ash/session/session_state_observer.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 "ash/session/session_state_observer.h"
   6
   7 #include "ash/session/session_state_delegate.h"
   8 #include "ash/shell.h"
   9
  10 namespace ash {
  11
  12 ScopedSessionStateObserver::ScopedSessionStateObserver(
  13     ash::SessionStateObserver* observer)
  14     : observer_(observer) {
  15   ash::Shell::GetInstance()->session_state_delegate()->AddSessionStateObserver(
  16       observer_);
  17 }
  18
  19 ScopedSessionStateObserver::~ScopedSessionStateObserver() {
  20   ash::Shell::GetInstance()
  21       ->session_state_delegate()
  22       ->RemoveSessionStateObserver(observer_);
  23 }
  24
  25 }  // namespace ash