cplusplusfilefilter.java

具有不同语法高亮的编辑器实例

/*
 * 03/12/2004
 *
 * CPlusPlusFileFilter - A FileFilter that filters everything except C/C++
 *                       related files.
 * Copyright (C) 2004 Robert Futrell
 * [e-mail]
 * www.website.com
 *
 * 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 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package org.fife.ui.rtextfilechooser.filters;

import java.io.File;
import javax.swing.filechooser.*;


/**
 * A file filter for <code>JFileChooser</code>s that filters everything except
 * for C/C++ related files.
 *
 * @author Robert Futrell
 * @version 1.0
 */
public class CPlusPlusFileFilter extends FileFilter {


/*****************************************************************************/


	/**
	 * Decides whether or not a file is "accepted" (i.e., visible in
	 * a <code>JFileChooser</code> with this filter enabled).  Accepts
	 * all directories and all <code>.c</code>, <code>.cpp</code>,
	 * <code>.cxx</code>, and <code>.h</code> files.
	 *
	 * @param f A file to check for whether or not it passes this filter.
	 * @return Whether or not f passes this filter.
	 */
	public boolean accept(File f) {

		// Accept the "file" if it is a directory.
		if (f.isDirectory()) {
			return true;
		}

		// Get the extension of the file.
		String extension = null;
		String s = f.getName();
		int i = s.lastIndexOf('.');
		if (i>0 && i<s.length()-1)
			extension = s.substring(i+1).toLowerCase();

		// Now, accept the file ONLY if it is a .txt file.
		if (extension!=null &&
			(extension.equals("c") || extension.equals("cpp") ||
			 extension.equals("cxx") || extension.equals("h")))
			return true;

		// Any other files are not accepted by this filter.
		return false;

	}


/*****************************************************************************/


	/**
	 * Gets the description of this filter.  This is the message displayed in
	 * the "Files of type" part of the <code>JFileChooser</code>.
	 *
	 * @return The description of this filter.
	 */
	public String getDescription() {
		return "C/C++ Source Files (*.c, *.cpp, *.cxx, *.h)";
	}


/*****************************************************************************/

}