// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ash/display/shutdown_observer_chromeos.h"

#include "ash/common/wm_shell.h"
#include "ui/display/manager/chromeos/display_configurator.h"

namespace ash {

ShutdownObserver::ShutdownObserver(
    display::DisplayConfigurator* display_configurator)
    : display_configurator_(display_configurator) {
  WmShell::Get()->AddShellObserver(this);
}

ShutdownObserver::~ShutdownObserver() {
  WmShell::Get()->RemoveShellObserver(this);
}

void ShutdownObserver::OnAppTerminating() {
  // Stop handling display configuration events once the shutdown
  // process starts. crbug.com/177014.
  display_configurator_->PrepareForExit();
}

}  // namespace ash