ptr.h"
- #include "base/task/sequenced_task_runner.h"
- #include "build/build_config.h"
- #include "build/chromeos_buildflags.h"
- #include "services/device/hid/hid_device_info.h"
- #include "services/device/hid/hid_service.h"
- namespace device {
- class HidServiceLinux : public HidService {
- public:
- HidServiceLinux();
- HidServiceLinux(HidServiceLinux&) = delete;
- HidServiceLinux& operator=(HidServiceLinux&) = delete;
- ~HidServiceLinux() override;
- // HidService:
- void Connect(const std::string& device_id,
- bool allow_protected_reports,
- bool allow_fido_reports,
- ConnectCallback callback) override;
- base::WeakPtr<HidService> GetWeakPtr() override;
- private:
- struct ConnectParams;
- class BlockingTaskRunnerHelper;
- // 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 BUILDFLAG(IS_CHROMEOS_ASH)
- static void OnPathOpenComplete(std::unique_ptr<ConnectParams> params,
- base::ScopedFD fd);
- static void OnPathOpenError(const std::string& device_path,
- ConnectCallback callback,
- const std::string& error_name,
- const std::string& error_message);
- #else
- static void OpenOnBlockingThread(std::unique_ptr<ConnectParams> params);
- #endif
- static void FinishOpen(std::unique_ptr<ConnectParams> params);
- const scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
- // |helper_| lives on the sequence |blocking_task_runner_| posts to and holds
- // a weak reference back to the service that owns it.
- std::unique_ptr<BlockingTaskRunnerHelper, base::OnTaskRunnerDeleter> helper_;
- base::WeakPtrFactory<HidServiceLinux> weak_factory_{this};
- };
- } // namespace device
- #endif // SERVICES_DEVICE_HID_HID_SERVICE_LINUX_H_
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