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/*
 * @(#)SimpleFileFilter.java    beta8   2006/04/23
 *
 * Copyright (C) 2008   Adam King (adamjking@optusnet.com.au)
 *
 * This application 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 application 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this application; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */


package org.midibox.utils;

import java.io.File;
import java.io.FileFilter;
import java.util.Vector;

public class SimpleFileFilter implements FileFilter {

    private Vector fileTypes;

    public SimpleFileFilter() {
        fileTypes = new Vector();
    }

    public boolean accept(File pathname) {

        if (pathname.isDirectory()) {
            return true;
        }

        String extension = getExtension(pathname);

        if (extension != null) {
            if (fileTypes.contains(extension)) {
                return true;
            } else {
                return false;
            }
        }
        return false;
    }

    public void addFileType(String extension) {
        fileTypes.add(extension);
    }

    private static String getExtension(File f) {
        String ext = null;
        if (f != null) {
            String s = f.getName();
            int i = s.lastIndexOf('.');

            if (i > 0 && i < s.length() - 1) {
                ext = s.substring(i + 1).toLowerCase();
            }
        }
        return ext;
    }
}