/****************************************************************************
* Copyright (C) 2012 ecsec GmbH.
* All rights reserved.
* Contact: ecsec GmbH (info@ecsec.de)
*
* This file is part of the Open eCard App.
*
* GNU General Public License Usage
* This file may be used under the terms of the GNU General Public
* License version 3.0 as published by the Free Software Foundation
* and appearing in the file LICENSE.GPL included in the packaging of
* this file. Please review the following information to ensure the
* GNU General Public License version 3.0 requirements will be met:
* http://www.gnu.org/copyleft/gpl.html.
*
* Other Usage
* Alternatively, this file may be used in accordance with the terms
* and conditions contained in a signed written agreement between
* you and ecsec GmbH.
*
***************************************************************************/
package org.openecard.gui.file;
import java.io.File;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
/**
* File filter checking any wrapped FileFilters.
* This FileFilter accepts a file if any of the filters agrees to accept the file.
*
* @author Tobias Wich <tobias.wich@ecsec.de>
*/
public class CombiningOrFilter implements FileFilter {
private final List<? extends FileFilter> filters;
private final String description;
/**
* Creates a new CombiningFilter.
* In case no filter is given, the {@link AcceptAllFilesFilter} is used as the only choice.
*
* @param filters Filters to be combined.
*/
public CombiningOrFilter(FileFilter... filters) {
this(Arrays.asList(filters));
}
/**
* Creates a new CombiningFilter.
* In case no filter is given, the {@link AcceptAllFilesFilter} is used as the only choice.
*
* @param filters Filters to be combined.
*/
public CombiningOrFilter(List<FileFilter> filters) {
if (filters.isEmpty()) {
this.filters = Arrays.asList(new AcceptAllFilesFilter());
} else {
this.filters = filters;
}
StringBuilder sb = new StringBuilder(32);
Iterator<? extends FileFilter> it = this.filters.iterator();
while (it.hasNext()) {
sb.append(it.next().getDescription());
if (it.hasNext()) {
sb.append("; ");
}
}
description = sb.toString();
}
@Override
public boolean accept(File f) {
for (FileFilter next : filters) {
if (next.accept(f)) {
return true;
}
}
return false;
}
@Override
public String getDescription() {
return description;
}
}