com.sun.javafx.fxml.ModuleHelper Maven / Gradle / Ivy
/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package com.sun.javafx.fxml;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.security.AccessController;
import java.security.PrivilegedAction;
public class ModuleHelper {
private static final Method getModuleMethod;
private static final Method getResourceAsStreamMethod;
private static final boolean verbose;
static {
@SuppressWarnings("removal")
boolean tmp = AccessController.doPrivileged((PrivilegedAction) () ->
Boolean.getBoolean("javafx.verbose"));
verbose = tmp;
if (verbose) {
System.err.println("" + ModuleHelper.class.getName() + " : ");
}
Method mGetModule = null;
Method mGetResourceAsStream = null;
try {
mGetModule = Class.class.getMethod("getModule");
Class moduleClass = mGetModule.getReturnType();
mGetResourceAsStream = moduleClass.getMethod("getResourceAsStream", String.class);
} catch (NoSuchMethodException e) {
// ignore
}
getModuleMethod = mGetModule;
getResourceAsStreamMethod = mGetResourceAsStream;
if (verbose) {
System.err.println("getModuleMethod = " + getModuleMethod);
System.err.println("getResourceAsStreamMethod = " + getResourceAsStreamMethod);
}
}
public static Object getModule(Class clazz) {
if (getModuleMethod != null) {
try {
return getModuleMethod.invoke(clazz);
} catch (IllegalAccessException | InvocationTargetException ex) {
throw new RuntimeException(ex);
}
}
return null;
}
// FIXME: JIGSAW -- remove this method if not needed
public static InputStream getResourceAsStream(Object thisModule, String name) {
if (getResourceAsStreamMethod != null) {
try {
return (InputStream)getResourceAsStreamMethod.invoke(thisModule, name);
} catch (IllegalAccessException | InvocationTargetException ex) {
throw new RuntimeException(ex);
}
}
return null;
}
public static Object invoke(Method m, Object obj, Object[] params)
throws InvocationTargetException, IllegalAccessException
{
Object thisModule = getModule(ModuleHelper.class);
Object methodModule = getModule(m.getDeclaringClass());
if (verbose) {
System.out.println("thisModule = " + thisModule);
System.out.println("methodModule = " + methodModule);
System.out.println("m = " + m);
}
if (methodModule != thisModule) {
return MethodHelper.invoke(m, obj, params);
} else {
return m.invoke(obj, params);
}
}
}