/**
*
Java Diagram Package; An extremely flexible and fast multipurpose diagram
component for Swing.
Copyright (C) 2001 Eric Crahen <crahen@cse.buffalo.edu>
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 util;
/**
* @class ClassFilter
*
* @date 08-20-2001
* @author Eric Crahen
* @version 1.0
*
* Filter class for a FilteredIterator. This will filter out objects
* that are not assignable to a particular class.
*/
public class ClassFilter implements Comparable {
private Class filterClass;
/**
* Create a new ClassFilter
*
* @param Class
*/
public ClassFilter(Class c) {
filterClass = c;
}
/**
* Compare an item to this filter.
*
* @param Object
* @return int
*/
public int compareTo(Object o) {
if(o == null)
return -1;
return (filterClass.isAssignableFrom(o.getClass())) ? 0 : 1;
}
}