chrome/browser/pref_service_flags_storage.cc

   1 // Copyright 2013 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 #include "chrome/browser/pref_service_flags_storage.h"
   6
   7 #include "base/prefs/pref_service.h"
   8 #include "base/prefs/scoped_user_pref_update.h"
   9 #include "base/values.h"
  10 #include "chrome/common/pref_names.h"
  11
  12 namespace about_flags {
  13
  14 PrefServiceFlagsStorage::PrefServiceFlagsStorage(
  15     PrefService *prefs) : prefs_(prefs) {}
  16
  17 PrefServiceFlagsStorage::~PrefServiceFlagsStorage() {}
  18
  19 std::set<std::string> PrefServiceFlagsStorage::GetFlags() {
  20   const base::ListValue* enabled_experiments = prefs_->GetList(
  21       prefs::kEnabledLabsExperiments);
  22   std::set<std::string> flags;
  23   for (base::ListValue::const_iterator it = enabled_experiments->begin();
  24        it != enabled_experiments->end();
  25        ++it) {
  26     std::string experiment_name;
  27     if (!(*it)->GetAsString(&experiment_name)) {
  28       LOG(WARNING) << "Invalid entry in " << prefs::kEnabledLabsExperiments;
  29       continue;
  30     }
  31     flags.insert(experiment_name);
  32   }
  33   return flags;
  34 }
  35
  36 bool PrefServiceFlagsStorage::SetFlags(const std::set<std::string>& flags) {
  37   ListPrefUpdate update(prefs_, prefs::kEnabledLabsExperiments);
  38   base::ListValue* experiments_list = update.Get();
  39
  40   experiments_list->Clear();
  41   for (std::set<std::string>::const_iterator it = flags.begin();
  42        it != flags.end(); ++it) {
  43     experiments_list->Append(new base::StringValue(*it));
  44   }
  45
  46   return true;
  47 }
  48
  49 }  // namespace about_flags