/*//from ww w. jav a2 s.c o m * 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(); } }
The code above generates the following result.