public void addEngines() {
    ArrayList<Player> disPlayers = new ArrayList<Player>();
    ArrayList<Player> ordPlayers = new ArrayList<Player>();
    PMS r = PMS.get();

    for (String id : configuration.getEnginesAsList(r.getRegistry())) {
      // boolean matched = false;
      for (Player p : PlayerFactory.getAllPlayers()) {
        if (p.id().equals(id)) {
          ordPlayers.add(p);
          // matched = true;
        }
      }
    }

    for (Player p : PlayerFactory.getAllPlayers()) {
      if (!ordPlayers.contains(p)) {
        ordPlayers.add(p);
        disPlayers.add(p);
      }
    }

    for (Player p : ordPlayers) {
      TreeNodeSettings en = new TreeNodeSettings(p.name(), p, null);
      if (disPlayers.contains(p)) {
        en.setEnable(false);
      }
      JComponent jc = en.getConfigPanel();
      if (jc == null) {
        jc = buildEmpty();
      }
      jc.addComponentListener(
          new ComponentAdapter() {
            @Override
            public void componentShown(ComponentEvent e) {
              handleCardComponentChange(e.getComponent());
            }
          });
      tabbedPane.add(en.id(), jc);
      parent[p.purpose()].add(en);
    }

    for (int i = 0; i < tree.getRowCount(); i++) {
      tree.expandRow(i);
    }

    tree.setSelectionRow(0);
  }
 private void updateEngineModel() {
   ArrayList<String> engines = new ArrayList<String>();
   Object root = tree.getModel().getRoot();
   for (int i = 0; i < tree.getModel().getChildCount(root); i++) {
     Object firstChild = tree.getModel().getChild(root, i);
     if (!tree.getModel().isLeaf(firstChild)) {
       for (int j = 0; j < tree.getModel().getChildCount(firstChild); j++) {
         Object secondChild = tree.getModel().getChild(firstChild, j);
         if (secondChild instanceof TreeNodeSettings) {
           TreeNodeSettings tns = (TreeNodeSettings) secondChild;
           if (tns.isEnable() && tns.getPlayer() != null) {
             engines.add(tns.getPlayer().id());
           }
         }
       }
     }
   }
   configuration.setEnginesAsList(engines);
 }
  public JComponent buildLeft() {
    String colSpec = FormLayoutUtil.getColSpec(LEFT_COL_SPEC, orientation);
    FormLayout layout = new FormLayout(colSpec, LEFT_ROW_SPEC);
    PanelBuilder builder = new PanelBuilder(layout);
    builder.setBorder(Borders.EMPTY_BORDER);
    builder.setOpaque(false);

    CellConstraints cc = new CellConstraints();

    JButton but = new JButton(LooksFrame.readImageIcon("kdevelop_down-32.png"));
    but.setToolTipText(Messages.getString("TrTab2.6"));
    but.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            TreePath path = tree.getSelectionModel().getSelectionPath();
            if (path != null && path.getLastPathComponent() instanceof TreeNodeSettings) {
              TreeNodeSettings node = ((TreeNodeSettings) path.getLastPathComponent());
              if (node.getPlayer() != null) {
                DefaultTreeModel dtm = (DefaultTreeModel) tree.getModel(); // get the tree model
                // now get the index of the selected node in the DefaultTreeModel
                int index = dtm.getIndexOfChild(node.getParent(), node);
                // if selected node is first, return (can't move it up)
                if (index < node.getParent().getChildCount() - 1) {
                  dtm.insertNodeInto(
                      node, (DefaultMutableTreeNode) node.getParent(), index + 1); // move the node
                  dtm.reload();
                  for (int i = 0; i < tree.getRowCount(); i++) {
                    tree.expandRow(i);
                  }
                  tree.getSelectionModel().setSelectionPath(new TreePath(node.getPath()));
                  updateEngineModel();
                }
              }
            }
          }
        });
    builder.add(but, FormLayoutUtil.flip(cc.xy(2, 3), colSpec, orientation));

    JButton but2 = new JButton(LooksFrame.readImageIcon("up-32.png"));
    but2.setToolTipText(Messages.getString("TrTab2.6"));
    but2.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            TreePath path = tree.getSelectionModel().getSelectionPath();
            if (path != null && path.getLastPathComponent() instanceof TreeNodeSettings) {
              TreeNodeSettings node = ((TreeNodeSettings) path.getLastPathComponent());
              if (node.getPlayer() != null) {
                DefaultTreeModel dtm = (DefaultTreeModel) tree.getModel(); // get the tree model
                // now get the index of the selected node in the DefaultTreeModel
                int index = dtm.getIndexOfChild(node.getParent(), node);
                // if selected node is first, return (can't move it up)
                if (index != 0) {
                  dtm.insertNodeInto(
                      node, (DefaultMutableTreeNode) node.getParent(), index - 1); // move the node
                  dtm.reload();
                  for (int i = 0; i < tree.getRowCount(); i++) {
                    tree.expandRow(i);
                  }
                  tree.getSelectionModel().setSelectionPath(new TreePath(node.getPath()));
                  updateEngineModel();
                }
              }
            }
          }
        });
    builder.add(but2, FormLayoutUtil.flip(cc.xy(3, 3), colSpec, orientation));

    JButton but3 = new JButton(LooksFrame.readImageIcon("connect_no-32.png"));
    but3.setToolTipText(Messages.getString("TrTab2.0"));
    but3.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            TreePath path = tree.getSelectionModel().getSelectionPath();
            if (path != null
                && path.getLastPathComponent() instanceof TreeNodeSettings
                && ((TreeNodeSettings) path.getLastPathComponent()).getPlayer() != null) {
              ((TreeNodeSettings) path.getLastPathComponent())
                  .setEnable(!((TreeNodeSettings) path.getLastPathComponent()).isEnable());
              updateEngineModel();
              tree.updateUI();
            }
          }
        });
    builder.add(but3, FormLayoutUtil.flip(cc.xy(4, 3), colSpec, orientation));

    DefaultMutableTreeNode root = new DefaultMutableTreeNode(Messages.getString("TrTab2.11"));
    TreeNodeSettings commonEnc =
        new TreeNodeSettings(Messages.getString("TrTab2.5"), null, buildCommon());
    commonEnc
        .getConfigPanel()
        .addComponentListener(
            new ComponentAdapter() {
              @Override
              public void componentShown(ComponentEvent e) {
                handleCardComponentChange(e.getComponent());
              }
            });
    tabbedPane.add(commonEnc.id(), commonEnc.getConfigPanel());
    root.add(commonEnc);

    parent = new DefaultMutableTreeNode[5];
    parent[0] = new DefaultMutableTreeNode(Messages.getString("TrTab2.14"));
    parent[1] = new DefaultMutableTreeNode(Messages.getString("TrTab2.15"));
    parent[2] = new DefaultMutableTreeNode(Messages.getString("TrTab2.16"));
    parent[3] = new DefaultMutableTreeNode(Messages.getString("TrTab2.17"));
    parent[4] = new DefaultMutableTreeNode(Messages.getString("TrTab2.18"));
    root.add(parent[0]);
    root.add(parent[1]);
    root.add(parent[2]);
    root.add(parent[3]);
    root.add(parent[4]);

    tree =
        new JTree(new DefaultTreeModel(root)) {
          private static final long serialVersionUID = -6703434752606636290L;
        };
    tree.setRootVisible(false);
    tree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
    tree.addTreeSelectionListener(
        new TreeSelectionListener() {
          @Override
          public void valueChanged(TreeSelectionEvent e) {
            if (e.getNewLeadSelectionPath() != null
                && e.getNewLeadSelectionPath().getLastPathComponent() instanceof TreeNodeSettings) {
              TreeNodeSettings tns =
                  (TreeNodeSettings) e.getNewLeadSelectionPath().getLastPathComponent();
              cl.show(tabbedPane, tns.id());
            }
          }
        });

    tree.setCellRenderer(new TreeRenderer());
    JScrollPane pane =
        new JScrollPane(
            tree, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);

    builder.add(pane, FormLayoutUtil.flip(cc.xyw(2, 1, 4), colSpec, orientation));

    builder.addLabel(
        Messages.getString("TrTab2.19"),
        FormLayoutUtil.flip(cc.xyw(2, 5, 4), colSpec, orientation));
    builder.addLabel(
        Messages.getString("TrTab2.20"),
        FormLayoutUtil.flip(cc.xyw(2, 7, 4), colSpec, orientation));

    JPanel panel = builder.getPanel();

    // Apply the orientation to the panel and all components in it
    panel.applyComponentOrientation(orientation);

    return panel;
  }