01: /*
02: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
03: *
04: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
05: *
06: * The contents of this file are subject to the terms of either the GNU
07: * General Public License Version 2 only ("GPL") or the Common
08: * Development and Distribution License("CDDL") (collectively, the
09: * "License"). You may not use this file except in compliance with the
10: * License. You can obtain a copy of the License at
11: * http://www.netbeans.org/cddl-gplv2.html
12: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
13: * specific language governing permissions and limitations under the
14: * License. When distributing the software, include this License Header
15: * Notice in each file and include the License file at
16: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
17: * particular file as subject to the "Classpath" exception as provided
18: * by Sun in the GPL Version 2 section of the License file that
19: * accompanied this code. If applicable, add the following below the
20: * License Header, with the fields enclosed by brackets [] replaced by
21: * your own identifying information:
22: * "Portions Copyrighted [year] [name of copyright owner]"
23: *
24: * Contributor(s):
25: *
26: * The Original Software is NetBeans. The Initial Developer of the Original
27: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
28: * Microsystems, Inc. All Rights Reserved.
29: *
30: * If you wish your version of this file to be governed by only the CDDL
31: * or only the GPL Version 2, indicate your decision by adding
32: * "[Contributor] elects to include this software in this distribution
33: * under the [CDDL or GPL Version 2] license." If you do not indicate a
34: * single choice of license, a recipient has the option to distribute
35: * your version of this file under either the CDDL, the GPL Version 2 or
36: * to extend the choice of license to its licensees as provided above.
37: * However, if you add GPL Version 2 code and therefore, elected the GPL
38: * Version 2 license, then the option applies only if the new code is
39: * made subject to such option by the copyright holder.
40: */
41:
42: package org.openide;
43:
44: import org.openide.util.Lookup;
45:
46: /** Manages major aspects of the NetBeans lifecycle - currently saving all objects and exiting.
47: * @author Jesse Glick
48: * @since 3.14
49: */
50: public abstract class LifecycleManager {
51: /** Subclass constructor. */
52: protected LifecycleManager() {
53: }
54:
55: /**
56: * Get the default lifecycle manager.
57: * Normally this is found in {@link Lookup#getDefault} but if no instance is
58: * found there, a fallback instance is returned which behaves as follows:
59: * <ol>
60: * <li>{@link #saveAll} does nothing
61: * <li>{@link #exit} calls {@link System#exit} with an exit code of 0
62: * </ol>
63: * This is useful for unit tests and perhaps standalone library usage.
64: * @return the default instance (never null)
65: */
66: public static LifecycleManager getDefault() {
67: LifecycleManager lm = Lookup.getDefault().lookup(
68: LifecycleManager.class);
69:
70: if (lm == null) {
71: lm = new Trivial();
72: }
73:
74: return lm;
75: }
76:
77: /** Save all opened objects.
78: */
79: public abstract void saveAll();
80:
81: /** Exit NetBeans.
82: * This method will return only if {@link java.lang.System#exit} fails, or if at least one component of the
83: * system refuses to exit (because it cannot be properly shut down).
84: */
85: public abstract void exit();
86:
87: /** Fallback instance. */
88: private static final class Trivial extends LifecycleManager {
89: public Trivial() {
90: }
91:
92: public void exit() {
93: System.exit(0);
94: }
95:
96: public void saveAll() {
97: }
98: }
99: }
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