I have made a tree and this is working fine but i am facing a problem when i
want to click on the tree node so it doesnot work(expand).Can some one help
me in this matter? Help me as soon as possible. Thanks in advance.
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreeNode;
import org.apache.wicket.ajax.AjaxRequestTarget;
import no.vismaunique.ebilag.data.Bilag;
import no.vismaunique.ebilag.data.BilagNivaaKode;
import no.vismaunique.ebilag.data.Oppgave;
import no.vismaunique.ebilag.db.EbilaghdFunctions;
import no.webcenter.webmal.okonomi.e30.SelRegAar;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.AjaxLink;
import org.apache.wicket.extensions.markup.html.tree.*;
import
org.apache.wicket.extensions.markup.html.tree.DefaultAbstractTree.LinkType;
import org.apache.wicket.Page;
import org.apache.wicket.markup.html.link.Link;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.markup.html.tree.AbstractTree;
public class VenstrePanel extends Panel implements Serializable {
private static final long serialVersionUID = 1L;
public VenstrePanel(String id) {
super(id);
// create a list with sublists
String user = ((EBilagSession) getSession()).getUser();
SelRegAar selRegAar = new SelRegAar(1, 0, 2008);
List l1 = new ArrayList();
for (BilagNivaaKode bilagkode : BilagNivaaKode.values()) {
ArrayList temp = (ArrayList)
EbilaghdFunctions.hentEbilag(selRegAar,
user, bilagkode);
if(temp.size() > 0)
l1.add(temp);
};
TreeModel treeModel = convertToTreeModel(l1);
final Tree tree = new Tree("tre", treeModel) {
protected String renderNode(TreeNode node) {
DefaultMutableTreeNode treeNode =
(DefaultMutableTreeNode) node;
Object userObject = treeNode.getUserObject();
String text = "";
if (userObject instanceof List) {
if(((List) userObject).size() >
0)
{
Bilag bilag =
((Bilag)((List)userObject).get(0));
text =
bilag.getNivaaKode().getDescription(null);
}
}
else if (userObject instanceof Oppgave) {
Oppgave oppgave = (Oppgave) userObject;
text = oppgave.getNavn();
}
return text;
}
};
tree.setRootLess(true);
tree.setLinkType(LinkType.AJAX);
add(tree);
add(new AjaxLink("expandAll") {
@Override
public void onClick(AjaxRequestTarget target) {
// TODO Auto-generated method stub
tree.getTreeState().expandAll();
target.addComponent(tree);
}
});
add(new AjaxLink("collapseAll") {
@Override
public void onClick(AjaxRequestTarget target) {
tree.getTreeState().collapseAll();
target.addComponent(tree);
}
});
}
private void add(DefaultMutableTreeNode parent, List sub) {
for (Iterator i = sub.iterator(); i.hasNext();) {
Object o = i.next();
if (o instanceof List) {
DefaultMutableTreeNode child = new
DefaultMutableTreeNode(o);
parent.add(child);
add(child, (List) o);
} else {
DefaultMutableTreeNode child = new
DefaultMutableTreeNode(o);
parent.add(child);
}
}
}
private TreeModel convertToTreeModel(List list) {
TreeModel model = null;
DefaultMutableTreeNode rootNode = new
DefaultMutableTreeNode("Tre");
add(rootNode, list);
model = new DefaultTreeModel(rootNode);
return model;
}
}
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