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/*******************************************************************************
* Copyright (c) 2000, 2005 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 as controls
* gain and lose focus.
* <p>
* After creating an instance of a class that implements
* this interface it can be added to a control using the
* <code>addFocusListener</code> method and removed using
* the <code>removeFocusListener</code> method. When a
* control gains or loses focus, the appropriate method
* will be invoked.
* </p>
*
* @see FocusAdapter
* @see FocusEvent
*/
public interface FocusListener extends SWTEventListener {
/**
* Sent when a control gets focus.
*
* @param e an event containing information about the focus change
*/
public void focusGained(FocusEvent e);
/**
* Sent when a control loses focus.
*
* @param e an event containing information about the focus change
*/
public void focusLost(FocusEvent e);
}
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