Store profile avatar to preferences

chrome/browser/profiles/profile_info_cache.cc

Index: chrome/browser/profiles/profile_info_cache.cc
diff --git a/chrome/browser/profiles/profile_info_cache.cc b/chrome/browser/profiles/profile_info_cache.cc
new file mode 100644
index 0000000000000000000000000000000000000000..4207c159ff3e0a308b39e51bbcd4c189179d5a58
--- /dev/null
+++ b/chrome/browser/profiles/profile_info_cache.cc
@@ -0,0 +1,208 @@
+// Copyright (c) 2011 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/logging.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/string_number_conversions.h"
+#include "base/stringprintf.h"
+#include "base/utf_string_conversions.h"
+#include "base/values.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/prefs/pref_service.h"
+#include "chrome/browser/prefs/scoped_user_pref_update.h"
+#include "chrome/common/pref_names.h"
+#include "grit/theme_resources.h"
+#include "ui/base/resource/resource_bundle.h"
+
+namespace {
+
+const char* kNameKey = "name";

[willchan no longer on Chromium, 2011/06/21 08:26:27]

Prefer `static const char kNameKey[] = "name";` over this for two reasons:
* This isn't actually const. It's a non-const pointer to a const char array. If
you use const, then function calls defined by the language standard, such as
strlen(), can actually be completely optimized away by the compiler and replaced
with the actual length.
* Saves a pointer. Typically you don't need a pointer. You just need the const
char array.

[sail, 2011/06/21 16:28:13]

Done.

+const char* kAvatarIconKey = "avatar_icon";
+const char* kDefaultUrlPrefix = "chrome://theme/IDR_PROFILE_AVATAR_";
+
+const int kDefaultAvatarIconResources[] = {
+  IDR_PROFILE_AVATAR_0,
+  IDR_PROFILE_AVATAR_1,
+  IDR_PROFILE_AVATAR_2,
+  IDR_PROFILE_AVATAR_3,
+};
+
+const int kDefaultAvatarIconsCount = arraysize(kDefaultAvatarIconResources);
+
+// Checks if the given URL points to one of the default avatar icons. if it is,
+// returns true and its index through |icon_index|. If not, returns false.
+bool IsDefaultAvatarIconUrl(const std::string& url, size_t* icon_index) {
+  DCHECK(icon_index);
+  if (url.find(kDefaultUrlPrefix) != 0)
+    return false;
+
+  int int_value = -1;
+  if (base::StringToInt(url.begin() + url.size(),
+                        url.end(),
+                        &int_value)) {
+    if (int_value < 0 || int_value >= kDefaultAvatarIconsCount)
+      return false;
+    *icon_index = int_value;
+    return true;
+  }
+
+  return false;
+}
+
+// Returns a URL for the default avatar icon with specified index.
+std::string GetDefaultAvatarIconUrl(int icon_index) {
+  DCHECK_LT(icon_index, kDefaultAvatarIconsCount);
+  return StringPrintf("%s%d", kDefaultUrlPrefix, icon_index);
+}
+
+} // namespace
+
+ProfileInfoCache::ProfileInfoCache(const FilePath& user_data_dir)
+    : user_data_dir_(user_data_dir) {
+  // Populate the cache
+  const DictionaryValue* cache =
+      g_browser_process->local_state()->GetDictionary(prefs::kProfileInfoCache);

[willchan no longer on Chromium, 2011/06/21 08:26:27]

This is why your test is crashing. g_browser_process is set to TestingProcess
instead of BrowserProcessImpl in unit_tests. local_state() probably returns
NULL. Your best bet is to use dependency injection here. Pass the local state
PrefService in as a dependency to ProfileInfoCache.

[sail, 2011/06/21 16:28:13]

Done.
Awesome, thanks!

+  for (DictionaryValue::key_iterator it = cache->begin_keys();
+       it != cache->end_keys(); ++it) {
+    std::string key = *it;
+    DictionaryValue* info = NULL;
+    cache->GetDictionary(key, &info);
+    string16 name;
+    info->GetString(kNameKey, &name);
+    sorted_keys_.insert(FindPositionForProfile(key, name), key);
+  }
+}
+
+void ProfileInfoCache::AddProfileToCache(const FilePath& profile_path,
+                                         const string16& name,
+                                         size_t icon_index) {
+  std::string key = CacheKeyFromProfilePath(profile_path);
+  DictionaryPrefUpdate update(g_browser_process->local_state(),
+                              prefs::kProfileInfoCache);
+  DictionaryValue* cache = update.Get();
+
+  scoped_ptr<DictionaryValue> info(new DictionaryValue);
+  info->SetString(kNameKey, name);
+  info->SetString(kAvatarIconKey, GetDefaultAvatarIconUrl(icon_index));
+  cache->Set(key, info.release());
+
+  sorted_keys_.insert(FindPositionForProfile(key, name), key);
+}
+
+void ProfileInfoCache::DeleteProfileFromCache(const FilePath& profile_path) {
+  DictionaryPrefUpdate update(g_browser_process->local_state(),
+                              prefs::kProfileInfoCache);
+  DictionaryValue* cache = update.Get();
+
+  std::string key = CacheKeyFromProfilePath(profile_path);
+  cache->Remove(key, NULL);
+  sorted_keys_.erase(std::find(sorted_keys_.begin(), sorted_keys_.end(), key));
+}
+
+size_t ProfileInfoCache::GetNumberOfProfiles() const {
+  return sorted_keys_.size();
+}
+
+string16 ProfileInfoCache::GetNameOfProfileAtIndex(size_t index) const {
+  string16 name;
+  GetInfoForProfileAtIndex(index)->GetString(kNameKey, &name);
+  return name;
+}
+
+FilePath ProfileInfoCache::GetPathOfProfileAtIndex(size_t index) const {
+  FilePath::StringType base_name;
+#if defined(OS_POSIX)
+  base_name = sorted_keys_[index];
+#elif defined(OS_WIN)
+  base_name = ASCIIToWide(sorted_keys_[index]);
+#endif
+  return user_data_dir_.Append(base_name);
+}
+
+const gfx::Image& ProfileInfoCache::GetAvatarIconOfProfileAtIndex(
+    size_t index) const {
+  std::string icon_url;
+  GetInfoForProfileAtIndex(index)->GetString(kAvatarIconKey, &icon_url);
+  size_t icon_index = 0;
+  if (IsDefaultAvatarIconUrl(icon_url, &icon_index)) {
+    int resource_id = GetDefaultAvatarIconResourceIDAtIndex(icon_index);
+    return ResourceBundle::GetSharedInstance().GetImageNamed(resource_id);
+  }
+
+  DLOG(WARNING) << "Unknown avatar icon: " << icon_url;
+  return ResourceBundle::GetSharedInstance().GetImageNamed(
+      GetDefaultAvatarIconResourceIDAtIndex(0));
+}
+
+void ProfileInfoCache::SetNameOfProfileAtIndex(size_t index,
+                                               const string16& name) {
+  scoped_ptr<DictionaryValue> info(GetInfoForProfileAtIndex(index)->DeepCopy());
+  info->SetString(kNameKey, name);
+  // This takes ownership of |info|.
+  SetInfoForProfileAtIndex(index, info.release());
+}
+
+void ProfileInfoCache::SetAvatarIconOfProfileAtIndex(size_t index,
+                                                     size_t icon_index) {
+  scoped_ptr<DictionaryValue> info(GetInfoForProfileAtIndex(index)->DeepCopy());
+  info->SetString(kAvatarIconKey, GetDefaultAvatarIconUrl(icon_index));
+  // This takes ownership of |info|.
+  SetInfoForProfileAtIndex(index, info.release());
+}
+
+size_t ProfileInfoCache::GetDefaultAvatarIconCount() {
+  return kDefaultAvatarIconsCount;
+}
+
+int ProfileInfoCache::GetDefaultAvatarIconResourceIDAtIndex(size_t index) {
+  DCHECK_LT(index, GetDefaultAvatarIconCount());
+  return kDefaultAvatarIconResources[index];
+}
+
+const DictionaryValue* ProfileInfoCache::GetInfoForProfileAtIndex(
+    size_t index) const {
+  DCHECK_LT(index, GetNumberOfProfiles());
+  const DictionaryValue* cache =
+      g_browser_process->local_state()->GetDictionary(prefs::kProfileInfoCache);
+  DictionaryValue* info = NULL;
+  cache->GetDictionary(sorted_keys_[index], &info);
+  return info;
+}
+
+void ProfileInfoCache::SetInfoForProfileAtIndex(size_t index,
+                                                DictionaryValue* info) {
+  DictionaryPrefUpdate update(g_browser_process->local_state(),
+                              prefs::kProfileInfoCache);
+  DictionaryValue* cache = update.Get();
+  cache->Set(sorted_keys_[index], info);
+}
+
+std::string ProfileInfoCache::CacheKeyFromProfilePath(
+    const FilePath& profile_path) const {
+  DCHECK(user_data_dir_ == profile_path.DirName());
+  FilePath base_name = profile_path.BaseName();
+  return base_name.MaybeAsASCII();
+}
+
+std::vector<std::string>::iterator ProfileInfoCache::FindPositionForProfile(
+    std::string search_key,
+    const string16& search_name) {
+  for (size_t i = 0; i < GetNumberOfProfiles(); ++i) {
+    int name_compare = search_name.compare(GetNameOfProfileAtIndex(i));
+    if (name_compare < 0)
+      return sorted_keys_.begin() + i;
+    if (name_compare == 0) {
+      int key_compare = search_key.compare(sorted_keys_[i]);
+      if (key_compare < 0)
+        return sorted_keys_.begin() + i;
+    }
+  }
+  return sorted_keys_.end();
+}
+
+void ProfileInfoCache::RegisterPrefs(PrefService* prefs) {
+  prefs->RegisterDictionaryPref(prefs::kProfileInfoCache);
+}