/*
Wotonomy: OpenStep design patterns for pure Java applications.
Copyright (C) 2001 Intersect Software Corporation

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, see http://www.gnu.org
*/

package net.wotonomy.control;

/**
* A simple extension of EODataSource that 
* allows for indexed insertion.  The wotonomy
* implementation of EODisplayGroup supports 
* this and will use it if possible.  This is
* useful for classes like the PropertyDataSource,
* where the ordering of items in an indexed 
* property may be important.
*
* @author michael@mpowers.net
* @author $Author: cgruber $
* @version $Revision: 893 $
*/
public abstract class OrderedDataSource extends EODataSource
{
    /**
    * Inserts the specified object into this data source,
    * at the specified index.
    */
    public abstract void insertObjectAtIndex ( 
        Object anObject, int anIndex );
}

/*
 * $Log$
 * Revision 1.1  2006/02/16 13:19:57  cgruber
 * Check in all sources in eclipse-friendly maven-enabled packages.
 *
 * Revision 1.2  2003/08/06 23:07:52  chochos
 * general code cleanup (mostly, removing unused imports)
 *
 * Revision 1.1  2001/01/24 14:10:53  mpowers
 * Contributing OrderedDataSource, and PropertyDataSource extends it.
 *
 *
 */