ash/ime/mode_indicator_observer.h

// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef ASH_IME_MODE_INDICATOR_OBSERVER_H_
#define ASH_IME_MODE_INDICATOR_OBSERVER_H_

#include "base/macros.h"
#include "ui/views/widget/widget_observer.h"

namespace ash {

// The observer for the mode indicator widget so that the widget can be
// closed immediately when a new mode indicator view tries to show before
// the fade out animation completes.
class ModeIndicatorObserver : public views::WidgetObserver {
 public:
  ModeIndicatorObserver();
  ~ModeIndicatorObserver() override;

  void AddModeIndicatorWidget(views::Widget* widget);

  // Exposes the active widget for testability.
  views::Widget* active_widget() const { return active_widget_; }

  // views::WidgetObserver override:
  void OnWidgetDestroying(views::Widget* widget) override;

 private:
  views::Widget* active_widget_;

  DISALLOW_COPY_AND_ASSIGN(ModeIndicatorObserver);
};

}  // namespace ash

#endif  // ASH_IME_MODE_INDICATOR_OBSERVER_H_