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selektor/src/lib/ExtensionFileFilter.java

91 lines
2.6 KiB
Java

/*
* Copyright (C) 2009-2017 Alistair Neil <info@dazzleships.net>
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package lib;
import java.io.File;
import javax.swing.filechooser.FileFilter;
/**
*
* @author Alistair Neil, <info@dazzleships.net>
* Taken from Oracle documentation.
*/
public class ExtensionFileFilter extends FileFilter {
String description;
String extensions[];
/**
* Convenience constructor for a single extension
*
* @param description
* @param extension
*/
public ExtensionFileFilter(String description, String extension) {
this(description, new String[]{extension});
}
/**
* Convenience constructor for a multiple extensions
*
* @param description
* @param extensions
*/
public ExtensionFileFilter(String description, String extensions[]) {
if (description == null) {
this.description = extensions[0];
} else {
this.description = description;
}
this.extensions = extensions.clone();
toLower(this.extensions);
}
private void toLower(String array[]) {
for (int i = 0, n = array.length; i < n; i++) {
array[i] = array[i].toLowerCase();
}
}
/**
* Get description
*
* @return String
*/
@Override
public String getDescription() {
return description;
}
@Override
public boolean accept(File file) {
if (file.isDirectory()) {
return true;
} else {
String path = file.getAbsolutePath().toLowerCase();
for (int i = 0, n = extensions.length; i < n; i++) {
String extension = extensions[i];
if ((path.endsWith(extension) && (path.charAt(path.length() - extension.length() - 1)) == '.')) {
return true;
}
}
}
return false;
}
}