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
  19 namespace extensions {
  20
  21 ExternalPolicyLoader::ExternalPolicyLoader(Profile* profile)
  22     : profile_(profile) {
  23   pref_change_registrar_.Init(profile_->GetPrefs());
  24   pref_change_registrar_.Add(prefs::kExtensionInstallForceList,
  25                              base::Bind(&ExternalPolicyLoader::StartLoading,
  26                                         base::Unretained(this)));
  27   pref_change_registrar_.Add(prefs::kExtensionAllowedTypes,
  28                              base::Bind(&ExternalPolicyLoader::StartLoading,
  29                                         base::Unretained(this)));
  30   notification_registrar_.Add(this,
  31                               chrome::NOTIFICATION_PROFILE_DESTROYED,
  32                               content::Source<Profile>(profile_));
  33 }
  34
  35 // static
  36 void ExternalPolicyLoader::AddExtension(base::DictionaryValue* dict,
  37                                         const std::string& extension_id,
  38                                         const std::string& update_url) {
  39   dict->SetString(base::StringPrintf("%s.%s", extension_id.c_str(),
  40                                      ExternalProviderImpl::kExternalUpdateUrl),
  41                   update_url);
  42 }
  43
  44 void ExternalPolicyLoader::Observe(
  45     int type,
  46     const content::NotificationSource& source,
  47     const content::NotificationDetails& details) {
  48   if (profile_ == NULL) return;
  49   DCHECK(type == chrome::NOTIFICATION_PROFILE_DESTROYED) <<
  50       "Unexpected notification type.";
  51   if (content::Source<Profile>(source).ptr() == profile_) {
  52     notification_registrar_.RemoveAll();
  53     pref_change_registrar_.RemoveAll();
  54     profile_ = NULL;
  55   }
  56 }
  57
  58 void ExternalPolicyLoader::StartLoading() {
  59   const DictionaryValue* forcelist =
  60       profile_->GetPrefs()->GetDictionary(prefs::kExtensionInstallForceList);
  61   prefs_.reset(forcelist ? forcelist->DeepCopy() : NULL);
  62   LoadFinished();
  63 }
  64
  65 }  // namespace extensions