public boolean isDropAcceptable(DropTargetDropEvent event) { // usually, you
// check the
// available
// data flavors
// here
// in this program, we accept all flavors
return (event.getDropAction() & DnDConstants.ACTION_COPY_OR_MOVE) != 0;
}
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);
}
private void acceptDrop(DropTargetDropEvent dtde) {
int dragaction = dtde.getDropAction();
if (dragaction != 0) {
dtde.acceptDrop(dragaction);
} else {
dtde.acceptDrop(ALL_ACTIONS);
}
}
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;
}