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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_DATE_VIEW_H_
      6 #define ASH_SYSTEM_DATE_DATE_VIEW_H_
      7 
      8 #include "ash/ash_export.h"
      9 #include "ash/system/date/tray_date.h"
     10 #include "ash/system/tray/actionable_view.h"
     11 #include "base/i18n/time_formatting.h"
     12 #include "base/memory/scoped_ptr.h"
     13 #include "base/timer/timer.h"
     14 #include "ui/views/view.h"
     15 
     16 namespace views {
     17 class Label;
     18 }
     19 
     20 namespace ash {
     21 namespace internal {
     22 namespace tray {
     23 
     24 // Abstract base class containing common updating and layout code for the
     25 // DateView popup and the TimeView tray icon. Exported for tests.
     26 class ASH_EXPORT BaseDateTimeView : public ActionableView {
     27  public:
     28   virtual ~BaseDateTimeView();
     29 
     30   // Updates the displayed text for the current time and calls SetTimer().
     31   void UpdateText();
     32 
     33  protected:
     34   BaseDateTimeView();
     35 
     36  private:
     37   // Starts |timer_| to schedule the next update.
     38   void SetTimer(const base::Time& now);
     39 
     40   // Updates labels to display the current time.
     41   virtual void UpdateTextInternal(const base::Time& now) = 0;
     42 
     43   // Overridden from views::View.
     44   virtual void ChildPreferredSizeChanged(views::View* child) OVERRIDE;
     45   virtual void OnLocaleChanged() OVERRIDE;
     46 
     47   // Invokes UpdateText() when the displayed time should change.
     48   base::OneShotTimer<BaseDateTimeView> timer_;
     49 
     50   DISALLOW_COPY_AND_ASSIGN(BaseDateTimeView);
     51 };
     52 
     53 // Popup view used to display the date and day of week.
     54 class DateView : public BaseDateTimeView {
     55  public:
     56   DateView();
     57   virtual ~DateView();
     58 
     59   // Sets whether the view is actionable. An actionable date view gives visual
     60   // feedback on hover, can be focused by keyboard, and clicking/pressing space
     61   // or enter on the view shows date-related settings.
     62   void SetActionable(bool actionable);
     63 
     64   // Updates the format of the displayed time.
     65   void UpdateTimeFormat();
     66 
     67  private:
     68   // Overridden from BaseDateTimeView.
     69   virtual void UpdateTextInternal(const base::Time& now) OVERRIDE;
     70 
     71   // Overridden from ActionableView.
     72   virtual bool PerformAction(const ui::Event& event) OVERRIDE;
     73 
     74   // Overridden from views::View.
     75   virtual void OnMouseEntered(const ui::MouseEvent& event) OVERRIDE;
     76   virtual void OnMouseExited(const ui::MouseEvent& event) OVERRIDE;
     77 
     78   views::Label* date_label_;
     79 
     80   // Time format (12/24hr) used for accessibility string.
     81   base::HourClockType hour_type_;
     82 
     83   bool actionable_;
     84 
     85   DISALLOW_COPY_AND_ASSIGN(DateView);
     86 };
     87 
     88 // Tray view used to display the current time.
     89 // Exported for tests.
     90 class ASH_EXPORT TimeView : public BaseDateTimeView {
     91  public:
     92   explicit TimeView(TrayDate::ClockLayout clock_layout);
     93   virtual ~TimeView();
     94 
     95   // Updates the format of the displayed time.
     96   void UpdateTimeFormat();
     97 
     98   // Updates clock layout.
     99   void UpdateClockLayout(TrayDate::ClockLayout clock_layout);
    100 
    101  private:
    102   friend class TimeViewTest;
    103 
    104   // Overridden from BaseDateTimeView.
    105   virtual void UpdateTextInternal(const base::Time& now) OVERRIDE;
    106 
    107   // Overridden from ActionableView.
    108   virtual bool PerformAction(const ui::Event& event) OVERRIDE;
    109 
    110   // Overridden from views::View.
    111   virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
    112 
    113   void SetBorder(TrayDate::ClockLayout clock_layout);
    114   void SetupLabels();
    115   void SetupLabel(views::Label* label);
    116 
    117   // Label text used for the normal horizontal shelf.
    118   scoped_ptr<views::Label> horizontal_label_;
    119 
    120   // The time label is split into two lines for the vertical shelf.
    121   scoped_ptr<views::Label> vertical_label_hours_;
    122   scoped_ptr<views::Label> vertical_label_minutes_;
    123 
    124   base::HourClockType hour_type_;
    125 
    126   DISALLOW_COPY_AND_ASSIGN(TimeView);
    127 };
    128 
    129 }  // namespace tray
    130 }  // namespace internal
    131 }  // namespace ash
    132 
    133 #endif  // ASH_SYSTEM_DATE_DATE_VIEW_H_
    134