Route newly created notifications to notification provider API.

chrome/browser/notifications/message_center_notification_manager.cc

Index: chrome/browser/notifications/message_center_notification_manager.cc
diff --git a/chrome/browser/notifications/message_center_notification_manager.cc b/chrome/browser/notifications/message_center_notification_manager.cc
index 8afa5a1714d82d9df32ebe9b709082e145d3dd02..8580abf0e994092927ed9c2a6ef63022314af79f 100644
--- a/chrome/browser/notifications/message_center_notification_manager.cc
+++ b/chrome/browser/notifications/message_center_notification_manager.cc
@@ -10,23 +10,28 @@
 #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"
@@ -122,6 +127,17 @@ void MessageCenterNotificationManager::Add(const Notification& notification,
   // will not be correctly set for ChromeOS.
   AddProfileNotification(
       new ProfileNotification(profile, notification, message_center_));
+
+  // TODO(liyanhou): Change the logic to only send notifications to one party.
+  // Currently, if there are apps with notificationProvider permission,
+  // notifications will go to both Chrome Notification Center and an app.
+
+  // If there exists apps/extensions that have notificationProvider permission,
+  // reroute notifications to one of the apps/extensions.
+  std::string extension_id = GetExtensionTakingOverNotifications(profile);
+  if (!extension_id.empty()) {
+    RouteNotificationToAlternateProvider(notification, profile, extension_id);
+  }

[dewittj, 2014/08/09 00:29:52]

Do you want to modify the Update function too?

[liyanhou, 2014/08/11 17:21:09]

Yes. I was going it in the next CL.

 }
 
 bool MessageCenterNotificationManager::Update(const Notification& notification,
@@ -512,3 +528,43 @@ MessageCenterNotificationManager::ProfileNotification*
 
   return (*iter).second;
 }
+
+void MessageCenterNotificationManager::RouteNotificationToAlternateProvider(
+    const Notification& notification,
+    Profile* profile,
+    std::string extension_id) {
+  // Convert data from Notification type to NotificationOptions type.
+  scoped_ptr<extensions::api::notifications::NotificationOptions> options(
+      new extensions::api::notifications::NotificationOptions());
+  NotificationConversionHelper conversion_helper;
+  conversion_helper.NotificationToNotificationOptions(notification,
+                                                      options.get());
+
+  // Fire event to send the data to an extension/app.
+  scoped_ptr<extensions::NotificationProviderEventRouter> event_router(
+      new extensions::NotificationProviderEventRouter(profile));
+  event_router->CreateNotification(extension_id,
+                                   notification.notifier_id().id,
+                                   notification.delegate_id(),
+                                   *options);
+}
+
+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 =
+           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();
+  }
+  return extension_id;
+}