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/*
* @test
* @bug 6938813
* @summary Swing mutable statics
* @author Pavel Porvatov
*/
import sun.awt.AppContext;
import sun.awt.SunToolkit;
import javax.swing.text.html.HTMLEditorKit;
import javax.swing.text.html.StyleSheet;
import javax.swing.text.html.parser.DTD;
import javax.swing.text.html.parser.ParserDelegator;
import java.lang.reflect.Field;
public class bug6938813 {
public static final String DTD_KEY = "dtd_key";
private static volatile StyleSheet styleSheet;
public static void main(String[] args) throws Exception {
// Run validation and init values for this AppContext
validate();
Thread thread = new ThreadInAnotherAppContext();
thread.start();
thread.join();
}
private static void validate() throws Exception {
AppContext appContext = AppContext.getAppContext();
assertTrue(DTD.getDTD(DTD_KEY).getName().equals(DTD_KEY), "DTD.getDTD() mixed AppContexts");
// Spoil hash value
DTD invalidDtd = DTD.getDTD("invalid DTD");
DTD.putDTDHash(DTD_KEY, invalidDtd);
assertTrue(DTD.getDTD(DTD_KEY) == invalidDtd, "Something wrong with DTD.getDTD()");
Object dtdKey = getParserDelegator_DTD_KEY();
assertTrue(appContext.get(dtdKey) == null, "ParserDelegator mixed AppContexts");
// Init default DTD
new ParserDelegator();
Object dtdValue = appContext.get(dtdKey);
assertTrue(dtdValue != null, "ParserDelegator.defaultDTD isn't initialized");
// Try reinit default DTD
new ParserDelegator();
assertTrue(dtdValue == appContext.get(dtdKey), "ParserDelegator.defaultDTD created a duplicate");
HTMLEditorKit htmlEditorKit = new HTMLEditorKit();
if (styleSheet == null) {
// First AppContext
styleSheet = htmlEditorKit.getStyleSheet();
assertTrue(styleSheet != null, "htmlEditorKit.getStyleSheet() returns null");
assertTrue(htmlEditorKit.getStyleSheet() == styleSheet, "Something wrong with htmlEditorKit.getStyleSheet()");
} else {
assertTrue(htmlEditorKit.getStyleSheet() != styleSheet, "HtmlEditorKit.getStyleSheet() mixed AppContexts");
}
}
private static void assertTrue(boolean b, String msg) {
if (!b) {
throw new RuntimeException("Test failed: " + msg);
}
}
private static Object getParserDelegator_DTD_KEY() throws Exception {
Field field = ParserDelegator.class.getDeclaredField("DTD_KEY");
field.setAccessible(true);
return field.get(null);
}
private static class ThreadInAnotherAppContext extends Thread {
public ThreadInAnotherAppContext() {
super(new ThreadGroup("6938813"), "ThreadInAnotherAppContext");
}
public void run() {
SunToolkit.createNewAppContext();
try {
validate();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
}