chromium/ui/base/scoped_visibility_tracker.h

// Copyright 2017 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_SCOPED_VISIBILITY_TRACKER_H_
#define UI_BASE_SCOPED_VISIBILITY_TRACKER_H_

#include "base/component_export.h"
#include "base/memory/raw_ptr.h"
#include "base/time/time.h"

namespace base {
class TickClock;
}  // namespace base

namespace ui {

// This class tracks the total time it is visible, based on receiving
// OnShown/OnHidden notifications, which are logically idempotent.
class COMPONENT_EXPORT(UI_BASE) ScopedVisibilityTracker { … };

}  // namespace ui

#endif  // UI_BASE_SCOPED_VISIBILITY_TRACKER_H_