public void mouseEntered(MouseEvent evt) {
if (list != null) {
TransferHandler th1 = getFileChooser().getTransferHandler();
TransferHandler th2 = list.getTransferHandler();
if (th1 != th2) {
list.setTransferHandler(th1);
}
if (getFileChooser().getDragEnabled() != list.getDragEnabled()) {
list.setDragEnabled(getFileChooser().getDragEnabled());
}
}
}
