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• 4.3
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• SelectionListener.java

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org.eclipse.swt.events.SelectionListener Maven / Gradle / Ivy

/*******************************************************************************
 * Copyright (c) 2000, 2011 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 events that are generated when selection
 * occurs in a control.
 * 

 * After creating an instance of a class that implements
 * this interface it can be added to a control using the
 * addSelectionListener method and removed using
 * the removeSelectionListener method. When
 * selection occurs in a control the appropriate method
 * will be invoked.
 * 
 *
 * @see SelectionAdapter
 * @see SelectionEvent
 */
public interface SelectionListener extends SWTEventListener {

/**
 * Sent when selection occurs in the control.
 * 

 * 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.
 * 
 *
 * @param e an event containing information about the selection
 */
public void widgetSelected(SelectionEvent e);

/**
 * Sent when default selection occurs in the control.
 * 

 * 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.
 * 
 *
 * @param e an event containing information about the default selection
 */
public void widgetDefaultSelected(SelectionEvent e);
}