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/*******************************************************************************
 * Copyright (c) 2000, 2017 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 ExpandListener interface.
 * 

* Classes that wish to deal with ExpandEvents can * extend this class and override only the methods which they are * interested in. *

*

* An alternative to this class are the static helper methods * {@link ExpandListener#itemCollapsedAdapter(java.util.function.Consumer)} * and * {@link ExpandListener#itemExpandedAdapter(java.util.function.Consumer)}, * which accept a lambda expression or a method reference that implements the event consumer. *

* * @see ExpandListener * @see ExpandEvent * @see Sample code and further information * * @since 3.2 */ public abstract class ExpandAdapter implements ExpandListener { /** * Sent when an item is collapsed. * The default behavior is to do nothing. * * @param e an event containing information about the operation */ @Override public void itemCollapsed(ExpandEvent e) { } /** * Sent when an item is expanded. * The default behavior is to do nothing. * * @param e an event containing information about the operation */ @Override public void itemExpanded(ExpandEvent e) { } }




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