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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_USER_IMAGE_MANAGER_H_
      6 #define CHROME_BROWSER_CHROMEOS_LOGIN_USER_IMAGE_MANAGER_H_
      7 
      8 #include <string>
      9 
     10 #include "chrome/browser/chromeos/login/user.h"
     11 
     12 class PrefRegistrySimple;
     13 
     14 namespace base {
     15 class FilePath;
     16 }
     17 
     18 namespace gfx {
     19 class ImageSkia;
     20 }
     21 
     22 namespace chromeos {
     23 
     24 class UserImage;
     25 
     26 // Base class that provides a mechanism for updating user images.
     27 class UserImageManager {
     28  public:
     29   // Registers user image manager preferences.
     30   static void RegisterPrefs(PrefRegistrySimple* registry);
     31 
     32   virtual ~UserImageManager();
     33 
     34   // Loads user image data from Local State.
     35   virtual void LoadUserImages(const UserList& users) = 0;
     36 
     37   // Indicates that a user with the given |email| has just logged in.
     38   virtual void UserLoggedIn(const std::string& email,
     39                             bool user_is_new,
     40                             bool user_is_local) = 0;
     41 
     42   // Sets user image to the default image with index |image_index|, sends
     43   // LOGIN_USER_IMAGE_CHANGED notification and updates Local State.
     44   virtual void SaveUserDefaultImageIndex(const std::string& username,
     45                                          int image_index) = 0;
     46 
     47   // Saves image to file, sends LOGIN_USER_IMAGE_CHANGED notification and
     48   // updates Local State.
     49   virtual void SaveUserImage(const std::string& username,
     50                              const UserImage& user_image) = 0;
     51 
     52   // Tries to load user image from disk; if successful, sets it for the user,
     53   // sends LOGIN_USER_IMAGE_CHANGED notification and updates Local State.
     54   virtual void SaveUserImageFromFile(const std::string& username,
     55                                      const base::FilePath& path) = 0;
     56 
     57   // Sets profile image as user image for |username|, sends
     58   // LOGIN_USER_IMAGE_CHANGED notification and updates Local State. If the user
     59   // is not logged-in or the last |DownloadProfileImage| call has failed, a
     60   // default grey avatar will be used until the user logs in and profile image
     61   // is downloaded successfully.
     62   virtual void SaveUserImageFromProfileImage(const std::string& username) = 0;
     63 
     64   // Deletes user image and the corresponding image file.
     65   virtual void DeleteUserImage(const std::string& username) = 0;
     66 
     67   // Starts downloading the profile image for the logged-in user.
     68   // If user's image index is |kProfileImageIndex|, newly downloaded image
     69   // is immediately set as user's current picture.
     70   // |reason| is an arbitrary string (used to report UMA histograms with
     71   // download times).
     72   virtual void DownloadProfileImage(const std::string& reason) = 0;
     73 
     74   // Returns the result of the last successful profile image download, if any.
     75   // Otherwise, returns an empty bitmap.
     76   virtual const gfx::ImageSkia& DownloadedProfileImage() const = 0;
     77 
     78   // Cancels any profile image download in progress.
     79   virtual void Shutdown() = 0;
     80 };
     81 
     82 }  // namespace chromeos
     83 
     84 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_USER_IMAGE_MANAGER_H_
     85