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/**
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* Back 2 Browser Bytecode Translator
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* Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. Look for COPYING file in the top folder.
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* If not, see http://opensource.org/licenses/GPL-2.0.
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*/
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package org.apidesign.bck2brwsr.launcher.impl;
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import java.util.List;
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import java.util.TooManyListenersException;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import javafx.application.Application;
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import javafx.application.Platform;
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import javafx.beans.value.ChangeListener;
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import javafx.beans.value.ObservableValue;
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import javafx.event.ActionEvent;
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import javafx.event.EventHandler;
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import javafx.geometry.HPos;
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import javafx.geometry.Insets;
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import javafx.geometry.Pos;
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import javafx.geometry.VPos;
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import javafx.scene.Node;
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import javafx.scene.Scene;
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import javafx.scene.control.Button;
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import javafx.scene.layout.ColumnConstraints;
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import javafx.scene.layout.GridPane;
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import javafx.scene.layout.Pane;
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import javafx.scene.layout.Priority;
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import javafx.scene.layout.VBox;
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import javafx.scene.text.Text;
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import javafx.scene.web.WebEngine;
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import javafx.scene.web.WebEvent;
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import javafx.scene.web.WebView;
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import javafx.stage.Modality;
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import javafx.stage.Stage;
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import netscape.javascript.JSObject;
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/**
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* Demonstrates a WebView object accessing a web page.
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*
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* @see javafx.scene.web.WebView
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* @see javafx.scene.web.WebEngine
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*/
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public class FXBrwsr extends Application {
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private static final Logger LOG = Logger.getLogger(FXBrwsr.class.getName());
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@Override
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public void start(Stage primaryStage) throws Exception {
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Pane root = new WebViewPane(getParameters().getUnnamed());
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primaryStage.setScene(new Scene(root, 1024, 768));
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primaryStage.show();
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}
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/**
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* Create a resizable WebView pane
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*/
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private class WebViewPane extends Pane {
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private final JVMBridge bridge = new JVMBridge();
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public WebViewPane(List<String> params) {
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VBox.setVgrow(this, Priority.ALWAYS);
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setMaxWidth(Double.MAX_VALUE);
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setMaxHeight(Double.MAX_VALUE);
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WebView view = new WebView();
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view.setMinSize(500, 400);
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view.setPrefSize(500, 400);
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final WebEngine eng = view.getEngine();
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LOG.log(Level.FINE, "params : {0}", params);
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try {
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JVMBridge.addBck2BrwsrLoad(new InitBck2Brwsr(eng));
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} catch (TooManyListenersException ex) {
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LOG.log(Level.SEVERE, null, ex);
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}
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if (params.size() > 0) {
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LOG.log(Level.FINE, "loading page {0}", params.get(0));
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eng.load(params.get(0));
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LOG.fine("done loading page ");
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}
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eng.setOnAlert(new EventHandler<WebEvent<String>>() {
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@Override
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public void handle(WebEvent<String> t) {
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final Stage dialogStage = new Stage();
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dialogStage.initModality(Modality.WINDOW_MODAL);
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dialogStage.setTitle("Warning");
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final Button button = new Button("Close");
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final Text text = new Text(t.getData());
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VBox box = new VBox();
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box.setAlignment(Pos.CENTER);
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box.setSpacing(10);
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box.setPadding(new Insets(10));
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box.getChildren().addAll(text, button);
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dialogStage.setScene(new Scene(box));
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button.setCancelButton(true);
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button.setOnAction(new EventHandler<ActionEvent>() {
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@Override
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public void handle(ActionEvent t) {
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dialogStage.close();
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}
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});
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dialogStage.centerOnScreen();
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dialogStage.showAndWait();
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}
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});
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GridPane grid = new GridPane();
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grid.setVgap(5);
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grid.setHgap(5);
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GridPane.setConstraints(view, 0, 1, 2, 1, HPos.CENTER, VPos.CENTER, Priority.ALWAYS, Priority.ALWAYS);
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grid.getColumnConstraints().addAll(new ColumnConstraints(100, 100, Double.MAX_VALUE, Priority.ALWAYS, HPos.CENTER, true), new ColumnConstraints(40, 40, 40, Priority.NEVER, HPos.CENTER, true));
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grid.getChildren().addAll(view);
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getChildren().add(grid);
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}
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boolean initBck2Brwsr(WebEngine webEngine) {
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JSObject jsobj = (JSObject) webEngine.executeScript("window");
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LOG.log(Level.FINE, "window: {0}", jsobj);
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Object prev = jsobj.getMember("bck2brwsr");
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if ("undefined".equals(prev)) {
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System.getProperties().put("webEngine", webEngine);
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jsobj.setMember("bck2brwsr", bridge);
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return true;
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}
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return false;
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}
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@Override
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protected void layoutChildren() {
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List<Node> managed = getManagedChildren();
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double width = getWidth();
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double height = getHeight();
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double top = getInsets().getTop();
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double right = getInsets().getRight();
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double left = getInsets().getLeft();
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double bottom = getInsets().getBottom();
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for (int i = 0; i < managed.size(); i++) {
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Node child = managed.get(i);
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layoutInArea(child, left, top, width - left - right, height - top - bottom, 0, Insets.EMPTY, true, true, HPos.CENTER, VPos.CENTER);
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}
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}
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private class InitBck2Brwsr implements ChangeListener<Void>, Runnable {
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private final WebEngine eng;
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public InitBck2Brwsr(WebEngine eng) {
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this.eng = eng;
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}
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@Override
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public synchronized void changed(ObservableValue<? extends Void> ov, Void t, Void t1) {
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Platform.runLater(this);
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try {
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wait();
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} catch (InterruptedException ex) {
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LOG.log(Level.SEVERE, null, ex);
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}
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}
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@Override
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public synchronized void run() {
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initBck2Brwsr(eng);
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notifyAll();
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}
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}
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}
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}
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