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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_BASE_X_X11_USER_INPUT_MONITOR_H_
#define UI_BASE_X_X11_USER_INPUT_MONITOR_H_
#include <memory>
#include "base/component_export.h"
#include "base/files/file_descriptor_watcher_posix.h"
#include "base/memory/shared_memory_mapping.h"
#include "base/task/current_thread.h"
#include "base/task/single_thread_task_runner.h"
#include "ui/events/keyboard_event_counter.h"
#include "ui/gfx/x/connection.h"
#include "ui/gfx/x/xinput.h"
namespace ui {
// This is the actual implementation of event monitoring. It's separated from
// UserInputMonitorLinux since it needs to be deleted on the IO thread.
class COMPONENT_EXPORT(UI_BASE_X) XUserInputMonitor
: public base::CurrentThread::DestructionObserver,
public x11::EventObserver {
public:
using WriteKeyPressCallback =
base::RepeatingCallback<void(base::WritableSharedMemoryMapping& shmem,
uint32_t count)>;
explicit XUserInputMonitor(
const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner);
XUserInputMonitor(const XUserInputMonitor&) = delete;
XUserInputMonitor& operator=(const XUserInputMonitor&) = delete;
~XUserInputMonitor() override;
uint32_t GetKeyPressCount() const;
void StartMonitor(WriteKeyPressCallback& callback);
void StartMonitorWithMapping(WriteKeyPressCallback& callback,
base::WritableSharedMemoryMapping mapping);
void StopMonitor();
private:
// base::CurrentThread::DestructionObserver:
void WillDestroyCurrentMessageLoop() override;
// x11::EventObserver:
void OnEvent(const x11::Event& event) override;
void OnConnectionData();
scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
// Used for sharing key press count value.
std::unique_ptr<base::WritableSharedMemoryMapping> key_press_count_mapping_;
// The following members should only be accessed on the IO thread.
std::unique_ptr<base::FileDescriptorWatcher::Controller> watch_controller_;
std::unique_ptr<x11::Connection> connection_;
KeyboardEventCounter counter_;
WriteKeyPressCallback write_key_press_callback_;
};
} // namespace ui
#endif // UI_BASE_X_X11_USER_INPUT_MONITOR_H_
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