Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2016 IBM Corporation and others. * * This program and the accompanying materials * are made available under the terms of the Eclipse Public License 2.0 * which accompanies this distribution, and is available at * https://www.eclipse.org/legal/epl-2.0/ * * SPDX-License-Identifier: EPL-2.0 * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.swt.events; /** * This adapter class provides default implementations for the * methods described by the <code>SelectionListener</code> interface. * <p> * Classes that wish to deal with <code>SelectionEvent</code>s can * extend this class and override only the methods which they are * interested in. * </p> * <p> * An alternative to this class are the static helper methods * {@link SelectionListener#widgetSelectedAdapter(java.util.function.Consumer)} * and * {@link SelectionListener#widgetDefaultSelectedAdapter(java.util.function.Consumer)}, * which accept a lambda expression or a method reference that implements the event consumer. * </p> * * @see SelectionListener * @see SelectionEvent * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> */ public abstract class SelectionAdapter implements SelectionListener { /** * Sent when selection occurs in the control. * The default behavior is to do nothing. * * @param e an event containing information about the selection */ @Override public void widgetSelected(SelectionEvent e) { } /** * Sent when default selection occurs in the control. * The default behavior is to do nothing. * * @param e an event containing information about the default selection */ @Override public void widgetDefaultSelected(SelectionEvent e) { } }