problem in Jtree
Hello,
I am creating a JTree and trying to find the depth of a selected node;So I am trying to find the selected node and then get the depth.I am getting it correctly,but after I find it ,tree collapses to root and does not exapnd on clicking.Let me know the error.
import java.awt.Dimension;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.JFrame;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
publicclass treeTestextends JFrame{
JTree _tree;
public treeTest(){
_tree=new JTree();
_tree.setPreferredSize(new Dimension(200, 600));
_tree.addMouseListener(new MouseListener(){
publicvoid mouseClicked(MouseEvent e){
String ssname;
int depth;
if (e.getSource()instanceof JTree){
try{
ssname = _tree.getSelectionPath()
.getLastPathComponent().toString();
DefaultMutableTreeNode node=(DefaultMutableTreeNode)find(_tree,
(DefaultMutableTreeNode)_tree.getModel().getRoot(),ssname);
depth=node.getDepth();
}catch (Exception exp){
ssname ="novalue";
depth=0;
//_repSel.removeAllItems();
}
if (!(ssname.equals("novalue"))){
//Vector v = getComboData(ssname);
DefaultMutableTreeNode node;
node=find(_tree,(DefaultMutableTreeNode)_tree.getModel().getRoot(),ssname);
depth=node.getDepth();
System.out.println("depth is:"+depth+"for node:"+node);
}
}
}
publicvoid mousePressed(MouseEvent arg0){
// TODO Auto-generated method stub
}
publicvoid mouseReleased(MouseEvent arg0){
// TODO Auto-generated method stub
}
publicvoid mouseEntered(MouseEvent arg0){
// TODO Auto-generated method stub
}
publicvoid mouseExited(MouseEvent arg0){
// TODO Auto-generated method stub
}
});
getContentPane().add(_tree);
pack();
setVisible(true);
}
publicstaticvoid main(String args[]){
new treeTest();
}
public DefaultMutableTreeNode find(JTree _tree,
DefaultMutableTreeNode root, String name){
if (root.getUserObject().equals(name)){
_tree.collapseRow(0);
return root;
}
DefaultMutableTreeNode el =null;
int childCount = root.getChildCount();
DefaultMutableTreeNode child;
for (int i = 0; i < childCount; i++){
child = (DefaultMutableTreeNode) root.getChildAt(i);
el = find(_tree, child, name);
if (el !=null)
return el;
}
return el;
}
}
