Made notification center notifications collapsed and expandable.

ui/message_center/message_center.h

Index: ui/message_center/message_center.h
diff --git a/ui/message_center/message_center.h b/ui/message_center/message_center.h
index 7cc49daa96344396bfcc59e742d36e94dcb0d252..e6ce7bb695aecc01ea21c55d04330132fed667ed 100644
--- a/ui/message_center/message_center.h
+++ b/ui/message_center/message_center.h
@@ -11,6 +11,7 @@
 #include "base/observer_list.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/message_center/message_center_export.h"
+#include "ui/message_center/notification_change_delegate.h"
 #include "ui/message_center/notification_list.h"
 #include "ui/message_center/notification_types.h"
 
@@ -28,7 +29,8 @@ class DictionaryValue;
 
 namespace message_center {
 
-class MESSAGE_CENTER_EXPORT MessageCenter : public NotificationList::Delegate {
+class MESSAGE_CENTER_EXPORT MessageCenter : public NotificationChangeDelegate,
+                                            public NotificationList::Delegate {
  public:
   // Class that hosts the message center.
   class MESSAGE_CENTER_EXPORT Observer {
@@ -42,6 +44,8 @@ class MESSAGE_CENTER_EXPORT MessageCenter : public NotificationList::Delegate {
 
   class MESSAGE_CENTER_EXPORT Delegate {
    public:
+    virtual ~Delegate();
+
     // Called when the notification associated with |notification_id| is
     // removed (i.e. closed by the user).
     virtual void NotificationRemoved(const std::string& notification_id,
@@ -72,10 +76,7 @@ class MESSAGE_CENTER_EXPORT MessageCenter : public NotificationList::Delegate {
     // TODO(miket): consider providing default implementations for the pure
     // virtuals above, to avoid changing so many files in disparate parts of
     // the codebase each time we enhance this interface.
-    virtual void OnButtonClicked(const std::string& id, int button_index);
-
-   protected:
-    virtual ~Delegate() {}
+    virtual void OnButtonClicked(const std::string& id, int button_index) = 0;
   };
 
   MessageCenter();
@@ -139,19 +140,23 @@ class MESSAGE_CENTER_EXPORT MessageCenter : public NotificationList::Delegate {
   NotificationList* notification_list() { return notification_list_.get(); }
   bool quiet_mode() const { return notification_list_->quiet_mode(); }
 
-  // Overridden from NotificationList::Delegate.
-  virtual void SendRemoveNotification(const std::string& id,
-                                      bool by_user) OVERRIDE;
-  virtual void SendRemoveAllNotifications(bool by_user) OVERRIDE;
-  virtual void DisableNotificationByExtension(const std::string& id) OVERRIDE;
-  virtual void DisableNotificationByUrl(const std::string& id) OVERRIDE;
+  // Overridden from NotificationChangeDelegate:
+  virtual void RemoveNotification(const std::string& id, bool by_user) OVERRIDE;
+  virtual void RemoveAllNotifications(bool by_user) OVERRIDE;
+  virtual void DisableNotificationsByExtension(const std::string& id) OVERRIDE;
+  virtual void DisableNotificationsByUrl(const std::string& id) OVERRIDE;
   virtual void ShowNotificationSettings(const std::string& id) OVERRIDE;
   virtual void ShowNotificationSettingsDialog(gfx::NativeView context) OVERRIDE;
-  virtual void OnNotificationClicked(const std::string& id) OVERRIDE;
-  virtual void OnQuietModeChanged(bool quiet_mode) OVERRIDE;
+  virtual void OnExpanded(const std::string& id) OVERRIDE;
+  virtual void OnClicked(const std::string& id) OVERRIDE;
   virtual void OnButtonClicked(const std::string& id, int button_index)
       OVERRIDE;
-  virtual NotificationList* GetNotificationList() OVERRIDE;
+
+  // Overridden from NotificationList::Delegate:
+  virtual void NotificationWasRemoved(const std::string& id,
+                                      bool by_user) OVERRIDE;
+  virtual void AllNotificationsWereRemoved(bool by_user) OVERRIDE;

[dharcourt, 2013/03/04 21:17:52]

It turned out no one was using this so I pruned it.

+  virtual void OnQuietModeChanged(bool quiet_mode) OVERRIDE;
 
  private:
   // Calls OnMessageCenterChanged on each observer.