Listen for APP_TERMINATING in notification ui; close windows earlier in the p...

chrome/browser/notifications/notification_ui_manager.h

 // Copyright (c) 2009 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 CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_UI_MANAGER_H_
 #define CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_UI_MANAGER_H_
 #pragma once
 
 #include <deque>
 #include <string>
 
 #include "base/id_map.h"
 #include "base/scoped_ptr.h"
 #include "chrome/browser/notifications/balloon.h"
 #include "chrome/browser/notifications/balloon_collection.h"
+#include "chrome/common/notification_observer.h"
+#include "chrome/common/notification_registrar.h"
 
 class Notification;
 class Profile;
 class QueuedNotification;
 class SiteInstance;
 
 // The notification manager manages use of the desktop for notifications.
 // It maintains a queue of pending notifications when space becomes constrained.
 class NotificationUIManager
-    : public BalloonCollection::BalloonSpaceChangeListener {
+    : public BalloonCollection::BalloonSpaceChangeListener,
+      public NotificationObserver {
  public:
   NotificationUIManager();
   virtual ~NotificationUIManager();
 
   // Creates an initialized UI manager with a new balloon collection
   // and the listener relationship setup.
   // Except for unit tests, this is the way to construct the object.
   static NotificationUIManager* Create();
 
   // Initializes the UI manager with a balloon collection; this object
@@ skipping 10 matching lines @@
 
   // Removes any notifications matching the supplied ID, either currently
   // displayed or in the queue.  Returns true if anything was removed.
   virtual bool CancelById(const std::string& notification_id);
 
   // Removes any notifications matching the supplied source origin
   // (which could be an extension ID), either currently displayed or in the
   // queue.  Returns true if anything was removed.
   virtual bool CancelAllBySourceOrigin(const GURL& source_origin);
 
+  // Cancels all pending notifications and closes anything currently showing.
+  // Used when the app is terminating.
+  void CancelAll();
+
   // Returns balloon collection.
   BalloonCollection* balloon_collection() {
     return balloon_collection_.get();
   }
 
+  // NotificationObserver interface (the event signaling kind of notifications)
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+
  private:
   // Attempts to display notifications from the show_queue if the user
   // is active.
   void CheckAndShowNotifications();
 
   // Attempts to display notifications from the show_queue.
   void ShowNotifications();
 
   // BalloonCollectionObserver implementation.
   virtual void OnBalloonSpaceChanged();
 
   // Replace an existing notification with this one if applicable;
   // returns true if the replacement happened.
   bool TryReplacement(const Notification& notification);
 
   // An owned pointer to the collection of active balloons.
   scoped_ptr<BalloonCollection> balloon_collection_;
 
   // A queue of notifications which are waiting to be shown.
   typedef std::deque<QueuedNotification*> NotificationDeque;
   NotificationDeque show_queue_;
 
+  // Registrar for the other kind of notifications (event signaling).
+  NotificationRegistrar registrar_;
+
   DISALLOW_COPY_AND_ASSIGN(NotificationUIManager);
 };
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_UI_MANAGER_H_