Implement cancel() API on a Notification object so that script can cancel or ...

chrome/browser/notifications/notification_ui_manager.cc

 // 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.
 
 #include "chrome/browser/notifications/notification_ui_manager.h"
 
 #include "base/logging.h"
 #include "base/scoped_ptr.h"
 #include "base/stl_util-inl.h"
 #include "chrome/browser/notifications/balloon_collection.h"
@@ skipping 40 matching lines @@
 
 void NotificationUIManager::Add(const Notification& notification,
                                 Profile* profile) {
   LOG(INFO) << "Added notification. URL: "
             << notification.content_url().spec().c_str();
   show_queue_.push_back(
       new QueuedNotification(notification, profile));
   CheckAndShowNotifications();
 }
 
+bool NotificationUIManager::Cancel(const Notification& notification) {
+  // First look through the notifications that haven't been shown.
+  NotificationDeque::iterator iter;
+  for (iter = show_queue_.begin(); iter != show_queue_.end(); ++iter) {
+    if (notification.IsSame((*iter)->notification())) {
+      show_queue_.erase(iter);
+      return true;
+    }
+  }
+  return balloon_collection_->Remove(notification);
+}
+
 void NotificationUIManager::CheckAndShowNotifications() {
   // TODO(johnnyg): http://crbug.com/25061 - Check for user idle/presentation.
   ShowNotifications();
 }
 
 void NotificationUIManager::ShowNotifications() {
   while (!show_queue_.empty() && balloon_collection_->HasSpace()) {
     scoped_ptr<QueuedNotification> queued_notification(show_queue_.front());
     show_queue_.pop_front();
     balloon_collection_->Add(queued_notification->notification(),
                              queued_notification->profile());
   }
 }
 
 void NotificationUIManager::OnBalloonSpaceChanged() {
   CheckAndShowNotifications();
 }