java.awt.dnd.DragSource Java Examples

public DraggableButton(final Action action) {
    super(action);

    addMouseListener(new MouseAdapter() {
        @Override
        public void mousePressed(final MouseEvent event) {
            getTransferHandler().exportAsDrag(DraggableButton.this, event, TransferHandler.COPY);
        }
    });
    t = new TransferHandler("graph") {
        @Override
        public Transferable createTransferable(final JComponent c) {
            return new StringSelection("graphSelection");
        }
    };

    setTransferHandler(t);
    source = new DragSource();
    source.createDefaultDragGestureRecognizer(this, DnDConstants.ACTION_COPY, this);
}
 

@Override
public <T extends DragGestureRecognizer> T
    createDragGestureRecognizer(Class<T> abstractRecognizerClass,
                                DragSource ds, Component c, int srcActions,
                                DragGestureListener dgl)
{
    final LightweightFrame f = SunToolkit.getLightweightFrame(c);
    if (f != null) {
        return f.createDragGestureRecognizer(abstractRecognizerClass, ds, c, srcActions, dgl);
    }

    if (MouseDragGestureRecognizer.class.equals(abstractRecognizerClass))
        return (T)new WMouseDragGestureRecognizer(ds, c, srcActions, dgl);
    else
        return null;
}
 

ImageDragSource() {
    formats = retrieveFormatsToTest();
    passedArray = new boolean[formats.length];
    final DragSourceListener dsl = new DragSourceAdapter() {
        public void dragDropEnd(DragSourceDropEvent e) {
            System.err.println("Drop was successful=" + e.getDropSuccess());
            notifyTransferSuccess(e.getDropSuccess());
            if (++fi < formats.length) {
                leaveFormat(formats[fi]);
            }
        }
    };

    new DragSource().createDefaultDragGestureRecognizer(frame,
            DnDConstants.ACTION_COPY,
            dge -> dge.startDrag(null, new ImageSelection(image), dsl));
    leaveFormat(formats[fi]);
}
 

public void start() {
    Frame f = new Frame("Use keyboard for DnD change");
    Panel mainPanel;
    Component dragSource, dropTarget;

    f.setBounds(0, 400, 200, 200);
    f.setLayout(new BorderLayout());

    mainPanel = new Panel();
    mainPanel.setLayout(new BorderLayout());

    mainPanel.setBackground(Color.blue);

    dropTarget = new DnDTarget(Color.red, Color.yellow);
    dragSource = new DnDSource("Drag ME! (" + (DragSource.isDragImageSupported()?"with ":"without") + " image)" );

    mainPanel.add(dragSource, "North");
    mainPanel.add(dropTarget, "Center");
    f.add(mainPanel, BorderLayout.CENTER);

    f.setVisible(true);
}
 

public void start() {
    Frame f = new Frame("Use keyboard for DnD change");
    Panel mainPanel;
    Component dragSource, dropTarget;

    f.setBounds(0, 400, 200, 200);
    f.setLayout(new BorderLayout());

    mainPanel = new Panel();
    mainPanel.setLayout(new BorderLayout());

    mainPanel.setBackground(Color.blue);

    dropTarget = new DnDTarget(Color.red, Color.yellow);
    dragSource = new DnDSource("Drag ME! (" + (DragSource.isDragImageSupported()?"with ":"without") + " image)" );

    mainPanel.add(dragSource, "North");
    mainPanel.add(dropTarget, "Center");
    f.add(mainPanel, BorderLayout.CENTER);

    f.setVisible(true);
}
 

@Override
public void dragGestureRecognized(DragGestureEvent event) {
	// only allow dragging with left mouse button
	if (event.getTriggerEvent().getModifiers() != InputEvent.BUTTON1_MASK) {
		return;
	}

	// change cursor to drag move
	Cursor cursor = null;
	if (event.getDragAction() == DnDConstants.ACTION_COPY) {
		cursor = DragSource.DefaultCopyDrop;
	}

	// set the repository entry as the Transferable
	TransferableRepositoryEntry transferable = new TransferableRepositoryEntry(location);
	if (usageLogger != null) {
		transferable.setUsageStatsLogger(usageLogger);
	} else if (usageObject != null) {
		transferable.setUsageObject(usageObject);
	}
	event.startDrag(cursor, transferable);
}
 

private boolean triggerDrag(JFrame f, Point p, DragGestureEvent dge,
		JComponent c) {
	Rectangle r = new Rectangle(0, 0, c.getWidth(), c.getHeight());
	r = SwingUtilities.convertRectangle(c, r, f);

	if (r.contains(p)) {
		draggingFromToolbar = true;
		draggingDefaults = false;
		draggingComponent = c.getName();
		MockComponent mc = new MockComponent(c);
		Transferable transferable = new MockComponentTransferable(mc);
		BufferedImage bi = mc.getBufferedImage();
		dge.startDrag(DragSource.DefaultMoveDrop, bi, new Point(r.x
				- p.x, r.y - p.y), transferable, dragSourceListener);
		return true;
	}
	return false;
}
 

@Override
public void mouseDragged(MouseEvent e)
{
	if (SwingUtilities.isLeftMouseButton(e) && dragStartPoint != null)
	{
		Point point = e.getPoint();
		if (draggingComponent != null)
		{
			drag(point);
		}
		else if (point.distance(dragStartPoint) > DragSource.getDragThreshold())
		{
			startDragging(point);
		}
	}
}
 

public void start() {
    Frame f = new Frame("Use keyboard for DnD change");
    Panel mainPanel;
    Component dragSource, dropTarget;

    f.setBounds(0, 400, 200, 200);
    f.setLayout(new BorderLayout());

    mainPanel = new Panel();
    mainPanel.setLayout(new BorderLayout());

    mainPanel.setBackground(Color.blue);

    dropTarget = new DnDTarget(Color.red, Color.yellow);
    dragSource = new DnDSource("Drag ME! (" + (DragSource.isDragImageSupported()?"with ":"without") + " image)" );

    mainPanel.add(dragSource, "North");
    mainPanel.add(dropTarget, "Center");
    f.add(mainPanel, BorderLayout.CENTER);

    f.setVisible(true);
}
 

@Override
public <T extends DragGestureRecognizer> T
    createDragGestureRecognizer(Class<T> abstractRecognizerClass,
                                DragSource ds, Component c, int srcActions,
                                DragGestureListener dgl)
{
    final LightweightFrame f = SunToolkit.getLightweightFrame(c);
    if (f != null) {
        return f.createDragGestureRecognizer(abstractRecognizerClass, ds, c, srcActions, dgl);
    }

    if (MouseDragGestureRecognizer.class.equals(abstractRecognizerClass))
        return (T)new WMouseDragGestureRecognizer(ds, c, srcActions, dgl);
    else
        return null;
}
 

ImageDragSource() {
    formats = retrieveFormatsToTest();
    passedArray = new boolean[formats.length];
    final DragSourceListener dsl = new DragSourceAdapter() {
        public void dragDropEnd(DragSourceDropEvent e) {
            System.err.println("Drop was successful=" + e.getDropSuccess());
            notifyTransferSuccess(e.getDropSuccess());
            if (++fi < formats.length) {
                leaveFormat(formats[fi]);
            }
        }
    };

    new DragSource().createDefaultDragGestureRecognizer(frame,
            DnDConstants.ACTION_COPY,
            dge -> dge.startDrag(null, new ImageSelection(image), dsl));
    leaveFormat(formats[fi]);
}
 

public <T extends DragGestureRecognizer> T createDragGestureRecognizer(
        Class<T> abstractRecognizerClass,
        DragSource ds, Component c, int srcActions,
        DragGestureListener dgl)
{
    return content == null ? null : content.createDragGestureRecognizer(
            abstractRecognizerClass, ds, c, srcActions, dgl);
}
 

@Override
public void dragGestureRecognized(DragGestureEvent event) {
    mDropReceived = false;
    int   dragAction = event.getDragAction();
    Point where      = new Point(event.getDragOrigin());
    switch (checkAndConvertToArea(where)) {
    case CONTENT:
        if (!mIgnoreNextDragGesture && mDragColumnDivider == -1 && !mSelectedRows.isEmpty() && (dragAction & mAllowedRowDragTypes) != 0) {
            TreeRowSelection selection = new TreeRowSelection(getSelectedRows(), mOpenRows);
            if (DragSource.isDragImageSupported()) {
                Img       dragImage = createDragImage(where);
                Point     imageOffset;
                Rectangle dragClip  = getDragClip();
                imageOffset = dragClip != null ? new Point(dragClip.x - where.x, dragClip.y - where.y) : new Point();
                event.startDrag(null, dragImage, imageOffset, selection, this);
            } else {
                event.startDrag(null, selection, this);
            }
        }
        break;
    case HEADER:
        if (mAllowColumnDrag && dragAction == DnDConstants.ACTION_MOVE && mSortColumn != null) {
            setSourceDragColumn(mSortColumn);
            if (DragSource.isDragImageSupported()) {
                event.startDrag(null, createColumnDragImage(mSortColumn), new Point(-(where.x - getColumnStart(mSortColumn)), -where.y), mSortColumn, this);
            } else {
                event.startDrag(null, mSortColumn, this);
            }
        }
        mSortColumn = null;
        break;
    default:
        break;
    }
}
 

public void dragEnter(DragSourceDragEvent dsde) {
	if ((dsde.getDropAction() & DnDConstants.ACTION_MOVE) == DnDConstants.ACTION_MOVE) {
		dsde.getDragSourceContext().setCursor(DragSource.DefaultLinkDrop);
	} else {
		dsde.getDragSourceContext().setCursor(DragSource.DefaultLinkNoDrop);
	}
}
 

public static void main(String[] args) throws Exception {
    Frame sourceFrame = createFrame("Source Frame", 0, 0);
    Frame targetFrame = createFrame("Target Frame", 250, 250);

    DragSource defaultDragSource
            = DragSource.getDefaultDragSource();
    defaultDragSource.createDefaultDragGestureRecognizer(sourceFrame,
            DnDConstants.ACTION_COPY_OR_MOVE,
            new TestDragGestureListener());
    new DropTarget(targetFrame, DnDConstants.ACTION_COPY_OR_MOVE,
            new TestDropTargetListener(targetFrame));

    Robot robot = new Robot();
    robot.setAutoDelay(50);

    sourceFrame.toFront();
    robot.waitForIdle();

    Point point = getCenterPoint(sourceFrame);
    robot.mouseMove(point.x, point.y);
    robot.waitForIdle();

    mouseDragAndDrop(robot, point, getCenterPoint(targetFrame));

    long time = System.currentTimeMillis() + 200;

    while (!passed) {
        if (time < System.currentTimeMillis()) {
            sourceFrame.dispose();
            targetFrame.dispose();
            throw new RuntimeException("Mouse clicked event is lost!");
        }
        Thread.sleep(10);
    }
    sourceFrame.dispose();
    targetFrame.dispose();
}
 

/** Creates a new instance of SplashDnDSupport */
DragManager(JComponent component) {
    this.component = component;
    dSource =  new DragSource();
    dRecognizer = dSource.createDefaultDragGestureRecognizer(this.component,DnDConstants.ACTION_MOVE,this);
    dTarget = new DropTarget(this.component,DnDConstants.ACTION_MOVE,this);
    component.addMouseMotionListener(this);
    oCursor = component.getCursor();
}
 

public SourcePanel() {
    setPreferredSize(new Dimension(200, 200));
    DragSource defaultDragSource =
            DragSource.getDefaultDragSource();
    defaultDragSource.createDefaultDragGestureRecognizer(this,
            DnDConstants.ACTION_COPY_OR_MOVE, dragGestureListener);
    setBackground(Color.RED);
}
 

/**
 * Invoked when a mouse button has been pressed on a component.
 */

public void mousePressed(MouseEvent e) {
    events.clear();

    if (mapDragOperationFromModifiers(e) != DnDConstants.ACTION_NONE) {
        try {
            motionThreshold = DragSource.getDragThreshold();
        } catch (Exception exc) {
            motionThreshold = 5;
        }
        appendEvent(e);
    }
}
 

/**
 * Returns whether or not the event is potentially part of a drag sequence.
 */
private boolean mousePressedImpl(MouseEvent me) {
    component = (JComponent)me.getSource();

    if (mapDragOperationFromModifiers(me, component.getTransferHandler())
            != TransferHandler.NONE) {

        motionThreshold = DragSource.getDragThreshold();
        dndArmedEvent = me;
        return true;
    }

    clearState();
    return false;
}
 

SourceFileListFrame() {
    super("Source File List Frame");
    extractFilesFromTheWorkingDirectory();
    initList();
    initGUI();
    new DragSource().createDefaultDragGestureRecognizer(list,
            DnDConstants.ACTION_COPY,this);
}
 

public static void main(String[] args) throws Exception {
    Frame sourceFrame = createFrame("Source Frame", 0, 0);
    Frame targetFrame = createFrame("Target Frame", 250, 250);

    DragSource defaultDragSource
            = DragSource.getDefaultDragSource();
    defaultDragSource.createDefaultDragGestureRecognizer(sourceFrame,
            DnDConstants.ACTION_COPY_OR_MOVE,
            new TestDragGestureListener());
    new DropTarget(targetFrame, DnDConstants.ACTION_COPY_OR_MOVE,
            new TestDropTargetListener(targetFrame));

    Robot robot = new Robot();
    robot.setAutoDelay(50);

    sourceFrame.toFront();
    robot.waitForIdle();

    Point point = getCenterPoint(sourceFrame);
    robot.mouseMove(point.x, point.y);
    robot.waitForIdle();

    mouseDragAndDrop(robot, point, getCenterPoint(targetFrame));

    long time = System.currentTimeMillis() + 1000;

    while (!passed) {
        if (time < System.currentTimeMillis()) {
            sourceFrame.dispose();
            targetFrame.dispose();
            throw new RuntimeException("Mouse clicked event is lost!");
        }
        Thread.sleep(10);
    }
    sourceFrame.dispose();
    targetFrame.dispose();
}
 

SourceFileListFrame() {
    super("Source File List Frame");
    extractFilesFromTheWorkingDirectory();
    initList();
    initGUI();
    new DragSource().createDefaultDragGestureRecognizer(list,
            DnDConstants.ACTION_COPY,this);
}
 

protected DnDTabbedPane() {
  super();
  glassPane.setName("GlassPane");
  new DropTarget(glassPane, DnDConstants.ACTION_COPY_OR_MOVE, new TabDropTargetListener(), true);
  DragSource.getDefaultDragSource().createDefaultDragGestureRecognizer(
      this, DnDConstants.ACTION_COPY_OR_MOVE, new TabDragGestureListener());
}
 

SourceFileListFrame() {
    super("Source File List Frame");
    extractFilesFromTheWorkingDirectory();
    initList();
    initGUI();
    new DragSource().createDefaultDragGestureRecognizer(list,
            DnDConstants.ACTION_COPY,this);
}
 

@Override
public <T extends DragGestureRecognizer> T
    createDragGestureRecognizer(Class<T> abstractRecognizerClass,
                                DragSource ds, Component c,
                                int srcActions, DragGestureListener dgl)
{
    return null;
}
 

public SourcePanel () {
    setPreferredSize(new Dimension(200, 200));
    DragSource defaultDragSource =
            DragSource.getDefaultDragSource();
    defaultDragSource.createDefaultDragGestureRecognizer(this,
            DnDConstants.ACTION_COPY_OR_MOVE, dragGestureListener);
    setBackground(Color.RED);
}
 

/**
 * Invoked when a mouse button has been pressed on a component.
 */

public void mousePressed(MouseEvent e) {
    events.clear();

    if (mapDragOperationFromModifiers(e) != DnDConstants.ACTION_NONE) {
        try {
            motionThreshold = DragSource.getDragThreshold();
        } catch (Exception exc) {
            motionThreshold = 5;
        }
        appendEvent(e);
    }
}
 

/**
 * Create a drag gesture recognizer for the lightweight frame.
 */
default public <T extends DragGestureRecognizer> T createDragGestureRecognizer(
        Class<T> abstractRecognizerClass,
        DragSource ds, Component c, int srcActions,
        DragGestureListener dgl)
{
    return null;
}
 

public void dragGestureRecognized( final DragGestureEvent anEvent ) {
  final ElementMetaData elementMetaData = ElementTypeRegistry.getInstance().getElementType( elementName );
  final ElementMetaDataTransferable transferable = new ElementMetaDataTransferable( elementMetaData );
  anEvent.startDrag( DragSource.DefaultCopyNoDrop, EMPTY_DRAG_IMAGE, new Point(), transferable, null );

  final ButtonModel model = getModel();
  model.setArmed( false );
  model.setPressed( false );
}
 

public SourcePanel() {
    setPreferredSize(new Dimension(200, 200));
    DragSource defaultDragSource =
            DragSource.getDefaultDragSource();
    defaultDragSource.createDefaultDragGestureRecognizer(this,
            DnDConstants.ACTION_COPY_OR_MOVE, dragGestureListener);
    setBackground(Color.RED);
}