/*******************************************************************************
* Copyright (c) 2000, 2006 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
******************************************************************************/
package org.eclipse.swt.events;
import org.eclipse.swt.internal.SWTEventListener;
/**
* Classes which implement this interface provide methods that deal with the
* expanding and collapsing of <code>ExpandItem</code>s.
* <p>
* After creating an instance of a class that implements this interface it can
* be added to a <code>ExpandBar</code> control using the
* <code>addExpandListener</code> method and removed using the
* <code>removeExpandListener</code> method. When a item of the
* <code>ExpandBar</code> is expanded or collapsed, the appropriate method
* will be invoked.
* </p>
*
* @see ExpandAdapter
* @see ExpandEvent
* @since 1.2
*/
public interface ExpandListener extends SWTEventListener {
/**
* Sent when an item is collapsed.
*
* @param e an event containing information about the operation
*/
public void itemCollapsed( ExpandEvent e );
/**
* Sent when an item is expanded.
*
* @param e an event containing information about the operation
*/
public void itemExpanded( ExpandEvent e );
}