org.microemu.app.ui.swing.ExtensionFileFilter Maven / Gradle / Ivy
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/*
* MicroEmulator
* Copyright (C) 2001 Bartek Teodorczyk
*
* It is licensed under the following two licenses as alternatives:
* 1. GNU Lesser General Public License (the "LGPL") version 2.1 or any newer version
* 2. Apache License (the "AL") Version 2.0
*
* You may not use this file except in compliance with at least one of
* the above two licenses.
*
* You may obtain a copy of the LGPL at
* http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
*
* You may obtain a copy of the AL at
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the LGPL or the AL for the specific language governing permissions and
* limitations.
*/
package org.microemu.app.ui.swing;
import java.io.File;
import java.util.Hashtable;
import javax.swing.filechooser.FileFilter;
public class ExtensionFileFilter extends FileFilter
{
String description;
Hashtable extensions = new Hashtable();
public ExtensionFileFilter(String description)
{
this.description = description;
}
public boolean accept(File file)
{
if(file != null) {
if(file.isDirectory()) {
return true;
}
String ext = getExtension(file);
if(ext != null && extensions.get(ext) != null) {
return true;
}
}
return false;
}
public void addExtension(String extension)
{
extensions.put(extension.toLowerCase(), this);
}
public String getDescription()
{
return description;
}
String getExtension(File file)
{
if (file != null) {
String filename = file.getName();
int i = filename.lastIndexOf('.');
if (i > 0 && i < filename.length() - 1) {
return filename.substring(i + 1).toLowerCase();
}
}
return null;
}
}