Made notification center notifications collapsed and expandable.

ui/message_center/notification_list.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 UI_MESSAGE_CENTER_NOTIFICATION_LIST_H_
 #define UI_MESSAGE_CENTER_NOTIFICATION_LIST_H_
 
 #include <set>
 #include <string>
 
@@ skipping 48 matching lines @@
 
     // Requests the Delegate to show the settings page.
     virtual void ShowNotificationSettings(const std::string& id) = 0;
 
     // Requests the Delegate to show the settings dialog.
     virtual void ShowNotificationSettingsDialog(gfx::NativeView context) = 0;
 
     // Called when a notification is clicked on.
     virtual void OnNotificationClicked(const std::string& id) = 0;
 
-    // Called when the quiet mode status has been changed.
-    virtual void OnQuietModeChanged(bool quiet_mode) = 0;
-
     // Called when a button in a notification is clicked. |button_index|
     // indicates which button was clicked, zero-indexed (button one is 0,
     // button two is 1).
     virtual void OnButtonClicked(const std::string& id, int button_index) = 0;
 
-    // Returns the list of notifications to display.
-    virtual NotificationList* GetNotificationList() = 0;
+    // Called when a notification has been expanded in the notification center.
+    virtual void OnExpand(const std::string& id) = 0;
+
+    // Called when the quiet mode status has been changed.
+    virtual void OnQuietModeChanged(bool quiet_mode) = 0;

[dharcourt, 2013/03/01 10:17:31]

GetNotificationList() was removed because it caused too much coupling between
MessageCenter's NotificationList and objects that had a
NotificationList::Delegate.

As it turns out all objects calling GetNotificationList() were directly coupled
to the MessageCenter so it was easy to modify them to call MessageCenter's
notification_list() accessor directly instead of calling GetNotificationList().
GetNotificationList() could therefor be removed.

   };
 
   explicit NotificationList(Delegate* delegate);
   virtual ~NotificationList();
 
   // Affects whether or not a message has been "read".
   void SetMessageCenterVisible(bool visible);
 
   void AddNotification(NotificationType type,
                        const std::string& id,
@@ skipping 43 matching lines @@
   PopupNotifications GetPopupNotifications();
 
   // Marks the popups for the |priority| as shown.
   void MarkPopupsAsShown(int priority);
 
   // Marks a specific popup item as shown. Set |mark_notification_as_read| to
   // true in case marking the notification as read too.
   void MarkSinglePopupAsShown(const std::string& id,
                               bool mark_notification_as_read);
 
+  // Marks the specified notification as expanded in the notification center.
+  void MarkNotificationAsExpanded(const std::string& id);
+
   bool quiet_mode() const { return quiet_mode_; }
 
   // Sets the current quiet mode status to |quiet_mode|. The new status is not
   // expired.
   void SetQuietMode(bool quiet_mode);
 
   // Sets the current quiet mode to true. The quiet mode will expire in the
   // specified time-delta from now.
   void EnterQuietModeWithExpire(const base::TimeDelta& expires_in);
 
@@ skipping 23 matching lines @@
   size_t unread_count_;
   bool quiet_mode_;
   scoped_ptr<base::OneShotTimer<NotificationList> > quiet_mode_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(NotificationList);
 };
 
 }  // namespace message_center
 
 #endif // UI_MESSAGE_CENTER_NOTIFICATION_LIST_H_