1 /* 2 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 6938813 27 * @summary Swing mutable statics 28 * @author Pavel Porvatov 29 */ 30 31 import sun.awt.AppContext; 32 import sun.awt.SunToolkit; 33 34 import javax.swing.text.html.HTMLEditorKit; 35 import javax.swing.text.html.StyleSheet; 36 import javax.swing.text.html.parser.DTD; 37 import javax.swing.text.html.parser.ParserDelegator; 38 import java.lang.reflect.Field; 39 40 public class bug6938813 { 41 public static final String DTD_KEY = "dtd_key"; 42 43 private static volatile StyleSheet styleSheet; 44 45 public static void main(String[] args) throws Exception { 46 // Run validation and init values for this AppContext 47 validate(); 48 49 Thread thread = new ThreadInAnotherAppContext(); 50 51 thread.start(); 52 thread.join(); 53 } 54 55 private static void validate() throws Exception { 56 AppContext appContext = AppContext.getAppContext(); 57 58 assertTrue(DTD.getDTD(DTD_KEY).getName().equals(DTD_KEY), "DTD.getDTD() mixed AppContexts"); 59 60 // Spoil hash value 61 DTD invalidDtd = DTD.getDTD("invalid DTD"); 62 63 DTD.putDTDHash(DTD_KEY, invalidDtd); 64 65 assertTrue(DTD.getDTD(DTD_KEY) == invalidDtd, "Something wrong with DTD.getDTD()"); 66 67 Object dtdKey = getParserDelegator_DTD_KEY(); 68 69 assertTrue(appContext.get(dtdKey) == null, "ParserDelegator mixed AppContexts"); 70 71 // Init default DTD 72 new ParserDelegator(); 73 74 Object dtdValue = appContext.get(dtdKey); 75 76 assertTrue(dtdValue != null, "ParserDelegator.defaultDTD isn't initialized"); 77 78 // Try reinit default DTD 79 new ParserDelegator(); 80 81 assertTrue(dtdValue == appContext.get(dtdKey), "ParserDelegator.defaultDTD created a duplicate"); 82 83 HTMLEditorKit htmlEditorKit = new HTMLEditorKit(); 84 85 if (styleSheet == null) { 86 // First AppContext 87 styleSheet = htmlEditorKit.getStyleSheet(); 88 89 assertTrue(styleSheet != null, "htmlEditorKit.getStyleSheet() returns null"); 90 assertTrue(htmlEditorKit.getStyleSheet() == styleSheet, "Something wrong with htmlEditorKit.getStyleSheet()"); 91 } else { 92 assertTrue(htmlEditorKit.getStyleSheet() != styleSheet, "HtmlEditorKit.getStyleSheet() mixed AppContexts"); 93 } 94 } 95 96 private static void assertTrue(boolean b, String msg) { 97 if (!b) { 98 throw new RuntimeException("Test failed: " + msg); 99 } 100 } 101 102 private static Object getParserDelegator_DTD_KEY() throws Exception { 103 Field field = ParserDelegator.class.getDeclaredField("DTD_KEY"); 104 105 field.setAccessible(true); 106 107 return field.get(null); 108 } 109 110 private static class ThreadInAnotherAppContext extends Thread { 111 public ThreadInAnotherAppContext() { 112 super(new ThreadGroup("6938813"), "ThreadInAnotherAppContext"); 113 } 114 115 public void run() { 116 SunToolkit.createNewAppContext(); 117 118 try { 119 validate(); 120 } catch (Exception e) { 121 throw new RuntimeException(e); 122 } 123 } 124 } 125 }