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"));
}
}
}
// todo eliminate code duplication in BaseLogicalViewProjectPane
private <T extends TreeNode> T getSelectedTreeNode(Class<T> nodeClass) {
TreePath selectionPath = getTree().getSelectionPath();
if (selectionPath == null) return null;
Object selectedNode = selectionPath.getLastPathComponent();
if (!(nodeClass.isInstance(selectedNode))) return null;
return (T) selectedNode;
}
/*
* Recursive method which returns a count of the number of listeners in
* EventListener, handling the (common) case of l actually being an
* AWTEventMulticaster. Additionally, only listeners of type listenerType
* are counted. Method modified to fix bug 4513402. -bchristi
*/
private static int getListenerCount(EventListener l, Class listenerType) {
if (l instanceof AWTEventMulticaster) {
AWTEventMulticaster mc = (AWTEventMulticaster) l;
return getListenerCount(mc.a, listenerType) + getListenerCount(mc.b, listenerType);
} else {
// Only count listeners of correct type
return listenerType.isInstance(l) ? 1 : 0;
}
}
public <T> T getUserData(final Class<T> userDataClass) {
if (myUserData != null) {
for (Object o : myUserData) {
if (userDataClass.isInstance(o)) {
//noinspection unchecked
return (T) o;
}
}
}
return null;
}
/** Return the control based on a control type for the PlugIn. */
public Object getControl(String controlType) {
try {
Class cls = Class.forName(controlType);
Object cs[] = getControls();
for (int i = 0; i < cs.length; i++) {
if (cls.isInstance(cs[i])) return cs[i];
}
return null;
} catch (Exception e) { // no such controlType or such control
return null;
}
}
