1 /* 2 * Copyright (c) 2010, 2017, 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 * @key headful 27 * @bug 6938813 28 * @summary Swing mutable statics 29 * @author Pavel Porvatov 30 * @modules java.desktop/javax.swing.text.html.parser:open 31 * @modules java.desktop/sun.awt 32 */ 33 34 import sun.awt.AppContext; 35 import sun.awt.SunToolkit; 36 37 import javax.swing.text.html.HTMLEditorKit; 38 import javax.swing.text.html.StyleSheet; 39 import javax.swing.text.html.parser.DTD; 40 import javax.swing.text.html.parser.ParserDelegator; 41 import java.lang.reflect.Field; 42 43 public class bug6938813 { 44 public static final String DTD_KEY = "dtd_key"; 45 46 private static volatile StyleSheet styleSheet; 47 48 public static void main(String[] args) throws Exception { 49 // Run validation and init values for this AppContext 50 validate(); 51 52 Thread thread = new ThreadInAnotherAppContext(); 53 54 thread.start(); 55 thread.join(); 56 } 57 58 private static void validate() throws Exception { 59 AppContext appContext = AppContext.getAppContext(); 60 61 assertTrue(DTD.getDTD(DTD_KEY).getName().equals(DTD_KEY), "DTD.getDTD() mixed AppContexts"); 62 63 // Spoil hash value 64 DTD invalidDtd = DTD.getDTD("invalid DTD"); 65 66 DTD.putDTDHash(DTD_KEY, invalidDtd); 67 68 assertTrue(DTD.getDTD(DTD_KEY) == invalidDtd, "Something wrong with DTD.getDTD()"); 69 70 Object dtdKey = getParserDelegator_DTD_KEY(); 71 72 assertTrue(appContext.get(dtdKey) == null, "ParserDelegator mixed AppContexts"); 73 74 // Init default DTD 75 new ParserDelegator(); 76 77 Object dtdValue = appContext.get(dtdKey); 78 79 assertTrue(dtdValue != null, "ParserDelegator.defaultDTD isn't initialized"); 80 81 // Try reinit default DTD 82 new ParserDelegator(); 83 84 assertTrue(dtdValue == appContext.get(dtdKey), "ParserDelegator.defaultDTD created a duplicate"); 85 86 HTMLEditorKit htmlEditorKit = new HTMLEditorKit(); 87 88 if (styleSheet == null) { 89 // First AppContext 90 styleSheet = htmlEditorKit.getStyleSheet(); 91 92 assertTrue(styleSheet != null, "htmlEditorKit.getStyleSheet() returns null"); 93 assertTrue(htmlEditorKit.getStyleSheet() == styleSheet, "Something wrong with htmlEditorKit.getStyleSheet()"); 94 } else { 95 assertTrue(htmlEditorKit.getStyleSheet() != styleSheet, "HtmlEditorKit.getStyleSheet() mixed AppContexts"); 96 } 97 } 98 99 private static void assertTrue(boolean b, String msg) { 100 if (!b) { 101 throw new RuntimeException("Test failed: " + msg); 102 } 103 } 104 105 private static Object getParserDelegator_DTD_KEY() throws Exception { 106 Field field = ParserDelegator.class.getDeclaredField("DTD_KEY"); 107 108 field.setAccessible(true); 109 110 return field.get(null); 111 } 112 113 private static class ThreadInAnotherAppContext extends Thread { 114 public ThreadInAnotherAppContext() { 115 super(new ThreadGroup("6938813"), "ThreadInAnotherAppContext"); 116 } 117 118 public void run() { 119 SunToolkit.createNewAppContext(); 120 121 try { 122 validate(); 123 } catch (Exception e) { 124 throw new RuntimeException(e); 125 } 126 } 127 } 128 }