ash/system/status_area_widget.h

   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_STATUS_AREA_WIDGET_H_
   6 #define ASH_SYSTEM_STATUS_AREA_WIDGET_H_
   7
   8 #include "ash/ash_export.h"
   9 #include "ash/shelf/shelf_types.h"
  10 #include "ash/system/user/login_status.h"
  11 #include "ui/views/widget/widget.h"
  12
  13 namespace ash {
  14 class OverviewButtonTray;
  15 class ShellDelegate;
  16 class StatusAreaWidgetDelegate;
  17 class SystemTray;
  18 class WebNotificationTray;
  19 #if defined(OS_CHROMEOS)
  20 class LogoutButtonTray;
  21 class VirtualKeyboardTray;
  22 #endif
  23
  24 class ASH_EXPORT StatusAreaWidget : public views::Widget {
  25  public:
  26   static const char kNativeViewName[];
  27
  28   explicit StatusAreaWidget(aura::Window* status_container);
  29   virtual ~StatusAreaWidget();
  30
  31   // Creates the SystemTray, WebNotificationTray and LogoutButtonTray.
  32   void CreateTrayViews();
  33
  34   // Destroys the system tray and web notification tray. Called before
  35   // tearing down the windows to avoid shutdown ordering issues.
  36   void Shutdown();
  37
  38   // Update the alignment of the widget and tray views.
  39   void SetShelfAlignment(ShelfAlignment alignment);
  40
  41   // Set the visibility of system notifications.
  42   void SetHideSystemNotifications(bool hide);
  43
  44   // Called by the client when the login status changes. Caches login_status
  45   // and calls UpdateAfterLoginStatusChange for the system tray and the web
  46   // notification tray.
  47   void UpdateAfterLoginStatusChange(user::LoginStatus login_status);
  48
  49   StatusAreaWidgetDelegate* status_area_widget_delegate() {
  50     return status_area_widget_delegate_;
  51   }
  52   SystemTray* system_tray() { return system_tray_; }
  53   WebNotificationTray* web_notification_tray() {
  54     return web_notification_tray_;
  55   }
  56   OverviewButtonTray* overview_button_tray() {
  57     return overview_button_tray_;
  58   }
  59
  60   user::LoginStatus login_status() const { return login_status_; }
  61
  62   // Returns true if the shelf should be visible. This is used when the
  63   // shelf is configured to auto-hide and test if the shelf should force
  64   // the shelf to remain visible.
  65   bool ShouldShowShelf() const;
  66
  67   // True if any message bubble is shown.
  68   bool IsMessageBubbleShown() const;
  69
  70   // Notifies child trays, and the |status_area_widget_delegate_| to schedule a
  71   // paint.
  72   void SchedulePaint();
  73
  74   // Overridden from views::Widget:
  75   virtual void OnNativeWidgetActivationChanged(bool active) OVERRIDE;
  76
  77  private:
  78   void AddSystemTray();
  79   void AddWebNotificationTray();
  80 #if defined(OS_CHROMEOS)
  81   void AddLogoutButtonTray();
  82   void AddVirtualKeyboardTray();
  83 #endif
  84   void AddOverviewButtonTray();
  85
  86   // Weak pointers to View classes that are parented to StatusAreaWidget:
  87   StatusAreaWidgetDelegate* status_area_widget_delegate_;
  88   OverviewButtonTray* overview_button_tray_;
  89   SystemTray* system_tray_;
  90   WebNotificationTray* web_notification_tray_;
  91 #if defined(OS_CHROMEOS)
  92   LogoutButtonTray* logout_button_tray_;
  93   VirtualKeyboardTray* virtual_keyboard_tray_;
  94 #endif
  95   user::LoginStatus login_status_;
  96
  97   DISALLOW_COPY_AND_ASSIGN(StatusAreaWidget);
  98 };
  99
 100 }  // namespace ash
 101
 102 #endif  // ASH_SYSTEM_STATUS_AREA_WIDGET_H_