260 @Override
261 public void dragExit(DragSourceEvent dse) {
262 }
263
264 @Override
265 public void dragDropEnd(DragSourceDropEvent dsde) {
266 }
267 };
268
269 dtListener = new DropTargetListener() {
270 @Override
271 public void dragEnter(DropTargetDragEvent dtde) {
272 if (dropObject != null) {
273 dtde.rejectDrag();
274 return;
275 }
276 dtde.acceptDrag(DnDConstants.ACTION_MOVE);
277 try {
278 Transferable t = dtde.getTransferable();
279 Object data = t.getTransferData(DropObjectFlavor);
280 if (data != null) {
281 throw new Exception("getTransferData returned non-null");
282 }
283 } catch (Exception e) {
284 dragEnterException = e;
285 e.printStackTrace();
286 } finally {
287 lock.countDown();
288 }
289 }
290
291 @Override
292 public void dragOver(DropTargetDragEvent dtde) {
293 if (dropObject != null) {
294 dtde.rejectDrag();
295 return;
296 }
297 dtde.acceptDrag(DnDConstants.ACTION_MOVE);
298 }
299
300 @Override
301 public void dropActionChanged(DropTargetDragEvent dtde) {
302 }
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260 @Override
261 public void dragExit(DragSourceEvent dse) {
262 }
263
264 @Override
265 public void dragDropEnd(DragSourceDropEvent dsde) {
266 }
267 };
268
269 dtListener = new DropTargetListener() {
270 @Override
271 public void dragEnter(DropTargetDragEvent dtde) {
272 if (dropObject != null) {
273 dtde.rejectDrag();
274 return;
275 }
276 dtde.acceptDrag(DnDConstants.ACTION_MOVE);
277 try {
278 Transferable t = dtde.getTransferable();
279 Object data = t.getTransferData(DropObjectFlavor);
280 } catch (Exception e) {
281 dragEnterException = e;
282 e.printStackTrace();
283 } finally {
284 lock.countDown();
285 }
286 }
287
288 @Override
289 public void dragOver(DropTargetDragEvent dtde) {
290 if (dropObject != null) {
291 dtde.rejectDrag();
292 return;
293 }
294 dtde.acceptDrag(DnDConstants.ACTION_MOVE);
295 }
296
297 @Override
298 public void dropActionChanged(DropTargetDragEvent dtde) {
299 }
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