chromium/ui/views/widget/sublevel_manager.h

// 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 UI_VIEWS_WIDGET_SUBLEVEL_MANAGER_H_
#define UI_VIEWS_WIDGET_SUBLEVEL_MANAGER_H_

#include <vector>

#include "base/memory/raw_ptr.h"
#include "base/scoped_observation.h"
#include "ui/views/views_export.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_observer.h"

namespace views {

// The SublevelManager ensures a widget is shown at the correct sublevel.
// It tracks the sublevel of the owner widget and the stacking state of
// the owner's children widgets.
class VIEWS_EXPORT SublevelManager : public WidgetObserver { … };

}  // namespace views

#endif  // UI_VIEWS_WIDGET_SUBLEVEL_MANAGER_H_