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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_SYSTEM_INPUT_DEVICE_SETTINGS_INPUT_DEVICE_TRACKER_H_
#define ASH_SYSTEM_INPUT_DEVICE_SETTINGS_INPUT_DEVICE_TRACKER_H_
#include <memory>
#include <string_view>
#include "ash/ash_export.h"
#include "ash/public/cpp/input_device_settings_controller.h"
#include "ash/public/cpp/session/session_observer.h"
#include "ash/public/mojom/input_device_settings.mojom-forward.h"
#include "components/prefs/pref_member.h"
class PrefService;
class PrefRegistrySimple;
namespace ash {
// Store observed connected input devices in prefs to be used during the
// transition period from global settings to per-device input settings.
// TODO(dpad@): Remove once transitioned to per-device settings.
class ASH_EXPORT InputDeviceTracker
: public InputDeviceSettingsController::Observer,
public SessionObserver {
public:
// Used to denote the category of a given input device.
enum class InputDeviceCategory {
kMouse,
kTouchpad,
kPointingStick,
kKeyboard,
};
InputDeviceTracker();
InputDeviceTracker(const InputDeviceTracker&) = delete;
InputDeviceTracker& operator=(const InputDeviceTracker&) = delete;
~InputDeviceTracker() override;
static void RegisterProfilePrefs(PrefRegistrySimple* pref_registry);
// InputDeviceSettingsController::Observer:
void OnKeyboardConnected(const mojom::Keyboard& keyboard) override;
void OnTouchpadConnected(const mojom::Touchpad& touchpad) override;
void OnMouseConnected(const mojom::Mouse& mouse) override;
void OnPointingStickConnected(
const mojom::PointingStick& pointing_stick) override;
// SessionObserver:
void OnActiveUserPrefServiceChanged(PrefService* pref_service) override;
bool WasDevicePreviouslyConnected(InputDeviceCategory category,
std::string_view device_key) const;
private:
void Init(PrefService* pref_service);
void RecordDeviceConnected(InputDeviceCategory category,
std::string_view device_key);
void ResetPrefMembers();
void RecordConnectedDevices();
StringListPrefMember* GetObservedDevicesForCategory(
InputDeviceCategory category) const;
bool HasSeenPrimaryDeviceKeyAlias(
const std::vector<std::string>& previously_observed_devices,
std::string_view device_key);
std::unique_ptr<StringListPrefMember> keyboard_observed_devices_;
std::unique_ptr<StringListPrefMember> mouse_observed_devices_;
std::unique_ptr<StringListPrefMember> touchpad_observed_devices_;
std::unique_ptr<StringListPrefMember> pointing_stick_observed_devices_;
};
} // namespace ash
#endif // ASH_SYSTEM_INPUT_DEVICE_SETTINGS_INPUT_DEVICE_TRACKER_H_
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