private void processDrop(DropData dropData, DropTargetDropEvent dropTargetDropEvent) {
putEntryAtPoint(dropData.whatToDrop, dropData.whereInTable);
_widget.addEntry(dropData.whatToDrop);
_underlyingTable.setRowSelectionInterval(dropData.whereInTable.x, dropData.whereInTable.x);
_underlyingTable.setColumnSelectionInterval(dropData.whereInTable.y, dropData.whereInTable.y);
dropTargetDropEvent.acceptDrop(dropTargetDropEvent.getDropAction());
dropTargetDropEvent.dropComplete(true);
}
protected Point getTableLocationForEvent(DropTargetDropEvent dropTargetDropEvent) {
Point dropTargetPoint = dropTargetDropEvent.getLocation();
int column = _underlyingTable.columnAtPoint(dropTargetPoint);
int row = _underlyingTable.rowAtPoint(dropTargetPoint);
if ((row < 0) || (column < 0)) {
return null;
}
return new Point(row, column);
}
public void drop(DropTargetDropEvent dropTargetDropEvent) {
DropData dropData = convertEventIntoDropData(dropTargetDropEvent);
if (null == dropData) {
dropTargetDropEvent.rejectDrop();
} else {
int dropAction = dropTargetDropEvent.getDropAction();
if (DnDConstants.ACTION_MOVE == dropAction) {
_widget.removeEntry(dropData.whatToDrop);
processDrop(dropData, dropTargetDropEvent);
}
if (DnDConstants.ACTION_COPY == dropAction) {
dropData.whatToDrop =
RecursiveCopy.recursivelyCopyInstance(
dropData.whatToDrop, Constants.RECURSIVE_COPY_DEPTH_FOR_DND);
processDrop(dropData, dropTargetDropEvent);
}
}
_widget.setIsCurrentlyDragging(false);
return;
}
private DropData convertEventIntoDropData(DropTargetDropEvent dropTargetDropEvent) {
Transferable transferable = dropTargetDropEvent.getTransferable();
Point tableLocation = getTableLocationForEvent(dropTargetDropEvent);
if (null != _underlyingTable.getValueAt(tableLocation.x, tableLocation.y)) {
return null;
}
Instance entry;
try {
entry = (Instance) transferable.getTransferData(_flavor);
} catch (Exception e) {
return null;
}
if ((null == entry) || !entry.hasType(_entryCls)) {
return null;
}
return new DropData(tableLocation, entry);
}