Save user selected wallpaper information to local state.

chrome/browser/chromeos/login/wallpaper_manager.cc

Index: chrome/browser/chromeos/login/wallpaper_manager.cc
diff --git a/chrome/browser/chromeos/login/wallpaper_manager.cc b/chrome/browser/chromeos/login/wallpaper_manager.cc
index 67fcafcf424dc596897979cb49e7567728834a42..c0cdbd1e0c2188ed0a5dad23252cfe93e9fc0cbc 100644
--- a/chrome/browser/chromeos/login/wallpaper_manager.cc
+++ b/chrome/browser/chromeos/login/wallpaper_manager.cc
@@ -8,19 +8,34 @@
 #include "ash/desktop_background/desktop_background_resources.h"
 #include "ash/shell.h"
 #include "base/logging.h"
+#include "base/string_number_conversions.h"
 #include "base/time.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/cros_settings.h"
-#include "chrome/browser/chromeos/login/user.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #include "chrome/browser/chromeos/login/user_manager_impl.h"
 #include "chrome/browser/prefs/pref_service.h"
+#include "chrome/browser/prefs/scoped_user_pref_update.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/power_manager_client.h"
+#include "content/public/browser/browser_thread.h"
+
+using content::BrowserThread;
 
 namespace {
+
 const int kWallpaperUpdateIntervalSec = 24 * 60 * 60;
+
+// A dictionary that maps usernames to wallpaper properties.
+const char kUsersWallpaperInfo[] = "UsersWallpaperInfo";
+
+// Names of nodes with info about wallpaper.
+const char kWallpaperDateNodeName[] = "date";
+const char kWallpaperLayoutNodeName[] = "layout";
+const char kWallpaperFileNodeName[] = "file";
+const char kWallpaperTypeNodeName[] = "type";
+
 }  // namespace
 
 namespace chromeos {
@@ -36,6 +51,12 @@ WallpaperManager* WallpaperManager::Get() {
   return g_wallpaper_manager;
 }
 
+// static
+void WallpaperManager::RegisterPrefs(PrefService* local_state) {
+  local_state->RegisterDictionaryPref(kUsersWallpaperInfo,
+                                      PrefService::UNSYNCABLE_PREF);
+}
+
 WallpaperManager::WallpaperManager() : last_selected_user_("") {
   system::TimezoneSettings::GetInstance()->AddObserver(this);
   RestartTimer();
@@ -62,18 +83,51 @@ void WallpaperManager::RestartTimer() {
   }
 }
 
+void WallpaperManager::SaveUserWallpaperInfo(const std::string& username,
+                                             const std::string& file_name,
+                                             ash::WallpaperLayout layout,
+                                             User::WallpaperType type) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+
+  // Ephemeral users can not save data to local state. We just cache the index
+  // in memory for them.
+  if (UserManager::Get()->IsCurrentUserEphemeral())
+    return;
+
+  PrefService* local_state = g_browser_process->local_state();
+  DictionaryPrefUpdate wallpaper_update(local_state,
+                                        kUsersWallpaperInfo);
+
+  base::DictionaryValue* wallpaper_properties = new base::DictionaryValue();
+  wallpaper_properties->SetString(kWallpaperDateNodeName,
+      base::Int64ToString(base::Time::Now().LocalMidnight().ToInternalValue()));
+  wallpaper_properties->SetString(kWallpaperFileNodeName,
+                            file_name);
+  wallpaper_properties->Set(kWallpaperLayoutNodeName,
+                            new base::FundamentalValue(layout));
+  wallpaper_properties->Set(kWallpaperTypeNodeName,
+                            new base::FundamentalValue(type));
+  wallpaper_update->SetWithoutPathExpansion(username, wallpaper_properties);
+}
+
 void WallpaperManager::SetLastSelectedUser(
     const std::string& last_selected_user) {
   last_selected_user_ = last_selected_user;
 }
 
-void WallpaperManager::SetWallpaperFromFile(std::string email,
-                                            const std::string& path,
-                                            ash::WallpaperLayout layout) {
+void WallpaperManager::SetWallpaperFromFilePath(const std::string& path,
+                                                ash::WallpaperLayout layout) {
   image_loader_->Start(
       path, 0, false,
-      base::Bind(&WallpaperManager::OnCustomWallpaperLoaded,
-                 base::Unretained(this), email, layout));
+      base::Bind(&WallpaperManager::OnWallpaperLoaded,
+                 base::Unretained(this), layout));
+}
+
+void WallpaperManager::SetWallpaperFromImageSkia(
+    const gfx::ImageSkia& wallpaper,
+    ash::WallpaperLayout layout) {
+  ash::Shell::GetInstance()->desktop_background_controller()->
+      SetCustomWallpaper(wallpaper, layout);
 }
 
 void WallpaperManager::UserDeselected() {
@@ -91,14 +145,6 @@ WallpaperManager::~WallpaperManager() {
   system::TimezoneSettings::GetInstance()->RemoveObserver(this);
 }
 
-void WallpaperManager::OnCustomWallpaperLoaded(const std::string& email,
-                                               ash::WallpaperLayout layout,
-                                               const UserImage& user_image) {
-  const SkBitmap& wallpaper = user_image.image();
-  ash::Shell::GetInstance()->desktop_background_controller()->
-      SetCustomWallpaper(wallpaper, layout);
-}
-
 void WallpaperManager::BatchUpdateWallpaper() {
   PrefService* local_state = g_browser_process->local_state();
   UserManager* user_manager = UserManager::Get();
@@ -139,6 +185,12 @@ void WallpaperManager::BatchUpdateWallpaper() {
   RestartTimer();
 }
 
+void WallpaperManager::OnWallpaperLoaded(ash::WallpaperLayout layout,
+                                         const UserImage& user_image) {
+  const SkBitmap& wallpaper = user_image.image();
+  SetWallpaperFromImageSkia(wallpaper, layout);
+}
+
 void WallpaperManager::SystemResumed() {
   BatchUpdateWallpaper();
 }