buddylist.java

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package connex.session.desktop;

import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import java.util.Enumeration;
import javax.swing.JTree;
import connex.core.Presence.PresenceListener;
import connex.core.Presence.PresenceEvent;



public class BuddyList extends JTree implements PresenceListener {

    private DefaultMutableTreeNode root;
    private DefaultTreeModel tmodel;


    public BuddyList(String pgroot) {
        root = new DefaultMutableTreeNode(pgroot);
        tmodel = new DefaultTreeModel(root);
        this.setModel(tmodel);
        this.setCellRenderer(new TreeRenderer());
        this.setRowHeight(23);

    }



    public void addUser(UserNode un) {
        if (isNewUser(un)) {
            root.add(un);
            ((DefaultTreeModel) getModel()).reload();
        }

    }

    /* public void addUser(PresenceAdv adv) {
         UserNode un = new UserNode(adv);
         addUser(un);
     }*/

    public UserNode getUser(String id) {
        Enumeration num = root.children();
        while (num != null && num.hasMoreElements()) {
            UserNode userNode = (UserNode) num.
                                nextElement();

            if (userNode.getId().equals(id)) {
                System.out.println("Updated User " + userNode.getName());
                return userNode;

            }
        }
        return null;
    }

    public void removeUser() {

    }

    public boolean isNewUser(UserNode un) {
        Enumeration num = root.children();
        while (num != null && num.hasMoreElements()) {
            UserNode userNode = (UserNode) num.
                                nextElement();

            if (userNode.getId().equals(un.getId())) {
                return false;
            }
        }
        return true;

    }

    public void update(PresenceEvent e) {

    }

    public void newMember(PresenceEvent e) {
        UserNode un = new UserNode(e.getMemberName(), e.getMemberID(),
                                   e.getStatus());
        this.addUser(un);
    }

    public void updateMember(PresenceEvent e) {
        UserNode un = null;
        try {
            un = this.getUser(e.getMemberID());
            un.setName(e.getMemberName());
            un.setState(e.getStatus());

            try {

                 ((DefaultTreeModel)getModel()).reload(un);
            } catch (Exception ex1) {
            }

        } catch (Exception ex) {
        }

    }


}