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/launcher/background_animator.h"
  10 #include "ash/shelf_types.h"
  11 #include "ash/system/user/login_status.h"
  12 #include "ui/views/widget/widget.h"
  13
  14 namespace ash {
  15
  16 class ShellDelegate;
  17 class SystemTray;
  18 class WebNotificationTray;
  19
  20 namespace internal {
  21
  22 class StatusAreaWidgetDelegate;
  23
  24 class ASH_EXPORT StatusAreaWidget : public views::Widget {
  25  public:
  26   explicit StatusAreaWidget(aura::Window* status_container);
  27   virtual ~StatusAreaWidget();
  28
  29   // Creates the SystemTray and the WebNotificationTray.
  30   void CreateTrayViews();
  31
  32   // Destroys the system tray and web notification tray. Called before
  33   // tearing down the windows to avoid shutdown ordering issues.
  34   void Shutdown();
  35
  36   // Update the alignment of the widget and tray views.
  37   void SetShelfAlignment(ShelfAlignment alignment);
  38
  39   // Update whether to paint a background for each tray view.
  40   void SetPaintsBackground(
  41       bool value,
  42       internal::BackgroundAnimator::ChangeType change_type);
  43
  44   // Set the visibility state of web notifications.
  45   void SetHideWebNotifications(bool hide);
  46
  47   // Set the visibility of system notifications.
  48   void SetHideSystemNotifications(bool hide);
  49
  50   // Returns true if it is OK to show a non system notification.
  51   bool ShouldShowWebNotifications();
  52
  53   // Called by the client when the login status changes. Caches login_status
  54   // and calls UpdateAfterLoginStatusChange for the system tray and the web
  55   // notification tray.
  56   void UpdateAfterLoginStatusChange(user::LoginStatus login_status);
  57
  58   internal::StatusAreaWidgetDelegate* status_area_widget_delegate() {
  59     return status_area_widget_delegate_;
  60   }
  61   SystemTray* system_tray() { return system_tray_; }
  62   WebNotificationTray* web_notification_tray() {
  63     return web_notification_tray_;
  64   }
  65
  66   user::LoginStatus login_status() const { return login_status_; }
  67
  68   // Returns true if the launcher should be visible. This is used when the
  69   // launcher is configured to auto-hide and test if the shelf should force
  70   // the launcher to remain visible.
  71   bool ShouldShowLauncher() const;
  72
  73   // True if any message bubble is shown.
  74   bool IsMessageBubbleShown() const;
  75
  76  private:
  77   void AddSystemTray();
  78   void AddWebNotificationTray();
  79
  80   // Weak pointers to View classes that are parented to StatusAreaWidget:
  81   internal::StatusAreaWidgetDelegate* status_area_widget_delegate_;
  82   SystemTray* system_tray_;
  83   WebNotificationTray* web_notification_tray_;
  84   user::LoginStatus login_status_;
  85
  86   DISALLOW_COPY_AND_ASSIGN(StatusAreaWidget);
  87 };
  88
  89 }  // namespace internal
  90 }  // namespace ash
  91
  92 #endif  // ASH_SYSTEM_STATUS_AREA_WIDGET_H_