Move ash/system/web_notification message_center to ui/

ash/system/web_notification/message_center.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_WEB_NOTIFICATION_MESSAGE_CENTER_H_
-#define ASH_SYSTEM_WEB_NOTIFICATION_MESSAGE_CENTER_H_
-
-#include "ash/ash_export.h"
-#include "ash/system/web_notification/web_notification_list.h"
-#include "base/memory/scoped_ptr.h"
-
-// Class for managing the WebNotificationList. The client (e.g. Chrome) calls
-// [Add|Remove|Update]Notification to create and update notifications in the
-// list. It can also implement Delegate to receive callbacks when a
-// notification is removed (closed), or clicked on.
-// If a Host is provided, it will be informed when the notification list
-// changes, and is expected to handle creating, showing, and hiding of any
-// bubbles.
-
-namespace message_center {
-
-class ASH_EXPORT MessageCenter : public WebNotificationList::Delegate {
- public:
-  // Class that hosts the message center.
-  class ASH_EXPORT Host {
-   public:
-    // Called when the notification list has changed. |new_notification| will
-    // be true if a notification was added or updated.
-    virtual void MessageCenterChanged(bool new_notification) = 0;
-
-   protected:
-    virtual ~Host() {}
-  };
-
-  class ASH_EXPORT Delegate {
-   public:
-    // Called when the notification associated with |notification_id| is
-    // removed (i.e. closed by the user).
-    virtual void NotificationRemoved(const std::string& notifcation_id) = 0;
-
-    // Request to disable the extension associated with |notification_id|.
-    virtual void DisableExtension(const std::string& notifcation_id) = 0;
-
-    // Request to disable notifications from the source of |notification_id|.
-    virtual void DisableNotificationsFromSource(
-        const std::string& notifcation_id) = 0;
-
-    // Request to show the notification settings (|notification_id| is used
-    // to identify the requesting browser context).
-    virtual void ShowSettings(const std::string& notifcation_id) = 0;
-
-    // Called when the notification body is clicked on.
-    virtual void OnClicked(const std::string& notifcation_id) = 0;
-
-   protected:
-    virtual ~Delegate() {}
-  };
-
-  // |host| is expected to manage any notification bubbles. It may be NULL.
-  explicit MessageCenter(Host* host);
-
-  virtual ~MessageCenter();
-
-  // Called once to set the delegate.
-  void SetDelegate(Delegate* delegate);
-
-  // Informs the notification list whether the message center is visible.
-  // This affects whether or not a message has been "read".
-  void SetMessageCenterVisible(bool visible);
-
-  // Accessors to notification_list_
-  size_t NotificationCount() const;
-  size_t UnreadNotificationCount() const;
-  bool HasPopupNotifications() const;
-
-  // Adds a new notification. |id| is a unique identifier, used to update or
-  // remove notifications. |title| and |meesage| describe the notification text.
-  // Use SetNotificationImage to set the icon image. If |extension_id| is
-  // provided then 'Disable extension' will appear in a dropdown menu and the
-  // id will be used to disable notifications from the extension. Otherwise if
-  // |display_source| is provided, a menu item showing the source and allowing
-  // notifications from that source to be disabled will be shown. All actual
-  // disabling is handled by the Delegate.
-  void AddNotification(const std::string& id,
-                       const string16& title,
-                       const string16& message,
-                       const string16& display_source,
-                       const std::string& extension_id);
-
-  // Updates an existing notification with id = old_id and set its id to new_id.
-  void UpdateNotification(const std::string& old_id,
-                          const std::string& new_id,
-                          const string16& title,
-                          const string16& message);
-
-  // Removes an existing notification.
-  void RemoveNotification(const std::string& id);
-
-  // Sets the notification image.
-  void SetNotificationImage(const std::string& id,
-                            const gfx::ImageSkia& image);
-
-  WebNotificationList* notification_list() { return notification_list_.get(); }
-
-  // Overridden from WebNotificationList::Delegate.
-  virtual void SendRemoveNotification(const std::string& id) OVERRIDE;
-  virtual void SendRemoveAllNotifications() OVERRIDE;
-  virtual void DisableNotificationByExtension(const std::string& id) OVERRIDE;
-  virtual void DisableNotificationByUrl(const std::string& id) OVERRIDE;
-  virtual void ShowNotificationSettings(const std::string& id) OVERRIDE;
-  virtual void OnNotificationClicked(const std::string& id) OVERRIDE;
-  virtual message_center::WebNotificationList* GetNotificationList() OVERRIDE;
-
- private:
-  scoped_ptr<WebNotificationList> notification_list_;
-  Host* host_;
-  Delegate* delegate_;
-
-  DISALLOW_COPY_AND_ASSIGN(MessageCenter);
-};
-
-}  // namespace message_center
-
-#endif  // ASH_SYSTEM_WEB_NOTIFICATION_MESSAGE_CENTER_H_