DnD Move does not work on OS-X

[Tom Schindl]

Hi,

I must be doing something completely wrong or there is a major bug in
JavaFX-DnD from Java-8 upwards to JavaFX-14-ea.

If you run the attached application on OS-X the and press the CMD-key
while dragging you get null for the getTransferMode() inside DragOver
and you don't get a DragDropped and null on the DragDone.

I tracked that back to View#notifyDragOver() where one gets 0 from the
native side. So am I missing something in my code?

I also tried with
https://docs.oracle.com/javafx/2/drag_drop/jfxpub-drag_drop.htm and it
does not work either.

So I guess it's a major bug in openjfx but before filing a jira-ticket I
wanted to make extra sure it's not a stupid mistake, my german operating
system, ...

Tom

-- 
Tom Schindl, CTO
BestSolution.at EDV Systemhaus GmbH
Salurnerstrasse 15. A-6020 Innsbruck
Reg. Nr. FN 222302s am Firmenbuchgericht Innsbruck
-------------- next part --------------
package bla;

import java.util.UUID;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.input.ClipboardContent;
import javafx.scene.input.Dragboard;
import javafx.scene.input.TransferMode;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class SampleApp extends Application {

	@Override
	public void start(Stage primaryStage) throws Exception {
		
		HBox b = new HBox(50);
		
		Rectangle sourceR = new Rectangle(300, 300);
		sourceR.setOnDragDetected( evt -> {
			Dragboard dragboard = sourceR.startDragAndDrop(TransferMode.ANY);
			
			ClipboardContent content = new ClipboardContent();
	        content.putString(UUID.randomUUID().toString());
	        dragboard.setContent(content);
	        
	        evt.consume();
		});
		sourceR.setOnDragDone( evt -> System.err.println("Done: " + evt.getTransferMode()));
		sourceR.setFill(Color.RED);
		
		Rectangle targetR = new Rectangle(300, 300);
		targetR.setOnDragOver( evt -> {
			evt.acceptTransferModes(TransferMode.ANY);
			System.err.println(evt.getTransferMode());
			evt.consume();
		});
		targetR.setOnDragDropped( evt -> {
			System.err.println("Completed: " + evt.getTransferMode());
			evt.setDropCompleted(true);
			evt.consume();
		});
		targetR.setFill(Color.BLUE);
		
		b.getChildren().setAll(sourceR, targetR);
		
		Scene s = new Scene(new VBox(b), 800, 600);
		primaryStage.setScene(s);
		primaryStage.show();
		
	}

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