nextapp.echo.app.list.ListModel Maven / Gradle / Ivy
/*
* This file is part of the Echo Web Application Framework (hereinafter "Echo").
* Copyright (C) 2002-2009 NextApp, Inc.
*
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*/
package nextapp.echo.app.list;
import java.io.Serializable;
import nextapp.echo.app.event.ListDataListener;
/**
* A data model for list type components (SelectFields and ListBoxes).
*/
public interface ListModel
extends Serializable {
/**
* Adds a ListDataListener to the model.
* ListDataListeners are notified whenever the model
* changes.
*
* @param l the ListDataListener to add
*/
public void addListDataListener(ListDataListener l);
/**
* Returns the value at the specified index in the list.
*
* @param index the index
* @return the value
*/
public Object get(int index);
/**
* Returns the size of the list.
*
* @return the size
*/
public int size();
/**
* Removes a ListDataListener from the model.
* ListDataListener are notified whenever the model changes.
*
* @param l the ListDataListener to remove
*/
public void removeListDataListener(ListDataListener l);
}