private static void netxsurgery() throws Exception {
/* Force off NetX codebase classloading. */
Class<?> nxc;
try {
nxc = Class.forName("net.sourceforge.jnlp.runtime.JNLPClassLoader");
} catch (ClassNotFoundException e1) {
try {
nxc = Class.forName("netx.jnlp.runtime.JNLPClassLoader");
} catch (ClassNotFoundException e2) {
throw (new Exception("No known NetX on classpath"));
}
}
ClassLoader cl = MainFrame.class.getClassLoader();
if (!nxc.isInstance(cl)) {
throw (new Exception("Not running from a NetX classloader"));
}
Field cblf, lf;
try {
cblf = nxc.getDeclaredField("codeBaseLoader");
lf = nxc.getDeclaredField("loaders");
} catch (NoSuchFieldException e) {
throw (new Exception("JNLPClassLoader does not conform to its known structure"));
}
cblf.setAccessible(true);
lf.setAccessible(true);
Set<Object> loaders = new HashSet<Object>();
Stack<Object> open = new Stack<Object>();
open.push(cl);
while (!open.empty()) {
Object cur = open.pop();
if (loaders.contains(cur)) continue;
loaders.add(cur);
Object curl;
try {
curl = lf.get(cur);
} catch (IllegalAccessException e) {
throw (new Exception("Reflection accessibility not available even though set"));
}
for (int i = 0; i < Array.getLength(curl); i++) {
Object other = Array.get(curl, i);
if (nxc.isInstance(other)) open.push(other);
}
}
for (Object cur : loaders) {
try {
cblf.set(cur, null);
} catch (IllegalAccessException e) {
throw (new Exception("Reflection accessibility not available even though set"));
}
}
}
private static void cleanupSwingDataStructures() throws Exception {
Class<?> aClass = Class.forName("javax.swing.KeyboardManager");
Method get = aClass.getMethod("getCurrentManager");
get.setAccessible(true);
Object manager = get.invoke(null);
{
Field mapF = aClass.getDeclaredField("componentKeyStrokeMap");
mapF.setAccessible(true);
Object map = mapF.get(manager);
((Map) map).clear();
}
{
Field mapF = aClass.getDeclaredField("containerMap");
mapF.setAccessible(true);
Object map = mapF.get(manager);
((Map) map).clear();
}
}
public static Field makeAccessible(Class<?> target, String fieldName) {
try {
final Field field = target.getDeclaredField(fieldName);
return (Field)
AccessController.doPrivileged(
new PrivilegedExceptionAction<Object>() {
public Object run() throws IllegalAccessException, InvocationTargetException {
if (!field.isAccessible()) field.setAccessible(true);
return field;
}
});
} catch (NoSuchFieldException | PrivilegedActionException e) {
System.out.print("");
} // keep quiet IError.printStackTrace(e); }
return null;
}
protected static void checkAllTimersAreDisposed() {
try {
Class<?> aClass = Class.forName("javax.swing.TimerQueue");
Method inst = aClass.getDeclaredMethod("sharedInstance");
inst.setAccessible(true);
Object queue = inst.invoke(null);
Field field = aClass.getDeclaredField("firstTimer");
field.setAccessible(true);
Object firstTimer = field.get(queue);
if (firstTimer != null) {
try {
fail("Not disposed Timer: " + firstTimer.toString() + "; queue:" + queue);
} finally {
field.set(queue, null);
}
}
} catch (Throwable e) {
// Ignore
}
}
