How to get a CheckboxEvent

Hi all,

I use an AbstractPortalComponent. In the doContent-method I build up a Tree containing TreeNodes that carry Checkboxes. Can anyone explain to me how I can get the events which are fired by the checkboxes. See my example:

public class ObjectTree extends AbstractPortalComponent

{

public void doContent(IPortalComponentRequest request, IPortalComponentResponse response)

{

IPageContext context = PageContextFactory.createPageContext(request, response);

Form form = context.createFormDocument("Test");

context.render();

FormLayout formLayout = new FormLayout();

Tree tree = new Tree("new Tree");

TreeNode rootNode = new TreeNode("root", "Wurzelobjekt");

tree.setRootNode(rootNode);

rootNode.setComponent(createCheckbox("Wurzelobjekt"));

TreeNode treeNode1 = new TreeNode("zwei", "zweite Ebene", rootNode);

treeNode1.setComponent(createCheckbox("zweite Ebene"));

TreeNode treeNode2 = new TreeNode("drei", "dritte Ebene", treeNode1);

treeNode2.setComponent(createCheckbox("dritte Ebene"));

formLayout.addComponent(1,1, tree);

form.addComponent(formLayout);

context.render();

}

private Checkbox createCheckbox(String name)

{

Checkbox cb = new Checkbox(name);

cb.setText(name);

cb.setOnClick("click");

return cb;

}

public void click(Event event)

{

System.out.println("TreeView onClick");

}

The click-method ist not executed.

Thanks in advance

Martina