text: // Copyright 2016 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_SYSTEM_TILES_TILES_DEFAULT_VIEW_H_
  #define ASH_SYSTEM_TILES_TILES_DEFAULT_VIEW_H_
  
  #include "ash/ash_export.h"
  #include "base/macros.h"
  #include "ui/views/controls/button/button.h"
  #include "ui/views/view.h"
  
  namespace views {
  class CustomButton;
  }
  
  namespace ash {
  class NightLightToggleButton;
  class SystemTrayItem;
  
  // The container view for the tiles in the bottom row of the system menu
  // (settings, help, lock, and power).
  class ASH_EXPORT TilesDefaultView : public views::View,
                                      public views::ButtonListener {
   public:
    explicit TilesDefaultView(SystemTrayItem* owner);
    ~TilesDefaultView() override;
  
    // Sets the layout manager and child views of |this|.
    // TODO(tdanderson|bruthig): Consider moving the layout manager
    // setup code to a location which can be shared by other system menu rows.
    void Init();
  
    // views::ButtonListener:
    void ButtonPressed(views::Button* sender, const ui::Event& event) override;
  
    // Accessor needed to obtain the help button view for the first-run flow.
    views::View* GetHelpButtonView() const;
  
    const views::CustomButton* GetShutdownButtonViewForTest() const;
  
   private:
    friend class TrayTilesTest;
  
    SystemTrayItem* owner_;
  
    // Pointers to the child buttons of |this|. Note that some buttons may not
    // exist (depending on the user's current login status, for instance), in
    // which case the corresponding pointer will be null.
    views::CustomButton* settings_button_;
    views::CustomButton* help_button_;
    NightLightToggleButton* night_light_button_;
    views::CustomButton* lock_button_;
    views::CustomButton* power_button_;
  
    DISALLOW_COPY_AND_ASSIGN(TilesDefaultView);
  };
  
  }  // namespace ash
  
  #endif  // ASH_SYSTEM_TILES_TILES_DEFAULT_VIEW_H_
  