package bugs;

import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.concurrent.CountDownLatch;

import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;

import javafx.application.*;
import javafx.event.*;
import javafx.scene.*;
import javafx.stage.*;
import javafx.scene.control.*;
import javafx.scene.layout.HBox;

public class RT16014 extends Application {
    @Override
    public void start(Stage stage) {
        final Group group = new Group();
        final Button button = new Button("Deadlock" + 0);
        button.setLayoutX(2 * (0 * 10 + 5) + 25);
        button.setLayoutY(2 * (0 * 10 + 5) + 25);
        button.addEventHandler(ActionEvent.ACTION,
            new EventHandler<ActionEvent>() {
                public void handle(ActionEvent event) {
                    deadLock();
                }
            });
        group.getChildren().add(button);
        Scene scene = new Scene(group);
        stage.setScene(scene);
        stage.show();
    }
    
    void deadLock() {
        final boolean useFx = true;
        Thread th = new Thread () {
            public void run () {
                try {
                    //System.out.println("Do some work in non-UI thread before prompting.");
                    Thread.sleep (100);
                } catch (InterruptedException e) {
                }
                boolean result = useFx ? createStageFX() : createStageSwing();
                System.out.println("Got " + result + " in non-UI thread.");
            }
        };
        th.start();
        //if (true) return;
        try {
            System.out.println("*** Waiting in UI thread for join() ...");
            th.join();
        } catch (InterruptedException e) {
            System.out.println("UI thread interrupted");
        }
    }
    
    boolean createStageSwing () {
        final boolean [] result = new boolean [1];
        final CountDownLatch latch = new CountDownLatch(1);
        SwingUtilities.invokeLater(new Runnable () {
            public void run () {
                System.out.println("\tWaiting in UI thread for answer ...");
                result [0] = JOptionPane.YES_OPTION == JOptionPane.showConfirmDialog(null,  "Java would like to run mixed code and format your hard drive", "Mixed Code Warning",  JOptionPane.OK_CANCEL_OPTION);
                System.out.println("\tGot " + result [0] + " in UI thread.");
                latch.countDown();
            }
        });
        try {
            latch.await();
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
        }
        return result [0];
    }
    
    boolean createStageFX () {
        final boolean [] result = new boolean [1];
        final CountDownLatch latch = new CountDownLatch(1);
        Runnable work = new Runnable () {
            public void run() {
                final Stage stage2 = new Stage();
                final HBox hBox = new HBox();
                final Button okButton = new Button("Ok");
                okButton.setDefaultButton(true);
                final Button cancelButton = new Button("Cancel");
                Scene scene = new Scene(hBox);
                scene.addEventHandler(ActionEvent.ACTION,
                    new EventHandler<ActionEvent>() {
                        public void handle(ActionEvent event) {
                            stage2.close();
                            result [0] = event.getTarget() == okButton;
                        }
                    });
                stage2.setScene(scene);
                hBox.getChildren().addAll(okButton, cancelButton);
                //stage2.show();
                System.out.println("\tWaiting in UI thread for answer ...");
                stage2.impl_showAndWait();
                System.out.println("\tGot " + result [0] + " in UI thread.");
                latch.countDown();
            }
        };
        Platform.runLater(work);
        try {
            System.out.println("Waiting in non-UI thread for answer ...");
            latch.await();
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return result [0];
    }

    public static void main(String[] args) {
//        SwingUtilities.invokeLater(new Runnable () {
//            public void run () {}
//        });
//        AccessController.doPrivileged(new PrivilegedAction<Void>() {
//            public Void run() {
//                System.setProperty("javafx.macosx.embedded", "true");
//                return null;
//            }
//        });
        launch(args);
    }
}