chromium/ui/ozone/platform/wayland/host/wayland_serial_tracker.h

// Copyright 2021 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_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_SERIAL_TRACKER_H_
#define UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_SERIAL_TRACKER_H_

#include <cstdint>
#include <optional>
#include <vector>

#include "base/containers/fixed_flat_map.h"
#include "base/time/time.h"

namespace wl {

// Utility classes that help on tracking and retrieving "serial" values and
// meta-data, received through Wayland protocol events. Each serial value is
// associated with an event type, which is represented by a SerialType enum
// entry.
//
// Note: SerialTracker must not be used to track related input object states,
// e.g: whether a pointer button is pressed, or whether there are active touch
// points. Instead, other specific APIs should be added/used for that.

enum class SerialType { … };

struct Serial { … };

class SerialTracker final { … };

}  // namespace wl

#endif  // UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_SERIAL_TRACKER_H_