/**

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  * General Public License Version 2 only ("GPL") or the Common

  * Development and Distribution License("CDDL") (collectively, the

  * "License"). You may not use this file except in compliance with the

  * License. You can obtain a copy of the License at

  * http://www.netbeans.org/cddl-gplv2.html

  * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

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  * particular file as subject to the "Classpath" exception as provided

  * by Oracle in the GPL Version 2 section of the License file that

  * accompanied this code. If applicable, add the following below the

  * License Header, with the fields enclosed by brackets [] replaced by

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  * Contributor(s):

  *

  * The Original Software is NetBeans. The Initial Developer of the Original

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 package org.netbeans.html.boot.fx;

 import java.util.concurrent.CountDownLatch;

 import java.util.concurrent.Executors;

 import javafx.application.Platform;

 import net.java.html.BrwsrCtx;

 import net.java.html.boot.BrowserBuilder;

 import net.java.html.js.JavaScriptBody;

 import org.apidesign.html.boot.spi.Fn;

 import static org.testng.Assert.*;

 import org.testng.annotations.Test;

 /**

  *

  * @author Jaroslav Tulach

  */

 public class ReloadTest {

     private static Runnable whenInitialized;

     public ReloadTest() {

     }

     @JavaScriptBody(args = { "a", "b"  }, body = "return a + b;")

     private static native int plus(int a, int b);

     @Test public void checkReload() throws Throwable {

         final Throwable[] arr = { null };

         final BrowserBuilder bb = BrowserBuilder.newBrowser().loadClass(ReloadTest.class).

                 loadPage("empty.html").

                 invoke("initialized");

         class ShowBrowser implements Runnable {

             @Override

             public void run() {

                 bb.showAndWait();

             }

         }

         class WhenInitialized implements Runnable {

             CountDownLatch cdl = new CountDownLatch(1);

             AbstractFXPresenter p;

             BrwsrCtx ctx;

             @Override

             public void run() {

                 try {

                     whenInitialized = null;

                     doCheckReload();

                     p = (AbstractFXPresenter) Fn.activePresenter();

                     assertNotNull(p, "Presenter is defined");

                     ctx = BrwsrCtx.findDefault(WhenInitialized.class);

                 } catch (Throwable ex) {

                     arr[0] = ex;

                 } finally {

                     cdl.countDown();

                 }

             }

         }

         WhenInitialized when = new WhenInitialized();

         whenInitialized = when;

         Executors.newSingleThreadExecutor().submit(new ShowBrowser());

         when.cdl.await();

         if (arr[0] != null) throw arr[0];

         class ReloadPage implements Runnable {

             final CountDownLatch cdl = new CountDownLatch(1);

             private final AbstractFXPresenter p;

             public ReloadPage(AbstractFXPresenter p) {

                 this.p = p;

             }

             @Override

             public void run() {

                 p.engine.reload();

                 cdl.countDown();

             }

         }

         ReloadPage relPage = new ReloadPage(when.p);

         class SecondInit implements Runnable {

             CountDownLatch cdl = new CountDownLatch(1);

             @Override

             public void run() {

                 try {

                     whenInitialized = null;

                     doCheckReload();

                 } catch (Throwable ex) {

                     arr[0] = ex;

                 } finally {

                     cdl.countDown();

                 }

             }

         }

         SecondInit second = new SecondInit();

         whenInitialized = second;

         Platform.runLater(relPage);

         second.cdl.await();

         if (arr[0] != null) throw arr[0];

     }

     final void doCheckReload() throws Exception {

         int res = plus(30, 12);

         assertEquals(res, 42, "Meaning of world computed");

     }

     public static synchronized void initialized() throws Exception {

         whenInitialized.run();

     }

 }