rt/launcher/src/main/java/org/apidesign/bck2brwsr/launcher/WebViewLauncher.java
author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
Wed, 20 Mar 2013 06:56:44 +0100
branchfx
changeset 853 39166e462f8d
parent 845 859804c78010
child 855 b11992f928c7
permissions -rw-r--r--
There is a way for the JavaScript to tell the Java wrapper it is running: alert. Initialize bck2brwsr callback in alert handler.
     1 /**
     2  * Back 2 Browser Bytecode Translator
     3  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
     4  *
     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.
     8  *
     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.
    13  *
    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.
    17  */
    18 package org.apidesign.bck2brwsr.launcher;
    19 
    20 import org.apidesign.bck2brwsr.launcher.impl.FXBrwsr;
    21 import java.io.IOException;
    22 import java.lang.reflect.Method;
    23 import java.net.URI;
    24 import java.net.URL;
    25 import java.net.URLClassLoader;
    26 
    27 import java.util.concurrent.Executors;
    28 import java.util.logging.Level;
    29 import java.util.logging.Logger;
    30 import javafx.application.Platform;
    31 import org.apidesign.bck2brwsr.launcher.impl.JVMBridge;
    32 import org.apidesign.vm4brwsr.Bck2Brwsr;
    33 
    34 /**
    35  *
    36  * @author Jaroslav Tulach <jtulach@netbeans.org>
    37  */
    38 final class WebViewLauncher extends Bck2BrwsrLauncher {
    39     private static final Logger LOG = Logger.getLogger(WebViewLauncher.class.getName());
    40     static {
    41         try {
    42             Method m = URLClassLoader.class.getDeclaredMethod("addURL", URL.class);
    43             m.setAccessible(true);
    44             URL l = new URL("file://" + System.getProperty("java.home") + "/lib/jfxrt.jar");
    45             LOG.log(Level.INFO, "url : {0}", l);
    46             m.invoke(ClassLoader.getSystemClassLoader(), l);
    47         } catch (Exception ex) {
    48             throw new LinkageError("Can't add jfxrt.jar on the classpath", ex);
    49         }
    50     }
    51     
    52     public WebViewLauncher() {
    53         super(null);
    54     }
    55 
    56     @Override
    57     protected Object[] showBrwsr(final URI url) throws IOException {
    58         try {
    59             JVMBridge.registerClassLoaders(loaders());
    60             Executors.newSingleThreadExecutor().submit(new Runnable() {
    61                 @Override
    62                 public void run() {
    63                     FXBrwsr.launch(FXBrwsr.class, url.toString());
    64                 }
    65             });
    66         } catch (Throwable ex) {
    67             LOG.log(Level.WARNING, "Can't open WebView", ex);
    68         }
    69         return null;
    70     }
    71     
    72     @Override
    73     void generateBck2BrwsrJS(StringBuilder sb, Bck2Brwsr.Resources loader) throws IOException {
    74         sb.append("(function() {\n"
    75             + "  alert('bck2brwsr');\n"
    76             + "  var impl = this.bck2brwsr;\n"
    77             + "  this.bck2brwsr = function() { return impl; };\n"
    78             + "})(window);\n"
    79         );
    80     }
    81     
    82     
    83     
    84     @Override
    85     public void close() throws IOException {
    86         Platform.exit();
    87     }
    88     
    89 }