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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef ASH_SYSTEM_TRAY_UPDATE_H_
      6 #define ASH_SYSTEM_TRAY_UPDATE_H_
      7 
      8 #include "ash/system/tray/tray_image_item.h"
      9 #include "ash/system/user/update_observer.h"
     10 #include "base/memory/scoped_ptr.h"
     11 
     12 namespace views {
     13 class View;
     14 }
     15 
     16 namespace ash {
     17 
     18 namespace tray {
     19 class UpdateNagger;
     20 }
     21 
     22 class TrayUpdate : public TrayImageItem,
     23                    public UpdateObserver {
     24  public:
     25   explicit TrayUpdate(SystemTray* system_tray);
     26   virtual ~TrayUpdate();
     27 
     28  private:
     29   // Overridden from TrayImageItem.
     30   virtual bool GetInitialVisibility() OVERRIDE;
     31   virtual views::View* CreateDefaultView(user::LoginStatus status) OVERRIDE;
     32   virtual views::View* CreateDetailedView(user::LoginStatus status) OVERRIDE;
     33   virtual void DestroyDetailedView() OVERRIDE;
     34 
     35   // Overridden from UpdateObserver.
     36   virtual void OnUpdateRecommended(UpdateSeverity severity) OVERRIDE;
     37 
     38   // Used to nag the user in case the tray has been hidden too long with an
     39   // unseen update notification.
     40   scoped_ptr<tray::UpdateNagger> nagger_;
     41 
     42   UpdateObserver::UpdateSeverity severity_;
     43 
     44   DISALLOW_COPY_AND_ASSIGN(TrayUpdate);
     45 };
     46 
     47 }  // namespace ash
     48 
     49 #endif  // ASH_SYSTEM_TRAY_UPDATE_H_
     50