1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.log4j.chainsaw;
18
19 import org.apache.log4j.chainsaw.help.HelpManager;
20
21 import javax.swing.*;
22 import java.awt.event.ActionEvent;
23
24
25 /**
26 * @author psmith
27 */
28 class CommonActions {
29 private static CommonActions instance = null;
30 private static Action SHOW_RELEASE_NOTE;
31
32
33 private void initActions() {
34 SHOW_RELEASE_NOTE = new AbstractAction("Release Notes") {
35
36 public void actionPerformed(ActionEvent e) {
37 HelpManager.getInstance().setHelpURL(ChainsawConstants.RELEASE_NOTES_URL);
38
39 }
40 };
41 }
42
43 static synchronized CommonActions getInstance() {
44 if (instance == null) {
45 instance = new CommonActions();
46 }
47 return instance;
48 }
49
50 /**
51 *
52 */
53 private CommonActions() {
54 initActions();
55 }
56
57 /**
58 * @return
59 */
60 public Action getShowReleaseNotes() {
61 return SHOW_RELEASE_NOTE;
62 }
63
64 }