Get the Index of the Node in a Primefaces Tree

Question

I am using a Primefaces Tree which has a following structure :

Node 1

Node 1.1

Node 1.2

Node 1.3

Now, I want to add a node in betwee

Answer 1

This is another example which present a easy way to add now node below specific node.

XHTML

ManagedBean

@ManagedBean(name="treeBasicView")
@ViewScoped
public class BasicView implements Serializable {

    private TreeNode root;
    private TreeNode selectedNode;
    private int position;
    private String selectedNodeName;
    private String newNodeName;

    public TreeNode getRoot() {
        return root;
    }

    public String getSelectedNodeName() {
        return selectedNodeName;
    }

    public void setSelectedNodeName(String selectedNodeName) {
        this.selectedNodeName = selectedNodeName;
    }

    public String getNewNodeName() {
        return newNodeName;
    }

    public void setNewNodeName(String newNodeName) {
        this.newNodeName = newNodeName;
    }

    @PostConstruct
    public void init() {
        root = new DefaultTreeNode("Root", null);
        TreeNode node0 = new DefaultTreeNode("Node 0", root);
        TreeNode node1 = new DefaultTreeNode("Node 1", root);

        TreeNode node00 = new DefaultTreeNode("Node 0.0", node0);
        TreeNode node01 = new DefaultTreeNode("Node 0.1", node0);

        TreeNode node10 = new DefaultTreeNode("Node 1.0", node1);

        node1.getChildren().add(new DefaultTreeNode("Node 1.1"));
        node00.getChildren().add(new DefaultTreeNode("Node 0.0.0"));
        node00.getChildren().add(new DefaultTreeNode("Node 0.0.1"));
        node01.getChildren().add(new DefaultTreeNode("Node 0.1.0"));
        node10.getChildren().add(new DefaultTreeNode("Node 1.0.0"));
        root.getChildren().add(new DefaultTreeNode("Node 2"));
    }

    public void addNewNode(ActionEvent event) {
        findNode(root);
        selectedNode.getParent().getChildren().add(position, new DefaultTreeNode(newNodeName));
    }

    private void findNode(TreeNode node){
        int pos = 0;
        List subChild = node.getChildren();
        for (TreeNode treeNode : subChild) {
            pos = pos + 1;
            if(treeNode.getData().equals(selectedNodeName)){
                position = pos;
                selectedNode = treeNode;
            }
            findNode(treeNode);
        }
    }
}

After click add child