/*
 * File    : SimpleFileFilter.java
 * Created : 01-feb-2001 18:07
 * 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.io.File;
import java.io.FilenameFilter;

/**
 *
 * @author Francesc Busquets (fbusquets@xtec.cat)
 * @version 1.0
 */
public class SimpleFileFilter extends javax.swing.filechooser.FileFilter implements java.io.FileFilter{
    
    private String m_description = null;
    private String[] m_extension = null;
    
    public SimpleFileFilter(String extension, String description) {
        this(new String[]{extension}, description);
    }
    
    public SimpleFileFilter(String[] extension, String description) {
        m_description = description;
        m_extension=extension;
        if(m_extension!=null)
            for(int i=0; i<m_extension.length; i++)
                if(!m_extension[i].startsWith("."))
                    m_extension[i] = "." + m_extension[i];
    }
    
    public String getDescription() {
        return m_description;
    }
    
    public boolean accept(File f) {
        boolean result=false;
        if (f == null)
            result=false;
        else if (f.isDirectory())
            result=true;
        else if(m_extension!=null){
            String s=f.getName().toLowerCase();
            for(String ex : m_extension)
                if(ex.equals(".*") || s.endsWith(ex)){
                    result=true;
                    break;
                }
        }        
        return result;
    }
    
    public FilenameFilter getFilenameFilter(){
        return new FilenameFilter(){
            public boolean accept(File f, String name){
                return SimpleFileFilter.this.accept(new File(f, name));
            }
        };
    }
    
    
    
    public File checkFileExtension(File f){
        File result=f;
        if(!accept(result)){
            for(String ex : m_extension)
                if(!ex.equals(".*"))
                    result=new File(f.getAbsolutePath()+ex);
        }
        return result;
    }
}