SelectionListener.java

/*******************************************************************************
 * Copyright (c) 2000, 2005, 2012 IBM Corporation, Gerhardt Informatics Kft. 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
 *     Gerhardt Informatics Kft. - GEFGWT port
 *******************************************************************************/
package org.eclipse.swt.events;

/**
 * Classes which implement this interface provide methods that deal with the
 * events that are generated when selection occurs in a control.
 * <p>
 * After creating an instance of a class that implements this interface it can
 * be added to a control using the <code>addSelectionListener</code> method and
 * removed using the <code>removeSelectionListener</code> method. When selection
 * occurs in a control the appropriate method will be invoked.
 * </p>
 * 
 * @see SelectionAdapter
 * @see SelectionEvent
 */
public interface SelectionListener extends SWTEventListener {

	/**
	 * Sent when selection occurs in the control.
	 * <p>
	 * For example, selection occurs in a List when the user selects an item or
	 * items with the keyboard or mouse. On some platforms, the event occurs
	 * when a mouse button or key is pressed. On others, it happens when the
	 * mouse or key is released. The exact key or mouse gesture that causes this
	 * event is platform specific.
	 * </p>
	 * 
	 * @param e
	 *            an event containing information about the selection
	 */
	public void widgetSelected(SelectionEvent e);

	/**
	 * Sent when default selection occurs in the control.
	 * <p>
	 * For example, on some platforms default selection occurs in a List when
	 * the user double-clicks an item or types return in a Text. On some
	 * platforms, the event occurs when a mouse button or key is pressed. On
	 * others, it happens when the mouse or key is released. The exact key or
	 * mouse gesture that causes this event is platform specific.
	 * </p>
	 * 
	 * @param e
	 *            an event containing information about the default selection
	 */
	public void widgetDefaultSelected(SelectionEvent e);
}