2 * Back 2 Browser Bytecode Translator
3 * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. Look for COPYING file in the top folder.
16 * If not, see http://opensource.org/licenses/GPL-2.0.
18 package org.apidesign.bck2brwsr.launcher.fximpl;
20 import org.apidesign.html.boot.spi.Fn;
22 import java.util.ArrayList;
23 import java.util.Arrays;
24 import java.util.Collection;
25 import java.util.List;
26 import java.util.TooManyListenersException;
27 import javafx.beans.value.ChangeListener;
28 import javafx.scene.web.WebEngine;
29 import netscape.javascript.JSObject;
30 import org.apidesign.html.boot.impl.FindResources;
31 import org.apidesign.html.boot.impl.FnUtils;
35 * @author Jaroslav Tulach <jtulach@netbeans.org>
37 public final class JVMBridge {
38 private final WebEngine engine;
39 private final ClassLoader cl;
41 private static ClassLoader[] ldrs;
42 private static ChangeListener<Void> onBck2BrwsrLoad;
44 JVMBridge(WebEngine eng) {
46 final ClassLoader p = JVMBridge.class.getClassLoader().getParent();
47 WebClassLoader wcl = new WebClassLoader();
48 this.cl = FnUtils.newLoader(wcl, wcl, p);
51 public static void registerClassLoaders(ClassLoader[] loaders) {
52 ldrs = loaders.clone();
55 public static void addBck2BrwsrLoad(ChangeListener<Void> l) throws TooManyListenersException {
56 if (onBck2BrwsrLoad != null) {
57 throw new TooManyListenersException();
62 public static void onBck2BrwsrLoad() {
63 ChangeListener<Void> l = onBck2BrwsrLoad;
65 l.changed(null, null, null);
69 public Class<?> loadClass(String name) throws ClassNotFoundException {
70 return Class.forName(name, true, cl);
73 private final class WebClassLoader implements FindResources, Fn.Presenter {
75 public void findResources(String name, Collection<? super URL> results, boolean oneIsEnough) {
76 if (ldrs != null) for (ClassLoader l : ldrs) {
77 URL u = l.getResource(name);
85 public Fn defineFn(String code, String... names) {
86 StringBuilder sb = new StringBuilder();
87 sb.append("(function() {");
88 sb.append(" return function(");
90 for (String n : names) {
91 sb.append(sep).append(n);
99 JSObject x = (JSObject) engine.executeScript(sb.toString());
104 public void displayPage(URL page, Runnable onPageLoad) {
105 throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
109 private static final class JSFn extends Fn {
110 private final JSObject fn;
112 public JSFn(JSObject fn) {
117 public Object invoke(Object thiz, Object... args) throws Exception {
119 List<Object> all = new ArrayList<Object>(args.length + 1);
120 all.add(thiz == null ? fn : thiz);
121 all.addAll(Arrays.asList(args));
122 Object ret = fn.call("call", all.toArray()); // NOI18N
123 return ret == fn ? null : ret;
127 } catch (Exception t) {