chrome/browser/extensions/external_policy_loader.cc

   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 #include "chrome/browser/extensions/external_policy_loader.h"
   6
   7 #include "base/bind.h"
   8 #include "base/logging.h"
   9 #include "base/prefs/pref_service.h"
  10 #include "base/strings/stringprintf.h"
  11 #include "base/values.h"
  12 #include "chrome/browser/chrome_notification_types.h"
  13 #include "chrome/browser/extensions/external_provider_impl.h"
  14 #include "chrome/browser/profiles/profile.h"
  15 #include "chrome/common/pref_names.h"
  16 #include "content/public/browser/notification_details.h"
  17 #include "content/public/browser/notification_source.h"
  18 #include "extensions/browser/pref_names.h"
  19
  20 namespace extensions {
  21
  22 ExternalPolicyLoader::ExternalPolicyLoader(Profile* profile)
  23     : profile_(profile) {
  24   pref_change_registrar_.Init(profile_->GetPrefs());
  25   pref_change_registrar_.Add(pref_names::kInstallForceList,
  26                              base::Bind(&ExternalPolicyLoader::StartLoading,
  27                                         base::Unretained(this)));
  28   pref_change_registrar_.Add(pref_names::kAllowedTypes,
  29                              base::Bind(&ExternalPolicyLoader::StartLoading,
  30                                         base::Unretained(this)));
  31   notification_registrar_.Add(this,
  32                               chrome::NOTIFICATION_PROFILE_DESTROYED,
  33                               content::Source<Profile>(profile_));
  34 }
  35
  36 // static
  37 void ExternalPolicyLoader::AddExtension(base::DictionaryValue* dict,
  38                                         const std::string& extension_id,
  39                                         const std::string& update_url) {
  40   dict->SetString(base::StringPrintf("%s.%s", extension_id.c_str(),
  41                                      ExternalProviderImpl::kExternalUpdateUrl),
  42                   update_url);
  43 }
  44
  45 void ExternalPolicyLoader::Observe(
  46     int type,
  47     const content::NotificationSource& source,
  48     const content::NotificationDetails& details) {
  49   if (profile_ == NULL) return;
  50   DCHECK(type == chrome::NOTIFICATION_PROFILE_DESTROYED) <<
  51       "Unexpected notification type.";
  52   if (content::Source<Profile>(source).ptr() == profile_) {
  53     notification_registrar_.RemoveAll();
  54     pref_change_registrar_.RemoveAll();
  55     profile_ = NULL;
  56   }
  57 }
  58
  59 void ExternalPolicyLoader::StartLoading() {
  60   const base::DictionaryValue* forcelist =
  61       profile_->GetPrefs()->GetDictionary(pref_names::kInstallForceList);
  62   prefs_.reset(forcelist ? forcelist->DeepCopy() : NULL);
  63   LoadFinished();
  64 }
  65
  66 }  // namespace extensions