| // Copyright 2012 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. |
| |
| package org.chromium.chrome.browser; |
| |
| import org.chromium.base.CalledByNative; |
| |
| /** |
| * Watches for when Chrome is told to restart itself. |
| */ |
| public class ApplicationLifetime { |
| public interface Observer { |
| void onTerminate(boolean restart); |
| } |
| private static Observer sObserver = null; |
| |
| /** |
| * Sets the observer that monitors for ApplicationLifecycle events. |
| * We only allow one observer to be set to avoid race conditions for shutdown events. |
| */ |
| public static void setObserver(Observer observer) { |
| assert sObserver == null; |
| sObserver = observer; |
| } |
| |
| /** |
| * Removes whatever observer is currently watching this class. |
| */ |
| public static void removeObserver() { |
| sObserver = null; |
| } |
| |
| @CalledByNative |
| public static void terminate(boolean restart) { |
| if (sObserver != null) |
| sObserver.onTerminate(restart); |
| } |
| } |