DAG en dessous d'une node
salut
je tente via un drag and drop sur un jtree d'insérer une valeur en dessous d'une node
Code:
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import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.DropMode;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.JTree;
import javax.swing.TransferHandler;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreeModel;
import testglob.MyTransferHandler;
public class TreeDragDemo extends JFrame {
JTree tree;
public TreeDragDemo() {
setTitle("Drag'n Drop avec un JLabel !");
setSize(400, 200);
setLocationRelativeTo(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel pan = new JPanel();
pan.setLayout(new GridLayout(1, 1));
pan.setBackground(Color.white);
JLabel srcLib = new JLabel("Source de drag : ", JLabel.RIGHT);
JLabel src = new JLabel("Noeud 1");
//------------------------------------------------------
//On utilise notre nouvel objet MyTransferHandle
src.setTransferHandler(new MyTransferHandler());
src.addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent e) {
JComponent lab = (JComponent) e.getSource();
TransferHandler handle = lab.getTransferHandler();
handle.exportAsDrag(lab, e, TransferHandler.MOVE);
}
});
//------------------------------------------------------
JLabel destLib = new JLabel("Destination de drag : ", JLabel.RIGHT);
JTextField dest = new JTextField();
dest.setDragEnabled(true);
tree = new JTree(getModel());
tree.setDragEnabled(true);
tree.setTransferHandler(new TreeTransferHandler(tree));
pan.add(src);
pan.add(new JScrollPane(tree));
//Pour le choix des actions
JComboBox combo = new JComboBox();
combo.addItem("USE_SELECTION");
combo.addItem("ON");
combo.addItem("INSERT");
combo.addItem("ON_OR_INSERT");
combo.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent event) {
String value = event.getItem().toString();
if (value.equals("USE_SELECTION")) {
tree.setDropMode(DropMode.USE_SELECTION);
}
if (value.equals("ON")) {
tree.setDropMode(DropMode.ON);
}
if (value.equals("INSERT")) {
tree.setDropMode(DropMode.INSERT);
}
if (value.equals("ON_OR_INSERT")) {
tree.setDropMode(DropMode.ON_OR_INSERT);
}
}
});
add(pan, BorderLayout.CENTER);
add(combo, BorderLayout.SOUTH);
setVisible(true);
}
private TreeModel getModel() {
DefaultMutableTreeNode root = new DefaultMutableTreeNode("SDZ");
DefaultMutableTreeNode forum = new DefaultMutableTreeNode("Forum");
forum.add(new DefaultMutableTreeNode("C++"));
forum.add(new DefaultMutableTreeNode("Java"));
forum.add(new DefaultMutableTreeNode("PHP"));
DefaultMutableTreeNode tuto = new DefaultMutableTreeNode("Tutorial");
tuto.add(new DefaultMutableTreeNode("Tutorial"));
tuto.add(new DefaultMutableTreeNode("Programmation"));
tuto.add(new DefaultMutableTreeNode("Mapping"));
root.add(tuto);
root.add(forum);
return new DefaultTreeModel(root);
}
public static void main(String[] args) {
new TreeDragDemo();
}
} |
le mode a prendre est le DropMode.ON_OR_INSERT
il semble impossible d'insérer le texte sous: PHP ou bien Mapping, il est alors mis au niveau du root.
une idée?
