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import java.awt.FlowLayout;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import javax.swing.DefaultListModel;
import javax.swing.DropMode;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
import javax.swing.TransferHandler;
public class ListDrop {
class ListHandler extends TransferHandler {
public boolean canImport(TransferSupport support) {
if (!support.isDrop()) {
return false;
}
return support.isDataFlavorSupported(DataFlavor.stringFlavor);
}
public boolean importData(TransferSupport support) {
if (!canImport(support)) {
return false;
}
Transferable transferable = support.getTransferable();
String line;
try {
line = (String) transferable.getTransferData(DataFlavor.stringFlavor);
} catch (Exception e) {
return false;
}
JList.DropLocation dl = (JList.DropLocation) support.getDropLocation();
int index = dl.getIndex();
model.add(index++, line);
return true;
}
}
JTextField field = new JTextField(20);
DefaultListModel model = new DefaultListModel();
public ListDrop() {
JFrame f = new JFrame();
JList list = new JList(model);
list.setDropMode(DropMode.INSERT);
list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
list.setTransferHandler(new ListHandler());
field.setDragEnabled(true);
f.setLayout(new FlowLayout());
f.add(new JScrollPane(list));
f.add(field);
f.pack();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
public static void main(String[] args) {
new ListDrop();
}
}
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