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ListModel.java
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1998-06-30
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/*
* @(#)ListModel.java 1.7 98/01/30
*
* Copyright (c) 1997 Sun Microsystems, Inc. All Rights Reserved.
*
* This software is the confidential and proprietary information of Sun
* Microsystems, Inc. ("Confidential Information"). You shall not
* disclose such Confidential Information and shall use it only in
* accordance with the terms of the license agreement you entered into
* with Sun.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
* SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
* SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
* THIS SOFTWARE OR ITS DERIVATIVES.
*
*/
package com.sun.java.swing;
/**
* This interface defines the methods components like JList use
* to get the value of each cell in a list and the length of the list.
* Logically the model is a vector, indices vary from 0 to
* ListDataModel.getSize() - 1. Any change to the contents or
* length of the data model must be reported to all of the
* ListDataListeners.
*
* @version 0.0 03/01/97
* @author Hans Muller
* @see JList
*/
import com.sun.java.swing.event.ListDataListener;
public interface ListModel
{
/**
* Returns the length of the list.
*/
int getSize();
/**
* Returns the value at the specified index.
*/
Object getElementAt(int index);
/**
* Add a listener to the list that's notified each time a change
* to the data model occurs.
* @param l the ListDataListener
*/
void addListDataListener(ListDataListener l);
/**
* Remove a listener from the list that's notified each time a
* change to the data model occurs.
* @param l the ListDataListener
*/
void removeListDataListener(ListDataListener l);
}