/*
 * File    : CustomListCellRenderer.java
 * Created : 09-apr-2003 18:27
 * By      : fbusquets
 *
 * JClic - Authoring and playing system for educational activities
 *
 * Copyright (C) 2000 - 2005 Francesc Busquets & Departament
 * d'Educacio de la Generalitat de Catalunya
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details (see the LICENSE file).
 */

package edu.xtec.util;

import java.awt.Component;
import javax.swing.Icon;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.ListCellRenderer;

/**
 * This class is a {@link javax.swing.ListCellRenderer} that can use an array of
 * strings and another array of icons to display its content based on the value of the
 * <CODE>index</CODE> param passed to <CODE>getListCellRendererComponent</CODE>.
 * @author Francesc Busquets (fbusquets@xtec.cat)
 * @version 1.0
 */
public class CustomListCellRenderer extends JLabel implements ListCellRenderer{
    
    protected String[] labels=null;
    protected Icon[] icons=null;
    
    public CustomListCellRenderer() {
        this(null, null);
    }
    
    /** Creates a new instance of CustomListCellRenderer */
    public CustomListCellRenderer(String[] labels, Icon[] icons) {
        setObjects(labels, icons);
        setOpaque(true);
        if(labels==null){
            setHorizontalAlignment(CENTER);
            setVerticalAlignment(CENTER);
        }
        setHorizontalAlignment(JLabel.LEFT);
    }
    
    public void setObjects(String[] labels, Icon[] icons){
        this.labels=labels;
        this.icons=icons;
    }
    
    public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
        if (isSelected) {
            setBackground(list.getSelectionBackground());
            setForeground(list.getSelectionForeground());
        } else {
            setBackground(list.getBackground());
            setForeground(list.getForeground());
        }
        
        String s = "";
        if(value instanceof String)
            s=(String)value;
        else if(labels!=null && index>=0 && index<labels.length)
            s=labels[index];
        
        Icon icon = null;
        if(value instanceof Icon)
            icon=(Icon)value;
        else if(icons!=null && index>=0 && index<icons.length)
            icon=icons[index];
        else if(icons!=null && labels!=null && index<0 && value!=null){
            for(int i=0; i<labels.length; i++){
                if(value.equals(labels[i])){
                    if(i<icons.length)
                        icon=icons[i];
                    break;
                }
            }
        }
        
        setText(s);
        setIcon(icon);
        
        return this;
    }    
}