Main.java Source code

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Here is the source code for Main.java

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/*
 * Copyright (c) 2011, Pro JavaFX Authors
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. Neither the name of JFXtras nor the names of its contributors may be used
 *    to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * Metronome1Main.fx - A simple example of animation using a Timeline
 *
 *  Developed 2011 by James L. Weaver jim.weaver [at] javafxpert.com
 *  as a JavaFX SDK 2.0 example for the Pro JavaFX book.
 */

import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.input.ClipboardContent;
import javafx.scene.input.DataFormat;
import javafx.scene.input.DragEvent;
import javafx.scene.input.Dragboard;
import javafx.scene.input.MouseEvent;
import javafx.scene.input.TransferMode;
import javafx.scene.paint.Color;
import javafx.scene.text.Text;
import javafx.stage.Stage;

public class Main extends Application {
    final Text source = new Text(50, 100, "DRAG ME");
    final Text target = new Text(150, 100, "DROP HERE");
    private static final DataFormat customFormat = new DataFormat("helloworld.custom");

    public static void main(String[] args) {
        Application.launch(args);
    }

    @Override
    public void start(Stage primaryStage) {
        Group root = new Group();
        Scene scene = new Scene(root, 300, 250);
        root.getChildren().addAll(source, target);

        source.setOnDragDetected(new EventHandler<MouseEvent>() {
            public void handle(MouseEvent event) {
                /* drag was detected, start a drag-and-drop gesture*/
                /* allow any transfer mode */
                Dragboard db = source.startDragAndDrop(TransferMode.ANY);

                /* Put a string on a dragboard */
                ClipboardContent content = new ClipboardContent();
                content.putString(source.getText());
                db.setContent(content);

                event.consume();
            }
        });
        target.setOnDragOver(new EventHandler<DragEvent>() {
            public void handle(DragEvent event) {
                /* data is dragged over the target */
                /* accept it only if it is not dragged from the same node 
                 * and if it has a string data */
                if (event.getGestureSource() != target && event.getDragboard().hasString()) {
                    /* allow for moving */
                    event.acceptTransferModes(TransferMode.MOVE);
                }

                event.consume();
            }
        });
        target.setOnDragEntered(new EventHandler<DragEvent>() {
            public void handle(DragEvent event) {
                /* the drag-and-drop gesture entered the target */
                /* show to the user that it is an actual gesture target */
                if (event.getGestureSource() != target && event.getDragboard().hasString()) {
                    target.setFill(Color.GREEN);
                }

                event.consume();
            }
        });
        target.setOnDragExited(new EventHandler<DragEvent>() {
            public void handle(DragEvent event) {
                /* mouse moved away, remove the graphical cues */
                target.setFill(Color.BLACK);

                event.consume();
            }
        });
        target.setOnDragDropped(new EventHandler<DragEvent>() {
            public void handle(DragEvent event) {
                /* data dropped */
                /* if there is a string data on dragboard, read it and use it */
                Dragboard db = event.getDragboard();
                boolean success = false;
                if (db.hasString()) {
                    target.setText(db.getString());
                    success = true;
                }
                /* let the source know whether the string was successfully 
                 * transferred and used */
                event.setDropCompleted(success);

                event.consume();
            }
        });
        source.setOnDragDone(new EventHandler<DragEvent>() {
            public void handle(DragEvent event) {
                /* the drag and drop gesture ended */
                /* if the data was successfully moved, clear it */
                if (event.getTransferMode() == TransferMode.MOVE) {
                    source.setText("");
                }
                event.consume();
            }
        });

        primaryStage.setScene(scene);
        primaryStage.show();
    }
}