[Profiles] Send out less profile avatar related notifications

chrome/browser/profiles/profile_info_cache.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/profiles/profile_info_cache.h"
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/i18n/case_conversion.h"
 #include "base/logging.h"
@@ skipping 117 matching lines @@
   gfx::Image image = gfx::Image::CreateFrom1xPNGBytes(
       base::RefCountedString::TakeString(&image_data));
   if (image.IsEmpty()) {
     LOG(ERROR) << "Failed to decode PNG file.";
     return;
   }
 
   *out_image = new gfx::Image(image);
 }
 
+void RunCallbackIfFileMissing(const base::FilePath& file_path,
+                              const base::Closure& callback) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
+  if (!base::PathExists(file_path))
+    BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, callback);
+}
+
 void DeleteBitmap(const base::FilePath& image_path) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   base::DeleteFile(image_path, false);
 }
 
 }  // namespace
 
 ProfileInfoCache::ProfileInfoCache(PrefService* prefs,
                                    const base::FilePath& user_data_dir)
     : prefs_(prefs),
@@ skipping 59 matching lines @@
   info->SetBoolean(kIsOmittedFromProfileListKey, !supervised_user_id.empty());
   info->SetBoolean(kProfileIsEphemeral, false);
   info->SetBoolean(kIsUsingDefaultNameKey, IsDefaultProfileName(name));
   // Assume newly created profiles use a default avatar.
   info->SetBoolean(kIsUsingDefaultAvatarKey, true);
   cache->SetWithoutPathExpansion(key, info.release());
 
   sorted_keys_.insert(FindPositionForProfile(key, name), key);
 
   if (switches::IsNewAvatarMenu())
-    DownloadHighResAvatar(icon_index, profile_path);
+    DownloadHighResAvatarIfNeeded(icon_index, profile_path);
 
   FOR_EACH_OBSERVER(ProfileInfoCacheObserver,
                     observer_list_,
                     OnProfileAdded(profile_path));
 
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_PROFILE_CACHED_INFO_CHANGED,
       content::NotificationService::AllSources(),
       content::NotificationService::NoDetails());
 }
@@ skipping 301 matching lines @@
                                                      size_t icon_index) {
   scoped_ptr<base::DictionaryValue> info(
       GetInfoForProfileAtIndex(index)->DeepCopy());
   info->SetString(kAvatarIconKey,
       profiles::GetDefaultAvatarIconUrl(icon_index));
   // This takes ownership of |info|.
   SetInfoForProfileAtIndex(index, info.release());
 
   base::FilePath profile_path = GetPathOfProfileAtIndex(index);
 
-  // If needed, start downloading the high-res avatar.
   if (switches::IsNewAvatarMenu())
-    DownloadHighResAvatar(icon_index, profile_path);
+    DownloadHighResAvatarIfNeeded(icon_index, profile_path);
 
   FOR_EACH_OBSERVER(ProfileInfoCacheObserver,
                     observer_list_,
                     OnProfileAvatarChanged(profile_path));
 }
 
 void ProfileInfoCache::SetIsOmittedProfileAtIndex(size_t index,
                                                   bool is_omitted) {
   if (IsOmittedProfileAtIndex(index) == is_omitted)
     return;
@@ skipping 134 matching lines @@
 }
 
 void ProfileInfoCache::SetIsUsingGAIAPictureOfProfileAtIndex(size_t index,
                                                              bool value) {
   scoped_ptr<base::DictionaryValue> info(
       GetInfoForProfileAtIndex(index)->DeepCopy());
   info->SetBoolean(kUseGAIAPictureKey, value);
   // This takes ownership of |info|.
   SetInfoForProfileAtIndex(index, info.release());
 
-  // Retrieve some info to update observers who care about avatar changes.
   base::FilePath profile_path = GetPathOfProfileAtIndex(index);
   FOR_EACH_OBSERVER(ProfileInfoCacheObserver,
                     observer_list_,
                     OnProfileAvatarChanged(profile_path));
 }
 
 void ProfileInfoCache::SetProfileSigninRequiredAtIndex(size_t index,
                                                        bool value) {
   if (value == ProfileIsSigninRequiredAtIndex(index))
     return;
@@ skipping 134 matching lines @@
     names.push_back(name);
   }
   return names;
 }
 
 // static
 void ProfileInfoCache::RegisterPrefs(PrefRegistrySimple* registry) {
   registry->RegisterDictionaryPref(prefs::kProfileInfoCache);
 }
 
-void ProfileInfoCache::DownloadHighResAvatar(
+void ProfileInfoCache::DownloadHighResAvatarIfNeeded(
     size_t icon_index,
     const base::FilePath& profile_path) {
   // Downloading is only supported on desktop.
 #if defined(OS_ANDROID) || defined(OS_IOS) || defined(OS_CHROMEOS)
   return;
 #endif
 
-  // TODO(noms): We should check whether the file already exists on disk
-  // before trying to re-download it. For now, since this is behind a flag and
-  // the resources are still changing, re-download it every time the profile
-  // avatar changes, to make sure we have the latest copy.
-  std::string file_name = profiles::GetDefaultAvatarIconFileNameAtIndex(
-      icon_index);
-  // If the file is already being downloaded, don't start another download.
-  if (avatar_images_downloads_in_progress_[file_name])
-    return;
-
-  // Start the download for this file. The cache takes ownership of the
-  // |avatar_downloader|, which will be deleted when the download completes, or
-  // if that never happens, when the ProfileInfoCache is destroyed.
-  ProfileAvatarDownloader* avatar_downloader = new ProfileAvatarDownloader(
-      icon_index,
-      profile_path,
-      this);
-  avatar_images_downloads_in_progress_[file_name] = avatar_downloader;
-  avatar_downloader->Start();
+  const base::FilePath& file_path =
+      profiles::GetPathOfHighResAvatarAtIndex(icon_index);
+  base::Closure callback =
+      base::Bind(&ProfileInfoCache::DownloadHighResAvatar,
+                 AsWeakPtr(),
+                 icon_index,
+                 profile_path);
+  BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
+      base::Bind(&RunCallbackIfFileMissing, file_path, callback));
 }
 
 void ProfileInfoCache::SaveAvatarImageAtPath(
     const gfx::Image* image,
     const std::string& key,
     const base::FilePath& image_path,
     const base::FilePath& profile_path) {
   cached_avatar_images_[key] = new gfx::Image(*image);
 
   scoped_ptr<ImageData> data(new ImageData);
   scoped_refptr<base::RefCountedMemory> png_data = image->As1xPNGBytes();
   data->assign(png_data->front(), png_data->front() + png_data->size());
 
+  // Remove the file from the list of downloads in progress. Note that this list
+  // only contains the high resolution avatars, and not the Gaia profile images.
+  if (avatar_images_downloads_in_progress_[key]) {
+    delete avatar_images_downloads_in_progress_[key];
+    avatar_images_downloads_in_progress_[key] = NULL;
+  }
+
   if (!data->size()) {
     LOG(ERROR) << "Failed to PNG encode the image.";
   } else {
     base::Closure callback = base::Bind(&ProfileInfoCache::OnAvatarPictureSaved,
         AsWeakPtr(), key, profile_path);
-
     BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
         base::Bind(&SaveBitmap, base::Passed(&data), image_path, callback));
   }
 }
 
 const base::DictionaryValue* ProfileInfoCache::GetInfoForProfileAtIndex(
     size_t index) const {
   DCHECK_LT(index, GetNumberOfProfiles());
   const base::DictionaryValue* cache =
       prefs_->GetDictionary(prefs::kProfileInfoCache);
@@ skipping 101 matching lines @@
 
   if (!strcmp(key.c_str(), profiles::GetNoHighResAvatarFileName()))
       return NULL;
 
   base::FilePath image_path =
       profiles::GetPathOfHighResAvatarAtIndex(avatar_index);
   return LoadAvatarPictureFromPath(GetPathOfProfileAtIndex(index),
                                    key, image_path);
 }
 
+void ProfileInfoCache::DownloadHighResAvatar(
+    size_t icon_index,
+    const base::FilePath& profile_path) {
+  // Downloading is only supported on desktop.
+#if defined(OS_ANDROID) || defined(OS_IOS) || defined(OS_CHROMEOS)
+  return;
+#endif
+  const std::string file_name =
+      profiles::GetDefaultAvatarIconFileNameAtIndex(icon_index);
+  // If the file is already being downloaded, don't start another download.
+  if (avatar_images_downloads_in_progress_[file_name])
+    return;
+
+  // Start the download for this file. The cache takes ownership of the
+  // |avatar_downloader|, which will be deleted when the download completes, or
+  // if that never happens, when the ProfileInfoCache is destroyed.
+  ProfileAvatarDownloader* avatar_downloader = new ProfileAvatarDownloader(
+      icon_index,
+      profile_path,
+      this);
+  avatar_images_downloads_in_progress_[file_name] = avatar_downloader;
+  avatar_downloader->Start();
+}
+
 const gfx::Image* ProfileInfoCache::LoadAvatarPictureFromPath(
     const base::FilePath& profile_path,
     const std::string& key,
     const base::FilePath& image_path) const {
   // If the picture is already loaded then use it.
   if (cached_avatar_images_.count(key)) {
     if (cached_avatar_images_[key]->IsEmpty())
       return NULL;
     return cached_avatar_images_[key];
   }
@@ skipping 28 matching lines @@
   }
   delete image;
 
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_PROFILE_CACHED_INFO_CHANGED,
       content::NotificationService::AllSources(),
       content::NotificationService::NoDetails());
 
   FOR_EACH_OBSERVER(ProfileInfoCacheObserver,
                     observer_list_,
-                    OnProfileAvatarChanged(profile_path));
+                    OnProfileHighResAvatarLoaded(profile_path));
 }
 
 void ProfileInfoCache::OnAvatarPictureSaved(
       const std::string& file_name,
       const base::FilePath& profile_path) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_PROFILE_CACHE_PICTURE_SAVED,
       content::NotificationService::AllSources(),
       content::NotificationService::NoDetails());
 
   FOR_EACH_OBSERVER(ProfileInfoCacheObserver,
-                    observer_list_,
-                    OnProfileAvatarChanged(profile_path));
-
-  // Remove the file from the list of downloads in progress. Note that this list
-  // only contains the high resolution avatars, and not the Gaia profile images.
-  if (!avatar_images_downloads_in_progress_[file_name])
-    return;
-
-  delete avatar_images_downloads_in_progress_[file_name];
-  avatar_images_downloads_in_progress_[file_name] = NULL;
+      observer_list_,
+      OnProfileHighResAvatarLoaded(profile_path));
 }
 
 void ProfileInfoCache::MigrateLegacyProfileNamesAndDownloadAvatars() {
   DCHECK(switches::IsNewAvatarMenu());
 
   // Only do this on desktop platforms.
 #if !defined(OS_ANDROID) && !defined(OS_IOS) && !defined(OS_CHROMEOS)
   // Migrate any legacy profile names ("First user", "Default Profile") to
   // new style default names ("Person 1"). The problem here is that every
   // time you rename a profile, the ProfileInfoCache sorts itself, so
   // whatever you were iterating through is no longer valid. We need to
   // save a list of the profile paths (which thankfully do not change) that
   // need to be renamed. We also can't pre-compute the new names, as they
   // depend on the names of all the other profiles in the info cache, so they
   // need to be re-computed after each rename.
   std::vector<base::FilePath> profiles_to_rename;
 
   const base::string16 default_profile_name = base::i18n::ToLower(
       l10n_util::GetStringUTF16(IDS_DEFAULT_PROFILE_NAME));
   const base::string16 default_legacy_profile_name = base::i18n::ToLower(
       l10n_util::GetStringUTF16(IDS_LEGACY_DEFAULT_PROFILE_NAME));
 
   for (size_t i = 0; i < GetNumberOfProfiles(); i++) {
-    // If needed, start downloading the high-res avatar for this profile.
-    DownloadHighResAvatar(GetAvatarIconIndexOfProfileAtIndex(i),
-                          GetPathOfProfileAtIndex(i));
+    DownloadHighResAvatarIfNeeded(GetAvatarIconIndexOfProfileAtIndex(i),
+                                  GetPathOfProfileAtIndex(i));
 
     base::string16 name = base::i18n::ToLower(GetNameOfProfileAtIndex(i));
     if (name == default_profile_name || name == default_legacy_profile_name)
       profiles_to_rename.push_back(GetPathOfProfileAtIndex(i));
   }
 
   // Rename the necessary profiles.
   std::vector<base::FilePath>::const_iterator it;
   for (it = profiles_to_rename.begin(); it != profiles_to_rename.end(); ++it) {
     size_t profile_index = GetIndexOfProfileWithPath(*it);
     SetProfileIsUsingDefaultNameAtIndex(profile_index, true);
     // This will assign a new "Person %d" type name and re-sort the cache.
     SetNameOfProfileAtIndex(profile_index, ChooseNameForNewProfile(
         GetAvatarIconIndexOfProfileAtIndex(profile_index)));
   }
 #endif
 }