chrome/browser/profiles/profile_info_cache.h

   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_PROFILES_PROFILE_INFO_CACHE_H_
   6 #define CHROME_BROWSER_PROFILES_PROFILE_INFO_CACHE_H_
   7
   8 #include <map>
   9 #include <string>
  10 #include <vector>
  11
  12 #include "base/basictypes.h"
  13 #include "base/compiler_specific.h"
  14 #include "base/files/file_path.h"
  15 #include "base/memory/weak_ptr.h"
  16 #include "base/observer_list.h"
  17 #include "base/strings/string16.h"
  18 #include "chrome/browser/profiles/profile_info_cache_observer.h"
  19 #include "chrome/browser/profiles/profile_info_interface.h"
  20
  21 namespace gfx {
  22 class Image;
  23 }
  24
  25 namespace base {
  26 class DictionaryValue;
  27 }
  28
  29 class PrefService;
  30 class PrefRegistrySimple;
  31 class ProfileAvatarDownloader;
  32
  33 // This class saves various information about profiles to local preferences.
  34 // This cache can be used to display a list of profiles without having to
  35 // actually load the profiles from disk.
  36 class ProfileInfoCache : public ProfileInfoInterface,
  37                          public base::SupportsWeakPtr<ProfileInfoCache> {
  38  public:
  39   ProfileInfoCache(PrefService* prefs, const base::FilePath& user_data_dir);
  40   virtual ~ProfileInfoCache();
  41
  42   // If the |supervised_user_id| is non-empty, the profile will be marked to be
  43   // omitted from the avatar-menu list on desktop versions. This is used while a
  44   // supervised user is in the process of being registered with the server. Use
  45   // SetIsOmittedProfileAtIndex() to clear the flag when the profile is ready to
  46   // be shown in the menu.
  47   void AddProfileToCache(const base::FilePath& profile_path,
  48                          const base::string16& name,
  49                          const base::string16& username,
  50                          size_t icon_index,
  51                          const std::string& supervised_user_id);
  52   void DeleteProfileFromCache(const base::FilePath& profile_path);
  53
  54   // ProfileInfoInterface:
  55   virtual size_t GetNumberOfProfiles() const override;
  56   // Don't cache this value and reuse, because resorting the menu could cause
  57   // the item being referred to to change out from under you.
  58   virtual size_t GetIndexOfProfileWithPath(
  59       const base::FilePath& profile_path) const override;
  60   virtual base::string16 GetNameOfProfileAtIndex(size_t index) const override;
  61   virtual base::string16 GetShortcutNameOfProfileAtIndex(size_t index)
  62       const override;
  63   virtual base::FilePath GetPathOfProfileAtIndex(size_t index) const override;
  64   virtual base::Time GetProfileActiveTimeAtIndex(size_t index) const override;
  65   virtual base::string16 GetUserNameOfProfileAtIndex(
  66       size_t index) const override;
  67   virtual const gfx::Image& GetAvatarIconOfProfileAtIndex(
  68       size_t index) const override;
  69   virtual std::string GetLocalAuthCredentialsOfProfileAtIndex(
  70       size_t index) const override;
  71   // Note that a return value of false could mean an error in collection or
  72   // that there are currently no background apps running. However, the action
  73   // which results is the same in both cases (thus far).
  74   virtual bool GetBackgroundStatusOfProfileAtIndex(
  75       size_t index) const override;
  76   virtual base::string16 GetGAIANameOfProfileAtIndex(
  77       size_t index) const override;
  78   virtual base::string16 GetGAIAGivenNameOfProfileAtIndex(
  79       size_t index) const override;
  80   // Returns the GAIA picture for the given profile. This may return NULL
  81   // if the profile does not have a GAIA picture or if the picture must be
  82   // loaded from disk.
  83   virtual const gfx::Image* GetGAIAPictureOfProfileAtIndex(
  84       size_t index) const override;
  85   virtual bool IsUsingGAIAPictureOfProfileAtIndex(
  86       size_t index) const override;
  87   virtual bool ProfileIsSupervisedAtIndex(size_t index) const override;
  88   virtual bool IsOmittedProfileAtIndex(size_t index) const override;
  89   virtual bool ProfileIsSigninRequiredAtIndex(size_t index) const override;
  90   virtual std::string GetSupervisedUserIdOfProfileAtIndex(size_t index) const
  91       override;
  92   virtual bool ProfileIsEphemeralAtIndex(size_t index) const override;
  93   virtual bool ProfileIsUsingDefaultNameAtIndex(size_t index) const override;
  94   virtual bool ProfileIsUsingDefaultAvatarAtIndex(size_t index) const override;
  95
  96   size_t GetAvatarIconIndexOfProfileAtIndex(size_t index) const;
  97
  98   void SetProfileActiveTimeAtIndex(size_t index);
  99   // Warning: This will re-sort profiles and thus may change indices!
 100   void SetNameOfProfileAtIndex(size_t index, const base::string16& name);
 101   void SetShortcutNameOfProfileAtIndex(size_t index,
 102                                        const base::string16& name);
 103   void SetUserNameOfProfileAtIndex(size_t index,
 104                                    const base::string16& user_name);
 105   void SetAvatarIconOfProfileAtIndex(size_t index, size_t icon_index);
 106   void SetIsOmittedProfileAtIndex(size_t index, bool is_omitted);
 107   void SetSupervisedUserIdOfProfileAtIndex(size_t index, const std::string& id);
 108   void SetLocalAuthCredentialsOfProfileAtIndex(size_t index,
 109                                                const std::string& auth);
 110   void SetBackgroundStatusOfProfileAtIndex(size_t index,
 111                                            bool running_background_apps);
 112   // Warning: This will re-sort profiles and thus may change indices!
 113   void SetGAIANameOfProfileAtIndex(size_t index, const base::string16& name);
 114   // Warning: This will re-sort profiles and thus may change indices!
 115   void SetGAIAGivenNameOfProfileAtIndex(size_t index,
 116                                         const base::string16& name);
 117   void SetGAIAPictureOfProfileAtIndex(size_t index, const gfx::Image* image);
 118   void SetIsUsingGAIAPictureOfProfileAtIndex(size_t index, bool value);
 119   void SetProfileSigninRequiredAtIndex(size_t index, bool value);
 120   void SetProfileIsEphemeralAtIndex(size_t index, bool value);
 121   void SetProfileIsUsingDefaultNameAtIndex(size_t index, bool value);
 122   void SetProfileIsUsingDefaultAvatarAtIndex(size_t index, bool value);
 123
 124   // Determines whether |name| is one of the default assigned names.
 125   bool IsDefaultProfileName(const base::string16& name) const;
 126
 127   // Returns unique name that can be assigned to a newly created profile.
 128   base::string16 ChooseNameForNewProfile(size_t icon_index) const;
 129
 130   // Returns an avatar icon index that can be assigned to a newly created
 131   // profile. Note that the icon may not be unique since there are a limited
 132   // set of default icons.
 133   size_t ChooseAvatarIconIndexForNewProfile() const;
 134
 135   const base::FilePath& GetUserDataDir() const;
 136
 137   // Gets all names of profiles associated with this instance of Chrome.
 138   // Because this method will be called during uninstall, before the creation
 139   // of the ProfileManager, it reads directly from the local state preferences,
 140   // rather than going through the ProfileInfoCache object.
 141   static std::vector<base::string16> GetProfileNames();
 142
 143   // Register cache related preferences in Local State.
 144   static void RegisterPrefs(PrefRegistrySimple* registry);
 145
 146   // Starts downloading the high res avatar at index |icon_index| for profile
 147   // with path |profile_path|.
 148   void DownloadHighResAvatar(size_t icon_index,
 149                              const base::FilePath& profile_path);
 150
 151   // Saves the avatar |image| at |image_path|. This is used both for the
 152   // GAIA profile pictures and the ProfileAvatarDownloader that is used to
 153   // download the high res avatars.
 154   void SaveAvatarImageAtPath(const gfx::Image* image,
 155                              const std::string& key,
 156                              const base::FilePath& image_path,
 157                              const base::FilePath& profile_path);
 158
 159   void AddObserver(ProfileInfoCacheObserver* obs);
 160   void RemoveObserver(ProfileInfoCacheObserver* obs);
 161
 162  private:
 163   FRIEND_TEST_ALL_PREFIXES(ProfileInfoCacheTest, DownloadHighResAvatarTest);
 164
 165   const base::DictionaryValue* GetInfoForProfileAtIndex(size_t index) const;
 166   // Saves the profile info to a cache and takes ownership of |info|.
 167   // Currently the only information that is cached is the profile's name,
 168   // user name, and avatar icon.
 169   void SetInfoQuietlyForProfileAtIndex(size_t index,
 170                                        base::DictionaryValue* info);
 171   void SetInfoForProfileAtIndex(size_t index, base::DictionaryValue* info);
 172   std::string CacheKeyFromProfilePath(const base::FilePath& profile_path) const;
 173   std::vector<std::string>::iterator FindPositionForProfile(
 174       const std::string& search_key,
 175       const base::string16& search_name);
 176
 177   // Returns true if the given icon index is not in use by another profie.
 178   bool IconIndexIsUnique(size_t icon_index) const;
 179
 180   // Tries to find an icon index that satisfies all the given conditions.
 181   // Returns true if an icon was found, false otherwise.
 182   bool ChooseAvatarIconIndexForNewProfile(bool allow_generic_icon,
 183                                           bool must_be_unique,
 184                                           size_t* out_icon_index) const;
 185
 186   // Updates the position of the profile at the given index so that the list
 187   // of profiles is still sorted.
 188   void UpdateSortForProfileIndex(size_t index);
 189
 190   // Loads or uses an already loaded high resolution image of the
 191   // generic profile avatar.
 192   const gfx::Image* GetHighResAvatarOfProfileAtIndex(size_t index) const;
 193
 194   // Returns the decoded image at |image_path|. Used both by the GAIA profile
 195   // image and the high res avatars.
 196   const gfx::Image* LoadAvatarPictureFromPath(
 197       const std::string& key,
 198       const base::FilePath& image_path) const;
 199
 200   // Called when the picture given by |key| has been loaded from disk and
 201   // decoded into |image|.
 202   void OnAvatarPictureLoaded(const std::string& key,
 203                              gfx::Image** image) const;
 204   // Called when the picture given by |file_name| has been saved to disk.
 205   // Used both for the GAIA profile picture and the high res avatar files.
 206   void OnAvatarPictureSaved(const std::string& file_name,
 207                             const base::FilePath& profile_path);
 208
 209   // Migrate any legacy profile names ("First user", "Default Profile") to
 210   // new style default names ("Person 1"), and download and high-res avatars
 211   // used by the profiles.
 212   void MigrateLegacyProfileNamesAndDownloadAvatars();
 213
 214   PrefService* prefs_;
 215   std::vector<std::string> sorted_keys_;
 216   base::FilePath user_data_dir_;
 217
 218   ObserverList<ProfileInfoCacheObserver> observer_list_;
 219
 220   // A cache of gaia/high res avatar profile pictures. This cache is updated
 221   // lazily so it needs to be mutable.
 222   mutable std::map<std::string, gfx::Image*> cached_avatar_images_;
 223   // Marks a profile picture as loading from disk. This prevents a picture from
 224   // loading multiple times.
 225   mutable std::map<std::string, bool> cached_avatar_images_loading_;
 226
 227   // Map of profile pictures currently being downloaded from the remote
 228   // location and the ProfileAvatarDownloader instances downloading them.
 229   // This prevents a picture from being downloaded multiple times. The
 230   // ProfileAvatarDownloader instances are deleted when the download completes
 231   // or when the ProfileInfoCache is destroyed.
 232   mutable std::map<std::string, ProfileAvatarDownloader*>
 233       avatar_images_downloads_in_progress_;
 234
 235   DISALLOW_COPY_AND_ASSIGN(ProfileInfoCache);
 236 };
 237
 238 #endif  // CHROME_BROWSER_PROFILES_PROFILE_INFO_CACHE_H_