private EventHandler<DragEvent> createOnDragDroppedHandler()
{
	return new EventHandler<DragEvent>() 
   	{
   		public void handle(DragEvent pEvent)
   		{
   			Dragboard db = pEvent.getDragboard();
   			boolean success = false;
   			if(db.hasString()) 
   			{
   				CardTransfer transfer = new CardTransfer(pEvent.getDragboard().getString());
   				GameModel.instance().getCardMove(transfer.getTop(), aIndex).perform();
   				success = true;
   			}
   			pEvent.setDropCompleted(success);
   			pEvent.consume();
   		}
   	};
}
 

/**
 * Drag-n-drop support (drop consumer)
 * */
@FXML
private void handleDrop(DragEvent event){
    List<File> filesDropped = event.getDragboard().getFiles();

    if (getSelectedProtocol().equals("TinFoil") && MediatorControl.getInstance().getContoller().getSettingsCtrlr().getTfXciNszXczSupport())
        filesDropped.removeIf(file -> ! file.getName().toLowerCase().matches("(.*\\.nsp$)|(.*\\.xci$)|(.*\\.nsz$)|(.*\\.xcz$)"));
    else if (getSelectedProtocol().equals("GoldLeaf") && (! MediatorControl.getInstance().getContoller().getSettingsCtrlr().getNSPFileFilterForGL()))
        filesDropped.removeIf(file -> (file.isDirectory() && ! file.getName().toLowerCase().matches(".*\\.nsp$")));
    else
        filesDropped.removeIf(file -> ! file.getName().toLowerCase().matches(".*\\.nsp$"));

    if ( ! filesDropped.isEmpty() )
        tableFilesListController.setFiles(filesDropped);

    event.setDropCompleted(true);
    event.consume();
}
 

private EventHandler<DragEvent> createDragDroppedHandler(final ImageView pImageView, final Card pCard)
{
	return new EventHandler<DragEvent>() 
	{
		@Override
		public void handle(DragEvent pEvent)
		{
			Dragboard db = pEvent.getDragboard();
			boolean success = false;
			if(db.hasString()) 
			{
				GameModel.instance().getCardMove(new CardTransfer(db.getString()).getTop(), aIndex).perform(); 
				success = true;
			}

			pEvent.setDropCompleted(success);

			pEvent.consume();
		}
	};
}
 

/**
 * @param event The {@link DragEvent} containing the dragged data.
 * @param selection_tracker Used to get the grid steps from its model to be
 *            used in offsetting multiple widgets.
 * @param widgets The container of the created widgets.
 */
private static void installWidgetsFromString (
    final DragEvent event,
    final SelectedWidgetUITracker selection_tracker,
    final List<Widget> widgets
) {

    final Dragboard db = event.getDragboard();
    final String xmlOrText = db.getString();

    try {
        widgets.addAll(ModelReader.parseXML(xmlOrText).getChildren());
    } catch ( Exception ex ) {
        installWidgetsFromString(event, xmlOrText, selection_tracker, widgets);
    }

}
 

/** Handle that this tab was dragged elsewhere, or drag aborted */
private void handleDragDone(final DragEvent event)
{
    final DockItem item = dragged_item.getAndSet(null);
    if (item != null  &&  !event.isDropCompleted())
    {
        // Would like to position new stage where the mouse was released,
        // but event.getX(), getSceneX(), getScreenX() are all 0.0.
        // --> Using MouseInfo, which is actually AWT code
        final Stage other = item.detach();
        final PointerInfo pi = MouseInfo.getPointerInfo();
        if (pi != null)
        {
            final Point loc = pi.getLocation();
            other.setX(loc.getX());
            other.setY(loc.getY());
        }
    }
    event.consume();
}
 

private void processDragEnteredEvent(DragEvent evt) {
    MediaEntry media = null;
    if (evt.getDragboard().hasFiles()) {
        media = MediaCache.getMediaFromFile(getDraggedFile(evt.getDragboard().getFiles()));
    } else if (evt.getDragboard().hasUrl()) {
        media = MediaCache.getMediaFromUrl(evt.getDragboard().getUrl());
    } else if (evt.getDragboard().hasString()) {
        String path = evt.getDragboard().getString();
        try {
            URI.create(path);
            media = MediaCache.getMediaFromUrl(path);
        } catch (IllegalArgumentException ex) {
            File f = new File(path);
            if (f.exists()) {
                media = MediaCache.getMediaFromFile(f);
            }
        }
    }
    if (media != null) {
        evt.acceptTransferModes(TransferMode.LINK, TransferMode.COPY);
        startDragEvent(media);
    }
}
 

/**
 * Handle drag over.
 */
@FxThread
private void dragOver(@NotNull DragEvent dragEvent) {

    var dragboard = dragEvent.getDragboard();
    var files = ClassUtils.<List<File>>unsafeCast(dragboard.getContent(DataFormat.FILES));

    if (files == null || files.size() != 1) {
        return;
    }

    var file = files.get(0);
    if (!canAccept(file)) {
        return;
    }

    var transferModes = dragboard.getTransferModes();
    var isCopy = transferModes.contains(TransferMode.COPY);

    dragEvent.acceptTransferModes(isCopy ? TransferMode.COPY : TransferMode.MOVE);
    dragEvent.consume();
}
 

/**
 * Handle drag over events.
 *
 * @param dragEvent the drag over event.
 */
@FxThread
private void handleDragOverEvent(@NotNull DragEvent dragEvent) {

    var dragboard = dragEvent.getDragboard();
    var files = EditorUtil.getFiles(dragboard);
    if (files.size() != 1) {
        return;
    }

    var file = files.get(0);

    if (!file.getName().endsWith(FileExtensions.JME_MATERIAL)) {
        return;
    }

    var transferModes = dragboard.getTransferModes();
    var isCopy = transferModes.contains(TransferMode.COPY);

    dragEvent.acceptTransferModes(isCopy ? TransferMode.COPY : TransferMode.MOVE);
    dragEvent.consume();
}
 

private EventHandler<DragEvent> createDragEnteredHandler(final ImageView pImageView, final Card pCard)
{
	return new EventHandler<DragEvent>()
	{
		@Override
		public void handle(DragEvent pEvent)
		{
			CardTransfer transfer = new CardTransfer(pEvent.getDragboard().getString());
			if( GameModel.instance().isLegalMove(transfer.getTop(), aIndex) )
			{
				pImageView.setEffect(new DropShadow());
			}
			pEvent.consume();
		}
	};
}
 

private EventHandler<DragEvent> createOnDragOverHandler(final ImageView pView)
{
	return new EventHandler<DragEvent>()
   	{
   	    public void handle(DragEvent pEvent) 
   	    {
   	    	if(pEvent.getGestureSource() != pView && pEvent.getDragboard().hasString())
   	    	{
   	    		CardTransfer transfer = new CardTransfer(pEvent.getDragboard().getString());
   	    		if( transfer.size() == 1 && GameModel.instance().isLegalMove(transfer.getTop(), aIndex) )
   	    		{
   	    			pEvent.acceptTransferModes(TransferMode.MOVE);
   	    		}
   	    	}

   	    	pEvent.consume();
   	    }
   	};
}
 

/**
 * Drag-n-drop support (drop consumer)
 * */
@FXML
private void handleDrop(DragEvent event){
    Node sourceNode = (Node) event.getSource();
    File fileDrpd = event.getDragboard().getFiles().get(0);

    if (fileDrpd.isDirectory()){
        event.setDropCompleted(true);
        event.consume();
        return;
    }

    String fileNameDrpd = fileDrpd.getAbsolutePath();

    switch (sourceNode.getId()){
        case "plHbox1":
            setPayloadFile( 1, fileNameDrpd);
            break;
        case "plHbox2":
            setPayloadFile( 2, fileNameDrpd);
            break;
        case "plHbox3":
            setPayloadFile( 3, fileNameDrpd);
            break;
        case "plHbox4":
            setPayloadFile( 4, fileNameDrpd);
            break;
        case "plHbox5":
            setPayloadFile( 5, fileNameDrpd);
    }
    event.setDropCompleted(true);
    event.consume();
}
 

/**
 * Drag-n-drop support (dragOver consumer)
 * */
@FXML
private void handleDragOver(DragEvent event){
    if (event.getDragboard().hasFiles() && ! MediatorControl.getInstance().getTransferActive())
        event.acceptTransferModes(TransferMode.ANY);
    event.consume();
}
 

/**
 * Drag-n-drop support (dragOver consumer)
 * */
@FXML
private void handleDragOver(DragEvent event){
    if (event.getDragboard().hasFiles() && ! MediatorControl.getInstance().getTransferActive())
        event.acceptTransferModes(TransferMode.ANY);
    event.consume();
}
 

/**
 * The method activateSetOnDragOver controlling what happens when something is dragged over.
 * Implemented activateSetOnDragOver to accept when files are dragged over it.
 * @param event - DragEvent
 */
public static void activateSetOnDragOver(DragEvent event){
  Dragboard dragBoard = event.getDragboard();
  if (dragBoard.hasFiles()) {
    event.acceptTransferModes(TransferMode.COPY);
  } else {
    event.consume();
  }
}
 

/**
 * The method activateSetOnDragDropped controlling what happens when something is dropped on window.
 * Implemented activateSetOnDragDropped to select the module according to the dropped file type and open dropped file
 * @param event - DragEvent
 */

public static void activateSetOnDragDropped(DragEvent event){
  Dragboard dragboard = event.getDragboard();
  boolean hasFileDropped = false;
  if (dragboard.hasFiles()) {
    hasFileDropped = true;
    for (File selectedFile:dragboard.getFiles()) {

      final String extension = FilenameUtils.getExtension(selectedFile.getName());
      String[] rawDataFile = {"cdf","nc","mzData","mzML","mzXML","raw"};
      final Boolean isRawDataFile = Arrays.asList(rawDataFile).contains(extension);
      final Boolean isMZmineProject = extension.equals("mzmine");

      Class<? extends MZmineRunnableModule> moduleJavaClass = null;
      if(isMZmineProject)
      {
        moduleJavaClass = ProjectLoadModule.class;
      } else if(isRawDataFile){
        moduleJavaClass = RawDataImportModule.class;
      }

      if(moduleJavaClass != null){
        ParameterSet moduleParameters =
                MZmineCore.getConfiguration().getModuleParameters(moduleJavaClass);
        if(isMZmineProject){
          moduleParameters.getParameter(projectFile).setValue(selectedFile);
        } else if (isRawDataFile){
          File fileArray[] = { selectedFile };
          moduleParameters.getParameter(fileNames).setValue(fileArray);
        }
        ParameterSet parametersCopy = moduleParameters.cloneParameterSet();
        MZmineCore.runMZmineModule(moduleJavaClass, parametersCopy);
      }
    }
  }
  event.setDropCompleted(hasFileDropped);
  event.consume();
}
 

private void onDragDropped(DragEvent e) {
	Dragboard db = e.getDragboard();
	if (db.hasContent(CLIPBOARD_DATAFORMAT)) {
		// this treecell receives a foreign drop
		// get content and insert into this tag, before this tag or after this tag
		// and remove dropped tag from old location

		// we also don't want to do anything if the tag is dropped onto itself or if the target is invalid
		if (getTreeItem() != null && dragboardContent != getTreeItem() && dropTarget != null) {
			((NBTTreeItem) dropTarget).moveHere(dropIndex, (NBTTreeItem) dragboardContent, getTreeView());
		}
		dragboardContent = null;
	}
}
 

private void onDragDone(DragEvent e) {
	Dragboard db = e.getDragboard();
	if (db.hasContent(CLIPBOARD_DATAFORMAT)) {
		dragboardContent = null;
	}

	if (dropTargetCell != null) {
		dropTargetCell.setInsertCssClass("drop-target", null);
	}
	setInsertParentCss(false);
}
 

/** Accept dock items */
private void handleDragOver(final DragEvent event)
{
    if (!isFixed()  &&
        DockItem.dragged_item.get() != null)
        event.acceptTransferModes(TransferMode.MOVE);
    event.consume();
}
 

/** Highlight while 'drop' is possible */
private void handleDragEntered(final DragEvent event)
{
    if (!isFixed()  &&
        DockItem.dragged_item.get() != null)
        setBorder(DockItem.DROP_ZONE_BORDER);
    event.consume();
}
 

/** Highlight while 'drop' is possible */
private void handleDragEntered(final DragEvent event)
{
    // Drop not possible into a 'fixed' pane
    if (getDockPane().isFixed())
        return;

    final DockItem item = dragged_item.get();
    if (item != null  &&  item != this)
    {
        name_tab.setBorder(DROP_ZONE_BORDER);
        name_tab.setTextFill(Color.GREEN);
    }
    event.consume();
}
 

/** Remove Highlight */
private void handleDragExited(final DragEvent event)
{
    name_tab.setBorder(Border.EMPTY);
    name_tab.setTextFill(Color.BLACK);
    event.consume();
}
 

protected void handleDrop(DragEvent event) {
    Dragboard db = event.getDragboard();
    if(db.hasContent(DataFormat.PLAIN_TEXT)) {
    	String val = (String) db.getContent(DataFormat.PLAIN_TEXT);
    	((TextField)event.getSource()).setText(val);
    	event.consume();
    }
}
 

private void onDragDrop(DragEvent e) {
	// Load drag-drop files
	if(e.getDragboard().hasFiles()) {
		File file = e.getDragboard().getFiles().get(0);
		controller.loadWorkspace(IOUtil.toPath(file), null);
	}
}
 

private Consumer<DragEvent> onDragDropped() {
    return (DragEvent e) -> {
        e.getDragboard().getFiles().stream().filter(f -> fileType.matches(f.getName())).findFirst()
                .ifPresent(file -> setTextFromFile(file));
        e.setDropCompleted(true);
    };
}
 

private Consumer<DragEvent> onDragDropped(Function<List<File>, ? extends BaseFilesDroppedEvent> provider) {
    return (DragEvent e) -> {
        eventStudio().broadcast(activeteModule(id));
        eventStudio().broadcast(provider.apply(e.getDragboard().getFiles()));
        e.setDropCompleted(true);
    };
}
 

private EventHandler<DragEvent> createDragExitedHandler(final ImageView pImageView, final Card pCard)
{
	return new EventHandler<DragEvent>()
	{
		@Override
		public void handle(DragEvent pEvent)
		{
			pImageView.setEffect(null);
			pEvent.consume();
		}
	};
}
 

/**
 * Apply a new material from an asset tree.
 *
 * @param dragEvent the drag event.
 * @param file      the file.
 */
@FxThread
private void applyMaterial(@NotNull final DragEvent dragEvent, @NotNull final Path file) {

    final Path assetFile = notNull(getAssetFile(file), "Not found asset file for " + file);
    final String assetPath = toAssetPath(assetFile);

    final MA editor3DState = getEditor3DPart();
    final MaterialKey materialKey = new MaterialKey(assetPath);
    final Camera camera = editor3DState.getCamera();

    final BorderPane area = get3DArea();
    final Point2D areaPoint = area.sceneToLocal(dragEvent.getSceneX(), dragEvent.getSceneY());

    EXECUTOR_MANAGER.addJmeTask(() -> {

        final Geometry geometry = editor3DState.getGeometryByScreenPos((float) areaPoint.getX(),
                camera.getHeight() - (float) areaPoint.getY());

        if (geometry == null) return;
        final Object linkNode = findParent(geometry, AssetLinkNode.class::isInstance);
        if (linkNode != null) return;

        final AssetManager assetManager = EditorUtil.getAssetManager();
        final Material material = assetManager.loadAsset(materialKey);

        final PropertyOperation<ChangeConsumer, Geometry, Material> operation =
                new PropertyOperation<>(geometry, Messages.MODEL_PROPERTY_MATERIAL, material, geometry.getMaterial());

        operation.setApplyHandler(Geometry::setMaterial);

        execute(operation);
    });
}
 

@Override
@FxThread
protected void handleDragDroppedEvent(@NotNull final DragEvent dragEvent) {
    super.handleDragDroppedEvent(dragEvent);
    UiUtils.handleDroppedFile(dragEvent, FileExtensions.TEXTURE_EXTENSIONS, this,
            dragEvent, this::applyTexture);
}
 

public void onDragOverLinkFile(DragEvent event){
    Dragboard db = event.getDragboard();
    if (db.hasFiles()) {
        event.acceptTransferModes(TransferMode.LINK);
    } else {
        event.consume();
    }
}
 

public void onDragDroppedHandleFiles(DragEvent event){
    Dragboard db = event.getDragboard();
    boolean success = false;
    if (db.hasFiles()) {
        success = true;
        for (File file : db.getFiles()) {
            showManifest(file);
            break;
        }
    }
    event.setDropCompleted(success);
    event.consume();
}