@FXML
void dragOver(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() != imageView && event.getDragboard().hasString()) {
/* allow for both copying and moving, whatever user chooses */
event.acceptTransferModes(TransferMode.COPY_OR_MOVE);
}
event.consume();
}
@FXML
void dragEntered(DragEvent event) {
/* the drag-and-drop gesture entered the target */
/* show to the user that it is an actual gesture target */
if (event.getGestureSource() != imageView && event.getDragboard().hasString()) {
ColorAdjust colorAdjust = new ColorAdjust();
colorAdjust.setBrightness(0.5);
imageView.setEffect(colorAdjust);
}
event.consume();
}