chromeos: Replace user image notifications with observer

chrome/browser/chromeos/login/screens/user_image_screen.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/chromeos/login/screens/user_image_screen.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 55 matching lines @@
 UserImageScreen::UserImageScreen(BaseScreenDelegate* base_screen_delegate,
                                  UserImageView* view)
     : UserImageModel(base_screen_delegate),
       view_(view),
       accept_photo_after_decoding_(false),
       selected_image_(user_manager::User::USER_IMAGE_INVALID),
       is_screen_ready_(false),
       user_has_selected_image_(false) {
   if (view_)
     view_->Bind(*this);
-  notification_registrar_.Add(this,
-                              chrome::NOTIFICATION_PROFILE_IMAGE_UPDATED,
-                              content::NotificationService::AllSources());
-  notification_registrar_.Add(this,
-                              chrome::NOTIFICATION_PROFILE_IMAGE_UPDATE_FAILED,
-                              content::NotificationService::AllSources());
-  notification_registrar_.Add(this,
-                              chrome::NOTIFICATION_LOGIN_USER_IMAGE_CHANGED,
-                              content::NotificationService::AllSources());
+  user_manager::UserManager::Get()->AddObserver(this);
   GetContextEditor().SetString(kContextKeyProfilePictureDataURL, std::string());
 }
 
 UserImageScreen::~UserImageScreen() {
+  user_manager::UserManager::Get()->RemoveObserver(this);
   CameraPresenceNotifier::GetInstance()->RemoveObserver(this);
   if (view_)
     view_->Unbind();
 }
 
 void UserImageScreen::OnScreenReady() {
   is_screen_ready_ = true;
   if (!IsWaitingForSync())
     HideCurtain();
 }
@@ skipping 187 matching lines @@
   GetContextEditor().SetString(
       kContextKeySelectedImageURL,
       default_user_image::GetDefaultImageUrl(selected_image_));
 
   // Start fetching the profile image.
   GetUserImageManager()->DownloadProfileImage(kProfileDownloadReason);
 }
 
 void UserImageScreen::Hide() {
   CameraPresenceNotifier::GetInstance()->RemoveObserver(this);
-  notification_registrar_.RemoveAll();
+  user_manager::UserManager::Get()->RemoveObserver(this);
   policy_registrar_.reset();
   sync_timer_.reset();
   if (UserImageSyncObserver* sync_observer = GetSyncObserver())
     sync_observer->RemoveObserver(this);
   if (view_)
     view_->Hide();
 }
 
 void UserImageScreen::OnViewDestroyed(UserImageView* view) {
   if (view_ == view)
     view_ = nullptr;
 }
 
-void UserImageScreen::Observe(int type,
-                              const content::NotificationSource& source,
-                              const content::NotificationDetails& details) {
-  switch (type) {
-    case chrome::NOTIFICATION_PROFILE_IMAGE_UPDATED: {
-      // We've got a new profile image.
-      GetContextEditor().SetString(
-          kContextKeyProfilePictureDataURL,
-          webui::GetBitmapDataUrl(
-              *content::Details<const gfx::ImageSkia>(details)
-                   .ptr()
-                   ->bitmap()));
-      break;
-    }
-    case chrome::NOTIFICATION_PROFILE_IMAGE_UPDATE_FAILED: {
-      // User has a default profile image or fetching profile image has failed.
-      GetContextEditor().SetString(kContextKeyProfilePictureDataURL,
-                                   std::string());
-      break;
-    }
-    case chrome::NOTIFICATION_LOGIN_USER_IMAGE_CHANGED: {
-      GetContextEditor().SetString(
-          kContextKeySelectedImageURL,
-          default_user_image::GetDefaultImageUrl(GetUser()->image_index()));
-      break;
-    }
-    default:
-      NOTREACHED();
-  }
+void UserImageScreen::OnUserImageChanged(const user_manager::User& user) {
+  GetContextEditor().SetString(
+      kContextKeySelectedImageURL,
+      default_user_image::GetDefaultImageUrl(GetUser()->image_index()));
+}
+
+void UserImageScreen::OnUserProfileImageUpdateFailed(
+    const user_manager::User& user) {
+  // User has a default profile image or fetching profile image has failed.
+  GetContextEditor().SetString(kContextKeyProfilePictureDataURL, std::string());
+}
+
+void UserImageScreen::OnUserProfileImageUpdated(
+    const user_manager::User& user,
+    const gfx::ImageSkia& profile_image) {
+  // We've got a new profile image.
+  GetContextEditor().SetString(
+      kContextKeyProfilePictureDataURL,
+      webui::GetBitmapDataUrl(*profile_image.bitmap()));
 }
 
 void UserImageScreen::ExitScreen() {
   policy_registrar_.reset();
   sync_timer_.reset();
   if (UserImageSyncObserver* sync_observer = GetSyncObserver())
     sync_observer->RemoveObserver(this);
   Finish(BaseScreenDelegate::USER_IMAGE_SELECTED);
 }
 
 void UserImageScreen::ReportSyncResult(SyncResult timed_out) const {
   base::TimeDelta duration = base::Time::Now() - sync_waiting_start_time_;
   UMA_HISTOGRAM_TIMES("Login.NewUserPriorityPrefsSyncTime", duration);
   UMA_HISTOGRAM_ENUMERATION("Login.NewUserPriorityPrefsSyncResult",
                             static_cast<int>(timed_out),
                             static_cast<int>(SyncResult::COUNT));
 }
 
 }  // namespace chromeos