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1   /*
2   Wotonomy: OpenStep design patterns for pure Java applications.
3   Copyright (C) 2001 Intersect Software Corporation
4   
5   This library is free software; you can redistribute it and/or
6   modify it under the terms of the GNU Lesser General Public
7   License as published by the Free Software Foundation; either
8   version 2.1 of the License, or (at your option) any later version.
9   
10  This library is distributed in the hope that it will be useful,
11  but WITHOUT ANY WARRANTY; without even the implied warranty of
12  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  Lesser General Public License for more details.
14  
15  You should have received a copy of the GNU Lesser General Public
16  License along with this library; if not, see http://www.gnu.org
17  */
18  
19  package net.wotonomy.control;
20  
21  /***
22  * A simple extension of EODataSource that 
23  * allows for indexed insertion.  The wotonomy
24  * implementation of EODisplayGroup supports 
25  * this and will use it if possible.  This is
26  * useful for classes like the PropertyDataSource,
27  * where the ordering of items in an indexed 
28  * property may be important.
29  *
30  * @author michael@mpowers.net
31  * @author $Author: cgruber $
32  * @version $Revision: 893 $
33  */
34  public abstract class OrderedDataSource extends EODataSource
35  {
36      /***
37      * Inserts the specified object into this data source,
38      * at the specified index.
39      */
40      public abstract void insertObjectAtIndex ( 
41          Object anObject, int anIndex );
42  }
43  
44  /*
45   * $Log$
46   * Revision 1.1  2006/02/16 13:19:57  cgruber
47   * Check in all sources in eclipse-friendly maven-enabled packages.
48   *
49   * Revision 1.2  2003/08/06 23:07:52  chochos
50   * general code cleanup (mostly, removing unused imports)
51   *
52   * Revision 1.1  2001/01/24 14:10:53  mpowers
53   * Contributing OrderedDataSource, and PropertyDataSource extends it.
54   *
55   *
56   */
57