chrome/browser/chromeos/settings/shutdown_policy_handler.cc

   1 // Copyright (c) 2014 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/chromeos/settings/shutdown_policy_handler.h"
   6
   7 #include "base/bind.h"
   8 #include "base/callback.h"
   9 #include "chromeos/settings/cros_settings_names.h"
  10 #include "chromeos/settings/cros_settings_provider.h"
  11
  12 namespace chromeos {
  13
  14 ShutdownPolicyHandler::ShutdownPolicyHandler(CrosSettings* cros_settings,
  15                                              Delegate* delegate)
  16     : cros_settings_(cros_settings), delegate_(delegate), weak_factory_(this) {
  17   if (delegate_) {
  18     shutdown_policy_subscription_ = cros_settings_->AddSettingsObserver(
  19         kRebootOnShutdown,
  20         base::Bind(&ShutdownPolicyHandler::OnShutdownPolicyChanged,
  21                    weak_factory_.GetWeakPtr()));
  22   }
  23 }
  24
  25 ShutdownPolicyHandler::~ShutdownPolicyHandler() {}
  26
  27 void ShutdownPolicyHandler::Shutdown() {
  28   shutdown_policy_subscription_.reset();
  29   delegate_ = nullptr;
  30 }
  31
  32 void ShutdownPolicyHandler::CallDelegate(bool reboot_on_shutdown) {
  33   if (delegate_)
  34     delegate_->OnShutdownPolicyChanged(reboot_on_shutdown);
  35 }
  36
  37 void ShutdownPolicyHandler::OnShutdownPolicyChanged() {
  38   CheckIfRebootOnShutdown(base::Bind(&ShutdownPolicyHandler::CallDelegate,
  39                           weak_factory_.GetWeakPtr()));
  40 }
  41
  42 void ShutdownPolicyHandler::CheckIfRebootOnShutdown(
  43     const RebootOnShutdownCallback& callback) {
  44   CrosSettingsProvider::TrustedStatus status =
  45       cros_settings_->PrepareTrustedValues(
  46           base::Bind(&ShutdownPolicyHandler::CheckIfRebootOnShutdown,
  47                      weak_factory_.GetWeakPtr(), callback));
  48   if (status != CrosSettingsProvider::TRUSTED)
  49     return;
  50
  51   // Get the updated policy.
  52   bool reboot_on_shutdown = false;
  53   cros_settings_->GetBoolean(kRebootOnShutdown, &reboot_on_shutdown);
  54   callback.Run(reboot_on_shutdown);
  55 }
  56
  57 }  // namespace chromeos