/* * 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.echo2.app.button; import nextapp.echo2.app.event.ChangeListener; /** * Model for two-state toggle button components. */ public interface ToggleButtonModel extends ButtonModel { /** * Adds a <code>ChangeListener</code> to receive notification of state * changes, i.e., to the selected state of a <code>ToggleButton</code>. * * @param l the listener to add */ public void addChangeListener(ChangeListener l); /** * Returns the selection state. * * @return the selection state */ public boolean isSelected(); /** * Removes a <code>ChangeListener</code> from being notified of state * changes, i.e., to the selected state of a <code>ToggleButton</code>. * * @param l the listener to remove */ public void removeChangeListener(ChangeListener l); /** * Sets the selection state. * * @param newValue the new selection state */ public void setSelected(boolean newValue); }