/* * Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 David Berkman * * This file is part of the SmallMind Code Project. * * The SmallMind Code Project is free software, you can redistribute * it and/or modify it under either, at your discretion... * * 1) The terms of GNU Affero General Public License as published by the * Free Software Foundation, either version 3 of the License, or (at * your option) any later version. * * ...or... * * 2) The terms of the Apache License, Version 2.0. * * The SmallMind Code Project 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 * General Public License or Apache License for more details. * * You should have received a copy of the GNU Affero General Public License * and the Apache License along with the SmallMind Code Project. If not, see * <http://www.gnu.org/licenses/> or <http://www.apache.org/licenses/LICENSE-2.0>. * * Additional permission under the GNU Affero GPL version 3 section 7 * ------------------------------------------------------------------ * If you modify this Program, or any covered work, by linking or * combining it with other code, such other code is not for that reason * alone subject to any of the requirements of the GNU Affero GPL * version 3. */ package org.smallmind.swing.button; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.AbstractButton; import javax.swing.ButtonGroup; import org.smallmind.nutsnbolts.util.WeakEventListenerList; public class EventCoalescingButtonGroup extends ButtonGroup implements ActionListener { private WeakEventListenerList<ActionListener> listenerList = new WeakEventListenerList<ActionListener>(); @Override public void add (AbstractButton button) { button.addActionListener(this); super.add(button); } @Override public void remove (AbstractButton button) { button.removeActionListener(this); super.remove(button); } @Override public void actionPerformed (ActionEvent actionEvent) { GroupedActionEvent groupedActionEvent = new GroupedActionEvent(this, actionEvent); for (ActionListener actionListener : listenerList) { actionListener.actionPerformed(groupedActionEvent); } } public void addActionListener (ActionListener actionListener) { listenerList.addListener(actionListener); } public void removeActionListener (ActionListener actionListener) { listenerList.removeListener(actionListener); } }