Add WebNotificationTray

ash/system/status_area_widget.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ASH_SYSTEM_STATUS_AREA_WIDGET_H_
 #define ASH_SYSTEM_STATUS_AREA_WIDGET_H_
 #pragma once
 
 #include "ash/ash_export.h"
 #include "ash/wm/shelf_auto_hide_behavior.h"
 #include "ui/views/widget/widget.h"
 
 namespace ash {
+
+class ShellDelegate;
+class SystemTray;
+class SystemTrayDelegate;
+class WebNotificationTray;
+
 namespace internal {
 
 class StatusAreaWidgetDelegate;
 
 class ASH_EXPORT StatusAreaWidget : public views::Widget {
- public:
+public:
+  enum UserAction {
+    NON_USER_ACTION,
+    USER_ACTION
+  };
+
   StatusAreaWidget();
   virtual ~StatusAreaWidget();
 
-  void AddTray(views::View* tray);
+  // Creates a SystemTray and a WebNotificationTray.
+  void CreateTrayViews(ShellDelegate* shell_delegate);
+
+  // Destroys the system tray and web notification tray. Called before
+  // tearing down the windows to avoid shutdown problems.
+  void Shutdown();
+
+  void AddSystemTray(SystemTray* system_tray, ShellDelegate* shell_delegate);
+  void AddWebNotificationTray(WebNotificationTray* web_notification_tray);
   void SetShelfAlignment(ShelfAlignment alignment);
 
+  // Always used to show/hide the web notification tray. These handle any logic
+  // with hiding/supressing notifications from the system tray.
+  void ShowWebNotificationBubble(UserAction user_action);
+  void HideWebNotificationBubble();
+
+  SystemTray* system_tray() { return system_tray_; }
+  SystemTrayDelegate* system_tray_delegate() {
+    return system_tray_delegate_.get();
+  }
+  WebNotificationTray* web_notification_tray() {
+    return web_notification_tray_;
+  }
+
  private:
   internal::StatusAreaWidgetDelegate* widget_delegate_;
+  scoped_ptr<SystemTrayDelegate> system_tray_delegate_;
+  // Child views owned by the view hierarchy:
+  SystemTray* system_tray_;
+  WebNotificationTray* web_notification_tray_;
 
   DISALLOW_COPY_AND_ASSIGN(StatusAreaWidget);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_STATUS_AREA_WIDGET_H_