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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_DATE_TRAY_DATE_H_
      6 #define ASH_SYSTEM_DATE_TRAY_DATE_H_
      7 
      8 #include "ash/ash_export.h"
      9 #include "ash/system/date/clock_observer.h"
     10 #include "ash/system/tray/system_tray_item.h"
     11 #include "base/memory/scoped_ptr.h"
     12 
     13 namespace views {
     14 class Label;
     15 }
     16 
     17 namespace ash {
     18 class DateDefaultView;
     19 #if defined(OS_CHROMEOS)
     20 class SystemClockObserver;
     21 #endif
     22 
     23 namespace tray {
     24 class TimeView;
     25 }
     26 
     27 class ASH_EXPORT TrayDate : public SystemTrayItem, public ClockObserver {
     28  public:
     29   enum ClockLayout {
     30     HORIZONTAL_CLOCK,
     31     VERTICAL_CLOCK,
     32   };
     33 
     34   enum DateAction {
     35     NONE,
     36     SET_SYSTEM_TIME,
     37     SHOW_DATE_SETTINGS,
     38   };
     39 
     40   explicit TrayDate(SystemTray* system_tray);
     41   virtual ~TrayDate();
     42 
     43   // Returns view for help button if it is exists. Returns NULL otherwise.
     44   views::View* GetHelpButtonView() const;
     45 
     46   const tray::TimeView* GetTimeTrayForTesting() const;
     47   const DateDefaultView* GetDefaultViewForTesting() const;
     48   views::View* CreateDefaultViewForTesting(user::LoginStatus status);
     49 
     50  private:
     51   // Overridden from SystemTrayItem.
     52   virtual views::View* CreateTrayView(user::LoginStatus status) OVERRIDE;
     53   virtual views::View* CreateDefaultView(user::LoginStatus status) OVERRIDE;
     54   virtual views::View* CreateDetailedView(user::LoginStatus status) OVERRIDE;
     55   virtual void DestroyTrayView() OVERRIDE;
     56   virtual void DestroyDefaultView() OVERRIDE;
     57   virtual void DestroyDetailedView() OVERRIDE;
     58   virtual void UpdateAfterLoginStatusChange(user::LoginStatus status) OVERRIDE;
     59   virtual void UpdateAfterShelfAlignmentChange(
     60       ShelfAlignment alignment) OVERRIDE;
     61 
     62   // Overridden from ClockObserver.
     63   virtual void OnDateFormatChanged() OVERRIDE;
     64   virtual void OnSystemClockTimeUpdated() OVERRIDE;
     65   virtual void OnSystemClockCanSetTimeChanged(bool can_set_time) OVERRIDE;
     66   virtual void Refresh() OVERRIDE;
     67 
     68   void SetupLabelForTimeTray(views::Label* label);
     69 
     70   tray::TimeView* time_tray_;
     71   DateDefaultView* default_view_;
     72   user::LoginStatus login_status_;
     73 
     74 #if defined(OS_CHROMEOS)
     75   scoped_ptr<SystemClockObserver> system_clock_observer_;
     76 #endif
     77 
     78   DISALLOW_COPY_AND_ASSIGN(TrayDate);
     79 };
     80 
     81 }  // namespace ash
     82 
     83 #endif  // ASH_SYSTEM_DATE_TRAY_DATE_H_
     84