/* interface ListModel
*
* Copyright (C) 2001 R M Pitman
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package charvax.swing;
import charvax.swing.event.ListDataListener;
/**
* This interface defines the methods by which components such as JList
* get the value of each cell in a list, and the length of the list.<p>
* Conceptually, the model is a Vector; indices vary from 0 to
* <code>getSize() - 1</code>.
*/
public interface ListModel
{
/** Register an object that will be notified when the list contents
* change.
*/
public void addListDataListener(ListDataListener l);
/** Returns the value at the specified index.
*/
public Object getElementAt(int index);
/** Returns the length of the list.
*/
public int getSize();
/** Remove the specified ListDataListener.
*/
public void removeListDataListener(ListDataListener l);
}