/*******************************************************************************
 * Breakout Cave Survey Visualizer
 *
 * Copyright (C) 2014 James Edwards
 *
 * jedwards8 at fastmail dot fm
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *******************************************************************************/
package org.andork.swing;

import java.io.File;

import javax.swing.JFileChooser;
import javax.swing.filechooser.FileNameExtensionFilter;

public class JFileChooserUtils {
	public static File correctSelectedFileExtension(JFileChooser chooser) {
		File file = chooser.getSelectedFile();
		if (file == null) {
			return null;
		}
		String name = file.getName();
		String newName = name;
		if (name.matches("\"[^\"]+\"")) {
			newName = name.substring(1, name.length() - 1);
		} else if (chooser.getFileFilter() instanceof FileNameExtensionFilter) {
			String ext = ((FileNameExtensionFilter) chooser.getFileFilter()).getExtensions()[0];
			if (!name.endsWith("." + ext)) {
				newName = name + "." + ext;
			}
		}
		if (!newName.equals(name)) {
			File parent = file.getParentFile();
			if (parent != null) {
				file = new File(parent, newName);
			} else {
				file = new File(newName);
			}
		}

		return file;
	}
}