01: /*******************************************************************************
02: * Copyright (c) 2000, 2003 IBM Corporation and others.
03: * All rights reserved. This program and the accompanying materials
04: * are made available under the terms of the Eclipse Public License v1.0
05: * which accompanies this distribution, and is available at
06: * http://www.eclipse.org/legal/epl-v10.html
07: *
08: * Contributors:
09: * IBM Corporation - initial API and implementation
10: *******************************************************************************/package org.eclipse.swt.events;
11:
12: import org.eclipse.swt.internal.SWTEventListener;
13:
14: /**
15: * Classes which implement this interface provide methods
16: * that deal with the events that are generated as controls
17: * gain and lose focus.
18: * <p>
19: * After creating an instance of a class that implements
20: * this interface it can be added to a control using the
21: * <code>addFocusListener</code> method and removed using
22: * the <code>removeFocusListener</code> method. When a
23: * control gains or loses focus, the appropriate method
24: * will be invoked.
25: * </p>
26: *
27: * @see FocusAdapter
28: * @see FocusEvent
29: */
30: public interface FocusListener extends SWTEventListener {
31:
32: /**
33: * Sent when a control gets focus.
34: *
35: * @param e an event containing information about the focus change
36: */
37: public void focusGained(FocusEvent e);
38:
39: /**
40: * Sent when a control loses focus.
41: *
42: * @param e an event containing information about the focus change
43: */
44: public void focusLost(FocusEvent e);
45: }
|