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Java > Open Source Codes > org > eclipse > swt > events > VerifyListener


1 /*******************************************************************************
2  * Copyright (c) 2000, 2005 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11 package org.eclipse.swt.events;
12
13
14 import org.eclipse.swt.internal.SWTEventListener;
15
16 /**
17  * Classes which implement this interface provide a method
18  * that deals with the events that are generated when text
19  * is about to be modified.
20  * <p>
21  * After creating an instance of a class that implements
22  * this interface it can be added to a text control using the
23  * <code>addVerifyListener</code> method and removed using
24  * the <code>removeVerifyListener</code> method. When the
25  * text is about to be modified, the verifyText method
26  * will be invoked.
27  * </p>
28  *
29  * @see VerifyEvent
30  */
31 public interface VerifyListener extends SWTEventListener {
32
33 /**
34  * Sent when the text is about to be modified.
35  * <p>
36  * A verify event occurs after the user has done something
37  * to modify the text (typically typed a key), but before
38  * the text is modified. The doit field in the verify event
39  * indicates whether or not to modify the text.
40  * </p>
41  *
42  * @param e an event containing information about the verify
43  */
44 public void verifyText(VerifyEvent e);
45 }
46
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