package com.vci.client.ui.swing;

import java.awt.Component;

import javax.swing.DefaultListCellRenderer;
import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JTree;
import javax.swing.UIManager;
import javax.swing.plaf.ComboBoxUI;
import javax.swing.plaf.basic.ComboPopup;
import javax.swing.plaf.metal.MetalComboBoxUI;
import javax.swing.tree.TreeCellRenderer;
import javax.swing.tree.TreeNode;
import javax.swing.tree.TreePath;

import com.sun.java.swing.plaf.motif.MotifComboBoxUI;
import com.sun.java.swing.plaf.windows.WindowsComboBoxUI;

public class JTreeComboBox extends JComboBox{

	/**
	 * 
	 */
	private static final long serialVersionUID = -2564967923898399676L;

	private JTree tree;

    public JTreeComboBox(){
        this(new JTree());
    }

    public JTreeComboBox(JTree tree){
        this.setTree(tree);
    }
    
    public void setTree(JTree tree){
        this.tree = tree;
        if(tree != null){
            this.setSelectedItem(tree.getSelectionPath());
            this.setRenderer(new JTreeComboBoxRenderer());
        }
        this.updateUI();
    }
    
    public JTree getTree(){
        return tree;
    }
    
    public void setSelectedItem(Object o){
        tree.setSelectionPath((TreePath)o);
        getModel().setSelectedItem(o);
    }
    
    public void updateUI(){
        ComboBoxUI cui = (ComboBoxUI)UIManager.getUI(this);
        if(cui instanceof MetalComboBoxUI){
            cui = new MetalJTreeComboBoxUI();
        } else if(cui instanceof MotifComboBoxUI){
            cui = new MotifJTreeComboBoxUI();
        } else {
            cui = new WindowsJTreeComboBoxUI();
        }
        setUI(cui);
    }
    
    class MetalJTreeComboBoxUI extends MetalComboBoxUI{
        protected ComboPopup createPopup(){
            return new TreePopup(comboBox);
        }
    }
    
    class WindowsJTreeComboBoxUI extends WindowsComboBoxUI{
        protected ComboPopup createPopup(){
            return new TreePopup(comboBox);
        }
    }

    class MotifJTreeComboBoxUI extends MotifComboBoxUI{
        protected ComboPopup createPopup(){
            return new TreePopup(comboBox);
        }
    }
    
    class JTreeComboBoxRenderer extends DefaultListCellRenderer{
        public Component getListCellRendererComponent(JList list, Object value,
            int index, boolean isSelected, boolean cellHasFocus){
            if(value != null){
                TreePath path = (TreePath)value;
                TreeNode node = (TreeNode)path.getLastPathComponent();
                value = node;
                TreeCellRenderer r = tree.getCellRenderer();
                JLabel lb = (JLabel)r.getTreeCellRendererComponent(
                    tree, value, isSelected, false, node.isLeaf(), index,
                    cellHasFocus);
                return lb;
            }
            return super.getListCellRendererComponent(list, value, index,
                isSelected, cellHasFocus);
        }
    }
}