Yeah, that's like Wicket's "nested" example in wicket-examples.
Eelco
On Thu, Oct 8, 2009 at 12:27 PM, Ceki Gulcu <c...@qos.ch> wrote:
> Hello,
>
> I just succeeded to create a self-recursive panel displaying a
> tree-like structure with less than 40 lines of java code and 10 lines
> of HTML. I am including the code here in case someone is interested.
>
>
> ==============================================
> public class Node implements Serializable {
>
> String name;
> List<Node> childrenList = new ArrayList<Node>();
>
> Node(String name) {
> this.name = name;
> }
>
> public void add(Node child) {
> childrenList.add(child);
> }
>
> public String getName() {
> return name;
> }
>
> public List<Node> getChildrenList() {
> return childrenList;
> }
>
> static Node getSampleNode() {
> Node nodeA = new Node("A");
> Node nodeA0 = new Node("A0");
> Node nodeA00 = new Node("A00");
> Node nodeA01 = new Node("A01");
> Node nodeA1 = new Node("A1");
>
> nodeA.add(nodeA0);
> nodeA.add(nodeA1);
>
> nodeA0.add(nodeA00);
> nodeA0.add(nodeA01);
> return nodeA;
> }
> }
>
> =============== Tree.java and Tree.html ========================
> public class Tree extends WebPage {
>
> public Tree() {
> Node node = Node.getSampleNode();
> NodePanel nodePanel = new NodePanel("", "node", node);
> add(nodePanel);
> }
> }
>
> <html xmlns="http://www.w3.org/1999/xhtml";>
> <head>
> <title>Tree</title>
> <link rel="stylesheet" href="style.css" />
> </head>
> <body>
> <div wicket:id="node"></div>
> </body>
> </html>
> ================================================================
>
>
> ===== NodePanel.hava and html ==================================
> public class NodePanel extends Panel {
>
> public NodePanel(final String indent, String id, Node node) {
> super(id);
>
> add(new Label("name", indent+node.getName()));
>
> if (node.getChildrenList().size() == 0) {
> final WebMarkupContainer parent = new WebMarkupContainer("children");
> add(parent);
> parent.add(new EmptyPanel("node"));
> } else {
> add(new ListView("children", node.getChildrenList()) {
> �...@override
> protected void populateItem(ListItem item) {
> Node childNode = (Node) item.getModelObject();
> item.add(new NodePanel(indent+"----", "node", childNode));
> }
> });
> }
> }
> }
>
> <html xmlns:wicket>
>
> <wicket:panel>
> <p wicket:id="name">name</p>
>
> <div wicket:id="children">
> <div wicket:id="node">
> </div>
> </div>
> </wicket:panel>
>
> </html>
> ================================================================
>
> HTH,
>
> --
> Ceki Gülcü
> Logback: The reliable, generic, fast and flexible logging framework for
> Java.
> http://logback.qos.ch
>
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