Route newly created notifications to notification provider API.

chrome/browser/notifications/message_center_notification_manager.cc

 // 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.
 
 #include "chrome/browser/notifications/message_center_notification_manager.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
 #include "base/stl_util.h"
 #include "chrome/browser/chrome_notification_types.h"
+#include "chrome/browser/extensions/api/notification_provider/notification_provider_api.h"
 #include "chrome/browser/notifications/desktop_notification_service.h"
 #include "chrome/browser/notifications/desktop_notification_service_factory.h"
 #include "chrome/browser/notifications/fullscreen_notification_blocker.h"
 #include "chrome/browser/notifications/message_center_settings_controller.h"
 #include "chrome/browser/notifications/notification.h"
+#include "chrome/browser/notifications/notification_conversion_helper.h"
 #include "chrome/browser/notifications/screen_lock_notification_blocker.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/chrome_pages.h"
 #include "chrome/browser/ui/host_desktop.h"
+#include "chrome/common/extensions/api/notification_provider.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/url_constants.h"
+#include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/browser/info_map.h"
 #include "extensions/common/extension_set.h"
+#include "extensions/common/permissions/permissions_data.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/message_center/message_center_style.h"
 #include "ui/message_center/message_center_tray.h"
 #include "ui/message_center/message_center_types.h"
 #include "ui/message_center/notifier_settings.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/notifications/login_state_notification_blocker_chromeos.h"
 #include "chrome/browser/ui/ash/multi_user/multi_user_util.h"
 #endif
@@ skipping 70 matching lines @@
 // NotificationUIManager
 
 void MessageCenterNotificationManager::Add(const Notification& notification,
                                            Profile* profile) {
   if (Update(notification, profile))
     return;
 
   DesktopNotificationServiceFactory::GetForProfile(profile)->
       ShowWelcomeNotificationIfNecessary(notification);
 
-  // WARNING: You MUST use AddProfileNotification or update the message center
-  // via the notification within a ProfileNotification object or the profile ID
-  // will not be correctly set for ChromeOS.
-  AddProfileNotification(
+  // WARNING: You MUST update the message center via the notification within a
+  // ProfileNotification object or the profile ID will not be correctly set for
+  // ChromeOS.
+  ProfileNotification* profile_notification(
       new ProfileNotification(profile, notification, message_center_));
+  AddProfileNotification(profile_notification);
+
+  // TODO(liyanhou): Change the logic to only send notifications to one party.
+  // Currently, if there is an app with notificationProvider permission,
+  // notifications will go to both message center and the app.
+  // Change it to send notifications to message center only when the user chose
+  // default message center (extension_id.empty()).
+
+  // If there exist apps/extensions that have notificationProvider permission,
+  // route notifications to one of the apps/extensions.
+  std::string extension_id = GetExtensionTakingOverNotifications(profile);
+  if (!extension_id.empty()) {

[dewittj, 2014/08/13 18:30:17]

nit: no braces for 1-line if statement

[liyanhou, 2014/08/13 20:28:56]

Done.

+    profile_notification->AddToAlternateProvider(extension_id);
+  }
+
+  message_center_->AddNotification(make_scoped_ptr(
+      new message_center::Notification(profile_notification->notification())));
+  profile_notification->StartDownloads();
 }
 
 bool MessageCenterNotificationManager::Update(const Notification& notification,
                                               Profile* profile) {
   const base::string16& replace_id = notification.replace_id();
   if (replace_id.empty())
     return false;
 
   const GURL origin_url = notification.origin_url();
   DCHECK(origin_url.is_valid());
@@ skipping 13 matching lines @@
           old_notification->notification().delegate_id();
 
       // Add/remove notification in the local list but just update the same
       // one in MessageCenter.
       delete old_notification;
       profile_notifications_.erase(old_id);
       ProfileNotification* new_notification =
           new ProfileNotification(profile, notification, message_center_);
       profile_notifications_[notification.delegate_id()] = new_notification;
 
+      // TODO(liyanhou): Add routing updated notifications to alternative
+      // providers.
+
       // WARNING: You MUST use AddProfileNotification or update the message
       // center via the notification within a ProfileNotification object or the
       // profile ID will not be correctly set for ChromeOS.
       message_center_->UpdateNotification(
           old_id,
           make_scoped_ptr(new message_center::Notification(
               new_notification->notification())));
 
       new_notification->StartDownloads();
       return true;
@@ skipping 302 matching lines @@
   for (extensions::ExtensionSet::const_iterator iter = extensions.begin();
        iter != extensions.end(); ++iter) {
     if (desktop_service->IsNotifierEnabled(message_center::NotifierId(
             message_center::NotifierId::APPLICATION, (*iter)->id()))) {
       return (*iter)->id();
     }
   }
   return std::string();
 }
 
+void
+MessageCenterNotificationManager::ProfileNotification::AddToAlternateProvider(
+    std::string extension_id) {

[dewittj, 2014/08/13 18:30:17]

nit: const ref

[liyanhou, 2014/08/13 20:28:56]

Done.

+  // Convert data from Notification type to NotificationOptions type.
+  scoped_ptr<extensions::api::notifications::NotificationOptions> options(

[dewittj, 2014/08/13 18:30:17]

nit: just stack allocate this.

extensions::api::notifications::NotificationOptions options;
NotificationConversionHelper::NotificationToNotificationOptions(notification_,
&options);

[liyanhou, 2014/08/13 20:28:56]

Done.

+      new extensions::api::notifications::NotificationOptions());
+  NotificationConversionHelper::NotificationToNotificationOptions(
+      notification_, options.get());
+
+  // Send the notification to the alternate provider extension/app.
+  scoped_ptr<extensions::NotificationProviderEventRouter> event_router(
+      new extensions::NotificationProviderEventRouter(profile_));

[dewittj, 2014/08/13 18:30:17]

same, stack allocate this too

[liyanhou, 2014/08/13 20:28:57]

Done.

+  event_router->CreateNotification(extension_id,
+                                   notification_.notifier_id().id,
+                                   notification_.delegate_id(),
+                                   *options);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // private
 
 void MessageCenterNotificationManager::AddProfileNotification(
     ProfileNotification* profile_notification) {
-  const Notification& notification = profile_notification->notification();
-  std::string id = notification.delegate_id();
+  std::string id = profile_notification->notification().delegate_id();
   // Notification ids should be unique.
   DCHECK(profile_notifications_.find(id) == profile_notifications_.end());
   profile_notifications_[id] = profile_notification;
-
-  // Create the copy for message center, and ensure the extension ID is correct.
-  scoped_ptr<message_center::Notification> message_center_notification(
-      new message_center::Notification(notification));
-  message_center_->AddNotification(message_center_notification.Pass());
-
-  profile_notification->StartDownloads();
 }
 
 void MessageCenterNotificationManager::RemoveProfileNotification(
     ProfileNotification* profile_notification) {
   std::string id = profile_notification->notification().delegate_id();
   profile_notifications_.erase(id);
   delete profile_notification;
 }
 
 MessageCenterNotificationManager::ProfileNotification*
     MessageCenterNotificationManager::FindProfileNotification(
         const std::string& id) const {
   NotificationMap::const_iterator iter = profile_notifications_.find(id);
   if (iter == profile_notifications_.end())
     return NULL;
 
   return (*iter).second;
 }
+
+std::string
+MessageCenterNotificationManager::GetExtensionTakingOverNotifications(
+    Profile* profile) {
+  // TODO(liyanhou): When additional settings in Chrome Settings is implemented,
+  // change choosing the last app with permission to a user selected app.
+  extensions::ExtensionRegistry* registry =
+      extensions::ExtensionRegistry::Get(profile);
+  DCHECK(registry);
+  std::string extension_id;
+  for (extensions::ExtensionSet::const_iterator it =

[dewittj, 2014/08/13 18:30:17]

nit: rewrite this loop condition so that it fits on fewer lines.

[liyanhou, 2014/08/13 20:28:57]

Done.

+           registry->enabled_extensions().begin();
+       it != registry->enabled_extensions().end();
+       ++it) {
+    if ((*it->get()).permissions_data()->HasAPIPermission(
+            extensions::APIPermission::ID::kNotificationProvider))
+      extension_id = (*it->get()).id();

[dewittj, 2014/08/13 18:30:17]

nit: return from here so you don't always iterate all the extensions

[liyanhou, 2014/08/13 20:28:57]

Done.

+  }
+  return extension_id;
+}