package bugs;

import javafx.application.Platform;  
import javafx.beans.property.SimpleStringProperty;  
import javafx.beans.property.StringProperty;  
import javafx.embed.swing.JFXPanel;  
import javafx.event.EventHandler;  
import javafx.scene.Scene;  
import javafx.scene.control.Label;  
import javafx.scene.control.TextField;  
import javafx.scene.input.ClipboardContent;  
import javafx.scene.input.DragEvent;  
import javafx.scene.input.Dragboard;  
import javafx.scene.input.MouseEvent;  
import javafx.scene.input.TransferMode;  
import javafx.scene.layout.VBox;  
import javax.swing.JFrame;  
import javax.swing.JPanel;  
import javax.swing.SwingUtilities;  
public class JFXPanelDnD {  
     
    private final StringProperty draggingContent ;  
    public JFXPanelDnD() {  
        draggingContent = new SimpleStringProperty();  
    }  
     
    private void initAndShowGUI() {  
        // Execute on EDT thread  
        final JFrame frame = new JFrame("DnD Between JFX Panels");  
        final JFXPanel leftPanel = new JFXPanel();  
        final JFXPanel rightPanel = new JFXPanel();  
        final JPanel panel = new JPanel();  
        panel.add(leftPanel);  
        panel.add(rightPanel);  
        frame.add(panel);  
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  
        frame.setSize(420, 320);  
        frame.setLocationRelativeTo(null);  
        frame.setVisible(true);  
        Platform.runLater(new Runnable() {  
           @Override  
           public void run() {  
               configureLeftPanel(leftPanel);  
               configureRightPanel(rightPanel);  
           }  
        });  
    }  
     
    private void configureLeftPanel(JFXPanel panel) {  
        // Execute on JavaFX Application thread  
        final TextField textField = new TextField();  
        final VBox root = new VBox();  
         
        root.setOnDragDetected(new EventHandler<MouseEvent>() {  
            @Override  
            public void handle(MouseEvent event) {  
                System.out.println("Drag detected");  
                Dragboard db = root.startDragAndDrop(TransferMode.ANY);  
                System.out.println(db);  
                ClipboardContent content = new ClipboardContent();  
                content.putString(textField.getText());  
                db.setContent(content);  
                 
                draggingContent.set(textField.getText());  
                 
                event.consume();  
            }  
        });  
         
        root.setOnDragDone(new EventHandler<DragEvent>() {  
            @Override  
            public void handle(DragEvent event) {  
                draggingContent.set(null);  
            }  
        });  
         
        root.getChildren().add(textField);  
        Scene scene = new Scene(root, 200, 300);  
        panel.setScene(scene);  
    }  
     
    private void configureRightPanel(JFXPanel panel) {  
        final Label label = new Label("Text");  
        final VBox root = new VBox();  
         
        root.setOnDragOver(new EventHandler<DragEvent>() {  
            @Override  
            public void handle(DragEvent event) {  
                 
                final Dragboard dragboard = event.getDragboard();  
                System.out.println(dragboard);  
//                if (dragboard.hasString()) {  
//                    event.acceptTransferModes(TransferMode.COPY);  
//                } else {  
//                    System.out.println("No string content");  
//                }  
                if (draggingContent.get() != null) {  
                    event.acceptTransferModes(TransferMode.COPY);  
                }  
            }  
        });  
         
        root.setOnDragDropped(new EventHandler<DragEvent>(){  
            @Override  
            public void handle(DragEvent event) {  
//                Dragboard db = event.getDragboard() ;  
//                if (db.hasString()) {  
//                    label.setText(db.getString());  
//                    event.setDropCompleted(true);  
//                } else {  
//                    event.setDropCompleted(false);  
//                }  
                if (draggingContent.get()==null) {  
                    event.setDropCompleted(false);  
                } else {  
                    label.setText(draggingContent.get());  
                    event.setDropCompleted(true);  
                }  
                event.consume();  
            }  
        });  
         
        root.getChildren().add(label);  
        Scene scene = new Scene(root, 200, 300);  
        panel.setScene(scene);  
    }  
     
    public static void main(String[] args) {  
        final JFXPanelDnD test = new JFXPanelDnD();  
        SwingUtilities.invokeLater(new Runnable() {  
            @Override  
            public void run() {  
                test.initAndShowGUI();  
            }  
        });  
    }  
}