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 java.io.Reader;
21 import org.apidesign.html.boot.spi.Fn;
23 import java.util.ArrayList;
24 import java.util.Arrays;
25 import java.util.Collection;
26 import java.util.List;
27 import java.util.TooManyListenersException;
28 import javafx.beans.value.ChangeListener;
29 import javafx.scene.web.WebEngine;
30 import netscape.javascript.JSObject;
31 import org.apidesign.html.boot.impl.FindResources;
32 import org.apidesign.html.boot.impl.FnUtils;
36 * @author Jaroslav Tulach <jtulach@netbeans.org>
38 public final class JVMBridge {
39 private final WebEngine engine;
40 private final ClassLoader cl;
42 private static ClassLoader[] ldrs;
43 private static ChangeListener<Void> onBck2BrwsrLoad;
45 JVMBridge(WebEngine eng) {
47 final ClassLoader p = JVMBridge.class.getClassLoader().getParent();
48 WebClassLoader wcl = new WebClassLoader();
49 this.cl = FnUtils.newLoader(wcl, wcl, p);
52 public static void registerClassLoaders(ClassLoader[] loaders) {
53 ldrs = loaders.clone();
56 public static void addBck2BrwsrLoad(ChangeListener<Void> l) throws TooManyListenersException {
57 if (onBck2BrwsrLoad != null) {
58 throw new TooManyListenersException();
63 public static void onBck2BrwsrLoad() {
64 ChangeListener<Void> l = onBck2BrwsrLoad;
66 l.changed(null, null, null);
70 public Class<?> loadClass(String name) throws ClassNotFoundException {
71 return Class.forName(name, true, cl);
74 private final class WebClassLoader implements FindResources, Fn.Presenter {
76 public void findResources(String name, Collection<? super URL> results, boolean oneIsEnough) {
77 if (ldrs != null) for (ClassLoader l : ldrs) {
78 URL u = l.getResource(name);
86 public Fn defineFn(String code, String... names) {
87 StringBuilder sb = new StringBuilder();
88 sb.append("(function() {");
89 sb.append(" return function(");
91 for (String n : names) {
92 sb.append(sep).append(n);
100 JSObject x = (JSObject) engine.executeScript(sb.toString());
105 public void displayPage(URL page, Runnable onPageLoad) {
106 throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
110 public void loadScript(Reader code) throws Exception {
111 throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
115 private static final class JSFn extends Fn {
116 private final JSObject fn;
118 public JSFn(JSObject fn) {
123 public Object invoke(Object thiz, Object... args) throws Exception {
125 List<Object> all = new ArrayList<Object>(args.length + 1);
126 all.add(thiz == null ? fn : thiz);
127 all.addAll(Arrays.asList(args));
128 Object ret = fn.call("call", all.toArray()); // NOI18N
129 return ret == fn ? null : ret;
133 } catch (Exception t) {