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A filesystem filter.
/*
* JCommon : a free general purpose class library for the Java(tm) platform
*
*
* (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jcommon/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ------------------------
* ExtensionFileFilter.java
* ------------------------
* (C) Copyright 2000-2004, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* $Id: FilesystemFilter.java,v 1.6 2008/09/10 09:26:11 mungady Exp $
*
* Changes (from 26-Oct-2001)
* --------------------------
* 01-Jun-2005 : Updated javadoc.
*/
import java.io.File;
import java.io.FilenameFilter;
import javax.swing.filechooser.FileFilter;
/**
* A filesystem filter.
*
* @author David Gilbert
*/
public class FilesystemFilter extends FileFilter implements FilenameFilter {
/** The file extension, which should be accepted. */
private String[] fileext;
/** The filter description. */
private String descr;
/** A flag indicating whether to accept directories. */
private boolean accDirs;
/**
* Creates a new filter.
*
* @param fileext
* the file extension.
* @param descr
* the description.
*/
public FilesystemFilter(final String fileext, final String descr) {
this(fileext, descr, true);
}
/**
* Creates a new filter.
*
* @param fileext
* the file extension.
* @param descr
* the description.
* @param accDirs
* accept directories?
*/
public FilesystemFilter(final String fileext, final String descr, final boolean accDirs) {
this(new String[] { fileext }, descr, accDirs);
}
/**
* Creates a new filter.
*
* @param fileext
* the file extension.
* @param descr
* the description.
* @param accDirs
* accept directories?
* @throws NullPointerException
* if the file extensions are null.
*/
public FilesystemFilter(final String[] fileext, final String descr, final boolean accDirs) {
this.fileext = (String[]) fileext.clone();
this.descr = descr;
this.accDirs = accDirs;
}
/**
* Returns <code>true</code> if the file is accepted, and <code>false</code>
* otherwise.
*
* @param dir
* the directory.
* @param name
* the file name.
* @return A boolean.
*/
public boolean accept(final File dir, final String name) {
final File f = new File(dir, name);
if (f.isDirectory() && acceptsDirectories()) {
return true;
}
for (int i = 0; i < this.fileext.length; i++) {
if (name.endsWith(this.fileext[i])) {
return true;
}
}
return false;
}
/**
* Returns <code>true</code> if the specified file matches the requirements
* of this filter, and <code>false</code> otherwise.
*
* @param dir
* the file or directory.
* @return A boolean.
*/
public boolean accept(final File dir) {
if (dir.isDirectory() && acceptsDirectories()) {
return true;
}
for (int i = 0; i < this.fileext.length; i++) {
if (dir.getName().endsWith(this.fileext[i])) {
return true;
}
}
return false;
}
/**
* Returns the filter description.
*
* @return The filter description.
*/
public String getDescription() {
return this.descr;
}
/**
* Sets the flag that controls whether or not the filter accepts directories.
*
* @param b
* a boolean.
*/
public void acceptDirectories(final boolean b) {
this.accDirs = b;
}
/**
* Returns the flag that indicates whether or not the filter accepts
* directories.
*
* @return A boolean.
*/
public boolean acceptsDirectories() {
return this.accDirs;
}
}
